This standard specifies the technical requirements, marking, rust prevention and packaging of slot series combination die parts. This standard applies to the design, manufacture and finished product acceptance of 8mm, 12mm and 16mm components. JB/T 8336-1996 General Technical Requirements for Slot Series Combination Die Components JB/T8336-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
General Technical Conditions for Slot Series Combination Die Components 1 Subject Content and Scope of Application
JB/T 8336 ---96
This standard specifies the technical requirements, marking, rust prevention and packaging of slot series combination die components (hereinafter referred to as components). This standard applies to the design, manufacture and finished product acceptance of 8mm, 12mm and 16mm components. 2 Reference standards
Thread finish, shoulder distance, undercut, chamfer GB145
Center hole
GB 196
GB 905
GB 907
GB1031
GB 1184
GB 1800
Packaging, storage and transportation pictorial symbols
Basic dimensions of common threads
Tolerances and fits of common threads
Dimensions, shape, weight and allowable deviations of cold-drawn round steelDimensions, shape, weight and allowable deviations of cold-drawn square steelDimensions, shape, weight and allowable deviations of hexagonal steelSurface roughness parameters and their values
Form and position tolerancesTolerances and fits without tolerancesGeneral standard tolerances and basic deviationsGB/T 1804
General tolerances Unspecified tolerances for linear dimensions
GB2851~～2875 Cold punching dies
GB3098.1 Mechanical properties of fasteners
Bolts, screws and studs
GB3098.2 Mechanical properties of fasteners Nuts
GB6403.3 Knurling
GB6403.4 Rounding and chamfering of partsbzxz.net
GB6403.5 Grinding wheel overrun groove|| tt||GB11335 Limit deviation of angle without tolerance GB/T12558 Inspection method for finished products of slot series combination fixture components JB3625 Technical conditions for rust-proof packaging of combination fixture components 3 Technical requirements
3.7 Materials
3.1.1 The materials of components shall comply with the provisions of the corresponding national standards and industry standards 3.1.2 The materials specified in the drawings may be replaced by other materials, but the main performance of the substitute materials shall not be lower than that of the original specified materials. 3.1.3 The cold-drawn round steel, square steel and hexagonal steel used in the components shall comply with the provisions of GB905, GB906 and GB907 respectively. The outer dimensions of the materials for manufacturing screws, studs, screws, nuts and other materials shall comply with the corresponding dimensions of the components, and their outer shapes may not be processed. 3.2 Rough
Approved by the Ministry of Machinery Industry of the People's Republic of China on April 11, 1996 128
Implemented on October 1, 1996
JB/T 833696
3.2.1 The depth of defects on the surface of rough forgings to be processed shall not exceed 2/3 of the mechanical allowance; the non-processed surface shall not have defects such as burn marks, cracks, iron scales, interlayers, oxide scales, etc. 3.2.2 All rough forgings shall be normalized or annealed. 3.3 Heat treatment and surface treatment
3.3.1 All important components that have been carburized shall be artificially aged before finishing. 3.3.2 After heat treatment, the components shall be cleaned to remove oxide scales, salt and alkali and other dirt. Cracks are not allowed on the components. 3.3.3 The non-ground surfaces of steel components (except special processing surfaces and plated surfaces) shall be oxidized, and the color of the oxide film shall be beautiful and even.
3.3.4 The depth of the carburized layer on the surface of the component should be uniform, and the carburized layer is not allowed to change sharply from the surface to the inside. 3.4 Strength of fasteners
The mechanical properties of the series fastening bolts and screws (M16.M12×1.5, M8) shall comply with the provisions of grade 10.9 in GB3098.1; the mechanical properties of the fastening nuts shall comply with the provisions of grade 10 in GB3098.2. 3.5 Machining
3.5.1 The machining of components shall comply with the design drawings and the provisions of this standard. 3.5.2 The intersection angle of the cutting working surface of the cutting edge shall not be blunted and shall be kept sharp. 3.5.3 The cutting edge shall be able to be ground within a certain range, but the performance of the combined die shall not be reduced. 3.5.4 The dimensions and surface roughness of the main parts of the components shall comply with the provisions of Table 1. Table 1
Project name
Location groove
Location hole diameter
Location key and outer circle with positioning function
Slot distance, groove surface distance
Hole surface distance, hole groove distance
Outer shape tolerance grade or tolerance value for supporting, positioning and stamping, mm
(according to GB1800)
0.02~0.06
0. 02~0. 06
3.5.5 The main position tolerances of components shall comply with the provisions of Table 2, Table 2
Project name
Surface roughness parameter R. The mutual parallelism and perpendicularity of the working surface (including the positioning groove) with a value of 1.6, 0.8.0.4μm. The parallelism and perpendicularity of the positioning hole to the working surface. The inclination of the V-shaped surface and the angle surface.
The symmetry of the positioning groove and the groove
The symmetry of the hole and groove of IT6.IT7 level
The coaxiality of the hole and shaft of IT6 and IT7 level
The circular runout of the outer diameter of the shaft component to the center hole at both ends 3.5.6 For holes with a tolerance grade equal to or less than IT7 level, the single element inclusion principle shall be followed. 3.5.7 The general tolerance of the size without tolerance shall be in accordance with the provisions of m in GB/T1804. 3.5.8 The limit deviation of the angle without tolerance shall be in accordance with the provisions of m in GB11335. Surface roughness R value
(according to GB1031)
0. 4 or 0.8
0.4 or 0.8
Tolerance grade (according to (GB1184)
JB/T 8336-96
3.5.9 Guide pins, guide sleeves and die handles shall be designed and selected in accordance with GB2851~2875. 3.5.10 The grinding surface of the component shall not have defects such as burns, bumps, scratches (except for measuring lines and hardness test pressure holes), spots, burrs, rust, etc.
3.5.11 The sharp corners of the component shall be chamfered or rounded, and the chamfers or roundings on the same...components shall be uniform and their dimensions shall comply with the provisions of the design drawings.
3.5.12 Grinding wheels not specified in the drawings The overrun groove shall comply with the provisions of GB6403.5. 3.5.13 The center hole of the component shall comply with the provisions of GB145. 3.5.14 The knurling of the component shall comply with the provisions of GB6403.3. 3.5.15 The surface roughness of the component shall be selected according to the first series of GB1031. 3.5.16 The thread finish, shoulder distance, back groove and chamfer shall be selected according to the general values ​​in GB3. 3.5.17 The basic dimensions of ordinary threads shall comply with the provisions of GB196, and the tolerances shall comply with the provisions of GB197. The internal threads shall be 6H, the external threads shall be 6H. Threads are 6g.
The verticality error of the threaded hole axis to the plane is not greater than 0.5mm over a length of 100mm. 3.5.19 The straightness error of the bolt and screw axis is not greater than 0.5mm over a length of 100mm. 3.5.20 The thread surface is not allowed to have defects such as cracks, crushing, and buckling. 4 Acceptance
4.1 The acceptance of components shall comply with the provisions of the design drawings and technical conditions; the inspection of finished components shall comply with the provisions of GB/T12558. 4.2 Components processed by magnetic suction All components shall be demagnetized, and the residual magnetism of the components shall not attract a steel wire of 0.5mm×25mm. 5 Marking
5.1 The position of the component marking shall comply with the provisions of the drawing. 5.2 The font of the marking shall be uniform, correct, clear and beautiful. 5.3 Main component marking contents:
Component code;
Trademark or factory code;
c. Product grade;
Year and month of manufacture.
5.4 Small-sized components are allowed to be marked with only one characteristic dimension or no marking. 6 Rust prevention and packaging
6.1 The rust prevention and packaging of components shall comply with the provisions of JB3625. 6.2 The box marking shall comply with the provisions of GB191. Additional remarks:
This standard is proposed and managed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is drafted by Guiyang Xintian Precision Optical Instrument Co., Ltd. The main drafter of this standard is Mao Fuxing.
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