Elliptical ultrasonic turning mechanism

Abstract

The utility model relates to the technical field of machining, and discloses an elliptical ultrasonic turning mechanism which comprises a supporting shell. The cutter bar is partially arranged in the inner cavity of the supporting shell, and a cutter is arranged at the end of the cutter bar; a composite driving assembly is arranged on the cutter bar and is used for driving the cutter bar and driving the cutter to perform elliptical vibration; a first included angle alpha formed by the plane where the motion trail of the cutter is located and the front cutter face of the cutter is larger than 0 degree and smaller than or equal to 180 degrees; the turning device is simple in structure, reliable in function and capable of meeting different machining requirements and improving the working efficiency and the machining precision of turning machining.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field more specifically, and particularly relates to an oval ultrasonic turning mechanism. BACKGROUND

[0002] With the continuous development of the fields of automobile, new energy and consumer electronics, higher requirements are put forward for material performance and processing quality, such as high strength, high hardness, low density materials are widely used, and the precision and surface quality are also improved, which puts forward more stringent requirements for processing equipment. Taking turning as an example, the traditional turning cannot meet the requirements of high efficiency and high quality processing when aiming at the above new materials and new processes. The tool wears out quickly, the machining surface quality is poor, and the size precision cannot meet the requirements. Ultrasonic machining has its unique processing advantage for hard and brittle materials and composite materials, which can solve the problems that cannot be overcome by traditional turning.

[0003] Oval vibration machining can effectively reduce cutting force, improve surface machining precision and prolong tool life because of the elliptical motion trajectory of the tool, and is also widely used in ultrasonic turning mechanism. However, the direction of the tool motion trajectory in the current ultrasonic turning mechanism is relatively single, which cannot meet the processing requirements of the specific surface of the workpiece. SUMMARY

[0004] The utility model discloses a kind of oval ultrasonic turning mechanisms, which can improve the working efficiency and machining precision of turning processing, and can meet different processing requirements.

[0005] To solve the above problems, the utility model adopts the technical scheme that:

[0006] The utility model provides a kind of oval ultrasonic turning mechanisms, comprising:

[0007] Supporting shell;

[0008] Tool bar, part is set in the inner cavity of the supporting shell, the end of the tool bar is equipped with tool;Composite driving assembly is equipped on the tool bar, for driving tool bar and driving tool oval vibration;

[0009] The first included angle α formed by the plane where the motion trajectory of the tool is located and the rake face of the tool is 0 ° < α ≤ 180 °.

[0010] Further, the composite driving assembly includes a longitudinal vibration driving module and a bending vibration driving module arranged coaxially, the longitudinal vibration driving module includes a plurality of longitudinal vibration ceramic sheets, and the bending vibration driving module includes a plurality of composite bending vibration units.

[0011] Further, the composite bending vibration unit comprises at least two oppositely arranged bending vibration ceramic sheets, and an adjusting surface is formed between adjacent bending vibration ceramic sheets, and the adjusting surface and the rake face form a set included angle.

[0012] Further, a second included angle β between the adjusting surface and the rake face of the tool is 0°≤β≤90°.

[0013] Further, at least one connecting flange is arranged between the tool bar and the supporting shell, the connecting flange is provided with a damping groove, and the connecting flange is arranged at a vibration zero point.

[0014] Further, the side wall of the supporting shell is further provided with an air inlet and an air outlet respectively, and cooling gas is introduced to cool the composite driving assembly.

[0015] Further, the end of the tool bar is provided with a mounting groove, and the tool is arranged in the mounting groove through a pressing part; and the tool tip of the tool protrudes from the end of the tool bar.

[0016] Further, the first connecting flange is arranged at the middle part of the tool bar, and the second connecting flange and the third connecting flange are arranged on both sides of the composite driving assembly.

[0017] Compared with the prior art, the beneficial effects of the utility model are that:

[0018] The utility model discloses a composite driving assembly is arranged, drives the tool bar and drives the tool to vibrate along the elliptical track, and the included angle between the plane where the motion track C is and the rake face of the tool can be adjusted, and the structure is simple, the function is reliable, and different processing requirements can be met, and the working efficiency and machining precision of turning processing can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without paying creative labor for the person skilled in the art. Wherein:

[0020] Figure 1 It is the structure diagram of the elliptical ultrasonic turning mechanism in the utility model.

[0021] Figure 2 It is the principle diagram of the elliptical ultrasonic turning mechanism in the utility model.

[0022] Figure 3 It is the structure diagram of the composite driving assembly example one in the utility model.

[0023] Figure 4 It is the structure diagram of the second example of the composite driving assembly in the utility model.

[0024] Figure 5 It is an example diagram of the angle between the plane where the motion track is located and the rake face.

[0025] Figure 6 It is another example diagram of the angle between the plane where the motion track is located and the rake face.

[0026] Figure 7 It is another example diagram of the angle between the plane where the motion track is located and the rake face.

[0027] Figure 8 It is an example diagram of the connection flange arrangement in the utility model.

[0028] Figure 9 It is another example diagram of the connection flange arrangement in the utility model.

[0029] Wherein, 10 - support shell, 11 - air inlet, 12 - air outlet, 20 - cutter bar, 30 - cutter, 31 - rake face, 40 - composite driving assembly, 41 - longitudinal vibration ceramic sheet, 42 - composite bending vibration unit, 51 - first connection flange, 52 - second connection flange, 53 - damping groove, 54 - third connection flange. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, for example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like specify orientations or positions as shown in the drawings and are used for convenience in describing the present utility model; it is not to be construed as limiting the present utility model.

[0031] The terms "comprise", "comprising", "include", "including", "have", "has", "have", "having", or their variants as used herein are intended to cover a non-exclusive inclusion. The terms "first", "second", and the like in the description and in the claims of the utility model and the above drawing description are used to distinguish different objects, not to describe a specific order. In the description and claims of the utility model and the above drawing description, when an element is referred to as "fixed to" or "mounted to" or "disposed to" or "connected to" another element, it can be directly or indirectly on the other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to the other element.

[0032] In addition, the reference to "embodiments" in this document means that the specific features, structures or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the utility model. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment independent of or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] Referring to Figure 1 and Figure 2 The utility model provides an elliptical ultrasonic turning mechanism, which comprises:

[0034] A support shell 10;

[0035] A tool bar 20 is partially arranged in the inner cavity of the support shell 10, and the end of the tool bar 20 is provided with a tool 30; a composite driving assembly 40 is arranged on the tool bar 20, which is used for driving the tool bar 20 and the tool 30 to perform elliptical vibration;

[0036] The first included angle alpha between the plane where the movement track C of the tool 30 is located and the rake face 31 of the tool 30 is 0° < alpha ≤ 180°.

[0037] In the utility model, the tool bar 20 and the tool 30 are driven by the composite driving assembly 40 to perform elliptical vibration, the included angle between the plane where the movement track of the tool 30 is located and the rake face of the tool 30 is adjusted, the first included angle alpha can be 5°, 10°, 30°, 60°, 90°, 120°, 150°, 180° or any value in the range, which can meet different processing requirements and improve processing precision and efficiency.

[0038] Further, referring to Figure 3As shown, the composite drive assembly 40 includes a longitudinal vibration drive module and a bending vibration drive module arranged coaxially. The longitudinal vibration drive module includes a plurality of longitudinal vibration ceramic plates 41, and the bending vibration drive module includes a plurality of composite bending vibration units 42. Each composite bending vibration unit 42 includes at least two bending vibration ceramic plates 421 arranged facing each other. An adjustment surface 422 is formed between adjacent bending vibration ceramic plates 421, and the adjustment surface 422 forms a set angle with the front blade surface 31.

[0039] For details, please refer to Figure 3 and Figure 4 As shown, multiple longitudinal vibrating ceramic plates 41 and multiple composite bending vibration units 42 can be arranged coaxially in sequence, or multiple composite bending vibration units 42 can be located between opposite longitudinal vibrating ceramic plates 41, or multiple longitudinal vibrating ceramic plates 41 and composite bending vibration units 42 can be arranged alternately. All of these can enable the composite drive assembly 40 to drive the tool holder 20 and drive the tool 30 to perform elliptical vibration.

[0040] Specifically, the composite bending vibration unit 42 can adopt multiple bending vibration ceramic plates 421 arranged in a ring structure along the circumference, and the adjustment surface 422 and the rake face 31 form a set angle, so as to adjust the relationship between the movement trajectory of the tip of the tool 30 and the rake face 31 to meet different processing requirements.

[0041] Furthermore, the second included angle β formed between the adjustment surface 422 and the rake face of the tool 30 is 0°≤β≤90°. Adjusting the size of the second included angle β can change the size of the first included angle α, thereby adjusting the position of the movement trajectory of the tool 30 to meet different processing requirements and specific processing conditions.

[0042] Specifically, the second included angle β can take values ​​of 0°, 30°, 45°, 60°, 75°, 90°, or any value within the range described above. Figure 5 The plane containing the tool movement trajectory C is at a certain angle to the rake face 31 of the tool 30. By changing the position of the adjustment surface 422, the plane containing the movement trajectory C can be made perpendicular to the rake face 31 of the tool 30. Figure 6 As shown in the figure, or the plane containing the motion trajectory C can be made parallel to the rake face 31 of the tool 30. Figure 7 As shown in the figure, it can meet different processing needs.

[0043] Furthermore, at least one connecting flange is provided between the tool holder 20 and the support housing 10. The connecting flange is provided with a vibration damping groove and is set as a vibration zero point, which can ensure the installation reliability of the tool holder 20, reduce the leakage of ultrasonic vibration energy, and ensure the structural stability of the support housing 10.

[0044] Specific, the outer periphery of the cutter bar 20 and the inner wall of the support shell 10 are sequentially provided with a first connecting flange 51 and a second connecting flange 52 along the axial direction, the first connecting flange 51 is located at the middle of the cutter bar 20, and the second connecting flange 52 and the cutter 30 are located at the opposite ends of the cutter bar 20. Figure 8 It can be understood that the first connecting flange 51 and the second connecting flange 52 can be arranged at the middle of the cutter bar 20 (as shown), and the reliability of the connection between the cutter bar 20 and the support shell 10 can be realized.

[0045] Specifically, according to the length of the cutter bar 20, the number of connecting flanges can be increased or decreased, Figure 9 As shown in the middle, the first connecting flange 51, the second connecting flange 52 and the third connecting flange 54 are sequentially arranged between the cutter bar 20 and the support shell 10, the second connecting flange 52 and the third connecting flange 54 are located on both sides of the composite driving assembly 40, and the reliability of the cooperation between the cutter bar 20 and the support shell 10 is ensured. The connecting flanges (51, 52, 54) are all provided with damping grooves 53 and are all set as vibration zero points, so that the ultrasonic vibration can be avoided to be transmitted to the support shell 10.

[0046] Further, the side wall of the support shell 10 is also respectively provided with an air inlet 11 and an air outlet 12 (as shown in the middle), which is used for introducing cooling gas to cool the composite driving assembly 40, and the reliability of the working of the composite driving assembly 40 can be ensured. Figure 1

[0047] Specifically, since the multiple piezoelectric ceramic sheets in the composite driving assembly 40 generate heat when working with the power supply, by arranging the air inlet 11 and the air outlet 12 and introducing cooling gas, the heat can be avoided to affect the reliability of the working of the composite driving assembly 40. It can be understood that the air inlet 11 and the air outlet 12 can be arranged on different side walls of the support shell 10 according to actual needs.

[0048] Further, the end of the cutter bar 20 is provided with a mounting groove, the cutter 30 is arranged in the mounting groove through the pressing piece 31, the stability and reliability of the cutter 30 can be ensured, and the cutter tip of the cutter 30 protrudes from the end of the cutter bar 20, so that the workpiece can be conveniently machined.

[0049] In the utility model, the structure is simple, the function is reliable, different machining requirements can be met, and the working efficiency and machining precision of turning machining can be improved.

[0050] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination and simplification made without departing from the spirit and principle of the utility model should be equivalent replacement, and all are included in the protection scope of the utility model.​

Claims

1. An elliptical ultrasonic turning mechanism, characterized by: The utility model relates to a cutting tool, comprising: a support housing; a cutter bar partially arranged in an inner cavity of the support housing, an end of the cutter bar being provided with a cutting tool; a composite driving assembly is arranged on the cutter bar for driving the cutter bar and the cutting tool to perform elliptical vibration; a first included angle alpha between a plane where a motion track of the cutting tool is located and a rake face of the cutting tool is 0° < alpha <= 180°.

2. The elliptical ultrasonic turning mechanism according to claim 1, characterized in that: The composite driving assembly comprises coaxially arranged longitudinal vibration driving modules and bending vibration driving modules, the longitudinal vibration driving modules comprise a plurality of longitudinal vibration ceramic sheets, and the bending vibration driving modules comprise a plurality of composite bending vibration units.

3. The elliptical ultrasonic turning mechanism according to claim 2, characterized in that: The composite bending vibration unit comprises at least two oppositely arranged bending vibration ceramic sheets, an adjusting surface is formed between adjacent bending vibration ceramic sheets, and a set included angle between the adjusting surface and the rake face is formed.

4. The elliptical ultrasonic turning mechanism according to claim 3, characterized in that: A second included angle beta between the adjusting surface and the rake face of the cutting tool is 0° <= beta <= 90°.

5. Elliptical ultrasonic turning mechanism according to any one of claims 1 to 4, characterized in that At least one connecting flange is arranged between the cutter bar and the support housing, a damping groove is arranged on the connecting flange, and the connecting flange is arranged at a vibration zero point.

6. The elliptical ultrasonic turning mechanism according to claim 5, characterized in that: A side wall of the support housing is further respectively provided with an air inlet and an air outlet for introducing cooling gas to cool the composite driving assembly.

7. The elliptical ultrasonic turning mechanism according to claim 1 or 6, characterized in that: An end of the cutter bar is provided with a mounting groove, the cutting tool is arranged in the mounting groove through a pressing member, and a cutting tip of the cutting tool protrudes from the end of the cutter bar.

8. The elliptical ultrasonic turning mechanism according to claim 5, characterized in that: First, second and third connecting flanges are sequentially arranged between the cutter bar and the support housing along an axial direction of the cutter bar, the first connecting flange is located at a middle part of the cutter bar, and the second and third connecting flanges are located at two sides of the composite driving assembly.

Images