CN215657446U - Depth controllable riveting point device for electric vehicle steering gear bearing - Google Patents

Abstract

The utility model relates to the field of manufacturing of steering gear bearings, in particular to a depth-controllable riveting point device for a steering gear bearing of an electric vehicle. The riveting mechanism comprises a rack, a hydraulic cylinder, a push rod, a connecting rod and a press tire, wherein the hydraulic cylinder is fixedly arranged on the rack, the push rod is connected with the output end of the hydraulic cylinder, the axis of the push rod is collinear with the output direction of the hydraulic cylinder, the press tire is arranged on the connecting rod, and the press tire is arranged towards the bearing bowl to be riveted; the end face of the push rod, far away from the hydraulic cylinder, is provided with a sliding hole extending towards the axial direction of the push rod, the connecting rod is slidably arranged in the sliding hole, and the side wall of the connecting rod is provided with scales. This application is through the setting of scale on the connecting rod, the position of the relative push rod of regulation connecting rod that can be accurate realizes the purpose of the riveting point degree of depth of control bearing bowl.

Description

Depth controllable riveting point device for electric vehicle steering gear bearing

Technical Field

The utility model relates to the field of manufacturing of steering gear bearings, in particular to a depth-controllable riveting point device for a steering gear bearing of an electric vehicle.

Background

The steering gear bearing is arranged on the automobile steering gear, and the manufacturing method of the cross shaft assembly on the steering gear bearing is that the bearing bowls are riveted and riveted on the cross shaft, and one cross shaft assembly is provided with four bearing bowls, so that the riveting points are needed to be riveted four times by using a traditional mechanical punch, and the cross shaft is needed to be fixedly installed on a machine tool four times, so that the efficiency is low, and the labor cost is high; and traditional mechanical type punch press can't control riveting stroke and dynamics, and some universal joint pin are higher to the degree of depth and the dynamics of riveting point, use traditional mechanical type punch press yields lower.

The bearing of the automobile steering device disclosed in the Chinese utility model patent CN213419674U comprises steel balls, wherein the steel balls are fixedly arranged on a retainer, the steel balls are divided into an upper group and a lower group, the left side of the upper end of each steel ball is provided with a first outer ring, the right side of the upper end of each steel ball is provided with a first inner ring, the left side of the lower end of each steel ball is provided with a second outer ring, the right side of the lower end of each steel ball is provided with a second inner ring, the upper end of each steel ball is clamped in a channel formed in the middle of the corresponding first outer ring and the corresponding first inner ring, the lower end of each steel ball is clamped in a channel formed in the middle of the corresponding second outer ring and the corresponding second inner ring, a sealing mechanism is arranged in the middle of the upper end of the corresponding first outer ring and the upper end of the corresponding first inner ring, a dustproof sealing cavity is formed in the middle of the bottoms of the corresponding second outer ring and the second inner ring, and a dustproof sealing cover is clamped in the dustproof sealing cavity; the utility model discloses a steering gear bearing processing that the utility model provides also has above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model aims at the defects in the prior art, and particularly provides a depth-controllable riveting point device for a bearing of an electric vehicle steering gear, which solves the problems that in the prior art, a mechanical punch needs to rivet and rivet points for many times, so that the production efficiency is low, the requirements of a cross shaft on the depth and the strength of the riveting and riveting points are high, and the yield of the traditional mechanical punch is low.

Second, technical scheme

In order to solve the technical problem, the utility model provides a depth-controllable riveting point device for a bearing of an electric vehicle steering gear, which is used for riveting a bearing bowl on a cross shaft assembly and comprises symmetrically arranged riveting mechanisms, the cross shaft assembly is arranged in the middle of the symmetrically arranged riveting mechanisms, the riveting mechanisms comprise a frame, a hydraulic cylinder, a push rod, a connecting rod and a press tire,

the hydraulic cylinder is fixedly arranged on the frame, the push rod is connected with the output end of the hydraulic cylinder, the axis of the push rod is collinear with the output direction of the hydraulic cylinder, the press tire is arranged on the connecting rod, and the press tire is arranged towards the bearing bowl to be riveted;

the end face of the push rod, far away from the hydraulic cylinder, is provided with a sliding hole extending towards the axial direction of the push rod, the connecting rod is slidably arranged in the sliding hole, and the side wall of the connecting rod is provided with scales.

Preferably, the riveting mechanism further comprises a support plate, the support plate is fixedly mounted on the rack, a through hole is formed in the support plate, the diameter of the through hole is equal to the outer diameter of the push rod, and the push rod can slidably penetrate through the through hole.

Preferably, the push rod is provided with an abutting part, and when the tire is pressed to rivet the bearing bowl to a preset position, the abutting part abuts against the support plate.

Preferably, the push rod is provided with a plurality of bolt holes, and the bolt holes are communicated with the sliding holes.

Preferably, the universal joint pin fixture further comprises a universal joint pin fixture, the universal joint pin assembly is fixedly arranged on the universal joint pin fixture, the universal joint pin fixture comprises a chuck plate and a fixing block,

the chuck comprises a rotating disc, four vertical clamping fingers are arranged on the rotating disc, the four clamping fingers clamp the cross shaft assembly in the middle in a matching mode, and a first clamping block is fixedly installed on the side wall of the rotating disc;

the fixed block is provided with a second fixture block, the fixed block is fixedly arranged on the rack, the chuck plate is rotatably arranged on the fixed block, and the second fixture block and the first fixture block are mutually abutted and matched, so that the rotating disc can only rotate within a range of ninety degrees;

when the tire pressing is aligned with the bearing bowl, the second clamping block and the first clamping block are abutted together.

Preferably, the cross shaft clamp further comprises a servo motor, the chuck further comprises a rotating shaft, the rotating shaft is arranged on one side, where the clamping fingers are not arranged, of the rotating disc, and the axis of the rotating shaft is collinear with the axis of the rotating disc;

the fixed block is provided with a shaft hole for the rotating shaft to pass through, and one end of the rotating shaft, which is far away from the rotating disc, is connected with the output end of the servo motor.

Preferably, the spider clamp further comprises a clamp arranged on the opposite side of the chuck, the chuck is fixedly mounted on the frame, the clamp head of the chuck is provided with a rotating head, the rotating head can rotate around the axis of the rotating head, and when the rotating head abuts against the spider assembly, the axis of the rotating head is collinear with the axis of the spider assembly.

Third, beneficial effect

Compared with the prior art, the riveting device has the advantages that the position of the connecting rod relative to the push rod can be accurately adjusted through the arrangement of the scales on the connecting rod, and the purpose of controlling the depth of the riveting point of the bearing bowl is achieved; meanwhile, the push rod slides in the through hole through the supporting plate with the through hole, so that the push rod is prevented from falling under the action of gravity, and the stability of the device is improved; through the setting of butt portion, prevent that the output of pneumatic cylinder from exceeding predetermined stroke to cause the riveting point depth to the bearing bowl too deeply.

Furthermore, the cross shaft assembly is placed at an appointed position through the arrangement of the rotating disc and the clamping fingers, and the rotating disc can only rotate within the range of 90 degrees through the arrangement of the first clamping block and the second clamping block, so that the bearing bowl which is not riveted can be quickly read and positioned; through the setting of clamp and rotating head, press from both sides the cross axle assembly completely and fix between rotary disk and rotating head, the rotating head is rotatory together when the rotary disk is rotatory simultaneously, prevents to cause wearing and tearing to the cross axle assembly.

Drawings

FIG. 1 is a perspective view of a cross-shaft assembly;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a one-sided riveting mechanism of the present invention;

FIG. 5 is an exploded view of the push rod and connecting rod of the present invention;

FIG. 6 is a perspective view of a chuck plate and a fixing block when the spider assembly of the present invention is mounted on the chuck plate;

FIG. 7 is an exploded view of FIG. 6;

in the figure:

1 is a frame;

2 is a hydraulic cylinder;

3 is a push rod; 3a is a slide hole; 3b is a bolt hole; 3c is an abutting portion;

4 is a connecting rod; 4a is a scale;

5, pressing the tire;

6 is a supporting plate; 6a is a through hole;

7 is a cross axle clamp; 7a is a chuck; 7a1 is a rotating disc; 7a2 is a clamping finger; 7a3 is a rotating shaft; 7a4 is a first latch; 7b is a fixed block; 7b1 is a shaft hole; 7b2 is a second latch; 7c is a servo motor; 7d is a clamp; 7d1 is a rotary head;

8a is a force sensor; 8b is a displacement sensor;

9 is a cross shaft assembly; 9a is a bearing bowl.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Example 1:

as shown in fig. 1 to 5, the depth-controllable riveting point device for a bearing of an electric vehicle steering gear of the present embodiment is used for riveting a bearing bowl 9a on a cross shaft assembly 9, and comprises symmetrically arranged riveting mechanisms, the cross shaft assembly 9 is arranged in the middle of the symmetrically arranged riveting mechanisms, the riveting mechanisms comprise a frame 1, a hydraulic cylinder 2, a push rod 3, a connecting rod 4 and a tire 5,

the hydraulic cylinder 2 is fixedly arranged on the frame 1, the push rod 3 is connected with the output end of the hydraulic cylinder 2, the axis of the push rod 3 is collinear with the output direction of the hydraulic cylinder 2, the press tire 5 is arranged on the connecting rod 4, and the press tire 5 is arranged towards the bearing bowl 9a to be riveted;

the end face, far away from the hydraulic cylinder 2, of the push rod 3 is provided with a sliding hole 3a extending towards the axial direction of the push rod 3, the connecting rod 4 is installed in the sliding hole 3a in a sliding mode, and scales 4a are marked on the side wall of the connecting rod 4.

Specifically, a hydraulic oil pump is not shown in the figure and supplies power to the hydraulic cylinder 2. The hydraulic cylinder 2 is used as a power source to drive the push rod 3, the connecting rod 4 and the press tire 4 to rivet and press the bearing bowl 9 a. The hydraulic cylinder 2 is provided with a fixed output stroke, and the riveting depth of the press tire 5 is a fixed value at the moment. The position of the press tire 5 is changed by adjusting the position of the connecting rod 4 in the sliding hole 3a, so that the displacement end point of the press tire 5 is changed along with the change of the position of the connecting rod 4, and the depth of a riveting point of the press tire 5 is adjusted; the scale 4a is used for assisting to adjust, and through the setting of scale 4a, can be fast convenient find suitable riveting point.

As shown in fig. 4, the riveting mechanism further includes a supporting plate 6, the supporting plate 6 is fixedly mounted on the frame 1, a through hole 6a is formed in the supporting plate 6, the diameter of the through hole 6a is equal to the outer diameter of the push rod 3, and the push rod 3 slidably passes through the through hole 6 a.

Specifically, the penetrating hole 6a plays a role in guiding and supporting the push rod 3, so that the push rod 3 cannot be bent due to gravity to affect the normal use of the device.

In order to solve the technical problems that when the riveting speed is increased, the error of the end position of the output end of the hydraulic cylinder 2 is large, the error of the depth of a riveting point is large, and the depth of the riveting point cannot be accurately controlled, as shown in fig. 3, 4 and 5, the following preferable technical scheme is provided:

the push rod 3 is provided with an abutting part 3c, and when the press tire 5 rivets the bearing bowl 9a to a preset position, the abutting part 3c abuts against the support plate 6.

Specifically, when the above-described technical problem occurs, the abutting portion 3c abuts against the support plate 6, that is, when a predetermined rivet-pressing point is reached, the push rod 3 is prevented from further advancing.

In the present embodiment, the abutting portion 3c is a connecting iron plate for connecting the push rod 3 to the output end of the hydraulic cylinder 2.

In order to solve the technical problem of how to fix the connecting rod 4 to the slide hole 3a, as shown in fig. 4 and 5, the following preferable technical means are provided:

the push rod 3 is provided with a plurality of bolt holes 3b, and the bolt holes 3b are communicated with the slide holes 3 a.

Specifically, the connecting rod 4 is pressed against the slide hole 3a by the fit between the bolt and the bolt hole 3 b. When needing to change the riveting point, loosen the bolt from bolt hole 3b, later remove the position of connecting rod 4, compare scale 4a, later tighten the bolt in bolt hole 3b, accomplish the fixed to connecting rod 4.

In order to solve the technical problem that riveting points of four bearing bowls can be realized by fixing the cross shaft assembly 9 once, as shown in fig. 6 and 7, the following preferred technical solutions are provided:

also comprises a cross shaft clamp 7, a cross shaft assembly 9 is fixedly arranged on the cross shaft clamp 7, the cross shaft clamp 7 comprises a chuck plate 7a and a fixing block 7b,

the chuck 7a comprises a rotating disc 7a1, four vertical clamping fingers 7a2 are arranged on the rotating disc 7a1, the four clamping fingers 7a2 clamp the cross shaft assembly 9 in the middle, and the first clamping block 7a4 is fixedly installed on the side wall of the rotating disc 7a 1;

the fixed block 7b is provided with a second fixture block 7b2, the fixed block 7b is fixedly installed on the frame 1, the chuck 7a is rotatably installed on the fixed block 7b, and the second fixture block 7b2 is in mutual abutting fit with the first fixture block 7a4, so that the rotating disc 7a1 can only rotate within a range of ninety degrees;

when the tire press 5 is aligned with the bearing bowl 9a, the second latch 7b2 and the first latch 7a4 abut against each other.

Specifically, the second latch 7b2 and the first latch 7a4 are two fan-shaped discs, the circle centers of the fan-shaped circles of the second latch 7b2 and the first latch 7a4 are on the axis of the rotating disc 7a1, and the sum of the angles of the second latch 7b2 and the first latch 7a4 is two hundred and seventy degrees, so that the rotation angle of the first latch 7a4 is only ninety degrees.

Since the spider assembly 9 has a vertically and horizontally symmetrical structure, the left and right bearing bowls 9a can be swaged by rotating the chuck plate 7a ninety degrees about the axis in either direction, and then the remaining two bearing bowls 9a can be swaged by the swage 5.

After the press tire 5 is respectively riveted to the left and right bearing bowls 9a, the chuck plate 7a is rotated ninety degrees, so that the upper and lower bearing bowls 9a are shifted to the left and right direction to align with the press tire 5, and the riveting of the remaining two bearing bowls 9a is completed.

Example 2:

compared with embodiment 1, in this embodiment, as shown in fig. 2, 3, 6 and 7, the spider clamp 7 further includes a servo motor 7c, the chuck 7a further includes a rotating shaft 7a3, the rotating shaft 7a3 is installed on the side of the rotating disc 7a1 where the clamping fingers 7a2 are not provided, and the axis of the rotating shaft 7a3 is collinear with the axis of the rotating disc 7a 1;

the fixed block 7b is provided with a shaft hole 7b1 through which the rotating shaft 7a3 passes, and one end of the rotating shaft 7a3 far away from the rotating disc 7a1 is connected with the output end of the servo motor 7 c.

Specifically, the output end of the servo motor 7c is connected with the rotating shaft 7a3 through a right-angle reducer, and the shaft hole 7b1 plays a role in guiding and supporting the rotating shaft 7a 3. The servo motor 7c drives the cross shaft clamp 7 to integrally rotate by driving the rotating shaft 7a3 to rotate.

In order to solve the technical problems that the cross shaft assembly 9 cannot be completely fixed only by the rotating disc 7a1 and the clamping fingers 7a2 and the side, which is not abutted against the rotating disc 7a1, of the cross shaft assembly 9 is lack of fixation, as shown in fig. 3, the following preferred technical solutions are provided:

the spider gripper 7 further comprises a gripper 7d, the gripper 7d being arranged on the opposite side of the chuck 7a, the chuck 7a being fixedly mounted on the frame 1, the head of the chuck 7a being fitted with a rotary head 7d1, the rotary head 7d1 being rotatable about its axis, the axis of the rotary head 7d1 being co-linear with the axis of the spider assembly 9 when the rotary head 7d1 is resting on the spider assembly 9.

Specifically, by operating the clamp so that the cross shaft assembly 9 is sandwiched by the rotating disk 7a1 and the rotating head 7d1, the fixation of the cross shaft assembly 9 is completed. Since the rotary head 7d1 is rotatable, when the chuck 7a rotates to rotate the cross shaft assembly 9, the cross shaft assembly 9 will drive the rotary head 7d1 to rotate, so as to greatly reduce the friction between the cross shaft assembly 9 and the rotary head 7d1 and prevent the friction from damaging the cross shaft assembly 9.

A force sensor 8a and a displacement sensor 8b are also included.

The force sensor 8a is installed between the tire pressing 5 and the connecting rod 4, the displacement sensor 8b is fixedly installed on the hydraulic cylinder 2, and the output end is connected with the abutting part 3 c. The force sensor 8a can monitor the riveting pressure of the tire pressing 5 on the bearing bowl 9a in real time and provide the riveting pressure for the controller, so that the machine can be stopped in time when the riveting pressure is too high. The displacement sensor 8b can detect the riveting depth, and prevent the riveting point from not reaching the specified depth, so as to ensure the riveting quality.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (7)

1. A depth-controllable riveting point device for an electric vehicle steering gear bearing is characterized by comprising symmetrically-arranged riveting mechanisms, a cross shaft assembly (9) is arranged in the middle of the symmetrically-arranged riveting mechanisms, and each riveting mechanism comprises a rack (1), a hydraulic cylinder (2), a push rod (3), a connecting rod (4) and a press tire (5);

the hydraulic cylinder (2) is fixedly arranged on the rack (1), the push rod (3) is connected with the output end of the hydraulic cylinder (2), the axis of the push rod (3) is collinear with the output direction of the hydraulic cylinder (2), the press tire (5) is arranged on the connecting rod (4), and the press tire (5) is arranged towards a bearing bowl (9a) to be riveted; riveting a bearing bowl (9a) on the cross shaft assembly (9);

the end face, far away from the hydraulic cylinder (2), of the push rod (3) is provided with a sliding hole (3a) extending towards the axial direction of the push rod (3), the connecting rod (4) is slidably installed in the sliding hole (3a), and scales (4a) are carved on the side wall of the connecting rod (4).

2. The depth-controllable riveting point device for the electric vehicle steering gear bearing according to claim 1, characterized in that the riveting mechanism further comprises a support plate (6), the support plate (6) is fixedly arranged on the frame (1), a through hole (6a) is arranged on the support plate (6), the diameter of the through hole (6a) is equal to the outer diameter of the push rod (3), and the push rod (3) can slidably pass through the through hole (6 a).

3. The depth-controllable riveting point device for the bearing of the electric vehicle steering gear according to claim 2 is characterized in that the push rod (3) is provided with an abutting part (3c), and when the pressing tire (5) rivets the bearing bowl (9a) to a preset position, the abutting part (3c) abuts against the support plate (6).

4. The depth-controllable riveting point device for the electric vehicle steering gear bearing is characterized in that a plurality of bolt holes (3b) are formed in the push rod (3), and the bolt holes (3b) are communicated with the sliding holes (3 a).

5. The depth-controllable riveting point device for the electric vehicle steering gear bearing according to claim 1, characterized by further comprising a cross axle clamp (7), wherein the cross axle assembly (9) is fixedly arranged on the cross axle clamp (7), the cross axle clamp (7) comprises a chuck plate (7a) and a fixing block (7b),

the chuck (7a) comprises a rotating disc (7a1), four vertical clamping fingers (7a2) are arranged on the rotating disc (7a1), the four clamping fingers (7a2) clamp the cross shaft assembly (9) in the middle, and the first clamping block (7a4) is fixedly installed on the side wall of the rotating disc (7a 1);

a second clamping block (7b2) is arranged on the fixed block (7b), the fixed block (7b) is fixedly installed on the rack (1), the chuck (7a) is rotatably installed on the fixed block (7b), and the second clamping block (7b2) and the first clamping block (7a4) are mutually abutted and matched, so that the rotating disc (7a1) can only rotate within a range of ninety degrees;

when the tire pressing device (5) is aligned with the bearing bowl (9a), the second clamping block (7b2) and the first clamping block (7a4) are abutted together.

6. The depth-controllable riveting point device for the bearing of the electric vehicle steering gear according to claim 5, characterized in that the cross shaft clamp (7) further comprises a servo motor (7c), the chuck (7a) further comprises a rotating shaft (7a3), the rotating shaft (7a3) is arranged on the side of the rotating disc (7a1) where the clamping fingers (7a2) are not arranged, and the axis of the rotating shaft (7a3) is collinear with the axis of the rotating disc (7a 1);

the fixed block (7b) is provided with a shaft hole (7b1) for the rotating shaft (7a3) to pass through, and one end of the rotating shaft (7a3) far away from the rotating disc (7a1) is connected with the output end of the servo motor (7 c).

7. A depth-controllable rivet point device for a steering gear bearing of an electric vehicle according to claim 5, characterized in that the cross clamp (7) further comprises a clamp (7d), the clamp (7d) is arranged at the opposite side of the chuck (7a), the chuck (7a) is fixedly mounted on the frame (1), the jaw of the chuck (7a) is provided with a rotary head (7d1), the rotary head (7d1) can rotate around its own axis, and when the rotary head (7d1) is abutted on the cross shaft assembly (9), the axis of the rotary head (7d1) is collinear with the axis of the cross shaft assembly (9).

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