Auxiliary tool for gear shaft

Abstract

The utility model relates to an auxiliary tool for a gear shaft, and relates to the technical field of auxiliary tools, the auxiliary tool comprises a cover body, one end of the cover body is provided with a shaft hole, the shaft hole is matched with a connecting shaft, the connecting shaft is inserted in the shaft hole, and the end, provided with the shaft hole, of the cover body abuts against the shaft shoulder of the connecting shaft and the shaft shoulder of a middle shaft. The straightening device has the effect that the connecting shaft subjected to heat treatment is not prone to cracking in the straightening process.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary tooling, and in particular to an auxiliary tooling for a gear shaft. Background Art

[0002] Metal heat treatment is a process in which a metal or alloy workpiece is heated to a suitable temperature in a certain medium, kept at this temperature for a certain period of time, and then cooled at different speeds in different media to control its performance by changing the surface or internal microstructure of the metal material.

[0003] Generally, a gear shaft needs to be heat treated after machining. The gear shaft includes a gear, a center shaft and a connecting shaft. The gear sleeve is arranged on the center shaft and is fixedly connected to the center shaft. The connecting shaft is located at one end of the center shaft and is coaxially arranged with the center shaft. The connecting shaft is fixedly connected to the center shaft, and the shaft diameter of the center shaft is larger than the shaft diameter of the connecting shaft.

[0004] The gear shaft is prone to deformation and bending after heat treatment. Therefore, after heat treatment, the gear shaft needs to be straightened by strong pressure. Due to the different shaft diameters of the connecting shaft and the middle shaft, there is stress concentration at the shoulders of the connecting shaft and the middle shaft. Therefore, the gear shaft is prone to cracking at the shoulders during the straightening process, which leads to the scrapping of the gear shaft. Utility Model Content

[0005] In order to prevent the heat-treated connecting shaft from cracking during the straightening process, the present application provides an auxiliary tooling for a gear shaft.

[0006] The present application provides an auxiliary tooling for a gear shaft, which adopts the following technical solution:

[0007] An auxiliary tooling for a gear shaft comprises a cover body, one end of which is provided with an axial hole, the axial hole being adapted to a connecting shaft, the connecting shaft being inserted into the axial hole, and one end of the cover body with the axial hole abutting against the shoulders of the connecting shaft and the middle shaft.

[0008] By adopting the above technical solution, the cover body is sleeved on the connecting shaft before the gear shaft is heat treated, so that although the connecting shaft participates in the heat treatment, it is not easily affected by the heat treatment process, so that the toughness of the connecting shaft is not easily reduced due to the heat treatment, and the connecting shaft after the heat treatment is not easy to crack during the straightening process.

[0009] Optionally, the cover body is made of high temperature resistant steel.

[0010] By adopting the above technical solution and using high temperature resistant steel to manufacture the cover body, the cover body is not easily deformed due to multiple heat treatments, so that the cover body can be repeatedly used during the heat treatment process of multiple gear shafts.

[0011] Optionally, a disassembly piece is provided on the cover body, and the disassembly piece is used to assist in removing the cover body from the connecting shaft.

[0012] By adopting the above technical solution and providing a disassembly piece, the user can save more effort when disassembling the cover body.

[0013] Optionally, the disassembly member is a disassembly ring, which is located at one end of the cover body where the axial hole is opened, and the disassembly ring is sleeved on the cover body and fixedly connected to the cover body.

[0014] By adopting the above technical solution, the user applies a thrust to the side of the disassembly ring close to the connecting shaft, so that the disassembly ring can drive the cover body to escape from the connecting shaft.

[0015] Optionally, a plurality of anti-slip grooves are provided on the cover body.

[0016] By adopting the above technical solution, when the cover body is removed by the disassembly ring, the anti-slip groove on the cover body can increase the friction between the user's hand and the cover body, so that the user can remove the cover body more labor-saving.

[0017] Optionally, the outer side wall of the disassembly ring is in the shape of a hexagonal prism.

[0018] By adopting the above technical solution, the hexagonal column-shaped disassembly ring contacts the ground through the straight edge, so that the cover body is not easy to roll on the ground.

[0019] Optionally, the disassembly member is a pull ring, which is located at an end of the cover body away from the connecting shaft and is fixedly connected to the cover body.

[0020] By adopting the above technical solution, the user applies a pulling force to the pull ring in a direction away from the cover body, so that the pull ring can drive the cover body to escape from the connecting shaft.

[0021] Optionally, the disassembly part is an internal threaded ring, which is located at one end of the cover body away from the connecting shaft and is coaxially arranged with the cover body, and is fixedly connected to the cover body.

[0022] By adopting the above technical solution, when the heat treatment of the gear shaft is completed, the bolt is screwed into the internal threaded ring through the thread, so that the bolt can provide an additional grip for the cover body, allowing the user to drive the cover body out of the connecting shaft by pulling the bolt.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the cover, the toughness of the connecting shaft is not easily reduced due to heat treatment, so that the connecting shaft is not easily cracked during the straightening process;

[0025] 2. By using high temperature resistant steel to make the cover, the cover is not easily deformed during the heat treatment process, so that the cover can be used repeatedly;

[0026] 3. By providing a disassembly piece, it is easier to remove the cover from the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of Example 1 of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of the shaft hole for explaining the embodiment 1 of the present application;

[0029] Figure 3 is a schematic diagram of the structure of Example 2 of the present application;

[0030] Figure 4 It is a structural diagram of Example 3 of the present application.

[0031] Description of reference numerals:

[0032] 1. Cover body; 11. Anti-slip groove; 12. Axis hole;

[0033] 2. Disassembly ring; 3. Pull ring; 4. Internal thread ring. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses an auxiliary tooling for a gear shaft.

[0036] Embodiment 1:

[0037] Reference Figure 1 and Figure 2 An auxiliary tooling for a gear shaft includes a cover body 1, which is cylindrical and has an axial hole 12 at one end close to the connecting shaft. The axial hole 12 is circular and matched with the connecting shaft. The cover body 1 is made of German standard 1.4849 heat-resistant cast steel.

[0038] When in use, the cover body 1 is sleeved on the connecting shaft through the axial hole 12 until one end of the cover body 1 with the axial hole 12 abuts against the shoulders of the connecting shaft and the middle shaft, so that the cover body 1 can isolate the connecting shaft from the outside world, thereby preventing the connecting shaft from being easily reduced in toughness due to heat treatment, and preventing the connecting shaft from being easily cracked during the straightening process.

[0039] Reference Figure 2A disassembly part is provided on the cover body 1, and the disassembly part is a disassembly ring 2. The disassembly ring 2 is ring-shaped, and the outer wall is hexagonal. The disassembly ring 2 is located at one end of the cover body 1 where the axial hole 12 is opened. The disassembly ring 2 is sleeved on the cover body 1 and fixedly connected to the cover body 1. The disassembly ring 2 is made of German standard 1.4849 heat-resistant cast steel.

[0040] The cover body 1 is provided with two anti-skid grooves 11 , which are in the shape of an annular groove, and the edges of the anti-skid grooves 11 are arc-shaped. The two anti-skid grooves 11 are arranged in sequence along the length direction of the cover body 1 .

[0041] When in use, the user holds the portion of the cover 1 where the anti-slip groove 11 is provided, and applies a pulling force to the cover 1, while applying a pushing force to the side of the disassembly ring 2 close to the connecting shaft. The pulling force and the pushing force act simultaneously, so that the cover 1 can be disengaged from the connecting shaft.

[0042] The implementation principle of an auxiliary tooling for a gear shaft in an embodiment of the present application is: by sleeved on the cover body 1, the cover body 1 can isolate the connecting shaft from the external environment, so that the toughness of the connecting shaft is not easily reduced due to heat treatment, and the connecting shaft is not easily cracked during the straightening process.

[0043] The anti-slip groove 11 and the disassembly ring 2 are used in combination, so that the user can remove the cover body 1 from the connecting shaft with less effort.

[0044] Embodiment 2:

[0045] Reference Figure 3 The difference between this embodiment and embodiment 1 is that the disassembly part is a pull ring 3, which is in a circular ring shape. The pull ring 3 is located at the end of the cover body 1 away from the connecting axis and is fixedly connected to the end face of the cover body 1. The central axis of the pull ring 3 is perpendicular to the central axis of the cover body 1, and the pull ring 3 is made of German standard 1.4849 heat-resistant cast steel.

[0046] During use, the user applies a pulling force to the pull ring 3 in a direction away from the connecting shaft, so that the pull ring 3 can drive the cover body 1 to escape from the connecting shaft.

[0047] Embodiment 3:

[0048] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the disassembly part is an internal thread ring 4, which is in a circular ring shape and has threads on the inner wall. The internal thread ring 4 is coaxially fixedly connected to the cover body 1, and the internal thread ring 4 is made of German standard 1.4849 heat-resistant cast steel.

[0049] When in use, the bolt is screwed into the internal thread ring 4 through the thread. The bolt can provide an additional grip for the cover body 1, so that the user can drive the cover body 1 to disengage the connecting shaft through the bolt.

[0050] 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. An auxiliary tooling for a gear shaft, characterized in that: The cover body (1) comprises a cover body (1), one end of which is provided with an axial hole (12), the axial hole (12) being adapted to a connecting shaft, the connecting shaft being inserted into the axial hole (12), and one end of the cover body (1) having the axial hole (12) being in contact with the shoulders of the connecting shaft and the central shaft.

2. The auxiliary tooling for a gear shaft according to claim 1, characterized in that: The cover body (1) is made of high temperature resistant steel.

3. The auxiliary tooling for a gear shaft according to claim 1, characterized in that: The cover body (1) is provided with a disassembly piece, and the disassembly piece is used to assist in removing the cover body (1) from the connecting shaft.

4. The auxiliary tooling for a gear shaft according to claim 3, characterized in that: The disassembly member is a disassembly ring (2), the disassembly ring (2) is located at one end of the cover body (1) where the axial hole (12) is opened, the disassembly ring (2) is sleeved on the cover body (1) and is fixedly connected to the cover body (1).

5. The auxiliary tooling for a gear shaft according to claim 4, characterized in that: The cover body (1) is provided with a plurality of anti-slip grooves (11).

6. The auxiliary tooling for a gear shaft according to claim 4, characterized in that: The outer side wall of the disassembly ring (2) is in the shape of a hexagonal column.

7. The auxiliary tooling for a gear shaft according to claim 3, characterized in that: The disassembly member is a pull ring (3), the pull ring (3) is located at an end of the cover body (1) away from the connecting shaft, and is fixedly connected to the cover body (1).

8. The auxiliary tooling for a gear shaft according to claim 3, characterized in that: The disassembly member is an internal thread ring (4), the internal thread ring (4) is located at an end of the cover body (1) away from the connecting shaft and is coaxially arranged with the cover body (1), and the internal thread ring (4) is fixedly connected to the cover body (1).

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