Nitriding furnace tool for new energy automobile gear shaft

Abstract

The utility model relates to the technical field of nitriding furnace tools, and discloses a nitriding furnace tool for a new energy automobile gear shaft, the nitriding furnace tool comprises a mounting frame, the mounting frame comprises a base provided with a plurality of ventilation holes and a plurality of limiting rods vertically arranged on the base; the supporting assembly comprises adjusting parts and placing parts which are arranged on the limiting rods, the placing parts are located between every two adjacent adjusting parts in the vertical direction of the same limiting rod, each placing part comprises a material disc and a supporting unit, the material discs are arranged on the limiting rods and provided with a plurality of datum holes, the supporting units are arranged at the datum holes, and the gear shafts are matched with the datum holes in an inserted mode. The supporting unit is used for supporting and limiting the gear shaft inserted into the datum hole. The nitriding furnace tool has the effect that the production cost of the nitriding furnace tool is reduced while the nitriding furnace tool is conveniently adapted to gear shafts of different models.

Description

Technical Field

[0001] The present application relates to the technical field of nitriding furnace tooling, and in particular to a nitriding furnace tooling for a gear shaft of a new energy vehicle. Background Art

[0002] Nitriding is a chemical heat treatment process that allows nitrogen atoms to penetrate into the surface of a workpiece in a certain medium at a certain temperature. Nitriding mainly allows nitrogen atoms to penetrate into the surface of the workpiece, thereby changing the chemical composition and structure of the surface of the workpiece, so that the workpiece can obtain excellent surface properties.

[0003] At present, nitriding treatment of workpieces is mainly carried out through a nitriding furnace. When the workpiece is placed in the nitriding furnace, the workpiece is generally placed on a tooling inside the nitriding furnace first, and then the tooling and the workpiece placed on the tooling are placed inside the nitriding furnace together, and the workpiece placed on the tooling inside the nitriding furnace is nitrided by the nitriding furnace.

[0004] The gear shaft is a common transmission component, generally including a metal shaft and a transmission gear mounted on the metal shaft. The existing nitriding furnace tooling generally includes a mounting frame and a material tray mounted on the mounting frame. The material tray is provided with a number of holes. When the gear shaft is placed on the material tray, the metal shaft of the gear shaft is inserted into the corresponding hole. The inner wall of the corresponding hole limits the gear shaft through the metal shaft, thereby improving the stability of the metal shaft.

[0005] However, different types of gear shafts have different sizes. In order to adapt to different types of gear shafts, it is generally necessary to produce a material tray with an aperture that is suitable for the gear shaft. As a result, there is a defect that the cost of the nitriding furnace tooling to adapt to different types of gear shafts is relatively high. Utility Model Content

[0006] In order to reduce the production cost of nitriding furnace tooling while facilitating adaptation to different types of gear shafts, the present application provides a nitriding furnace tooling for new energy vehicle gear shafts.

[0007] The present application provides a nitriding furnace tooling for a new energy vehicle gear shaft using the following technical solutions:

[0008] A nitriding furnace tool for a new energy vehicle gear shaft, the nitriding furnace tool comprising:

[0009] A mounting frame, the mounting frame comprising a base with a plurality of ventilation holes and a plurality of limit rods vertically mounted on the base;

[0010] A support assembly, the support assembly includes an adjustment portion and a placement portion installed on the limit rod, the placement portion is located between two adjacent adjustment portions in the vertical direction of the same limit rod, the placement portion includes a material tray installed on the limit rod and having a plurality of reference holes, and a support unit installed at the reference holes, the gear shaft and the reference holes are plug-fitted, and the support unit is used to support and limit the gear shaft inserted into the reference hole.

[0011] Optionally, the adjustment portion includes a plurality of reference adjustment cylinders sleeved on the same limiting rod, and the plurality of reference adjustment cylinders are distributed along the vertical direction.

[0012] Optionally, each of the reference holes is arranged as a hexagonal hole.

[0013] Optionally, a plurality of mounting holes corresponding to the limiting rods are provided on the material tray, and the limiting rods and the corresponding mounting holes are plug-fitted.

[0014] Optionally, the support unit includes a support ring plug-fitted with the reference hole and a plurality of limit members mounted on the support ring, wherein the plurality of limit members are circumferentially distributed along the axial direction of the support ring, the gear shaft and the support ring are plug-fitted, and the limit members are used to limit the support ring and the gear shaft.

[0015] Optionally, the limiting member includes a lap block mounted on the outer ring wall of the support ring and a support block mounted on the lap block. After the support ring is placed inside the reference hole, the bottom of the lap block abuts against the top of the material tray, and the top of the support block is used to abut against the bottom of the transmission gear on the gear shaft.

[0016] Optionally, an arc chamfer is provided at the edge of the support block.

[0017] Optionally, a circular arc surface is provided on a side of the support block close to the metal shaft of the gear shaft, and the arc center of the circular arc surface is located on the side of the support block close to the metal shaft of the gear shaft.

[0018] Optionally, a fixing assembly is provided between two adjacent mounting frames, and the fixing assembly includes a fixing rod and fixing tubes installed at both ends of the fixing rod, the two fixing tubes correspond to the limiting rods on the two mounting frames, and the limiting rods and the corresponding fixing tubes are plugged in and matched.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When assembling the nitriding furnace tooling, place the limit rod on the base, select different numbers of reference adjustment cylinders according to the length of the gear shaft, and sleeve the reference adjustment cylinder on the limit rod in the vertical direction. Then, sleeve the mounting hole on the tray on the corresponding limit rod, and make the bottom of the tray and the top of the reference adjustment cylinder collide, and adjust the distance between two adjacent trays by the number of reference adjustment cylinders. Then, place the support ring in the reference hole on the tray, and make the bottom of the overlap block collide with the top of the tray. The tray supports and limits the support ring through the overlap block, so as to complete the assembly of the nitriding furnace tooling. When placing the gear shaft, the gear shaft is inserted into the support ring, and the bottom of the transmission gear of the gear shaft is made to contact the top of the support block. The metal shaft of the gear shaft is supported and limited by multiple support blocks. The multiple support blocks support the gear shaft through the transmission gear of the gear shaft, so as to improve the stability of the placement of the gear shaft. When it is necessary to place gear shafts of different models, different support units can be directly customized. Therefore, while facilitating adaptation to different types of gear shafts, the production cost of nitriding furnace tooling is reduced.

[0021] 2. By placing different numbers of reference adjustment cylinders to change the distance between two adjacent material trays in the vertical direction, the convenience of adapting to gear shafts of different lengths can be improved. At the same time, the reference adjustment cylinders are prefabricated parts of the same model, which further reduces the production cost of the nitriding furnace tooling;

[0022] 3. When two mounting frames need to be spliced ​​together, place the two mounting frames together and make the adjacent vertical side walls of the two bases touch each other. Then, put the two fixing tubes on the limiting rods on the two mounting frames. The fixing rods limit the two mounting frames through the two fixing tubes, so as to improve the convenience of splicing the two mounting frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view showing the gear shaft placed on the nitriding furnace tooling in the embodiment of the present application.

[0024] Figure 2 It is a top view of the lifting gear shaft placed on the nitriding furnace tooling in the embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the support unit structure in the embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Mounting frame; 11. Base; 12. Limit rod; 2. Support assembly; 21. Adjustment part; 22. Placement part; 221. Material tray; 222. Support unit; 2221. Support ring; 2222. Limit piece; 2223. Overlap block; 2224. Support block; 3. Fixing assembly; 31. Fixing rod; 32. Fixing cylinder; 4. Gear shaft. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0029] The embodiment of the present application discloses a nitriding furnace tooling for a gear shaft of a new energy vehicle.

[0030] A nitriding furnace tooling for a gear shaft of a new energy vehicle comprises a mounting frame 1, a support assembly 2 and a fixing assembly 3. A plurality of support assemblies 2 are provided, and the plurality of support assemblies 2 are all mounted on the mounting frame 1, and the plurality of support assemblies 2 are distributed in the vertical direction, and a gear shaft 4 is placed on the support assembly 2, and the gear shaft 4 is supported and limited by the support assembly 2. When multiple mounting frames 1 need to be spliced, two adjacent mounting frames 1 are placed together, and then the two adjacent mounting frames 1 are limited by the fixing assembly 3.

[0031] The mounting frame 1 includes a base 11 and a limiting rod 12. The base 11 is provided with a plurality of ventilation holes for ventilation, and the base 11 is provided with a plurality of plug holes, the plurality of plug holes and the plurality of limiting rods 12 correspond one to one, and each limiting rod 12 is installed on the base 11 through the corresponding plug hole.

[0032] Each limiting rod 12 includes a first limiting rod, a limiting plate, and a second limiting rod. The first limiting rod and the second limiting rod are coaxial, and the limiting plate is located between the first limiting rod and the second limiting rod, and the first limiting rod, the limiting plate, and the second limiting rod are fixedly connected. In the embodiment of the present application, the first limiting rod is a round rod, and the cross section of the second limiting rod is a cross. The first limiting rod is plugged into the corresponding plug hole, and after the first limiting rod is inserted into the corresponding plug hole, the bottom of the limiting plate contacts the top of the base 11.

[0033] The fixing assembly 3 includes a fixing rod 31 and a fixing cylinder 32. Two fixing cylinders 32 are provided, and the two fixing cylinders 32 are respectively located at two ends of the fixing rod 31, and the axes of the two fixing cylinders 32 are parallel, and the two fixing cylinders 32 and the fixing rod 31 are integrally formed.

[0034] When splicing multiple mounting frames 1, two adjacent mounting frames 1 are placed together, and the adjacent side walls of two adjacent bases 11 are made close to each other. Then, the fixing tube 32 is sleeved on the corresponding limiting rods 12 on the two mounting frames 1 to complete the splicing of the two mounting frames 1 and improve the convenience of splicing the two mounting frames 1.

[0035] The supporting assembly 2 includes an adjusting portion 21 and a placing portion 22 .

[0036] There are several adjusting parts 21, and the adjusting parts 21 correspond to the limiting parts. Each adjusting part 21 includes several reference adjusting cylinders, each of which is sleeved on the corresponding limiting rod 12. Different numbers of reference adjusting cylinders are selected according to different lengths of the gear shaft 4. The distance between two adjacent placement parts 22 is changed by different numbers of reference adjusting cylinders. Several reference adjusting cylinders are prefabricated parts of the same model, thereby improving the convenience of adjusting the distance between two adjacent placement parts 22 in the vertical direction, and at the same time, reducing the cost of adjusting the distance between two adjacent placement parts 22 in the vertical direction.

[0037] The placement part 22 includes a material tray 221 and a support unit 222. The material tray 221 is located between two adjacent adjustment parts 21 in the vertical direction. The material tray 221 is provided with a reference hole and a mounting hole. There are a plurality of reference holes, and the plurality of reference holes are through holes, so as to facilitate ventilation and placement of the gear shaft 4. At the same time, in order to improve the working stability of the material tray 221, each reference hole is a regular hexagonal hole.

[0038] The limiting rod 12 corresponds to the mounting hole. When placing the material tray 221, the limiting rod 12 is inserted into the corresponding mounting hole, and the limiting rod 12 limits the material tray 221 through the inner wall of the mounting hole.

[0039] There are a plurality of support units 222, and the plurality of support units 222 correspond to the plurality of reference holes. Each support unit 222 includes a support ring 2221 and a stopper 2222. The support ring 2221 is arranged in a hexagonal ring, and the support ring 2221 is plugged and matched with the corresponding reference hole.

[0040] A plurality of limit members 2222 are provided, and the limit members 2222 are all fixedly mounted on the support ring 2221 , and the limit members 2222 are evenly distributed circumferentially along the axis direction of the support ring 2221 . In the embodiment of the present application, three limit members 2222 are provided.

[0041] Each limiting member 2222 includes a lap block 2223 and a support block 2224. The lap block 2223, the support block 2224 and the support ring 2221 are integrally formed. The lap block 2223 is located close to the outer wall of the support ring 2221, and the support block 2224 is located close to the inner wall of the support ring 2221.

[0042] When the support ring 2221 is placed inside the reference hole, the bottom of the overlap block 2223 is in contact with the top of the tray 221, and the tray 221 supports the support ring 2221 through multiple overlap blocks 2223, so as to improve the convenience and stability of placing the support ring 2221. When placing the gear shaft 4, the gear shaft 4 is inserted into the support ring 2221, and the bottom of the transmission gear of the gear shaft 4 is in contact with the top of the support block 2224, so as to improve the stability of placing the gear shaft 4, and at the same time, it is convenient to nitride the gear shaft 4. In order to reduce the possibility of the support block 2224 scratching the gear shaft, the support block 2224 is arranged in an arc surface on the side close to the axis of the support ring 2221, and the arc center of the arc surface is located on the side of the support block 2224 close to the axis of the support ring 2221, and the support block 2224 is provided with an arc surface at the edge.

[0043] The implementation principle of the nitriding furnace tooling for the gear shaft of a new energy vehicle in the embodiment of the present application is as follows: when installing the nitriding furnace tooling, place the base 11 horizontally, and insert the first limiting rod on the plurality of limiting rods 12 into the corresponding plug-in hole, and make the bottom of the limiting piece contact the top of the base 11. Then, place the support assembly 2 on the second limiting rod in a bottom-to-top order. When placing the support assembly 2, select different numbers of reference adjustment cylinders according to the length of the gear shaft 4, and sleeve the reference adjustment cylinder on the outer periphery of the second limiting rod. Then, sleeve the mounting hole of the material tray 221 on the second limiting rod, support the material tray 221 through the reference adjustment cylinder, and place the support ring 2221 at the corresponding reference hole, so that the bottom of the lap block 2223 and the top of the material tray 221 contact. When placing the gear shaft 4, the gear shaft 4 is inserted into the support ring 2221, and the support block 2224 on the limiter 2222 supports the bottom of the transmission gear of the gear shaft 4, so as to complete the placement of the gear shaft 4. When the diameter of the gear shaft 4 changes, the support unit 222 of the corresponding size can be directly replaced. Therefore, while adapting to gear shafts 4 of different sizes, the cost of producing nitriding furnace tooling is reduced.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nitriding furnace tool for a new energy vehicle gear shaft, characterized in that: The nitriding furnace tooling comprises: A mounting frame (1), the mounting frame (1) comprising a base (11) provided with a plurality of ventilation holes and a plurality of limit rods (12) vertically mounted on the base (11); A support assembly (2), the support assembly (2) comprising an adjusting portion (21) and a placing portion (22) mounted on the limiting rod (12), the placing portion (22) being located between two adjacent adjusting portions (21) in the vertical direction of the same limiting rod (12), the placing portion (22) comprising a material tray (221) mounted on the limiting rod (12) and having a plurality of reference holes and a support unit (222) mounted at the reference holes, the gear shaft (4) and the reference holes being plug-fitted, the support unit (222) being used to support and limit the gear shaft (4) inserted into the reference holes.

2. A nitriding furnace tooling for a gear shaft of a new energy vehicle according to claim 1, characterized in that: The adjustment portion (21) comprises a plurality of reference adjustment cylinders sleeved on the same limiting rod (12), and the plurality of reference adjustment cylinders are distributed along the vertical direction.

3. The nitriding furnace tooling for the gear shaft of a new energy vehicle according to claim 1 is characterized in that: Each of the reference holes is arranged as a hexagonal hole.

4. The nitriding furnace tooling for the gear shaft of a new energy vehicle according to claim 1 is characterized in that: The material tray (221) is provided with a plurality of mounting holes corresponding to the limiting rods (12), and the limiting rods (12) are plug-fitted into the corresponding mounting holes.

5. The nitriding furnace tooling for the gear shaft of a new energy vehicle according to claim 1 is characterized in that: The support unit (222) comprises a support ring (2221) plug-fitted with the reference hole and a plurality of limit members (2222) mounted on the support ring (2221); the plurality of limit members (2222) are circumferentially distributed along the axial direction of the support ring (2221); the gear shaft (4) and the support ring (2221) are plug-fitted; the limit members (2222) are used to limit the support ring (2221) and the gear shaft (4).

6. A nitriding furnace tooling for a gear shaft of a new energy vehicle according to claim 5, characterized in that: The limiting member (2222) comprises a lap block (2223) mounted on the outer wall of the support ring (2221) and a support block (2224) mounted on the lap block (2223); after the support ring (2221) is placed inside the reference hole, the bottom of the lap block (2223) abuts against the top of the material tray (221), and the top of the support block (2224) is used to abut against the bottom of the transmission gear on the gear shaft (4).

7. A nitriding furnace tooling for a gear shaft of a new energy vehicle according to claim 6, characterized in that: The edge of the support block (2224) is provided with a circular arc chamfer.

8. The nitriding furnace tooling for the gear shaft of a new energy vehicle according to claim 6 is characterized by: A circular arc surface is provided on one side of the support block (2224) close to the metal shaft of the gear shaft (4), and the arc center of the circular arc surface is located on the side of the support block (2224) close to the metal shaft of the gear shaft (4).

9. The nitriding furnace tooling for the gear shaft of a new energy vehicle according to claim 1, characterized in that: A fixing assembly (3) is also provided between two adjacent mounting frames (1), the fixing assembly (3) comprising a fixing rod (31) and fixing tubes (32) installed at both ends of the fixing rod (31), the two fixing tubes (32) corresponding to the limiting rods (12) on the two mounting frames (1), and the limiting rods (12) and the corresponding fixing tubes (32) are plug-fitted.

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