A numerical control machine tool shaving machine

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By setting a connecting hole and an extrusion plate structure on the shaving cutter head, cutting fluid is sprayed to remove debris from the tooth surface and the shaving cutter, solving the problem of debris adhesion when shaving machines are machining hard gears, improving machining accuracy and stability, and reducing the use of cutting fluid and energy consumption for recycling.

CN122480403APending Publication Date: 2026-07-31CHONGQING QIJIANG DISTRICT HUAFENG TRANSMISSION CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: CHONGQING QIJIANG DISTRICT HUAFENG TRANSMISSION CO LTD
Filing Date: 2026-05-09
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

When machining gears with high hardness, existing gear shaving machines tend to produce small and hard chips that adhere to the tooth surface or shaving cutter, causing squeezing contact, resulting in tooth surface scratches and damage, which affects machining accuracy and reliability.

Method used

A connecting hole is provided on the shaving cutter head for spraying cutting fluid. Combined with the irregular groove of the extrusion plate and the positioning shaft, it removes the debris attached to the tooth surface and the shaving cutter. At the same time, it cools and lubricates by spraying, reducing the amount of cutting fluid used.

Benefits of technology

It effectively removes debris, prevents tooth surface scratches, improves machining accuracy and stability, reduces cutting fluid usage, and lowers energy consumption during recovery.

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Abstract

This application relates to the field of gear shaving machine technology and discloses a CNC machine tool gear shaving machine, including a gear shaving assembly. The gear shaving assembly has a positioning shaft with both ends fixedly mounted on the gear shaving machine. A gear disk is fixedly sleeved on the left side of the outer surface of the gear shaving assembly. The gear shaving assembly includes a gear cutting disc, and the gear cutting disc has several sets of connecting holes inside. One end of each connecting hole extends to the outer surface of the gear cutting disc and is arranged along a spiral gear cutter. In this CNC machine tool gear shaving machine, the gear cutting disc and its structure, when there is a relative rotational movement between the gear cutting disc and the positioning shaft, under the squeezing action of the shaped groove and the linkage groove, can force the extrusion plate at the corresponding position to move outward to squeeze the cutting fluid in the corresponding variable chamber and spray it out from the connecting hole at the corresponding position, thereby removing fine debris adhering to the gear teeth and the gear cutter of the gear cutting disc.

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Description

Technical Field

[0001] This application relates to the field of gear shaving machine technology, and more particularly to a CNC machine tool gear shaving machine. Background Technology

[0002] A gear shaving machine is a cutting device for finishing gear teeth. Based on the principle of helical gear meshing, the shaving cutter drives the gear or the gear drives the shaving cutter to force it to rotate freely. This causes the gear to move back and forth along the axial direction or at the angle formed with the axis, thereby achieving micro-cutting and correction of the gear teeth to improve its surface finish. However, during the operation of existing gear shaving machines, the high hardness of the gears results in small and hard chips that easily adhere to the tooth surface or the shaving cutter. As a result, during the operation of the gear shaving machine, the chips are squeezed by the shaving cutter and come into contact with the tooth surface, which easily causes scratches and damage to the tooth surface. This results in a large degree of uncertainty and poor reliability for the precision machining of the tooth surface. Summary of the Invention

[0003] This application proposes a CNC machine tool gear shaving machine that, while utilizing cutting fluid for cooling and lubrication, can effectively remove fine debris, preventing adverse effects on the tooth surface during shaving. This significantly improves the machining accuracy, stability, and reliability of the gear shaving machine. It addresses the problem that existing gear shaving machines produce small, hard debris during operation due to the high hardness of the gears, which easily adheres to the tooth surface or shaving cutter. This debris, subjected to pressure from the shaving cutter and the tooth surface during operation, easily causes scratches and damage to the tooth surface.

[0004] To achieve the above objectives, this application adopts the following technical solution: a CNC machine tool gear shaving machine, comprising a gear shaving assembly. The gear shaving assembly has a positioning shaft with both ends fixedly mounted on the gear shaving machine. The bottom of the outer surface of the gear shaving assembly meshes with a gear mounted on the gear shaving machine. A gear disk is fixedly sleeved on the left side of the outer surface of the gear shaving assembly and meshes with an external drive mechanism. The gear disk drives the gear shaving assembly to rotate, performing gear shaving operations on the gear meshing with it. The gear shaving assembly includes gear shaving... The shaving cutter disc has several sets of connecting holes for spraying cutting fluid inside. One end of each connecting hole extends to the outer surface of the shaving cutter disc and is arranged along the spiral gear cutter on it, while the other end of the connecting hole extends into the inner cavity of the shaving cutter disc. Thus, during the meshing and shaving process between the shaving cutter disc and the gear component, the cutting fluid can be sprayed outward along the tooth surface of the gear component through the connecting holes, so as to effectively remove the fine debris adhering to the tooth surface of the gear component and the gear cutter on the shaving cutter disc, and prevent it from scratching and damaging the tooth surface of the gear component. The inner wall of the shaving cutter disc is provided with three sets of positioning strips arranged in a circular array along its central axis. Between each pair of adjacent positioning strips, there is a set of extrusion plates. The inner wall of the extrusion plates slides and rubs against the outer surface of the positioning shaft to provide support. A variable chamber for temporarily storing cutting fluid can be formed between the outer end of each set of extrusion plates and the inner wall of the corresponding section of the shaving cutter disc. A linkage groove is provided on the inner end face of the extrusion plates. A special groove that cooperates with the linkage groove is provided on the outer surface of the positioning shaft. A set of end cap assemblies that are movably sleeved with the outer surface of the positioning shaft are provided on both sides of the shaving cutter disc. When the shaving cutter disc and the positioning shaft rotate relative to each other, the extrusion plates at the corresponding positions can be forced to move outward under the extrusion cooperation of the special grooves and the linkage grooves to extrude the cutting fluid in the corresponding variable chamber and spray it out from the connecting hole at the corresponding position to remove the fine debris adhering to the gear teeth and the gear cutter of the shaving cutter disc. Meanwhile, the cutting fluid is sprayed onto the gear teeth and the shaving cutter head to remove fine debris adhering to the gear teeth and the shaving cutter head. This process also cools and lubricates the gears. Furthermore, the spraying method effectively reduces the amount of cutting fluid used by the shaving machine and significantly reduces the energy consumption required for cutting fluid recycling.

[0005] Furthermore, the shaving cutter disc has a first slot at both ends and between two adjacent sets of positioning strips, a second slot in the middle of both sides of the bottom end of the extrusion plate, and a third slot on the inner end of the end cap assembly. The positions of the first slot, the second slot and the third slot correspond to each other and an elastic element with a ring structure is engaged thereon. Thus, when the extrusion plate at the corresponding position is not under force, it can be forced to move automatically inward under the elastic force of the elastic element to open the variable chamber to facilitate the flow of cutting fluid.

[0006] Furthermore, a guide hole is provided on the inner end face of the end cap assembly, corresponding to the position of the third slot. The other end of the guide hole extends to the outer surface of the end cap assembly and communicates with the connecting slot on the shaving disc. A sliding sealing ring communicating with the connecting slot is movably sleeved on one side of the outer surface of the shaving disc. The sliding sealing ring is connected to an external oil pump through a hose. Thus, the cutting fluid can be delivered to the variable chamber formed by the outer end of the extrusion plate and the inner wall of the corresponding section of the shaving disc through the sliding sealing ring, the connecting slot, and the guide hole.

[0007] Furthermore, the inner and outer wide surfaces of the extrusion plate are designed with an arc shape, and its outer arc shape is the same as the arc trajectory of the inner wall of the shaving cutter disc. The narrow surfaces on the left and right sides of the extrusion plate are designed with parallel planar structures. This ensures the relative sealing of the variable chamber during the movement of the extrusion plate, and at the same time, allows the cutting fluid in the variable chamber to be completely discharged when it is squeezed.

[0008] Furthermore, the outer surface of the shaving cutter disc is provided with several sets of chip removal grooves arranged in a circular array along its central axis, and the installation position of the positioning strip corresponds to the opening position of the chip removal grooves, thereby ensuring that each set of connecting holes can spray cutting fluid at a specific position during the rotation of the shaving cutter disc, and that the connecting holes will not be blocked due to the installation of the positioning strip.

[0009] The beneficial effects of this invention are as follows: 1. The CNC machine tool gear shaving machine provided in this application, with the gear shaving cutter disc and its structure configured such that, when the gear shaving cutter disc and the positioning shaft rotate relative to each other, the extrusion plate at the corresponding position can be forced to move outward under the squeezing action of the irregular groove and the linkage groove, so as to squeeze the cutting fluid in the corresponding variable chamber and make it spray out from the connecting hole at the corresponding position, so as to remove the fine debris adhering to the tooth surface of the gear and the gear cutter disc. In this way, it can effectively avoid the problem that fine and hard debris will come into contact with the tooth surface of the gear due to the squeezing of the gear shaving disc during the operation of the gear shaving machine, causing scratches and damage to the tooth surface.

[0010] 2. The CNC machine tool gear shaving machine provided in this application, with the setting of the gear shaving cutter head and its structure, sprays the cutting fluid onto the gear tooth surface and the gear cutter head and gear cutter head by spraying to remove the fine debris attached to the gear tooth surface and the gear cutter head and gear cutter head. At the same time, it can cool and lubricate them. In addition, the spraying method can effectively reduce the amount of cutting fluid used by the gear shaving machine and greatly reduce the energy consumption required for the recycling of cutting fluid. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the front of the present invention; Figure 3 This is a schematic diagram of the shaving assembly of the present invention; Figure 4 This is a schematic diagram of the shaving disc of the present invention; Figure 5 This is a schematic diagram of the positioning shaft of the present invention; Figure 6 This is a schematic diagram of the extrusion plate of the present invention; Figure 7 This is a schematic diagram of the end cap assembly of the present invention; Figure 8 This is a front view of the shaving assembly of the present invention; Figure 9 For the present invention Figure 8 Sectional view at point AA.

[0012] In the figure: 1-Shaving assembly, 2-Positioning shaft, 3-Gear component, 4-Shaving cutter disc, 5-Connecting hole, 6-Positioning strip, 7-First slot, 8-Extrusion plate, 9-Linkage groove, 10-Second slot, 11-Irregular groove, 12-End cap assembly, 13-Guide hole, 14-Connecting groove hole, 15-Third slot, 16-Sliding sealing ring, 17-Elastic component. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] like Figure 1 , Figure 2 As shown, a CNC machine tool gear shaving machine includes a gear shaving assembly 1. The gear shaving assembly 1 has a positioning shaft 2 with both ends fixedly mounted on the gear shaving machine. The bottom of the outer surface of the gear shaving assembly 1 meshes with a gear 3 mounted on the gear shaving machine. A gear disk is fixedly sleeved on the left side of the outer surface of the gear shaving assembly 1 and meshes with an external drive mechanism. The gear disk drives the gear shaving assembly 1 to rotate, performing gear shaving operations on the gear 3 meshing with the gear shaving assembly 1. Figures 3-7As shown, the shaving assembly 1 includes a shaving disc 4. The shaving disc 4 has several sets of connecting holes 5 for spraying cutting fluid inside. One end of the connecting hole 5 extends to the outer surface of the shaving disc 4 and is arranged along the spiral gear cutter on it, while the other end of the connecting hole 5 extends into the inner cavity of the shaving disc 4. Thus, during the meshing and shaving process between the shaving disc 4 and the gear 3, the cutting fluid can be sprayed outward along the tooth surface of the gear 3 through the connecting hole 5, so as to effectively remove the fine debris attached to the tooth surface of the gear 3 and the gear cutter of the shaving disc 4, and prevent it from scratching and damaging the tooth surface of the gear 3. Three sets of positioning strips 6 arranged in a circular array are provided on the inner wall of the shaving cutter disc 4 along its central axis. A set of extrusion plates 8 is provided between each pair of adjacent sets of positioning strips 6. The inner wall of the extrusion plate 8 slides and rubs against the outer surface of the positioning shaft 2 to provide support. A variable chamber for temporarily storing cutting fluid can be formed between the outer end of each set of extrusion plates 8 and the inner wall of the corresponding section of the shaving cutter disc 4. A linkage groove 9 is provided on the inner end face of the extrusion plate 8, and the outer surface of the positioning shaft 2 is provided with a groove that matches the linkage groove 9. The shaped groove 11 is combined with the end cap assembly 12 on both sides of the shaving cutter disc 4, which is movably sleeved with the outer surface of the positioning shaft 2. When the relative rotation between the shaving cutter disc 4 and the positioning shaft 2 occurs, the extrusion plate 8 at the corresponding position can be forced to move outward under the extrusion cooperation of the shaped groove 11 and the linkage groove 9 to extrude the cutting fluid in the corresponding variable chamber and make it spray out from the connecting hole 5 at the corresponding position to remove the small debris attached to the tooth surface of the gear part 3 and the gear cutter of the shaving cutter disc 4. Meanwhile, the cutting fluid is sprayed onto the tooth surface of gear 3 and the gear cutter of shaving disc 4 to remove fine debris adhering to the tooth surface of gear 3 and the gear cutter of shaving disc 4. At the same time, it can cool and lubricate them. Furthermore, the spraying method can effectively reduce the amount of cutting fluid used by the shaving machine and greatly reduce the energy consumption required for cutting fluid recycling.

[0015] like Figures 3-7 As shown, in this technical solution, the two ends of the shaving cutter disc 4 are provided with a first slot 7 located between two adjacent sets of positioning strips 6, while the middle of both sides of the bottom end of the extrusion plate 8 is provided with a second slot 10, and the inner end of the end cap assembly 12 is provided with a third slot 15. The positions of the first slot 7, the second slot 10 and the third slot 15 correspond to each other, and an elastic element 17 with a ring structure is engaged on them. Thus, when the extrusion plate 8 at the corresponding position is not under force, under the elastic force of the elastic element 17, it can be forced to move automatically inward to expand the variable chamber to facilitate the flow of cutting fluid.

[0016] like Figure 3 , Figure 4 as well as Figure 7As shown, in this technical solution, a guide hole 13 is provided on the inner end face of the end cap assembly 12, corresponding to the position of the third slot 15. The other end of the guide hole 13 extends to the outer surface of the end cap assembly 12 and communicates with the connecting slot 14 opened on the shaving cutter disc 4. A sliding sealing ring 16 communicating with the connecting slot 14 is movably sleeved on one side of the outer surface of the shaving cutter disc 4. The sliding sealing ring 16 is connected to an external oil pump through a hose. Thus, the cutting fluid can be transported to the variable chamber formed by the outer end of the extrusion plate 8 and the inner wall of the corresponding section of the shaving cutter disc 4 through the sliding sealing ring 16, the connecting slot 14 and the guide hole 13.

[0017] like Figure 5 , Figure 8 as well as Figure 9 As shown, in this technical solution, the inner and outer wide surfaces of the extrusion plate 8 are designed as arc-shaped structures, and its outer arc-shaped wide surface is the same as the arc trajectory of the inner wall of the shaving cutter disc 4. The narrow surfaces on the left and right sides of the extrusion plate 8 are designed as parallel planar structures, thereby ensuring the relative sealing of the variable chamber during the movement of the extrusion plate 8. At the same time, the cutting fluid in the variable chamber can be completely discharged when it is squeezed.

[0018] like Figure 8 , Figure 9 As shown, in this technical solution, a number of chip removal grooves are provided on the outer surface of the shaving cutter disc 4, arranged in a ring array along its central axis. The installation position of the positioning strip 6 corresponds to the opening position of the chip removal grooves, thereby ensuring that each set of connecting holes 5 can spray cutting fluid at a specific position during the rotation of the shaving cutter disc 4, and that some connecting holes 5 will not be blocked due to the installation of the positioning strip 6.

[0019] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A CNC machine tool gear shaving machine, comprising a gear shaving assembly (1), wherein the gear shaving assembly (1) has a positioning shaft (2) with both ends fixedly mounted on the gear shaving machine, the bottom of the outer surface of the gear shaving assembly (1) meshes with a gear component (3) mounted on the gear shaving machine, and a gear disk is fixedly sleeved on the left side of the outer surface of the gear shaving assembly (1) and meshes with an external drive mechanism, characterized in that: The shaving assembly (1) includes a shaving disc (4), and the interior of the shaving disc (4) is provided with a number of connecting holes (5). One end of the connecting hole (5) extends to the outer surface of the shaving disc (4) and is arranged along the spiral gear blades thereon, while the other end of the connecting hole (5) extends into the inner cavity of the shaving disc (4). The inner wall of the shaving disc (4) is provided with positioning strips (6) along its central axis, and a set of extrusion plates (8) is provided between each pair of adjacent positioning strips (6). The inner wall of the extrusion plate (8) is in sliding friction contact with the outer surface of the positioning shaft (2), and a linkage groove (9) is provided on the inner end face of the extrusion plate (8). The outer surface of the positioning shaft (2) is provided with a shaped groove (11) that cooperates with the linkage groove (9). A set of end cap assemblies (12) that are movably sleeved with the outer surface of the positioning shaft (2) are provided on both sides of the shaving disc (4).

2. The numerically controlled gear shaving machine according to claim 1, characterized in that, The shaving disc (4) has a first slot (7) at both ends and between two adjacent sets of positioning strips (6), and a second slot (10) in the middle of both sides of the bottom end of the extrusion plate (8). The end cap assembly (12) has a third slot (15) on its inner side. The positions of the first slot (7), the second slot (10) and the third slot (15) correspond to each other and are engaged with an elastic element (17) in a ring structure.

3. The numerically controlled gear shaving machine according to claim 2, characterized in that, A guide hole (13) is provided on the inner end face of the end cap assembly (12) and corresponding to the position of the third slot (15). The other end of the guide hole (13) extends to the outer surface of the end cap assembly (12) and communicates with the connecting slot (14) on the shaving disc (4). A sliding sealing ring (16) communicating with the connecting slot (14) is movably sleeved on one side of the outer surface of the shaving disc (4). The sliding sealing ring (16) is connected to the external oil pump through a hose.

4. The CNC machine tool gear shaving machine according to claim 3, characterized in that, The inner and outer wide surfaces of the extrusion plate (8) are designed as arc-shaped structures, and its outer arc-shaped wide surface is the same as the arc trajectory of the inner wall of the shaving blade disc (4), while the narrow surfaces on the left and right sides of the extrusion plate (8) are designed as parallel planar structures.

5. The CNC machine tool gear shaving machine according to claim 4, characterized in that, The outer surface of the shaving disc (4) is provided with several sets of chip removal grooves arranged in a ring array along its central axis, and the installation position of the positioning strip (6) corresponds to the opening position of the chip removal groove.