TWI718023B - Shock absorption damping structure of tool holder - Google Patents

Abstract

A shock-absorbing and damping structure for a tool holder, in particular, a pair or a plurality of pairs of accommodating holes arranged in parallel and symmetrically arranged on both sides of the tool holder, the accommodating holes can accommodate and set a damping element, and both ends of the damping element are provided There are two sockets, which are used to sleeve two elastic damping rings. The inner diameter of the accommodating hole is greater than the outer diameter of the damping element and is equivalent to the outer diameter of the elastic damping ring, so that the accommodating hole A clearance space is maintained between the damping element and the accommodating hole. A closing element is provided at the outer end of the accommodating hole. When the tool holder is cutting and vibrates, the damping element and the elastic damping ring are used to generate a counterbalanced force And to achieve the purpose of shock absorption, its characteristics.

Description

Shock absorption damping structure of tool holder

The shock-absorbing damping structure of the tool seat of the invention is mainly applied to the technology of damping vibration by using the damping element and the elastic shock-absorbing ring to generate the oppositely balanced force when the tool seat is cutting vibration.

Existing toolholders will vibrate during processing. Whether the vibration phenomenon is obvious or not depends on the length of the toolholder. Shorter toolholders have less obvious vibration, while longer toolholders have very obvious vibration. , The greater the impact, but for the processing of some large workpieces, the length of the tool bar is relatively longer, and vibration cannot be avoided during processing.

Please refer to the first picture: a schematic diagram of the resonance waveform of the conventional undamped vibration. Among them: due to the resonance effect of the tool bar, the vibration wave cannot be greatly reduced in an instant. From the resonance waveform in the figure, the acceleration is still quite high after a period of time. The vibration will cause the workpiece surface to be rougher. , Produce obvious processing marks, and affect the accuracy of processing, it will also reduce the life of the tool, and at the same time will produce disturbing noise and noise. The existing tool holder generally lacks a shock absorption structure, so it is not conducive to processing large workpieces. It can be seen that there are still existing problems and shortcomings that need to be overcome in the shock absorption design of the existing cutter bar.

Press, the traditional shock-absorbing toolholder is mainly provided with one end of the toolholder An axially recessed accommodating hole, the accommodating hole extends into the shank. The end is set as a closed end and the other end is an open end. A shock-absorbing device is arranged in the receiving hole, and the shock-absorbing device includes at least one The steel ball arranged at the closed end of the accommodating hole, a locking member with the open end of the accommodating hole, and an elastic shock-absorbing member supported between the locking member and the steel ball. When cutting, the cutter bar will generate radial cutting vibration force , The steel ball converts the radial cutting vibration force into an axial vibration force, and then the elastic shock absorber absorbs and consumes the vibration force.

However, in the actual operation and application of the traditional shock-absorbing tool bar, since the elastic shock-absorbing member is generally a spring, when the shock is absorbed and consumed, it is easy to produce elastic fatigue, resulting in low shock-absorbing efficiency, which has yet to be overcome. The problems and deficiencies.

The inventor is currently engaged in the manufacturing and design of related products, and has accumulated many years of practical experience and experience. Aiming at the existing problems and deficiencies of the traditional shock-absorbing tool holders, he actively invests in the spirit of innovation and improvement, and the completed tool seat reduction Earthquake damping structure.

The technical means used by the invention to solve the problem and the effect compared with the prior art are that a pair or a plurality of pairs of accommodating holes arranged in parallel and symmetrical configuration are provided on both sides of the tool holder, and the accommodating holes can accommodate the damping element. The two ends of the damping element are provided with two sockets, which are used to sleeve two elastic damping rings. The inner diameter of the accommodating hole is larger than the outer diameter of the damping element and is equivalent to the outer diameter of the elastic damping ring , To maintain a clearance space between the accommodating hole and the damping element, the outer end of the accommodating hole is provided with a closing element, when the tool holder is cutting vibration, the damping element and the elastic shock-absorbing ring are used to generate The counter-balanced force achieves the purpose of shock absorption, and has an increase in efficiency, which is the one that achieves its main purpose.

In the above-mentioned tool holder shock-absorbing damping structure, the two sockets of the damping element are conical, and the inner end surface of the closing element is provided with a conical shaft holding recess.

The above-mentioned tool holder shock-absorbing and damping structure, wherein: the outer end of the containing hole is provided with an internal thread, and the closing element is provided with an external thread corresponding to the internal thread for locking and fixing to the internal thread, the The outer end surface of the closing element is provided with a line-shaped driving groove, which can be used for inserting and driving a line-shaped hand tool into the driving groove, and is used for locking and fixing the closing element to the receiving hole.

In the above-mentioned tool holder damping structure, the damping element is made of a tungsten-iron alloy material with a higher specific gravity than the tool holder.

In the above-mentioned tool holder shock-absorbing damping structure, the elastic shock-absorbing ring is a ring body made of rubber material.

The above-mentioned tool holder shock-absorbing and damping structure, wherein: the tool holder is installed on the adjusting seat of a tool bar group body, and the corresponding surface of the adjusting seat and the tool holder is provided with a plurality of first and second interlocking Radial parallel teeth. Corresponding screw holes and adjustment holes are provided between the adjusting seat and the tool seat. The adjusting hole is a long hole, so that the plurality of second radial parallel teeth of the tool seat are in the adjusting seat After a plurality of the first radial parallel teeth are radially adjusted and displaced outwardly or inwardly, a screw passes through the adjustment hole of the tool holder to lock and fix the one in the screw hole of the adjustment seat.

10: Toolholder

11: body

12: Adjusting seat

13: The first radial parallel tooth

14: screw hole

20: knife holder

21: Blade

22: second radial parallel tooth

23: adjustment hole

24: receiving hole

25: internal thread

30: Damping element

31: Socket

40: Elastic shock ring

50: closed element

51: External thread

52: drive slot

53: recess

P: Screw

The first picture: is a schematic diagram of the resonance waveform when the conventional vibration is not reduced.

Figure 2: is a three-dimensional exploded schematic view of the present invention.

Figure 3: A schematic diagram of the three-dimensional combination of the present invention.

Figure 4: is a schematic diagram of the cross-sectional assembly of the present invention.

Figure 5: A schematic diagram of the F-F section of Figure 4.

Figure 6: is a schematic diagram of the state of use of the present invention.

Figure 7: is a schematic diagram of the S-S section of Figure 6.

Figure 8: An enlarged schematic diagram of part J of Figure 7.

Figure 9: is a schematic diagram of the damping waveform of the present invention when damping.

In order to make it easier for people who are skilled in the art to understand the structure of the present invention and the functional benefits that can be achieved, a specific embodiment is enumerated with a detailed description of the drawings as follows:

A shock-absorbing and damping structure of the tool holder, please refer to the second, third and fourth figures: a schematic diagram of the three-dimensional decomposition, three-dimensional combination and cross-sectional combination of the present invention. As shown in the fifth figure: the schematic diagram of the F-F cross-section in the fourth figure. The main point is that the tool bar set is connected to the tool bar 10 to assemble a body 11, the body 11 is provided with an adjusting seat 12, and the adjusting seat 12 is provided with a plurality of first radial parallel teeth 13 as an installation It is used for a tool holder 20 that is adjusted to the outside. A blade 21 is locked on the outside of the tool holder 20. The tool holder 20 corresponds to the plurality of first radial parallel teeth 13 of the adjusting seat 12 and a plurality of second radial teeth are provided. Parallel teeth 22. The plurality of second radial parallel teeth 22 of the tool holder 20 are embedded on the plurality of first radial parallel teeth 13 of the adjusting seat 12, between the adjusting seat 12 and the tool holder 20 Corresponding screw holes 14 and adjustment holes 23 are provided. The adjustment hole 23 is a long hole, so that the tool holder 20 uses a plurality of second radial parallel teeth 22 to be parallel to the first radial direction of the adjustment seat 12 After the radial adjustment displacement of the teeth 13 outward or inward, the screw P passes through the adjustment hole of the tool holder 20 23 is locked and fixed in the screw hole 14 of the adjusting seat 12; it is characterized in that:

The tool holder 20 is provided with a pair or a plurality of pairs of accommodating holes 24 arranged in parallel and symmetrically on both sides corresponding to the adjusting hole 23. The accommodating holes 24 are blind holes that are not penetrated, and the accommodating holes 24 can accommodate A rod-shaped damping element 30 is provided. The damping element 30 is made of a tungsten-iron alloy material with a higher specific gravity than the tool holder 20. Two conical socket parts 31 are provided at both ends of the damping element 30. The two socket parts 31 can be used to sleeve two elastic damping rings 40, the two elastic damping rings 40 are ring bodies made of rubber material, and the inner diameter of the containing hole 24 is larger than the outer diameter of the damping element 30, The inner diameter of the accommodating hole 24 is equivalent to the outer diameter of the elastic shock-absorbing ring 40, so that a clearance space is maintained between the damping element 30 and the accommodating hole 24, and an outer end of the accommodating hole 24 is provided The internal thread 25 is used for locking and fixing a closing element 50. The closing element 50 is provided with an external thread 51 for locking and fixing to the internal thread 25. The outer end surface of the closing element 50 is provided with an inline shape The driving groove 52 can be used for inserting and driving a flat-shaped hand tool (not shown) in the driving groove 52 for locking and fixing the closing element 50 to the receiving hole 24. The inner part of the closing element 50 A conical recess 53 is provided on the end surface.

The present invention, which is composed of the above-mentioned component structures, is to provide a shock-absorbing and damping structure of the tool holder, in practical application:

Please refer to Figure 6 which is a schematic diagram of the use state of the present invention. As shown in the seventh figure: the S-S cross-sectional schematic diagram of the sixth figure. And as shown in the eighth figure: an enlarged schematic diagram of the J part of the seventh figure. When the tool holder 20 vibrates due to cutting, the damping element 30 and the elastic damping ring 40 are used to generate a counterbalanced force to achieve the purpose of damping. of.

Please refer to the ninth figure, which is a schematic diagram of the shock absorption waveform of the present invention during shock absorption. Wherein, since the damping element 30 and the elastic shock-absorbing ring 40 will not produce a resonance effect when the shock force is absorbed and consumed, the shock wave can be greatly reduced in an instant. According to the shock absorption waveform in the figure, the acceleration is quite small in a relatively short time, and the shock absorption efficiency is very obvious. For the processing of some large workpieces, when the length of the tool holder 10 is relatively increased, the processing accuracy of the workpiece will not be affected by the rough surface of the workpiece due to vibration, and the life of the tool will be increased, while avoiding disturbing noise and The sound is good for processing large workpieces.

Based on the foregoing, the present invention provides a tool holder shock-absorbing damping structure. After the inventors have actually completed the production and repeated operation tests, it is confirmed that the expected functional benefits of the present invention can indeed be achieved. The unseen first creation has industrial use value. It is true that it complies with the essentials for the establishment of the utility and progress of the invention patent. In accordance with the provisions of the Patent Law, the invention patent application was filed with the Jun Office.

10: Toolholder

11: body

12: Adjusting seat

13: The first radial parallel tooth

14: screw hole

20: knife holder

21: Blade

22: second radial parallel tooth

23: adjustment hole

24: receiving hole

25: internal thread

30: Damping element

31: Socket

40: Elastic shock ring

50: closed element

51: External thread

52: drive slot

P: Screw

Claims (5)

A shock-absorbing and damping structure for a tool holder mainly consists of: the tool holder is mounted on a tool holder group, the tool holder group is assembled with a body, the body is provided with an adjusting seat, and the adjusting seat is provided on the corresponding surface of the tool holder. A plurality of first and second radial parallel teeth fitted with each other, a corresponding screw hole and an adjustment hole are provided between the adjustment seat and the tool seat, and the adjustment hole is a long hole, so that the plurality of After the second radial parallel teeth are radially adjusted and displaced outward or inward on the plurality of first radial parallel teeth of the adjusting seat, they are then locked and fixed to the adjusting hole of the tool seat by a screw. In the screw hole of the adjusting seat, a pair or a plurality of pairs of accommodating holes arranged in parallel and symmetrical configuration are provided on both sides of the knife seat, and the accommodating holes can accommodate and set the damping element, and both ends of the damping element are provided with Two socket parts, the two socket parts can be used to sleeve two elastic damping rings, the inner diameter of the accommodating hole is larger than the outer diameter of the damping element, the inner diameter of the accommodating hole and the outer diameter of the elastic damping ring The diameter is the same, so that a clearance space is maintained between the damping element and the containing hole, and a closing element is arranged at the outer end of the containing hole. The shock-absorbing damping structure of the tool holder according to claim 1, wherein the damping element is made of a tungsten-iron alloy material with a higher specific gravity than the tool holder. The tool holder shock-absorbing damping structure according to claim 1, wherein: the elastic shock-absorbing ring is a ring body made of rubber material. The tool holder damping structure according to claim 1, wherein: the two sockets of the damping element are conical, and the inner end surface of the closing element is provided with a conical recess. The tool holder damping structure according to claim 1, wherein: an internal thread is provided at the outer end of the accommodating hole, and the closing element is provided with an external thread corresponding to the internal thread as a lock For fixing to the internal thread, the outer end surface of the closing element is provided with an inline-shaped driving groove, which can be inserted and driven in the driving groove for an inline-shaped hand tool to lock and fix the closing element to the accommodating Those who use holes.

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