Some standard content:
ine: 681. 785. 6.C7
National Standard of the People's Republic of China
GB/T 3371
Optical dividing head
Optical dividing head
Issued on 1995-01-04
Implemented on 1995-12-01
Issued by State Technical Bureau
National Standard of the People's Republic of China
Optical dividing head
Caikul diriainghend
1 Subject content and scope of application
GB/T 3371—1595
Replaces GB3377·82
This standard specifies the product classification, technical requirements, test methods, inspection specifications, packaging, transportation and storage of optical dividing heads. This standard is applicable to the following data for measuring angle division. 2 Reference Standards
(11162 General Technical Specifications for Optical Spectrometers [I3 1785 Optical receiver font and symbol card GB2928 wet non-inspection juice number by sample doctor and punch sample table (applicable to the inspection of the upper and lower wall batches) G112829 periodic inspection number extraction detailed rental sequence and single sample loss (applicable to the production process thermal qualitative gun inspection) J5517 optical instrument heart gas protection basic vehicle safety requirements 2tN31C03 meter light street storage from the light book disk technical requirements ZBY12 instrument transportation, tease cover busy in H this environment photo bearing parts and combat test methods 21Y013.-34 instrument and meter general technical provisions 3 product classification
instrument teaching accuracy is divided into 4\.10\20 three types. 3.2 basic contention number
the basic majority of the instrument should be in accordance with the table [specified in the table!
4 technical requirements
angle measurement market
in 4.1 The appearance of the exposed parts shall meet the following 5 requirements: a. The surface of the instrument shall not have any scratches, sharp edges shall be removed, joints shall be neat, and screws shall not have any damage. b. The coating and plating layers shall be firm and shall not have any peeling, flaking or corrosion. The color of the same coating and plating layer shall be consistent. Approved by the State Administration of Technical Supervision on 199511-04, GB/T3371-1995-12-1, 1995-12-1, GB/T3371-1995, the optical system shall not be damaged, and the object shall not have any defects, such as small objects, scratches, deposits, bubbles and debonding. Optical method e. The bulk should not have obvious deviations.
4.2 The mechanical performance of the receiver should meet the following requirements. The fixed connection mechanism of the receiver should be solid and
rotatable, and the sliding and mechanical parts should be stable and flexible. b. The fixed position should be clear.
The working parts should be flexible and compatible, and there should be no looseness, movement, or looseness that you can feel. d. The moving parts should not be displaced due to their own weight and the expansion of accessories. The brake limit mechanism should be effective and can be controlled.
4. The scale and micro-words on the instrument should be clear and should comply with the provisions of B11162 and CB785. The registration form should comply with the provisions of ZBN34003.
4.4 The main technical indicators of the positioner should comply with the provisions in Table 2. 2
Only for groups Standard error between positive and negative rotation and the return to original position and the error between the indicator and the mark on the table. The parallelism of the positioning key of the workbench guide finger to the work surface. The flatness of the work table surface. The parallelism of the main axis of the dividing head and the working surface and the measuring surface. The parallelism of the axis of the dividing head and the axis of the ejector pin of the storage head to the working surface of the workbench and the parallelism of the needle center to the working surface of the workbench. The direction of movement of the ejector pin to the working surface of the workbench. When the main axis is in the position, the straightness of the work table surface begins to be read during the orientation period. 4.5 The basic safety requirements for electrical trapezoidal protection devices shall comply with the provisions of JB5517. For the study of chemical quality, on 1 length, on 100mm length, on locun length, on left m, on optical reading laser, 4.6 digital or fake device, GB/T33711995, on the phase line, neutral line and ground line of the digital display system, the symmetrical interference amplitude (100±150V, asymmetrical amplitude (10±150V) and ground line (5±75V) are superimposed separately, and the interference process is effective from large to small (micro sound) under the condition of superimposing symmetrical interference amplitude (100±150V, asymmetrical amplitude (10±150V) and ground line (5±75V). From small to large (cold sound), the display jumps less than a pulse, the system is normal, 4.7 The device can withstand the test specified in 2BY102 under the remaining packaging conditions, among which the temperature test is selected at 1055, the low temperature test is selected at -45, and the high temperature test is selected at 2Gmri. Test method
5.1 Test conditions
5.1.1 The device is tested for a certain time and the width of the room is in accordance with the standard. Table 3
Itchy change
Question 7 The weight of the leaf is relatively controlled within the flat grape
2u + 5.1.2 When the instrument is tested, the power supply voltage is 220±22V, and the load is 59+112mA. 5.1.3 For digital instruments, the test should be carried out 30 minutes after the receiver is powered on. 5.2 Appearance of the instrument (Section 4.1 of this standard) 5.3 Module function of the instrument (Section 1.2 of this standard) Special operation inspection 5.4 Instrument reduction requirements (Section 4 of this standard) .3) According to GB11162 and GB1785, the test shall be conducted. 5.5 Accuracy of the instrument (Section 1 of Table 2 of this standard) 5.5.1 Test tool
1mm: 1? plane, the limit verification error of the angle shall not exceed 3\ (for 20\ optical dividing head): 20
25 plane; the limit verification error of the angle shall not exceed 2% for 16\ optical dividing head and 0.5% for 4\ optical dividing head. Head): h. Special mandrel: the straightness of the mandrel axis and the mounting surface is not specified = 30\; c. Self-alignment instrument: 1 In the maximum measurement range, the accuracy is less than 1\ (for 10\ and 20\ optical dividing heads) 1 In the measurement range, the accuracy cannot be better than 0.5\ (for 4\ optical dividing heads) 5.5.2 Test 5.5.2 Use the special mandrel with a few hundred to fix the dividing head, so that the center of the surface coincides with the center of rotation of the dividing head, and use the self-alignment collimator to align the center of rotation of the dividing head. The surface of the L work, after burning with the method of comparison with the polyhedron machine to achieve the alignment of the selected line inspection, control the inspection in the indexing reading device to carry out several times, the reverse direction of each inspection, each time the error of each position is respectively formed into the error of the nonlinear, each error curve of the high and low points of the difference, are not more than the standard elastic gauge. 3
GB/T3371-1995
The optical dividing head of 4\, after the above-mentioned force method inspection, the polyhedron is rotated by 3 degrees? \3 and then inspected according to the above method. According to the above test, the in-situ error of the indication value is comprehensively adjusted in the horizontal and vertical directions of the measuring head in 5.6 forward and reverse measurements (Table 2 in 4.1 of this standard) 5.6.1 Test tools
Same as 3.5.1 of this standard,
5.6.2 Test method
Fix the multi-valence body on the dividing head with the help of a special mandrel, align the multi-valence body with the dividing head with the collimator, align the dividing scale (or digital display value) in the dividing head reading, and stop the dividing head 36C so that the dividing head is aligned with the dividing head. (Receive digital display value) Use the collimator to read a reading on the working surface, continue to rotate forward to a small angle, then reverse the collimator, and read a reading on the same length (or number of values), reverse the collimator 36, and run the test in the same way as described above. The maximum value of the four readings of the collimator is taken as the measured value. The above method is tested three times and the average value is taken as the test result: 5.7 The workbench guide key is accurately positioned on the upper side of the working surface (or the fixed surface 1): 1. The flatness (the original bottle shear 1., the killing clothes? Store number 3
5.7. Test work month
. Lever with a micrometer of 0.002mm; b. Special optical tool: Positioning length not more than 1Gmr.1.5.7.2 Starting method
Make the special clamp with micrometer close to the workbench surface for positioning), to make sure the micrometer is in contact with the material floor, hold the micrometer at any indicated value, then move the special tool, and take the maximum indicated value from the micrometer as the measurement index: 5.7 The multiplication of the workbench surface and the work surface (machine standard No. 4.5.8.1 Test tool
Vernier angle gauge with a graduation value of 2:
5.8.2 Test method
Test with a vernier angle gauge. The test is carried out at least 10 positions within the full length of the workbench. 5.9 Leveling of the spindle axis of the test head with the workbench surface and the surface (Sequence number in Table 8 of this standard) 5.9.1 Test path
. For a cylindrical mandrel with No. 4 gauge, the radial accuracy of the cylindrical part shall not exceed 5.5μm, and the radial accuracy of the cylindrical part shall not exceed
b. Micrometer with a diameter of 0.031mm:
e. Special clamp
5.9.2 Test method
First, align the fixed scale of the optical dividing head at the zero position, then insert the center of the measuring column with No. 1 gauge into the main and auxiliary holes of the dividing scale, and place the special clamp with the measuring gauge on the working surface of the instrument workbench, so that the dial head of the gauge is in contact with the sensing center, move the special clamp to make the micrometer measure the center of the measuring column and find the center of the measuring column, and the very slight difference between the two readings is the parallelism of the main shaft and the working surface of the workbench. Similarly, place the special measuring tool (with a positioning block) on the working surface of a workbench, and place the positioning block on the side of the workbench so that the head of the micro-grid is aligned with the centroid of the column. The above method is used to measure the parallelism between the axis line and the workbench. The connecting line of the dividing head needle and the seat needle axis is aligned with the workbench work surface and the surface of the workbench (this standard 4, 4, Table 2 (>
5.10.1 Test tool
R Special drawing Centroid axis: The radial runout should not exceed c.5m. The radial runout should not exceed 3.5um; h creation table, the same standard policy 5.9.1b
Special light
5-10.2 Test preparation and method
A/T 3371-1995www.bzxz.net
Two prefabricated special drop-centroidal axis-test method is the same as this table: Book 6.9.2: For the small main seal specification, the instrument can be used to adjust the scale of the instrument with the adjustment of the instrument. The sound can make the ground meet the requirements of the car.
5.11 Ni seat original moving force is still Liu component 1 standard time system surface allowed (this rate No. 4.4 No. 2 share number?) 5. 11. 1 or test TR
a. Micro: Net this fast accurate No. 5.U.1 6; Tools: this kill,
5. 11. 2 Test method
Place the instrument with a micrometer on the workbench, make the micrometer measuring point touch the pressure sleeve, and move the micrometer seat cover for 3m. Then start the measuring head again and observe the maximum change of the micrometer indication value. The value is the parallelism of the moving direction of the total top of the workbench working surface. Place the special tool with a micrometer (holding) on the workbench. Use the above method to determine the parallelism of the outer moving direction of the seat cover to the workbench working surface. The test is based on the locking state of the bearing. 5.12 (Section 4.4 of this standard) Serial number 875.12.1 Test tools
3. Micrometer: Section 5.9.1 of this standard h:
b. Special tool: Same as Section 5.3 of this standard. 1 c5. 12. 2 Test method
Move the indexing needle into the pin hole of the indexing head, and use the special tool with a micrometer to measure the change value. (The micrometer should be connected to the indicating point 36 times the center. The micrometer can be used to measure the change value. The test should make the needle stay in the four positions of every 30 degrees in the hole. Measure the change value and use the value of the change value to obtain the compensation. This test is carried out in the forward and reverse directions and both shall comply with the provisions of this standard. During the test, the needle is in a tensioned state as the test. Note
5.13 When the shaft is at 9, the main shaft is loaded with a micrometer and the straightness is measured (No. 9 in Table 2 of Section 4.4 of this standard) 5.13.1 Test guide
The surface of the working surface should not jump with the lifting surface net! The diameter a.
upward should not exceed 3 mm. Figure 1
h combined level:
5.73.2 Test method
First, the directional scale of the dividing village is in place, and then the special tool with No. 4 Momin width gauge is inserted into the material hole of the dividing head. The dividing head is first leveled with the combined level, and then the verticality of the main axis of the distribution is measured with the combined level. During the test, the "locking state is accompanied by
5.14 Accuracy of the fixed ruler (No. 4.4 of this standard, Table 2 No. 10) 5.14.1 Test tool
n The special mandrel with No. 4 point is shown, the working surface! The parallelism of the axis of the armor body should not be tilted more than 3.2mm, as shown in Figure 2. 5.14.2 Test method (R/T33711995 (measurement according to 25! 1
155:3, 1
First, align the indication of the single-piece directional scale with the special position, and then put the special auxiliary center of the No. 4 true cold gauge into the soil axis hole of the dividing head, and replace the optical inclinometer on the center pusher, and then make the indication of the directional scale 1 less than 3°; 60 print 92\ position. And use optical frequency to test respectively. 5. Instrument performance European protection Lishi safety requirements (Article 4.5 of this standard) according to s 5517 Test
5.16 The block interference force of the effective Ning type instrument is small (technical plan. 1 item! 5.15. 1 Test piece
GB/3371-1995
can produce half or high value fire thousand half <1000+150V upper model benefit. 5.15.2 Test square tooth
Working interference compensation device wiring method: Next:
Number of telephones,
Will the power supply of the test system be headed down to the input high power supply of the model thrower: The test object is turned on and the protection control power supply is turned off, the discharge is in the state of ten discharges, and the \ ten interference "membrane button is pressed to the remaining 1OC0V gear six more than two The light mode is V gear! "Discharge" rotate the group clockwise until a faint discharge sound is heard, and then counterclockwise until the discharge stops, to see if the system is working properly. "Asymmetric" means "initial line ratio" and "symmetric" operation process 5.1/only the busy performance of the device (this standard Section 4.7) is tested according to ZKY002,
6 Inspection rules
6.1 Stability inspection classification
Product inspection is divided into: "inspection and type inspection, 6. 2 Inspection
6.2.1 The inspection of the pieces shall be in accordance with GB2628. 6.2.2 The items of factory inspection can be grouped and the inspection level (11.) The quality level (AQ1) shall meet the requirements in Table 4. Note: AQI is the qualified product for each piece. Technical data
4.4 Central seat 1.2, store 5;t.3.4. E
4. ：4. 4. 34. Original 5. Sequence 6.
Hall stop 1)
When users have special requirements. AQ1. Value of the order is determined by the country, 6.3 Type inspection
6.3.1 When a product is in the market, the product is tested for the new product and the old product is transferred to the factory for trial market testing: b.
After formal production, the structure, materials and process have changed greatly, which may affect the product performance; during formal production, the product should be tested for a month after regular production or after a certain period of production;
When there is a big difference between the factory inspection results and the above type inspection results; when the national quality supervision agency has made a request for type inspection. AQI
Type inspection includes all the emergency tests specified in the standard, and the type six tests will reduce the production volume by random inspection 6.3.2
GB/3371-1995
E.3.3 Type inspection shall be carried out for the second time according to the sample inspection. E.3.4 The items of type approval, 7 level [[.], quality level RQ1.> and extraction scheme should be shown in the table:
Combined cost reduction plan
Technical service sensitivity
4. 1 *In the table, sequence 1. Sequence.
4. 312. 4 Sequence 3, sequence 2,
Sequence 5. Sub-handling 4, some 10I
4. -54. 3
Marking, packaging, transportation and storage
2.1 Marking
. 1. 1 In the road construction, the manufacturer's mark or factory name should be marked;
Product name!
Product model;
. 1.2 Packaging mark
The packaging of the receiver shall comply with the provisions of ZLY003. 7.2 Packaging
7.2.1 The box packaging of the receiver shall comply with the provisions of ZLY003. 7.2.2 The technical documents for the packaging of the receiver shall be as follows: a. Packing list; b. Instructions for delivery of the receiver.
7.3 Transport box label
1.3. The receiver packaged with the package must meet the requirements of transportation and loading, including the expansion of the parts
7.3. There should be no serious vibration or collision, and all accessories should be guaranteed to be free of damage. 131.
7.3.3 The products should be stored in a well-ventilated warehouse and should not be placed together with chemicals, drugs, or other materials. 7.3.4 The product should be shipped as indicated on the packaging box. The warranty period is 10 days. Under the condition of following the warranty rules, if the receiver fails to work properly due to quality problems, the manufacturer should compensate for the delay in production or replacement within 5 days from the date of delivery to the user. However, if the instrument is shipped or packaged for more than three days (from the date of leaving the factory to the date of being stopped from use), the warranty period will be shortened accordingly. Additional remarks: GB/73371-1995 This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China: The technical standard is under the jurisdiction of the National Optical and Optical Instruments Technical Committee. This standard is the responsibility of Guiyang Optical Technology Research Institute.
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