CN205571806U - Automobile axle shell presss from both sides tight rotary jig - Google Patents

Abstract

The utility model provides a rotary fixture for clamping an automobile axle housing. It includes a frame, the frame is provided with a support mechanism and a rotary drive mechanism for driving the support mechanism to rotate, the front end of the support mechanism is provided with a clamping mechanism, and the frame is provided with a drive clamping mechanism to clamp and release the drive mechanism. The purpose of the utility model is to provide a rotary fixture for clamping an automobile axle housing, which is used to solve the problems of poor clamping effect and high maintenance cost of the chuck in the prior art.

Description

Automobile axle housing clamping rotary fixture

technical field

The utility model belongs to the technical field of fixtures, in particular to a rotary fixture for clamping automobile axle housings.

Background technique

In the welding production of automobile axle housing, it is necessary to clamp the two ends of the axle housing for machine welding, and it needs to be turned over. Therefore, the clamping mechanism at both ends is required not only to clamp the workpiece, but also to rotate it. In the past, electric chucks have been used for clamping. The workpiece is rotated, but because the electric chuck uses the motor to drive the Archimedes spiral disc inside the chuck to rotate and clamp the workpiece, the movement is slow and the operating efficiency is low.

Due to environmental factors such as dust and splash in the welding environment, the chuck needs to be disassembled and cleaned every week before it can operate normally. In addition, due to the damage of the Archimedes spiral disk and the collapse of the chuck, one electric chuck needs to be replaced every year on average. Chuck assembly. Moreover, because the electric chuck is driven by a motor, the torque of the motor determines the clamping force of the chuck. In the welding operation environment, the output force of the chuck is affected by dust, splashes, etc., resulting in a small clamping force. Often because the chuck is not Clamping the workpiece results in defective welding.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a rotary fixture for clamping automobile axle housings, which is used to solve the problems of poor clamping effect and high maintenance cost of the chuck in the prior art.

In order to achieve the above purpose and other related purposes, the utility model provides an automobile axle housing clamping rotary fixture, including a frame, the frame is provided with a support mechanism and a rotary drive mechanism for driving the support mechanism to rotate, and the support mechanism A clamping mechanism is provided at the front end, and a driving mechanism for driving the clamping mechanism to clamp and loosen is provided on the frame.

Further, the supporting mechanism includes a main shaft, which is rotatably arranged on the frame, on which a transmission gear is keyed, the front end of the main shaft protrudes from the frame, and is connected with a mounting base.

Further, the clamping mechanism includes a support plate, the support plate is fixed on the installation base, a bracket is installed at the front end of the support plate, and a lever-type clamping arm is respectively hinged on both sides of the support plate; A transmission shaft is arranged inside the main shaft. The front end of the transmission shaft protrudes from the main shaft and is connected with a transmission arm. The transmission arm is connected with the rear end of the clamping arm through two connecting rods. The front end of the clamping arm is equipped with clamping jaws.

Further, the front and rear ends of the connecting rod are respectively hinged with the rear end of the clamping arm and the transmission arm, and spacers are arranged between the clamping jaws and the clamping arm and fastened by bolts.

Further, the bracket is also provided with a guide sleeve, the transmission arm is in the shape of a cross, the rear end of the transmission arm is connected to the transmission shaft, and the front end extends into the guide sleeve; The root connecting rod is hinged.

Further, one end of the guide sleeve is for the transmission arm to extend into, and the other end is provided with a dustproof cover.

Further, the rotation driving mechanism is a torsion cylinder, and the torsion cylinder is connected with a transmission gear.

Further, the drive mechanism includes a cylinder, the cylinder is installed at the rear end of the frame, the piston rod of the cylinder is connected with a cylinder connection head, and the cylinder connection head extends into the main shaft, and the cylinder connection head is covered with A connection nut is provided, the rear end of the connection nut is sleeved on the cylinder connection head, the front end is sleeved on the transmission shaft, and a plane thrust ball bearing is arranged between the cylinder connection head and the transmission shaft.

Further, the front end of the connecting nut is connected to the transmission shaft through threads, a locking screw is also provided between the front end of the connecting nut and the transmission shaft, and an annular protrusion is provided on the connecting head of the cylinder. The inner wall of the end is provided with an annular boss.

As mentioned above, the utility model has the following beneficial effects:

1. The production efficiency is improved: the electric chuck needs 15 seconds to clamp the workpiece, and the device only needs 5 seconds to clamp the workpiece.

2. The product processing is stable and the quality is improved: no workpiece clamping is not firm or displacement occurs when welding is turned over during use.

3. The operating cost of the equipment is greatly reduced: this device avoids the man-hour cost of weekly dismantling and maintenance of the electric chuck and the economic loss of replacing the electric chuck.

4. The fixture has good expandability and low environmental requirements. It is very suitable for welding operations under harsh conditions such as severe dust and splashes. Moreover, the device is reliable in operation, high in efficiency, and low in cost. It adopts a modular design structure, and can be matched with different pad heights corresponding to products, and can be widely used in the welding industry.

Description of drawings

Fig. 1 is the structure diagram of a kind of automobile axle housing clamping rotary fixture of the utility model;

Fig. 2 is an upper schematic diagram of a clamping rotary fixture for an automobile axle housing of the present invention.

Part number description

1 jaw

2 spacers

3 dust cover

4 clamping arm

5 brackets

6 wear pin 1

7 wear sleeve

8 link

9 guide sleeve

10 wear pin 2

11 Transmission arm

12 locking pin

13 Mounting the base

14 Support plate

15 drive shaft

16 Locking screw

17 Plane thrust ball bearing

18 cylinder connector

19 Union nut

20 cylinder mounts

21 cylinders

22 straight pin

23 Transmission gear

24 racks

25 spindle

detailed description

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

Please refer to Figure 1 to Figure 2. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

In order to describe the utility model in detail, the utility model is described in detail next: as shown in Figure 1 and Figure 2 (the default left side is the front in the figure), including a frame 24, the frame 24 is equipped with a The free-rotating main shaft 25 is key-connected with a transmission gear 23 on the main shaft 25, and the transmission gear 23 is connected with a torsion cylinder. The front end of the main shaft 25 stretches out from the frame 24, and the front end of the main shaft 25 is disc-shaped, and the front end of the main shaft 25 is equipped with a disc-shaped mounting base 13 by bolts, and the front end of the mounting base 13 is fixed with two left and right A support plate 14 , the support plate 14 is rectangular, and the left and right support plates 14 are vertically and symmetrically fixed on the installation base 13 .

The front ends of the left and right support plates 14 are fixed with a support 5, the support 5 is a rectangular plate, and the front of the support 5 faces the left and right support plates 14 and is installed in the center. The upper side of the bracket 5 is provided with two symmetrical supports, and the supports are provided with pin holes. The same applies to the lower side of the bracket 5 . The support 5 is respectively hinged with upper and lower two lever-type clamping arms 4 through the bearings on the upper and lower sides. A wear-resistant sleeve 7 is also provided at the joint between the clamping arm 4 and the pin hole. The middle part of the bracket 5 is provided with an installation hole, and a guide sleeve 9 is arranged in the installation hole. On the front facing side of the bracket 5, a dustproof cover 3 is installed, and the dustproof cover 13 blocks the installation hole.

The inside of the main shaft 25 is provided with a transmission shaft 15, the front end of the transmission shaft 15 protrudes from the main shaft 25, and is connected with a transmission arm 11, the transmission arm 11 is in the shape of a cross, and the rear end of the transmission arm 11 is connected to the transmission shaft 15, The front end stretches into the guide sleeve 9. Two connecting rods 8 are hinged at the left and right ends of the transmission arm 11 . The front end of transmission shaft 15 stretches into the rear end of transmission arm 11 and is fixed by locking pin 12 .

One end of the connecting rod is hinged on the transmission arm 11 , and the other end is hinged on the rear end of the clamping arm 4 . The rear end of the clamping arm 4 is hinged with a connecting rod 8 , and the front end is connected with a clamping jaw 1 through bolts, and a spacer 2 is arranged between the clamping jaw 1 and the front end of the clamping arm 4 .

The rear end of the frame 24 is equipped with a cylinder 21, the piston rod of the cylinder 21 is connected with a cylinder connector 18, and the cylinder connector 18 is stretched into its inside by the rear end of the main shaft 25, and the cylinder connector 18 is covered A coupling nut 19 is provided.

The front end of the connecting nut 19 is sleeved on the rear end of the transmission shaft 15 through an internal thread, and the rear end of the connecting nut 19 is sleeved on the cylinder connector 18, between the cylinder connector 18 and the rear end of the transmission shaft 15 A plane thrust ball bearing 17 is also provided, and the plane thrust ball bearing 17 is sleeved on the front end of the cylinder connection head 18 . The connecting nut 19 and the transmission shaft 15 are also fastened by a locking screw 16 .

The connecting nut 19 is in the shape of a cylinder with a receiving space inside it, and its inside is divided into a front section, a middle section and a rear section from front to back, and the inner diameters of the front section, middle section and rear section decrease in turn. And an annular boss is formed on the inner wall of the rear end, and the inner wall of the front section is provided with threads.

The cylinder connector 18 is cylindrical, the cylinder connector 18 is provided with an annular protrusion, and the rear end of the cylinder connector 18 is provided with threads. And be connected with the piston rod of cylinder 21 by screw thread and cylindrical pin 22.

During installation, first set the plane thrust ball bearing 17 on the front end of the cylinder connector 18, and then put the cylinder connector 18 from the front end of the connecting nut 19, so that the annular protrusion on the cylinder connector 18 is stuck on the connecting nut 19. On the annular boss, the rear end of the cylinder connector 18 stretches out from the rear section of the connecting nut 19, and the transmission shaft 15 is installed at last.

During work, the cylinder connector 18 is pushed forward by the piston rod of the cylinder 21, and the plane thrust ball bearing 17 is promoted by the cylinder connector 18, and the plane thrust ball bearing 17 pushes the rear end of the transmission shaft 15 to move the transmission shaft 15 forward. The transmission shaft 15 pushes the transmission arm 11 to move forward. When the transmission arm 11 moves forward, the connecting rod 8 hinged on it is hinged on the clamping arm 4 at the other end. When the transmission arm 11 moves forward, the connecting rod 8 rotates. Thereby pushing the rear end of the clamping arm 4 to move upwards, thereby making the front end of the clamping arm 4 move downwards, driving the jaws 1 to clamp the automobile axle housing.

When turning over is required, start the torsion cylinder, and the transmission gear 23 is driven to rotate by the torsion cylinder, thereby driving the main shaft 25 to rotate. The main shaft 25 drives the clamping mechanism to rotate, thereby driving the axle housing to turn over. Because the plane thrust ball bearing 17 is provided, when turning over, the transmission shaft 15 turns over and drives the connecting nut 19 to rotate. The cylinder connecting head 18 still presses against the plane thrust ball bearing 17 under the condition of not overturning, thereby pressing against the transmission shaft 15, which ensures that the jaws 1 still clamp the axle housing when overturning.

When the jaw 1 needs to be loosened, the piston rod moves backward, thereby driving the cylinder connector 18 to move backward, and the annular protrusion of the cylinder connector 18 contacts the annular step of the connecting nut 19, thereby driving the connecting nut 19 to move backward The movement drives the transmission shaft 15 to move backward, and finally the connecting rod 8 moves backward to drive the rear end of the clamping arm 4 to move downward, and the jaw 1 is released.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (9)

1. A clamping rotary fixture for automobile axle housing, characterized in that: it includes a frame, the frame is provided with a support mechanism and a rotary drive mechanism for driving the support mechanism to rotate, the front end of the support mechanism is provided with a clamping mechanism, The frame is provided with a driving mechanism for driving the clamping mechanism to clamp and loosen. 2. A clamping rotary fixture for automobile axle housing according to claim 1, characterized in that: the supporting mechanism includes a main shaft, the main shaft is rotatably arranged on the frame, and the key on the main shaft is connected with a transmission gear, the front end of the main shaft extends out of the frame, and is connected with a mounting base. 3. A clamping rotary fixture for automobile axle housing according to claim 2, characterized in that: the clamping mechanism includes a support plate, the support plate is fixed on the installation base, and a bracket is installed at the front end of the support plate , a lever-type clamping arm is respectively hinged on both sides of the bracket; A transmission shaft is arranged inside the main shaft, and the front end of the transmission shaft protrudes from the main shaft and is connected with a transmission arm. The transmission arm is connected with the rear end of the clamping arm through two connecting rods, and the front end of the clamping arm is equipped with jaws. 4. A clamping rotary clamp for automobile axle housing according to claim 3, characterized in that: the front and rear ends of the connecting rod are respectively hinged with the rear end of the clamping arm and the transmission arm, and the joint between the clamping claw and the clamping arm Pads are arranged between and fastened by bolts. 5. A clamping rotary fixture for automobile axle housing according to claim 3, characterized in that: the bracket is also provided with a guide sleeve, the transmission arm is in the shape of a cross, and the rear end of the transmission arm is connected to the transmission shaft , the front end extends into the guide sleeve; the left and right ends of the transmission arm are respectively hinged with two connecting rods. 6. A clamping rotary fixture for automobile axle housing according to claim 5, characterized in that: one end of the guide sleeve is inserted by the transmission arm, and the other end is provided with a dustproof cover. 7 . The rotary jig for clamping an automobile axle housing according to claim 2 , wherein the rotary drive mechanism is a torsion cylinder connected to a transmission gear. 8 . 8. A clamping rotary fixture for automobile axle housing according to claim 3, characterized in that: the driving mechanism includes a cylinder, the cylinder is installed at the rear end of the frame, and the piston rod of the cylinder is connected with a cylinder Connecting head, the connecting head of the cylinder extends into the main shaft, the connecting nut of the cylinder is sleeved on the connecting head, the rear end of the connecting nut is sleeved on the connecting head of the cylinder, the front end is sleeved on the transmission shaft, the cylinder A plane thrust ball bearing is arranged between the connecting head and the transmission shaft. 9. A clamping rotary fixture for automobile axle housing according to claim 8, characterized in that: the front end of the connecting nut is connected to the transmission shaft through threads, and a locking mechanism is provided between the front end of the connecting nut and the transmission shaft. screw, an annular projection is provided on the connecting head of the cylinder, and an annular projection is provided on the inner wall of the rear end of the connecting nut.