Transmission case casting heat treatment auxiliary tool

Abstract

The utility model relates to an auxiliary tool for heat treatment of a transmission case casting, the transmission case casting is of a shell-shaped structure and is provided with an input end and two output ends, the input end is located between the two output ends, assembly holes are formed in the opposite side faces of the output ends, and reinforcing rib plates are arranged on the inner wall of the side face where the input end is located; the device is characterized by comprising a support adjusting frame and a locking bracket, the locking bracket is arranged at the edge of the assembly hole of the transmission case casting, the locking bracket is used for clamping the edge of the assembly hole, and the supporting adjusting frame is connected to a reinforcing rib plate of the transmission case casting to support the locking bracket in the vertical direction; in the heat treatment process, the thin-wall area on the periphery of the whole assembly hole can be effectively supported, and the problem of collapse deformation in the heat treatment process is avoided; by using the auxiliary tool, the qualification rate of products after heat treatment of the transmission case casting is improved, and an additional correction procedure is not needed.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for castings, and in particular to an auxiliary tooling for heat treatment of transmission box castings. Background Technology

[0002] In transmission box castings, mounting holes are typically provided opposite the input port for assembling the transmission structure within the transmission box. However, after casting, heat treatment is required to eliminate stress. Since transmission box castings are thin-walled structures, and there is no support along the thin walls for a considerable distance around the mounting holes, slight collapse and deformation of the thin walls around the mounting holes occur under their own weight during heat treatment, resulting in substandard products. Therefore, an auxiliary tooling for heat treatment of transmission box castings is needed to address this problem. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an auxiliary tooling for heat treatment of transmission box castings, which solves the problem of collapse and deformation around the assembly hole on one side of a typical transmission box during heat treatment.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: an auxiliary tooling for heat treatment of a transmission box casting, wherein the transmission box casting has a shell-shaped structure and has an input end and two output ends, wherein the input end is located between the two output ends, and an assembly hole is provided on the side opposite to the output ends, and a reinforcing rib is provided on the inner wall of the side where the input end is located; its innovation lies in: including a support adjustment frame and a locking bracket;

[0005] The support adjustment frame includes a support base, a screw sleeve, and an adjustment screw; the support base has a U-shaped structure and is fastened to the top of the reinforcing rib plate. Bolt holes are opened on the side of the support base, and the support base is locked and fixed to the reinforcing rib plate by bolts.

[0006] The threaded sleeve is disposed on the top of the support base, and the threaded sleeve has an internal thread along the vertical direction;

[0007] The adjusting screw is engaged with the internal thread of the screw sleeve in the vertical direction, and a rotating block is fixedly provided in the circumferential direction of the adjusting screw. The height of the adjusting screw can be controlled by manually driving the rotating block to rotate the adjusting screw.

[0008] The locking bracket is located directly above the support adjustment bracket. The locking bracket includes a U-shaped clip and a fastening bolt. The opening of the U-shaped clip is horizontally oriented, and the opening of the U-shaped clip is nested on the edge of the assembly hole, so that the lower inner wall of the U-shaped clip is supported on the casting around the assembly hole. The upper side of the U-shaped clip is provided with a threaded hole, and the fastening bolt locks the U-shaped clip in the assembly hole. The lower surface of the U-shaped clip contacts the top end of the adjusting screw, and the adjusting screw supports the U-shaped clip to maintain its horizontal position.

[0009] Furthermore, the lower surface of the U-shaped clip is provided with a concave arc cavity that mates with the top end of the adjusting screw; the top end of the adjusting screw is provided with a convex arc that mates with the concave arc cavity of the U-shaped clip.

[0010] The advantages of this utility model are:

[0011] 1) In this utility model, a locking bracket is set at the edge of the assembly hole of the transmission box casting. The locking bracket is used to hold the edge of the assembly hole, and the locking bracket is supported vertically by a support adjustment bracket connected to the reinforcing rib plate of the transmission box casting. During the heat treatment process, the thin-walled area around the entire assembly hole can be effectively supported, avoiding the problem of collapse and deformation during the heat treatment process. The use of this auxiliary tooling improves the pass rate of the transmission box casting after heat treatment, and no additional correction process is required. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a structural diagram of a transmission box casting, which is an auxiliary tooling for heat treatment of a transmission box casting according to the present invention.

[0014] Figure 2 This is a schematic diagram of the assembly state of an auxiliary tooling for heat treatment of a transmission box casting according to the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1 Figure 2 The diagram shows an auxiliary tooling for heat treatment of a transmission box casting. The transmission box casting has a shell-like structure and has one input end and two output ends. The input end is located between the two output ends, and an assembly hole is provided on the side opposite to the output ends. A reinforcing rib plate 3 is provided on the inner wall of the side where the input end is located. The diagram also includes a support adjustment frame 1 and a locking bracket 2.

[0018] The support adjustment frame 1 includes a support base 11, a screw sleeve 12 and an adjustment screw 13; the support base 11 has a gate-shaped structure and is fastened to the top of the reinforcing rib plate 3. Bolt holes are opened on the side of the support base 11, and the support base 11 is locked and fixed to the reinforcing rib plate 3 by bolts.

[0019] The threaded sleeve 12 is disposed on the top of the support base 11, and the threaded sleeve 12 has an internal thread along the vertical direction.

[0020] The adjusting screw 13 is threaded with the internal thread of the screw sleeve 12 along the vertical direction, and a rotating block is fixedly provided on the circumference of the adjusting screw 13. The height of the adjusting screw 13 can be controlled by manually driving the rotating block to rotate the adjusting screw 13.

[0021] The locking bracket 2 is located directly above the support adjustment bracket 11. The locking bracket 2 includes a U-shaped clip 21 and a fastening bolt. The opening of the U-shaped clip 21 is horizontally oriented, and the opening of the U-shaped clip 21 is nested on the edge of the assembly hole, so that the lower inner wall of the U-shaped clip 21 is supported on the casting around the assembly hole. The upper side of the U-shaped clip 21 is provided with a threaded hole, and the U-shaped clip 21 is locked in the assembly hole by the fastening bolt. The lower surface of the U-shaped clip 21 contacts the top end of the adjusting screw 13, and the adjusting screw 13 supports the U-shaped clip 21 to maintain its horizontal position.

[0022] The lower surface of the U-shaped clip 21 is provided with a concave arc cavity that mates with the top end of the adjusting screw 13; the top end of the adjusting screw 13 is provided with a convex arc that mates with the concave arc cavity of the U-shaped clip.

[0023] The working principle of this utility model is as follows: a locking bracket is set at the edge of the assembly hole of the transmission box casting. The locking bracket is used to hold the edge of the assembly hole, and a support adjustment bracket is connected to the reinforcing rib plate of the transmission box casting to support the locking bracket in the vertical direction. During the heat treatment process, the thin-walled area around the entire assembly hole can be effectively supported, avoiding the problem of collapse and deformation that occurs during the heat treatment process. The use of this auxiliary tooling improves the pass rate of the transmission box casting after heat treatment, and no additional correction process is required.

[0024] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A heat treatment auxiliary fixture for a transmission box casting, wherein the transmission box casting has a shell-like structure and has one input end and two output ends, with the input end located between the two output ends, and assembly holes are provided on the opposite sides of the output ends, and reinforcing ribs are provided on the inner wall of the side where the input end is located; characterized in that: Includes support adjustment bracket and locking bracket; The support adjustment frame includes a support base, a screw sleeve, and an adjustment screw; the support base has a U-shaped structure and is fastened to the top of the reinforcing rib plate; bolt holes are opened on the side of the support base, and the support base is locked and fixed to the reinforcing rib plate by bolts. The threaded sleeve is disposed on the top of the support base, and the threaded sleeve has an internal thread along the vertical direction; The adjusting screw is engaged with the internal thread of the screw sleeve in the vertical direction, and a rotating block is fixedly provided in the circumferential direction of the adjusting screw. The height of the adjusting screw can be controlled by manually driving the rotating block to rotate the adjusting screw. The locking bracket is located directly above the support adjustment bracket. The locking bracket includes a U-shaped clip and a fastening bolt. The opening of the U-shaped clip is horizontally oriented, and the opening of the U-shaped clip is nested on the edge of the assembly hole, so that the lower inner wall of the U-shaped clip is supported on the casting around the assembly hole. The upper side of the U-shaped clip is provided with a threaded hole, and the fastening bolt locks the U-shaped clip in the assembly hole. The lower surface of the U-shaped clip contacts the top end of the adjusting screw, and the adjusting screw supports the U-shaped clip to maintain its horizontal position.

2. The auxiliary tooling for heat treatment of a transmission box casting according to claim 1, characterized in that: The lower surface of the U-shaped clamp is provided with a concave arc cavity that mates with the top end of the adjusting screw; the top end of the adjusting screw is provided with a convex arc that mates with the concave arc cavity of the U-shaped clamp.

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