Constant velocity universal joint driving shaft assembly compression length measuring tool

Abstract

The utility model discloses a constant velocity universal joint driving shaft assembly compression length measuring tool comprising a machine table, sliding rods are horizontally and symmetrically arranged on the machine table, a screw rod is arranged between the two sliding rods, one end of the screw rod is provided with a hand wheel, a nut seat of the screw rod is provided with a pressing seat which is slidably connected to the two sliding rods, and the pressing seat is provided with a clamping groove. An air cylinder is arranged at the top end of the pressing seat, a movable pressing plate is arranged at the telescopic end of the air cylinder, and a fixed pressing plate matched with the movable pressing plate is arranged on the machine table. According to the utility model, assistance can be provided when the compression length of the driving shaft assembly is measured, the physical output of an operator is reduced, the compression is ensured to be in place, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a compression length measuring tool for a constant velocity universal joint drive shaft assembly. Background Art

[0002] The drive shaft assembly of a car's constant velocity joint (often called a constant velocity ball cage or constant velocity joint) consists of two constant velocity joints, a drive shaft, and a sleeve connecting them. The constant velocity joint can be elastically compressed and stretched within a certain range to adapt to the changes in the length of the shaft assembly that may occur during vehicle suspension and steering movements.

[0003] During the production process of the constant velocity joint drive shaft assembly, it is necessary to measure the shortest compressed length thereof. The existing compression length measuring tooling generally uses a hand-cranked screw to drive the clamping plate to move and clamp the drive shaft assembly. When the drive shaft assembly is compressed to near the limit, the clamping plate is subjected to greater resistance, which consumes a lot of physical strength of the operator and is prone to inadequate compression, resulting in measurement errors. Utility Model Content

[0004] The purpose of the utility model is to provide a constant velocity universal joint drive shaft assembly compression length measuring tool, which can provide assistance when measuring the compression length of the drive shaft assembly, reduce the physical consumption of the operator, ensure that the compression is in place, and improve the accuracy of the measurement.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a constant velocity universal joint drive shaft assembly compression length measuring tool, including a machine platform, horizontally symmetrical sliding rods are arranged on the machine platform, a screw rod is arranged between the two sliding rods, a handwheel is arranged at one end of the screw rod, a pressure seat slidably connected to the two sliding rods is arranged on the nut seat of the screw rod, a cylinder is arranged on the top of the pressure seat, a dynamic pressure plate is arranged on the telescopic end of the cylinder, and a fixed pressure plate matching the dynamic pressure plate is arranged on the machine platform.

[0006] A further improvement of the utility model is that at least one placement seat is slidably connected between the dynamic pressure plate and the fixed pressure plate and located on the sliding rod, and a support block is provided at the upper end of the placement seat, and a V-shaped opening matching the drive shaft of the drive shaft assembly is provided at the upper end of the support block.

[0007] A further improvement of the utility model is that the support blocks are also provided on the opposite sides of the movable clamping plate and the fixed clamping plate, and the V-shaped openings of all the support blocks are arranged along a straight line.

[0008] A further improvement of the present invention is that the telescopic direction of the cylinder is consistent with the length direction of the slide rod.

[0009] A further improvement of the utility model is that a switch for controlling the cylinder is provided on one side of the hand wheel.

[0010] A further improvement of the utility model is that a scale is provided on one side of the machine along the length direction of the screw rod, and the starting end of the scale is flush with the pressing surface of the fixed pressure plate.

[0011] A further improvement of the utility model is that a pointer is provided on one side of the pressure surface of the dynamic pressure plate, and the needle of the pointer is located above the scale.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can provide assistance when measuring the compression length of the drive shaft assembly through the cooperation of the screw rod and the cylinder. When the drive shaft assembly is compressed to near the limit, the cylinder is used to press it, thereby reducing the physical consumption of the operator, ensuring that the compression is in place, and improving the accuracy of the measurement.

[0014] The utility model can provide greater flexibility in adjustment through manual preliminary adjustment of the screw rod. The operator can manually pre-adjust the position and then make final fine adjustment through the cylinder, thereby reducing the limitation caused by the cylinder stroke and improving the scope of application.

[0015] Although direct full-course compression by the cylinder can overcome the problem of inadequate compression caused by manual compression, it may lead to instability of the drive shaft assembly in some cases, especially when the compression force is high. The utility model can ensure stable compression in the last short distance through manual control by using the manual preliminary adjustment of the screw rod, which helps to improve the stability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic top view of the structure of the utility model.

[0017] In the figure, 1-machine table, 2-slide rod, 3-screw rod, 4-hand wheel, 5-pressure seat, 6-cylinder, 7-movable pressure plate, 8-fixed pressure plate, 9-placing seat, 10-support block, 11-V-shaped mouth, 12-switch, 13-scale, 14-pointer. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1: Combination Figure 1It can be seen that a tool for measuring the compression length of a constant velocity universal joint drive shaft assembly includes a machine table 1, on which slide bars 2 are horizontally symmetrically arranged, a screw rod 3 is arranged between two slide bars 2, a hand wheel 4 is arranged at one end of the screw rod 3, a pressure seat 5 slidably connected to the two slide bars 2 is arranged on the nut seat of the screw rod 3, a cylinder 6 is arranged at the top of the pressure seat 5, a dynamic pressure plate 7 is arranged on the telescopic end of the cylinder 6, and a fixed pressure plate 8 matched with the dynamic pressure plate 7 is arranged on the machine table 1. The screw rod 3 and the slide bar 2 are arranged in parallel.

[0020] At least one placement seat 9 is slidably connected between the dynamic pressure plate 7 and the fixed pressure plate 8 and on the slide bar 2, and a support block 10 is provided at the upper end of the placement seat 9, and a V-shaped opening 11 matching the drive shaft of the drive shaft assembly is provided at the upper end of the support block 10. Preferably, two placement seats 9 are provided, and the drive shaft assembly can be placed on the support block 10 first during measurement, and the V-shaped opening 11 is used to limit the drive shaft, and the V-shaped opening can be suitable for drive shafts of drive shaft assemblies with different diameters.

[0021] Preferably, a support block 10 is also provided on the opposite side of the dynamic pressure plate 7 and the fixed pressure plate 8, and the V-shaped openings 11 of all the support blocks 10 are arranged along a straight line to ensure that the placed drive shaft assembly is in a horizontal state.

[0022] The telescopic direction of the cylinder 6 is consistent with the length direction of the slide bar 2. A switch 12 for controlling the cylinder 6 is provided on one side of the hand wheel 4.

[0023] A scale 13 is provided on one side of the machine platform 1 along the length direction of the screw rod 3 , and the starting end of the scale 13 is flush with the pressing surface of the fixed pressing plate 8 .

[0024] A pointer 14 is provided on one side of the pressing surface of the movable pressure plate 7, and the needle of the pointer 14 is located above the scale 13. The length of the compressed drive shaft assembly can be obtained by looking down at the scale pointed by the needle.

[0025] The working principle of the compression length measuring tool for the constant velocity universal joint drive shaft assembly provided by the utility model is as follows: during measurement, the drive shaft assembly is placed on the support block 10 of the placement seat 9, the position of the pressure seat 5 is manually adjusted by the screw rod 3, the distance between the dynamic pressure plate 7 and the fixed pressure plate 8 is reduced to initially compress the drive shaft assembly, and then the cylinder 6 is used to perform the final distance compression to reduce physical energy consumption. After compression, the length of the compressed drive shaft assembly can be obtained by looking down and observing the scale pointed to by the needle of the pointer 14.

[0026] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the utility model specification and the accompanying drawings, or directly or indirectly used in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A tool for measuring the compression length of a constant velocity universal joint drive shaft assembly, characterized in that: The invention comprises a machine platform (1), wherein sliding rods (2) are horizontally symmetrically arranged on the machine platform (1), a screw rod (3) is arranged between two sliding rods (2), a hand wheel (4) is arranged at one end of the screw rod (3), a pressure seat (5) slidably connected to the two sliding rods (2) is arranged on the nut seat of the screw rod (3), a cylinder (6) is arranged at the top end of the pressure seat (5), a dynamic pressure plate (7) is arranged on the telescopic end of the cylinder (6), and a fixed pressure plate (8) matched with the dynamic pressure plate (7) is arranged on the machine platform (1).

2. The constant velocity universal joint drive shaft assembly compression length measuring tool according to claim 1, characterized in that: At least one placement seat (9) is slidably connected between the dynamic pressure plate (7) and the fixed pressure plate (8) and located on the slide rod (2); a support block (10) is provided at the upper end of the placement seat (9); and a V-shaped opening (11) is provided at the upper end of the support block (10) that matches the drive shaft of the drive shaft assembly.

3. The constant velocity joint drive shaft assembly compression length measuring tool according to claim 2, characterized in that: The support blocks (10) are also provided on the surfaces opposite to the dynamic pressure plate (7) and the fixed pressure plate (8), and the V-shaped openings (11) of all the support blocks (10) are arranged along a straight line.

4. The constant velocity joint drive shaft assembly compression length measuring tool according to claim 1, characterized in that: The telescopic direction of the cylinder (6) is consistent with the length direction of the sliding rod (2).

5. The constant velocity joint drive shaft assembly compression length measuring tool according to claim 1, characterized in that: A switch (12) for controlling the cylinder (6) is provided on one side of the hand wheel (4).

6. The constant velocity universal joint drive shaft assembly compression length measuring tool according to claim 1, characterized in that: A scale (13) is provided on one side of the machine platform (1) along the length direction of the screw rod (3), and the starting end of the scale (13) is flush with the pressing surface of the fixed pressure plate (8).

7. The constant velocity universal joint drive shaft assembly compression length measuring tool according to claim 6, characterized in that: A pointer (14) is provided on one side of the pressure surface of the dynamic pressure plate (7), and the needle tip of the pointer (14) is located above the scale (13).

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