A gear wire cutting keyway tool

Abstract

The utility model discloses a gear wire cutting keyway tool, comprising a tire body, a receiving hole is provided in the tire body, an annular boss is provided at the bottom of the receiving hole, a through hole is provided in the annular boss, a tire is arranged in the receiving hole and abuts on the annular boss, an annular hydraulic oil chamber is provided between the tire and the receiving hole, the lower end of the tire closes the bottom of the annular hydraulic oil chamber, the upper end of the tire is detachably connected to the tire body and closes the top of the annular hydraulic oil chamber, an oil injection channel connected to the annular hydraulic oil chamber is provided on the tire body, an oil outlet channel connected to the annular hydraulic oil chamber is provided on the tire, a closed screw plug is connected to the oil injection channel and the oil outlet channel, a processing hole is provided in the tire, a plurality of spring sleeves are arranged in the processing hole, and an involute external cylindrical spur gear is provided between two upper and lower adjacent spring sleeves; the one-time multi-piece processing of a plurality of involute external cylindrical spur gears is realized; the processing efficiency is improved while the product quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a gear wire cutting keyway tool. Background Art

[0002] In the prior art, the involute external cylindrical spur gear is one of the parts in the robot arm, and its structure is as follows Figure 1 As shown, the involute external cylindrical spur gear has external teeth, holes, and keyways. Traditional keyway processing methods include key insertion, key pulling, wire cutting, etc. If the core of the workpiece is too hard and the hole and keyway are small in size, wire cutting can be used to ensure the keyway processing quality and save costs. However, when processing a single piece, the long installation time of the upper piece will lead to low processing efficiency, increased production costs, and thus make the product lack of market competitiveness.

[0003] Therefore, there is an urgent need for a gear wire cutting keyway tooling to achieve multiple pieces processing at one time to solve the above technical problems. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problem, thereby providing a gear wire cutting keyway tool to realize one-time multi-piece processing of a plurality of involute external cylindrical spur gears fixed in a tire; not only is the structure simple and easy to operate, but also no complicated workpiece installation steps are required, while improving the processing efficiency, the product quality can also be guaranteed, the production cost of the involute external cylindrical spur gears is reduced, and the market competitiveness of the products using the involute external cylindrical spur gears is indirectly improved.

[0005] The utility model solves the above problems and adopts the following technical solutions:

[0006] A gear wire cutting keyway tool comprises a carcass, a receiving hole is arranged in the carcass, an annular boss is arranged at the lower part of the receiving hole, a through hole is arranged in the annular boss which is coaxial with and connected to the receiving hole, an expansion tire abutting on the annular boss is installed in the receiving hole, an annular hydraulic oil chamber is arranged between the expansion tire and the receiving hole, the lower end portion of the expansion tire closes the bottom of the annular hydraulic oil chamber, the upper end portion of the expansion tire is detachably connected to the carcass and closes the top of the annular hydraulic oil chamber, an oil injection channel connected to the annular hydraulic oil chamber is arranged on the carcass, an oil outlet channel connected to the annular hydraulic oil chamber is arranged on the expansion tire, closed wire plugs are connected to the oil injection channel and the oil outlet channel, a machining hole is arranged in the expansion tire which is coaxial with and connected to the receiving hole and the through hole, a plurality of spring sleeves are installed in the machining hole, and an involute external cylindrical spur gear is arranged between two upper and lower adjacent spring sleeves.

[0007] As a preferred embodiment, a further technical solution of the utility model is:

[0008] Preferably, a positioning ring is installed inside the processing hole, the lower bottom surface of the positioning ring abuts against the annular boss, and an inner ring opening is provided on the positioning ring, which is cocentric with and connected to the through hole and the accommodating hole, and the outer diameter of the positioning ring is adapted to the inner diameter of the processing hole.

[0009] Preferably, the tire expansion includes an annular cover plate and a cylindrical body, the cylindrical body is vertically fixed to the lower bottom surface of the annular cover plate, and a plurality of threaded holes are commonly provided on the upper part of the annular cover plate and the tire body, and hexagon socket screws are installed on the threaded holes, and the plurality of hexagon socket screws are arranged in a circular array around the processed holes on the annular cover plate.

[0010] Preferably, an annular extension boss is provided in the middle of the outer circumferential surface of the cylindrical body, the outer diameter of the annular extension boss is matched with the inner diameter of the accommodating hole, and the annular extension boss abuts against the inner wall surface of the accommodating hole.

[0011] Preferably, the oil outlet channel passes through the annular extension boss and the annular cover plate from bottom to top in sequence, and an upper oil outlet is provided on the upper surface of the annular cover plate. The upper oil outlet is located between a number of hexagon socket screws and the processed holes arranged in a circular array, and a closed screw plug is installed on the upper oil outlet.

[0012] Preferably, an annular sealing boss is provided at the lower part of the outer circumferential surface of the cylindrical body, an inwardly concave groove is provided on the outer circumferential surface of the annular sealing boss, and an annular sealing ring is mounted on the groove and clamped between the annular sealing boss and the inner wall surface of the accommodating hole.

[0013] Preferably, the cross-section of the oil injection channel is an inverted T-shaped structure, including a lower oil outlet connected to the annular hydraulic oil chamber, an upper oil injection port arranged on the upper surface of the tire body, and a side process port arranged on the outer circumferential surface of the tire body, and a closed screw plug is installed on the upper oil injection port and the side process port.

[0014] Preferably, the outer diameters of the plurality of involute external cylindrical spur gears and the plurality of spring sleeves are matched with the inner diameter of the processed hole, and teeth matching and engaging with the involute external cylindrical spur gears are evenly distributed on the inner ring of the spring sleeve.

[0015] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0016] The utility model injects hydraulic oil into the annular hydraulic oil chamber through the oil injection channel, closes the oil injection channel and the oil outlet channel through a closing screw plug, places a plurality of spring sleeves and a plurality of involute external cylindrical spur gears in the processing hole correspondingly, and compresses the hydraulic oil space by screwing the closing screw plug to generate a clamping force on the spring sleeve and the involute external cylindrical spur gear, thereby realizing a clamping and fixing of the involute external cylindrical spur gear, thereby realizing a one-time multi-piece processing of the plurality of involute external cylindrical spur gears fixed in the tire; the utility model has not only a simple structure and is easy to operate, but also does not require complicated workpiece installation steps, and can improve the processing efficiency while also ensuring product quality, thereby reducing the production cost of the involute external cylindrical spur gears, and indirectly improving the market competitiveness of products using the involute external cylindrical spur gears; in addition, by replacing positioning rings of different thicknesses, the processing requirements of involute external cylindrical spur gears of different thicknesses can be met, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the involute external cylindrical spur gear of the utility model;

[0018] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the facade structure of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the carcass of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the utility model tire expansion Figure 1 ;

[0023] Figure 7 It is a structural schematic diagram of the positioning ring of the utility model;

[0024] Figure 8 It is a structural schematic diagram of the spring sleeve of the utility model;

[0025] Fig. 9 This is a schematic diagram of the structure of the utility model tire expansion Figure 2 ;

[0026] In the figure: 1. tire body; 2. receiving hole; 3. annular boss; 4. through hole; 5. tire expansion; 6. annular hydraulic oil chamber; 7. oil filling channel; 8. oil outlet channel; 9. closed screw plug; 10. processing hole; 11. spring sleeve; 12. involute external cylindrical spur gear; 13. positioning ring; 14. inner ring mouth; 15. hexagon socket screw; 16. annular extension boss; 17. upper oil outlet; 18. annular sealing boss; 19. circular ring seal; 20. upper oil filling port; 21. side process port. DETAILED DESCRIPTION

[0027] The following description of the embodiments will help the public better understand the present invention, but the specific embodiments given by the applicant cannot and should not be regarded as limitations on the technical solution of the present invention. Any changes to the definitions of components or technical features and / or formal rather than substantive changes to the overall structure should be regarded as the scope of protection defined by the technical solution of the present invention.

[0028] See also Figures 1 to 9 As shown, the technical solution of the utility model is as follows:

[0029] A gear wire cutting keyway tool comprises a carcass 1, which is a cylindrical structure, a receiving hole 2 is processed in the carcass 1, and an annular boss 3 is processed at the lower part of the receiving hole 2, a through hole 4 is processed in the annular boss 3, the through hole 4 is coaxial with the receiving hole 2 and is connected, an expansion tire 5 is inserted in the receiving hole 2, the lower end of the expansion tire 5 abuts against the upper surface of the annular boss 3, the outer diameter of the part of the expansion tire 5 inserted into the receiving hole 2 is smaller than the inner diameter of the receiving hole 2, the part of the expansion tire 5 inserted into the receiving hole 2 and the inner wall surface of the receiving hole 2 form an annular hydraulic oil chamber 6, the bottom of the annular hydraulic oil chamber 6 is closed by the lower end of the expansion tire 5, so as to prevent the hydraulic oil in the annular hydraulic oil chamber 6 from leaking, the upper end of the expansion tire 5 is detachably mounted on the upper surface of the carcass 1, and the top of the annular hydraulic oil chamber 6 is closed by the upper end of the expansion tire 5, so as to prevent the hydraulic oil in the annular hydraulic oil chamber 6 from leaking, thereby ensuring the annular hydraulic In order to ensure the tightness of the oil chamber 6, an oil injection channel 7 is processed on the tire body 1, and the oil injection channel 7 is connected to the annular hydraulic oil chamber 6. An oil outlet channel 8 is processed on the tire expansion 5, and the oil outlet channel 8 is connected to the annular hydraulic oil chamber 6. A closed thread plug 9 is installed on the oil injection channel 7 and the oil outlet channel 8. The closed thread plug 9 prevents the hydraulic oil injected into the annular hydraulic oil chamber 6 from overflowing. At the same time, the hydraulic oil injected into the annular hydraulic oil chamber 6 is pressurized by the closed thread plug 9. A processing hole 10 is processed in the tire expansion 5. The processing hole 10 is coaxial with the accommodating hole 2 and the through hole 4 and is connected. Five spring sleeves 11 are installed in the processing hole 10. Four involute external cylindrical spur gears 12 are sandwiched between two upper and lower adjacent spring sleeves 11. When the hydraulic oil in the annular hydraulic oil chamber 6 is pressurized, the tire expansion 5 applies pressure to the spring sleeve 11, so that the involute external cylindrical spur gear 12 is tightly clamped and fixed by the spring sleeve 11.

[0030] A locating ring 13 is installed in the processing hole 10, and the lower bottom surface of the locating ring 13 abuts on the annular boss 3. Five spring sleeves 11 and four involute external cylindrical spur gears 12 are all located above the locating ring 13. An inner ring opening 14 which is coaxial with and connected to the through hole 4 and the accommodating hole 2 is processed on the locating ring 13. The outer diameter of the locating ring 13 is adapted to the inner diameter of the processing hole 10; thus, by replacing the locating rings 13 with different thicknesses, the processing requirements for the involute external cylindrical spur gears 12 with different thicknesses can be met, that is, when the thickness of the processed involute external cylindrical spur gear 12 is large, the thickness of the locating ring 13 is correspondingly reduced, and vice versa, the thickness of the locating ring 13 is correspondingly increased, thereby improving the applicability.

[0031] The tire expansion 5 includes an annular cover plate and a cylindrical body, an inner ring opening 14 is processed on the annular cover plate, and a through hole that passes through from top to bottom is processed on the cylindrical body, the inner diameter of the through hole is consistent with the inner diameter of the inner ring opening 14 and they jointly form a processed hole 10, the cylindrical body is vertically fixed to the lower bottom surface of the annular cover plate, twelve threaded holes are jointly processed on the upper part of the annular cover plate and the tire body 1, and hexagon socket screws 15 are installed on the twelve threaded holes, and the twelve hexagon socket screws 15 are arranged in a circular array around the processed hole 10 on the annular cover plate, and the spacing between two adjacent hexagon socket screws 15 is consistent; thereby, the tire expansion 5 and the tire body 1 are fixedly connected together by the twelve hexagon socket screws 15, which is conducive to the connection and separation of the tire expansion 5 and the tire body 1.

[0032] An annular extension boss 16 is processed in the middle of the outer circumferential surface of the cylindrical body, the outer diameter of the annular extension boss 16 is adapted to the inner diameter of the accommodating hole 2, and the annular extension boss 16 abuts against the inner wall surface of the accommodating hole 2; thereby, pressure is applied to the middle of the processing hole 10 through the annular extension boss 16, so that the pressure on the processing hole 10 is balanced.

[0033] The oil outlet channel 8 passes through the annular extension boss 16 and the annular cover plate from bottom to top in sequence, and an upper oil outlet 17 is processed on the upper surface of the annular cover plate. The upper oil outlet 17 is located between the twelve hexagon socket screws 15 arranged in a circular array and the processed holes 10, and the closed screw plug 9 is installed on the upper oil outlet 17; thereby, the hydraulic oil in the annular hydraulic oil chamber 6 can be discharged through the upper oil outlet 17 on the oil outlet channel 8.

[0034] An annular sealing boss 18 is processed on the lower part of the outer circumferential surface of the cylindrical body, and an inwardly concave groove is processed on the outer circumferential surface of the annular sealing boss 18. A circular sealing ring 19 is mounted on the groove, and the circular sealing ring 19 is clamped between the annular sealing boss 18 and the inner wall surface of the accommodating hole 2; thereby, the bottom of the annular hydraulic oil chamber 6 is closed by the cooperation of the annular sealing boss 18 and the circular sealing ring 19, so as to prevent the hydraulic oil from leaking from the gap between the annular sealing boss 18 and the inner wall surface of the accommodating hole 2, thereby improving the sealing performance of the annular hydraulic oil chamber 6.

[0035] The cross section of the oil filling channel 7 is an inverted T-shaped structure, including a lower oil outlet, an upper oil filling port 20 and a side process port 21. The lower oil outlet is connected to the annular hydraulic oil chamber 6, the upper oil filling port 20 is located on the upper surface of the tire body 1, and the side process port 21 is located on the outer circumferential surface of the tire body 1. The closed screw plug 9 is installed on the upper oil filling port 20 and the side process port 21; thereby, the hydraulic oil is injected into the annular hydraulic oil chamber 6 through the upper oil filling port 20. When in use, the closed screw plug 9 is screwed to compress the hydraulic oil space to generate a clamping force on the spring sleeve 11 and the involute external cylindrical spur gear 12, thereby achieving a tight fixation of the involute external cylindrical spur gear 12.

[0036] The outer diameters of the four involute external cylindrical spur gears 12 and the five spring sleeves 11 are all matched with the inner diameter of the processed hole 10, and the inner ring of the spring sleeve 11 is evenly distributed with teeth that are matched and engaged with the involute external cylindrical spur gears 12; thereby, the spring sleeve 11 and the involute external cylindrical spur gears 12 are more closely fitted, and the involute external cylindrical spur gears 12 are fixed more firmly.

[0037] The utility model injects hydraulic oil into the annular hydraulic oil chamber 6 from the oil injection channel 7, closes the oil injection channel 7 and the oil outlet channel 8 through the closing screw plug 9, places the positioning ring 13 in the processing hole 10, and then places five spring sleeves 11 and four involute external cylindrical spur gears 12 in the processing hole 10 in sequence, and then the hydraulic oil space is compressed by screwing the closing screw plug 9 to generate a clamping force on the spring sleeve 11 and the involute external cylindrical spur gear 12, thereby achieving a tight fixation of the involute external cylindrical spur gear 12, thereby achieving a one-time multi-piece processing of a plurality of involute external cylindrical spur gears 12 fixed in the tire 5; not only is the structure simple and easy to operate, but also does not require complicated workpiece installation steps, while improving processing efficiency, it can also ensure product quality, reduce the production cost of the involute external cylindrical spur gear 12, and indirectly improve the market competitiveness of products using the involute external cylindrical spur gear 12.

[0038] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A gear wire cutting keyway tool, characterized by: The tire comprises a carcass, a receiving hole is arranged in the carcass, an annular boss is arranged at the lower part of the receiving hole, a through hole is arranged in the annular boss which is coaxial with and connected to the receiving hole, an expanding tire abutting on the annular boss is installed in the receiving hole, an annular hydraulic oil chamber is arranged between the expanding tire and the receiving hole, the lower end part of the expanding tire closes the bottom of the annular hydraulic oil chamber, the upper end part of the expanding tire is detachably connected to the carcass and closes the top of the annular hydraulic oil chamber, an oil injection channel which is connected to the annular hydraulic oil chamber is arranged on the carcass, an oil outlet channel which is connected to the annular hydraulic oil chamber is arranged on the expanding tire, closed screw plugs are connected to the oil injection channel and the oil outlet channel, a machining hole which is coaxial with and connected to the receiving hole and the through hole is arranged in the expanding tire, a plurality of spring sleeves are installed in the machining hole, and an involute external cylindrical spur gear is arranged between two upper and lower adjacent spring sleeves.

2. The gear wire cutting keyway tool according to claim 1, characterized in that: A positioning ring is installed in the processing hole, the lower bottom surface of the positioning ring abuts against the annular boss, and an inner ring opening is provided on the positioning ring, which is cocentric with the through hole and the accommodating hole and is connected to the inner diameter of the processing hole. The outer diameter of the positioning ring is adapted to the inner diameter of the processing hole.

3. The gear wire cutting keyway tool according to claim 1, characterized in that: The tire expansion device includes an annular cover plate and a cylindrical body. The cylindrical body is vertically fixed to the lower bottom surface of the annular cover plate. A plurality of threaded holes are provided on the upper part of the annular cover plate and the tire body. Hexagon socket screws are installed on the threaded holes. The plurality of hexagon socket screws are arranged in a circular array around the processed holes on the annular cover plate.

4. The gear wire cutting keyway tool according to claim 3, characterized in that: An annular extension boss is arranged in the middle of the outer circumferential surface of the cylindrical body, the outer diameter of the annular extension boss is matched with the inner diameter of the accommodating hole, and the annular extension boss abuts against the inner wall surface of the accommodating hole.

5. The gear wire cutting keyway tool according to claim 4, characterized in that: The oil outlet channel passes through the annular extension boss and the annular cover plate from bottom to top in sequence, and an upper oil outlet is provided on the upper surface of the annular cover plate. The upper oil outlet is located between a plurality of hexagon socket screws and the processed holes arranged in a circular array, and a closed screw plug is installed on the upper oil outlet.

6. The gear wire cutting keyway tool according to claim 4, characterized in that: An annular sealing boss is arranged at the lower part of the outer circumferential surface of the cylindrical body, an inwardly concave groove is arranged on the outer circumferential surface of the annular sealing boss, and an annular sealing ring is mounted on the groove and sandwiched between the annular sealing boss and the inner wall surface of the accommodating hole.

7. The gear wire cutting keyway tool according to claim 1, characterized in that: The cross section of the oil injection channel is an inverted T-shaped structure, including a lower oil outlet connected to the annular hydraulic oil chamber, an upper oil injection port arranged on the upper surface of the carcass, and a side process port arranged on the outer circumferential surface of the carcass. The closed screw plug is installed on the upper oil injection port and the side process port.

8. The gear wire cutting keyway tool according to claim 1, characterized in that: The outer diameters of a plurality of involute external cylindrical spur gears and a plurality of spring sleeves are all matched with the inner diameter of the processed hole, and teeth matching and engaging with the involute external cylindrical spur gears are evenly distributed on the inner ring of the spring sleeve.

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