CN203712601U - Oil free bearing dismantling device - Google Patents

Abstract

The utility model discloses an oil-free bearing dismounting tool, which solves the problems of single function, poor versatility, slow disassembly speed and laborious problems of the oil-free bearing dismounting device in the prior art. The impact slider is sleeved on the slider and slides with the slider. The front end of the slider is fixed with a knocking block, and the front end of the knocking block is fixed with a positioning shaft. The positioning shaft is a stepped shaft with a large front and a small rear. The surface forms an annular percussion force transmission surface, the outer diameter of the percussion force transmission surface is greater than the inner diameter of the oil-free bearing inner ring, and is less than or equal to the outer diameter of the oil-free bearing outer ring, and the rear end of the slide bar is provided with a stopper. The utility model enables the oil-free bearing to be evenly stressed during the disassembly process, which can prevent the oil-free bearing from being damaged during the installation process, and at the same time improves the installation accuracy of the oil-free bearing and the operation safety during disassembly, and has a simple structure. , easy to use, can be adapted to the disassembly and assembly of oil-free bearings of different specifications by replacing the positioning shaft of different specifications.

Description

An oil-free bearing dismounting tool

technical field

The utility model relates to an oil-free bearing, in particular to an oil-free bearing disassembly tool.

Background technique

In the manufacture of body-in-white welding, welding fixtures and conveying equipment are important equipment for body manufacturing. These devices are rotating during operation, and they are inseparable from oil-free bearings. Due to their low manufacturing costs, they are widely used It is used on the jig arm of the welding fixture and the shear beam spreader and other equipment, but after the equipment has been in operation for a long time, the oil-free bearings will wear out, which will lead to equipment failure and precision, and must be replaced.

At present, the way to disassemble and assemble oil-free bearings is to directly tap the oil-free bearings with tools such as hammers to make them exit from the mounting holes, and to disassemble and assemble oil-free bearings by directly tapping with hammers, which is time-consuming and labor-intensive and has low safety, which is the most important What's more, when hitting with a hammer, the force surface of the oil-free bearing is small, which will cause uneven force on the oil-free bearing, which will affect the installation accuracy of the bearing and even cause damage to the oil-free bearing.

Chinese patent authorization announcement number: CN202006446U , authorization announcement date 2011.10.12, discloses an oil-free bearing removal device for easy disassembly of oil-free bearings, which includes a shaft sleeve installed with an oil-free bearing, and is characterized in that the shaft sleeve is equipped with The pull sleeve close to the end surface of the oil-free bearing and the pin shaft connected with the pull sleeve, the outer diameter of the pull sleeve is larger than the inner hole size of the oil-free bearing. Its shortcoming is that this device can only be used for the disassembly of oil-free bearings, and cannot be used for the installation of oil-free bearings. In addition, the principle of this device is to transmit the tightening force of the nut to the pin shaft through the screw to drive the oil-free bearing to move outward. It is necessary to turn the nut round and round with a wrench. The disassembly is not only slow but also laborious.

Utility model content

The utility model aims to solve the problems of single function, poor versatility, slow disassembly speed and laboriousness of the oil-free bearing dismounting device in the prior art, and provides an easy-to-use device that can quickly disassemble and assemble the oil-free bearing, and disassemble Labor-saving oil-free bearing removal tool. ``

In order to achieve the above object, the utility model adopts the following technical solutions:

An oil-free bearing dismounting tool, including a sliding bar and a bumping slider, the bumping slider is sleeved on the sliding rod and slidingly matched with the sliding bar, a knocking block is fixed at the front end of the sliding bar, and the knocking block The front end is fixed with a positioning shaft, and the positioning shaft is a stepped shaft with a large front and a small rear. The stepped surface on the positioning shaft forms a circular percussion force transmission surface, and the outer diameter of the percussion force transmission surface is larger than that of the oil-free The inner diameter of the inner ring of the bearing is less than or equal to the outer diameter of the outer ring of the oil-free bearing, and the rear end of the slide bar is provided with a stopper. The impact slider in the utility model collides with the knocking block to generate the knocking force. Since the outer diameter of the knocking force transmission surface is greater than the inner diameter of the oil-free bearing inner ring, and is less than or equal to the outer diameter of the oil-free bearing outer ring, the shaft to be positioned After being inserted into the bearing hole of the oil-free bearing, the knocking force transmission surface will be in contact with the outer end surface of the oil-free bearing, and the knocking force generated by the impact slider hitting the knocking block will act on the oil-free bearing through the knocking force transmission surface The outer end surface of the bearing, so that the oil-free bearing is pushed into or out of the bearing mounting hole, so as to achieve the purpose of installing or dismounting the oil-free bearing. Because the knocking force is transmitted through the knocking force transmission surface, the oil-free bearing is evenly stressed, not easy to be damaged, and can greatly improve the installation accuracy. The safety is good, so that the disassembly and assembly of the oil-free bearing saves time and effort, and is very fast.

Preferably, the knocking block is in the shape of a truncated cone, and the small-diameter end of the knocking block is fixedly connected to the large-diameter end of the positioning shaft. The knocking block is in the shape of a truncated cone, which is convenient to concentrate the knocking force generated by the impacting slider hitting the knocking block, so that the knocking force can be fully transmitted to the knocking force acting surface, so that the oil-free bearing can be quickly disassembled.

Preferably, the large-diameter end of the positioning shaft is fixed with a connecting screw, and the connecting screw is screwed to the small-diameter end of the knocking block. The positioning shaft is threadedly connected with the knocking block, which is convenient for replacing positioning shafts of different specifications so that the utility model can adapt to oil-free bearings of different models and specifications, and has good flexibility and versatility.

Preferably, a detachment head is provided between the positioning shaft and the connecting screw, the detachment head is in the shape of a regular hexagon, one end of the detachment head is fixedly connected to the large-diameter end of the positioning shaft, and the other end is fixedly connected to the connecting screw. The removal head acts like a nut, so that the positioning shaft can be removed for replacement with tools such as a wrench.

Preferably, the impact slider is cylindrical.

Preferably, the surface of the collision slider is provided with a circular arc-shaped concave surface, and the arc-shaped concave surface forms a gripping portion. The curved concave surface facilitates grip and improves comfort.

Preferably, the rear end of the sliding rod is provided with threads, and the stopper is sleeved on the sliding rod and fixed on the sliding rod through a compression nut. The stopper is socketed with the slide bar and fixed on the slide bar through a compression nut, and impact slide blocks of different masses and sizes can be replaced according to actual needs to generate different forces.

Therefore, the beneficial effects of the utility model are:

(1) Make the oil-free bearing evenly stressed during the disassembly process, ensure that the oil-free bearing is not damaged during the installation process, prolong the service life of the bearing, and improve the installation accuracy and disassembly time of the oil-free bearing operational safety;

(2) The structure is simple and easy to use, and it can be applied to the disassembly and assembly of oil-free bearings of different specifications by replacing the positioning shafts of different specifications. the

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is an enlarged view of A in Fig. 1 .

In the figure: slide rod 1, impact slider 2, knocking block 3, positioning shaft 4, knocking force transmission surface 5, stopper 6, removal head 7, arc concave surface 8, compression nut 9.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

An oil-free bearing dismounting tool as shown in Figure 1, including a sliding rod 1, an impact slider 2 and a positioning shaft 3, the impact slider 2 is sleeved on the sliding rod 1 and slides with the sliding rod 1, and the impact slider 2 is cylindrical and the surface of the impact slider 2 is provided with a circular arc-shaped concave surface 8, the arc-shaped concave surface 8 forms a grip part, the front end of the slide bar 1 is fixed with a knocking block 3, and the rear end of the slide bar 1 is provided with threads , the stopper 6 is socketed with the slide bar 1 and fixed on the slide bar 1 through the compression nut 9, the knocking block 3 is in the shape of a truncated cone, the positioning shaft 4 is a stepped shaft with a large front and a small rear, and the stepped surface on the positioning shaft 4 An annular percussion force transmission surface 5 is formed. The outer diameter of the percussion force transmission surface 5 is greater than the inner diameter of the oil-free bearing inner ring and less than or equal to the outer diameter of the oil-free bearing outer ring. The large-diameter end of the positioning shaft 4 is fixed with a The dismantling head 7 that positioning shaft 4 is one, dismounting head 7 is regular hexagon, the end of dismantling head 7 is fixed with connecting screw rod, and connecting screw rod is threadedly connected with the minor diameter end of knocking block 3.

When the utility model is used to install the oil-free bearing, the positioning shaft 4 is inserted into the bearing hole of the oil-free bearing and the knocking force transmission surface 5 is in contact with the end face of the oil-free bearing, and then the impact slider 2 is slid back and forth to hit and knock Block 3 to generate knocking force, the generated knocking force will act on the outer end surface of the oil-free bearing through the knocking force transmission surface 5, until the oil-free bearing is pushed into the bearing mounting hole to complete the installation of the oil-free bearing, Instead, when the utility model is used to disassemble the oil-free bearing, the positioning shaft 4 is inserted into the bearing hole of the oil-free bearing and the knocking force transmission surface 5 is contacted with the end face of the oil-free bearing, and then slides back and forth to hit the slider 2 Hit the knocking block 3 to generate knocking force, and the generated knocking force will act on the outer end surface of the oil-free bearing through the knocking force transmission surface 5 until the oil-free bearing is pushed out of the bearing mounting hole to complete the oil-free bearing It is very convenient to disassemble and use, and it is very labor-saving.

Claims (7)

1. An oil-free bearing dismounting tool, characterized in that it includes a sliding rod (1) and an impact slider (2), and the impact slider (2) is sleeved on the sliding rod (1) and the sliding rod ( 1) Sliding fit, the front end of the slider (1) is fixed with a knocking block (3), the front end of the knocking block (3) is fixed with a positioning shaft (4), and the positioning shaft (4) is front big and rear Small stepped shaft, the stepped surface on the positioning shaft (4) forms a ring-shaped knocking force transmission surface (5), and the outer diameter of the knocking force transmission surface (5) is larger than the inner diameter of the inner ring of the oil-free bearing , less than or equal to the outer diameter of the outer ring of the oil-free bearing, and a stopper (6) is provided at the rear end of the slide rod (1). 2. An oil-free bearing dismounting tool according to claim 1, characterized in that the knocking block (3) is in the shape of a truncated cone, and the small diameter end of the knocking block (3) is in contact with the positioning shaft (4 ) The large diameter end is fixedly connected. 3. An oil-free bearing dismounting tool according to claim 1, characterized in that, the large-diameter end of the positioning shaft (4) is provided with a connecting screw, and the connecting screw and the knocking block (3) Small diameter end threaded connection. 4. An oil-free bearing dismounting tool according to claim 3, characterized in that a dismounting head (7) is provided between the positioning shaft (4) and the connecting screw, and the dismounting head (7) is positive Hexagonal, one end of the dismounting head (7) is fixedly connected with the large-diameter end of the positioning shaft (4), and the other end is fixedly connected with the connecting screw rod. 5. The oil-free bearing dismounting tool according to claim 1, characterized in that, the impact slider (2) is cylindrical. 6. An oil-free bearing dismounting tool according to claim 5, characterized in that, the surface of the impact slider (2) is provided with a circular arc-shaped concave surface (8), and the arc-shaped concave surface ( 8) Form the grip. 7. An oil-free bearing dismounting tool according to claim 1, characterized in that, the rear end of the sliding rod (1) is provided with threads, and the stopper (6) is socketed with the sliding rod (1) and It is fixed on the slide rod (1) by the compression nut (9).