CN110947814B

CN110947814B - Roller type bearing spinning necking device and using method thereof

Info

Publication number: CN110947814B
Application number: CN201911249948.XA
Authority: CN
Inventors: 刘佳; 吴永林; 于竹; 王环
Original assignee: AVIC Sac Commercial Aircraft Co Ltd
Current assignee: AVIC Sac Commercial Aircraft Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2022-02-18
Anticipated expiration: 2039-12-09
Also published as: CN110947814A

Abstract

The invention relates to a roller type bearing spinning closing device which comprises a tool handle, a spinning head, an embedded bolt, a bolt rod, a circular frame seat and a guide shaft, wherein the spinning head is provided with a plurality of bolt holes, the bolt holes penetrate through the spinning head, the bolt holes are distributed in an equal angle mode by taking a central shaft of the spinning head as an axis, the bolt holes and the horizontal plane form an angle of 25 degrees, the tool handle is perpendicular to the spinning head and located in the middle of the spinning head, the guide shaft is a cylinder, the outer circle diameter of the guide shaft is matched with the size of an inner hole of a bearing to be machined, and the length of the guide shaft is matched with the thickness of the bearing to be machined. The guide shaft is a cylinder, the diameter of the outer circle of the guide shaft is matched with the size of the inner hole of the bearing to be processed, and the length of the guide shaft is matched with the thickness of the bearing to be processed. The invention has simple structure, can be self-made and reformed, is simple and convenient to produce, has simple processing mode, reduces the abrasion of the closing device and effectively improves the service life of the closing device.

Description

Roller type bearing spinning necking device and using method thereof

Technical Field

The invention relates to the technical field of closing-up of an assembly bearing of an small aviation component, in particular to a roller type bearing spinning closing-up device and a using method thereof.

Background

At present, the small component mounting bearings in the aviation manufacturing industry are very many, the processing amount of the closed-up bearing is very large, and the closed-up form of the existing bearing is mostly a manual closed-up or a mechanical double-vertical wheel disc closed-up. The manual closing-in has great requirements on the workload of workers, high technical requirements, difficult guarantee of processing precision and high qualification rate. And the efficiency of closing up of two perpendicular rim plates is poor, easily appears blocking in the operation, and the precision is unstable, easily causes the mar around the V groove.

Along with the increase of the number of the bearing pieces and the variety of the bearings, the manual mode and the rolling mode greatly increase the processing time, reduce the manufacturing efficiency and ensure the surface quality difficultly. The defects of uneven pressure and poor uniformity exist in manual processing, the double-vertical wheel disc rolling is quick in wear of the closing-in device, poor in quality assurance and prone to causing scratches, and the defects that in actual production application, the two defects are too much and too little exist. With the increasing world production value of the aviation industry in China, the era of increasing the competitiveness is a chance that technicians continue to explore deeply.

Disclosure of Invention

In order to solve the problems, the roller type bearing spinning closing device can greatly improve the production efficiency, reduce the abrasion of the closing device, reduce the scratches on the periphery of the bearing seat, reduce the manufacturing difficulty and effectively ensure the requirements on the precision and the efficiency of parts.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a roller type bearing spinning closing device comprises a tool handle, a spinning head, an embedded bolt, a bolt rod, a circular frame seat and a guide shaft; the tool handle is vertically fixed in the middle position above the spinning head, a plurality of bolt holes are arranged on the side surface of the spinning head, the bolt holes and the horizontal plane form an angle of 25 degrees, the bolt holes penetrate through the spinning head, and the bolt holes are distributed at equal angles by taking the central shaft of the spinning head as the axis; the spinning head is provided with a guide shaft below, the guide shaft and the spinning head are arranged in a shrinkage fit manner and are in interference fit, and a circular frame seat is arranged below the spinning head.

In the roller type bearing spinning closing device, the number of the bolt holes is three or five or seven.

The roller type bearing spinning closing device is characterized in that the guide shaft is a cylinder, the diameter of the outer circle of the guide shaft is matched with the size of an inner hole of a bearing to be machined, and the length of the guide shaft is matched with the thickness of the bearing to be machined.

A use method of a roller type bearing spinning closing device comprises the following steps:

1) placing the bearing on a circular frame seat, and checking the rotation condition of the bearing;

2) fixing a circular frame seat provided with a bearing on a radial drilling machine, clamping a tool handle by a drill chuck on the drilling machine, and locking a large arm of the drilling machine;

3) properly adjusting the rotating speed to 50-80 r/min;

4) manually adjusting the feeding of a radial drilling machine, continuously applying pressure to the drilling machine through a tool handle, and enabling a guide shaft to penetrate through the inner ring of the bearing until the surface of the guide shaft is completely attached to the upper surface of the circular frame seat; meanwhile, the bolt rod is contacted with the periphery of the V-shaped groove of the bearing until the flanging position of the bolt rod is completely attached to the chamfer angle of the part;

5) and performing the same operation on the other side of the bearing by turning the part over, and performing die change operation.

The invention has the beneficial effects that:

1. the embedded bolt rod replaces a roller, so that the structure manufacturing difficulty is reduced, the self-manufacture is easy, and the cost is low.

2. The invention uses the roller with the angle to spin, only contacts with the flanging surface of the V-shaped groove, and spins smoothly, thereby ensuring the surface precision and avoiding unnecessary friction and scratch.

3. The roller type bearing spinning mouth closing device is matched with the swing arm drilling machine, so that the edge of the base placed in the bearing is pressed to extend towards the inner side of the bearing, the bearing is effectively and firmly sealed in the base, the end face is extruded to be flat, uniform and smooth, the mouth closing device is simple to manufacture, strong in practicability, simple in processing technology, good in part surface quality and good in effect. The method greatly improves the processing efficiency of the bearing closing in, improves the processing precision, reduces the manufacturing difficulty and the processing technical operability of the closing in device, avoids repeated clamping and improves the utilization rate of a machine tool. The necking-in device can meet the requirements of most of bearings on installation and necking-in and has a wide range.

4. The invention has simple structure, can be self-made and reformed, is simple and convenient to produce, has simple processing mode, reduces the abrasion of the closing device and effectively improves the service life of the closing device. The straight cylinder tool handle satisfies most drilling machine clamping requirement, and the practicality is wide, adds to hold firmly.

5. The guide shaft is matched with the inner hole of the bearing, so that the precision is high and the guidance quality is good. The processing process is short, the manufacturing rate of parts is high, and the production quantity is increased. The invention has single-side contact, avoids the friction between the inner side and the root and avoids the scratch damage. The cylindrical surface is spun, the quality of the closing surface is good, and the transition is uniform. The closing-in device is simple and easy to operate, improves the efficiency, the precision and the processing efficiency, saves the processing cost and generates considerable economic benefit.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a bottom view of the bolt shank of the present invention inserted into a tap head.

Fig. 3 is an isometric schematic of the present invention.

The meanings of the symbols in the figures: the tool comprises a tool handle 1, a spinning head 2, an embedded bolt 3, a bolt rod 4, a circular frame seat 5, a longitudinal reinforcement 6, a bearing 6 and a guide shaft 7.

Detailed Description

The present invention is described in further detail below, but is not to be construed as being limited thereto.

Example 1

A roller type bearing spinning closing device is shown in figures 1-3 and comprises a tool handle 1, a spinning head 2, an embedded bolt 3, a bolt rod 4, a circular frame base 5 and a guide shaft 7, wherein the tool handle 1 is vertically fixed in the middle position above the spinning head 2, three bolt holes are formed in the side face of the spinning head 2, the bolt holes and the horizontal plane form an angle of 25 degrees, the bolt holes penetrate through the spinning head 2, and the bolt holes are distributed at equal angles by taking the central shaft of the spinning head 2 as the axis; a guide shaft 7 is arranged below the spinning head 2, the guide shaft 7 and the spinning head 2 are arranged in a shrinkage fit manner, and are in interference fit, and the joint is sealed by glue; a circular frame seat 5 is arranged below the spinning head 2.

The guide shaft 7 is a cylinder, the diameter of the outer circle of the guide shaft 7 is matched with the size of the inner hole of the bearing to be processed, and the length of the guide shaft 7 is matched with the thickness of the bearing to be processed.

The material of the mouth closing device is high-hardness and high-wear-resistance hard alloy steel, the hardness is more than 60HRC, and the hardness is guaranteed to be higher than that of a base material of a part to be processed.

According to the different sizes of the V-shaped grooves of the bearing, bolt holes with different sizes and guide shafts 7 with different diameters and heights are manufactured on the spinning head 2.

1) the bearings should be free of damage, corrosion, swarf and other contaminants before and after installation. Unless there is a preload, the inner race can stick or jam during rotation resulting in rejection of the bearing.

Placing the bearing 6 on the circular frame seat 5, and checking the rotation condition of the bearing;

2) the circular frame base 5 with the bearing 6 is fixed on a rocker arm drill, and whether the relative position of the outer ring of the bearing and the circular frame base 5 is correct or not is checked. The bearing 6 should be placed on the shoulder, and the concentricity of the bearing 6 and the circular frame seat 5 should be within 0.25 mm. A tool handle 1 at the upper end of a clamping closing device of a drill chuck on a drilling machine is locked, the drilling machine big arm is locked, the leakage heights of three bolt rods 4 are consistent and are larger than the depth of a V-shaped groove of a part, and the gap between the end surface of a spinning head 2 and a bearing surface after spinning is ensured to be larger than 1 mm.

3) The rotation speed is properly adjusted to 60 r/min.

4) And (4) coating the installation lubricating coating specified in the drawing.

5) Manually adjusting feeding, continuously pressing through a drilling machine, continuously pressing through a tool handle 1 by the drilling machine, and enabling a guide shaft 7 to penetrate through an inner ring of a bearing 6 until the bottom surface of the guide shaft 7 is completely attached to the upper surface of the circular frame base 5; meanwhile, the bolt rod 4 contacts with the periphery of the bearing 6V groove until the flanging part of the bolt rod 6 is completely attached to the part chamfer;

6) checking whether the surface of the bearing outer ring and the part of the bearing seat are enough and correct, and checking whether the bearing inner ring rotates freely without clamping.

7) The excess installed lubricating coating was carefully wiped off to ensure adhesion of the lubricating coating.

8) The same operation is performed by turning the part over on the other side of the bearing 6, performing a die change operation.

The roller type bearing spinning closing device and the using method can effectively reduce the time of manual machining or other rolling closing devices. The necking device has the advantages of simple structure, low manufacturing difficulty and reduction of manufacturing difficulty and cost. The closing device gradually attaches the bearing outer ring and the part chamfer surface by cylindrical spinning, the transition is uniform, and the processing precision and the stability of the product quality are improved. Gaps are reserved among the closing device roller, the bearing inner ring and the root, abrasion is greatly reduced, scratches are closed, the service life of the tool is prolonged, and cost is reduced.

While embodiments and methods of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments and methods without departing from the principles and spirit of the invention, the scope of which is, therefore, defined by the claims and their equivalents.

Claims

1. A roller type bearing spinning closing device is characterized by comprising a tool handle (1), a spinning head (2), an embedded bolt (3), a bolt rod (4), a circular frame seat (5) and a guide shaft (7); the tool handle (1) is vertically fixed in the middle position above the spinning head (2), a plurality of bolt holes are arranged on the side surface of the spinning head (2), the bolt holes and the horizontal plane form an angle of 25 degrees, the bolt holes penetrate through the spinning head (2), and the bolt holes are distributed at equal angles by taking the central shaft of the spinning head (2) as the axis; a guide shaft (7) is arranged below the spinning head (2), the guide shaft (7) and the spinning head (2) are arranged in a shrinkage fit manner and are in interference fit, and a circular frame base (5) is arranged below the spinning head (2);

the bolt holes are three or five or seven;

the guide shaft (7) is a cylinder, the diameter of the outer circle of the guide shaft (7) is matched with the size of the inner hole of the bearing to be processed, and the length of the guide shaft (7) is matched with the thickness of the bearing to be processed.

2. A use method of a roller type bearing spinning closing device is characterized by comprising the following steps:

1) placing the bearing (6) on the circular frame seat (5) of the roller type bearing spinning closing-in device of claim 1, and checking the rotation condition of the bearing;

2) fixing a circular frame seat (5) provided with a bearing (6) on a radial drilling machine, clamping a tool handle (1) by a drill chuck on the drilling machine, and locking a large arm of the drilling machine;

3) properly adjusting the rotating speed to 50-80 r/min;

4) manually adjusting the feeding of a radial drilling machine, continuously applying pressure to the drilling machine through a tool handle (1), and enabling a guide shaft (7) to penetrate through an inner ring of a bearing (6) until the bottom surface of the guide shaft (7) is completely attached to the upper surface of a circular frame seat (5); meanwhile, the bolt rod (4) is in contact with the periphery of the V-shaped groove of the bearing (6) until the flanging part of the bolt rod (4) is completely attached to the part chamfer;

5) the same operation is carried out by turning the part over on the other side of the bearing (6) to carry out the die change operation.