Machining clamp for torque converter shell of backhoe loader

Abstract

The utility model discloses a machining clamp for a torque converter shell of a backhoe loader. The machining clamp comprises a clamp body, a positioning mandrel, a stud, a nut, a supporting stud, an inner pressing plate, a first screw, a step nut, an outer pressing plate, a first cushion block, a second cushion block, a second screw, an outer stud and a positioning stud. The positioning mandrel is fixed at the upper end of the clamp body through four screws (1); the two cushion blocks (1) and the cushion block (2) are respectively fixed at the upper end of the clamp body through a screw (2); the stud is screwed into the threaded hole of the positioning mandrel and is fixed by a nut; the supporting stud, the outer stud and the positioning stud are screwed into threaded holes of the clamp body and fixed through nuts. The inner pressing plate penetrates into the stud through the U-shaped groove and is fixed by the step nut; the outer pressing plate penetrates into the outer stud through the U-shaped groove and is fixed through the step nut. The device is simple and compact in structure, low in manufacturing cost, high in machining precision of the torque converter shell of the backhoe loader and reliable to use, and solves the problem that the machining size of the torque converter shell in the prior art is out of tolerance.

Description

Technical Field

[0001] The utility model relates to the technical field of a backhoe loader torque converter assembly machining auxiliary device, in particular to a backhoe loader torque converter housing machining fixture. Background Art

[0002] As an important component in the transmission system of the backhoe loader, the torque converter housing of the backhoe loader supports and protects the various components of the torque converter, and plays the role of connecting and fixing the gearbox.

[0003] The torque converter housing of the backhoe loader needs to meet high-precision flatness, parallelism and other shape and position requirements to ensure the sealing of the connection with the gearbox. However, since the wall thickness of the torque converter housing of the backhoe loader is relatively thin and it has two ears, it is in a cantilever state when processing its end face, resulting in the dimension after processing often being out of tolerance and affecting the benchmark and accuracy of subsequent housing processing. Summary of the invention

[0004] The purpose of the utility model is to solve the above defects and provide a processing fixture for the torque converter housing of an excavator loader which has a simple and compact structure, low manufacturing cost, high processing precision and reliable use, so as to solve the problem of out-of-tolerance processing size of the torque converter housing in the prior art.

[0005] To achieve the above purpose, the utility model of the torque converter housing processing fixture for an excavator loader includes a clamp body 1, a positioning mandrel 2, a stud 3, a nut 4, a support stud 5, an inner pressure plate 6, a screw ①7, a step nut 8, an outer pressure plate 9, a pad ①10, a pad ②11, a screw ②12, an outer stud 13 and a positioning stud 14; the positioning mandrel 2 is fixed to the upper end of the clamp body 1 by four screws ①7, and two pads ①10 and one pad ②11 are each fixed to the upper end of the clamp body 1 by a screw ②12; the stud 3 is screwed into the threaded hole of the positioning mandrel 2 and fixed by the nut 4; the support stud 5, the outer stud 13 and the positioning stud 14 are screwed into the threaded hole of the clamp body 1 and fixed by the nut 4; the inner pressure plate 6 penetrates the stud 3 through the U-shaped groove and is fixed by the step nut 8; the outer pressure plate 9 penetrates the outer stud 13 through the U-shaped groove and is fixed by the step nut 8.

[0006] The utility model of the processing fixture of the torque converter housing of the excavator loader has the following technical characteristics and beneficial effects:

[0007] 1. Through the precise coordination of the three pads and the pressure plate, the position accuracy of the circular runout of the shell stop end face is ensured, which provides an important foundation for the subsequent processing based on the stop;

[0008] 2. The torque converter housing is positioned and limited by the positioning mandrel to ensure the coaxiality between the stop and the center hole;

[0009] 3. When clamping the shell through the positioning studs, the operator can easily locate it and use it, and avoid the shell from rotating during the vertical lathe processing;

[0010] 4. The whole tooling structure is simple and compact, and the manufacturing cost is low. By using this structural tooling, the torque converter housing of the excavator loader can be processed with high precision and reliable in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the main structure of the torque converter housing processing fixture for an excavator loader when it is in use.

[0012] Figure 2 The utility model is a schematic diagram of the top view of the structure of the torque converter housing processing fixture of the excavator loader when it is in use.

[0013] Figure numerals: clamp body 1, positioning spindle 2, stud 3, nut 4, support stud 5, inner pressure plate 6, screw ①7, step nut 8, outer pressure plate 9, pad ①10, pad ②11, screw ②12, outer stud 13, positioning stud 14, torque converter housing 15. DETAILED DESCRIPTION

[0014] The specific implementation of the processing fixture for the torque converter housing of an excavator loader of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1-Figure 2 As shown,

[0016] When in use, the stopper end of the torque converter housing 15 is facing upward, the middle hole of the torque converter housing 15 is aligned with the positioning mandrel 2, and the right side of the left ear seat of the torque converter housing 15 is against the positioning stud 14, and then the torque converter housing 15 is pressed down horizontally so that the three pads support the torque converter housing 15; the two bosses of the inner pressure plate 6 are respectively aligned with the pad ①10 and the pad ②11 and fixed with the step nut 8, and the two bosses of the outer pressure plate 9 are respectively aligned with the pad ①10 and the support stud 5 and fixed with the step nut 8. At this time, the outer circle of the stopper connecting the torque converter housing 15 with the engine can be processed, and good conditions are created for the subsequent processing and positioning of the torque converter housing 15.

Claims

1. A machining fixture for a torque converter housing of an excavator loader, characterized by: The invention comprises a clamp body (1), a positioning mandrel (2), a stud (3), a nut (4), a supporting stud (5), an inner pressure plate (6), a screw ① (7), a step nut (8), an outer pressure plate (9), a cushion block ① (10), a cushion block ② (11), a screw ② (12), an outer stud (13) and a positioning stud (14); the positioning mandrel (2) is fixed to the upper end of the clamp body (1) by four screws ① (7), two cushion blocks ① (10) and one cushion block ② (11) are each fixed by A screw ② (12) is fixed on the upper end of the clamp body (1); the stud (3) is screwed into the threaded hole of the positioning spindle (2) and fixed with a nut (4); the support stud (5), the outer stud (13), and the positioning stud (14) are screwed into the threaded hole of the clamp body (1) and fixed with a nut (4); the inner pressure plate (6) is inserted into the stud (3) through the U-shaped groove and fixed with a step nut (8); the outer pressure plate (9) is inserted into the outer stud (13) through the U-shaped groove and fixed with a step nut (8).

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