JB/T 3663.3-1999 This standard is a revision of JB 4117-85 "Horizontal Lathe Accuracy". During the revision, only editorial changes were made, and the technical content was not changed. This standard is part of the JB/T 3663 "Heavy Horizontal Lathe" series of standards, which includes the following three parts: JB/T 3663.1-1996 Technical conditions for heavy horizontal lathes JB/T 3663.2-1998 Parameters of heavy horizontal lathes JB/T 3663.3-1999 Accuracy inspection of heavy horizontal lathes This standard specifies the requirements and inspection methods for presetting, geometric accuracy and working accuracy of heavy horizontal lathes. This standard is applicable to general-purpose ordinary precision heavy horizontal lathes with a maximum rotary diameter of 1000~5000mm on the bed and a maximum workpiece weight between centers ≥10t. This standard was first issued in December 1985. JB/T 3663.3-1999 Heavy Horizontal Lathe Accuracy Test JB/T3663.3-1999 Standard Download Decompression Password: www.bzxz.net

ICS25.080.10
Machinery Industry Standard of the People's Republic of China
JB/T3663.3-1999
Heavy Horizontal Lathe
Published on 1999-05-20
Precision Inspection
Implementation on 2000-01-01
State Bureau of Machinery Industry
JB/T3663.3—1999
This standard is a revision of JB4117-85 "Horizontal Lathe Technical Content". The content has not changed.
Precision" was revised. During the revision, only editorial changes were made according to relevant regulations. This technical standard is part of the JB/T3663
"Heavy Horizontal Lathe" series of standards, which includes the following three parts: JB/T3663.1—1996
Heavy Horizontal Lathe
Technical Conditions
Heavy Horizontal Lathe
JB/T3663.2—1996
JB/T 3663.3—1999
Heavy Horizontal Lathe
This standard replaces JB4117—85 from the date of implementation. Parameters
Precision Inspection
This standard was proposed by the National Technical Committee for Metal Cutting Machine Tools Standardization. This standard is under the jurisdiction of the Heavy Machine Tool Branch of the National Technical Committee for Metal Cutting Machine Tools Standardization. The responsible drafting unit of this standard: Qiqihar No. 1 Machine Tool Factory. The drafting units of this standard include: Wuhan Heavy Machine Tool Factory, Qinghai Heavy Machine Tool Factory, and Shanghai Heavy Machine Tool Factory. This standard was first issued in December 1985. 1
1 Scope
Standards of the Machinery Industry of the People's Republic of China
Precision Inspection of Heavy Horizontal Lathes
JB/T3663.3—1999
Replaces JB4117-85
This standard specifies the requirements and inspection methods for presetting, geometric accuracy and working accuracy of heavy horizontal lathes. The standard is applicable to general-purpose ordinary precision heavy horizontal lathes with a maximum rotary diameter of 1000-5000mm on the bed and a maximum workpiece weight between the centers greater than or equal to 10t.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1182-1996
General rules, definitions, symbols and drawing representations for shape and position tolerances GB/T17421.1-1998 General rules for machine tool inspection Part 1: Geometric accuracy of machine tools under no-load or finishing conditions 3 General requirements
3.1 Refer to 3.1 in GB/T17421.11998. Adjust the installation level, place the slide in the middle of the bed guide rail, and place a spirit level at both ends of the machine tool guide rail. The readings of the spirit level in the longitudinal and transverse directions shall not exceed 0.06/1000. 3.2 The pre-adjustment inspection is only carried out during assembly and no re-inspection is performed after the load test. 3.3 During the inspection, the actual inspection order can generally be arranged according to the requirements of the assembly and disassembly inspection tools, inspection convenience, and thermal inspection items. 3.4 During the working accuracy inspection, the inspection of the test piece should be carried out after fine turning. 3.5 When the measured length is different from the length specified in this standard, the tolerance shall be converted according to the measurable length in accordance with the provisions of 2.3.1.1 of GB/T17421.1-1998. When the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. 3.6 The direction parallel to the bed rail is called the longitudinal direction, and the direction perpendicular to the bed rail is called the transverse direction. Approved by the State Bureau of Machinery Industry on May 20, 1999 and implemented on January 1, 2000
4 Pre-adjustment inspection
1) D represents the maximum workpiece length. (The same below) 2) D represents the maximum rotation diameter of the bed. (The same below) Inspection items
Bed guide
Rail in vertical
plane
Straightness
Bed guide
Rail in vertical
plane
Parallelism
Allowance
≤5000
>5000~8000
>8000-12000
>12000-16000
>16000-20000
Only convex
Local tolerance:||tt| |On any 500 measuring length, it is
≤1600
0.040/1000
0.060/1000
Inspection tools
Level
Optical instruments
Other instruments
Special inspection tools
Level
Inspection methods
Refer to the relevant provisions of GB/T17421.1-1998 5.2.1.2.2.1
Put a bridge plate on the bed parallel to the direction of the bed rail, and put a level on the longitudinal direction of the bridge plate. Move the bridge plate, record the reading every 500mm, and inspect on the full length of the rail. Draw the rail error curve. The error is calculated as the maximum algebraic difference between the coordinate values ​​of the line connecting the two end points of the curve: the local error is calculated as the maximum algebraic difference between the coordinate values ​​of the line connecting the two end points of the curve on any local measurement length.
Each guide rail needs to be inspected
5.4.1.2.7
Put a special inspection fixture on the bed, and place a level gauge on the horizontal edge of the inspection fixture. Move the inspection fixture at equal distances (about 500mm) and inspect the entire length of the guide rail. The error is calculated as the maximum algebraic difference in the reading of the level gauge JB/T3663.3-
Inspection items
Straightness of the bed guide rail in the horizontal
plane (bisection
from the bed, only
inspect the tool holder bed
guide rail)
|The parallelism of the tool holder guide rail to the workpiece bed guide rail (only suitable for machines for separating the bed) ≤5000
>5000-8000
>8000~12000
≤1600
>12000-16000| |tt||>16000~20000
Local tolerance:
On any 500 measuring length, it is
≤5000
>5000~8000
Local tolerance:
On any 500 measuring length, it is:
Inspection tools
Special inspection fixture
Microscope
Optical instrument
Special inspection fixture
Indicator
Inspection method
Refer to the relevant provisions 5.21.23 of GB/T17421.1-1998
Tighten a steel wire at both ends of the bed along the guide rail direction, put a special inspection fixture on the guide rail, and fix the microscope on the inspection fixture. Adjust the steel wire so that the microscope readings are equal at both ends of the steel wire. Move the inspection fixture every 50 0mm, record a reading, and inspect on the entire length of the guide rail. The error is calculated as the maximum algebraic difference of the microscope readings, and the local error is calculated as the maximum algebraic difference of the readings at two points on any local measuring length.
5.4.1.2.1
Place a special inspection fixture on the tool holder bed, fix the indicator on the inspection fixture, so that its probe touches the A and B guide surfaces of the workpiece bed, move the inspection fixture, record a reading every 500mm, and inspect on the entire stroke. A and B errors are calculated separately. The error is calculated as the maximum difference of the indicator readings: the local error is calculated as the maximum difference of the indicator readings at two points on any local measuring length.
JB/T3663.3-
5 Geometric accuracy inspection
Inspection items
The slide moves
in the vertical
plane
straight Linearity
Slide movement
Parallelism in the vertical
plane
≤5000
>5000-8000
>8000-12000
>12000-16000
>16000-20000Www.bzxZ.net
Only convex
Local tolerance ：
On any 500 measuring length,
≤1600
0.040/1000
0.060/1000
Inspection tool
Level
Level
Inspection method
Refer to the relevant provisions 5.2.1.2.2 of GB/T17421.1-1998.1
Put a level on the slide near the front rail in the longitudinal direction. Move the slide, record the reading every 500mm, check and draw the guide rail error curve in the full stroke
The error is calculated by the maximum algebraic difference between the coordinate values ​​of the curve and the line connecting the two end points: the local error is calculated by the maximum algebraic difference between the coordinate values ​​of two points on any local measurement length and the line connecting the two end points of the curve
(You can also put the level on the guide rail for inspection)5.4.1.2.7
Put a level on the slide horizontally. Move the slide at equal distances (about 500mm) and check in the full stroke. The error is measured by the maximum algebraic difference of the level reading (the level can also be placed on a special inspection fixture and moved on the guide rail for inspection) JB/T3663.3- Inspection Items Slide movement in the horizontal plane Straightness of tailstock movement relative to slide movement: Straight plane In the plane ≤1600 ≤5000 >5000~8000 >8000~12000 >12000~16000 >16000~ 20000
Local tolerance:
On any 500 measuring length
≤1600>1600
≤5000
>5000~8000
Local tolerance:
a and b on any 500 measuring length
Inspection tools
Microscope
Optical instruments
Indicator
Inspection method
Refer to the relevant provisions of GB/T17421.1-1998 5.2.1.2.3
At the center height of the machine tool, tighten a steel wire along the guide rail direction, fix the microscope on the slide and adjust the steel wire so that the microscope readings are equal at both ends of the steel wire. Move the slide, record the readings every 500mm, and inspect over the full stroke.
The error is measured as the maximum algebraic difference of the microscope readings, and the local error is measured as the maximum algebraic difference of the readings at two points on any local measuring length.
5.4.2.2.5
The tailstock sleeve is retracted and locked.
Fix the indicator on the slide so that its probe touches the surface of the tailstock sleeve near the end face of the tailstock body: a. In the vertical plane: b. In the horizontal plane. Move the slide (moving the tailstock together) to test over the full stroke.
A and b errors are calculated separately. The error is measured by the maximum difference of the indicator readings: the local error is measured by the maximum difference of the indicator readings at two points on any local measuring length
JB/T3663.3-
Inspection items
Axial runout of the spindle
Tailstock center
Axis taper hole axis
Radial
Runout:
a Close to
Axis end face
Axis end face
500mm
(Applicable only to
Lathes with rotatable tailstock axis)
≤1600
>1600~3150
≤1600
>1600~3150
Inspection tool
Indicator
Inspection rod
Inspection method
Refer to the relevant provisions of GB/T17421.1-1998 5.6.2.1.2;5.6.2.2.2
Insert an inspection rod into the spindle taper hole. Fix the steel ball indicator so that its probe touches the surface of the steel ball in the center hole of the inspection rod. Rotate the spindle for inspection.
The error is measured by the maximum difference of the indicator readings. Indicator
Test rod
5.6.1.2.3
Insert a test rod into the taper hole of the tailstock spindle, and fix the indicator so that its probe touches the surface of the test rod: a. Close to the spindle end face: b. 500mm from the spindle end face. Rotate the spindle for inspection. Pull out the test rod, rotate it 90°, reinsert it, and inspect three times in sequence. Calculate the a and b errors separately. The error is measured by the average of the four measurement results.
Need to be inspected in both vertical and horizontal planesJB/T3663.3-
Inspection items
Spindle taper
Axis
≤1600
Radial runout
>1600-3150
Spindle end face
Axis end face
500mm
Parallelism of slide movement to spindle
axis line:
In vertical plane
bIn horizontal plane |tt||In the plane
≤1600
>1600-3150
Measurement length within 500
a Only upward deviation is allowed
b. Only forward deviation is allowed
Inspection tool
Indicator
Inspection rod
Indicator
Inspection rod
Inspection method
Refer to the relevant provisions of GB/T17421.1-1998 5.6.1.2.3
Insert a test rod into the spindle taper hole. Fix the indicator so that its probe touches the surface of the test rod: a Close to the spindle end face: b. 500mm away from the spindle end face. Rotate the spindle for inspection. Pull out the test rod, rotate it 90°, reinsert it, and inspect it three times in sequence.
Calculate the errors of a and b respectively. The error is calculated as the average of four measurement results.
Inspection is required in both the vertical and horizontal planes 5.4.2.2.3
Fix the indicator on the slide so that its probe touches the surface of the inspection rod: a. In the vertical plane: b. In the horizontal plane. Move the slide to inspect. Rotate the spindle 180° and inspect again in sequence.
A and b errors are calculated separately. The error is calculated as half of the algebraic sum of the two measurement results.
JB/T3663.3-
Inspection items
Top
Radial runout
Slide movement
Parallel to tailstock
Sleeve axis
Vertical plane
Horizontal plane
Allowance
≤1600
>1600~3150
≤1600||t t||On the 100 measuring length
On the 300 measuring length
On the 300 measuring length
a. Only upward deviation is allowed
b. Only forward deviation is allowed
Inspection tool
Indicator
Indicator
Inspection method
Refer to the relevant provisions of GB/T17421.1-1998 5.6.1.2.2;5.6.2.1.2
Insert a center in the spindle taper hole. Fix the indicator so that its probe touches the center taper vertically and rotates the spindle for inspection.
The error is calculated by dividing the maximum difference of the indicator reading by cosα (α is the cone half angle)
The tailstock is placed at a distance of about twice the length of the slide from the spindle and locked. The tailstock sleeve extension is half of the maximum extension length and locked.
Fix the indicator on the slide so that the probe touches the surface of the tailstock sleeve: a. In the vertical plane: b. In the horizontal plane. Move the slide for inspection.
ab errors are calculated separately. The error is calculated as the maximum difference in the indicator readings
JB/T3663.3-
Inspection items
Parallelism of slide movement to tailstock
spindle axis
a In the vertical plane, the spindle and the tailstock top are at equal heights. ≤1600. On the 500 measuring length, >1600~3150. a. Only upward deviation is allowed. b. Only forward deviation is allowed. ≤1600. >1600~3150. Only tailstock height is allowed. Inspection tools, indicator, inspection rod, indicator, inspection rod, inspection method, refer to the relevant provisions 5.4.2.2 of GB/T17421.1-1998.3
The position of the tailstock is the same as G10. The tailstock sleeve is retracted and locked.
Insert a test rod into the taper hole of the tailstock spindle. Fix the indicator on the slide so that the probe touches the surface of the test rod: a. in the vertical plane; b. in the horizontal plane. Move the slide to inspect. The spindle rotates 180P (or pull out the test rod, rotate 180° and reinsert it) and inspect again in turn.
The errors of a and b are calculated separately. The error is calculated as half of the algebraic sum of the two measurement results
5.4.3.2.1
The position of the tailstock and tailstock sleeve is the same as G1l.
Insert a test rod of equal diameter into the taper hole of the spindle and tailstock spindle. Fix the indicator on the slide so that the probe touches the surface of the test rod in the vertical plane, and move the slide to inspect. The error is measured by the difference between the indicator readings at the spindle and the tailstock. JB/T3663.3- Inspection Items Parallelism of the longitudinal slide plate to the axis of the spindle Perpendicularity of the transverse slide plate to the axis of the spindle Tolerance ≤1600 on a measuring length of 300 >1600~ 3150
0.020/300
0.030/500
0.060/1000
Only allow the deviation to the spindle box
Inspection tool
Indicator
Inspection rod
Indicator
Special ruler
Inspection method
Refer to the relevant provisions of GB/T17421.1-1998 5.4.2.2.3
Insert a test rod into the spindle taper hole. Fix the indicator on the longitudinal slide so that its probe touches the surface of the test rod in the horizontal plane. Adjust the longitudinal slide so that the indicator readings at both ends of the test rod are equal. Then touch the indicator probe to the test rod in the vertical plane and move the longitudinal slide for inspection. Rotate the spindle 180° and inspect again in sequence.
The error is calculated as half of the algebraic sum of the two measurement results. 5.5.2.2.3
a. Insert the inspection rod with a straightedge into the taper hole of the spindle. Fix the indicator on the cross slide so that its probe touches the straightedge. Move the cross slide for inspection. Rotate the spindle 180° and inspect again in sequence.
The error is calculated as half of the algebraic sum of the two measurement results. b. Place a straightedge at the same height as the spindle axis, and fix the indicator on the faceplate so that its probe touches the inspection surface of the straightedge. Rotate the spindle and adjust the straightedge until the indicator readings are equal at both ends of the straightedge.
Fix the indicator on the cross slide so that its probe touches the inspection surface of the straightedge. Move the cross slide for inspection. The error is calculated as the maximum difference between the indicator readings. JB/T3663.3-
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