Ultrasonic longitudinal torsion type machining device for gear

Abstract

The utility model relates to the technical field of gear machining, and discloses a gear ultrasonic longitudinal torsion type machining device which comprises a cutter handle body, an energy transmission assembly, an amplitude-change pole, a transducer assembly and a gear cutter, and a groove is formed in the periphery of the amplitude-change pole; one end of the knife handle body is a mounting part, the other end is provided with a containing cavity, and an energy transmission assembly is arranged on the periphery of the knife handle body; the amplitude-change pole is partially arranged in the accommodating cavity and is connected with the end part of the knife handle body; the transducer assembly is arranged on the amplitude-change pole and is connected with the energy transmission assembly; and the gear cutter is arranged at the end part of the amplitude-change pole and can perform longitudinal-torsional compound vibration. The gear machining precision can be improved, abrasion of a gear cutter is reduced, the service life of the gear cutter is prolonged, the overall structure is simple, and working performance is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, and more specifically, particularly relates to an ultrasonic longitudinal torsion processing device for gears. Background Art

[0002] With the continuous development of automobiles, ships, aerospace and other fields, the performance and processing quality requirements of mechanical parts are getting higher and higher. Mechanical parts are developing towards high precision, high strength and low density, which puts more stringent requirements on processing equipment. Take gears as an example. Gears refer to mechanical parts that can mesh with each other and have teeth. They are widely used in mechanical transmission and the entire mechanical field. Gear transmission has the advantages of high precision, wide application range and high transmission efficiency.

[0003] Common gear processing methods include gear hobbing with a gear hobbing machine, gear milling with a milling machine, and gear slotting with a slotting machine. That is, the gear teeth are cut out by reciprocating the tool gear up and down on the gear to be processed. The processed gear usually needs to be polished, honed, or honed to improve the surface quality of the gear and meet the use requirements under complex working conditions. When the tool gear is processing the gear to be processed, the large cutting force will accelerate the wear of the tool gear, resulting in a decrease in processing accuracy. At present, ultrasonic processing technology is also applied in gear processing, which can reduce the wear of the tool gear, but there are still problems with low processing efficiency and processing accuracy. Summary of the invention

[0004] The utility model aims to provide a gear ultrasonic longitudinal torsion processing device to solve the technical problems existing in the prior art, which can improve the processing accuracy of the gear, reduce the wear of the gear tool and extend its service life.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A gear ultrasonic longitudinal torsion processing device comprises a tool handle body, an energy transmission component, a horn, a transducer component and a gear cutter, wherein the outer periphery of the horn is provided with a groove;

[0007] One end of the handle body is a mounting portion, and the other end has a receiving cavity, and an energy transmission component is arranged on the periphery of the handle body; the amplitude change rod part is arranged in the receiving cavity and connected to the end of the handle body; the transducer component is arranged on the amplitude change rod and connected to the energy transmission component;

[0008] The gear cutter is arranged at the end of the amplitude transformer and can perform longitudinal and torsional composite vibration.

[0009] Furthermore, the amplitude changing rod has a main body, and the gear cutter is located at the end of the main body; the outer periphery of the main body is provided with a plurality of spiral grooves along the circumferential direction.

[0010] Furthermore, the radial dimension of the main body is D2;

[0011] The depth H1 of the spiral groove satisfies: H1=n1×D2, 0<n1<1; the width W1 of the spiral groove satisfies: W1=n2×D2, 0<n2<1.

[0012] Furthermore, the radial dimension of the main body is D2, and the axial distance L4 between the end of the spiral groove close to the gear tool and the gear tool satisfies: L4=n3×D2, 0<n3<5.

[0013] Furthermore, the axial dimension of the main body is L3, and the pitch P of the spiral groove satisfies: P=n4×L3, 0<n4<3.

[0014] Furthermore, the gear tool includes a connecting portion and a processing tooth portion, the connecting portion is connected to the amplitude changing rod, and the processing tooth portion is arranged on the outer periphery of the end of the connecting portion; the rotation direction of the helix angle on the processing tooth portion is the same as or opposite to the rotation direction of the groove on the amplitude changing rod.

[0015] Furthermore, the relationship between the number of teeth N2 of the processed tooth portion and the number of grooves N1 of the spiral groove satisfies: N2 = 2π·m·H1·D3+N1·π·H1·cosα, and the normal modulus m is

[0016] 0.2≤m≤3.2, α is the helix angle.

[0017] Furthermore, the helix angle α of the machined tooth portion satisfies: 1°≤α≤15°, and the number of grooves N1 is 2≤N1<8.

[0018] Furthermore, a mounting protrusion is provided on the outer periphery of the tool handle body, a mounting groove is provided on the mounting protrusion along the axial direction, the opening of the mounting groove faces the gear tool, and the energy transmission component is arranged in the mounting groove.

[0019] Furthermore, a multi-stage connection protrusion is provided on the outer periphery of the amplitude changing rod, and the connection protrusion is installed and matched with the end of the handle body and is set as the vibration zero point.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] In the utility model, the gear cutter is arranged at the end of the amplitude change rod, and the amplitude change rod is provided with a groove. The longitudinal vibration generated by the transducer assembly is amplitude-changed by the amplitude change rod with the groove and then transmitted to the gear cutter, so that the gear cutter performs stable longitudinal-torsional composite vibration, which can improve the processing accuracy of the gear, reduce the wear of the gear cutter, and extend the service life of the gear cutter. The overall structure is simple, and the working performance is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the scheme of the utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 This is a structural diagram of the gear ultrasonic longitudinal torsion processing device of the utility model.

[0024] Figure 2 It is a cross-sectional view of the gear ultrasonic longitudinal torsion processing device of the utility model.

[0025] Figure 3 It is a right view of the gear ultrasonic longitudinal torsion processing device of the utility model.

[0026] Figure 4 It is a parameter schematic diagram of the gear ultrasonic longitudinal torsion processing device of the utility model.

[0027] Among them, 10-handle body, 11-installation part, 101-accommodation cavity, 102-installation protrusion, 12-energy transmission component, 20-amplitude transformer, 21-transducer component, 22-connection protrusion, 201-main body, 202-spiral groove, 30-gear tool, 31-connection part, 32-processing tooth part. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0029] The terms "including" and "having" and any variations thereof in the specification and claims of the utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to the other element.

[0030] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] See also Figures 1 to 4 As shown, the utility model provides a gear ultrasonic longitudinal torsion processing device, comprising a tool handle body 10, an energy transmission assembly 12, a horn 20, a transducer assembly 21 and a gear cutter 30, wherein the outer periphery of the horn 20 is provided with a groove;

[0032] One end of the tool handle body 10 is a mounting portion 11 , and the mounting portion 11 is mounted in cooperation with an external machine tool or a spindle; the other end of the tool handle body 10 has a receiving cavity 101 , and an energy transmission component 12 is disposed on the periphery of the tool handle body 10 .

[0033] The amplitude converter 20 is partially disposed in the accommodating cavity 101 of the shank body 10 and connected to the end of the shank body 10 ; the transducer assembly 21 is disposed on the amplitude converter 20 , the transducer assembly 21 is placed in the accommodating cavity 101 and connected to the energy transmission assembly 12 .

[0034] The gear cutter 30 is arranged at the end of the amplitude change rod 20. The longitudinal vibration generated by the transducer assembly 21 is changed in amplitude by the amplitude change rod 20 with grooves, so that the gear cutter 30 can perform longitudinal and torsional composite vibration and act on the gear to be processed.

[0035] In this embodiment, the gear cutter 30 is arranged at the end of the horn 20, and the energy transmission assembly 12 is connected to an external ultrasonic power supply. Since the horn 20 is provided with a groove, the longitudinal vibration generated by the transducer assembly 21 is transmitted to the gear cutter 30 after the amplitude change of the horn 20, driving the gear cutter 30 to perform longitudinal-torsional composite vibration. The gear cutter 30 acts on the gear to be processed to complete the gear processing. Compared with the longitudinal vibration, the gear cutter 30 performs longitudinal-torsional composite vibration, which can greatly improve the gear processing accuracy and further extend the service life of the gear cutter.

[0036] Furthermore, a mounting protrusion 102 is provided on the outer periphery of the shank body 10, and a mounting groove is provided on the mounting protrusion 102 along the axial direction, and the opening of the mounting groove faces the gear tool 30, and the energy transmission component 12 is arranged in the mounting groove, that is, the energy transmission component 12 is located on the side of the mounting protrusion 102 close to the gear tool 30.

[0037] It is understandable that the opening of the mounting groove can also be set toward the mounting portion 11. In the present embodiment, the energy transmission component 12 is located on the side of the mounting protrusion 102 close to the gear tool 30. In this way, when the energy transmission component 12 transmits energy with the external transmitting component, it can avoid interference with the external machine tool, thereby ensuring the reliability of energy transmission.

[0038] Furthermore, a multi-stage connecting protrusion 22 is provided on the periphery of the amplitude transformer 20, and the connecting protrusion 22 is installed and matched with the end of the handle body 10 and is set as a vibration zero point, thereby ensuring reliable installation between the amplitude transformer 20 and the handle body 10, and avoiding leakage of ultrasonic amplitude, thereby further ensuring the reliability of ultrasonic vibration processing.

[0039] Furthermore, the amplitude transformer 20 has a main body 201, and the gear cutter 30 is located at the end of the main body 201. The outer periphery of the main body 201 is provided with a plurality of spiral grooves 202 along the circumferential direction. The spiral grooves 202 have a simple structure and can reliably transform the longitudinal vibration generated by the transducer assembly 21 to generate a longitudinal-torsional composite vibration on the gear cutter 30.

[0040] It is understandable that the groove on the amplitude change rod 20 can be a spiral groove 203, or a bevel groove or a groove structure of other shapes, both of which can generate longitudinal and torsional composite vibrations on the gear cutter 30 after the amplitude change action of the amplitude change rod 20 to improve the gear processing accuracy.

[0041] Furthermore, the radial dimension of the main body 201 is D2, the depth H1 of the spiral groove 202 satisfies: H1 = n1 × D2, 0 < n1 < 1; the width W1 of the spiral groove 202 satisfies:

[0042] W1=n2×D2, 0<n2<1. Among them, n1 and n2 can be specifically 0.2, 0.5, 0.7, 0.9 or any value within the range, respectively, so that the gear cutter 30 can reliably realize longitudinal-torsional composite vibration while ensuring the structural strength of the amplitude transformer 20, and can also meet different processing requirements.

[0043] Furthermore, an axial distance L4 between the end of the spiral groove 202 close to the gear tool 30 and the gear tool 30 satisfies: L4=n3×D2, 0<n3<5, and n3 can specifically be 0.5, 1, 2, 2.5, 3, 3.5, 4, 4.5 or any value within the range to meet different processing requirements.

[0044] Furthermore, the axial dimension of the main body 201 is L3, and the pitch P of the spiral groove 202 satisfies: P=n4×L3, 0<n4<3, and n4 can specifically be 0.5, 1, 1.5, 2, 2.5 or any value within the range to meet different processing requirements.

[0045] Furthermore, the number N1 of the spiral grooves 202 satisfies: 2≤N1<8, and N1 can be specifically 2, 3, 4, 5, 6 or 7, which can ensure the structural strength of the amplitude transformer 20 and enable the gear tool 30 to achieve ultrasonic longitudinal-torsional composite vibration.

[0046] Furthermore, the gear cutter 30 includes a connecting portion 31 and a processing tooth portion 32 . The connecting portion 31 is connected to the amplitude transformer 20 . The processing tooth portion 32 is arranged on the outer periphery of the end of the connecting portion 31 , which is convenient for installation and connection and also convenient for gear processing.

[0047] Further, the helix angle α of the processing tooth portion 32 satisfies: 1°≤α≤15°, and the direction of the helix angle is the same as or opposite to the direction of the groove on the horn 20, which can ensure the processing accuracy and meet the processing requirements of different gear structures. Specifically, the helix angle α can be 1°, 5°, 8°, 10°, 12°, 15° or any value within the range, which can meet the processing requirements.

[0048] Furthermore, the relationship between the number of teeth N2 of the processing tooth portion 32 and the number of grooves N1 of the spiral groove 202 satisfies: N2=2π·m·H1·D3+N1·π·H1·cosα, wherein the normal modulus m is in the range of 0.2≤m≤3.2, and the specific value of m is 0.2, 0.5, 1, 1.5, 2, 2.5, 3, 3.2 or any value within the range, which can meet the processing requirements and ensure the processing accuracy.

[0049] Furthermore, the axial length of the mounting portion 11 is L1, the overall axial length of the shank body 10 is L2, and the maximum radial dimension of the shank body 10 is D1, satisfying: L2=n×L1, 0<n≤5, n can be 0.1, 1, 2, 3, 4, 5 or any value within the range, which can ensure that the mounting portion and the external machine tool can be reliably installed without affecting the processing efficiency of the processing device.

[0050] Furthermore, the axial length of the main body 201 is L3, satisfying: L3=n5×L2, 0<n5<1, n5 can be 0.2, 0.4, 0.5, 0.7, 0.9 or any value within the range, so that the longitudinal and torsional vibration generated by the amplitude change rod 20 driven by the transducer assembly 21 can be stably transmitted to the gear tool 30 after amplitude change.

[0051] Furthermore, the radial dimension of the main body 201 is D2, which satisfies: D2=n6×D1, 0<n6<4, and n6 can be 0.5, 1, 2, 2.5, 3.5 or any value within the range, so that the longitudinal and torsional vibration generated by the amplitude variation rod 20 driven by the transducer assembly 21 can be stably transmitted after amplitude variation.

[0052] Furthermore, the radial dimension of the connecting portion 31 is D3, satisfying: D2=n7×D3, 0.5<n7<4, n7 can be 1, 1.5, 2, 2.5, 3.5 or any value within the range, so that the longitudinal and torsional vibration generated by the amplitude transformer 20 driven by the transducer assembly 21 can be stably transmitted after amplitude transformation.

[0053] In the utility model, a groove is provided on the main body 201 of the amplitude converter 20. The groove may be a spiral groove or an inclined groove. When the structure of the spiral groove 202 and the tool handle body 10 meets the functional relationship and size range recorded above, the longitudinal vibration generated by the transducer assembly 21 can stably generate a longitudinal-torsional composite vibration on the gear cutter 30 after the amplitude is changed by the amplitude converter 20 with the groove, thereby improving the gear machining accuracy. When the structure of the gear cutter 30 meets the functional relationship and size range recorded above, it can be combined with the ultrasonic longitudinal-torsional composite vibration to produce a gain effect, further improving the machining efficiency and ensuring the machining accuracy.

[0054] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A gear ultrasonic longitudinal torsion processing device, characterized in that: It comprises a tool handle body, an energy transmission component, a horn, a transducer component and a gear cutter, wherein the outer periphery of the horn is provided with a groove; One end of the handle body is a mounting portion, and the other end has a receiving cavity, and an energy transmission component is arranged on the periphery of the handle body; the amplitude change rod part is arranged in the receiving cavity and connected to the end of the handle body; the transducer component is arranged on the amplitude change rod and connected to the energy transmission component; The gear cutter is arranged at the end of the amplitude transformer and can perform longitudinal and torsional composite vibration.

2. The gear ultrasonic longitudinal torsion processing device according to claim 1, characterized in that: The amplitude change rod has a main body, and the gear cutter is located at the end of the main body; the outer periphery of the main body is provided with a plurality of spiral grooves along the circumferential direction.

3. The gear ultrasonic longitudinal torsion processing device according to claim 2, characterized in that: The radial dimension of the main body is D2; The depth H1 of the spiral groove satisfies: H1=n1×D2, 0<n1<1; the width W1 of the spiral groove satisfies: W1=n2×D2, 0<n2<1.

4. The gear ultrasonic longitudinal torsion processing device according to claim 2, characterized in that: The radial dimension of the main body is D2, and the axial distance L4 between the end of the spiral groove close to the gear cutter and the gear cutter satisfies: L4=n3×D2, 0<n3<5.

5. The gear ultrasonic longitudinal torsion processing device according to claim 2, characterized in that: The axial dimension of the main body is L3, and the pitch P of the spiral groove satisfies: P=n4×L3, 0<n4<3.

6. The gear ultrasonic longitudinal torsion processing device according to claim 3, characterized in that: The gear cutter comprises a connecting portion and a processing tooth portion, wherein the connecting portion is connected to the amplitude changing rod, and the processing tooth portion is arranged on the outer periphery of the end of the connecting portion; the rotation direction of the helix angle on the processing tooth portion is the same as or opposite to the rotation direction of the groove on the amplitude changing rod.

7. The gear ultrasonic longitudinal torsion processing device according to claim 6, characterized in that: The relationship between the number of teeth N2 of the processed tooth portion and the number of grooves N1 of the spiral groove satisfies: N2=2π·m·H1·D3+N1·π·H1·cosα, the normal modulus m is 0.2≤m≤3.2, and α is the helix angle.

8. The gear ultrasonic longitudinal torsion processing device according to claim 7, characterized in that: The helix angle α of the machined tooth portion satisfies: 1°≤α≤15°, and the number of grooves N1 is 2≤N1<8.

9. The gear ultrasonic longitudinal torsion machining device according to any one of claims 1 to 8, characterized in that: A mounting protrusion is provided on the outer periphery of the tool handle body, a mounting groove is provided on the mounting protrusion along the axial direction, the opening of the mounting groove faces the gear tool, and the energy transmission component is arranged in the mounting groove.

10. The gear ultrasonic longitudinal torsion processing device according to claim 9, characterized in that: The outer periphery of the amplitude changing rod is provided with a multi-stage connection protrusion, and the connection protrusion is installed and matched with the end of the handle body and is set as a vibration zero point.

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