Gear assembly finish machining equipment

Abstract

The utility model discloses gear assembly finish machining equipment, and particularly relates to the technical field of gear machining, the gear assembly finish machining equipment comprises a gear shaping machine and a tool rest arranged on the gear shaping machine, and the gear shaping machine comprises a gear shaping cutter assembled at the end of the tool rest and doing reciprocating motion in the vertical direction; the scraping teeth are arranged on the shaft center of the gear shaping cutter and coincide with the vertical projection of the gear shaping cutter in a default state, and cutting parts used for cutting gears are arranged on the scraping teeth. According to the gear assembly finish machining equipment, in the downward moving process of the gear shaper cutter, the cutting part makes contact with the upper surface of the to-be-machined gear, the cutting part is of a structure with the narrow lower portion and the wide upper portion and can be stably wedged into the surface of the to-be-machined gear, then teeth of the gear shaper cutter vertically cut the to-be-machined gear, and errors caused by gear shaking due to cutting are avoided; and when the scraping teeth are located below the gear to be machined, the scraping teeth rotate relative to the slotting cutter and are staggered, and chippings cut on the slotting cutter are scraped down.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, and particularly relates to a fine machining device for a gear assembly. Background Art

[0002] In the process of gear processing, gears are often machined by gear shaping, and the tooth surface of the gear is machined by the reciprocating cutting of a gear shaper cutter to improve the accuracy and finish of the tooth surface.

[0003] Combined with the publication number CN215698540U, the publication date is February 1, 2022, which discloses a numerically controlled gear shaper with high processing efficiency, including a base. The upper end surface of the base is connected with a workbench through four groups of support columns. The left side of the upper end surface of the workbench is provided with a support plate. The upper right end surface of the support plate is connected with a first connecting plate. The lower right end surface of the support plate is connected with a second connecting plate. The upper right end surface of the second connecting plate is connected with a fixing plate. The front side of the fixing plate is rotatably installed with a rotating plate through a rotating shaft. The upper end surface of the second connecting plate and on the left side of the fixing plate is slidably penetrated with a lifting rod. The bottom end of the lifting rod is connected with a gear shaper cutter.

[0004] The above technology drives the gear shaper cutter to move up and down for grinding processing. However, the chips generated during the up and down cutting of the gear shaper cutter will stay on the gear shaper cutter, and when the chips accumulate too much, it will affect the friction between the gear shaper cutter and the gear. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fine machining device for a gear assembly to solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A fine machining device for a gear assembly, including a gear shaper and a tool holder arranged thereon, including:

[0007] A gear shaper cutter assembled at the end of the tool holder and reciprocatingly moving in the vertical direction;

[0008] A shaving cutter arranged on the axis of the gear shaper cutter and coinciding with the vertical projection of the gear shaper cutter in the default state, and a cutting part for cutting the gear is arranged thereon;

[0009] There is a trigger station in the moving stroke of the gear shaper cutter for driving the shaving cutter to stagger with the gear shaper cutter.

[0010] Preferably, a plurality of scraping blades are slidably arranged on the shaving cutter, and when the gear shaper cutter is in the trigger station, the plurality of scraping blades extend out of both sides of the tooth of the shaving cutter.

[0011] Preferably, an elastic member is arranged on the scraping blade, and raised strips for blocking and disassembling cooperation with the scraping blade are arranged on both sides of the tooth of the gear shaper cutter.

[0012] Preferably, the width of the cutting portion is smaller than the tooth of the gear shaper cutter.

[0013] Preferably, a second bevel gear is rotatably arranged at the end of the gear shaper cutter, and the shaving tooth is slidably matched with the second bevel gear through a keyway.

[0014] Preferably, a guiding chute for slidably matching with the shaving tooth is arranged on the gear shaper cutter.

[0015] Preferably, it further includes a driven rotating first bevel gear and a gear ring rotatably arranged on the working surface of the gear shaper and meshing with the first bevel gear.

[0016] Preferably, the second bevel gear meshes and drives with the first bevel gear when the gear shaper cutter is at the triggering station.

[0017] In the above technical solution, a gear assembly finishing equipment provided by the present utility model has the following beneficial effects: during the downward movement of the gear shaper cutter, the cutting portion contacts the upper surface of the gear to be machined. Since the cutting portion has a structure that is narrower at the bottom and wider at the top, it can stably wedge into the surface of the gear to be machined. Subsequently, the tooth of the gear shaper cutter cuts the gear to be machined vertically, avoiding errors caused by gear jitter during cutting. And when the height of the shaving tooth is below the gear to be machined, the shaving tooth rotates relative to the gear shaper cutter and intersects to scrape off the chips cut on the gear shaper cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is an overall three-dimensional schematic diagram provided by an embodiment of the present utility model;

[0020] Figure 2 It is a schematic diagram of the gear shaper cutter and the shaving tooth structure provided by an embodiment of the present utility model;

[0021] Figure 3 It is a schematic diagram of the shaving tooth and the scraper structure provided by an embodiment of the present utility model;

[0022] Figure 4 It is provided by an embodiment of the present utility model Figure 3 The enlarged schematic diagram of A in it.

[0023] Description of the reference numerals:

[0024] 1. gear shaping machine; 2. tool holder; 3. fixed frame; 4. first bevel gear; 5. chip collecting groove; 6. gear ring; 7. gear shaping cutter; 71. raised strip; 72. guide groove; 8. gear scraping; 81. cutting part; 82. scraper; 83. elastic member; 84. protrusion; 9. second bevel gear. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1-4 As shown, a gear assembly finishing device includes a gear shaping machine 1 and a tool holder 2 arranged thereon, including:

[0027] A gear shaping cutter 7 mounted on the end of the cutter holder 2 and reciprocating in the vertical direction;

[0028] A skiving gear 8 is arranged on the axis of the gear shaping cutter 7 and coincides with the vertical projection of the gear shaping cutter 7 in a default state, and is provided with a cutting portion 81 for cutting a gear;

[0029] There is a triggering station in the movable stroke of the gear shaping cutter 7 for driving the gear scraping 8 to interleave with the gear shaping cutter 7.

[0030] Specifically, it also includes a fixing frame 3 for fixing the gear to be processed, the gear to be processed is sleeved on the fixing frame 3, the scraper 8 is rotated and slidably arranged on the gear shaping cutter 7, the driving tool frame 2 drives the gear shaping cutter 7 to move downward in the vertical direction, thereby driving the scraper 8 to move synchronously, at this time, the scraper 8 is in a default state that coincides with the vertical projection of the gear shaping cutter 7, the scraper 8 is completely covered by the gear shaping cutter 7, the width of the cutting portion 81 is smaller than the teeth of the gear shaping cutter 7, so it will not interfere with the processing of the gear, and in the process of moving downward, the cutting portion 81 and the gear to be processed are aligned. The upper surface of the processed gear is in contact. Since the cutting portion 81 is a narrow lower part and wide upper part structure, it can stably wedge into the surface of the gear to be processed. Then the teeth of the gear shaping cutter 7 vertically cut the gear to be processed. During the vertical activity stroke of the gear shaping cutter 7, when the height of the scraper 8 is below the gear to be processed, it is the triggering position. At this time, the scraper 8 is driven to rotate one full circle or multiple circles, so that the scraper 8 rotates and staggers relative to the gear shaping cutter 7, and the debris cut on the gear shaping cutter 7 is scraped off by the scraper 8. After the rotation is completed, the scraper 8 returns to the default state.

[0031] In the above technology, an infrared sensor can be set to detect that the scraper 8 reaches the triggering station, and a signal can be sent to the motor set on the gear shaping cutter 7, so that the motor drives the scraper 8 to rotate; or a timing program can be set on the motor. Since the time for each gear shaping cutter 7 to drive the scraper 8 to move to the bottom of the gear is fixed, the motor is started at a fixed time and drives the scraper 8 to rotate. Or, it can be any technical common sense known to technicians in this field.

[0032] In the above technology, during the downward movement of the gear shaping cutter 7, the cutting portion 81 contacts the upper surface of the gear to be processed. Since the cutting portion 81 is a narrow structure at the bottom and wide at the top, it can stably wedge into the surface of the gear to be processed. Then, the gear to be processed is cut vertically by the teeth of the gear shaping cutter 7 to avoid gear jitter and errors caused by cutting. When the height of the scraper 8 is below the gear to be processed, the scraper 8 rotates and staggers relative to the gear shaping cutter 7 to scrape off the debris cut on the gear shaping cutter 7.

[0033] As an embodiment further provided by the present invention, a plurality of scrapers 82 are slidably provided on the scraper 8 , and the gear inserting cutter 7 is under the triggering position, and the plurality of scrapers 82 extend from both sides of the scraper 8 .

[0034] Specifically, an elastic member 83 is provided on the scraper 82, and raised strips 71 that cooperate with the scraper 82 are provided on both sides of the teeth of the gear shaping cutter 7. The elastic member 83 allows multiple scrapers 82 to extend out of both sides of the teeth of the scraper 8 through its own elasticity. When the scraper 8 and the gear shaping cutter 7 coincide with each other, the raised strips 71 provided on both sides of the teeth of the gear shaping cutter 7 prevent the scraper 82 from extending outward and push the scraper 82 to retract into the scraper 8. At this time, the elastic member 83 is in a state of contraction and accumulation of force. When the scraper 8 and the gear shaping cutter 7 are staggered, the raised strips 71 no longer block the scraper 82, so that the scraper 82 is released by the elasticity of the elastic member 83 and extends to both sides of the scraper 8. When the scraper 8 rotates, it drives the scraper 82 to rotate, so as to better remove the debris on the gear shaping cutter 7.

[0035] As another embodiment further provided by the present invention, a second bevel gear 9 is rotatably provided at the end of the gear inserting cutter 7, and the scraping gear 8 is slidably matched with the second bevel gear 9 through a keyway.

[0036] Specifically, the gear shaping cutter 7 is provided with a guide slide groove 72 that is slidably matched with the scraping gear 8. The guide slide groove 72 is wavy. When the second bevel gear 9 is driven to rotate, the scraping gear 8 is driven to rotate synchronously. Moreover, since the scraping gear 8 is slidably matched with the guide slide groove 72 through the protrusion 84 fixedly arranged on the inner wall, the scraping gear 8 is guided by the guide slide groove 72 during rotation and moves up and down along the gear shaping cutter 7. When the guide slide groove 72 is in a high position, the scraping gear 8 is in close contact with the gear shaping cutter 7. When the slotting cutter 7 rotates, it moves downward, so that the scraper 82 is offset from the raised strip 71, and the scraper 82 extends out of the teeth of the scraper 8 on both sides. When the scraper 8 returns to the default state, the scraper 8 rotates and moves upward, so that the scraper 82 pushes the raised strip 71 upward when rotating relative to the raised strip 71, and is subjected to the downward reaction force of the raised strip 71. Since the upper surface of the scraper 82 is an inclined surface, the scraper 82 is squeezed and retracted into the scraper 8 under the downward reaction force.

[0037] As another embodiment further provided by the present invention, it also includes a first bevel gear 4 that is driven to rotate and a gear ring 6 that is rotatably arranged on the working surface of the gear shaping machine 1 and meshes with the first bevel gear 4 for transmission.

[0038] Specifically, the first bevel gear 4 is driven by a driving motor to keep rotating at a slow speed, the gear ring 6 is coaxial with the fixed frame 3, and the gear ring 6 is located directly above the chip collecting groove 5 opened on the gear shaping machine 1, and a plurality of scraping strips for sweeping dust are arranged in a circumferential array on the gear ring 6. When the first bevel gear 4 rotates, the gear ring 6 is driven to rotate through the meshing transmission, thereby driving the scraping strip to rotate and scrape the debris generated in the cutting process into the chip collecting groove 5.

[0039] As another embodiment further provided by the present invention, the second bevel gear 9 is meshed and driven with the first bevel gear 4 when the gear shaping cutter 7 is located at the triggering position.

[0040] Specifically, the gear scraping 8 is driven downward by the gear shaping cutter 7 during its downward movement, and the gear scraping 8 is meshed and transmitted with the first bevel gear 4 which rotates slowly during the downward movement. At this time, the position of the gear shaping cutter 7 is the triggering position, and the first bevel gear 4 drives the second bevel gear 9 to rotate, thereby driving the gear scraping 8 to rotate synchronously and move up and down along the gear shaping cutter 7.

[0041] Working principle: the first bevel gear 4 is driven by the driving motor to keep rotating at a slow speed. When the first bevel gear 4 rotates, it drives the gear ring 6 to rotate through meshing transmission, thereby driving the scraper bar to rotate and scraping the debris generated in the cutting process into the chip collecting groove 5; the gear shaping cutter 7 drives the scraper 8 to move downward during the downward movement, and the scraper 8 is meshed with the first bevel gear 4 rotating at a slow speed during the downward movement. The first bevel gear 4 drives the second bevel gear 9 to rotate, driving the scraper 8 to rotate synchronously, and because the scraper 8 slides with the guide groove 72 through the protrusion 84 fixed on the inner wall, the scraper 8 is driven to rotate one full circle or multiple circles at this time, so that the scraper 8 rotates relative to the gear shaping cutter 7 and staggered, and the debris cut on the gear shaping cutter 7 is scraped off by the scraper 8 When the gear 8 is in the default state, the scraper 8 moves upward while rotating, so that the scraper 82 pushes the raised strip 71 upward when rotating relative to the raised strip 71, and is subjected to the downward reaction force of the raised strip 71. Since the upper surface of the scraper 82 is an inclined surface, the scraper 82 is squeezed and retracted into the scraper 8 under the downward reaction force. The scraper 8 is in the default state where it coincides with the vertical projection of the gear shaping cutter 7. The scraper 8 is completely covered by the gear shaping cutter 7 and will not interfere with the processing of the gear.

[0042] Only some exemplary embodiments of the present utility model are described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A gear assembly finishing device, comprising a gear shaping machine (1) and a tool holder (2) arranged thereon, characterized in that: include: A gear shaping cutter (7) mounted on the end of the cutter holder (2) and reciprocating in the vertical direction; A scraper (8) disposed on the axis of the gear shaping cutter (7) and coinciding with the vertical projection of the gear shaping cutter (7) in a default state, wherein a cutting portion (81) for cutting a gear is disposed on the scraper; There is a triggering station in the movable stroke of the gear shaping cutter (7) for driving the scraping gear (8) and the gear shaping cutter (7) to interleave.

2. A gear assembly finishing equipment according to claim 1, characterized in that: A plurality of scrapers (82) are slidably arranged on the scraper (8), and the gear inserting cutter (7) is at a triggering position, and the plurality of scrapers (82) extend from both sides of the teeth of the scraper (8).

3. A gear assembly finishing equipment according to claim 2, characterized in that: The scraper (82) is provided with an elastic member (83), and protruding strips (71) are provided on both sides of the teeth of the gear inserting cutter (7) for engaging with the scraper (82) in a blocking manner.

4. The gear assembly finishing equipment according to claim 1, characterized in that: The width of the cutting portion (81) is smaller than the teeth of the gear shaping cutter (7).

5. The gear assembly finishing equipment according to claim 1, characterized in that: A second bevel gear (9) is rotatably arranged at the end of the gear inserting cutter (7), and the scraping teeth (8) are slidably matched with the second bevel gear (9) via a keyway.

6. The gear assembly finishing equipment according to claim 1, characterized in that: The gear inserting cutter (7) is provided with a guide groove (72) which is slidably matched with the scraping gear (8).

7. The gear assembly finishing equipment according to claim 1, characterized in that: It also comprises a first bevel gear (4) driven to rotate and a gear ring (6) rotatably arranged on the working surface of the gear shaping machine (1) and meshing with the first bevel gear (4) for transmission.

8. The gear assembly finishing equipment according to claim 5, characterized in that: The second bevel gear (9) meshes with the first bevel gear (4) for transmission when the gear shaping cutter (7) is located at the triggering position.

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