A dressing broach with a semi-circular internal gear tooth profile and a precision process dressing method

Abstract

A trimming broach with a semi-circular inner gear ring tooth profile and a precision process trimming method, including a broach body. The broach body is a cylindrical body larger than a semi-circle, with a semi-circular arc surface as the front end surface and a flat surface as the broach guiding and supporting surface. The lower part of the broach body is the front guide, the middle part of the broach body is the broach tooth part, and the upper end of the broach tooth part is the rear guide. The present invention uses a special broach to trim a semi-circular hole, and utilizes the high-precision semi-circular hole inserted by the original gear shaper for the pin tooth housing hole to adapt to and improve the machining accuracy and efficiency of the connected pin tooth housing.

Description

Technical Field

[0001] The invention relates to the technical field of needle gear housing production, and in particular to a trimming pusher with a semicircular inner gear ring shape and a precision process trimming method. Background Art

[0002] The reducer needs to be used horizontally, that is, the input and output rotation axes are coaxial horizontal lines. In order to ensure the rigidity of the reducer transmission, the pinion housing and chassis as the housing of the whole machine are designed to be a connected pinion housing. The original conventional pinion housing has a rotating structure, but the pinion housing is changed to a connected structure. The machine tool originally used for fine grinding of the pinholes of the rotating pinion housing is no longer suitable. If a high-precision CNC gear shaping machine that maintains the original single-tooth pitch and cumulative pitch is used, the precision of the semi-circular hole of the gear shaping cutter used for gear shaping is very poor, and a special push cutter is required to complete the precision process of trimming the semi-circular hole. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a special push knife and a process method for trimming a semicircular hole by using the special push knife.

[0004] The technical solution adopted by the present invention is:

[0005] A trimming push knife with a semicircular tooth shape of an inner gear ring comprises a push knife body, which is a cylindrical body with an arc-shaped cross section, the arc-shaped surface is the front end surface, the plane is the push knife guide support surface, the lower part of the push knife body is the front guide, the middle part of the push knife body is the push knife tooth part, and the upper end of the push knife tooth part is the rear guide.

[0006] The front end surface of the pusher tooth portion is provided with arc-shaped teeth and pusher empty grooves between the arc-shaped teeth.

[0007] A connecting hole is provided at one end of the push knife body close to the rear guide.

[0008] A precision process finishing method for an inner gear ring with a semicircular tooth shape, the process steps are as follows:

[0009] S1 performs aging treatment on the vibrating aging equipment for the one-piece needle gear housing with the needle gear hole to be trimmed after the inserting process to ensure the stability of the final processing quality;

[0010] S2 installs a rotatable tooling with a full ring of steel balls on the chassis to facilitate the rotation of the integrated needle gear housing on the operating table;

[0011] S3. Place the end face of one side of the one-piece needle gear housing against the upper end face of the tooling. The one-piece needle gear housing does not need to be clamped.

[0012] On one side of the broaching guide support surface, a broaching guide support block is arranged. Check that the guide plane of the broaching guide support block is smooth without bumps. The broaching guide support block is connected with a support pin, and the support pin is in close contact with the integral pin gear housing. The broaching guide support block and the support pin are used to bear the radial force and the initial positioning in the circumferential direction during the broaching process;

[0013] S5 Check that the broaching guide support plane, the front guide, the rear guide part of the broaching tool and the arc-shaped tooth edge part of the broaching teeth are free of bumps and damages. In particular, visually inspect and remove the built-up edge residues on the edge part;

[0014] S6 Manually push the front guide of the broaching tool along the needle tooth hole to be broached and the broaching guide support surface into the needle tooth hole. At this time, the position of the broaching tool body on the integral pin gear housing has been determined; meanwhile, use the front guide of the broaching tool and the broaching guide support surface to determine the circumferential position of the integral pin gear housing;

[0015] S7 Use a lever force-applying device to align the lever pressure head with the upper end surface of the broaching tool body that has been suspended above the integral pin gear housing. Manually pull the lever downward until the broaching tool body reaches the pushing-out position and then the broaching tool body falls by itself;

[0016] S8 A spacer ring with buffer isolation conditions is arranged at the place where the broaching tool body falls to prevent bumps when the broaching tool falls and collisions between broaching tool bodies during multi-hole broaching;

[0017] S9 After rotating the integral pin gear housing to the next needle tooth hole to be broached, repeat the above steps to process the next needle tooth hole.

[0018] According to the different numbers of broached holes, different thrust forces, and different contact areas of the broaching tools, a double-column hydraulic press, a single-column hydraulic press or a simple special machine can be respectively used to apply force for broaching semi-circular holes.

[0019] During the steps S6 and S7, lubricating oil is added to the broaching part of the needle tooth hole of the integral pin gear housing to ensure the surface quality of the needle tooth hole after broaching and extend the service life of the broaching tool body.

[0020] The broaching tool body is provided with a broaching cleaning liquid tank for cleaning and preparing the broaching tool body after broaching.

[0021] When the broaching guide support block is configured as a guide support disk with the same number as the needle tooth holes, after all the broaching tool bodies with the same number as the needle tooth holes are pushed into the needle tooth holes with the front guide parts, a circular push disk is configured on the hydraulic press head of the hydraulic press, and the broaching hole work can be completed at one time.

[0022] The upper surface of the operating table is flat.

[0023] Beneficial effects of the present invention: The present invention adopts a special push cutter to trim the semicircular hole, and utilizes the original gear shaping machine to shape the high-precision semicircular hole of the pinion gear housing hole, so as to adapt to and improve the machining accuracy and efficiency of the conjoined pinion gear housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the push knife structure of the present invention.

[0025] Figure 2 A top view of the push knife of the present invention.

[0026] Figure 3 It is a schematic diagram of the push knife of the present invention when in use.

[0027] Among them: 1-push knife body; 2-rear guide; 3-push knife tooth; 4-arc-shaped tooth; 5-front guide; 6-connecting hole; 7-front end face; 8-push knife guide support surface; 9-push knife empty slot; 10-connected needle tooth shell; 11-push knife guide support block. DETAILED DESCRIPTION

[0028] A trimming push knife with a semicircular tooth shape of an inner gear ring includes a push knife body 1. The push knife body 1 is a cylindrical body with a superior arc-shaped cross-section, the superior arc-shaped surface is a front end surface 7, the plane is a push knife guide support surface 8, the lower part of the push knife body 1 is a front guide 5, the middle part of the push knife body 1 is a push knife tooth portion 3, and the upper end of the push knife tooth portion 3 is a rear guide 2.

[0029] The front end surface 7 of the pusher tooth portion 3 is provided with arc-shaped teeth 4 and pusher empty grooves 9 between the arc-shaped teeth 4.

[0030] A connecting hole 6 is formed at one end of the push knife body 1 close to the rear guide 2 .

[0031] A precision process finishing method for an inner gear ring with a semicircular tooth shape, the process steps are as follows:

[0032] S1: the conjoined needle gear housing 10 with the needle gear hole to be trimmed after the inserting process is subjected to aging treatment on a vibration aging device to ensure the stability of the final processing quality;

[0033] S2 installs a rotatable tooling with a full ring of steel balls on the chassis to facilitate the rotation of the integrated needle gear housing on the operating table;

[0034] S3: Place the end surface of one side of the one-piece needle gear housing 10 against the upper end surface of the tooling, and the one-piece needle gear housing 10 does not need to be clamped;

[0035] On one side of the broaching guide support surface 8 of S4, a broaching guide support block 11 is arranged. Check that the guide plane of the broaching guide support block 11 is smooth without bumps. The broaching guide support block 11 is connected with a support pin, and the support pin is in close contact with the integral pin gear housing 10. The broaching guide support block 11 and the support pin are used to bear the radial force and the initial positioning in the circumferential direction during the broaching process;

[0036] S5 Check that there are no bumps or damages on the broaching guide support plane 8, the front guide 5, the rear guide 2 part, and the arc tooth 4 edge part of the broaching tooth part 3 of the broaching tool. In particular, visually inspect and remove the built-up edge residues on the edge part;

[0037] S6 Manually push the front guide 5 of the broaching tool into the pin tooth hole along the to-be-broached pin tooth hole and the broaching guide support surface 8. At this time, the position of the broaching tool body 1 on the integral pin gear housing 10 has been determined; meanwhile, the circumferential position of the integral pin gear housing 10 is determined by using the front guide 5 of the broaching tool and the broaching guide support surface 8;

[0038] S7 Use a lever force-applying device to align the lever pressure head with the upper end surface of the broaching tool body 1 that has been suspended above the integral pin gear housing 10. Manually pull the lever downward until the broaching tool body 1 reaches the pushing-out position and then the broaching tool body 1 falls by itself;

[0039] S8 A spacer ring with buffer isolation conditions is arranged at the place where the broaching tool body 1 falls to prevent the bumps when the broaching tool falls and the collision between the broaching tool bodies 1 during multi-hole broaching;

[0040] S9 After rotating the integral pin gear housing 10 to the next to-be-broached pin tooth hole, repeat the above steps to process the next pin tooth hole.

[0041] According to the different numbers of broached holes, different thrust forces, and different contact areas of the broaching tools, a double-column hydraulic press, a single-column hydraulic press, or a simple special machine can be respectively used to apply force for broaching semi-circular holes.

[0042] During the steps of S6 and S7, lubricating oil is added to the broaching part of the pin tooth hole of the integral pin gear housing 10 to ensure the surface quality of the pin tooth hole after broaching and extend the service life of the broaching tool body 1.

[0043] The broaching tool body 1 is provided with a broaching tool cleaning liquid tank for cleaning and preparing the broaching tool body 1 after broaching the hole.

[0044] The above has described the embodiments of the present invention in detail, but the described content is only the preferred embodiments of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the patent coverage scope of the present invention.

Claims

1. A precision process trimming method for an internal gear ring with a semi-circular tooth profile, which utilizes a trimming broach with a semi-circular tooth profile for the internal gear ring, characterized in that The process steps are as follows: S1. Perform aging treatment on the connected pin tooth housing (10) with the pin tooth holes to be trimmed after the insertion machining on a vibration aging equipment to ensure the stability of the final machining quality. S2. Install a tooling with a full-steel ball annular arrangement and rotatability on the chassis for facilitating the indexing of the connected pin tooth housing (10) on the operating table. S3. Lean one end face of the connected pin tooth housing (10) against the upper end face of the tooling. The connected pin tooth housing (10) does not need to be clamped. S4. A push tool guiding and supporting block (11) is arranged on one side of the push tool guiding and supporting surface (8). Check that the guiding plane of the push tool guiding and supporting block (11) is smooth without bumps. The push tool guiding and supporting block (11) is connected with a supporting pin, and the supporting pin is leaned against the connected pin tooth housing (10). The push tool guiding and supporting block (11) and the supporting pin are used to bear the radial force and the initial positioning in the circumferential direction during the push broaching process. S5. Check that there are no bumps or damages on the push tool guiding and supporting surface (8), the front guide (5), the rear guide (2) part, and the arc teeth (4) cutting edge part of the push teeth part (3) of the push tool. In particular, visually inspect and remove the built-up edge residues on the cutting edge part. S6. Manually push the front guide (5) of the push tool along the pin tooth hole to be pushed and the push tool guiding and supporting surface (8) into the pin tooth hole. At this time, the position of the push tool body (1) on the connected pin tooth housing (10) has been determined. At the same time, use the front guide (5) of the push tool and the push tool guiding and supporting surface (8) to determine the circumferential position of the connected pin tooth housing (10). S7. Use a lever force adding device to align the lever pressure head with the upper end face of the push tool body (1) that has been suspended above the connected pin tooth housing (10). Manually pull the lever downward until the push tool body (1) reaches the pushing position and then the push tool body (1) falls by itself. S8. A spacer ring with buffer isolation conditions is arranged at the place where the push tool body (1) falls to prevent the bumps when the push tool falls and the collision between the push tool bodies (1) during multi-hole push broaching. S9. After rotating the connected pin tooth housing (10) to the next pin tooth hole to be pushed, repeat the above steps to process the next pin tooth hole. The trimming push tool includes a push tool body (1). The push tool body (1) is a columnar body with a cross-section in the shape of a superior arc. The superior arc surface is the front end face (7), and the flat surface is the push tool guiding and supporting surface (8). The lower part of the push tool body (1) is the front guide (5), the middle part of the push tool body (1) is the push teeth part (3), and the upper end of the push teeth part (3) is the rear guide (2). The front end face (7) of the push teeth part (3) is provided with arc teeth (4) and push tool empty slots (9) between the arc teeth (4). One end of the push tool body (1) close to the rear guide (2) is provided with a connection hole (6).

2. The precision process trimming method for the internal gear ring with a semi-circular tooth profile according to claim 1, characterized in that, According to the different numbers of push holes, different thrust forces, and different contact areas of the push broaching tools, a double-column hydraulic press, a single-column hydraulic press, or a simple special machine can be respectively used for applying force to push broach the semi-circular holes.

3. The precision process trimming method for the internal gear ring with a semi-circular tooth profile according to claim 2, characterized in that, During the steps S6 and S7, lubricating oil is added to the push broaching part of the pin tooth holes of the connected pin tooth housing (10) to ensure the surface quality of the pin tooth holes after push broaching and extend the service life of the push tool body (1).

4. The precision process trimming method for the internal gear ring with a semi-circular tooth profile according to claim 1, characterized in that, The push tool body (1) is provided with a push tool cleaning liquid tank for cleaning and preparing the push tool body (1) after push broaching.

5. The precision process trimming method for the internal gear ring with a semi-circular tooth profile according to claim 3, characterized in that, When the push cutter guiding and supporting block (11) is configured as a guiding and supporting disc with the same number of teeth as the pin holes, after all the push cutter bodies (1) with the same number of teeth as the pin holes are fully pushed into the pin holes with the front guiding (5) part, a circular push disc is arranged on the oil press head by using an oil press, and the hole pushing work can be completed at one time.

6. The precision machining and finishing method for the internal gear ring with a semi-circular tooth profile according to claim 3, characterized in that, The upper surface of the said operating table is flat.

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