CN215942607U

CN215942607U - Barrel-shaped grinding wheel for improving surface roughness of gear

Info

Publication number: CN215942607U
Application number: CN202122589319.0U
Authority: CN
Inventors: 毛美琴; 华明圣; 侯本松
Original assignee: Nanjing Ruixin Intelligent Manufacturing Co ltd
Current assignee: Nanjing Ruixin Intelligent Manufacturing Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-04
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a barrel-shaped grinding wheel for improving the surface roughness of a gear, which belongs to the technical field of barrel-shaped grinding wheels and comprises a grinding wheel body, wherein a plurality of chip removal holes are formed in the right end opening of the grinding wheel body; in actual grinding, the end part of the special-shaped grinding wheel body forms an opening shape, and most of abrasive dust is thrown out during longitudinal advancing and retreating of work, so that the surface roughness of the convex surface of the gear is greatly improved; the grinding wheel body is cylindrical, the diameter of the cross section and the wall thickness can be set into different models during casting, and the diameter and the depth of the chip removal hole are changed along with the change of the diameter and the depth of the chip removal hole, so that the grinding wheel is suitable for different workpieces.

Description

Barrel-shaped grinding wheel for improving surface roughness of gear

Technical Field

The utility model relates to the technical field of barrel-shaped grinding wheels, in particular to a barrel-shaped grinding wheel for improving the surface roughness of a gear.

Background

In the past, the traditional gear machining adopts the process flow of gear milling, heat treatment and gear grinding. However, the final process of lapping only improves the surface roughness of the tooth surface but cannot eliminate the deformation caused by heat treatment, and particularly, people put higher requirements on gear transmission, namely, on the aspects of smooth transmission, transmission noise, tooth surface roughness, energy consumption, environmental pollution and the like. Therefore, the process flow of gear milling, heat treatment and gear grinding becomes the development direction of the gear machining process in the future. The grinding of spiral bevel gears is the most difficult one to control in gear type. The tooth surfaces on two sides of the tooth socket are different and are respectively a concave surface and a convex surface, so that when a barrel-shaped grinding wheel is used for grinding, even if the grinding processing three elements are properly selected, the grinding effects on the two surfaces are obviously different, the tooth grinding process of the spiral bevel gear is mainly used for processing precision bevel gears such as aviation gears and the like, the spiral bevel gear pair is more and more applied in recent years in vehicles and agricultural products, and the gear grinding process can be higher in precision and lower in meshing noise than the tooth grinding process. The contact area of the product is controlled, the side clearance is easy, and the prior process method for grinding the spiral bevel gear comprises a forming method and a generating method. In either case, the workpiece box is indexed, and the grinding wheel is rotated and fed longitudinally. The result is that when the grinding wheel enters the gear groove of the workpiece, the outer surface and the inner surface of the grinding wheel grind the concave surface and the convex surface of the arc tooth respectively and simultaneously. The abrasive dust generated when the outer surface is ground is dropped during rotation of the grinding wheel, while the abrasive dust generated in the grinding convex surface of the inner surface can be partially thrown out when the grinding wheel is removed, but the majority of the abrasive dust is still in the barrel-shaped grinding wheel. When other grinding is performed, the generated abrasive dust influences the surface roughness of the newly ground convex surface, so that the surface roughness of the newly ground convex surface is different from that of the newly ground concave surface. The reduction of the precision grade of the gear is directly influenced, and a barrel-shaped grinding wheel for improving the surface roughness of the gear is proposed for solving the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a barrel-shaped grinding wheel for improving the surface roughness of a gear, so as to solve the problems in the background technology.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an improve gear roughness's barrel type emery wheel, includes the emery wheel body, a plurality of chip removal holes have been seted up to emery wheel body right-hand member port department, emery wheel body fixedly connected with body seat, the emery wheel body is connected with body seat integral type, the screw thread is provided with a plurality of second screws on the body seat, second screw bottom threaded connection has the ring flange, be equipped with the inner disc on the body seat, the screw has run through first screw on the inner disc, first screw bottom screw thread runs through the ring flange to threaded connection has the main shaft, the emery wheel body rotates the laminating and is connected with the work piece.

Preferably, the number of the chip removal holes is four to six, and the chip removal holes are uniformly distributed along the end face of the right end of the grinding wheel body.

Preferably, the grinding wheel body is cylindrical, and an open slot is formed in the end face of the right end of the grinding wheel body.

Preferably, a plurality of screw holes are formed in the surfaces of the body seat and the flange plate, and the screw holes are connected with second screws in a threaded mode.

Preferably, the end part of the right end of the main shaft is fixedly provided with a conical head, the conical head is in threaded connection with a first screw, a gasket is sleeved on the first screw, and the gasket is arranged on the inner wall of the inner disc.

Preferably, the workpiece is provided with a plurality of teeth, the arc-shaped outer wall of each tooth is a convex surface, the arc-shaped inner wall of each tooth is a concave surface, the convex surfaces are connected with the inner wall of the grinding wheel body in an attaching mode, and the concave surfaces are connected with the outer surface of the grinding wheel body in an attaching mode.

Compared with the prior art, the utility model has the beneficial effects that:

1. the chip removal holes with different numbers are added at the grinding end of the traditional barrel-shaped grinding wheel, so that the problem of discharging a large amount of chips in the grinding process is solved, and the surface roughness of the convex surface is greatly improved;

2. in actual grinding, the end part of the special-shaped grinding wheel body forms an opening shape, and most of abrasive dust is thrown out during longitudinal advancing and retreating of work, so that the surface roughness of the convex surface of the gear is greatly improved;

3. the grinding wheel body is cylindrical, the diameter of the cross section and the wall thickness can be set into different models during casting, and the diameter and the depth of the chip removal hole are changed along with the change of the diameter and the depth of the chip removal hole, so that the grinding wheel is suitable for different workpieces.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the connection between the grinding wheel body and the spindle according to the present invention.

FIG. 3 is a schematic view of an open groove of the grinding wheel body according to the present invention.

FIG. 4 is a schematic view of a structural workpiece according to the present invention.

In the figure: 1. a grinding wheel body; 11. chip removal holes; 12. an open slot; 2. a first screw; 21. a gasket; 3. a body seat; 31. a screw hole; 32. an inner disc; 4. a flange plate; 5. a second screw; 6. a main shaft; 61. a conical head; 7. a workpiece; 71. teeth; 711. a convex surface; 712. and (4) a concave surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1-4, the utility model provides a barrel-shaped grinding wheel for improving the surface roughness of a gear, which comprises a grinding wheel body 1, wherein a plurality of chip removal holes 11 are formed at the right end opening of the grinding wheel body 1 for throwing away grinding chips, the grinding wheel body 1 is fixedly connected with a body base 3, the grinding wheel body 1 and the body base 3 are integrally connected, the grinding wheel body 1 and the body base 3 can form a whole body with high structural strength, a plurality of second screws 5 are arranged on the body base 3 in a threaded manner, the bottom ends of the second screws 5 are connected with a flange plate 4 in a threaded manner, so that the body base 3 and the flange plate 4 can form a whole body, an inner disc 32 is arranged on the body base 3, a first screw 2 penetrates through the inner disc 32 in a threaded manner, the bottom end of the first screw 2 penetrates through the flange plate 4 in a threaded manner, and is connected with a main shaft 6 in a threaded manner, so that the grinding wheel body 1, the body base 3 and the flange plate 4 can be fixedly mounted on the main shaft 6 for grinding operation, the grinding wheel body 1 is connected with a workpiece 7 in a rotating and attaching mode, and the grinding wheel body 1 grinds the surface of the workpiece 7.

Furthermore, the number of the chip removal holes 11 is four to six unequal holes, and the chip removal holes are uniformly distributed along the end face of the right end of the grinding wheel body 1, so that the chips can be uniformly thrown out.

Further, the grinding wheel body 1 is in a cylindrical shape, the cross section diameter and the wall thickness are arranged in a plurality of modes through sintering, the diameter and the depth of the chip removal hole 11 are arranged in a plurality of modes through sintering, so that different grinding wheel bodies 1 can be arranged according to the tool number and the gear pressure angle, the depth of the chip removal hole 11 is longer than the longest grinding thickness, an open groove 12 is formed in the end face of the right end of the grinding wheel body 1, the open groove can be longitudinally moved in and out of the main shaft 6 in the working process, most of grinding chips can be supplemented and thrown out, and the surface roughness of the gear workpiece 7 is greatly improved.

Further, a plurality of screw holes 31 are formed in the surfaces of the body seat 3 and the flange plate 4, and the screw holes 31 are connected with second screws 5 in a threaded manner, so that the body seat 3 and the flange plate 4 are fixedly connected into a whole.

Further, a conical head 61 is fixedly arranged at the end part of the right end of the main shaft 6, the conical head 61 is in threaded connection with the first screw 2, a gasket 21 is sleeved on the first screw 2, and the gasket 21 is arranged on the inner wall of the inner disc 32, so that the whole body consisting of the grinding wheel body 1, the body seat 3 and the flange plate 4 can be fixedly arranged on the main shaft 6, and grinding work can be carried out.

Further, a plurality of teeth 71 are arranged on the workpiece 7, the arc-shaped outer wall of each tooth 71 is a convex surface 711, the arc-shaped inner wall of each tooth 71 is a concave surface 712, the convex surfaces 711 are attached to the inner wall of the grinding wheel body 1, and the concave surfaces 712 are attached to the outer surface of the grinding wheel body 1, so that the convex surfaces 711 and the concave surfaces 712 of the workpiece 7 can be ground simultaneously through the grinding wheel body 1, and the surface roughness is improved.

The working principle is as follows: the grinding wheel body 1 and the body seat 3 are cast into a whole, then the body seat 3 is connected to the flange plate 4 by fastening a second screw 5, so that the whole grinding wheel can be formed, the grinding wheel body 1 is in a cylindrical shape, four to six unequal chip removal holes 11 are formed in the right end port of the grinding wheel body 1, the diameter and the wall thickness of the cross section can be changed when the grinding wheel body 1 is sintered according to different pressure angles of workpieces 7, the grinding wheel body 1 is set into different models, the diameter and the depth of the chip removal holes 11 are changed along with the change, the depth of the chip removal holes 11 is longer than the maximum grinding thickness, so that the grinding wheel body 1, the body seat 3 and the flange plate 4 are fixedly installed on a main shaft 6 of a machine tool by using a first screw 2, a balance test is performed after the whole is formed, meanwhile, an open slot 12 is formed in the right end port of the grinding wheel body 1 according to the tool number and the gear pressure angle, when the grinding wheel is used, a plurality of arc-shaped bevel gear teeth 71 are arranged on a workpiece 7, when the convex surfaces 711 of the arc-shaped bevel gear teeth 71 of the grinding wheel body 1 are ground on the inner side of the grinding wheel body 1, most of grinding chips are thrown out of the grinding wheel body 1, so that the surface roughness of the convex surfaces 711 of the arc-shaped bevel gear teeth is improved, the concave surfaces 712 of the tooth teeth 71 on the outer side of the grinding wheel body 1 are ground, the grinding chips are directly thrown out of the grinding wheel body 1, the grinding part of the grinding wheel body 1 is accurately corrected through a host machine corrector before grinding, the grinding of the whole gear wheel part is completed through the circulating action of a machine tool, and the special-shaped grinding wheel body 1 is actually ground because the end part forms an open shape, most of the grinding chips are replenished and thrown out in the longitudinal advancing and retreating process of work, so that the surface roughness of the convex surfaces 711 of the arc-shaped bevel gear teeth 71 of the gear workpiece 7 is greatly improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides an improve gear surface roughness's bucket type emery wheel, includes emery wheel body (1), its characterized in that: a plurality of chip removal holes (11) have been seted up to emery wheel body (1) right-hand member port department, emery wheel body (1) fixedly connected with body seat (3), emery wheel body (1) is connected with body seat (3) integral type, the screw thread is provided with a plurality of second screw (5) on body seat (3), second screw (5) bottom threaded connection has ring flange (4), be equipped with inner disc (32) on body seat (3), the screw thread runs through first screw (2) on inner disc (32), first screw (2) bottom screw thread runs through ring flange (4) to threaded connection has main shaft (6), emery wheel body (1) rotates the laminating and is connected with work piece (7).

2. The barrel type grinding wheel for improving the surface roughness of the gear according to claim 1, wherein the number of the chip removal holes (11) is four to six unequal holes and is uniformly distributed along the right end face of the grinding wheel body (1).

3. The barrel type grinding wheel for improving the surface roughness of the gear according to claim 1, wherein the grinding wheel body (1) is barrel-shaped, and an open groove (12) is formed at the right end face of the grinding wheel body (1).

4. The barrel-shaped grinding wheel for improving the surface roughness of the gear according to claim 1, wherein a plurality of screw holes (31) are formed in the surface of the body seat (3) and the surface of the flange plate (4), and the screw holes (31) are internally threaded with the second screws (5).

5. The barrel type grinding wheel for improving the surface roughness of the gear according to claim 1, wherein a conical head (61) is fixedly arranged at the right end of the main shaft (6), the conical head (61) is in threaded connection with the first screw (2), a gasket (21) is sleeved on the first screw (2), and the gasket (21) is arranged on the inner wall of the inner disc (32).

6. The barrel-shaped grinding wheel for improving the surface roughness of the gear according to claim 1, wherein a plurality of teeth (71) are arranged on the workpiece (7), the arc-shaped outer wall of each tooth (71) is a convex surface (711), the arc-shaped inner wall of each tooth (71) is a concave surface (712), the convex surfaces (711) are attached to the inner wall of the grinding wheel body (1), and the concave surfaces (712) are attached to the outer surface of the grinding wheel body (1).