A tooth profile shaping grinding device with a multi-petal structure internal gear

Abstract

The present invention relates to the field of gear processing technology, and in particular to a tooth profile forming grinding device for an internal gear with a multi-petal structure, comprising a machine tool cradle, the machine tool cradle is connected to a turntable of a machine tool, a V-shaped positioning seat is arranged on the upper surface of the machine tool cradle, a fifth locking screw is arranged at the bottom of the machine tool cradle, and is screwed into the positioning seat for connection and fixation, positioning baffles and pressure plates are arranged on both sides of the positioning seat, and a petal tooth mounting seat and a petal tooth connected to the petal tooth mounting seat are arranged on the top of the positioning seat, and are located between the positioning baffle and the pressure plate. The tooth profile forming grinding device for an internal gear with a multi-petal structure can convert the internal gear grinding into external gear grinding when the internal gear is decomposed into multi-petal teeth for grinding, thereby avoiding restrictions on the grinding wheel, significantly increasing the grinding wheel diameter, improving the grinding wheel precision retention, reducing the number of grinding wheel dressing times, and improving the grinding precision of the gear.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, in particular to a tooth profile shaping grinding device for an internal gear with a multi-petal structure. Background Art

[0002] Robot reducers require multiple internal gears, and their cost accounts for more than 30% of the reducer cost. Reducing the manufacturing cost of internal gears and improving their manufacturing accuracy have become the key and bottleneck issues in the manufacturing of robot reducers. At present, the internal gears after quenching can only be processed by grinding and wire cutting, but the wire cutting processing method is very inefficient and costly. The internal gear grinding can only use a very small diameter grinding wheel, which has the problem of fast grinding wheel wear and frequent dressing. This scheme has low grinding efficiency and high gear processing cost, which seriously restricts the wide application of precision internal gears in mechanical transmission. For this reason, we propose a tooth profile forming grinding device with a multi-petal structure internal gear, which decomposes the internal gear into multi-petal fan-shaped segments for grinding to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a tooth profile shaping grinding device having a multi-petal structure internal gear to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tooth forming grinding device with a multi-petal structure internal gear, comprising a machine tool cradle, the machine tool cradle is connected to the turntable of the machine tool, the upper surface of the machine tool cradle is provided with a V-shaped positioning seat, the bottom of the machine tool cradle is provided with a fifth locking screw, which is screwed into the positioning seat for connection and fixation, positioning baffles and pressure plates are respectively provided on both sides of the positioning seat, a petal tooth mounting seat and a petal tooth connected to the petal tooth mounting seat are provided on the top of the positioning seat, and are located between the positioning baffles and the pressure plate, the petal tooth mounting seat and the outer side are provided with a first connecting screw, which is screwed into the petal tooth for connection and fixation, the petal tooth mounting seat and the outside of the petal tooth are detachably provided with a combination tooling, and the combination tooling can connect four groups of petal tooth mounting seats and petal tooth combinations.

[0005] In a preferred embodiment, a pad is provided on the lower surface of the positioning seat.

[0006] In a preferred embodiment, the outer sides of the positioning baffle and the pressure plate are respectively provided with a first locking screw and a second locking screw, which are screwed into the positioning seat for connection and fixation.

[0007] In a preferred embodiment, a third locking screw and a fourth locking screw are respectively provided on both sides of the outer wall and the bottom end of the positioning seat, and are screwed into the petal tooth mounting seat for connection and fixation.

[0008] In a preferred embodiment, the flap tooth also includes a flap tooth connecting plate arranged at the bottom of the flap tooth, and a plurality of threaded holes are arranged on the bottom end surface of the flap tooth connecting plate and penetrate the flap tooth, and a second connecting screw is threaded in the inner cavity of the threaded hole to connect and fix the flap tooth and the flap tooth connecting plate, and a positioning pin hole penetrating the flap tooth is opened on the outer surface of the flap tooth connecting plate, and a first positioning pin is arranged in the inner cavity of the positioning pin hole.

[0009] In a preferred embodiment, the combined tooling includes a mounting base, a combined positioning plate is arranged on one side circumference of the mounting base, a second positioning pin and a third connecting screw are respectively arranged on the outer side of the combined positioning plate, and the second positioning pin and the third connecting screw extend into the mounting base, a coaxial positioning seat is arranged on the outer side of the combined positioning plate, a fourth connecting screw and a third positioning pin are respectively arranged on the outer side of the coaxial positioning seat, and extend into the combined positioning plate for connection and fixation, the four groups of petal tooth mounting seats and petal teeth are arranged in the inner cavity of the combined positioning plate and the coaxial positioning seat for combined splicing, a sixth locking screw is arranged on the outer wall circumference of the combined positioning plate, and is screwed into the petal tooth mounting seat for connection and fixation.

[0010] In a preferred embodiment, a dense bead sleeve is further provided between the coaxial positioning seat and the flap tooth connecting plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the combined tooling can facilitate the decomposition of the internal gear into multi-petal sector segments for precise assembly and disassembly; after the petal tooth mounting seat connected to the petal teeth on the combined tooling are disassembled together, they can be directly installed in the positioning seat on the machine tool cradle and fixed again by the positioning baffle and the pressure plate; when the internal gear is decomposed into multi-petal teeth for grinding, the internal tooth grinding of the internal gear can be converted into external tooth grinding, avoiding restrictions on the grinding wheel, significantly increasing the grinding wheel diameter, improving the grinding wheel accuracy retention, reducing the number of grinding wheel dressing times, and improving the grinding accuracy of the gear; at the same time, under the action of the combined tooling, the internal gear decomposed into multi-petal segments can be re-precisely assembled and docked as petal teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the machine tool cradle in the present invention;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the positioning seat in the present invention;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the flap teeth in the present invention;

[0015] Figure 4 It is a schematic diagram of the top view of the petal tooth in the present invention;

[0016] Figure 5It is a cross-sectional structural schematic diagram of the cooperation between the combined tooling and the flap teeth in the present invention;

[0017] Figure 6 It is a schematic diagram of the top view of the structure when the combined tooling in the present invention is used as a flap tooth grinding positioning tooling. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-6 The present invention provides a technical solution: a tooth profile forming grinding device with a multi-petal structure internal gear, comprising a machine tool cradle M01, the machine tool cradle M01 is connected to the turntable of the machine tool, a V-shaped positioning seat M06 is arranged on the upper surface of the machine tool cradle M01, a fifth locking screw M10 is arranged at the bottom of the machine tool cradle M01, and is screwed into the positioning seat M06 for connection and fixation, a positioning baffle M02 and a pressure plate M03 are respectively arranged on both sides of the positioning seat M06, a petal tooth mounting seat L03 and a petal tooth A01 connected to the petal tooth mounting seat L03 are arranged on the top of the positioning seat M06, and a fifth locking screw M10 is arranged at the bottom of the machine tool cradle M01, and is screwed into the positioning seat M06 for connection and fixation, a positioning baffle M02 and a pressure plate M03 are respectively arranged on both sides of the positioning seat M06, a petal tooth mounting seat L03 and a petal tooth A01 connected to the petal tooth mounting seat L03 are arranged on the top of the positioning seat M06, and a petal tooth A01 is arranged on the positioning baffle M02 and Between the pressure plate M03, the positioning baffle M02 is used to position the end face of the petal tooth mounting seat L03, and the pressure plate M03 is used to press against the end face of the petal tooth mounting seat L03. The petal tooth mounting seat L03 and the outer side are provided with a first connecting screw L04, and are screwed into the petal tooth A01 for connection and fixation. The petal tooth mounting seat L03 and the outside of the petal tooth A01 are detachably provided with a combination tooling, and the combination tooling can combine and dock four groups of petal tooth mounting seats L03 and petal teeth A01. A petal tooth A01 is installed on each petal tooth mounting seat L03, which is an installation positioning part when the petal tooth A01 is ground, and is also a positioning part for the petal tooth A01 to be combined into a complete gear ring after grinding.

[0020] During specific implementation, a pad M09 is provided on the lower surface of the positioning seat M06.

[0021] During specific implementation, the outer sides of the positioning baffle M02 and the pressure plate M03 are respectively provided with a first locking screw M04 and a second locking screw M05, which are screwed into the positioning seat M06 for connection and fixation.

[0022] During specific implementation, the third locking screw M07 and the fourth locking screw M08 are respectively provided on both sides of the outer wall and the bottom end of the positioning seat M06, and are screwed into the petal tooth mounting seat L03 for connection and fixation.

[0023] During specific implementation, the flap tooth A01 also includes a flap tooth connecting plate A02 arranged at the bottom of the flap tooth A01. A plurality of threaded holes G01 are arranged on the bottom surface of the flap tooth connecting plate A02 and penetrate the flap tooth A01. A second connecting screw A03 is screwed into the inner cavity of the threaded hole G01 to connect and fix the flap tooth A01 and the flap tooth connecting plate A02. A positioning pin hole D01 penetrating the flap tooth A01 is provided on the outer surface of the flap tooth connecting plate A02. A first positioning pin A04 is arranged in the inner cavity of the positioning pin hole D01 to enable the flap tooth A01 to be precisely positioned on the flap tooth connecting plate A02.

[0024] In specific implementation, the combined tooling includes a mounting base L01, a combined positioning plate L02 is arranged on one side of the mounting base L01, the combined positioning plate L02 is used for precise positioning of the gear mounting seat, the mounting base L01 serves as a mounting base of the combined positioning plate L02, a second positioning pin L05 and a third connecting screw L06 are arranged on the outer side of the combined positioning plate L02, and the second positioning pin L05 and the third connecting screw L06 extend into the mounting base L01, the second positioning pin L05 is used for precise positioning of the combined positioning plate L02 and the mounting base L01, and a coaxial positioning pin L05 is arranged on the outer side of the combined positioning plate L02. The outer sides of the positioning seat L11 and the coaxial positioning seat L11 are respectively provided with a fourth connecting screw L07 and a third positioning pin L08, and extend to the combined positioning plate L02 for connection and fixation. Four sets of petal tooth mounting seats L03 and petal teeth A01 are arranged in the inner cavity of the combined positioning plate L02 and the coaxial positioning seat L11 for combined splicing. In actual use, they can be divided into n petals according to actual conditions. After assembly, multiple petal tooth mounting seats L03 have the same shape as the inner cavity of the L02 combined positioning plate and are precisely matched. The outer wall circumference of the combined positioning plate L02 is provided with a sixth locking screw L10, which is screwed into the petal tooth mounting seat L03 for connection and fixation.

[0025] During specific implementation, a dense bead sleeve L09 is further provided between the coaxial positioning seat L11 and the petal tooth connecting plate A02, so as to accurately ensure the coaxiality of the petal tooth connecting plate A02 and the petal tooth A01.

[0026] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows:

[0027] like Figure 6 As shown, the fourth connecting screw L07, the third positioning pin L08, and the bead sleeve L09 of the combined tooling are removed as the petal tooth grinding positioning tooling, and after the petal tooth mounting seat L03 is positioned and connected with the L02 combined positioning plate, each A01 petal tooth is respectively installed on the petal tooth mounting seat L03, and the outer arc of the A01 petal tooth is close to the inner arc of the petal tooth mounting seat L03 and fastened with the first connecting screw L04, and finally the sixth locking screw L10 is loosened, and the petal tooth mounting seat L03 connected with the A01 petal tooth can be taken out for grinding;

[0028] When performing grinding processing, first unscrew the second locking screw M05 of the pressure plate M03, remove the pressure plate M03, then put the flap tooth mounting seat L03 connected with the A01 flap tooth on the positioning seat M06, and place the flap tooth mounting seat L03 against the positioning baffle M02, and then fix the flap tooth mounting seat L03 and the positioning seat M06 together through the third locking screw M07 and the fourth locking screw M08, and finally re-lock the pressure plate M03 through the second locking screw M05 to press it on the flap tooth mounting seat L03, so as to accurately fix the flap tooth mounting seat L03 connected with the A01 flap tooth, and at this time, the flap tooth A01 can be ground through the external grinding wheel S01;

[0029] When the grinding process is completed, the flap tooth mounting seat L03 connected with the A01 flap tooth is removed from the positioning seat M06, and then multiple flap tooth mounting seats L03 connected with the A01 flap teeth are installed one by one in the combined positioning plate L02 and the coaxial positioning seat L11 of the combined tooling. The ground flap teeth A01 can be precisely reassembled through the combined tooling.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tooth profile shaping grinding device for a multi-petal internal gear, characterized in that: It includes a machine tool cradle, which is connected to the turntable of the machine tool, the upper surface of the machine tool cradle is provided with a positioning seat arranged in a V shape, the bottom of the machine tool cradle is provided with a fifth locking screw, which is screwed into the positioning seat for connection and fixation, positioning baffles and pressure plates are respectively provided on both sides of the positioning seat, a flap tooth mounting seat and a flap tooth connected to the flap tooth mounting seat are provided on the top of the positioning seat, and are located between the positioning baffle and the pressure plate, the flap tooth mounting seat and the outer side are provided with a first connecting screw, which is screwed into the flap tooth for connection and fixation, and the flap tooth mounting seat and the flap tooth are detachably provided with a combined tooling on the outside, and the combined tooling can dock four groups of flap tooth mounting seats and flap tooth combinations; The combined tooling includes a mounting base, a combined positioning plate is arranged on one side circumference of the mounting base, a second positioning pin and a third connecting screw are respectively arranged on the outer side of the combined positioning plate, and the second positioning pin and the third connecting screw extend into the mounting base, a coaxial positioning seat is arranged on the outer side of the combined positioning plate, a fourth connecting screw and a third positioning pin are respectively arranged on the outer side of the coaxial positioning seat, and extend into the combined positioning plate for connection and fixation, the four groups of petal tooth mounting seats and petal teeth are arranged in the inner cavity of the combined positioning plate and the coaxial positioning seat for combined splicing, a sixth locking screw is arranged on the outer wall circumference of the combined positioning plate, and is screwed into the petal tooth mounting seat for connection and fixation.

2. The tooth profile shaping grinding device for a multi-petal internal gear according to claim 1, characterized in that: A pad is provided on the lower surface of the positioning seat.

3. The tooth profile shaping grinding device for a multi-petal internal gear according to claim 2, characterized in that: The outer sides of the positioning baffle and the pressure plate are respectively provided with a first locking screw and a second locking screw, which are screwed into the positioning seat for connection and fixation.

4. The tooth profile shaping grinding device for a multi-petal internal gear according to claim 3, characterized in that: The third locking screw and the fourth locking screw are respectively arranged on both sides and the bottom of the outer wall of the positioning seat, and are screwed into the petal tooth mounting seat for connection and fixation.

5. The tooth profile shaping grinding device for a multi-petal internal gear according to claim 4, characterized in that: The flap tooth also includes a flap tooth connecting plate arranged at the bottom of the flap tooth, and a plurality of threaded holes are arranged on the bottom end surface of the flap tooth connecting plate and penetrate the flap tooth, and a second connecting screw is threadedly connected to the inner cavity of the threaded hole to connect and fix the flap tooth and the flap tooth connecting plate, and a positioning pin hole penetrating the flap tooth is opened on the outer surface of the flap tooth connecting plate, and a first positioning pin is arranged in the inner cavity of the positioning pin hole.

6. The tooth profile shaping grinding device for a multi-petal internal gear according to claim 5, characterized in that: A dense bead sleeve is also arranged between the coaxial positioning seat and the flap tooth connecting plate.

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