Tool clamping device and vibration broaching machine

Abstract

The present invention relates to a tool clamping device and a vibrating broaching machine. The tool clamping device includes a tool clamping seat, a tool clamping mechanism and a vibration mechanism. A mounting hole is provided at one end of the tool clamping seat. One end of the tool clamping mechanism is slidably inserted into the mounting hole. The tool clamping mechanism has a clamping portion with adjustable size. The clamping portion is used to clamp the broach and make the broaching direction of the broach consistent with the center axis direction of the mounting hole. The vibration mechanism is connected to the tool clamping mechanism and is controlled to provide a vibration force that causes the tool clamping mechanism to vibrate back and forth along the center axis direction of the mounting hole. The provision of the above-mentioned vibration mechanism can improve the cutting efficiency and durability of the broach, thereby enabling the broach to have both a longer service life and higher cutting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of broaching machine manufacturing, in particular to a tool clamping device and a vibration broaching machine. Background Art

[0002] As a metal processing equipment, the broaching machine uses a linear and uniform broaching speed during normal use. During the cutting process, the broach teeth and the processing object are evenly squeezed, which makes the cutting edge of the broach easy to wear and the local temperature is too high, resulting in a decrease in the durability of the broach and cutting efficiency, thereby affecting the use cost of the broaching machine and the broaching efficiency. Summary of the invention

[0003] Based on this, it is necessary to provide a tool clamping device and a vibration broaching machine that can extend the service life of the broach and improve the cutting efficiency in order to address the problems of short broach service life and low cutting efficiency of the traditional broaching machines.

[0004] A tool clamping device comprises a tool clamping seat, a tool clamping mechanism and a vibration mechanism;

[0005] A mounting hole is formed at one end of the tool holder seat;

[0006] One end of the tool clamping mechanism is slidably disposed in the mounting hole; the tool clamping mechanism has a clamping portion with adjustable size; the clamping portion is used to clamp the broach and make the broaching direction of the broach consistent with the central axis direction of the mounting hole;

[0007] The vibration mechanism is connected to the knife clamping mechanism and is controlled to provide a vibration force that causes the knife clamping mechanism to reciprocate along the center axis direction of the mounting hole.

[0008] In some embodiments, the vibration mechanism includes a vibration driving member, a vibration plate, and a vibration block fixedly connected to the knife clamping mechanism;

[0009] The vibration plate is rotatably mounted on the tool holder seat and protrudes from one end of the tool holder seat where the mounting hole is provided; a vibration portion is circumferentially provided on a surface of one side of the vibration plate that is away from or toward the mounting hole; a side of the vibration portion that is away from the vibration plate has a vibration surface that is undulating along the circumference of the vibration plate;

[0010] The vibration block is at least partially stacked with the vibration disk; a matching portion that is slidably in contact with the vibration surface is provided on a surface of the vibration block facing the vibration disk;

[0011] The vibration driving member is used to drive the vibration plate to rotate, so as to drive the matching portion to vibrate back and forth along the central axis direction of the mounting hole.

[0012] In some embodiments, the vibration part is a plurality of vibration teeth arranged at intervals along the circumference of the vibration disk; the plurality of vibration teeth are arranged radially around the central axis of the vibration disk; the matching part is a convex column arranged on the side of the vibration block facing the vibration disk; in the circumferential direction of the vibration disk, the dimension of the convex column away from the end of the vibration block is smaller than the tooth groove width between two adjacent vibration teeth; or

[0013] The vibration part is a vibration ring arranged along the circumference of the vibration disk; the vibration ring has the vibration surface on a side away from the vibration disk; the matching part is a convex column slidably abutting against the vibration surface; or

[0014] The vibration part is an annular groove formed on the surface of the vibration disk facing the vibration block along the circumference of the vibration disk; the bottom surface of the annular groove serves as the vibration surface, which is a tortuous surface with ups and downs along the circumference of the vibration disk; the matching part is a convex column extending into the annular groove and slidably abutting against the vibration surface.

[0015] In some embodiments, the vibration mechanism further includes a first elastic member; the first elastic member is used to provide an elastic force that drives the vibration block to move in a direction toward the vibration plate, so as to slidably hold the matching portion against the vibration surface.

[0016] In some embodiments, the portion of the tool clamping mechanism located outside the mounting hole has a clamping surface facing the mounting hole; the clamping surface extends circumferentially along the mounting hole; the vibration block is located on the side of the vibration plate facing the mounting hole; the first elastic member is a butterfly spring; the first elastic member is clamped between the clamping surface and a side surface of the tool clamp seat on which the mounting hole is provided.

[0017] In some embodiments, the vibration mechanism also includes a second elastic member; the second elastic member is used to provide an elastic restoring force that drives the knife clamping mechanism to move in a direction opposite to the elastic force of the first elastic member; the elastic force provided by the first elastic member is greater than the elastic restoring force provided by the second elastic member.

[0018] In some embodiments, the second elastic member is a butterfly spring; the tool holder seat includes a base and a bracket arranged on the base; the bracket is provided with the mounting hole penetrating the bracket;

[0019] The knife clamping device also includes a locking piece; one end of the knife clamping mechanism passes through the mounting hole and is connected to the locking piece; the second elastic piece is sleeved on one end of the knife clamping mechanism located on the bracket facing the base; the locking piece is abutted against the bracket through the second elastic piece.

[0020] In some embodiments, the vibration mechanism is an ultrasonic vibration mechanism; the ultrasonic vibration mechanism includes an ultrasonic generator and an ultrasonic transducer connected to the knife clamping mechanism; the ultrasonic generator is connected to the ultrasonic transducer, and is used to drive the ultrasonic transducer to drive the knife clamping mechanism to vibrate back and forth along the central axis direction of the mounting hole.

[0021] In some embodiments, there are multiple vibration mechanisms; the multiple vibration mechanisms are arranged at intervals along the circumference of the mounting hole and are used to provide a vibration force that synchronously drives the knife clamping mechanism to vibrate along the central axis direction of the mounting hole; and / or

[0022] The tool clamping device further comprises an axial limiter; the axial limiter is mounted on the tool clamping seat and is used to limit the circumferential position of the vibration block along the mounting hole.

[0023] A vibration broaching machine comprises a bed, the tool clamping device as described above and a broach; the tool clamp seat is installed on the bed; and the broach is clamped in the clamping part.

[0024] In the above-mentioned tool clamping device and vibration broaching machine, the broaching direction of the broach is consistent with the central axis direction of the mounting hole, so when the vibration mechanism provides vibration force for the tool clamping mechanism, the tool clamping mechanism can be driven to drive the broach to vibrate back and forth along the broaching direction of the broach. When it is necessary to use a vibration broaching machine to broach the workpiece, the broach with slight vibration in the broaching direction, its cutting edge will not be in constant pressure contact with the surface of the workpiece during the entire broaching process, so that the coolant can easily enter between the cutting edge of the broach and the surface of the workpiece, so as to reduce the increase in cutting temperature, reduce the probability of the broach being worn and corroded, improve the wear resistance and corrosion resistance of the broach, and make the broach more durable. Furthermore, by using a broach that generates a slight vibration in the broaching direction to perform vibration broaching on the workpiece, the cutting force can be reduced to 1 / 5 to 1 / 10 of that of conventional cutting, which is conducive to improving the broaching efficiency. Therefore, the setting of the above-mentioned tool clamping device can effectively improve the cutting efficiency and durability of the broach, so that the broach can have both a longer service life and a higher cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a knife clamping device in one embodiment of the present invention;

[0026] Figure 2 for Figure 1 A cross-sectional view of the knife clamping device shown;

[0027] Figure 3 for Figure 1 A top view of the tool clamping device shown.

[0028] Explanation of reference numerals: 100, tool clamping device; 110, tool clamp seat; 111, mounting hole; 112, base; 113, bracket; 120, tool clamping mechanism; 121, clamping portion; 122, clamping surface; 130, vibration mechanism; 131, vibration driving member; 132, vibration disk; 1321, vibration portion; 133, vibration block; 1331, mating portion; 134, reducer; 135, first elastic member; 136, second elastic member; 140, locking member; 200, broach. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.

[0032] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0033] The present invention provides a tool clamping device and a vibration broaching machine. The vibration broaching machine comprises a bed, a tool clamping device and a broach. The tool clamping device is installed on the bed and is used to clamp and position the broach. Specifically, the vibration broaching machine also includes a positioning fixture installed on the bed, and the positioning fixture is used to position a workpiece to facilitate subsequent broaching of the workpiece by the broach.

[0034] Figure 1 and Figure 2 The structure of a tool clamping device 100 with adjustable height of a broach 200 in one embodiment of the present invention is shown. For ease of description, the drawings only show structures related to the embodiment.

[0035] See also Figure 1 and Figure 2 The tool clamping device 100 in a preferred embodiment of the present invention includes a tool clamping seat 110, a tool clamping mechanism 120 and a vibration mechanism 130.

[0036] The tool holder 110 mainly plays a supporting and connecting role. In a vibrating broaching machine, the tool holder 110 is installed on the bed to install the tool clamping device 100 on the bed. A mounting hole 111 is opened at one end of the tool holder. The mounting hole 111 is set at one end of the tool clamping device 100 for mounting the broach 200. For example, in a vertical broaching machine, the mounting hole 111 is opened at the top of the broach 200 seat.

[0037] One end of the knife clamping mechanism 120 is slidably inserted into the mounting hole 111. The knife clamping mechanism 120 has a clamping portion 121 of adjustable size. The clamping portion 121 is used to clamp the broach 200 and make the broaching direction of the broach 200 consistent with the central axis direction of the mounting hole 111. Thus, the central axis direction of the mounting hole 111 is consistent with the longitudinal direction of the broach 200 (i.e., the broaching direction). For example, in a vertical broaching machine, the mounting hole 111 is a vertical hole.

[0038] The clamping mechanism 120 is a combined structure composed of multiple parts, and the multiple parts cooperate with each other to realize the clamping and disassembly of the broach 200; the clamping part 121 is a virtual space, and the size of the clamping part 121 can be adjusted by changing the distance or structure between the multiple parts constituting the virtual space. Specifically, when the size of the clamping part 121 is adjusted to a smaller size, the broach 200 can be clamped and positioned in the clamping part 121, and when the size of the clamping part 121 is adjusted to a larger size, the clamping part 121 releases the broach 200 to facilitate the disassembly of the broach 200.

[0039] The vibration mechanism 130 is connected to the tool clamping mechanism 120, and is controlled to provide a vibration force that causes the tool clamping mechanism 120 to reciprocate along the central axis of the mounting hole 111. In actual use, the vibration mechanism 130 can provide the tool clamping mechanism 120 with a vibration force that drives the tool clamping mechanism 120 to reciprocate along the central axis of the mounting hole 111, thereby driving the broach 200 to reciprocate along its broaching direction, thereby enabling the vibration broaching machine to achieve vibration broaching.

[0040] During the process of vibratory broaching of the workpiece using a vibratory broaching machine, since the broaching tool 200 generates a slight vibration in the broaching direction, the enlarged cutting edge portion will not be in contact with the surface of the workpiece surface throughout the broaching process. Therefore, the coolant can easily enter between the pulled cutting edge portion and the surface of the workpiece during the broaching process to reduce the increase in cutting temperature, reduce the probability of the broaching tool 200 being worn and corroded, and improve the wear resistance and corrosion resistance of the broaching tool 200, thereby making the broaching tool 200 more durable and helping to extend the service life of the broaching tool 200.

[0041] Furthermore, by using a broach 200 that generates a slight vibration in the broaching direction to vibrate broach the workpiece, the cutting force can be reduced to 1 / 5 to 1 / 10 of the conventional cutting force, which is beneficial to improving the broaching efficiency. Therefore, the arrangement of the tool clamping device 100 can effectively improve the cutting efficiency and durability of the broach 200, so that the broaching can take into account both a longer service life and a higher cutting efficiency.

[0042] In addition, since the broach 200 performs vibration broaching on the surface of the workpiece, the cutting fluid can more easily enter between the cutting edge of the broach 200 and the surface of the workpiece, thereby promoting the cooling and lubricating effects of the cutting fluid, reducing the surface roughness of the workpiece surface after processing, improving the broaching accuracy, and obtaining a processed surface with low residual stress. Moreover, the above-mentioned vibration broaching method can also improve the chip removal performance during the broaching process, eliminate the built-up edge, and facilitate the removal of burrs.

[0043] In one embodiment, the vibration mechanism 130 is an ultrasonic vibration mechanism. The ultrasonic vibration mechanism includes an ultrasonic generator (not shown) and an ultrasonic transducer (not shown) connected to the knife clamping mechanism 120. The ultrasonic generator is connected to the ultrasonic transducer and is used to drive the ultrasonic transducer to drive the knife clamping mechanism 120 to vibrate back and forth along the central axis of the mounting hole 111. When the vibration frequency needs to be changed, it can be achieved by generating ultrasonic waves of different frequencies through an ultrasonic generator. In actual use, the ultrasonic signal generated by the ultrasonic generator is used to control the knife clamping mechanism 120 to drive the broach 200 to vibrate.

[0044] In another embodiment, the vibration mechanism 130 includes a vibration driving member 131, a vibration disk 132, and a vibration block 133 fixedly connected to the knife clamping mechanism 120. The vibration disk 132 is rotatably mounted on the tool clamp seat 110, and protrudes from one end of the tool clamp seat 110 where the mounting hole 111 is provided. A vibration portion 1321 is circumferentially provided on a side surface of the vibration disk 132 that is away from or toward the mounting hole 111. The side of the vibration portion 1321 that is away from the vibration disk 132 has a vibration surface (not marked in the figure) that is undulating along the circumference of the vibration disk 132. Among them, the vibration surface can be an undulating circumferential curved surface, or it can be an undulating circumferential bent surface.

[0045] The vibration block 133 is at least partially stacked with the vibration disk 132. A mating portion 1331 that slidably contacts the vibration surface is provided on one side surface of the vibration block 133 facing the vibration disk 132. The vibration driving member 131 is used to drive the vibration disk 132 to rotate, so as to drive the mating portion 1331 to reciprocate along the central axis direction of the mounting hole 111. Specifically, the vibration driving member 131 is a servo motor, and the output shaft of the vibration driving member 131 is connected to the vibration disk 132 through a reducer 134 to drive the vibration disk 132 to rotate.

[0046] When the vibration broaching machine is a vertical broaching machine, the vibration block 133 can be above the vibration plate 132 or below the vibration plate 132. In actual application, when the vibration driving member 131 drives the vibration plate 132 to rotate, the matching portion 1331 slides on the vibration surface along the circumference of the vibration plate 132, so as to use the undulating vibration surface to push the matching portion 1331 to drive the clamping mechanism 120 to vibrate back and forth along the central axis direction of the mounting hole 111, so as to facilitate the subsequent vibration broaching of the broach 200 clamped in the clamping portion 121, so the vibration mechanism 130 is a mechanical vibration mechanism 130.

[0047] Further, in one embodiment, the vibration portion 1321 is a plurality of vibration teeth arranged at intervals along the circumference of the vibration disk 132. The plurality of vibration teeth are arranged radially around the central axis of the vibration disk 132. The matching portion 1331 is a convex column arranged on the side of the vibration block 133 facing the vibration disk 132. In the circumference of the vibration disk 132, the dimension of the convex column away from the end of the vibration block 133 is smaller than the tooth groove width between two adjacent vibration teeth. As a result, the surface of the plurality of vibration teeth forms an undulating vibration surface along the circumference of the vibration disk 132.

[0048] The dimension of the end of the boss away from the vibration block 133 is set to be smaller than the width of the tooth groove between two adjacent vibration teeth to ensure that the boss can extend into the tooth groove between two adjacent vibration teeth, and to ensure that the boss can extend into the tooth groove between two adjacent vibration teeth when sliding circumferentially along the vibration disk 132 in the vibration surface, so as to ensure the vibration effect.

[0049] Further, in another embodiment, the vibration part 1321 is a vibration ring arranged along the circumference of the vibration disk 132. The vibration ring can be fixed on the vibration disk 132 by welding, screwing, clamping, etc. The vibration ring has a vibration surface on the side away from the vibration disk 132. The matching part 1331 is a convex column that can slidably abut against the vibration surface. Setting the vibration part 1321 as a vibration ring can reduce the difficulty of processing the vibration part 1321 and the vibration disk 132, thereby making the processing of the tool clamping device 100 easier.

[0050] Furthermore, in another embodiment, the vibration portion 1321 is an annular groove formed on the surface of the vibration disk 132 facing the vibration block 133 along the circumference of the vibration disk 132. The bottom surface of the annular groove serves as a vibration surface, which is a zigzag surface with ups and downs along the circumference of the vibration disk 132. The matching portion 1331 is a convex column extending into the annular groove and slidably abutting against the vibration surface.

[0051] In the above embodiments, the boss can be a protruding structure formed on the vibration disk 132 by welding, machining, casting, etc., or it can be a rod-shaped part (for example, a bolt, rivet, pin, etc.) installed on the vibration disk 132 by screwing, clamping, etc.

[0052] Of course, in the embodiment of the present invention, the structure of the vibration part 1321 and the matching part 1331 is not limited to the structure in the above embodiment, and can also be other structural forms that can enable the knife clamping mechanism 120 to achieve reciprocating vibration, which will not be listed one by one again.

[0053] Please refer again Figure 1 and Figure 2 Furthermore, in some embodiments, the vibration mechanism 130 further includes a first elastic member 135. The first elastic member 135 is used to provide an elastic force that drives the vibration block 133 to move in a direction toward the vibration disk 132, so as to slidably hold the matching portion 1331 against the vibration surface. The first elastic member 135 can be a metal spring, a compression spring, a butterfly spring, etc. The provision of the first elastic member 135 can ensure that the vibration portion 1321 can effectively hold against the vibration surface, thereby improving the operating stability of the tool clamping device 100 and facilitating the improvement of the reliability of the vibration broaching machine.

[0054] Furthermore, the portion of the tool clamping mechanism 120 located outside the mounting hole 111 has a clamping surface 122 facing the mounting hole 111. The clamping surface 122 extends along the circumference of the mounting hole 111. The vibration block 133 is located on the side of the vibration plate 132 facing the mounting hole 111. The first elastic member 135 is a butterfly spring. The first elastic member 135 is clamped between the clamping surface 122 and a side surface of the tool clamp seat 110 provided with the mounting hole 111.

[0055] When the vibration broaching machine is located on a horizontal plane, the vibration block 133 is located below the vibration plate 132, and the clamping surface 122 is the surface facing the tool clamping mechanism 120. The first elastic member 135 is clamped between the clamping surface 122 and the surface of the tool holder 110 on the side where the mounting hole 111 is provided, so as to realize the installation of the first elastic member 135. The first elastic member 135 is set as a butterfly spring in order to facilitate the adjustment of the elastic force of the first elastic member 135. In actual application, the elastic force of the first elastic member 135 can be adjusted by adjusting the number of butterfly springs, thereby improving the convenience of using the vibration broaching machine.

[0056] Furthermore, in some embodiments, the vibration mechanism 130 further includes a second elastic member 136. The second elastic member 136 is used to provide an elastic restoring force that drives the knife clamping mechanism 120 to move in a direction opposite to the elastic force direction of the first elastic member 135. The elastic force provided by the first elastic member 135 is greater than the elastic restoring force provided by the second elastic member 136. The second elastic member 136 and the first elastic member 135 may be the same or different.

[0057] Therefore, the direction of the elastic restoring force applied by the second elastic member 136 to the clamping mechanism 120 is exactly opposite to the direction of the elastic force applied by the first elastic member 135 to the clamping mechanism 120, and the elastic restoring force provided by the second elastic member 136 is set to be smaller than the elastic force provided by the first elastic member 135 in order to ensure that the vibrating portion 1321 can maintain effective contact with the vibrating surface. The first elastic member 135 and the second elastic member 136 cooperate with each other to play a reset role in the process of the clamping mechanism 120 driving the broach 200 to vibrate, so as to ensure that the clamping mechanism 120 can vibrate continuously and forcefully.

[0058] Furthermore, in some embodiments, the second elastic member 136 is a butterfly spring. The tool clamp seat 110 includes a base 112 and a bracket 113 disposed on the base 112. A mounting hole 111 that passes through the bracket 113 is provided on the bracket 113. Thus, the mounting hole 111 is a through hole. The tool clamping device 100 also includes a locking member 140. One end of the tool clamping mechanism 120 passes through the mounting hole 111 and is connected to the locking member 140. The second elastic member 136 is sleeved on the end of the tool clamping mechanism 120 located on the bracket 113 facing the base 112. The locking member 140 is abutted against the bracket 113 through the second elastic member 136. Thus, the second elastic member 136 is clamped between the locking member 140 and the bracket 113 to achieve the installation of the second elastic member 136. The locking member 140 is used to lock the tool clamping mechanism 120 in the axial direction to ensure the connection stability and connection reliability between the tool clamping mechanism 120 and the tool holder seat 110 .

[0059] The second elastic member 136 is configured as a butterfly spring to facilitate the adjustment of the elastic force of the second elastic member 136 and improve the convenience of use of the vibration broaching machine. In actual use, the elastic restoring force of the second elastic member 136 can be adjusted by adjusting the number of butterfly springs.

[0060] Please also read Figure 3In some embodiments, there are multiple vibration mechanisms 130. The multiple vibration mechanisms 130 are arranged at intervals along the circumference of the mounting hole 111, and are used to provide a vibration force that synchronously drives the knife clamping mechanism 120 to vibrate along the central axis direction of the mounting hole 111. The number of vibration mechanisms 130 can be more than two. Specifically in this embodiment, the number of vibration mechanisms 130 is two. The provision of multiple vibration mechanisms 130 can increase the vibration force on the knife clamping mechanism 120.

[0061] In some embodiments, the tool clamping device 100 further includes an axial limiter (not shown). The axial limiter is mounted on the tool clamping seat 110 and is used to limit the circumferential position of the vibration block 133 along the mounting hole 111. The provision of the axial limiter can prevent the vibration block 133 from rotating under the drive of the vibration plate 132, effectively ensuring the operating stability of the tool clamping mechanism 120 and the broach 200, so as to further improve the precision and reliability of the broaching process.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A knife clamping device, characterized in that: It includes a tool holder seat, a tool clamping mechanism, a vibration mechanism and an axial limiter; A mounting hole is formed at one end of the tool holder seat; One end of the tool clamping mechanism is slidably disposed in the mounting hole; the tool clamping mechanism has a clamping portion with adjustable size; the clamping portion is used to clamp the broach and make the broaching direction of the broach consistent with the central axis direction of the mounting hole; The vibration mechanism is connected to the knife clamping mechanism and is controlled to provide a vibration force that causes the knife clamping mechanism to vibrate back and forth along the central axis direction of the mounting hole; the vibration mechanism includes a vibration driving member, a vibration disk, a vibration block fixedly connected to the knife clamping mechanism and a first elastic member; the vibration disk is rotatably mounted on one end of the knife clamp seat provided with the mounting hole; a vibration portion is circumferentially arranged on a side surface of the vibration disk that is away from or toward the mounting hole; a side of the vibration portion that is away from the vibration disk has a vibration surface that fluctuates along the circumference of the vibration disk; the vibration block is at least partially stacked with the vibration disk; a matching portion that is slidably in contact with the vibration surface is provided on a side surface of the vibration block that faces the vibration disk; the vibration driving member is used to drive the vibration disk to rotate so as to drive the matching portion to vibrate back and forth along the central axis direction of the mounting hole; the first elastic member is used to provide an elastic force that drives the vibration block to move in a direction toward the vibration disk so as to slidably hold the matching portion against the vibration surface; The axial limiting member is mounted on the tool holder seat and is used to limit the circumferential position of the vibration block along the mounting hole.

2. The tool clamping device according to claim 1, characterized in that: The vibration part is a plurality of vibration teeth arranged at intervals along the circumference of the vibration disk; the plurality of vibration teeth are arranged radially around the central axis of the vibration disk; the matching part is a convex column arranged on the side of the vibration block facing the vibration disk; In the circumferential direction of the vibration disk, the dimension of the protrusion away from one end of the vibration block is smaller than the tooth groove width between two adjacent vibration teeth.

3. The tool clamping device according to claim 1, characterized in that: The vibration part is a vibration ring arranged along the circumference of the vibration disk; the vibration ring has the vibration surface on a side away from the vibration disk; and the matching part is a convex column slidably abutting against the vibration surface.

4. The tool clamping device according to claim 1, characterized in that: The vibration part is an annular groove formed on the surface of the vibration disk facing the vibration block along the circumference of the vibration disk; the bottom surface of the annular groove serves as the vibration surface, which is a tortuous surface with ups and downs along the circumference of the vibration disk; the matching part is a convex column extending into the annular groove and slidably abutting against the vibration surface.

5. The tool clamping device according to claim 4, characterized in that: The portion of the tool clamping mechanism located outside the mounting hole has a clamping surface facing the mounting hole; the clamping surface extends along the circumference of the mounting hole; the vibration block is located on the side of the vibration plate facing the mounting hole; the first elastic member is a butterfly spring; the first elastic member is clamped between the clamping surface and a side surface of the tool clamp seat on which the mounting hole is provided.

6. The tool clamping device according to claim 4, characterized in that: The vibration mechanism also includes a second elastic member; the second elastic member is used to provide an elastic restoring force that drives the knife clamping mechanism to move in a direction opposite to the elastic force direction of the first elastic member; the elastic force provided by the first elastic member is greater than the elastic restoring force provided by the second elastic member.

7. The tool clamping device according to claim 6, characterized in that: The second elastic member is a butterfly spring; the tool holder seat includes a base and a bracket arranged on the base; the bracket is provided with the mounting hole penetrating the bracket; The knife clamping device also includes a locking piece; one end of the knife clamping mechanism passes through the mounting hole and is connected to the locking piece; the second elastic piece is sleeved on one end of the knife clamping mechanism located on the bracket facing the base; the locking piece is abutted against the bracket through the second elastic piece.

8. The tool clamping device according to claim 1, characterized in that: There are multiple vibration mechanisms; the multiple vibration mechanisms are arranged at intervals along the circumference of the mounting hole and are used to provide a vibration force that synchronously drives the knife clamping mechanism to vibrate along the central axis direction of the mounting hole.

9. A vibrating broaching machine, characterized in that: It comprises a bed, a tool clamping device as described in any one of claims 1 to 8, and a broach; the tool clamp seat is installed on the bed; and the broach is clamped in the clamping part.

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