Clamping tool for axle shaft sleeve
Through the combined structure of clamping ring and clamping disc, adaptive clamping is achieved using clamping cylinders and lifting electric cylinders, which solves the damage and measurement error problems of the existing device to the half-shaft sleeve, and realizes the function of lossless clamping and adaptation to different diameters.
Patent Information
- Application Number
- CN202422050982.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The existing half-axle bushing fixing devices are prone to surface damage and are not reliable when clamped, resulting in large measurement errors and difficult to adapt to half-axle bushings of different diameters.
The clamping ring and clamping disk combine structure is adopted. The clamping ring is located above the clamping disk and eight clamping mechanisms are evenly distributed. Each clamping mechanism consists of clamping cylinders, sliders, square rods and magnets. Adaptive clamping is achieved using lifting electric cylinders and stroke sensors to adapt to semi-axle bushings of different sizes.
Lossless clamping is achieved to prevent casing from skewing and uneven stress, and to adapt to semi-axle casings of different diameters, improving measurement accuracy and stability.
Smart Images
Figure CN223186035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixing a half-axle sleeve, in particular to a half-axle sleeve clamping tool. Background Art
[0002] The half-axle sleeve is integrated with the drive axle housing to fix the axial relative position of the left and right drive wheels, and together support the frame and the mass of the various assemblies thereon. At the same time, it withstands the road reaction force and torque transmitted from the wheels when the car is running, and transmits them to the frame through the suspension. When the half-axle sleeve is produced in new specifications, it is often measured and tested in the laboratory. Usually, its important parameters such as surface roughness or diameter are tested. The existing half-axle sleeve fixing device generally adopts a two-side clamping method, which causes damage to its surface at the beginning of clamping. The fixing method is not firm and often deviates during the test, resulting in large measurement errors. When faced with half-axle sleeves of different diameters, new equipment needs to be manufactured for clamping.
[0003] Therefore, there is an urgent need for a clamping fixture that can fix the half-axle sleeve in all directions to prevent displacement, and at the same time can adapt to half-axle sleeve products of different sizes. Utility Model Content
[0004] In order to make up for the deficiencies in the prior art and achieve the above functions, the utility model provides a half-axle sleeve clamping tool.
[0005] The utility model is achieved through the following technical solutions:
[0006] A half-axle sleeve clamping fixture includes a clamping ring and a clamping disc connected up and down by a lifting electric cylinder. The clamping ring and the clamping disc are concentric and of equal size and are located directly above the clamping disc. Eight clamping mechanisms are evenly fixed to the clamping ring and the clamping disc around the circumference. Each clamping mechanism includes a clamping cylinder facing the center of the circle, and a slider is fixed to the front end of the piston rod of the clamping cylinder. The slider is divided into an abutting portion at the front end and a movable portion at the rear end.
[0007] Two receiving grooves are provided on the left and right sides of the movable part, and each receiving groove is provided with a square rod that can rotate outward. The front end of the square rod is provided with a roller that can rotate horizontally. The front end of the abutting part is provided with an arc-shaped heat insulation pad and a magnet.
[0008] Furthermore, the lifting electric cylinder is fixed between each clamping cylinder of the clamping plate and two are arranged inside and outside. Each lifting electric cylinder is connected to the bottom of the clamping ring through the floating joint at the front end of its piston rod. Each lifting electric cylinder is provided with a stroke sensor that can detect the telescopic length of its piston rod.
[0009] Furthermore, the center of the clamping ring is a circular hole that passes through from top to bottom, and the center of the clamping disc is closed.
[0010] Further, a square hole penetrating left and right is provided at the center of the abutting portion, and a spring passing through the square hole is fixed on the inner side walls of the two square rods. When the two square rods are completely located in the receiving groove, the spring is in a compressed state;
[0011] The arc-shaped heat insulation backing plate is fixed to the front end of the magnet.
[0012] Further, when the square rod is completely retracted into the receiving groove, its length extends to the front end of the abutting portion, and the outer side of the square rod is flush with the outer side of the slider. Slot holes allowing the square rod to pass through are provided on the magnets on both sides.
[0013] Further, sliding groove blocks for restricting the front and rear movement of each slider are provided on both the clamping ring and the clamping disc, and limiting protrusions are provided on the outer side of each square rod;
[0014] When the slider is controlled by the clamping cylinder to move backward, the rear end of the slider retracts into the sliding groove block and the square rods on both sides are compressed. The limiting protrusion abuts against the front end of the sliding groove block, and the clamping mechanism is completely located outside the central through hole of the clamping ring;
[0015] When the slider is controlled by the clamping cylinder to move forward, the front end portion of the clamping mechanism is located within the central through hole of the clamping ring. The front end of the slider extends out of the sliding groove block and the square rods on both sides extend to both sides at a certain angle under the action of the spring.
[0016] The beneficial effects of the present utility model are as follows: (1) The circumferential clamping can effectively prevent the skew and uneven stress of the half shaft casing. (2) The use of an electric cylinder to control the upper clamping height can adapt to half shaft casings of different length specifications. (3) Each clamping mechanism can adaptively contact the half shaft casing in a three-point manner, and has two clamping methods: flexible clamping and rigid abutting clamping, making the clamping more reliable and capable of adapting to half shaft casings of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structure schematic diagram of the overall structure of the present utility model;
[0018] Figure 2 is Figure 1 a bottom view schematic diagram of
[0019] Figure 3 is Figure 1 an enlarged schematic diagram of part A in
[0020] Figure 4 is Figure 3 a structure schematic diagram with the sliding groove block removed;
[0021] Figure 5 is a top view structure diagram when the present utility model is working;
[0022] In the figure:
[0023] 1. Clamping ring, 101. Clamping disc, 2. Clamping cylinder, 201. Sliding groove block, 3. Lifting electric cylinder, 301. Floating joint, 302. Stroke sensor, 4. Slide block, 401. Moving part, 4011. Accommodating groove, 402. Contact part, 4021. Square hole, 5. Square rod, 501. Limit protrusion, 502. Roller, 503. Spring, 6. Magnet, 7. Heat insulation cushion plate, 8. Half shaft sleeve. Detailed implementation manners
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.
[0026] As Figures 1 to 5 shown, the present invention includes a clamping ring 1 and a clamping disc 101 connected up and down by a lifting electric cylinder 3. The clamping ring 1 and the clamping disc 101 are concentric and of the same size, and the clamping ring 1 is located directly above the clamping disc 101. Eight clamping mechanisms are uniformly fixed on the circumferences of both the clamping ring 1 and the clamping disc 101. Each clamping mechanism includes a clamping cylinder 2 facing the center of the circle, and the front end of the piston rod of the clamping cylinder 2 is fixed with a slide block 4. The slide block 4 is divided into a contact part 402 at the front end and a moving part 401 at the rear end;
[0027] Two accommodating grooves 4011 are provided on the left and right sides of the moving part 401, and a square rod 5 that can rotate outward is provided in each accommodating groove 4011. A roller 502 that can rotate horizontally is provided at the front end of the square rod 5 to ensure that the surface of the half shaft sleeve 8 is not damaged during rotation when contacting and clamping; an arc-shaped heat insulation cushion plate 7 and a magnet 6 are provided at the front end of the contact part 402. The heat insulation cushion plate 7 can be made of heat insulation cardboard or part of rubber material, and has toughness, which is used to buffer the impact force during contact and the high temperature during test measurement. The magnet 6 can magnetically fix limitedly, and the arc-shaped heat insulation cushion plate 7 is fixed at the front end of the magnet 6.
[0028] The lifting electric cylinder 3 is fixed between each clamping cylinder 2 of the clamping disc 101 and there are two sets arranged inside and outside. The reason for using an electric cylinder instead of a pneumatic cylinder or a hydraulic cylinder is that it has precise stroke control. Each lifting electric cylinder 3 is connected to the bottom of the clamping ring 1 through a floating joint 301 at the front end of its piston rod. Even if the clamping ring 1 is slightly skewed, it can still maintain clamping. Each lifting electric cylinder 3 is equipped with a stroke sensor 302 that can detect the telescopic length of its piston rod. It can detect whether the clamping ring 1 is tilted and can also provide the distance data between the clamping ring 1 and the clamping disc 101, and can adapt to half-axle sleeves 8 of different specifications such as length and diameter.
[0029] The center of the clamping ring 1 is a round hole that penetrates up and down for placing the half-axle sleeve 8, and the center of the clamping disc 101 is closed.
[0030] A square hole 4021 that penetrates left and right is provided at the center of the abutting portion 402. A spring 503 that passes through the square hole 4021 is fixed on the inner side walls of the two square rods 5 to control the extension and contraction of the double rods. When the two square rods 5 are completely located in the receiving groove 4011, the spring 503 is in a compressed state; when the square rods 5 are completely retracted into the receiving groove 4011, their length extends to the front end of the abutting portion 402, and the outer sides of the square rods 5 are flush with the outer sides of the slider 4. Slot holes that allow the square rods 5 to pass through are provided on the two magnets 6 to avoid interference.
[0031] Sliding groove blocks 201 that can limit the front and back movement of each slider 4 are provided on both the clamping ring 1 and the clamping disc 101 for protection and positioning. Limiting protrusions 501 are provided on the outer sides of each square rod 5.
[0032] When the slider 4 is controlled by the clamping cylinder 2 to move backward, the rear end of the slider 4 retracts into the sliding groove block 201 and the two side square rods ⑤ are compressed. The limiting protrusion 501 abuts against the front end of the sliding groove block 201, and the clamping mechanism is completely outside the central through hole of the clamping ring 1. At this time, the half-axle sleeve 8 can be placed.
[0033] When the slider 4 is controlled by the clamping cylinder 2 to move forward, the front end of the clamping mechanism is inside the central through hole of the clamping ring 1. The front end of the slider 4 extends out of the sliding groove block 201, and the two side square rods 5 extend to both sides at a certain angle under the action of the spring 503. At the same time, the heat insulation backing plate 7 is squeezed and elastically deformed to contact the outer wall of the half-axle sleeve 8 for rigid clamping. The two rollers 502 on each clamping mechanism also contact the outer wall of the half-axle sleeve 8. At this time, the spring 503 is stretched, and the two square rods 5 are subjected to an inward pulling force, and then the rollers 502 generate elastic clamping on the half-axle sleeve 8, that is, each clamping mechanism makes three-point contact with the half-axle sleeve 8.
[0034] The realization of the present utility model is achieved by connecting with components such as a conventional host computer, a PLC, and an air valve. The connection methods of the electrical and pneumatic circuits and the components are all prior arts and will not be elaborated herein.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present utility model should be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solutions of the present utility model.
Claims
1. A half-axle sleeve clamping tool, characterized by: It comprises a clamping ring (1) and a clamping disc (101) connected up and down by a lifting electric cylinder (3), the clamping ring (1) and the clamping disc (101) are concentric and of equal size, and the clamping ring (1) is located directly above the clamping disc (101), and eight clamping mechanisms are evenly fixed on the clamping ring (1) and the clamping disc (101), each of the clamping mechanisms comprises a clamping cylinder (2) facing the center of the circle, and a slider (4) is fixed to the front end of the piston rod of the clamping cylinder (2), and the slider (4) is divided into a front end abutment portion (402) and a rear end movable portion (401); Two accommodating grooves (4011) are provided on the left and right sides of the movable portion (401), and a square rod (5) capable of rotating outward is provided in each accommodating groove (4011). A roller (502) capable of rotating horizontally is provided at the front end of the square rod (5), and an arc-shaped heat-insulating pad (7) and a magnet (6) are provided at the front end of the abutting portion (402).
2. The half-axle sleeve clamping fixture according to claim 1, characterized in that: The lifting electric cylinder (3) is fixed between each clamping cylinder (2) of the clamping disc (101) and two are provided inside and outside. Each lifting electric cylinder (3) is connected to the bottom of the clamping ring (1) through a floating joint (301) at the front end of its piston rod. Each lifting electric cylinder (3) is provided with a stroke sensor (302) capable of detecting the telescopic length of its piston rod.
3. The half-axle sleeve clamping fixture according to claim 1, characterized in that: The center of the clamping ring (1) is a circular hole that passes through from top to bottom, and the center of the clamping disc (101) is closed.
4. The half-axle sleeve clamping fixture according to claim 3, characterized in that: A square hole (4021) is provided in the center of the abutting portion (402) and passes through the square hole (4021). A spring (503) passing through the square hole (4021) is fixed on the inner side wall of the two square rods (5). When the two square rods (5) are completely located in the receiving groove (4011), the spring (503) is in a compressed state. The arc-shaped heat-insulating pad (7) is fixed to the front end of the magnet (6).
5. The half-axle sleeve clamping fixture according to claim 4, characterized in that: When the square rod (5) is completely retracted into the accommodating groove (4011), its length extends to the front end of the abutting portion (402), the outer side of the square rod (5) is flush with the outer side of the slider (4), and the magnets (6) on both sides are provided with slots capable of allowing the square rod (5) to pass through.
6. The half-axle sleeve clamping fixture according to claim 5, characterized in that: A sliding groove block (201) capable of limiting the forward and backward movement of each slider (4) is provided on both the clamping ring (1) and the clamping disc (101), and a limiting protrusion (501) is provided on the outer side of each square rod (5); When the slider (4) is controlled by the clamping cylinder (2) to move backward, the rear end of the slider (4) is retracted into the sliding groove block (201) and the square rods (5) on both sides are compressed, the limiting protrusion (501) abuts against the front end of the sliding groove block (201), and the clamping mechanism is completely located outside the central through hole of the clamping ring (1); When the slider (4) is controlled to move forward by the clamping cylinder (2), the front end of the clamping mechanism is located within the central through hole of the clamping ring (1), the front end of the slider (4) extends out of the sliding slot block (201), and the square rods (5) on both sides are extended to a certain angle to both sides by the action of the spring (503).