WO2018205243A1

WO2018205243A1 - Horizontal electron beam processing system for gear surface

Info

Publication number: WO2018205243A1
Application number: PCT/CN2017/084069
Authority: WO
Inventors: 李晖; 许洪斌; 胡建军; 杨岩; 刘妤
Original assignee: 重庆理工大学
Priority date: 2017-05-11
Filing date: 2017-05-12
Publication date: 2018-11-15
Also published as: WO2018205241A1

Abstract

Disclosed is a horizontal electron beam processing system for a gear surface, mainly comprising a processing platform installed inside a vacuum chamber (8). By means of the forward and reverse rotation of a ratchet (201), the relative position of each gear workpiece (5) to be processed and an electron beam can be flexibly adjusted, and a fixture system with a rational and effective design is very important for assisting with the processing of a surface of the gear workpiece with the electron beam.

Description

Horizontal gear surface electron beam processing system

Technical field

This invention relates to the field of machining, and in particular to a horizontal gear surface electron beam processing system.

Background technique

Gears are the most widely used and widely used mechanical transmission parts in modern machinery and equipment. The gear market of China's 12th Five-Year Plan will reach 250 billion yuan, and the gear industry has become the largest industry in China's mechanical infrastructure. The design and manufacturing level of gears and gear transmissions will directly affect the performance and quality of mechanical products. It is an important support for the development of strategic emerging industries in China and a symbolic industry that has transformed from a manufacturing power to a manufacturing power. Gear failure is mostly generated from the surface. The statistical analysis of the Japan Mechanical Society shows that the gear transmission failure caused by the tooth surface failure exceeds 70%. Therefore, the improvement of the tooth surface performance has become an urgent problem to be solved.

Traditional heat treatment techniques have serious problems such as serious pollution, long cycle, large deformation or difficulty in further improvement. The use of electron beam for surface modification of the gear has the advantages of small deformation, high efficiency, and pure surface quality. It can directly and effectively improve the surface roughness and texture of the material, and can handle small diameter holes and narrowness that cannot be completed by conventional processing. Special surface types such as slits, electron beam surface modification technology has been widely used in aviation, aerospace, electronics, instrumentation and other fields, such as various micro-components, localized strengthening components, microelectronic devices, large-scale integrated circuits. Production and repair, etc. It is very suitable for surface modification of gears. In order to improve the quality and efficiency of electron beam processing of gear workpieces, it is very important to design a reasonable and effective fixture system to assist the electron beam to surface treatment of gear workpieces.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems in the prior art and to provide a horizontal gear surface electron beam processing system.

The technical solution adopted for achieving the object of the present invention is such a horizontal gear surface electron beam processing system, which comprises a processing platform mounted inside a vacuum chamber.

The vacuum chamber includes a body, a transparent end cap, a sealing cover I, a sealing cover II, and a sealing cover III.

The body is a hollow cylinder. Electron beam The beam source system and the sealing cover I are sealed. Large holes are formed on both sides of the body. The two large holes are respectively sealed by a sealing cover II and a sealing cover III. The upper end of the body has a vacuuming hole. In operation, the electron beam source system emits a strong current pulsed electron beam to the body, and the processed gear workpiece is processed.

The lower end of the body is fixed to the cabinet.

The processing platform includes a support platform mounted inside the body. The periphery of the support platform faces the transparent end cover, the sealing cover I, the sealing cover II and the sealing cover III, respectively. The support platform has a central through hole on which a rotary platform bearing is mounted. The outer ring of the rotary platform bearing is fixed on the support platform. The inner ring of the rotary platform bearing is free to rotate. The inner ring of the rotary platform bearing is mounted with a rotating platform.

The rotating platform has a central through hole. A pawl that cooperates with the ratchet is mounted in the central through hole. The ratchet is mounted on the input shaft II. One end of the input shaft II is connected to the power, and the other end is connected to the sun gear. The sun gear is located above the rotating platform.

Includes several gear mounting systems. Each gear mounting system mainly includes a gear clamp rotating support and a gear clamp support device. The gear clamp supporting device comprises a sleeve with an open upper end, a lower end fixed to the rotating platform, and a metal round rod with a lower end insertion sleeve and an upper end hinge connection block. The connecting block has a circular hole. The circular hole is for the workpiece shaft to pass through. One end of the workpiece shaft is connected to the power output end of the universal joint, and the other end is connected with the gear workpiece to be processed. The power input end of the universal joint is a metal rod. The lower end of the metal rod is mounted on the upper surface of the rotating platform through a bearing. The metal rod is mounted with a planetary gear, which can rotate as the planetary gear rotates. The planetary gears of several gear mounting systems are evenly distributed around the sun gear to form a planetary gear train.

Further, the support platform is suspended in the vacuum chamber. A motor that drives the input shaft II to rotate is mounted below the support platform.

Further, the axes of the rotating platform, the ratchet and the sun gear coincide. The axis of the rotating platform intersects perpendicularly to the axis of the body.

The technical effect of the invention is undoubted: the use of electron beam equipment to modify the surface of the part is one of the new technical directions of modern machinery manufacturing, which can improve product quality, with small deformation of parts, pure surface quality, short time, environmental protection, etc. Advantages, the surface electron beam processing equipment for gear development can be extended to various fields such as conical workpieces and materials research specimens. Therefore, the equipment has a wide range of application and application prospects. Enough to create significant economic benefits.

DRAWINGS

Figure 1 is a structural view of a vacuum chamber of the present invention;

Figure 2 is a structural view of the inside of the vacuum chamber of the present invention;

Figure 3 is a structural view of a processing platform of the present invention;

Figure 4 is a schematic diagram of the mechanism of the processing platform of the present invention.

In the figure: rotating platform 1, gear clamp support device 2, universal joint 3, gear clamp rotary support 4, gear workpiece 5 to be processed, workpiece shaft 5, planetary gear 6, rotary platform bearing 7, vacuum chamber 8, Sun gear 9, input shaft 10, planetary gear shaft 11, ratchet 201, input shaft II202, pawl 203, input shaft bearing 204, input shaft I205, body 801, electron beam source system 802, sealing cover I803, sealing cover II804 , sealing cover III805, vacuuming hole 806, cabinet 808.

detailed description

The invention is further illustrated by the following examples, but it should not be understood that the scope of the invention described above is limited to the following examples. Various changes and modifications may be made without departing from the spirit and scope of the invention.

A horizontal gear surface electron beam processing system is characterized in that it comprises a processing platform mounted inside the vacuum chamber 8.

The vacuum chamber 8 includes a body 801, an electron beam source system 802, a sealing cover I803, a sealing cover II804, and a sealing cover III805.

The body 801 is a hollow cylinder. Both ends of the body 801 are respectively blocked by an electron beam source system 802 and a sealing cover I803. The body 801 has large holes on both sides thereof. The two large holes are respectively sealed by a sealing cover II804 and a sealing cover III805. The upper end of the body 801 has a vacuuming hole 806. In operation, the electron beam source system 802 transmits a strong current pulsed electron beam to the body 801, and the gear workpiece 5 to be processed is processed.

The lower end of the body 801 is fixed to the cabinet 808.

The processing platform includes a support platform mounted inside the body 801. The periphery of the support platform faces the electron beam source system 802, the sealing cover I803, the sealing cover II804, and the sealing cover III805, respectively. The support platform has a central through hole on which a rotary platform bearing 7 is mounted. The outer ring of the rotary platform bearing 7 is fixed at the support level On the stage. The inner ring of the rotary table bearing 7 is free to rotate. The inner ring of the rotary platform bearing 7 is mounted with a rotary table 1. Preferably, the support platform is suspended in the vacuum chamber 8 in a suspended manner. A motor that drives the input shaft II202 to rotate is mounted below the support platform.

The rotary platform 1 has a central through hole. A pawl 203 that cooperates with the ratchet 201 is mounted in the central through hole. The ratchet 201 is mounted on the input shaft II202. The input shaft II202 is connected to the power at one end and the sun gear 9 at the other end. The sun gear 9 is located above the rotating platform 1. Preferably, the axes of the rotating platform 1, the ratchet 201 and the sun gear 9 coincide. The axis of the rotating platform 1 intersects perpendicularly to the axis of the body 801.

Includes several gear mounting systems. Each of the gear mounting systems mainly includes a gear clamp rotation support 4 and a gear clamp support device 2. The gear clamp supporting device 2 includes a sleeve 21 having an open upper end, a lower end fixed to the rotary table 1, and a metal round rod 22 having a lower end insertion sleeve 21 and an upper end hinge connection block 23. Preferably the support device 2 is a cylinder and the sleeve 21 is a hydraulic cylinder. The height of the metal round bar 22 is adjustable and can be freely rotated. The connecting block 23 has a circular hole. The circular hole is passed through the workpiece shaft 5. The workpiece shaft 5 is a round rod which is free to slide and rotate within the circular hole. One end of the workpiece shaft 5 is connected to the power output end of the universal joint 3, and the other end is mounted with the gear workpiece 5 to be processed. The power input end of the universal joint 3 is a metal rod. The lower end of the metal rod is mounted on the upper surface of the rotating platform 1 through a bearing. The metal rod is mounted with a planetary gear 6 which can rotate with the planetary gear 6. And turn. The planetary gears 6 of a number of gear mounting systems are evenly distributed around the sun gear 9 to form a planetary gear train.

In operation, according to the working principle of the ratchet 201, the pawl can only be driven in one direction. At this time, the ratchet 201 drives the rotary table 1 to rotate, and all the gear mounting systems rotate together. That is to achieve "revolution." When the ratchet 201 rotates in the reverse direction, the pawl does not rotate. At this time, only the sun gear rotates, and each planetary gear rotates, thereby driving each gear workpiece 5 to be processed on the gear mounting system to rotate.

In summary, by the forward and reverse rotation of the ratchet 201, the relative position of each gear workpiece 5 to be processed and the electron beam can be flexibly adjusted. The properly designed fixture system has a gear workpiece surface treatment for the auxiliary electron beam. Very important meaning.

Claims

A horizontal gear surface electron beam processing system, comprising: the processing platform installed inside the vacuum chamber (8);

The vacuum chamber (8) includes a body (801), an electron beam source system (802), a sealing cover I (803), a sealing cover II (804), and a sealing cover III (805);

The body (801) is a hollow cylinder; two ends of the body (801) are respectively blocked by an electron beam source system (802) and a sealing cover I (803); two of the body (801) There are large holes in the side; the two large holes are respectively sealed by the sealing cover II (804) and the sealing cover III (805); the upper end of the body (801) has a vacuuming hole (806); The electron beam source system (802) emits a strong current pulsed electron beam to the body (801), and the processed gear workpiece (5) is processed;

The lower end of the body (801) is fixed to the cabinet (808).

The processing platform includes a support platform mounted inside the body (801); the support platform is adjacent to the electron beam source system (802), the sealing cover I (803), the sealing cover II (804) and the sealing cover III (805); the support platform has a central through hole, the upper surface of which is mounted with a rotating platform bearing (7); the outer ring of the rotating platform bearing (7) is fixed on the supporting platform; the rotating platform bearing (7) The inner ring is free to rotate; the inner ring of the rotating platform bearing (7) is mounted with a rotating platform (1);

The rotating platform (1) has a central through hole; a pawl (203) fitted with a ratchet (201) is mounted in the central through hole; the ratchet (201) is mounted on the input shaft II (202); and the input shaft II ( 202) one end is connected to the power, the other end is connected to the sun gear (9); the sun gear (9) is located above the rotating platform (1);

The utility model comprises a plurality of gear mounting systems; each gear mounting system mainly comprises a gear clamp rotating support (4) and a gear clamp supporting device (2); the gear clamp supporting device (2) comprises an upper end open and a lower end fixed in rotation a sleeve (21) on the platform (1), and a metal round rod (22) having a lower end insertion sleeve (21) and an upper hinge connection piece (23); the connection block (23) having a circular hole; The circular hole is passed through the workpiece shaft (5); the workpiece shaft (5) is connected at one end to the power output end of the universal joint (3), and the other end is mounted with a gear workpiece (5) to be processed; the universal joint ( 3) The power input end is a metal rod. The lower end of the metal rod is mounted on the upper surface of the rotating platform (1) through a bearing. This metal rod is mounted with a planetary gear (6), which can be used with the planetary gear (6). Rotating and rotating; the planetary gears (6) of several gear mounting systems are evenly distributed around the sun gear (9) to form a planetary gear train.
A platform suitable for electron beam processing of a rotating body part according to claim 2, wherein the supporting platform is suspended in the vacuum chamber (8); the driving input shaft is mounted below the supporting platform. II (202) rotating motor.
A platform suitable for electron beam processing of a rotating body part according to claim 1, 2 or 3, characterized in that the axes of the rotating platform (1), the ratchet (201) and the sun gear (9) coincide The axis of the rotating platform (1) intersects perpendicularly to the axis of the body (801).