Gear burr turning and edge extruding device

Abstract

The utility model discloses a gear burr turning and edge extruding device which comprises a gear clamping mechanism, a burr turning working head and an edge extruding working head, and the burr turning working head and the edge extruding working head are arranged on the two opposite sides of the gear clamping mechanism respectively and can conduct burr turning action and edge extruding action respectively. The gear clamping mechanism is used for clamping and positioning a machined gear and comprises a gear fixing base, the rear end of the gear fixing base is installed on a flange, the flange is connected with a main shaft, a gear connecting shaft used for sleeving the machined gear is arranged at the front end of the gear fixing base, and a gear tip capable of abutting against the machined gear is installed on the gear connecting shaft. And the gear center is connected with a live center on a tailstock of the numerical control lathe. By means of the mode, the gear burr turning and edge extruding device can continuously complete three working procedures on the same device through one-time clamping, the working procedures are highly integrated, production efficiency is greatly improved, the problem of scrapping caused by meshing of top teeth is solved, and machining is more flexible and efficient.

Description

Technical Field

[0001] This utility model relates to the field of gear processing tooling technology, and in particular to a gear turning burr extrusion device. Background Technology

[0002] The conventional hobbing followed by extrusion, or the use of a separate extrusion machine for extrusion processing, both of these processing methods use the extrusion cutter as the power source, and the gears on the workpiece are meshed and followed, both of which suffer from low efficiency.

[0003] Specifically:

[0004] In the conventional hobbing and extrusion process, the extrusion cutter spindle lacks operational flexibility and cannot be programmed as conveniently and precisely as a CNC lathe. This results in the teeth of the parts being easily damaged during the extrusion meshing and gear alignment process, leading to scrapping. In severe cases, it can even cause tooling damage and production line shutdown.

[0005] While using a separate extrusion device to extrude gears can prevent scrapping, the entire process is cumbersome and time-consuming.

[0006] The process involves first deburring the gear end face, then transferring it between processes for extrusion, and then transferring it again to machine the end face burrs once more. While this method ensures product quality, it comes at the cost of reduced production capacity, which does not align with the principles of mass production efficiency and cost reduction. Utility Model Content

[0007] The main technical problem solved by this utility model is to provide a gear deburring and extrusion device that can continuously complete three processes in one clamping on the same machine. The process is highly integrated, the production efficiency is greatly improved, and the scrap problem caused by meshing teeth is solved. It can meet the processing needs of different types of products and is more flexible and efficient.

[0008] To solve the above-mentioned technical problems, the present invention provides a gear deburring and extrusion device, comprising: a CNC lathe, a gear clamping mechanism, a deburring head, and an extrusion head located within the CNC lathe.

[0009] The gear clamping mechanism is used to clamp and position the gear to be machined, and includes: a gear fixing seat, the rear end of which is mounted on a flange connected to the spindle of a CNC lathe; the front end of the gear fixing seat has a gear connecting shaft for mounting the gear to be machined, and a gear tip capable of holding the gear to be machined is mounted on the gear connecting shaft; the gear tip is configured to connect to a rotary tip on the tailstock of the CNC lathe.

[0010] The deburring head and the shaving head are respectively located on opposite sides of the gear clamping mechanism, and can respectively perform deburring and shaving actions on the gear being processed.

[0011] In a preferred embodiment of the present invention, the gear tip can abut against the front end face of the gear being processed, and the rear end face of the gear being processed is abutted against the stepped surface of the gear connecting shaft.

[0012] In a preferred embodiment of this utility model, the gear fixing seat is locked and fixed on the flange, and the flange is locked and fixed on the CNC lathe spindle.

[0013] In a preferred embodiment of the present invention, the deburring head includes a deburring fixture disposed on the CNC lathe worktable, and a deburring cutter is mounted on the deburring fixture. When the deburring fixture is driven, it drives the deburring cutter to move relative to the gear being processed on the gear clamping mechanism for deburring.

[0014] In a preferred embodiment of this utility model, the burr removal action includes removing burrs from the end face of the gear hobbing teeth and removing burrs from the extrusion edges.

[0015] In a preferred embodiment of this utility model, the extrusion head includes a housing, a rear cover, a non-powered extrusion spindle, and an extrusion blade. The non-powered extrusion spindle is coaxially mounted inside the housing, with its front end extending out of the front end of the housing. The rear end of the housing is coaxially connected to the rear cover. An extrusion blade is mounted on the front end of the non-powered extrusion spindle. When driven, the non-powered extrusion spindle drives the extrusion blade to move relative to the gear being processed on the gear clamping mechanism for extrusion.

[0016] In a preferred embodiment of the present invention, a limiting groove is provided on the inner wall of the front and rear ends of the housing, and a bearing is sleeved on the outer side of the non-powered extrusion spindle, and the bearing is disposed in the limiting groove.

[0017] In a preferred embodiment of the present invention, a nut is sleeved at the rear end of the non-powered extrusion spindle for axially locking the bearing, and an oil seal is provided between the front end of the housing and the non-powered extrusion spindle for dust prevention.

[0018] In a preferred embodiment of the present invention, a flat key is installed between the front end of the non-powered extrusion spindle and the extrusion knife. One side of the flat key is connected to the non-powered extrusion spindle, and the other end of the flat key is in close contact with the non-working surface of the extrusion knife.

[0019] In a preferred embodiment of the present invention, the front end of the non-powered extrusion spindle has a pressure block and a locking nut. The pressure block is configured to be connected to the non-powered extrusion spindle and the extrusion blade to compensate for the width of the extrusion blade. The locking nut is connected to the front end of the powered extrusion spindle to fix the pressure block and the extrusion blade.

[0020] The beneficial effects of this utility model are: it can complete three processes continuously in one clamping on the same machine, the processing process is highly integrated, the production efficiency is greatly improved, and the problem of scrapped parts caused by meshing teeth is eliminated. It has versatility and can meet the processing of different types of products, improving the flexibility and efficiency of processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the gear clamping mechanism of this utility model;

[0023] Figure 2 This is a cross-sectional view of a preferred embodiment of the gear clamping mechanism of this utility model;

[0024] Figure 3 This is a three-dimensional structural schematic diagram of a preferred embodiment of the extrusion working head of this utility model;

[0025] Figure 4 This is a cross-sectional view of a preferred embodiment of the extrusion head of this utility model;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of a preferred embodiment of the gear deburring and burr extrusion device of this utility model;

[0027] Figure 6 This is a three-dimensional structural schematic diagram of a preferred embodiment of the gear deburring and burr extrusion device of this utility model;

[0028] The components in the attached diagram are labeled as follows:

[0029] 1. Gear being machined; 2. Gear holder; 3. Gear connecting shaft; 4. Flange; 5. Spindle; 6. Gear center; 7. Tailstock; 8. Rotary center; 9. Deburring fixture; 10. Deburring tool.

[0030] 11. Housing, 12. Rear cover, 13. Non-powered extrusion spindle, 14. Extrusion knife, 15. Bearing, 16. Nut, 17. Oil seal, 18. Flat key, 19. Pressure block, 20. Locking nut. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0033] Please see Figure 1-2 This embodiment relates to a gear clamping mechanism for clamping and positioning the gear 1 to be processed. It can be adapted to be installed on a common flat-rail CNC lathe and is suitable for removing burrs, extrusion burrs and extrusion burrs on the end face of gear hobbing. It includes a gear fixing seat 2 and a gear connecting shaft 3.

[0034] Specifically, the rear end of the gear holder 2 is mounted on a flange 4, which is further connected to the spindle 5 of the CNC lathe. By driving the spindle 5 of the CNC lathe, the gear holder 2 and the gear it is fixed with can be provided with power.

[0035] More preferably, the gear fixing seat 2 is locked and fixed to the flange 4 by an internal hexagon screw, and the flange 4 is locked and fixed to the CNC lathe spindle 5 by an internal hexagon screw.

[0036] Secondly, the front end of the gear fixing seat 2 has a gear connecting shaft 3 for mounting the gear 1 to be processed. A gear tip 6 that can hold the gear to be processed is installed on the gear connecting shaft 3. The gear tip 6 is used for axial fixation and centering of the gear 1 to be processed. The gear tip 6 is configured to be connected to the rotary tip 8 on the tailstock 7 of the CNC lathe to ensure the stability and accuracy of the entire processing.

[0037] More preferably, the gear tip 6 can accurately abut against the front end face of the gear 1 being processed, and the rear end face of the gear 1 being processed is abutted against the stepped surface of the gear connecting shaft 3.

[0038] The CNC lathe spindle 5 will drive the flange 4 and the gear fixing seat 2 to rotate together. Due to the tight fit between the gear connecting shaft 3 and the gear 1 being machined, the gear 1 being machined will also rotate together with the gear connecting shaft 3, and then undergo subsequent deburring and extrusion operations. Example

[0039] Please see Figure 3-6 This embodiment relates to a gear deburring and extrusion device, including a CNC lathe, a gear clamping mechanism, a deburring head, and an extrusion head located within the CNC lathe.

[0040] The gear clamping mechanism adopts the gear clamping mechanism in Embodiment 1. The burr-cutting working head and the rib-extending working head are respectively arranged on opposite sides of the gear clamping mechanism, which can respectively perform burr-cutting and rib-extending actions on the gear being processed.

[0041] Specifically, the first is the deburring head, which can deburr the end face of gear hobbing and the extrusion burr. It includes a deburring fixture 9 and a deburring cutter 10.

[0042] The burr cutter 10 is mounted on the burr clamp 9. When the burr clamp 9 is driven, it causes the burr cutter 10 to move relative to the gear 1 being processed on the gear clamping mechanism for burr removal.

[0043] Secondly, there is the extrusion head, which enables extrusion operations. It includes a housing 11, a rear cover 12, a non-powered extrusion spindle 13, and an extrusion blade 14.

[0044] The unpowered extrusion spindle 13 is coaxially mounted inside the housing 11. The front end of the unpowered extrusion spindle 13 extends out of the front end of the housing 11. The rear end of the housing 11 is coaxially connected to the rear cover 12. An extrusion blade 14 is mounted on the front end of the unpowered extrusion spindle 13. When the unpowered extrusion spindle 13 is driven, it drives the extrusion blade 14 to move relative to the work-grinding gear 1 on the gear clamping mechanism for extrusion.

[0045] Furthermore, the inner walls of the front and rear ends of the housing 11 are provided with limiting grooves, and the outer side of the unpowered extrusion spindle 13 is fitted with a bearing 15. The bearing 15 plays the role of supporting the unpowered extrusion spindle. The bearing 15 is set in the limiting groove, which ensures that the bearing 15 and the unpowered extrusion spindle 13 are in a stable position within the housing and are not prone to displacement or shaking.

[0046] Furthermore, a nut 16 is fitted to the rear end of the unpowered extrusion spindle 13 to axially lock the bearing 15, which serves as a pre-tightening and fixing function, thereby improving the stability and reliability of the entire unpowered extrusion spindle 13; an oil seal 17 is also provided between the front end of the housing 11 and the unpowered extrusion spindle 13 to prevent dust and prevent iron filings from entering the internal bearing.

[0047] Furthermore, a flat key 18 is installed between the front end of the non-powered extrusion spindle 13 and the extrusion cutter. One side of the flat key 18 is connected to the non-powered extrusion spindle 13, and the other end of the flat key 18 contacts and fits tightly with the non-working surface of the extrusion cutter 14, which is used to provide radial limiting and fixing function when the extrusion cutter is working.

[0048] Furthermore, the front end of the unpowered extrusion spindle 13 has a pressure block 19 and a locking nut 20. The pressure block 19 is configured to connect to the unpowered extrusion spindle 13 and the extrusion cutter 14 to compensate for the width of the extrusion cutter, ensuring that the extrusion cutter can be stably mounted on the unpowered extrusion spindle 13. The locking nut 20 is connected to the front end of the powered extrusion spindle 13 to fix the pressure block 19 and the extrusion cutter 14, preventing them from loosening or shifting during processing.

[0049] The operation flow of the gear deburring device in this embodiment is as follows:

[0050] First, remove burrs from the end face of the gear hobbing machine: Since there will be flanged burrs on one side of the end face of the gear 1 after hobbing, which will affect the extrusion operation, the burrs must be removed first.

[0051] Start the lathe, so that the deburring fixture 9 is driven to drive the deburring cutter 10 to gradually approach the end face of the gear 1 to be machined according to the set parameters. The cutting edge of the deburring cutter 10 contacts the burr on the end face of the gear and begins to cut. After the cutting is completed, it gradually returns to the initial position so that the burr on the next tooth end can be cut.

[0052] Second, edge forming: After the burr removal operation on the gear hobbing end face is completed, the burr removal cutter 10 retracts, and the edge forming cutter 14 begins to edge the gear 1 being machined:

[0053] When meshing begins, the spindle 5 rotates at a low speed to ensure that the teeth of the extrusion cutter 14 can mesh smoothly with the teeth of the gear 1 being processed. After successful meshing, the spindle 5 begins to increase its speed, causing the gear 1 being processed to rotate and simultaneously driving the extrusion cutter 14 on the unpowered extrusion spindle 13 to be driven. After completing the clockwise extrusion, the spindle 5 stops and then rotates counterclockwise to ensure that both sides of the workpiece teeth can be extruded.

[0054] Third, deburring: After the edge is extruded, the edge extrusion cutter 14 retracts, and there will be flanged burrs on both sides of the workpiece edge. At this time, the deburring cutter moves again to remove the burrs on both sides.

[0055] The processing flow of the deburring and extrusion device of this utility model is the opposite of the processing flow of the prior art. The gear to be processed is mounted on the spindle tooling of the CNC lathe, and the tailstock uses the improved gear tip to center the workpiece.

[0056] Meanwhile, a non-powered extrusion spindle is added to the CNC lathe's tool rack. The extrusion tool is mounted on the non-powered extrusion spindle to achieve three processing operations: first, the gear hobbing burr is cut; then, the extrusion is performed; and finally, the extrusion end face burr is cut. The same machine and the same clamping are used to perform three processing operations.

[0057] This utility model integrates processes, increasing efficiency by more than three times, and avoids the scrapping of meshing top teeth. If different products need to be extruded, only the cutting tools and parts need to be replaced. The non-powered extrusion spindle is universal, and multiple special machines can be prepared for processing. By removing the non-powered extrusion spindle, the equipment can be restored to a regular flat-rail CNC lathe, achieving two uses in one machine.

[0058] The beneficial effects of this utility model gear deburring and burring device are:

[0059] It can complete three processes in one clamping on the same machine: first, it cuts the burrs produced by gear hobbing, then it performs the extrusion operation, and finally it cuts the burrs on the rear face of the extrusion.

[0060] The highly integrated processing steps increase production efficiency by more than three times, completely eliminating the problem of parts scrap caused by meshing teeth. It is versatile and can meet the processing needs of different types of products.

[0061] By simply removing the non-powered extrusion spindle, the equipment can be restored to a regular flat-rail CNC lathe, achieving dual functionality and improving processing flexibility and efficiency.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A burr extrusion device for a gear car, characterized in that, include: CNC lathe, and the gear clamping mechanism, deburring head and extrusion head located within the CNC lathe. The gear clamping mechanism is used to clamp and position the gear to be machined, and includes: a gear fixing seat, the rear end of which is mounted on a flange connected to the spindle of a CNC lathe; the front end of the gear fixing seat has a gear connecting shaft for mounting the gear to be machined, and a gear tip capable of holding the gear to be machined is mounted on the gear connecting shaft; the gear tip is configured to connect to a rotary tip on the tailstock of the CNC lathe. The deburring head and the shaving head are respectively located on opposite sides of the gear clamping mechanism, and can respectively perform deburring and shaving actions on the gear being processed.

2. The gear deburring and burr extrusion device according to claim 1, characterized in that, The gear tip can abut against the front end face of the gear being processed, and the rear end face of the gear being processed is abutted against the stepped surface of the gear connecting shaft.

3. The gear deburring device according to claim 1, characterized in that, The gear mounting base is locked and fixed to the flange, and the flange is locked and fixed to the CNC lathe spindle.

4. The gear deburring device according to claim 1, characterized in that, The deburring head includes a deburring fixture mounted on the CNC lathe worktable. A deburring cutter is mounted on the deburring fixture. When the deburring fixture is driven, it causes the deburring cutter to move relative to the gear being processed on the gear clamping mechanism for deburring.

5. The gear deburring device according to claim 4, characterized in that, The burring action includes burring the end face of the gear hobbing and burring the extrusion edge.

6. The gear deburring device according to claim 1, characterized in that, The extrusion head includes a housing, a rear cover, a non-powered extrusion spindle, and an extrusion cutter. The non-powered extrusion spindle is coaxially mounted inside the housing, with its front end extending out of the front end of the housing. The rear end of the housing is coaxially connected to the rear cover. An extrusion cutter is mounted on the front end of the non-powered extrusion spindle. When driven, the non-powered extrusion spindle drives the extrusion cutter to move relative to the gear being processed on the gear clamping mechanism for extrusion.

7. The gear deburring device according to claim 6, characterized in that, Limiting grooves are provided on the inner walls of the front and rear ends of the housing, and a bearing is sleeved on the outer side of the non-powered extrusion spindle, and the bearing is set in the limiting groove.

8. The gear deburring device according to claim 6, characterized in that, The rear end of the non-powered extrusion spindle is also fitted with a nut for axially locking the bearing, and an oil seal is also provided between the front end of the housing and the non-powered extrusion spindle for dust prevention.

9. The gear deburring device according to claim 6, characterized in that, A flat key is installed between the front end of the non-powered extrusion spindle and the extrusion cutter. One side of the flat key is connected to the non-powered extrusion spindle, and the other end of the flat key is in close contact with the non-working surface of the extrusion cutter.

10. The gear deburring device according to claim 6, characterized in that, The front end of the non-powered extrusion spindle has a pressure block and a locking nut. The pressure block is configured to connect to the non-powered extrusion spindle and the extrusion blade to compensate for the width of the extrusion blade. The locking nut is connected to the front end of the powered extrusion spindle to fix the pressure block and the extrusion blade.

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