JB/T 3626-1999 Assembly rules for modular fixtures

JB/T 3626-1999 This standard is a revision of JB 3626-84 "Combination Clamp Assembly Code", and has only been re-edited according to relevant regulations. This standard specifies the general provisions of combination clamps, the rational use of parts and the correct assembly method. This standard applies to the assembly of slot series combination clamps. JB/T 3626-1999 Combination Clamp Assembly Code JB/T3626-1999 Standard download decompression password: www.bzxz.net

IC'S 25. 060. 20
Machinery Industry Standard of the People's Republic of China
JB/T3626-1999
Combination Clamp
1999-05-20 Release
Assembly Rules
2000-01-01 Implementation
National Machinery Industry Standard
JB.T3626-1999
This standard is an improvement on JB362684 "Assembly Rules for Combination Clamps". The original version is formulated according to the production characteristics of combination clamps. Its technical content can still meet the current scientific and technological level and adapt to the needs of production and use. This standard is consistent with JB3626-84, only re-edited according to relevant regulations. From the date of implementation, this standard is in accordance with JD3626-84. This standard is proposed by the National Metal Cutting Machine Standardization Technical Committee: This standard is drafted by the National Metal Cutting Machine Standardization Technical Committee Combination Clamp Branch: This standard is drafted by Tianchong Combination Fixture Factory Assembly Station, and the drafter of this standard is Li Zhuyu.
This standard was first issued in October 1984. 1 Scope
Machinery Industry Standards of the People's Republic of China
Combination Clamps
Assembly Rules
This standard specifies the general provisions, reasonable use of elements and correct assembly methods of assembly fixtures: The standard is used to test the assembly of assembly fixture components. 2 Reference standards
JB 3626-1999
The following standards contain provisions that constitute provisions of this standard through reference in this standard. When this standard is issued, the provisions are valid. Existing standards may be revised. All parties using this standard may consider using the latest version of the standard. GB/3177-1997 Smooth parts size inspection JD/T3627i994
Tools and auxiliary tools for assembly of combined optical tools
3 General provisionsWww.bzxZ.net
3. Before assembly, the drawings and technical specifications of the parts must be familiar with the heat treatment, and the assembly plan determined by machine tools, cutting tools and processing methods must be used. The components (equipment) must be assembled and the dimensions must be adjusted, and the assembly must be carried out according to the procedures for the precision inspection of the optical structure.
3.3 The assembled optical tools must meet the following requirements. 3.3.11. Parts positioning should comply with the six-point positioning principle. 3.3.21. Parts clamping should be tight and reliable.
3.3, 3 The assembled tools should be compact and smooth, easy to operate, and properly equipped. The lathe fixtures should be well prepared. 3.3.4 The tools can be easily installed on the machine tool.
3.3. The tools should be equipped with the necessary screws, positioning shafts, full-motion washers and connection plates of the lathe. 3.4 The tools must be inspected and tested before they can be delivered for use. 3.5 The tools related to the processing requirements are generally selected within 1/3~15 of the tolerance requirements of the sample. 4. The components should be carefully selected during assembly.
4. "Select components according to their application characteristics. Do not use components without damaging the components' tolerance." 4.2 Use bolts at the intersection of T-shaped crosses as much as possible. When tightening the larger hole at the bottom of the foundation plate, plug it. 1
4.3 When using the fasteners to fasten the parts near the intersection of the T-shaped crosses of the foundation, appropriate measures should be taken to prevent the T-shaped grooves from being empty. For example, the support parts should be plasticized and padded. 2. Approved by the National Machinery Industry Bureau on May 20, 1999, and implemented on January 1, 2000
Base dynamic system
JB/T36161999
Support parts
Quantity
Recycling
JB/T3626-1999
4.4 Thin T-shaped parts should avoid being directly subjected to rotation. 4.5 When screwing, there should be enough depth 4.6 When tightening, the bottom surface of the V-shaped support shaft workpiece should be completely solid, and there should be no empty space, see Figure 3. The workpiece is the most empty part of the workpiece. 4. 1 When using the main measurement standard to make the hand position, the fire tool should be assembled according to the gear support and other components: 5 Correct assembly method 5. When assembling, remove the dirt and burrs on the joint surface of the components, 5.2 The positioning standard of the components should be based on the technical basis or design basis, 3.3 The positioning connection between components should be adjusted in addition to the direction of the course, and the positioning speed should be sufficient to ensure that the positioning can be measured 5.1 When two points or one point of the workpiece is the hand support surface, it should be installed as an adjustable fixed point. 5.57. The direction of the clamping of the workpiece should be vertical to the main positioning, and the clamping point should be as close as possible to the workpiece. 5.6 When using the pressure plate to press the workpiece, the force arm relationship should be maintained. Under the action of a certain earth force, the workpiece should be pressed as much as possible to obtain a larger clamping force (see Figure 4). 5. When the lower plate is used to press the workpiece, a spring and a flat washer are usually placed under the pressure plate, and a ball washer is placed between the plate and the purple nut, as shown in Figure 4. 5.B The distance from the bottom of the drill to the workpiece hole in the drilling fixture should generally be (0.5-1). The casting parts should be taken as a relatively large value, and the steel parts should be taken as a relatively large value, see Figure 5. 5.9 The system, the creation, and the grinding tool should have a stopper that can withstand the main cutting force. 5.10 When adjusting the clamp, do not hit the dead part with steel rust. 4
Type long board
J8T3626—1999
5.11 Use the following method to reduce the error of adjustment. 5.I1.1 According to the accuracy requirements of the fire tool, select the appropriate measurement according to the provisions of GB/T3177, and select the test sample according to JB, T3627. The measurement master tape positioning should be as accurate as possible or the design accuracy. 5.11.2 When adjusting the rotary drilling and milling fire tool, make the sight and the reference consistent with the rotation center for measurement, or directly measure the rotation center as the reference track:
5.12 When adjusting the measuring base angle clamp, in addition to directly measuring the angle, the position difference between the guide surface of the workpiece angle inclined surface and its bottom surface should be measured according to the needs, see Figure 6. Guide internal positioning shop
Changting surface
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