Gear extruding and chamfering device

Abstract

The utility model particularly relates to a gear extruding and chamfering device. Comprising a clamping part used for fixing a to-be-machined gear and a machining part, the machining part comprises an extrusion rolling disc, a cutting knife and a guide part, the guide part is located below the clamping part, and the extrusion rolling disc and the cutting knife are located on the two sides of the clamping part; the guide part comprises a sliding seat capable of moving in the X direction and the Y direction, and the sliding seat is provided with an adjusting sliding groove and a plurality of sets of adjustable fixing seats. The extrusion rolling disc and the cutting knife are fixedly connected with a group of adjustable fixing seats respectively; the cutter can abut against the end face of the gear to be machined. The gear extruding and chamfering device adopting the scheme has the advantages of being good in machining continuity and high in production efficiency, and automatic production is easy to achieve.

Description

Technical Field

[0001] This utility model relates to a chamfering device, specifically a gear extrusion chamfering device. Background Technology

[0002] After gear machining, the tooth profile needs to be chamfered. Gears without chamfered tooth profiles are prone to fatigue microcracks due to stress concentration during long-term use, resulting in severe tooth breakage at the tooth ends. If this continues, it may lead to serious accidents such as tooth breakage.

[0003] Currently, the extrusion method is commonly used for gear tooth chamfering. However, during the extrusion chamfering process, some material is squeezed onto the end face of the gear. Therefore, after extrusion chamfering, the burrs and excess material squeezed onto the gear end face need to be removed. This requires mounting the gear on a cutting machine again to remove burrs and other excess material, resulting in numerous gear processing steps, excessive processing time, and low production efficiency. Utility Model Content

[0004] The present invention aims to provide a gear extrusion chamfering device, which has the advantages of good processing continuity and high production efficiency, and is easy to automate.

[0005] The gear extrusion and chamfering device in this solution includes a clamping part for fixing the gear to be processed and a processing part. The processing part includes an extrusion roller, a cutting blade, and a guide part. The guide part is located below the clamping part, and the extrusion roller and the cutting blade are located on both sides of the clamping part. The guide part includes a slide block that can move along the X and Y directions. The slide block is provided with an adjusting groove and multiple sets of adjustable fixing seats. The distance between the extrusion roller and the cutting blade is controlled by the adjustable fixing seats, ensuring that there is sufficient distance between them to enter or exit the processing position without interfering with the gear to be processed. The extrusion roller and the cutting blade are respectively fixedly connected to a set of adjustable fixing seats, and there is no backlash between the extrusion roller and the gear to be processed. The cutting blade can abut against the end face of the gear to be processed.

[0006] The advantages of this invention are: after the gear is mounted on the tensioning shaft, the edges and corners of the gear profile are first chamfered by the extrusion roller, compressing the sharp parts into smooth, rounded arcs; then, the Y-axis displacement of the extrusion roller and the cutting tool is controlled by the slide to perform chamfering, deburring, and machining of the gear end face, achieving the goal of performing multiple machining processes after a single clamping and positioning of the gear. After machining, the X-axis displacement is controlled by the slide, allowing the extrusion roller and the cutting tool to simultaneously retract from the machining position, resulting in good machining continuity, high production efficiency, and easy automation.

[0007] Furthermore, the clamping part includes a chuck, a tensioning shaft, and a push rod arranged sequentially along the X direction. The tensioning shaft has positioning holes at both ends that correspond to the push rod. The outer diameter of the tensioning shaft is adapted to the inner diameter of the gear to be processed. The gear to be processed is fitted onto the tensioning shaft, allowing for the simultaneous processing of two gears.

[0008] Furthermore, the adjustable fixing seat includes an adjustable fixing seat for the extrusion roller and an adjustable fixing seat for the cutting blade; the adjustable fixing seat for the extrusion roller includes a set of connecting seats arranged along the Y direction, and a fixing part is fixedly connected to the connecting seats; the adjustable fixing seat for the cutting blade is arranged along the X direction.

[0009] Furthermore, the cutting tool includes a first cutting tool and a second cutting tool, wherein the first cutting tool is located near the clamping part and its blade width is smaller than that of the second cutting tool. This is to prevent interference between the first cutting tool and the clamping part during machining. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the gear extrusion chamfering device of this utility model;

[0011] Figure 2 for Figure 1 A magnified view of middle A;

[0012] Figure 3 This is a partial perspective view of the gear extrusion chamfering device of this utility model;

[0013] Figure 4 This is a partial top view of the gear extrusion chamfering device of this utility model.

[0014] Figure 5 for Figure 4 Enlarged view of middle B;

[0015] Figure 6 for Figure 2 A magnified view of C.

[0016] In the figure, 1 is the extrusion roller, 2 is the cutting blade, 2-1 is the first cutting blade, 2-2 is the second cutting blade, 3 is the guide part, 3-1 is the slide, 4 is the adjusting slide groove, 5-1 is the adjustable fixing seat of the extrusion roller, 5-11 is the connecting seat, 5-12 is the fixing part, 5-2 is the adjustable fixing seat of the cutting blade, 6 is the chuck, 7 is the tensioning shaft, 7-1 is the positioning hole, 8 is the push rod, and 9 is the gear to be processed. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] according to Figures 1 to 5As shown, the gear extrusion chamfering device includes a clamping part for fixing the gear 9 to be processed and a processing part. The processing part includes an extrusion roller 1, a cutting blade 2, and a guide part 3. In this embodiment, two extrusion rollers 1 are preferred, which can simultaneously chamfer the tooth profiles at both ends of the gear. Two cutting blades 2 are preferred. When the cutting blades 2 enter the processing position, the gear 9 to be processed is located between the two cutting blades 2. It can be processed on both ends of the gear by moving along the X direction through the slide 3-1. The guide part 3 is located below the clamping part, and the extrusion roller 1 and the cutting blade 2 are located on both sides of the clamping part. The guide part 3 includes a slide 3-1 that can move along the X and Y directions. The slide 3-1 is provided with an adjusting slide groove 4 and multiple sets of adjustable fixing seats. In this embodiment, the adjusting slide groove 4 is preferably a T-shaped groove, and the adjustable fixing seats are connected to the T-shaped groove by bolts and nuts. The distance between the extrusion roller 1 and the cutting blade 2 is controlled by the adjustable fixing seats, so that there is enough distance between them to enter or exit the processing position without interfering with the gear 9 to be processed. The extrusion roller 1 and the cutting blade 2 are respectively fixedly connected to a set of adjustable fixed seats. The cutting blade 2 can abut against the end face of the gear 9 to be processed. After processing, the extrusion roller 1 and the cutting blade 2 can be simultaneously withdrawn from the processing position by controlling the X-axis displacement through the slide 3-1.

[0019] As a further improvement of this utility model, the clamping part includes a chuck 6, a tensioning shaft 7, and a push rod 8 arranged sequentially along the X direction. The tensioning shaft 7 has positioning holes 7-1 at both ends that are adapted to the push rod 8. In this embodiment, the top end of the push rod 8 is preferably conical, and the positioning hole 7-1 is a stepped conical hole to prevent the push rod 8 from abutting against the bottom of the positioning hole 7-1. The outer diameter of the tensioning shaft 7 is adapted to the inner diameter of the gear 9 to be processed. In this embodiment, the chuck 6 is preferably a three-jaw chuck 6.

[0020] As a further improvement of this utility model, the adjustable fixing seat includes an adjustable fixing seat 5-1 for the extrusion roller and an adjustable fixing seat 5-2 for the cutting blade; the adjustable fixing seat 5-1 for the extrusion roller includes a set of connecting seats 5-11 arranged along the Y direction, and a fixing part 5-12 is fixedly connected to the connecting seats 5-11; the adjustable fixing seat 5-2 for the cutting blade is arranged along the X direction.

[0021] As a further improvement of this utility model, the cutting tool 2 includes a first cutting tool 2-1 and a second cutting tool 2-2, with the first cutting tool 2-1 located near the clamping part. To reduce the vibration when the tensioning shaft 7 rotates, the length of the tensioning shaft 7 needs to be shortened, so the distance between the end face of the gear being machined and the clamping part is small. When the cutting tool 2 is machining, to prevent interference between the first cutting tool 2-1 and the clamping part during machining, the width of the blade of the first cutting tool 2-1 is smaller than that of the second cutting tool 2-2.

[0022] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A gear extrusion and chamfering device, comprising a clamping part for fixing the gear to be processed and a processing part, characterized in that: The processing unit includes an extrusion roller, a cutting blade, and a guide unit. The guide unit is located below the clamping unit, and the extrusion roller and the cutting blade are located on both sides of the clamping unit. The guide unit includes a slide that can move along the X and Y directions. The slide is provided with an adjusting groove and multiple sets of adjustable fixed seats. The extrusion roller and the cutting blade are respectively fixedly connected to a set of adjustable fixed seats. The cutting blade can abut against the end face of the gear to be processed.

2. The gear extrusion chamfering device according to claim 1, characterized in that: The clamping part includes a chuck, a tensioning shaft, and a push rod arranged sequentially along the X direction. The tensioning shaft has positioning holes at both ends that are adapted to the push rod. The outer diameter of the tensioning shaft is adapted to the inner diameter of the gear to be processed.

3. The gear extrusion chamfering device according to claim 1, characterized in that: The adjustable fixing base includes an adjustable fixing base for the extrusion roller and an adjustable fixing base for the cutting blade; the adjustable fixing base for the extrusion roller includes a set of connecting seats arranged along the Y direction, and a fixing part is fixedly connected to the connecting seats; the adjustable fixing base for the cutting blade is arranged along the X direction.

4. The gear extrusion chamfering device according to claim 1, characterized in that: The cutting tool includes a first cutting tool and a second cutting tool, wherein the first cutting tool is located near the clamping part and its blade width is smaller than that of the second cutting tool.

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