An automobile part positioning tool

Abstract

The utility model discloses a kind of automobile parts positioning tool, it is related to automobile parts processing technical field, including tool table, the tool table upper end array is equipped with several positioning rotary lever, the positioning rotary lever one end is fixed with rotating shaft, the rotating shaft one end is fixed with outer spline shaft, the outer spline shaft is all sleeved with inner spline shaft, the tool table bottom end is equipped with driving mechanism, the tool table bottom end is equipped with supporting mechanism, the utility model is hinged by being set with several positioning rotary lever in tool table upper end, and by gear ring simultaneously drive several inner spline shafts to rotate, and then it is convenient to position and fix automobile parts, while by setting supporting mechanism, in the process that positioning rotary lever is positioned and clamped automobile parts, support column end ball can reduce scratch to automobile parts bottom end.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically an automotive parts positioning fixture. Background Technology

[0002] The widespread use of automobiles has brought immense convenience to human travel. As people's demands for vehicle performance, safety, and comfort continue to rise, the automotive manufacturing industry is constantly developing towards higher precision and higher quality. In this process, the processing quality of automotive parts directly affects the reliability and performance of the entire vehicle. Therefore, accurate fixing and processing often require the use of positioning fixtures during manufacturing. Various parts, especially complex ring-shaped and disc-shaped parts, require specialized positioning equipment to ensure they are in the correct processing position during turning, grinding, and drilling processes. While the currently widely used external clamping positioning method can achieve basic fixing, it still suffers from insufficient positioning rigidity, susceptibility to deformation, or accumulation of positioning errors when dealing with irregularly shaped parts, thin-walled parts, or parts with high surface quality requirements. This restricts further improvements in processing accuracy and efficiency.

[0003] In existing automotive parts clamping and positioning processes, fixture structures with clamping plates are commonly used to fix the parts. In practice, to adjust the automotive parts to the center position between the clamping components, the workpiece often needs to be pushed horizontally across the machining platform. This sliding process easily causes friction between the bottom or side surfaces of the parts and the platform or fixture, resulting in scratches, dents, or plating damage, severely affecting the appearance quality and corrosion resistance of the parts. Especially for decorative parts or precision functional components with high surface finish requirements, such damage not only increases rework costs but may also affect assembly results and product yield.

[0004] Based on this, a positioning fixture for automotive parts is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for automotive parts to solve the problem of inconvenience in protecting automotive parts during positioning in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A positioning fixture for automotive parts includes a fixture table. A base frame is fixedly mounted on the bottom of the fixture table. A plurality of positioning rotating rods are arrayed on the upper end of the fixture table. Each positioning rotating rod has a rotating shaft fixedly mounted at one end. Each rotating shaft is rotatably mounted in a mounting hole on the upper end of the fixture table. An external spline shaft is fixedly mounted at one end of each rotating shaft. An internal spline shaft is sleeved on each external spline shaft. A drive mechanism for driving the plurality of positioning rotating rods to rotate simultaneously is provided at the bottom of the fixture table. A plurality of through holes are provided at the upper middle part of the fixture table. A support mechanism for supporting the automotive parts is provided at the bottom of the fixture table and at the through holes.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the support mechanism includes a mounting ring, with support columns at the upper end of the mounting ring and the through hole in the middle of the tooling table, and ball bearings at the ends of the support columns. The mounting ring is fixedly mounted on the output end of the electric cylinder, the electric cylinder is fixedly mounted on the bottom of the fixed box, and the fixed box is fixedly mounted on the bottom of the tooling table.

[0010] In one alternative embodiment: the driving mechanism includes driven gears, each of the inner spline shafts is fixedly provided with a driven gear at one end, a plurality of driven gears mesh with a gear ring, a fixed ring is fixedly provided at the upper end of the gear ring, a support ring is slidably provided inside the fixed ring, the support ring is fixedly provided at the bottom end of the tooling table, a driving gear is meshed on the gear ring, the driving gear is fixedly provided at the output end of the motor, and the motor is fixedly provided at the bottom end of the tooling table.

[0011] In one alternative: each of the internal spline shafts is rotatably provided with a threaded rod at its bottom end, and a fixing bracket is provided at the threaded section of the threaded rod. The fixing bracket is provided with a threaded hole at the connection between the threaded rod and the fixing bracket, and the fixing bracket is fixedly provided at the bottom end of the tooling table.

[0012] In one alternative: each of the external spline shafts is fixedly provided with a fixing plate, a torsion spring is provided between the upper end of the fixing plate and the bottom end of the tooling table, and a positioning pin is provided between the upper end of the tooling table and the end of the positioning rod, and the positioning pin is set at the initial position of the positioning rod.

[0013] In one alternative: each end of the positioning rod is rotatably equipped with a roller.

[0014] In one alternative: a sleeve is sleeved at the end of the positioning rod, the sleeve is fixedly connected to the positioning rod by screws, and limit pins are symmetrically provided at the end of the sleeve, with clamping plates hinged between the limit pins.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention facilitates the positioning and fixing of automotive parts by hinged installation of several positioning rods on the upper end of the tooling table and simultaneous rotation of several internal spline shafts via a gear ring. Furthermore, a support mechanism is incorporated to reduce scratches on the bottom of the automotive parts during the positioning and clamping process. The external spline shaft engages with the internal spline shaft, and a threaded rod is provided at the end of the internal spline shaft, allowing selection of the appropriate positioning rod for operation. This enables the positioning and clamping of various types of automotive parts, thereby increasing the practicality of the automotive parts positioning tooling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the bottom structure of the tooling table of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation of the electric cylinder of this utility model.

[0020] Figure 4 This is a schematic diagram of the installation of the torsion spring of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation of the sleeve pipe of this utility model.

[0022] Figure 6 This is a schematic diagram of the installation of the clamping plate of this utility model.

[0023] Figure reference numerals: 11 Tooling table, 12 Base frame, 13 Positioning rod, 14 Positioning pin, 15 Roller, 16 External splined shaft, 17 Internal splined shaft, 18 Torsion spring, 19 Threaded rod, 20 Fixed bracket, 21 Driven gear, 22 Gear ring, 23 Support ring, 24 Drive gear, 25 Motor, 26 Mounting ring, 27 Support column, 28 Electric cylinder, 29 Fixed box, 30 Sleeve connecting pipe, 31 Clamping plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] In one embodiment, such as Figures 1-6As shown, a positioning fixture for automotive parts includes a fixture table 11. A base frame 12 is fixedly mounted on the bottom of the fixture table 11. A plurality of positioning rotating rods 13 are arrayed on the upper end of the fixture table 11. Each positioning rotating rod 13 has a rotating shaft fixedly mounted at one end. The rotating shafts are rotatably mounted in mounting holes on the upper end of the fixture table 11. An external spline shaft 16 is fixedly mounted at one end of each rotating shaft. An internal spline shaft 17 is sleeved on each external spline shaft 16. A drive mechanism for driving the plurality of positioning rotating rods 13 to rotate simultaneously is provided at the bottom end of the fixture table 11. A plurality of through holes are provided at the upper middle part of the fixture table 11. A support mechanism for supporting automotive parts is provided at the bottom end of the fixture table 11 and at the through holes. The support mechanism facilitates the support of automotive parts and facilitates the movement of automotive parts during positioning. The drive mechanism facilitates the rotation of the plurality of positioning rotating rods 13 to position the automotive parts.

[0027] The support mechanism includes a mounting ring 26. Support columns 27 are provided at both the upper end of the mounting ring 26 and the through hole in the middle of the tooling table 11. Each support column 27 has a ball bearing at its end. The mounting ring 26 is fixedly mounted on the output end of an electric cylinder 28, which is fixedly mounted inside the bottom of a fixed box 29. The fixed box 29 is fixedly mounted on the bottom of the tooling table 11. In use, when positioning and clamping automotive parts is required, the output end of the electric cylinder 28 drives the mounting ring 26 to move. The mounting ring 26 then drives several support columns 27 to move, causing the ends of the support columns 27 to be higher than the upper end of the tooling table 11, ensuring that the bottom end of the automotive part is in close contact with the ball bearings at the ends of the support columns 27.

[0028] The drive mechanism includes driven gears 21. Each end of the internal spline shaft 17 is fixedly provided with a driven gear 21. Several driven gears 21 mesh with a gear ring 22. A fixed ring is fixedly provided at the upper end of the gear ring 22, and a support ring 23 slides within the fixed ring. The support ring 23 is fixedly located at the bottom end of the tooling table 11. A driving gear 24 meshes with the gear ring 22. The driving gear 24 is fixedly located at the output end of a motor 25. The motor 25 is fixedly located at the bottom end of the tooling table 11. In use, when it is necessary to perform machining on automotive parts... During positioning and clamping, the motor 25 is started by the external control component. The output end of the motor 25 drives the drive gear 24 to rotate. The drive gear 24 meshes with the gear ring 22 and drives the gear ring 22 to rotate. The gear ring 22 meshes with several driven gears 21 and rotates, so that the driven gears 21 drive several internal spline shafts 17 to rotate. The internal spline shafts 17 cooperate with the external spline shafts 16 to drive the positioning rod 13 to rotate at a fixed angle, so that the end of the positioning rod 13 is in close contact with the automotive parts, thereby positioning and clamping the automotive parts.

[0029] Each of the inner spline shafts 17 has a threaded rod 19 rotatably mounted at its bottom end. A fixing bracket 20 is fitted at the threaded section of the threaded rod 19. The fixing bracket 20 and the threaded rod 19 are connected by a threaded hole. The fixing bracket 20 is fixedly mounted at the bottom end of the tooling table 11. In use, when only a few of the positioning rods 13 are needed for clamping and positioning, the threaded rod 19 at the end of the positioning rod 13 that does not need to work is rotated. Under the action of the thread, the threaded rod 19 pushes the inner spline shaft 17 to slide on the outer spline shaft 16. The inner spline shaft 17 drives the driven gear 21 to move, causing the driven gear 21 to separate from the gear ring 22. This prevents the positioning rod 13 that does not need to work from rotating when the gear ring 22 rotates.

[0030] Each end of the external spline shaft 16 is fixedly provided with a fixing plate. A torsion spring 18 is provided between the upper end of the fixing plate and the bottom end of the tooling table 11. A positioning pin 14 is provided between the upper end of the tooling table 11 and the end of the positioning rotating rod 13. The positioning pin 14 is set at the initial position of the positioning rotating rod 13. In use, when the driven gear 21 separates from the gear ring 22, the positioning rotating rod 13 is fixed in a fixed position under the action of the torsion spring 18 and the positioning pin 14, so that the driven gear 21 can mesh with the gear ring 22 at any time.

[0031] Each end of the positioning rod 13 is equipped with a roller 15, which helps to reduce friction between one end of the positioning rod 13 and the automotive parts during use.

[0032] Example 2

[0033] The difference from Embodiment 1 is that: a sleeve 30 is sleeved at the end of the positioning rotating rod 13, and the sleeve 30 is fixedly connected to the positioning rotating rod 13 by screws. The end of the sleeve 30 is symmetrically provided with limiting pins, and a clamping plate 31 is hinged between the limiting pins. In use, when it is necessary to position and clamp different types of automotive parts, the sleeve 30 is sleeved on one end of the positioning rotating rod 13 and fixed with screws. Then, the automotive parts can be positioned and clamped by the clamping plate 31.

[0034] The above embodiment discloses a positioning fixture for automotive parts. When positioning and clamping automotive parts, the output end of the electric cylinder 28 drives the mounting ring 26 to move. The mounting ring 26 drives several support columns 27 to move, so that the height of the end of the support column 27 is higher than the upper end of the fixture table 11, and the bottom end of the automotive part is in close contact with the ball bearings at the end of the support column 27. Then, the electric motor 25 is started by the external control component. The output end of the electric motor 25 drives the drive gear 24 to rotate. The drive gear 24 meshes with the gear ring 22 and drives the gear ring 22 to rotate. The gear ring 22 meshes with several driven gears 21 and rotates, so that the driven gears 21 drive several internal spline shafts 17 to rotate. The internal spline shafts 17 cooperate with the external spline shafts 16 to drive the positioning rod 13 to rotate at a fixed angle, so that the end of the positioning rod 13 is in close contact with the automotive part, thereby positioning and clamping the automotive part. When the automotive part is being processed, the output end of the electric cylinder 28 drives the mounting ring 26 back to the initial position, so that the automotive part is located on the upper end of the fixture table 11.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A positioning fixture for automotive parts, comprising a fixture table (11), wherein a base frame (12) is fixedly provided at the bottom end of the fixture table (11), characterized in that, The upper end of the tooling table (11) is provided with a number of positioning rotating rods (13). One end of each positioning rotating rod (13) is fixed with a rotating shaft. Each rotating shaft is rotatably installed in the mounting hole at the upper end of the tooling table (11). One end of each rotating shaft is fixed with an external spline shaft (16). An internal spline shaft (17) is sleeved on each external spline shaft (16). The bottom end of the tooling table (11) is provided with a drive mechanism for driving the number of positioning rotating rods (13) to rotate simultaneously. The upper end of the middle part of the tooling table (11) is provided with a number of through holes. The bottom end of the tooling table (11) and the through holes are provided with a support mechanism for supporting automotive parts. The support mechanism includes a mounting ring (26), and a support column (27) is provided at the upper end of the mounting ring (26) and the middle through hole of the tooling table (11). The end of the support column (27) is provided with a ball. The mounting ring (26) is fixedly installed at the output end of the electric cylinder (28). The electric cylinder (28) is fixedly installed at the bottom of the fixed box (29). The fixed box (29) is fixedly installed at the bottom of the tooling table (11). The drive mechanism includes a driven gear (21). One end of the internal spline shaft (17) is fixedly provided with a driven gear (21). Several driven gears (21) mesh with a gear ring (22). A fixed ring is fixedly provided at the upper end of the gear ring (22). A support ring (23) is slidably provided inside the fixed ring. The support ring (23) is fixedly provided at the bottom end of the tooling table (11). A drive gear (24) meshes on the gear ring (22). The drive gear (24) is fixedly provided at the output end of the motor (25). The motor (25) is fixedly provided at the bottom end of the tooling table (11).

2. The automotive component positioning fixture according to claim 1, characterized in that, The bottom end of each internal spline shaft (17) is provided with a threaded rod (19), and a fixing bracket (20) is provided at the threaded section of the threaded rod (19). The fixing bracket (20) and the threaded rod (19) are provided with threaded holes, and the fixing bracket (20) is fixedly installed at the bottom end of the tooling table (11).

3. The automotive component positioning fixture according to claim 2, characterized in that, The ends of the external spline shaft (16) are all fixed with a fixed plate. A torsion spring (18) is provided between the upper end of the fixed plate and the bottom end of the tooling table (11). A positioning pin (14) is provided between the upper end of the tooling table (11) and the end of the positioning rod (13). The positioning pin (14) is set at the initial position of the positioning rod (13).

4. The automotive component positioning fixture according to claim 1, characterized in that, The positioning rod (13) is equipped with rollers (15) at its end.

5. The automotive component positioning fixture according to claim 1, characterized in that, The end of the positioning rotating rod (13) is fitted with a sleeve (30), which is fixedly connected to the positioning rotating rod (13) by screws. The end of the sleeve (30) is symmetrically provided with limiting pins, and a clamping plate (31) is hinged between the limiting pins.

Images