CN220547911U

CN220547911U - Gear box shell machining clamp

Info

Publication number: CN220547911U
Application number: CN202321723264.0U
Authority: CN
Inventors: 吕红辉; 刘思军; 葛廷哲; 晋雪才; 燕磊
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2024-03-01
Anticipated expiration: 2033-06-30

Abstract

The utility model provides a processing clamp for a gearbox housing, which comprises a horizontally arranged bottom plate, wherein three support blocks are arranged on the bottom plate in a triangular shape, the horizontal plane shared by the support surfaces at the upper ends of the support blocks is used for supporting the outer end face of a connecting flange connected with a main housing on the gearbox housing, the pressing plate is pressed on the back face of the outer end face of the connecting flange of the gearbox housing through the pressing plate at the outer side of the support blocks, the axial direction of the gearbox housing is vertically arranged and fixed, the circle where the triangle surrounded by the three support blocks on the bottom plate is consistent with the circular ring area of the connecting flange connected with the main housing on the gearbox housing, the preliminary support for the gearbox housing is realized, and the support provided by an auxiliary support cylinder further improves the support stability for the gearbox housing.

Description

Gear box shell machining clamp

Technical Field

The utility model belongs to the field of fixtures, and particularly relates to a processing fixture for a gearbox shell.

Background

The gearbox housing is usually molded by die casting, and further processing is required for the molded gearbox housing, so that the gearbox housing needs to be clamped and fixed, but because the appearance of the gearbox housing is complex, and the gearbox housing often needs to be processed at a plurality of parts on a production line, the gearbox housing processing clamp capable of effectively stably fixing the irregularly-shaped gearbox housing is required, and further processing at a later stage is convenient.

The name of the clamp for processing the gearbox shell (patent number CN 105364558A) discloses a disc-shaped clamp body, a plurality of auxiliary limiting blocks are arranged on the clamp body, clamping grooves are formed in the auxiliary limiting blocks, limiting of the gearbox shell is achieved through the clamping grooves, a plurality of cushion blocks are fixed on the clamp body, a pressing plate is arranged on one side of each cushion block, and the pressing plate is connected with the clamp body through a second inner hexagon bolt.

In the scheme, the clamping groove of the auxiliary limiting block is used for limiting the gearbox shell, and the gearbox shell is fixed through the pressing plate on one side of the cushion block. Then the clamping groove of the auxiliary limiting block and the cushion block pressed by the pressing plate can form a plurality of clamping points in the pressing-down process of the pressing plate, and the plurality of clamping points are difficult to ensure that the shell is easy to deform due to the fact that the plurality of clamping points are on the same plane.

The DHT is a special gearbox on a hybrid electric vehicle, the gearbox consists of a front shell and a main shell, the front shell and the main shell are cast and molded and then are finished, the finished parts comprise an axial hole, an axial end face, a radial or parallel radial hole and other parts, and the problem that the machining of multiple parts can be realized by providing a clamp for one-time clamping is currently and rapidly needed to be solved.

Disclosure of Invention

The utility model aims to provide a processing clamp for a gearbox shell, which improves the clamping effect and the clamping efficiency and simultaneously avoids deformation of the gearbox shell in the processing process.

In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a processing anchor clamps of gearbox housing, includes the bottom plate of putting, its characterized in that: the bottom plate is provided with three support blocks which are distributed in a triangular shape, a horizontal plane shared by support surfaces at the upper ends of the support blocks is used for supporting the outer end face of a connecting flange connected with the main shell on the gearbox shell, a pressing plate is arranged beside the support blocks and is pressed on the back face of the outer end face of the connecting flange of the gearbox shell, and an auxiliary support cylinder is arranged at the position, close to the outside of a triangular area, formed by the three support blocks.

In the scheme, three support blocks which are distributed in a triangular mode are arranged on the bottom plate, a horizontal plane shared by support surfaces at the upper ends of the support blocks is used for supporting the outer end face of a connecting flange connected with the main shell on the gearbox shell, the press plate is pressed on the back face of the outer end face of the connecting flange of the gearbox shell through the press plate on the outer side of the support blocks, the axial direction of the gearbox shell is vertically arranged and fixed, a circle surrounded by the three support blocks on the bottom plate coincides with a circular ring area of the connecting flange connected with the main shell on the gearbox shell, preliminary support of the gearbox shell is achieved, and support provided by the auxiliary support cylinder further improves support stability of the gearbox shell.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged view of the structure of the locating pin of the present utility model;

FIG. 3 is a structural schematic diagram of a transmission housing;

fig. 4 is a schematic view of the assembled state of the present utility model.

Detailed Description

For ease of illustration, the utility model is described with respect to DHT, a machining example of the front housing of a dedicated gearbox on a hybrid vehicle.

A gear box housing machining jig as shown in fig. 1 to 3, comprising a flat base plate 10, characterized in that: the bottom plate 10 is provided with three support blocks 12 which are distributed in a triangular shape, a horizontal plane shared by support surfaces at the upper ends of the support blocks 12 is used for supporting the outer end face of a connecting flange connected with the main shell on the gearbox shell A, a pressing plate 132 is arranged beside the support blocks 12, the pressing plate 132 is pressed on the back face of the outer end face of the connecting flange of the gearbox shell A, and an auxiliary support cylinder 14 is arranged at the position close to the outside of a triangular area surrounded by the three support blocks 12.

In the scheme, the outer end face of the connecting flange of the front shell of the gearbox, which is connected with the main shell, is used as a positioning reference. The three support blocks 12 distributed in a triangle form on the bottom plate 10 are used for supporting the outer end face of the connecting flange connected with the main shell on the gearbox shell A, the outer end face of the connecting flange is downwards pressed on the support face of the upper end of the support block 12, the circular ring forming the connecting flange is actually equivalent to the triangular outer cross circle formed by the three support blocks 12, the support block 12 contributes to the basic support of the gearbox shell A, and the pressing plate 132 is pressed on the back face of the outer end face of the connecting flange of the gearbox shell A through the pressing plate 132 on the outer side of the support block 12, so that the gearbox shell A is fixed; since the transmission housing a is not of a more regular shape, such as the arrangement position of each rotating shaft and the installation position of the differential mechanism reserved on the transmission housing a, as shown in fig. 2 and 3, the plumb line passing through the center of mass or the center of mass of the transmission housing a is not coincident with the center of the connecting flange of the transmission housing a, but has an offset distance, the auxiliary supporting cylinder 14 is arranged for this purpose, that is, the auxiliary supporting cylinder 14 is arranged on one side of the dead weight eccentric moment of the transmission housing a, and auxiliary supporting is provided for the auxiliary supporting cylinder, so that the reliability and stability of the supporting are improved.

Preferably, the supporting blocks 12 comprise a first supporting block 121 and a second supporting block 122 for supporting two ends of an upper edge A1 of the gearbox housing A and a third supporting block 123 for supporting a lower left edge A2 of the gearbox housing A, a compressing cylinder 13 is arranged outside a triangle area surrounded by the three supporting blocks 12 and located near a vertex angle, the upper end of a piston rod 131 of the compressing cylinder 13 arranged vertically is fixedly connected with one end of a pressing plate 132 in an axial direction, and the other end of the pressing plate 132 extends above the triangle area surrounded by the supporting blocks 12 in a suspending mode.

In the above scheme, the three supporting blocks 12 are located at two ends of the upper edge A1 and at the lower left edge A2 of the gearbox housing a, support is provided for the gearbox housing a, the upper end of the piston rod 131 of the pressing cylinder 13 is axially and fixedly connected with one end of the pressing plate 132, the pressing plate 132 can be clamped or loosened under the telescopic movement of the piston rod 131, the pressing plate 132 can rotate around the shaft core of the connecting shaft to the avoiding position of the placing path of the gearbox housing a, and the gearbox housing a is conveniently placed and supported to the supporting positions provided by the three supporting blocks 12 and the auxiliary supporting cylinder 14.

Preferably, for quick positioning of the gearbox housing a, the bottom plate 10 is provided with a positioning pin 11, the positioning pin 11 comprising two positions at the left upper edge A4 and at the right edge A3, i.e. the positioning pin 11 comprises a positioning pin 11 in a first position at the left upper edge A4 and a positioning pin 11 in a second position at the right edge A3.

Preferably, an auxiliary supporting cylinder 14 with a telescopic direction along the vertical direction is arranged at the right side edge A3 of the gearbox housing A. The auxiliary supporting cylinder 14 is arranged at the position of the right side edge A3 of the gearbox housing A and is arranged outside a triangular area surrounded by the three supporting blocks 12, namely, the supporting is carried out on one side of the dead weight eccentric moment of the gearbox housing A, and the supporting reliability and stability in the machining process are ensured.

The pressing cylinder 13 comprises a piston rod 131 and a pressing plate 132, and a clamping surface is formed by the lower plate surface of the pressing plate 132 and the upper top surface of the supporting block 12 and is used for pressing a connecting flange of the gearbox housing A. In the above scheme, the lower plate surface of the pressing plate 132 and the upper top surface of the supporting block 12 form a clamping surface to be in surface contact with the connecting flange of the gearbox housing A, so that the stability of the gearbox housing A during processing is ensured.

The positioning pin 11 is arranged in a pin hole of the upper section of the pin 111, a pressure spring is arranged in the pin hole, the upper end of the pressure spring is propped against the lower end of the positioning pin 11, and the upper section of the positioning pin 111 is lifted by the elasticity provided by the spring and is exposed at the upper end of the pin 11.

In the above scheme, the positioning hole matched with the positioning pin 11 is formed in the gearbox housing a, preferably, the positioning pin 11 with the pressure spring is selected for positioning, the positioning pin 11 can be inserted into the positioning hole in the gearbox housing a, when the positioning hole is opposite to the positioning pin 11 and the gearbox housing a continuously falls, the pressure spring is pressed and contracted, the positioning pin 11 moves downwards and continuously falls until the connecting flange of the gearbox housing a is contacted with the three supporting blocks 12 and the auxiliary supporting cylinder 14, the positioning pin 11 not only provides positioning, but also provides proper elastic supporting function, and the collision phenomenon is avoided when the gearbox housing a is contacted with the supporting blocks 12 and the auxiliary supporting cylinder 14.

Claims

1. The utility model provides a processing anchor clamps of gearbox housing, includes bottom plate (10) of putting, its characterized in that: three supporting blocks (12) which are distributed in a triangular mode are arranged on the bottom plate (10), a horizontal plane shared by supporting surfaces at the upper ends of the supporting blocks (12) is used for supporting the outer end face of a connecting flange connected with the main shell on the gearbox shell (A), a pressing plate (132) is arranged on the side of the supporting blocks (12), the pressing plate (132) is pressed on the back face of the outer end face of the connecting flange of the gearbox shell (A), and an auxiliary supporting cylinder (14) is arranged at the position, close to the outer portion of a triangular area, surrounded by the three supporting blocks (12).

2. The gearbox housing machining fixture of claim 1, wherein: the supporting blocks (12) comprise a first supporting block (121) and a second supporting block (122) which are used for supporting the two ends of the upper edge (A1) of the gearbox housing (A) and a third supporting block (123) which is used for supporting the lower left edge (A2) of the gearbox housing (A), the outside of a triangle area surrounded by the three supporting blocks (12) is provided with a compression cylinder (13) which is located near a vertex angle, the upper end of a piston rod (131) of the compression cylinder (13) which is vertically arranged is fixedly connected with one end of a pressing plate (132) in an axial direction, and the other end of the pressing plate (132) extends above the triangle area surrounded by the supporting blocks (12).

3. The gearbox housing machining fixture of claim 1, wherein: the bottom plate (10) is provided with a positioning pin (11) which is vertically arranged, and the positioning pin (11) comprises two parts which are positioned at the left upper edge (A4) and the right edge (A3).

4. The gearbox housing machining fixture of claim 1, wherein: an auxiliary supporting cylinder (14) with the telescopic direction along the vertical direction is arranged at the right side edge (A3) of the gearbox shell (A).

5. The gearbox housing machining fixture of claim 1, wherein: the compressing cylinder (13) comprises a piston rod (131) and a pressing plate (132), and a clamping surface is formed by the lower plate surface of the pressing plate (132) and the upper top surface of the supporting block (12) and is used for compressing a connecting flange of the gearbox shell (A).

6. A gear box housing machining jig according to claim 3, wherein: the locating pin (11) is arranged in a pin hole of the upper section of the pin (111), a pressure spring is arranged in the pin hole, the upper end of the pressure spring is propped against the lower end of the locating pin (11), and the upper section of the locating pin (11) is lifted by the elasticity provided by the spring and is exposed at the upper end of the pin (111).