TW202133971A - Shock-absorbing damping structure for tool holder having a plurality of pairs of accommodating holes arranged in parallel and symmetrically on both sides of a tool holder - Google Patents

Abstract

The present invention relates to a shock-absorbing damping structure for a tool holder, and more particularly, to a shock-absorbing damping structure provided with a pair or a plurality of pairs of accommodating holes arranged in parallel and symmetrically on both sides of the tool holder. The accommodating holes are configured to accommodate a damping element. Two ends of the damping element are provided with two sleeving parts, which are configured to be sleeved with two elastic shock-absorbing 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 shock-absorbing ring, such that a clearance space is maintained between the accommodating hole and the damping element. A closing element is provided at the outer end of the accommodating hole. When the tool holder performs cutting and vibrates, the damping element and the elastic shock-absorbing ring are used to generate a counter-balanced force to achieve the purpose of shock-absorbing.

Description

Shock-absorbing 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 is obvious or not depends on the length of the toolholder. Shorter toolholders have less obvious vibration, and 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: the schematic diagram of the resonance waveform when the conventional vibration is not reduced. Among them: due to the resonance effect of the tool bar, it is impossible to greatly reduce the vibration wave 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-absorbing 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 manufacture 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 toolholders, 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 and set 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, a closing element is provided at the outer end of the accommodating hole, 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, which has an increase in efficiency, and 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 in the driving groove, and is used for locking and fixing the closing element to the receiving hole.

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

The above-mentioned shock-absorbing damping structure of the tool holder, wherein: 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 adjusting seat and the tool holder are provided on the corresponding surface 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 is passed through the adjusting hole of the tool holder and locked and fixed in the screw hole of the adjusting 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: accommodating 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 vibration is not damped in the traditional style.

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

The third figure: is a schematic diagram of the three-dimensional combination of the present invention.

The fourth figure: is a schematic diagram of the cross-sectional assembly of the present invention.

Figure 5: is 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: 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 and described in detail with the drawings as follows:

A damping structure of the tool holder, please refer to the second, third and fourth figures: it is 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: 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 of a diameter The tool holder 20 is used to adjust the tool holder 20. The outside of the tool holder 20 is locked with a blade 21. The holder 20 corresponds to the plurality of first radial parallel teeth 13 of the adjusting holder 12 and is provided with a plurality of second radial teeth. Parallel teeth 22, a plurality of the second radial parallel teeth 22 of the tool holder 20 are embedded on the plurality of the 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 plural pairs of accommodating holes 24 arranged in parallel and symmetrically on both sides of the adjusting hole 23. The accommodating holes 24 are blind holes that are not penetrated, and the accommodating holes 24 can be accommodated. 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 accommodating 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 damping 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 The end surface is provided with a conical recess 53.

The present invention, which is a combination of the above-mentioned element structures, is to provide a tool holder shock-absorbing and damping structure, which is practically applied:

Please refer to the sixth figure: it is a schematic diagram of the use state of the present invention. As shown in the seventh figure: is 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 counter-balanced force to achieve the purpose of damping. of.

Please refer to the ninth figure: a schematic diagram of the damping waveform of the present invention when damping. 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 damping waveform in the figure, the acceleration is quite small in a relatively short period of time, and the damping efficiency is very obvious. For the machining of some large workpieces, when the length of the tool holder 10 is relatively increased, the machining 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 inventor’s actual fabrication 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 indeed in line with the essentials for the establishment of the utility and advancement of the invention patent. In accordance with the provisions of the Patent Law, the invention patent application was filed with the Jun Bureau.

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: accommodating 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 (6)

A shock-absorbing and damping structure for a tool holder mainly consists of: 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, the two sockets 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 elastic damping ring The outer diameter is equivalent, so that a clearance space is maintained between the damping element and the accommodating hole, and a closing element is arranged at the outer end of the accommodating hole. The tool holder shock-absorbing damping structure 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 shock-absorbing and 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, and is fixed to the inner thread as a lock For threaded use, the outer end surface of the closing element is provided with a linear drive groove, which can be inserted and driven by a linear hand tool in the drive groove, and is used for locking and fixing the sealing element to the receiving hole. The tool holder shock-absorbing and damping structure according to claim 1, wherein: the tool holder is installed in a tool holder group, the tool holder group is assembled with a body, and the body is provided with an adjusting seat, the adjusting seat and the knife The corresponding surface of the seat is provided with a plurality of first and second radial parallel teeth that are fitted with each other. Corresponding screw holes and adjustment holes are provided between the whole 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 on the plurality of first teeth of the adjusting seat. After the radial adjustment and displacement of the radial parallel teeth outward or inward, the screw passes through the adjustment hole of the knife holder and locks and fixes the screw hole of the adjustment holder.

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