A tool for surface heat treatment of a shift guide block

Abstract

The present invention belongs to the field of heat treatment tooling, and specifically discloses a tooling for surface heat treatment of a shift guide block, including an adaptive clamping release mechanism, a two-way pressure relief mechanism, an automatic locking mechanism, and an external frame assembly. The present invention creatively proposes an automatic locking mechanism, and through a clever structural design, the technical effect of pushing automatic locking and pushing out automatic unlocking is achieved without using an electric control device; not only does the present invention creatively propose an automatic locking mechanism, and through a clever structural design, the technical effect of pushing automatic locking and pushing out automatic unlocking is achieved without using an electric control device.

Description

Technical Field

[0001] The invention belongs to the technical field of heat treatment tooling, and in particular relates to a tooling for surface heat treatment of a shift guide block. Background Art

[0002] The shift guide block is a commonly used part in automobile gearboxes. Most of them are in the form of thin sheets. Some of them have a sleeve at one end for passing the shaft. In order to improve their surface hardness and wear resistance, surface heat treatment is often required. The surface treatment of such small parts generally requires tooling support so that a batch of parts can be heat treated at one time.

[0003] The existing general tooling for heat treatment is a screen frame placed on a partition plate, with the workpiece lying flat on the screen frame. For this kind of thin shift guide block, if a horizontal loading method is adopted, there will be a temperature difference between the upper and lower surfaces of the guide block, and temperature stress will exist on the upper and lower end surfaces. During the structural transformation, due to the difference in structural transformation time and speed, structural stress will also be generated, which will eventually cause the guide block to bulge or concave deformation, making it difficult to ensure related dimensions such as flatness.

[0004] If the vertical placement method is adopted, the cooling speed of the two end faces is relatively uniform, and the changes in related dimensions such as flatness are small. However, the use of a through rod will cause the size of the guide block hole to be deformed or out of tolerance. Summary of the invention

[0005] In view of the above situation, in order to solve the above problems, the present invention proposes a surface heat treatment tool that is easy to operate and can vertically place shift guide blocks in batches; in order to adapt to workpieces of different specifications, this solution designs the combined swing rack assembly into a structure that can be flexibly combined; at the same time, in order to simplify the operating steps during the disassembly and assembly process, this solution creatively proposes an automatic locking mechanism, which, through a clever structural design, achieves the technical effect of pushing automatic locking and pushing out automatic unlocking without using an electric control device. When using this structure, since the operator's hands do not need to touch the interlayer rack and its interior, the risk of being scalded is greatly reduced.

[0006] Moreover, in order to realize automatic clamping and release of the workpiece, the present invention also proposes a two-way pressure relief mechanism, and realizes the function of automatic pressure relief when the pressure is too high through the pressure relief exhaust component, which can not only maintain the clamping force during the heating process (the clamping force will not be too large or too small), but also complete automatic unloading when repeatedly cooled to room temperature.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a tool for surface heat treatment of a shift guide block, including an adaptive clamping and releasing mechanism, a two-way pressure relief mechanism, an automatic locking mechanism and an external frame assembly, wherein the adaptive clamping and releasing mechanism array is arranged on the external frame assembly, the two-way pressure relief mechanism is arranged on one side of the adaptive clamping and releasing mechanism, and the automatic locking mechanism is arranged on the other side of the adaptive clamping and releasing mechanism.

[0008] Furthermore, the adaptive clamping and releasing mechanism includes a combined swing rack assembly, a top hollow clamping assembly and a guide block body, wherein the top hollow clamping assembly is arranged on the combined swing rack assembly, and the guide block body is arranged in the top hollow clamping assembly.

[0009] Through the flexible setting of the combined swing rack assembly, it can be suitable for clamping guide block bodies of different width specifications. Through the stable change of gas and air pressure in the top hollow clamping assembly, the clamping pressure of the top hollow clamping assembly on the guide block body can be adaptively controlled, and the material return can be automatically completed after cooling is completed.

[0010] Preferably, the combined swing rack assembly includes a swing rack cross bar, a swing rack longitudinal bar and a push-pull handle, the swing rack cross bar and the swing rack longitudinal bar are fixedly connected, the push-pull handle is detachably arranged on the swing rack longitudinal bar on one side, and a fixed baffle is provided on the push-pull handle; the top hollow clamping assembly includes a hollow clamping base and a metal sealing plate, the hollow clamping base is fixedly connected to the inner side of the swing rack cross bar, and the metal sealing plate is arranged on the hollow clamping base.

[0011] The push-pull handle and the automatic locking mechanism are both detachable. By replacing the longitudinal rods of the swing rack of different specifications, the distance between the two sets of top hollow clamping components can be adjusted to adapt to guide block bodies of different widths.

[0012] As a further preferred embodiment of the present invention, the top hollow clamping assembly also includes a limit block, the metal sealing plate and the hollow clamping base form a closed chamber, both ends of the metal sealing plate are provided with edge recesses, the limit block array is arranged on the outside of the metal sealing plate, the guide block body is composed of a flat plate portion and a guide block sleeve portion, and the flat plate portion is clamped between the limit blocks.

[0013] The metal sealing piece is a thin metal piece with a certain flexibility. The protrusion of the metal sealing piece can be controlled by changing the air pressure in the chamber composed of the hollow clamping base and the metal sealing piece, thereby achieving the clamping and fixing of the guide block body and the loosening and unloading.

[0014] Furthermore, the automatic locking mechanism includes an elastic telescopic component and a torsion control component, the elastic telescopic component is arranged on the adaptive clamping and releasing mechanism, and the torsion control component is arranged on the elastic telescopic component.

[0015] Through the collision between the automatic locking mechanism and the sliding top plate, not only can the technical effect of automatically locking the adaptive clamping release mechanism after being in place be achieved, but also when disassembling the adaptive clamping release mechanism, the two steps of unlocking the adaptive clamping release mechanism and pushing out the adaptive clamping release mechanism can be completed in sequence by pushing the handle part.

[0016] Preferably, the elastic telescopic assembly includes a fixed column, a telescopic cap and a telescopic reset spring. The fixed column is detachably arranged on the longitudinal rod of the swing rack on the other side. A column base is arranged at the bottom of the fixed column. A threaded guide groove is arranged on the end surface of the fixed column. A blind hole is arranged on the telescopic cap. A threaded guide boss matching the threaded guide groove is arranged inside the blind hole. Through the guidance between the threaded guide groove and the threaded guide boss, the telescopic cap will rotate while telescoping relative to the fixed column. The telescopic reset spring is arranged between the column base and the telescopic cap.

[0017] Through the automatic rotation of the telescopic cap, the rotation direction of the locking plate can be controlled in linkage, thereby adaptively controlling the locking and unlocking of the adaptive clamping and releasing mechanism.

[0018] As a further preferred embodiment of the present invention, the torsion control assembly includes a locking plate and a rotation control torsion spring, the locking plate is composed of a central sleeve portion and symmetrically arranged locking wing plates, one end of the rotation control torsion spring is fixedly connected to the telescopic cap, and the other end of the rotation control torsion spring is fixedly connected to the central sleeve portion.

[0019] By rotating and controlling the rotational elastic storage and release of the torsion spring, the locking plate can be at the appropriate angle at the appropriate time, thereby successively achieving the technical effects of vertical entry, rotation to horizontal position after reaching the specified position, rotation unlocking, and vertical exit.

[0020] Furthermore, the two-way pressure relief mechanism includes a gas pipeline, an air intake assembly and a pressure relief exhaust assembly, the air intake assembly is arranged in the gas pipeline, and the pressure relief exhaust assembly is arranged in the air intake assembly; one end of the gas pipeline is connected to the hollow clamping base, and the other end of the gas pipeline is provided with a bell mouth portion.

[0021] Through the intake and exhaust control of the two-way pressure relief mechanism, the gas pressure and gas volume in the closed chamber can be controlled during the temperature change, thereby achieving the technical goal of being able to clamp at the initial low temperature, still being able to maintain clamping at the intermediate high temperature, and automatically unloading at the final low temperature.

[0022] Preferably, the intake assembly includes an intake valve seat, an intake valve core and an intake spring, the intake valve seat is fixedly connected to the interior of the bell-mouth portion, the intake valve seat is provided with an intake ramp portion, the intake valve core is provided with a valve core ramp portion matching the intake ramp portion, the intake spring is arranged between the valve core ramp portion and the bell-mouth portion, and guide wing plate portions matching the inner hole of the intake valve seat are evenly distributed in an annular manner on the outer wall of the intake valve core.

[0023] As a further preferred embodiment of the present invention, the pressure relief exhaust assembly includes a pressure relief valve core, a cross pressure relief support and a pressure relief spring, the intake valve core is provided with a valve core through hole portion, the end of the valve core through hole portion is provided with a pressure relief slope portion, the contour of the pressure relief valve core matches the pressure relief slope portion, the cross pressure relief support is fixedly connected to the valve core through hole portion, and the pressure relief spring is arranged between the pressure relief valve core and the cross pressure relief support.

[0024] The pressure relief exhaust component can automatically exhaust and release the pressure when the internal pressure of the hollow clamping base is too high. By changing the total amount of gas, not only can the air pressure clamping force be kept stable when the temperature rises (no danger will occur due to excessive pressure), but also the technical effect of automatic contraction and releasing the clamping when the temperature drops can be achieved due to the reduction in the total amount of gas.

[0025] Furthermore, the external frame assembly includes a partition frame, a fixed frame and a sliding top plate, the side of the partition frame is provided with a through side transverse groove and a side longitudinal groove, wherein the side transverse grooves are arranged in an array, the cross bar of the swing material rack is snap-fitted and slidably arranged in the side transverse groove, the longitudinal bar of the swing material rack is snap-fitted and slidably arranged in the side longitudinal groove, the combined swing material rack assembly is arranged in an array, and bolt holes are also provided on the partition frame.

[0026] Preferably, the fixing frame is provided with a blind hole portion, the interlayer frame is fixed to the fixing frame by means of bolts passing through the bolt holes and the threaded mounting platform, the sliding top plate is slidably arranged on the fixing frame, and the sliding top plate is provided with a handle portion.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] (1) Through the flexible setting of the combined swing rack assembly, it can be suitable for clamping guide block bodies of different width specifications. Through the stable change of gas and air pressure in the top hollow clamping assembly, the clamping pressure of the top hollow clamping assembly on the guide block body can be adaptively controlled, and the material can be automatically returned after cooling.

[0029] (2) The push-pull handle and the automatic locking mechanism are both detachable. By replacing the longitudinal rods of the swing rack of different specifications, the distance between the two sets of top hollow clamping assemblies can be adjusted to adapt to guide block bodies of different width specifications.

[0030] (3) The metal sealing sheet is a thin metal sheet with a certain degree of flexibility. The protrusion of the metal sealing sheet can be controlled by changing the air pressure in the chamber composed of the hollow clamping base and the metal sealing sheet, thereby achieving the clamping and fixing of the guide block body and the release and unloading.

[0031] (4) Through the collision between the automatic locking mechanism and the sliding top plate, not only can the technical effect of automatically locking the adaptive clamping release mechanism after it is in place be achieved, but also when the adaptive clamping release mechanism is disassembled, the two steps of unlocking the adaptive clamping release mechanism and pushing out the adaptive clamping release mechanism can be completed in sequence by pushing the handle part.

[0032] (5) Through the automatic rotation of the telescopic cap, the rotation direction of the locking plate can be controlled in linkage, thereby adaptively controlling the locking and unlocking of the adaptive clamping release mechanism.

[0033] (6) By rotating and controlling the storage and release of the rotational elasticity of the torsion spring, the locking plate can be placed at a suitable angle at a suitable time, thereby achieving the technical effects of vertical entry, rotation to horizontal position after reaching the specified position, rotation unlocking, and vertical exit.

[0034] (7) Through the intake and exhaust control of the two-way pressure relief mechanism, the gas pressure and gas volume in the closed chamber can be controlled during the temperature change process, thereby achieving the technical purpose of being able to clamp at the initial low temperature, still being able to maintain clamping at the middle high temperature, and automatically unloading at the final low temperature.

[0035] (8) The pressure relief exhaust component can automatically exhaust and release the pressure when the internal pressure of the hollow clamping base is too high. By changing the total amount of gas, not only can the air pressure clamping force be kept stable when the temperature rises (no danger will occur due to excessive pressure), but also the technical effect of automatically shrinking and releasing the clamping force when the temperature drops can be achieved due to the reduction in the total amount of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional diagram of a tool for surface heat treatment of a shift guide block proposed by the present invention;

[0037] Figure 2 This is a front view of a tooling for surface heat treatment of a shift guide block proposed by the present invention;

[0038] Figure 3 It is a left view of a tool for surface heat treatment of a shift guide block proposed by the present invention;

[0039] Figure 4 A top view of a tooling for surface heat treatment of a shift guide block proposed by the present invention;

[0040] Figure 5 for Figure 3A cross-sectional view along the cutting line AA;

[0041] Figure 6 for Figure 2 A cross-sectional view along the cutting line BB;

[0042] Figure 7 for Figure 2 A cross-sectional view along the cutting line CC;

[0043] Figure 8 An exploded view of a tooling for surface heat treatment of a shift guide block proposed by the present invention;

[0044] Fig. 9 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0045] Fig.10 for Figure 5 A partial enlarged view of the middle II;

[0046] Fig.11 for Figure 5 A partial enlarged view of the middle part III;

[0047] Fig.12 for Figure 8 A partial enlarged view of the middle IV;

[0048] Fig.13 for Figure 8 A partial enlarged view of point V in the middle.

[0049] Among them, 1. Adaptive clamping and releasing mechanism, 2. Two-way pressure relief mechanism, 3. Automatic locking mechanism, 4. External frame assembly, 5. Combined swing rack assembly, 6. Top hollow clamping assembly, 7. Guide block body, 8. Swing rack cross bar, 9. Swing rack longitudinal bar, 10. Push-pull handle, 11. Hollow clamping base, 12. Metal sealing piece, 13. Limiting block, 14. Flat plate, 15. Guide block sleeve, 16. Edge concave part, 17. Gas pipeline, 18. Intake assembly, 19. Pressure relief exhaust assembly, 20. Bell mouth, 21. Intake valve seat, 22. Intake valve core, 23. Intake spring, 24. Pressure relief valve core, 25. Cross pressure relief support, 26. Pressure relief spring , 27, air intake ramp portion, 28, valve core ramp portion, 29, guide wing plate portion, 30, valve core through hole portion, 31, pressure relief ramp portion, 32, elastic telescopic component, 33, torsion control component, 34, fixed column, 35, telescopic cap, 36, telescopic return spring, 37, locking plate, 38, rotation control torsion spring, 39, column base portion, 40, threaded guide groove, 41, blind hole portion, 42, threaded guide boss, 43, center sleeve portion, 44, locking wing plate, 45, interlayer frame, 46, fixed frame, 47, sliding top plate, 48, side transverse groove, 49, side longitudinal groove, 50, bolt hole, 51, threaded mounting table, 52, handle portion, 53, fixed baffle.

[0050] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0053] like Figure 1 to Figure 13As shown, the present invention proposes a tool for surface heat treatment of a shift guide block, including an adaptive clamping and releasing mechanism 1, a two-way pressure relief mechanism 2, an automatic locking mechanism 3 and an external frame assembly 4, wherein an array of the adaptive clamping and releasing mechanism 1 is arranged on the external frame assembly 4, the two-way pressure relief mechanism 2 is arranged on one side of the adaptive clamping and releasing mechanism 1, and the automatic locking mechanism 3 is arranged on the other side of the adaptive clamping and releasing mechanism 1.

[0054] The external frame assembly 4 includes a partition frame 45, a fixed frame 46 and a sliding top plate 47. The side of the partition frame 45 is provided with a through side transverse groove 48 and a side longitudinal groove 49, wherein the side transverse groove 48 is arranged in an array, the swing rack cross bar 8 is snap-fitted and slidably arranged in the side transverse groove 48, and the swing rack longitudinal bar 9 is snap-fitted and slidably arranged in the side longitudinal groove 49. The combined swing rack assembly 5 is arranged in an array, and the partition frame 45 is also provided with bolt holes 50.

[0055] The fixing frame 46 is provided with a blind hole portion 41 , the interlayer frame 45 is fixed to the fixing frame 46 by means of bolts passing through bolt holes 50 and threaded mounting platforms 51 , the sliding top plate 47 is slidably disposed on the fixing frame 46 , and the sliding top plate 47 is provided with a handle portion 52 .

[0056] The adaptive clamping and releasing mechanism 1 comprises a combined swing rack assembly 5, a top hollow clamping assembly 6 and a guide block body 7. The top hollow clamping assembly 6 is arranged on the combined swing rack assembly 5, and the guide block body 7 is arranged in the top hollow clamping assembly 6.

[0057] Through the flexible setting of the combined swing rack assembly 5, it can be suitable for clamping the guide block body 7 of different width specifications. Through the stable change of the gas and the air pressure change in the top hollow clamping assembly 6, the clamping pressure of the top hollow clamping assembly 6 on the guide block body 7 can be adaptively controlled, and the material return can be automatically completed after the cooling is completed.

[0058] The combined swing rack assembly 5 includes a swing rack cross bar 8, a swing rack longitudinal bar 9 and a push-pull handle 10. The swing rack cross bar 8 and the swing rack longitudinal bar 9 are fixedly connected. The push-pull handle 10 is detachably arranged on the swing rack longitudinal bar 9 on one side. A fixed baffle 53 is arranged on the push-pull handle 10. The top hollow clamping assembly 6 includes a hollow clamping base 11 and a metal sealing plate 12. The hollow clamping base 11 is fixedly connected to the inner side of the swing rack cross bar 8, and the metal sealing plate 12 is arranged on the hollow clamping base 11.

[0059] The push-pull handle 10 and the automatic locking mechanism 3 are both detachable. By replacing the longitudinal rods 9 of the swing rack with different specifications, the distance between the two groups of top hollow clamping assemblies 6 can be adjusted to adapt to the guide block bodies 7 with different width specifications.

[0060] The top hollow clamping assembly 6 also includes a limit block 13. The metal sealing piece 12 and the hollow clamping base 11 form a closed chamber. The two ends of the metal sealing piece 12 are provided with edge recesses 16. The limit block 13 array is arranged on the outside of the metal sealing piece 12. The guide block body 7 is composed of a flat plate portion 14 and a guide block sleeve portion 15. The flat plate portion 14 is clamped between the limit blocks 13.

[0061] The metal sealing sheet 12 is a thin metal sheet with a certain flexibility. The protrusion amplitude of the metal sealing sheet 12 can be controlled by changing the air pressure in the chamber formed by the hollow clamping base 11 and the metal sealing sheet 12, thereby achieving the clamping and fixing of the guide block body 7 and the loosening and unloading.

[0062] The two-way pressure relief mechanism 2 includes a gas pipeline 17, an air intake assembly 18 and a pressure relief exhaust assembly 19. The air intake assembly 18 is arranged in the gas pipeline 17, and the pressure relief exhaust assembly 19 is arranged in the air intake assembly 18; one end of the gas pipeline 17 is connected to the hollow clamping base 11, and the other end of the gas pipeline 17 is provided with a bell mouth portion 20.

[0063] Through the intake and exhaust control of the two-way pressure relief mechanism 2, the gas pressure and the amount of gas in the closed chamber can be controlled accordingly during the temperature change, thereby achieving the technical purpose of being able to clamp at the initial low temperature, still being able to maintain clamping at the intermediate high temperature, and automatically unloading at the final low temperature.

[0064] The intake assembly 18 includes an intake valve seat 21, an intake valve core 22 and an intake spring 23. The intake valve seat 21 is fixedly connected to the interior of the bell-mouth portion 20. The intake valve seat 21 is provided with an intake slope portion 27. The intake valve core 22 is provided with a valve core slope portion 28 matching the intake slope portion 27. The intake spring 23 is arranged between the valve core slope portion 28 and the bell-mouth portion 20. The outer wall of the intake valve core 22 is evenly distributed with guide wing portions 29 that match the inner hole of the intake valve seat 21.

[0065] The pressure relief exhaust assembly 19 includes a pressure relief valve core 24, a cross pressure relief support 25 and a pressure relief spring 26. A valve core through hole portion 30 is provided on the intake valve core 22, and a pressure relief slope portion 31 is provided at the end of the valve core through hole portion 30. The contour of the pressure relief valve core 24 matches the pressure relief slope portion 31. The cross pressure relief support 25 is fixedly connected to the valve core through hole portion 30, and the pressure relief spring 26 is arranged between the pressure relief valve core 24 and the cross pressure relief support 25.

[0066] The pressure relief exhaust component 19 can automatically exhaust and release pressure when the internal pressure of the hollow clamping base 11 is too high. By changing the total amount of gas, not only can the air pressure clamping force be kept stable when the temperature rises (no danger will occur due to excessive pressure), but also the technical effect of automatically shrinking and releasing the clamping when the temperature drops can be achieved due to the reduction in the total amount of gas.

[0067] The automatic locking mechanism 3 includes an elastic telescopic component 32 and a torsion control component 33 . The elastic telescopic component 32 is arranged on the adaptive clamping and releasing mechanism 1 , and the torsion control component 33 is arranged on the elastic telescopic component 32 .

[0068] Through the collision between the automatic locking mechanism 3 and the sliding top plate 47, not only can the technical effect of automatically locking the adaptive clamping release mechanism 1 after being in place be achieved, but also when disassembling the adaptive clamping release mechanism 1, the two steps of unlocking the adaptive clamping release mechanism 1 and pushing out the adaptive clamping release mechanism 1 can be completed in sequence by pushing the handle part 52.

[0069] The elastic telescopic component 32 includes a fixed column 34, a telescopic cap 35 and a telescopic reset spring 36. The fixed column 34 is detachably arranged on the longitudinal rod 9 of the swing rack on the other side. A column base portion 39 is arranged at the bottom of the fixed column 34. A threaded guide groove 40 is arranged on the end surface of the fixed column 34. A blind hole portion 41 is arranged on the telescopic cap 35. A threaded guide boss 42 matching the threaded guide groove 40 is arranged inside the blind hole portion 41. Through the guidance between the threaded guide groove 40 and the threaded guide boss 42, the telescopic cap 35 will rotate while telescoping relative to the fixed column 34. The telescopic reset spring 36 is arranged between the column base portion 39 and the telescopic cap 35.

[0070] Through the automatic rotation of the telescopic cap 35 , the rotation direction of the locking piece 37 can be controlled in linkage, thereby adaptively controlling the locking and unlocking of the adaptive clamping and releasing mechanism 1 .

[0071] The torsion control assembly 33 includes a locking plate 37 and a rotation control torsion spring 38. The locking plate 37 is composed of a central sleeve portion 43 and symmetrically arranged locking wing plates 44. One end of the rotation control torsion spring 38 is fixedly connected to the telescopic cap 35, and the other end of the rotation control torsion spring 38 is fixedly connected to the central sleeve portion 43.

[0072] By rotating and controlling the rotational elastic storage and release of the torsion spring 38, the locking plate 37 can be at a suitable angle at a suitable time, thereby successively achieving the technical effects of vertical entry, rotation to horizontal position after reaching the specified position, rotation unlocking, and vertical exit.

[0073] When in use, the user first needs to fix the interlayer frame 45 on the fixed frame 46 by bolts, and then select the appropriate length of the swing rack longitudinal rod 9 according to the specifications of the guide block body 7 and assemble them, and then insert the assembled combined swing rack assembly 5 and the top hollow clamping assembly 6 into the interlayer frame 45 from the side, at this time, the swing rack cross bar 8 is slid into the side transverse groove 48, and the swing rack longitudinal rod 9 is slid into the side longitudinal groove 49;

[0074] After the telescopic cap 35 abuts against the sliding top plate 47, the telescopic cap 35 cannot move forward. At this time, the push-pull handle 10 is continued to be pushed, and the telescopic cap 35 will rotate under the threaded transmission of the threaded guide groove 40 and the threaded guide boss 42, and the telescopic return spring 36 is compressed at the same time; when the telescopic cap 35 rotates, it has a tendency to rotate with the locking plate 37 through the rotation control torsion spring 38, but at this time, since the locking wing plate 44 is still in the side longitudinal groove 49, it cannot rotate. Therefore, at this time, the rotation control torsion spring 38 stores elastic potential energy through its own torsional deformation;

[0075] As the push-pull handle 10 continues to be pushed, when the fixed baffle 53 contacts the side of the partition rack 45, the locking wing plate 44 also just extends out from the side longitudinal groove 49, and the locking plate 37 that is limited by the side longitudinal groove 49 is lost. Under the elastic force of the rotation control torsion spring 38, the locking wing plate 44 rotates half a circle and changes from a vertical state to a horizontal state, thereby completing the locking and fixation of the combined swing rack assembly 5.

[0076] Then, room temperature air is filled into the hollow clamping base 11 through the bell-mouth portion 20 until the internal air pressure reaches an appropriate value. During this process, the pressure relief exhaust assembly 19 will act as a closed whole and slide together with the intake valve core 22; then, the guide block body 7 is inserted into the gap between the limit blocks 13 in turn. At this time, since the air pressure in the hollow clamping base 11 is relatively high, and the two ends of the metal sealing piece 12 are provided with edge recesses 16 that are conducive to the overall deformation of the metal sealing piece 12, the metal sealing piece 12 will undergo a small convex deformation at the gap of the limit block 13, which can clamp and fix the guide block body 7.

[0077] Then, the device is placed in a furnace for heat treatment. The main heating area is the area inside the interlayer rack 45. Although the area outside the interlayer rack 45 will radiate heat, the temperature will be significantly lower than the inside of the interlayer rack 45 by taking heat insulation measures.

[0078] As the temperature in the furnace increases, the temperature and pressure of the gas in the hollow clamping base 11 will also increase accordingly. When the pressure in the hollow clamping base 11 increases to a certain value, it will overcome the elastic force of the pressure relief spring 26 and push open the pressure relief valve core 24 to complete the pressure relief. Therefore, when the heating is completed, the internal pressure of the hollow clamping base 11 is the set pressure, and no danger will occur due to excessive pressure.

[0079] After the heat treatment is completed, the device is taken out as a whole and laid horizontally, and the guide block sleeve portion 15 is located below the flat plate portion 14;

[0080] Then wait for cooling. As the temperature decreases, the gas pressure in the hollow clamping base 11 will also decrease. However, since part of the gas has been discharged through the pressure relief exhaust component 19 during the heating process, when the gas in the hollow clamping base 11 cools to room temperature again, the pressure will be much lower than the initial state.

[0081] Therefore, the cooled metal sealing sheet 12 cannot clamp and fix the guide block body 7. At this time, the guide block body 7 will separate from the top hollow clamping component 6 and fall down under the action of its own weight, completing automatic unloading.

[0082] After unloading is completed, inflation, loading and heat treatment can be carried out again.

[0083] When it is necessary to replace the longitudinal rod 9 of the swing rack with a different length, it is only necessary to push the handle part 52 in the direction of the adaptive clamping release mechanism 1. By sliding the top plate 47 to squeeze the telescopic cap 35, the telescopic cap 35 and the locking plate 37 can continue to rotate. During this process, the telescopic return spring 36 remains in a compressed state. When the locking wing plate 44 rotates to an angle corresponding to the side longitudinal groove 49, the locking state of the combined swing rack assembly 5 is automatically released, and it will slide out a certain distance under the elastic force of the telescopic return spring 36. Then, the push-pull handle 10 can be pulled to remove the combined swing rack assembly 5.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0085] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A tool for surface heat treatment of a shift guide block, characterized in that: The invention comprises an adaptive clamping and releasing mechanism (1), a two-way pressure relief mechanism (2), an automatic locking mechanism (3) and an external frame assembly (4), wherein the adaptive clamping and releasing mechanism (1) is arranged in an array on the external frame assembly (4), the two-way pressure relief mechanism (2) is arranged on one side of the adaptive clamping and releasing mechanism (1), and the automatic locking mechanism (3) is arranged on the other side of the adaptive clamping and releasing mechanism (1); The adaptive clamping and releasing mechanism (1) comprises a combined swing rack assembly (5) and a top hollow clamping assembly (6), wherein the top hollow clamping assembly (6) is arranged on the combined swing rack assembly (5), and the guide block body (7) is arranged in the top hollow clamping assembly (6); The two-way pressure relief mechanism (2) comprises a gas pipeline (17), an air intake assembly (18) and a pressure relief exhaust assembly (19), wherein the air intake assembly (18) is arranged in the gas pipeline (17), and the pressure relief exhaust assembly (19) is arranged in the air intake assembly (18); The automatic locking mechanism (3) comprises an elastic telescopic component (32) and a torsion control component (33); the elastic telescopic component (32) is arranged on the adaptive clamping and releasing mechanism (1); and the torsion control component (33) is arranged on the elastic telescopic component (32); The top hollow clamping assembly (6) comprises a hollow clamping base (11) and a metal sealing plate (12), wherein the hollow clamping base (11) is fixedly connected to the inner side of the swing rack cross bar (8), and the metal sealing plate (12) is arranged on the hollow clamping base (11); The top hollow clamping assembly (6) further comprises a limit block (13), the metal sealing piece (12) and the hollow clamping base (11) form a closed chamber, both ends of the metal sealing piece (12) are provided with edge recesses (16), the limit block (13) array is arranged on the outside of the metal sealing piece (12), the guide block body (7) comprises a flat plate portion (14) and a guide block sleeve portion (15), and the flat plate portion (14) is clamped between the limit blocks (13).

2. The tooling for surface heat treatment of a shift guide block according to claim 1, characterized in that: The combined swing rack assembly (5) comprises a swing rack cross bar (8), a swing rack longitudinal bar (9) and a push-pull handle (10); the swing rack cross bar (8) and the swing rack longitudinal bar (9) are fixedly connected; the push-pull handle (10) is detachably arranged on the swing rack longitudinal bar (9) on one side; and a fixed baffle (53) is arranged on the push-pull handle (10).

3. The tooling for surface heat treatment of a shift guide block according to claim 2, characterized in that: The elastic telescopic assembly (32) comprises a fixed column (34), a telescopic cap (35) and a telescopic return spring (36); the fixed column (34) is detachably arranged on the longitudinal rod (9) of the swing rack on the other side; a column base portion (39) is arranged at the bottom of the fixed column (34); a threaded guide groove (40) is arranged on the end surface of the fixed column (34); a blind hole portion (41) is arranged on the telescopic cap (35); a threaded guide boss (42) matching the threaded guide groove (40) is arranged inside the blind hole portion (41); through the guidance between the threaded guide groove (40) and the threaded guide boss (42), the telescopic cap (35) can rotate while telescoping relative to the fixed column (34); and the telescopic return spring (36) is arranged between the column base portion (39) and the telescopic cap (35).

4. The tooling for surface heat treatment of a shift guide block according to claim 3, characterized in that: The torsion control assembly (33) comprises a locking plate (37) and a rotation control torsion spring (38), wherein the locking plate (37) is composed of a central sleeve portion (43) and symmetrically arranged locking wing plates (44), one end of the rotation control torsion spring (38) is fixedly connected to the telescopic cap (35), and the other end of the rotation control torsion spring (38) is fixedly connected to the central sleeve portion (43).

5. The tooling for surface heat treatment of a shift guide block according to claim 4, characterized in that: One end of the gas pipeline (17) is connected to the hollow clamping base (11), and the other end of the gas pipeline (17) is provided with a bell mouth portion (20).

6. The tooling for surface heat treatment of a shift guide block according to claim 5, characterized in that: The air intake assembly (18) comprises an air intake valve seat (21), an air intake valve core (22) and an air intake spring (23); the air intake valve seat (21) is fixedly connected to the interior of the bell mouth portion (20); the air intake valve seat (21) is provided with an air intake slope portion (27); the air intake valve core (22) is provided with a valve core slope portion (28) matching the air intake slope portion (27); the air intake spring (23) is arranged between the valve core slope portion (28) and the bell mouth portion (20); and guide wing plate portions (29) matching the inner hole of the air intake valve seat (21) are evenly distributed in an annular shape on the outer wall of the air intake valve core (22).

7. The tooling for surface heat treatment of a shift guide block according to claim 6, characterized in that: The pressure relief exhaust assembly (19) comprises a pressure relief valve core (24), a cross pressure relief support (25) and a pressure relief spring (26); the intake valve core (22) is provided with a valve core through hole portion (30); the end of the valve core through hole portion (30) is provided with a pressure relief slope portion (31); the contour of the pressure relief valve core (24) matches the pressure relief slope portion (31); the cross pressure relief support (25) is fixedly connected to the valve core through hole portion (30); and the pressure relief spring (26) is arranged between the pressure relief valve core (24) and the cross pressure relief support (25).

8. The tooling for surface heat treatment of a shift guide block according to claim 7, characterized in that: The external frame assembly (4) comprises a layer frame (45), a fixed frame (46) and a sliding top plate (47); the side of the layer frame (45) is provided with a through side transverse groove (48) and a side longitudinal groove (49); the side transverse groove (48) is arranged in an array; the swing rack cross bar (8) is slidably engaged in the side transverse groove (48); the swing rack longitudinal bar (9) is slidably engaged in the side longitudinal groove (49); and the layer frame (45) is also provided with a bolt hole (50).

9. The tooling for surface heat treatment of a shift guide block according to claim 8, characterized in that: The fixing frame (46) is provided with a blind hole portion (41), the interlayer frame (45) is fixed to the fixing frame (46) by means of bolts passing through bolt holes (50) and threaded mounting platforms (51), the sliding top plate (47) is slidably disposed on the fixing frame (46), and the sliding top plate (47) is provided with a handle portion (52).

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