Fixing tool for automobile half shaft machining

Abstract

The utility model belongs to the technical field of half shaft clamps, and particularly relates to a fixing tool for automobile half shaft machining, which comprises a fixing support and a plurality of telescopic rods, the output ends of the telescopic rods are fixedly connected with limiting clamping plates, the limiting clamping plates are connected to the inner wall of the fixing support in a sliding manner, a station clamping groove is formed in the top end of the fixing support, and the telescopic rods are arranged in the station clamping groove. A transparent protective cover is fixedly connected to the top end of the fixed support, a guide pipe is fixedly connected to the inner wall of the transparent protective cover, and a shielding rod is slidably connected to the inner wall of the station clamping groove. The space of the guide pipe and the station clamping groove is shielded through the combination of the shielding rod and the transparent protective cover, external dirt and dust and chippings are prevented from entering the space, dirt residues are reduced, and the situation that the chippings enter key parts such as the positioning face and the clamping face of the limiting clamping plate, and the matching precision between the limiting clamping plate and a workpiece is changed is prevented. And the situation that friction is increased, and the service life of the tool is shortened is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of half-shaft clamping technology, specifically relating to a fixing fixture for machining automobile half-shafts. Background Technology

[0002] A half-shaft, also called a drive shaft, is the shaft that connects the differential to the drive wheels. It transmits torque between the gearbox reducer and the drive wheels. Each half-shaft has a universal joint at its inner and outer ends, which connect to the reducer gears and the inner ring of the wheel hub bearings via splines. When machining a half-shaft, a fixture is needed to clamp and secure it, preventing wobbling and improving product quality. However, machining a half-shaft generates a large amount of debris. Existing fixtures use clamping to hold the half-shaft in place. When debris accumulates at the fixture's location, it may enter critical areas such as the fixture's positioning and clamping surfaces, altering the fit accuracy between the fixture and the workpiece, increasing friction between fixture components and between the fixture and the workpiece, and reducing the fixture's lifespan. Utility Model Content

[0003] This utility model provides a fixed fixture for machining automotive half shafts, which has the feature of solving the influence of debris on the fixed fixture and half shaft machining.

[0004] This utility model provides the following technical solution: it includes a fixed support and several telescopic rods, each of which has a limiting clamp fixedly connected to its output end. The limiting clamp is slidably connected to the inner wall of the fixed support. A workstation slot is provided at the top of the fixed support. A transparent protective cover is fixedly connected to the top of the fixed support. A guide tube is fixedly connected to the inner wall of the transparent protective cover. The guide tube corresponds to the inner diameter of the workstation slot. A blocking rod is slidably connected to the inner wall of the workstation slot. The blocking rod is slidably connected to the inner wall of the guide tube.

[0005] In this configuration, several of the limiting clamps are fixedly connected to an anti-slip layer at opposite ends, and the anti-slip layer does not contact the blocking rod.

[0006] The bottom end of the shielding rod is provided with a clearance groove, and a reset spring is fixedly connected to the inner wall of the clearance groove. The reset spring is fixedly connected to the inner wall of the workstation slot.

[0007] The bottom end of the shielding rod is provided with a slot, and a guide rod is fixedly connected to the inner wall of the workstation slot. The guide rod is slidably connected to the inner wall of the slot.

[0008] The guide rod has a groove at its top end, and a pressure switch is installed on the inner wall of the groove. The blocking rod is in contact with the pressure switch.

[0009] The fixed support sidewall is rotatably connected to a rotating ring, and two scraper rods are fixedly connected to the top of the rotating ring. Both scraper rods are slidably connected to the sidewall of the transparent protective cover.

[0010] The rotating ring has several spherical rolling elements at both ends, and the spherical rolling elements are slidably connected to the inner wall of the fixed support. A motor corresponding to the position of the rotating ring is installed on the fixed support, and a gear is installed at the output end of the motor. The gear is meshed with the inner wall of the rotating ring.

[0011] The beneficial effects of this utility model are: by combining the shielding rod with the transparent protective cover, the guide tube and the workstation slot space are shielded, preventing external dirt and debris from entering the interior, reducing dirt residue, and preventing debris from entering the positioning surface, clamping surface and other key parts of the limiting clamping plate, thus changing the fit accuracy between the limiting clamping plate and the workpiece. It also prevents increased friction and reduced tooling service life.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a frontal cross-sectional view of the present invention.

[0015] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;

[0016] Figure 4 for Figure 2 Enlarged diagram of section B;

[0017] Figure 5 This is a top view cross-sectional structural diagram of the present invention.

[0018] In the diagram: 1. Fixed support; 11. Station slot; 12. Guide rod; 121. Groove; 13. Touch switch; 2. Telescopic rod; 21. Limiting clamp; 22. Anti-slip layer; 3. Transparent protective cover; 31. Guide tube; 4. Blocking rod; 41. Clearance groove; 42. Return spring; 43. Slot; 5. Rotating ring; 51. Scraper; 52. Spherical rolling element; 53. Motor; 54. Gear. Detailed Implementation

[0019] Please see Figures 1-5The present invention provides the following technical solution: including a fixed support 1 and several telescopic rods 2, the output ends of the several telescopic rods 2 are fixedly connected to a limiting clamp 21, the limiting clamp 21 is slidably connected to the inner wall of the fixed support 1, the top of the fixed support 1 is provided with a workstation slot 11, the top of the fixed support 1 is fixedly connected to a transparent protective cover 3, the inner wall of the transparent protective cover 3 is fixedly connected to a guide tube 31, the guide tube 31 and the inner diameter of the workstation slot 11 are correspondingly positioned, the inner wall of the workstation slot 11 is slidably connected to a blocking rod 4, the blocking rod 4 is slidably connected to the inner wall of the guide tube 31.

[0020] In this implementation scheme: the fixed support 1 supports all components of the device. The fixed support 1 accommodates the half shaft through the station slot 11. The half shaft is inserted into the station slot 11, and the fixed support 1 uses several telescopic rods 2 to clamp the half shaft in a ring, so that the half shaft can be stably fixed inside the station slot 11. This ensures that the half shaft can maintain a stable state during subsequent processing and prevents the half shaft from shaking. The transparent protective cover 3 covers the exposed part of the top of the fixed support 1, so that debris cannot reach the station slot 11. Positioned, the transparent protective cover 3 supports the guide tube 31. The guide tube 31 has the same inner diameter as the workstation slot 11, allowing the half-shaft to pass through the guide tube 31 and enter the workstation slot 11. The guide tube 31 guides the half-shaft, enabling it to be positioned. As the half-shaft is inserted deeper, its support is inserted into the workstation slot 11. After the half-shaft is installed, the fixed support 1 and the guide tube 31 can simultaneously support the half-shaft, further improving the stability of the half-shaft support and positioning. The shielding rod 4 is located in the workstation slot 11. Inside, the blocking rod 4 can be adjusted between the workstation slot 11 and the guide tube 31. When the half-shaft is not inserted into the device, the fixture is in standby mode. At this time, the blocking rod 4 slides into the guide tube 31. The end of the blocking rod 4 slides until it is flush with the end of the transparent protective cover 3 and then stops sliding. The blocking rod 4 and the transparent protective cover 3 together block the space between the guide tube 31 and the workstation slot 11, preventing external dust and debris from entering the interior, reducing dirt residue, and preventing debris from entering the positioning surface, clamping surface, and other critical parts of the limiting clamp 21. In order to prevent the situation where the fit accuracy between the limiting clamp 21 and the workpiece changes, and to prevent the increase of friction and the reduction of the tooling service life, when the half shaft is installed in the tooling, the half shaft squeezes the blocking rod 4, and the blocking rod 4 slides towards the depth of the workstation slot 11, so that the half shaft can enter the guide tube 31. Then the half shaft continues to push the blocking rod 4, and the blocking rod 4 is limited by the fixed support 1 and cannot slide. At this time, the half shaft reaches between several limiting clamps 21, and the telescopic rod 2 pushes the limiting clamps 21 to clamp and fix the half shaft.

[0021] Several limiting clamps 21 are fixedly connected to anti-slip layers 22 at opposite ends. The anti-slip layers 22 do not contact the blocking rod 4. The limiting clamps 21 support and drive the anti-slip layers 22. The limiting clamps 21 contact the half shaft through the anti-slip layers 22. When the telescopic rod 2 pushes the limiting clamps 21, the limiting clamps 21 and the anti-slip layers 22 clamp and fix the half shaft. The anti-slip layers 22 increase the friction between the limiting clamps 21 and the half shaft, thereby increasing the limiting stability of the limiting clamps 21 when clamping the half shaft.

[0022] The bottom end of the shielding rod 4 is provided with a clearance groove 41, and a return spring 42 is fixedly connected to the inner wall of the clearance groove 41. The return spring 42 is fixedly connected to the inner wall of the workstation slot 11. The shielding rod 4 makes way for the return spring 42 through the clearance groove 41, so that the shielding rod 4 can descend to the bottom position of the workstation slot 11. The return spring 42 pushes the shielding rod 4 upward, so that the return spring 42 can extend to the opening position of the guide tube 31 as the half shaft is pulled out, thereby enabling the shielding rod 4 to automatically cooperate with the transparent protective cover 3 to complete the shielding and protection work of the opening.

[0023] The bottom end of the blocking rod 4 is provided with a slot 43, and a guide rod 12 is fixedly connected to the inner wall of the workstation slot 11. The guide rod 12 is slidably connected to the inner wall of the slot 43. The blocking rod 4 makes way for the guide rod 12 through the slot 43. When the blocking rod 4 slides in the workstation slot 11 and the guide tube 31, the guide rod 12 slides and guides the blocking rod 4, so that the blocking rod 4 can slide along a straight line, preventing the blocking rod 4 from moving off course or tilting.

[0024] A groove 121 is provided at the top of the guide rod 12, and a pressure switch 13 is installed on the inner wall of the groove 121. The blocking rod 4 contacts the pressure switch 13. The groove 121 accommodates and makes way for the pressure switch 13, so that the pressure switch 13 does not block the contact between the blocking rod 4 and the top of the guide rod 12. The blocking rod 4 squeezes the pressure switch 13, so that the pressure switch 13 can be triggered. The pressure switch 13 transmits a control signal to the telescopic rod 2, so that the telescopic rod 2 can start the clamping and fixing work of the half shaft.

[0025] A rotating ring 5 is rotatably connected to the side wall of the fixed support 1. Two scraper rods 51 are fixedly connected to the top of the rotating ring 5. Both scraper rods 51 are slidably connected to the side wall of the transparent protective cover 3. The rotating ring 5 is limited in the annular groove of the side wall of the fixed support 1. The rotating ring 5 supports the two scraper rods 51. When the scraper rods 51 rotate, they can scrape and clean the side wall of the transparent protective cover 3, thereby keeping the transparent protective cover 3 clean and making it easy to observe the inside of the transparent protective cover 3.

[0026] Both ends of the rotating ring 5 are provided with several spherical rolling elements 52, which are slidably connected to the inner wall of the fixed support 1. The fixed support 1 is equipped with a motor 53 corresponding to the position of the rotating ring 5. A gear 54 is installed at the output end of the motor 53, and the gear 54 is meshed with the inner wall of the rotating ring 5. The motor 53 drives the gear 54 to rotate, and when the gear 54 rotates, it drives the rotating ring 5 to rotate synchronously, thereby enabling the rotating ring 5 to drive the two scraper rods 51 to scrape and clean the transparent protective cover 3. When the rotating ring 5 rotates, it drives the several spherical rolling elements 52 to rotate. The spherical rolling elements 52 reduce the frictional resistance between the rotating ring 5 and the fixed support 1, which facilitates the rotation of the rotating ring 5.

[0027] The working principle and usage process of this utility model are as follows: When the device is in use, the half-shaft presses against the blocking rod 4, causing the blocking rod 4 to slide deeper into the workstation slot 11, allowing the half-shaft to enter the guide tube 31. Subsequently, the half-shaft continues to push the blocking rod 4, which is then limited by the fixed support 1 and cannot slide. The blocking rod 4 presses against the touch switch 13, triggering the touch switch 13. The touch switch 13 transmits a control signal to the telescopic rod 2, enabling the telescopic rod 2 to open and clamp the half-shaft. After the half-shaft is processed, the telescopic rod 2 is controlled to shorten. The lock limits and fixes the half shaft, then the return spring 42 pushes the half shaft, the half shaft is discharged from the device, and at the same time the end of the shielding rod 4 slides to be flush with the end of the transparent protective cover 3 and stops sliding. The shielding rod 4 and the transparent protective cover 3 combine to shield the space of the guide tube 31 and the workstation slot 11, preventing external dirt and debris from entering its interior, reducing dirt residue, and preventing debris from entering the positioning surface, clamping surface and other key parts of the limiting clamping plate 21, which could change the fitting accuracy between the limiting clamping plate 21 and the workpiece, and prevent increased friction and reduced tooling service life.

Claims

1. A fixing tool for machining of automobile axle shafts, comprising a fixing support (1) and a plurality of telescopic rods (2), characterized in that: The output end of each telescopic rod (2) is fixedly connected with a limiting clamp plate (21), the limiting clamp plate (21) is slidably connected to the inner wall of the fixed support (1), a work position clamping groove (11) is arranged at the top end of the fixed support (1), a transparent protective cover (3) is fixedly connected to the top end of the fixed support (1), a guide pipe (31) is fixedly connected to the inner wall of the transparent protective cover (3), the guide pipe (31) and the work position clamping groove (11) are located at corresponding positions, a shielding rod (4) is slidably connected to the inner wall of the guide pipe (31).

2. The fixing tool for machining of an automotive axle shaft according to claim 1, characterized in that: The opposite end of each limiting clamp plate (21) is fixedly connected with an anti-skid layer (22), and the anti-skid layer (22) is not in contact with the shielding rod (4).

3. The fixing tool for machining of an automotive axle shaft according to claim 1, characterized in that: The bottom end of the shielding rod (4) is provided with a gap slot (41), and the inner wall of the gap slot (41) is fixedly connected with a return spring (42), and the return spring (42) is fixedly connected to the inner wall of the work position clamping groove (11).

4. The fixing tool for machining of an automotive axle shaft according to claim 1, characterized in that: The bottom end of the shielding rod (4) is provided with a slot (43), and the inner wall of the work position clamping groove (11) is fixedly connected with a guide rod (12), and the guide rod (12) is slidably connected to the inner wall of the slot (43).

5. The fixing tool for machining of an automotive axle shaft according to claim 4, characterized in that: The top end of the guide rod (12) is provided with a groove (121), and the inner wall of the groove (121) is mounted with a touch switch (13), and the shielding rod (4) is in contact with the touch switch (13).

6. The fixing tool for machining of an automotive axle shaft according to claim 1, characterized in that: The side wall of the fixed support (1) is rotatably connected with a rotating ring (5), and the top end of the rotating ring (5) is fixedly connected with two scraping rods (51), and the two scraping rods (51) are slidably connected to the side wall of the transparent protective cover (3).

7. The fixing tool for machining of an automotive axle shaft according to claim 6, characterized in that: The two ends of the rotating ring (5) are provided with a plurality of spherical rolling bodies (52), and the plurality of spherical rolling bodies (52) are slidably connected to the inner wall of the fixed support (1), and the fixed support (1) is provided with a motor (53) corresponding to the position of the rotating ring (5), the output end of the motor (53) is provided with a gear (54), and the gear (54) is meshed with the inner wall of the rotating ring (5).

Images