Internal tooth machining tool

Abstract

The utility model relates to the technical field of gear machining, in particular to an internal tooth machining tool. The tool comprises a connecting seat; the positioning shaft is detachably arranged on the connecting seat; the supporting table is fixedly connected with the connecting base and arranged around the positioning shaft, and the supporting face of the supporting table is perpendicular to the axis of the positioning shaft; the pressing blocks are in an L shape, the multiple pressing blocks are distributed around the positioning shaft, one end of each pressing block is supported on the connecting base and supported on the side, away from the direction of the positioning shaft, of the supporting table, the other end of each pressing block extends towards the upper portion of the supporting table, and a first via hole is formed in the middle of the end, extending towards the upper portion of the supporting table, of each pressing block; the small end of the bolt penetrates through the first via hole and then is in threaded connection with the connecting base. By means of the tool, the fixing problem during machining of the inner gear part of the workpiece is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to a special tooling for internal gear processing. Background Art

[0002] Gear shaping is a method of machining gear teeth by the reciprocating up and down movement of a gear shaper cutter on a gear shaper. This machining method has unique advantages in machining special-shaped gears or internal gears.

[0003] When gear shaping is carried out, it is necessary to first fix the workpiece to be machined on the machine tool by using a special tooling. For example, a non-standard gear workpiece has a through shaft hole, an internal gear is arranged in the upper end direction of the shaft hole, and an external gear is arranged outside the workpiece at the same time. The internal gear part of this workpiece is machined by gear shaping. However, this workpiece has multiple specifications with different sizes. If a special tooling is designed separately for each size specification, the cost will be relatively high.

[0004] In view of this, a special tooling with mobile versatility is developed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a special tooling for internal gear processing, which solves the fixing problem during the machining of the internal gear part of our company's workpiece.

[0006] A special tooling for internal gear processing includes: a connecting seat; a positioning shaft detachably arranged on the connecting seat; a supporting platform fixedly connected with the connecting seat and arranged around the positioning shaft, the supporting surface of the supporting platform is perpendicular to the axis of the positioning shaft; a pressing block in an L shape, a plurality of the pressing blocks are distributed around the positioning shaft, one end of the pressing block supports on the connecting seat, supports on the side of the supporting platform away from the positioning shaft, and the other end extends upward above the supporting platform. A first through hole is arranged in the middle of the end of the pressing block extending upward above the supporting platform; a bolt, the small end of the bolt passes through the first through hole and is threadedly connected with the connecting seat.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the connecting seat is in a disc shape, and a plurality of second through holes are circumferentially distributed on the connecting seat.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a positioning hole is arranged on the connecting seat, and a first threaded hole is arranged around the positioning hole; a connecting flange is arranged at the lower end of the positioning shaft, a positioning pin coaxial with the positioning shaft is arranged below the connecting flange, and a third through hole is arranged on the connecting flange; the positioning pin is embedded in the positioning hole, the third through hole is aligned with the first threaded hole, and a screw passes through the third through hole and is threadedly connected with the first threaded hole.

[0009] Based on the above solution and as a preferred solution to the above solution: The positioning shaft is provided with a liquid passage extending from the upper end face to the connecting flange, and a liquid passage hole is provided on the side of the positioning shaft adjacent to the connecting flange direction to communicate with the liquid passage; the support platform is provided with a notch.

[0010] Based on the above solution and as a preferred solution to the above solution: The pressing block is provided with a convex platform protruding downward at the end of the upper end of the support platform.

[0011] In order to achieve the above object, the present utility model adopts the following technical solutions:

[0012] In order to solve the problem of fixing the internal gear of the workpiece during processing, the present utility model has the following beneficial effects:

[0013] The internal gear processing tooling of the present utility model can be used for processing the internal gear of a workpiece. The workpiece has a through shaft hole, and an internal gear is provided in the upper end direction of the shaft hole.

[0014] During application, the shaft hole of the workpiece is inserted through the positioning shaft, the workpiece is positioned by the positioning shaft, and at the same time, the support surface of the support platform forms a support for the lower end surface of the workpiece. Then, the pressing block is used to surround the workpiece, the end of the pressing block presses against the upper end surface of the workpiece, and at the same time, the large end of the bolt is used to press the pressing block to firmly fix the workpiece.

[0015] The clamping operation of the internal gear processing tooling of the present utility model on the workpiece is very simple, and the structure of this tooling is not complex, the manufacturing difficulty is low, and the cost is not high.

[0016] At the same time, the positioning shaft of this tooling is detachable. Among them, the positioning shaft part can be made into a plurality of positioning shafts with dimensions adapted to the corresponding shaft hole according to different size specifications of the workpiece (non-standard gear workpiece). Then, the positioning shaft adapted to the size specification of the processed workpiece can be replaced and applied accordingly.

[0017] In addition to the above-described purposes, features, and advantages, the present utility model has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the internal gear processing tooling of the present utility model;

[0019] Figure 2 is an exploded assembly diagram of the internal gear processing tooling of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Referring to Figure 1-2 , the internal gear processing tooling of the present utility model can be used for processing the internal gear 502 of the workpiece 500. The workpiece 500 has a through shaft hole 501, and the internal gear 502 is arranged in the upper end direction of the shaft hole 501.

[0022] In the implementation manner of the present disclosure, the internal gear processing tooling includes a connecting seat 100, a positioning shaft 200, a support table 300, a pressing block 400 and bolts.

[0023] The connecting seat 100 is used for the overall structural support of the tooling and for connecting the processing machine tool for processing the internal gear 502. Among them, the connecting seat 100 is in a disc shape, and a plurality of second through holes 101 are circumferentially distributed on the connecting seat 100. The second through holes 101 can be used for connection when installing to the processing machine tool.

[0024] Among them, the positioning shaft 200 is detachably arranged on the connecting seat 100. Referring to Figure 2 , in order to facilitate the detachable connection of the positioning shaft 200 and enhance the convenience of disassembly and assembly, a positioning hole 102 is arranged on the connecting seat 100, and a first threaded hole 103 is arranged around the positioning hole 102; a connecting flange 201 is arranged at the lower end of the positioning shaft 200, a positioning pin 202 coaxial with the positioning shaft 200 is arranged at the lower part of the connecting flange 201, and a third through hole 203 is arranged on the connecting flange 201; the positioning pin 202 is embedded in the positioning hole 102, the third through hole 203 is aligned with the first threaded hole 103, and a screw is arranged to pass through the third through hole 203 and be threadedly connected with the first threaded hole 103. The connecting flange 201 can be fixed on the connecting seat 100 through the screw, and the cooperation between the positioning pin 202 and the positioning hole 102 ensures the repeated accuracy of the replacement of the positioning shaft 200.

[0025] Among them, the support table 300 can be made into a ring shape, coaxial with the positioning shaft 200, fixedly connected with the connecting seat 100, arranged around the positioning shaft 200, and the support surface of the support table 300 is perpendicular to the axis of the positioning shaft 200.

[0026] Among them, the pressing block 400 is in an L shape, and a plurality of pressing blocks 400 are distributed around the positioning shaft 200. Preferably, the number of the pressing blocks 400 is generally three, and the three pressing blocks 400 are evenly distributed around the support table 300. One end of the pressing block 400 supports on the connecting seat 100, on the side of the support table 300 far from the positioning shaft 200, and the other end extends upward toward the support table 300. A first through hole 401 is arranged in the middle of the end of the pressing block 400 extending upward toward the support table 300.

[0027] Among them, a second threaded hole 104 opposite to the first through hole 401 is provided on the connecting seat 100. The small end of the bolt passes through the first through hole 401 and is threadedly connected to the second threaded hole 104 on the connecting seat 100. By rotating the bolt, the large end of the bolt can press the pressing block 400 in the direction close to the connecting seat 100.

[0028] When this internal gear processing tooling is applied, as Figure 1 shown, the shaft hole 501 of the workpiece 500 is inserted through the positioning shaft 200. The workpiece 500 is positioned by the positioning shaft 200. At the same time, the supporting surface of the supporting table 300 forms a support for the lower end surface of the workpiece 500. Then, the pressing block 400 is used to surround the workpiece 500. The end of the pressing block 400 abuts against the upper end surface of the workpiece 500. At the same time, the large end of the bolt is used to press the pressing block 400, so as to firmly fix the workpiece 500.

[0029] The clamping operation of the internal gear processing tooling of the present utility model for the workpiece 500 is very simple, and the structure of this tooling is not complex, the manufacturing difficulty is low, and the cost is not high.

[0030] At the same time, the positioning shaft 200 of this tooling is detachable. Among them, the positioning shaft 200 part can be made into a plurality of positioning shafts 200 with sizes adapted to the corresponding shaft holes 501 according to different size specifications of the workpiece 500 (non-standard gear workpiece 500). Then, the corresponding positioning shaft 200 can be replaced according to the size specification of the processed workpiece 500 for application.

[0031] Among them, in order to better press the upper end surface of the workpiece 500 through the end of the pressing block 400, a convex platform 402 protruding downward is provided at the end of the pressing block 400 at the upper end above the supporting table 300. This convex platform 402 is used to act on the upper end surface of the workpiece 500 to press and clamp the workpiece 500.

[0032] Furthermore, since cutting fluid needs to be applied when processing the internal gear 502, accordingly, the positioning shaft 200 is provided with a liquid passing channel 204 extending from the upper end surface to the connecting flange 201, and a liquid passing hole 205 is provided on the side of the positioning shaft 200 adjacent to the connecting flange 201 direction and communicated with the liquid passing channel 204; the supporting table 300 is provided with a notch 301. The cutting fluid entering the shaft hole 501 of the workpiece 500 during the processing of the internal gear 502 can sequentially pass through the liquid passing channel 204 and the liquid passing hole 205 and then flow out from the notch 301 and enter the circulation.

[0033] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An internal gear processing tool, characterized in that: include: Connecting seat (100); A positioning shaft (200) is detachably arranged on the connecting seat (100); A support platform (300) is fixedly connected to the connection seat (100) and is arranged around the positioning shaft (200), and a support surface of the support platform (300) is perpendicular to the axis of the positioning shaft (200); A pressing block (400) is L-shaped, and a plurality of the pressing blocks (400) are arranged and distributed around the positioning axis (200); one end of the pressing block (400) is supported on the connecting seat (100) and supported on the side of the support platform (300) away from the positioning axis (200); the other end extends upward from the support platform (300); a through hole (401) is provided in the middle of the end of the pressing block (400) extending upward from the support platform (300); A bolt, wherein the small end of the bolt passes through the first through hole (401) and is threadedly connected to the connecting seat (100).

2. The internal gear processing tool according to claim 1, characterized in that: The connection seat (100) is in the shape of a disk, and a plurality of second through holes (101) are distributed on the circumference of the connection seat (100).

3. The internal gear processing tool according to claim 1 or 2, characterized in that: The connection seat (100) is provided with a positioning hole (102), and a threaded hole one (103) is provided around the positioning hole (102); a connection flange (201) is provided at the lower end of the positioning shaft (200), and a positioning pin (202) coaxial with the positioning shaft (200) is provided at the lower part of the connection flange (201), and a through hole three (203) is provided on the connection flange (201); the positioning pin (202) is embedded in the positioning hole (102), the through hole three (203) is directly opposite to the threaded hole one (103), and a screw is provided to pass through the through hole three (203) and then be threadedly connected with the threaded hole one (103).

4. The internal gear processing tool according to claim 3, characterized in that: The positioning shaft (200) is provided with a liquid passage (204) extending from the upper end surface to the connecting flange (201), and a liquid passage hole (205) is provided on the side of the positioning shaft (200) adjacent to the connecting flange (201) and connected to the liquid passage (204); the support platform (300) is provided with a cutout (301).

5. The internal gear processing tool according to claim 1, characterized in that: The end of the pressing block (400) located above the support platform (300) is provided with a boss (402) protruding downwards.

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