A PCD tool for trimming tooth profile

Abstract

The invention discloses a PCD tool for trimming tooth profile, and relates to the technical field of tooth profile trimming. The PCD tool for trimming tooth profile comprises a front end head hob assembly, one side of the front end head hob assembly is provided with an intermediate hob assembly, one side of the intermediate hob assembly is provided with a rear end head hob assembly, and the intermediate hob assembly is clamped by the front end head hob assembly and the rear end head hob assembly, the other side of the front end head hob assembly is provided with a front end connecting assembly, and the other side of the rear end head hob assembly is provided with a rear end connecting assembly. This solution solves the problem that most of the existing tools for trimming tooth profile are not able to adjust the cutting edge as a whole, and when it is necessary to trim the bevel tooth profile, it is necessary to replace the gear hob corresponding to the bevel, or use a single tooth structure hob, which is time-consuming and labor-intensive, and has poor flexibility, and the existing gear hobs are mostly made of carbide steel, which has low hardness and leads to a short service life.

Description

Technical Field

[0001] The invention relates to the technical field of tooth profile trimming, in particular to a PCD tool for trimming tooth profile. Background Art

[0002] ‌Tooth profile trimming tool‌ is a technical means to optimize the shape of gear tooth surface. The purpose of this trimming is to reduce the impact and vibration of the gear when it is meshing, thereby improving the performance of the gear. The method used is to grind and cut the gear tooth surface through a fast-rotating tool;

[0003] For example, the Chinese authorized patent with announcement number CN212707229U (veneer toothed cutting tool): includes the field of splicing equipment for forming a toothed structure interface on the edge of a single board, wherein at least one of the upper toothed knife and the lower toothed knife has an edge edge higher than other parts in front of the edge; when the single board toothed cutting tools cooperate with each other to cut teeth, the single board is located between the upper toothed knife and the lower toothed knife, and when the raised toothed edge cuts into the single board, the knife groove provides a space for the cut single board to accommodate, so that the toothed edge cuts out the corresponding toothed structure on the single board. The above technical solution has less extrusion on the interface cut out of the single board, and the cut interface is smooth and has fewer burrs, which improves the stress performance and appearance of the interface.

[0004] However, most of the existing tools for trimming tooth profiles cannot adjust the cutting edge as a whole. When it is necessary to trim the bevel tooth profile, the gear hob of the corresponding bevel needs to be replaced, or a single tooth structure hob needs to be used, which is time-consuming and labor-intensive, and has poor flexibility. In addition, the existing gear hobs are mostly made of carbide steel, which has low hardness and short service life. Therefore, it does not meet the existing needs. In this regard, we propose a PCD tool for trimming tooth profiles. Summary of the invention

[0005] The purpose of the present invention is to provide a PCD tool for trimming tooth profile, so as to solve the problem that most of the existing tools for trimming tooth profile mentioned in the above background technology cannot adjust the cutting edge as a whole. When the bevel tooth profile needs to be trimmed, the gear hob corresponding to the bevel needs to be replaced, or a single tooth structure hob needs to be used, which is time-consuming and labor-intensive and has poor flexibility. In addition, the existing gear hobs are mostly made of carbide steel with low hardness, resulting in a short service life.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A PCD tool for trimming tooth shape, comprising: a front end head hob assembly, a middle hob assembly is arranged on one side of the front end head hob assembly, a rear end head hob assembly is arranged on one side of the middle hob assembly, and the middle hob assembly is clamped by the front end head hob assembly and the rear end head hob assembly, a front end connecting assembly is arranged on the other side of the front end head hob assembly, a rear end connecting assembly is arranged on the other side of the rear end head hob assembly, the middle hob assembly comprises a second center seat, a second through hole is arranged on the surface of the second center seat, and a plurality of second through holes are arranged.

[0007] Preferably, the front end head hob assembly and the rear end head hob assembly both include a first center seat, a first blade sleeve is disposed on the outside of the first center seat, a first blade is disposed on the outer surface of the first blade sleeve, and a plurality of first blades are disposed, and first blade openings are formed at the connections between the plurality of first blades.

[0008] Preferably, a first through hole is provided on the surface of the first center seat, and the number of the first through holes is the same as that of the second through holes, a stabilizing component is inserted into the inside of the first through hole, a first mounting groove is provided at the center of the first center seat, and a second mounting groove is provided at the center of the second center seat.

[0009] Preferably, a second blade sleeve is disposed outside the second center seat, a second blade is disposed on an outer wall of the second blade sleeve, and a plurality of second blades are disposed, and the plurality of second blades are connected to each other to form a second blade opening.

[0010] Preferably, the stabilizing assembly includes a stabilizing column and a first column seat, and the first column seat is located at one end of the stabilizing column, and a second column seat is provided at the other end of the stabilizing column, and one side surface of the first column seat and the second column seat are both provided with threaded connecting grooves, and the two ends of the stabilizing column are respectively threadedly fixed to the threaded connecting grooves of the first column seat and the second column seat through connecting threads.

[0011] Preferably, a connecting outer ring is welded on one side surface of the first center seat of the front end head hob assembly and the rear end head hob assembly.

[0012] Preferably, the front-end connecting component and the rear-end connecting component both include a connecting cover plate, an outer ring connecting groove is provided inside the connecting cover plate, and the connecting outer ring is inserted into the outer ring connecting groove, a rotating shaft groove is provided on the inner top surface of the outer ring connecting groove, and the rotating shaft groove passes through the connecting cover plate, a rotating shaft connecting notch is provided on the inner wall of one side of the rotating shaft groove, and a column hole is provided on the surface of the connecting cover plate, and a reinforcing component is inserted into the column hole.

[0013] Preferably, the reinforcement component includes a reinforcement column and a limiting cover, an outer surface of one end of the reinforcement column is provided with an external thread, and the reinforcement column is rotatably connected to the limiting cover via the external thread.

[0014] Preferably, the first blade and the second blade are both made of PCD material.

[0015] Preferably, one end of the stabilizing pin is inserted along the first through hole of the front end hob assembly, passes through the second through hole of the middle hob assembly, and comes out from the first through hole of the rear end hob assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention divides the existing integral gear hob into a front end hob assembly, an intermediate hob assembly and a rear end hob assembly to form a new tool, wherein one end of a stabilizing plug is inserted along the first through hole of the front end hob assembly, and then the intermediate hob assembly is put on along the stabilizing plug, and then a plurality of intermediate hob assemblies are put on, and finally the rear end hob assembly is installed, and one end of the stabilizing plug is inserted along the first through hole of the front end hob assembly, passes through the second through hole of the intermediate hob assembly, and passes out from the first through hole of the rear end hob assembly, and is limited and fixed by the first column seat and the second column seat. At this time, the first blade and the second blade are neatly and non-aligned. When the bevel tooth profile needs to be trimmed, the front end hob assembly, the intermediate hob assembly and the rear end hob assembly are installed in a staggered manner, and the first blade and the second blade are tilted and staggered. The tool is fixed in position and does not need to be replaced, which improves the overall flexibility and applicability. The tool composed of the front end hob assembly, the middle hob assembly and the rear end hob assembly can independently replace the damaged part without replacing the whole, which reduces the replacement cost. The first blade and the second blade are both made of PCD material. PCD material is polycrystalline diamond, which has higher hardness and wear resistance than existing cemented carbide steel, thereby increasing the service life. There is no need for PCD particle size testing, which solves the problem that most of the existing tools for trimming tooth profiles cannot adjust the cutting edge as a whole. When bevel tooth profile trimming is required, the gear hob of the corresponding bevel needs to be replaced, or a single tooth structure hob needs to be used, which is time-consuming and labor-intensive, and has poor flexibility. In addition, existing gear hobs are mostly made of cemented carbide steel with low hardness, resulting in a short service life. By respectively arranging a front end connection component and a rear end connection component on both sides of the front end head hob assembly and the rear end head hob assembly, the front end connection component and the rear end connection component rely on the outer ring connection groove of the connecting cover plate to be respectively sleeved on the outside of the connecting outer ring of the front end head hob assembly and the rear end head hob assembly, thereby protecting the first column seat and the second column seat to improve safety, and the front end connection component and the rear end connection component are respectively fixed to the front end head hob assembly and the rear end head hob assembly through the reinforcing component, and the whole is inserted into the rotating shaft (not shown in the figure) for tool installation, and the rotating shaft is inserted along the rotating shaft groove, passes through the first installation groove and the second installation groove, and is conveniently connected to the outer protrusion on the surface of the rotating shaft through the rotating shaft connection notch on the inner wall of the rotating shaft groove, thereby driving the entire tool to rotate through the rotation of the rotating shaft. This is the prior art, thereby performing tooth profile trimming on the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention after removing the front-end connection components;

[0020] Figure 3It is a left side structural schematic diagram of the front end hob assembly and the stabilizing assembly connected to each other according to the present invention;

[0021] Figure 4 It is a schematic structural diagram of the intermediate hob assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the reinforcement assembly of the present invention;

[0023] Figure 6 It is a schematic diagram of the staggered connection structure of the front end hob assembly and the middle hob assembly of the present invention;

[0024] Figure 7 It is a schematic diagram of the rear view structure of the front-end connection assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection structure between the stabilizing plug post and the first column base and the second column base of the present invention;

[0026] In the figure: 1. front end hob assembly; 2. middle hob assembly; 3. rear end hob assembly; 4. front end connection assembly; 5. reinforcement assembly; 6. connecting outer ring; 7. first through hole; 8. stabilization assembly; 9. stabilization column; 10. first column seat; 11. first center seat; 12. first blade sleeve; 13. first blade; 14. first mounting groove; 15. second center seat; 16. second blade sleeve; 17. second blade; 18. second mounting groove; 19. reinforcement column; 20. limit cover; 21. column hole; 22. shaft groove; 23. shaft connection notch; 24. outer ring connection groove; 25. rear end connection assembly; 26. second column seat; 27. connecting thread; 28. threaded connection groove; 29. ​​second through hole; 30. first blade opening; 31. second blade opening; 32. connecting cover plate; 33. external thread. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-8, an embodiment of the present invention: a PCD tool for trimming tooth shape, comprising: a front end head hob assembly 1, a middle hob assembly 2 is arranged on one side of the front end head hob assembly 1, a rear end head hob assembly 3 is arranged on one side of the middle hob assembly 2, and the middle hob assembly 2 is clamped by the front end head hob assembly 1 and the rear end head hob assembly 3, a front end connecting assembly 4 is arranged on the other side of the front end head hob assembly 1, and a rear end connecting assembly 25 is arranged on the other side of the rear end head hob assembly 3, the middle hob assembly 2 comprises a second center seat 15, a second through hole 29 is arranged on the surface of the second center seat 15, and a plurality of second through holes 29 are arranged, the tool composed of the front end head hob assembly 1, the middle hob assembly 2 and the rear end head hob assembly 3 can replace the damaged part independently without replacing the whole, thereby reducing the replacement cost, the front end head hob assembly 1 and the rear end head hob assembly 3 both comprise a first center seat 11, a first blade sleeve 12 is arranged on the outside of the first center seat 11, a first blade 13 is arranged on the outer surface of the first blade sleeve 12, and the first blade 13 There are several first blades 13, and the connections between the several first blades 13 form a first blade opening 30. The surface of the first center seat 11 is provided with a first through hole 7, and the number of the first through hole 7 is the same as that of the second through hole 29. The stabilizing component 8 is inserted into the inside of the first through hole 7. The center of the first center seat 11 is provided with a first mounting groove 14, and the center of the second center seat 15 is provided with a second mounting groove 18. The outside of the second center seat 15 is provided with a second blade sleeve 16, and the outer wall of the second blade sleeve 16 is provided with a second blade 17, and the second blade 17 is provided with several, and the connections between the several second blades 17 form a second blade opening 31. The stabilizing component 8 includes a stabilizing column 9 and a first column seat 10, and the first column seat 10 is located at one end of the stabilizing column 9, and the other end of the stabilizing column 9 is provided with a second column seat 26. The first column seat 10 and the second column seat 26 are provided with a threaded connection groove 28 on one side surface, and the two ends of the stabilizing column 9 are respectively threadedly fixed with the threaded connection grooves 28 of the first column seat 10 and the second column seat 26 through connecting threads 27.

[0029] Pass one end of the stabilizing column 9 through the first through hole 7 of the front end head cutter assembly 1, then put the intermediate cutter assembly 2 along the stabilizing column 9, put on multiple intermediate cutter assemblies 2, and finally install the rear end head cutter assembly 3. Insert one end of the stabilizing column 9 along the first through hole 7 of the front end head cutter assembly 1, pass through the second through hole 29 of the intermediate cutter assembly 2, and pass out from the first through hole 7 of the rear end head cutter assembly 3. At this time, the first blade 13 and the second blade 17 are neatly positioned. When the bevel tooth profile needs to be trimmed, the front end head cutter assembly 1, the intermediate cutter assembly 2 and the rear end head cutter assembly 3 are installed in an offset manner, and the first blade 13 and the second blade 17 are tilted and offset and fixed, and there is no need to replace the tool, thereby improving the overall flexibility and applicability.

[0030] See also Figure 1 , 2 , 7. The first center seat 11 of the front end head hob assembly 1 and the rear end head hob assembly 3 are both welded with a connecting outer ring 6 on one side surface. The front end connecting assembly 4 and the rear end connecting assembly 25 both include a connecting cover plate 32. The connecting cover plate 32 is provided with an outer ring connecting groove 24 inside, and the connecting outer ring 6 is inserted into the outer ring connecting groove 24. The inner top surface of the outer ring connecting groove 24 is provided with a rotating shaft groove 22, and the rotating shaft groove 22 passes through the connecting cover plate 32. A rotating shaft connecting notch 23 is provided on one side inner wall of the rotating shaft groove 22. A column hole 21 is provided on the surface of the connecting cover plate 32, and a reinforcing assembly 5 is inserted into the column hole 21. The front end connecting assembly 4 and the rear end connecting assembly 25 are respectively covered on the outside of the connecting outer ring 6 of the front end head hob assembly 1 and the rear end head hob assembly 3 by relying on the outer ring connecting groove 24 of the connecting cover plate 32, and are limitedly connected by the reinforcing assembly 5 to facilitate the overall rotation.

[0031] See also Figure 1 , 2 7. The reinforcing component 5 includes a reinforcing column 19 and a limiting cover 20. An external thread 33 is provided on the outer surface of one end of the reinforcing column 19. The reinforcing column 19 is rotatably connected to the limiting cover 20 through the external thread 33. The reinforcing column 19 is inserted along the column hole 21. One end of the reinforcing column 19 passes through the column hole 21 and is inserted into the first through hole 7. The front end connecting component 4 and the rear end connecting component 25 are respectively limited to the front end head hob component 1 and the rear end head hob component 3 to prevent rotation.

[0032] See also Figure 1 , 2 , 3, 4, the first blade 13 and the second blade 17 are both made of PCD material. PCD material is polycrystalline diamond, which has higher hardness and wear resistance than existing cemented carbide steel, thereby increasing service life and eliminating the need for PCD particle size testing.

[0033] Working principle: When in use, one end of the stabilizing plug 9 is inserted along the first through hole 7 of the front end head cutter assembly 1, and then the intermediate cutter assembly 2 is put on along the stabilizing plug 9, and then multiple intermediate cutter assemblies 2 are put on, and finally the rear end head cutter assembly 3 is installed. One end of the stabilizing plug 9 is inserted along the first through hole 7 of the front end head cutter assembly 1, passes through the second through hole 29 of the intermediate cutter assembly 2, and passes out from the first through hole 7 of the rear end head cutter assembly 3;

[0034] The two ends of the stabilizing plug 9 are respectively threadedly fixed to the threaded connection grooves 28 of the first column seat 10 and the second column seat 26 through the connecting threads 27, so that the front end hob assembly 1, the middle hob assembly 2 and the rear end hob assembly 3 are squeezed and fixed, and the first blade 13 and the second blade 17 are neatly positioned;

[0035] The front end connection component 4 and the rear end connection component 25 are respectively sleeved on the outside of the connection outer ring 6 of the front end head hob component 1 and the rear end head hob component 3 by relying on the outer ring connection groove 24 of the connection cover plate 32, and then the reinforcing column 19 is inserted along the column hole 21, and one end of the reinforcing column 19 is inserted into the first through hole 7 after passing through the column hole 21, and the front end connection component 4 and the rear end connection component 25 are respectively limited with the front end head hob component 1 and the rear end head hob component 3 to prevent rotation, and the other end of the reinforcing column 19 is limited by the limiting cover 20. After being fixed, the whole is inserted into the rotating shaft (not shown in the figure) for tool installation, and the rotating shaft is inserted along the rotating shaft groove 22, passes through the first installation groove 14 and the second installation groove 18, and the entire tool is driven to rotate by the rotation of the rotating shaft, so as to perform tooth shape trimming on the gear. The first blade 13 and the second blade 17 are both made of PCD material, which is polycrystalline diamond. Compared with the existing cemented carbide steel, the PCD material has higher hardness and wear resistance, thereby improving the service life, and no PCD particle size test is required;

[0036] When bevel tooth profile trimming is required, the front end head hob assembly 1, the middle hob assembly 2 and the rear end head hob assembly 3 are installed in an offset manner, and the first blade 13 and the second blade 17 are fixed in an inclined offset manner. There is no need to replace the tools, which improves the overall flexibility and applicability. In addition, the tools composed of the front end head hob assembly 1, the middle hob assembly 2 and the rear end head hob assembly 3 can independently replace the damaged parts without replacing the entirety, thereby reducing the replacement cost.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A PCD tool for trimming tooth profile, comprising a front end hob assembly (1), characterized in that: The front end head hob assembly (1) is provided with an intermediate hob assembly (2) on one side, the intermediate hob assembly (2) is provided with a rear end head hob assembly (3) on one side, and the intermediate hob assembly (2) is clamped by the front end head hob assembly (1) and the rear end head hob assembly (3), the front end head hob assembly (1) is provided with a front end connecting assembly (4) on the other side, and the rear end head hob assembly (3) is provided with a rear end connecting assembly (25) on the other side, the intermediate hob assembly (2) comprises a second center seat (15), the surface of the second center seat (15) is provided with a second through hole (29), and the second through hole (29) is provided with a plurality of holes, the front end head hob assembly (1) and the rear end head hob assembly (3) are connected to each other by a plurality of holes. The knife assembly (3) comprises a first center seat (11), a first blade sleeve (12) is arranged outside the first center seat (11), a first blade (13) is arranged on the outer surface of the first blade sleeve (12), and a plurality of first blades (13) are arranged, and a first blade opening (30) is formed at the connection between the plurality of first blades (13), a first through hole (7) is arranged on the surface of the first center seat (11), and the number of the first through holes (7) and the number of the second through holes (29) are the same, a stabilizing assembly (8) is inserted into the inside of the first through hole (7), a first mounting groove (14) is arranged at the center of the first center seat (11), and the second center seat (15) A second installation groove (18) is provided at the center of the second center seat (15), a second blade sleeve (16) is provided outside the second center seat (15), a second blade (17) is provided on the outer wall of the second blade sleeve (16), and a plurality of second blades (17) are provided, and the plurality of second blades (17) are connected to each other to form a second blade opening (31), the stabilizing component (8) comprises a stabilizing column (9) and a first column seat (10), and the first column seat (10) is located at one end of the stabilizing column (9), and a second column seat (26) is provided at the other end of the stabilizing column (9), and a threaded connection groove (28) is provided on one side surface of the first column seat (10) and the second column seat (26), and the stabilizing component (8) comprises a stabilizing column (9) and a first column seat (10), and the first column seat (10) and the second column seat (26) are provided with a threaded connection groove (28) on one side surface of the stabilizing column (9). The two ends of the fixed plug column (9) are respectively threadedly fixed to the threaded connection grooves (28) of the first column seat (10) and the second column seat (26) through connecting threads (27); one end of the stabilizing plug column (9) is inserted along the first through hole (7) of the front end head hob assembly (1), passes through the second through hole (29) of the middle hob assembly (2), and comes out from the first through hole (7) of the rear end head hob assembly (3); the first blade (13) and the second blade (17) are neatly positioned; when the bevel tooth shape needs to be trimmed, the front end head hob assembly (1), the middle hob assembly (2) and the rear end head hob assembly (3) are staggered and installed, and the first blade (13) and the second blade (17) are tilted and staggered and fixed.

2. A PCD tool for trimming tooth profile according to claim 1, characterized in that: A connecting outer ring (6) is welded to one side surface of the first center seat (11) of the front end head hob assembly (1) and the rear end head hob assembly (3).

3. A PCD tool for trimming tooth profile according to claim 2, characterized in that: The front connection component (4) and the rear connection component (25) both comprise a connection cover plate (32), an outer ring connection groove (24) is provided inside the connection cover plate (32), and the connection outer ring (6) is inserted into the outer ring connection groove (24), a rotating shaft groove (22) is provided on the inner top surface of the outer ring connection groove (24), and the rotating shaft groove (22) passes through the connection cover plate (32), a rotating shaft connection notch (23) is provided on one inner wall of the rotating shaft groove (22), and a column hole (21) is provided on the surface of the connection cover plate (32), and the reinforcing component (5) is inserted into the column hole (21).

4. A PCD tool for trimming tooth profile according to claim 3, characterized in that: The reinforcement assembly (5) comprises a reinforcement column (19) and a limiting cover (20); an outer surface of one end of the reinforcement column (19) is provided with an external thread (33); and the reinforcement column (19) is rotatably connected to the limiting cover (20) via the external thread (33).

5. A PCD tool for trimming tooth profile according to claim 4, characterized in that: The first blade (13) and the second blade (17) are both made of PCD material.

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