Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T2329—1996
Machine vise
Published on April 22, 1996
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1996
JB/T2329—1996
This standard is a non-equivalent revision of the Japanese national standard JIS B6162-1986 "Machine vise" (1986 edition) to GB434484 "Parameters of flat jaw vises for machine tools", GB434584 "Precision of flat jaw vises for machine tools", JBn232985 "Technical conditions for manufacturing and acceptance of flat jaw vises for machine tools" and ZBJ52017—90 "Flat jaw vises for angle clamping machines". This standard has the following major differences from JIS B6162-1986 in terms of technical content: 3.1 Type adds two types, Type II and Type IIII; 3.3 Grade adds the grade "Grade 2". 3.4 Basic parameters are basically different;
-4.5 Accuracy adds the "Grade 2" accuracy tolerance. This standard has the following major changes from the above-mentioned Chinese standards: The change of the standard name makes it standardized, which is conducive to international circulation and exchange; Type II (incorporated from ZBJ52017-90) is added, renamed "fixed type" and "rotating type"; "Grade 0" is added, and the corresponding "Grade 0" accuracy tolerance is specified to adapt to technological progress and the needs of domestic and foreign markets;
- The clamping force test is changed to reach the specified clamping force without exceeding the specified torque; the content of manufacturing quality is simplified. This standard shall be implemented from July 1, 1996, and replace GB4344-434584, JBn232985, ZBJ52017-90. This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of Yantai Machine Tool Accessories Research Institute. The responsible drafting unit of this standard is Nanjing Machine Tool Accessories Factory. The participating drafting units of this standard are: Shandong Laizhou Bench Vise Factory, Beijing Yanshan Machine Tool Accessories Factory, etc. This standard was first issued in November 1978 and first revised in April 1984. 1
Machinery Industry Standard of the People's Republic of China
Machine vise
JB/T2329-1996
This standard specifies the classification and naming, requirements, test methods, inspection rules and marking, packaging, storage and transportation of machine vises (hereinafter referred to as vises).
This standard applies to vises installed on milling machines, shapers and other machine tools. 2
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 23091
GB 69988
GB 1348-88
GB9439-88
GB/T220691
JB2670—82
JB/T232694
JB/T320791
3 Classification and naming
3.1 Type
Method for testing Rockwell hardness of metal
Technical conditions for high-quality carbon structural steel
Ductile iron castings
Grey iron castings
Locate keys
General rules for precision inspection of metal cutting machine tools
Machine tool accessories
Machine tool accessories
Model compilation method
General technical conditions for packaging
See Table 1 and Figures 1 to 3 for the types of vises.
Type I
Type II
Type III
Approved by the Ministry of Machinery Industry on April 22, 1996
Fixed type (without base)
Swing type
Swing type
Fixed type (without base)
Swing type
Implemented on July 1, 1996
1 Jaw body: 2 Fixed jaw: 3 Jaw pad: 4 Movable jaw: 5- Screw: 6-Nut: 7-Base: 8-Locking key Figure 1 Type I
1 Jaw body: 2 Fixed jaw: 3-Jaw pad: 4 Movable jaw: 5 Screw: 6 Nut: 7-Base: 8-Locking key Figure 2 Type I
JB/T2329-1996
1 Jaw body: 2 Fixed jaw; 3 Jaw pad: 4 Movable jaw: 5 Screw: 6 Nut: 7-Base: 8-Locking key Figure 3 Type IIII
1 Figure 1 Figure 3 is an example and is not a regulation of the vise structure. 2 L, L, L of Type III are the other three installation positions of the jaw pad, see Figure 3. 3.2 Model
JB/T2329-1996
The model and naming of the vise should generally comply with the provisions of JB/T2326. Grade
Vises are divided into three grades: grade 0, grade 1 and grade 2 according to their accuracy. It is recommended to follow Table 2. Table 2
Type 1
Type II
Type III
Note: The grades in brackets are not recommended. 3.4
Basic parameters
The specifications of the vise are expressed in jaw width. Basic parameters and dimensions are recommended to follow Table 3 and Figures 1 to 3. Table 3
Jaw width B
Jaw height h
(minimum)
Jaw maximum
Opening degree L
(minimum)
Locate key width A
(according to GB/T2206)
Bolt diameter d
Bolt spacing P
4 Requirements
4.1 Material
Type I
Type I
Type III
Type I
Type III
Type I
Type I
Type III
Type I
Type III
Type I
Type II
Type III
Type II (4-d)
The materials of the main parts of the vise are shown in Table 4. Other materials that are superior to those in Table 4 are allowed. 4
Parts name
Fixed jaw, movable jaw, base
Jaw pad
JB/T2329-1996
Note: The jaw body of the 0-level precision vise should be made of materials not lower than OT500-74.2 Appearance
HT200 (GB9439)
QT500-7 (GB1348)
HT200 (GB9439)
45 (GB699)
HT300 (GB9439)
4.2.1 Castings should not have cracks. The exposed machined surface should not have obvious defects such as sand holes, pores, shrinkage, slag inclusions, etc. 4.2.2 The machined surface of the parts should not have rust, scratches and other defects. 4.2.3 When the two jaw pads are fitted together, there should be no obvious misalignment between the top and side surfaces. 4.3 Working performance
The movable jaw should be able to move flexibly under the drive of the screw. 4.3.1
When the swivel vise body is combined with the base, the rotation should be flexible. 4.3.2
When a torque wrench is used to apply torque to the square head of the screw, and the clamping force specified in Table 5 is generated in the center of the jaws, there should be no abnormal phenomenon in each part. At this time, the torque should not be greater than the value specified in Table 5. Table 5
Clamping force
Type 1
Type II
With rolling bearing
Type III
4.4 Hardness
Without rolling bearing
The hardness of the working surface of the jaw pad shall not be less than 48HRC. 4.5 Accuracy
4.5.1 When the measured length is different from the standard length, the tolerance shall be converted according to the measurable length in accordance with the provisions of 2.3.1.1 of JB2670. When the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. 4.5.2 See Table 6 for accuracy inspection.
Waxmet surface
Plane on the guide rail of the clamp
Inspection items
Plane on the guide rail of the clamp
Parallelism to the bottom surface of the clamp support (only for type
[and type III)
Verticality of the clamping faces of the two jaws to the plane on the guide rail
On a measuring length of 100:
0.010 for level 0
0.015 for level 1
0.025 for level 2
0.030/100
0.050/100
0.070/100
（a≤90）
Inspection tools
Indicator
Cylindrical square
Indicator
Special stand
Inspection method
Refer to the relevant provisions of JB2670
Place the vise on the flat plate, make the indicator probe touch the upper plane of the guide rail within the maximum opening range of the jaws, and move the stand for inspection.
The error is measured by the maximum difference of the indicator readings. Use an indicator with a special stand to measure the fixed jaw clamping surface, and record the difference between the indicator reading and the cylindrical square reading. Then make the same measurement on the clamping surface of the movable jaw. The error is calculated as the maximum value of the two measurement results. JB/T2329-1996
Table 6 (continued)
Inspection items
Parallelism of the clamping surfaces of the two jaws in the
width direction
(only for type 1 and
type I)
Verticality of the clamping surface of the fixed jaw to the
positioning keyway of the jaw body (only for
I and type ⅡI)
Parallelism of the plane on the guide rail to the bottom surface of the
seat support
On a measuring length of 100:
0 level is 0.020
1 level is 0.020||t t||Grade 2 is 0.030
0.015/100
0.020/100
0.030/100
On the measuring length of 100:
Grade 0 is 0.015
Grade 1 is 0.020
Grade 2 is 0.030
Inspection tool
Indicator
Special table stand
Plate with key
Indicator
Indicator
Inspection method
Refer to the relevant provisions of B2670
Take the fixed jaw clamping surface as the reference, make the indicator probe touch the center of the height of the movable jaw clamping surface and slide along the width direction for inspection. The error is measured by the difference in the indicator readings.
Place the vise on a flat plate with a key and close to one side of the positioning key. Move the table frame at the end perpendicular to the key, slide the indicator probe along the width direction of the clamping surface of the fixed jaws, and record the reading difference. Then place the vise against the other side of the positioning key and make the same measurement.
The error is measured by the maximum value of the two measurement results. 5.4.1.22
Place the vise on a flat plate, make the indicator probe touch the upper plane of the guide rail within the maximum opening range of the jaws, and move the table frame for inspection.
After tightening at four positions where the base and the clamp body are aligned at the zero line and rotated 90° in sequence according to the scale, measure and record the reading difference. The error is calculated as the maximum value of four measurement results. JB/T2329-
Table 6 (continued)
Inspection items
Parallelism of the clamping surface of the fixed jaw to the locating keyway of the jaw body (only for vises with transverse locating keyways)
Parallelism of the flat surface on the clamping inspection block to the supporting bottom surface of the jaw body (only for type
and type I]
On a measuring length of 100:
0.015 for grade 0
0.020 for grade 1
0.0 for grade 2 30
On the measuring length of 100:
0 level is 0.020
1 level is 0.030
2 level is 0.050
Inspection tool
Plate with key
Indicator
Inspection block
Indicator
Inspection method
Refer to the relevant provisions of JB2670
Place the vise on the plate with key and close to one side of the positioning key. The indicator probe touches the clamping surface of the fixed jaws. Move the table frame along the side of the plate parallel to the key, record the reading difference, and then place the vise against the other side of the positioning key for the same measurement. Sample measurement.
The error is calculated as the maximum value of the two measurement results. 5.4.1.22
Fix the vise on the flat plate, place the test block on the flat surface of the guide rail and clamp it, then the indicator probe touches the flat surface on the test block and move the table stand for inspection. The error is calculated as the maximum difference in the indicator readings. The clamping torque applied is the torque shown in Table 5
JB/T2329-
Table 6 (Complete)
Inspection items
Parallelism of the flat surface on the clamped test block facing the bottom surface of the base support
Floating of the flat surface on the clamped test block (only for type||t t||Type I and Type III)
On a measuring length of 100:
0 level is 0.030
1 level is 0.040
2 level is 0.060
0 level is 0.025
1The size of the key plate should ensure that when the vise is placed on the plate, there is enough area around for measurement. Its accuracy: a) The straightness tolerance of the reference end face, reference side face and both sides of the key is (2+10L)m, L is the measuring length in meters: b) The verticality of the two sides of the key facing the reference end face and the parallelism of the two sides of the key facing the reference side face are both 5um on a measuring length of 300mm. Inspection tools
Inspection block
Indicator
Indicator
Inspection block
Inspection method
Refer to the relevant provisions of JB2670
Fix the vise on the flat plate, clamp the inspection block on the upper plane of the guide rail, and then touch the upper plane of the inspection block with the indicator probe. Move the table frame for inspection. Measure and record the reading difference after aligning the base and the clamp body at zero position and rotating 90° according to the scale.
The error is calculated as the maximum value of the four measurement results. Apply the clamping torque of the torque shown in Table 5. Fix the vise on the flat plate, place the test block on the upper plane of the guide rail, apply 5Nm torque for pre-tightening, set two indicators on the flat plate, make the probe touch the upper plane of the test block near the edge a and b, then clamp the test block (the applied torque value is 60% of the torque shown in Table 5) and record the difference in readings at each location. The error is calculated as the maximum value of the two measurement results. The test block is a rectangular block that has been annealed and finely ground (type I and type II: 40mm×70mm×100mm: type I: 70mm×150mm×150mm), and the verticality and parallelism tolerances of each surface are 3um. JB/T
Test method
JB/T2329—1996
5.1 Hardness test The test is carried out according to the test method specified in GB/T230. 5.2
Precision inspection shall be carried out according to the inspection method specified in Table 6. 5.3 Clamping force test The vise shall be fixed on the inspection table, and the clamping force tester shall be placed in the middle of the clamping surface of the jaws. A torque wrench shall be used to apply torque to the square head of the screw to clamp the tester. The inspection result shall comply with the provisions of 4.3.3. 6
Inspection rules
Delivery inspection
Each product shall be inspected and qualified before it can be shipped out of the factory. The factory inspection items generally include 4.2, 4.3.1, 4.3.2, 4.4, 4.5 and Chapter 7. 6.2
Type inspection
Type inspection shall be carried out in any of the following situations: a) Trial determination and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance. When conducting type inspection on products, all the provisions of this standard shall be inspected. 7 Marking, packaging, storage and transportation
7.1 Products shall be marked in a conspicuous position:
a) Manufacturer name or trademark:
b) Product model:
c) Product name:
d) Grade (Grade 2 is not marked).
Product packaging technical requirements, storage and transportation, random technical documents and box surface markings shall comply with the provisions of JB/T3207. 7.222030
Inspection tools
Indicator
Special stand
Keyed plate
Indicator
Indicator
Inspection method
Refer to the relevant provisions of B2670
Use the fixed jaw clamping surface as the reference, make the indicator probe touch the center of the height of the movable jaw clamping surface and slide along the width direction for inspection. The error is measured by the difference in indicator readings
Place the vise on the keyed plate and close to one side of the positioning key. Move the stand at the end perpendicular to the key. Slide the indicator probe along the width direction of the fixed jaw clamping surface and record the difference in readings. Then place the vise against the other side of the positioning key for the same measurement.
The error is calculated as the maximum value of the two measurement results. 5.4.1.22
Place the vise on a flat plate, make the indicator probe touch the upper plane of the guide rail within the maximum opening range of the jaws, and move the table frame for inspection.
After aligning the base and the zero line of the clamp body and tightening them at four positions where they are rotated 90° in sequence according to the scale, measure and record the reading difference. The error is calculated as the maximum value of four measurement results. JB/T2329-
Table 6 (continued)
Inspection items
Parallelism of the clamping surface of the fixed jaw to the locating keyway of the jaw body (only for vises with transverse locating keyways)
Parallelism of the flat surface on the clamping inspection block to the supporting bottom surface of the jaw body (only for type
and type I]
On a measuring length of 100:
0.015 for grade 0
0.020 for grade 1
0.0 for grade 2 30
On the measuring length of 100:
0 level is 0.020
1 level is 0.030
2 level is 0.050
Inspection tool
Plate with key
Indicator
Inspection block
Indicator
Inspection method
Refer to the relevant provisions of JB2670
Place the vise on the plate with key and close to one side of the positioning key. The indicator probe touches the clamping surface of the fixed jaws. Move the table frame along the side of the plate parallel to the key, record the reading difference, and then place the vise against the other side of the positioning key for the same measurement. Sample measurement.
The error is calculated as the maximum value of the two measurement results. 5.4.1.22
Fix the vise on the flat plate, place the test block on the flat surface of the guide rail and clamp it, then the indicator probe touches the flat surface on the test block and move the table stand for inspection. The error is calculated as the maximum difference in the indicator readings. The clamping torque applied is the torque shown in Table 5
JB/T2329-
Table 6 (Complete)
Inspection items
Parallelism of the flat surface on the clamped test block facing the bottom surface of the base support
Floating of the flat surface on the clamped test block (only for type||t t||Type I and Type III)
On a measuring length of 100:
0 level is 0.030
1 level is 0.040
2 level is 0.060
0 level is 0.025
1The size of the key plate should ensure that when the vise is placed on the plate, there is enough area around for measurement. Its accuracy: a) The straightness tolerance of the reference end face, reference side face and both sides of the key is (2+10L)m, L is the measuring length in meters: b) The verticality of the two sides of the key facing the reference end face and the parallelism of the two sides of the key facing the reference side face are both 5um on a measuring length of 300mm. Inspection tools
Inspection block
Indicator
Indicator
Inspection block
Inspection method
Refer to the relevant provisions of JB2670
Fix the vise on the flat plate, clamp the inspection block on the upper plane of the guide rail, and then touch the upper plane of the inspection block with the indicator probe. Move the table frame for inspection. Measure and record the reading difference after aligning the base and the clamp body at zero position and rotating 90° according to the scale.
The error is calculated as the maximum value of the four measurement results. Apply the clamping torque of the torque shown in Table 5. Fix the vise on the flat plate, place the test block on the upper plane of the guide rail, apply 5Nm torque for pre-tightening, set two indicators on the flat plate, make the probe touch the upper plane of the test block near the edge a and b, then clamp the test block (the applied torque value is 60% of the torque shown in Table 5) and record the difference in readings at each location. The error is calculated as the maximum value of the two measurement results. The test block is a rectangular block that has been annealed and finely ground (type I and type II: 40mm×70mm×100mm: type I: 70mm×150mm×150mm), and the verticality and parallelism tolerances of each surface are 3um. JB/T
Test method
JB/T2329—1996
5.1 Hardness test The test is carried out according to the test method specified in GB/T230. 5.2
Precision inspection shall be carried out according to the inspection method specified in Table 6. 5.3 Clamping force test The vise shall be fixed on the inspection table, and the clamping force tester shall be placed in the middle of the clamping surface of the jaws. A torque wrench shall be used to apply torque to the square head of the screw to clamp the tester. The inspection result shall comply with the provisions of 4.3.3. 6
Inspection rules
Delivery inspection
Each product shall be inspected and qualified before it can be shipped out of the factory. The factory inspection items generally include 4.2, 4.3.1, 4.3.2, 4.4, 4.5 and Chapter 7. 6.2
Type inspection
Type inspection shall be carried out in any of the following situations: a) Trial determination and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance. When conducting type inspection on products, all the provisions of this standard shall be inspected. 7 Marking, packaging, storage and transportation
7.1 Products shall be marked in a conspicuous position:
a) Manufacturer name or trademark:
b) Product model:
c) Product name:
d) Grade (Grade 2 is not marked).
Product packaging technical requirements, storage and transportation, random technical documents and box surface markings shall comply with the provisions of JB/T3207. 7.2030
Inspection tools
Indicator
Special stand
Keyed plate
Indicator
Indicator
Inspection method
Refer to the relevant provisions of B2670
Use the fixed jaw clamping surface as the reference, make the indicator probe touch the center of the height of the movable jaw clamping surface and slide along the width direction for inspection. The error is measured by the difference in indicator readings
Place the vise on the keyed plate and close to one side of the positioning key. Move the stand at the end perpendicular to the key. Slide the indicator probe along the width direction of the fixed jaw clamping surface and record the difference in readings. Then place the vise against the other side of the positioning key for the same measurement.
The error is calculated as the maximum value of the two measurement results. 5.4.1.22
Place the vise on a flat plate, make the indicator probe touch the upper plane of the guide rail within the maximum opening range of the jaws, and move the table frame for inspection.
After aligning the base and the zero line of the clamp body and tightening them at four positions where they are rotated 90° in sequence according to the scale, measure and record the reading difference. The error is calculated as the maximum value of four measurement results. JB/T2329-
Table 6 (continued)
Inspection items
Parallelism of the clamping surface of the fixed jaw to the locating keyway of the jaw body (only for vises with transverse locating keyways)
Parallelism of the flat surface on the clamping inspection block to the supporting bottom surface of the jaw body (only for type
and type I]
On a measuring length of 100:
0.015 for grade 0
0.020 for grade 1
0.0 for grade 2 30
On the measuring length of 100:
0 level is 0.020
1 level is 0.030
2 level is 0.050
Inspection tool
Plate with key
Indicator
Inspection block
Indicator
Inspection method
Refer to the relevant provisions of JB2670
Place the vise on the plate with key and close to one side of the positioning key. The indicator probe touches the clamping surface of the fixed jaws. Move the table frame along the side of the plate parallel to the key, record the reading difference, and then place the vise against the other side of the positioning key for the same measurement. Sample measurement.
The error is calculated as the maximum value of the two measurement results. 5.4.1.22
Fix the vise on the flat plate, place the test block on the flat surface of the guide rail and clamp it, then the indicator probe touches the flat surface on the test block and move the table stand for inspection. The error is calculated as the maximum difference in the indicator readings. The clamping torque applied is the torque shown in Table 5
JB/T2329-
Table 6 (Complete)
Inspection items
Parallelism of the flat surface on the clamped test block facing the bottom surface of the base support
Floating of the flat surface on the clamped test block (only for type||t t||Type I and Type III)
On a measuring length of 100:
0 level is 0.030
1 level is 0.040
2 level is 0.060
0 level is 0.025
1The size of the key plate should ensure that when the vise is placed on the plate, there is enough area around for measurement. Its accuracy: a) The straightness tolerance of the reference end face, reference side face and both sides of the key is (2+10L)m, L is the measuring length in meters: b) The verticality of the two sides of the key facing the reference end face and the parallelism of the two sides of the key facing the reference side face are both 5um on a measuring length of 300mm. Inspection tools
Inspection block
Indicator
Indicator
Inspection block
Inspection method
Refer to the relevant provisions of JB2670
Fix the vise on the flat plate, clamp the inspection block on the upper plane of the guide rail, and then touch the upper plane of the inspection block with the indicator probe. Move the table frame for inspection. Measure and record the reading difference after aligning the base and the clamp body at zero position and rotating 90° according to the scale.
The error is calculated as the maximum value of the four measurement results. Apply the clamping torque of the torque shown in Table 5. Fix the vise on the flat plate, place the test block on the upper plane of the guide rail, apply 5Nm torque for pre-tightening, set two indicators on the flat plate, make the probe touch the upper plane of the test block near the edge a and b, then clamp the test block (the applied torque value is 60% of the torque shown in Table 5) and record the difference in readings at each location. The error is calculated as the maximum value of the two measurement results. The test block is a rectangular block that has been annealed and finely ground (type I and type II: 40mm×70mm×100mm: type I: 70mm×150mm×150mm), and the verticality and parallelism tolerances of each surface are 3um. JB/T
Test method
JB/T2329—1996
5.1 Hardness test The test is carried out according to the test method specified in GB/T230. 5.2
Precision inspection shall be carried out according to the inspection method specified in Table 6. 5.3 Clamping force test The vise shall be fixed on the inspection table, and the clamping force tester shall be placed in the middle of the clamping surface of the jaws. A torque wrench shall be used to apply torque to the square head of the screw to clamp the tester. The inspection result shall comply with the provisions of 4.3.3. 6
Inspection rules
Delivery inspection
Each product shall be inspected and qualified before it can be shipped out of the factory. The factory inspection items generally include 4.2, 4.3.1, 4.3.2, 4.4, 4.5 and Chapter 7. 6.2
Type inspection
Type inspection shall be carried out in any of the following situations: a) Trial determination and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance. When conducting type inspection on products, all the provisions of this standard shall be inspected. 7 Marking, packaging, storage and transportation
7.1 Products shall be marked in a conspicuous position:
a) Manufacturer name or trademark:
b) Product model:
c) Product name:
d) Grade (Grade 2 is not marked).
Product packaging technical requirements, storage and transportation, random technical documents and box surface markings shall comply with the provisions of JB/T3207. 7.222
Fix the vise on the flat plate, place the test block on the upper plane of the guide rail and clamp it, then the indicator probe touches the upper plane of the test block and move the table stand for inspection. The error is measured by the maximum difference in the indicator readings. The clamping torque applied is the torque shown in Table 5
JB/T2329-
Table 6 (End)
Inspection items
Parallelism of the flat surface on the clamping inspection block facing the bottom surface of the base support
Float of the flat surface on the clamping inspection block (only for type I and type III)
On a measuring length of 100:
Grade 0: 0.030bzxZ.net
Grade 1: 0.040
Grade 2: 0.060
Grade 0: 0.025
1The size of the keyed plate should ensure that there is enough area around it for measurement when the vise is placed on the plate. Its accuracy: a) The straightness tolerance of the reference end face, reference side face and both sides of the key is (2+10L) m, L is the measurement length in meters: b) The verticality of the two sides of the key facing the reference end face and the parallelism of the two sides of the key facing the reference side face are both 5um over a measurement length of 300mm. Inspection tools
Inspection block
Indicator
Indicator
Inspection block
Inspection method
Refer to the relevant provisions of JB2670
Fix the vise on the flat plate, clamp the inspection block on the plane of the guide rail, and then the indicator probe touches the upper plane of the inspection block, and move the table frame for inspection. Measure and record the reading difference after tightening the base and the clamp body at zero alignment and rotating 90° in sequence according to the scale.
The error is calculated as the maximum value of the four measurement results. Apply the clamping torque of the torque shown in Table 5. Fix the vise on the flat plate, place the test block on the upper plane of the guide rail, apply 5Nm torque for pre-tightening, set two indicators on the flat plate, make the probe touch the upper plane of the test block near the edge a and b, then clamp the test block (the applied torque value is 60% of the torque shown in Table 5) and record the difference in readings at each location. The error is calculated as the maximum value of the two measurement results. The test block is a rectangular block that has been annealed and finely ground (type I and type II: 40mm×70mm×100mm: type I: 70mm×150mm×150mm), and the verticality and parallelism tolerances of each surface are 3um. JB/T
Test method
JB/T2329—1996
5.1 Hardness test The test is carried out according to the test method specified in GB/T230. 5.2
Precision inspection shall be carried out according to the inspection method specified in Table 6. 5.3 Clamping force test The vise shall be fixed on the inspection table, and the clamping force tester shall be placed in the middle of the clamping surface of the jaws. A torque wrench shall be used to apply torque to the square head of the screw to clamp the tester. The inspection result shall comply with the provisions of 4.3.3. 6
Inspection rules
Delivery inspection
Each product shall be inspected and qualified before it can be shipped out of the factory. The factory inspection items generally include 4.2, 4.3.1, 4.3.2, 4.4, 4.5 and Chapter 7. 6.2
Type inspection
Type inspection shall be carried out in any of the following situations: a) Trial determination and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance. When conducting type inspection on products, all the provisions of this standard shall be inspected. 7 Marking, packaging, storage and transportation
7.1 Products shall be marked in a conspicuous position:
a) Manufacturer name or trademark:
b) Product model:
c) Product name:
d) Grade (Grade 2 is not marked).
Product packaging technical requirements, storage and transportation, random technical documents and box surface markings shall comply with the provisions of JB/T3207. 7.222
Fix the vise on the flat plate, place the test block on the upper plane of the guide rail and clamp it, then the indicator probe touches the upper plane of the test block and move the table stand for inspection. The error is measured by the maximum difference in the indicator readings. The clamping torque applied is the torque shown in Table 5
JB/T2329-
Table 6 (End)
Inspection items
Parallelism of the flat surface on the clamping inspection block facing the bottom surface of the base support
Float of the flat surface on the clamping inspection block (only for type I and type III)
On a measuring length of 100:
Grade 0 is 0.030
Grade 1 is 0.040
Grade 2 is 0.060
Grade 0 is 0.025
1The size of the keyed plate should ensure that there is enough area around it for measurement when the vise is placed on the plate. Its accuracy: a) The straightness tolerance of the reference end face, reference side face and both sides of the key is (2+10L) m, L is the measurement length in meters: b) The verticality of the two sides of the key facing the reference end face and the parallelism of the two sides of the key facing the reference side face are both 5um over a measurement length of 300mm. Inspection tools
Inspection block
Indicator
Indicator
Inspection block
Inspection method
Refer to the relevant provisions of JB2670
Fix the vise on the flat plate, clamp the inspection block on the plane of the guide rail, and then the indicator probe touches the upper plane of the inspection block, and move the table frame for inspection. Measure and record the reading difference after tightening the base and the clamp body at zero alignment and rotating 90° in sequence according to the scale.
The error is calculated as the maximum value of the four measurement results. Apply the clamping torque of the torque shown in Table 5. Fix the vise on the flat plate, place the test block on the upper plane of the guide rail, apply 5Nm torque for pre-tightening, set two indicators on the flat plate, make the probe touch the upper plane of the test block near the edge a and b, then clamp the test block (the applied torque value is 60% of the torque shown in Table 5) and record the difference in readings at each location. The error is calculated as the maximum value of the two measurement results. The test block is a rectangular block that has been annealed and finely ground (type I and type II: 40mm×70mm×100mm: type I: 70mm×150mm×150mm), and the verticality and parallelism tolerances of each surface are 3um. JB/T
Test method
JB/T2329—1996
5.1 Hardness test The test is carried out according to the test method specified in GB/T230. 5.2
Precision inspection shall be carried out according to the inspection method specified in Table 6. 5.3 Clamping force test The vise shall be fixed on the inspection table, and the clamping force tester shall be placed in the middle of the clamping surface of the jaws. A torque wrench shall be used to apply torque to the square head of the screw to clamp the tester. The inspection result shall comply with the provisions of 4.3.3. 6
Inspection rules
Delivery inspection
Each product shall be inspected and qualified before it can be shipped out of the factory. The factory inspection items generally include 4.2, 4.3.1, 4.3.2, 4.4, 4.5 and Chapter 7. 6.2
Type inspection
Type inspection shall be carried out in any of the following situations: a) Trial determination and identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance. When conducting type inspection on products, all the provisions of this standard shall be inspected. 7 Marking, packaging, storage and transportation
7.1 Products shall be marked in a conspicuous position:
a) Manufacturer name or trademark:
b) Product model:
c) Product name:
d) Grade (Grade 2 is not marked).
Product packaging technical requirements, storage and transportation, random technical documents and box surface markings shall comply with the provisions of JB/T3207. 7.2
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