TWM501904U - Shock absorbing knife - Google Patents

Description

Damping tool

The present invention relates to a tool, and more particularly to a damping tool that is mounted on a machine tool to machine a workpiece.

A tool generally mounted on a machine tool can be mounted on the bottom of a tool head. However, since the tool does not have a shock absorbing effect, the tool is often used for cutting a workpiece because of the force between the tool head and the workpiece. The vibration is generated, so that the processing precision is lowered.

Referring to Fig. 1, a damping tool proposed in the certificate No. M293103 is suitable for mounting a cutter head 8, and comprises a cutter seat 7, a steel ball 6, and an elastic shock absorbing unit 5. The holder 7 includes a base rod 71 extending up and down, a mounting head 72, and a lock 73. The base rod 71 defines a receiving groove 74 for receiving the steel ball 6 and the elastic shock absorbing unit 5. The mounting head 72 is connected to the bottom end of the base rod 71 and the cutter head 8 is mounted. The locking member 73 is screwed to the base rod 71 and closes the top of the receiving groove 74. The steel ball 6 is disposed at the bottom of the receiving groove 74 and abuts against the bottom wall surface of the receiving groove 74. The upper and lower ends of the elastic shock absorbing unit 5 respectively abut the locking member 73 and the steel ball 6, and include a damping column 51 and a compression spring 52 interposed between the steel ball 6 and the damping column 51. And a disc-shaped washer 53 interposed between the locker 73 and the damper post 51.

When a conventional damping tool cuts a workpiece, the workpiece generates a reaction force to the cutter head 8, and the cutter seat 7 is interlocked to generate vibration. At this time, the cutter seat 7 transmits vibration to the steel ball 6, And the vibration is cancelled by the elastic shock absorbing unit. However, the conventional shock absorbing tool must adjust the elastic force of the elastic shock absorbing unit 5 by rotating the locking member 73 to achieve the required shock absorbing effect, and it takes a lot of time to adjust the work. The shock absorbing means needs to be assembled and matched with various components to achieve the purpose of damping, which is less convenient to use. Moreover, the conventional damping tool has an axial extension of the compression spring 52, and the radial damping effect is not good enough.

Therefore, the object of the present invention is to provide a damping tool capable of reducing the vibration generated by cutting and having a simple component structure.

Therefore, the new shock absorbing tool is suitable for installation in a machine tool and can be installed by a cutter head, and comprises: a knife seat and a shock absorbing unit. The tool holder is mountable to the cutter head and includes a base rod and a receiving groove formed inside the base rod. The shock absorbing unit includes a plurality of shock absorbing particles filled in the receiving groove.

The effect of the novel is that the vibration generated by the cutting of the damping tool can be converted into thermal energy by the collision friction of the damping particles filled in the holder to reduce the vibration of the holder, thereby improving the processing. Precision.

1‧‧‧ knife holder

11‧‧‧Base rod

111‧‧‧Note

112‧‧‧ inner wall

12‧‧‧Installation head

13‧‧‧Plate

14‧‧‧容容槽

141‧‧‧ notch

142‧‧‧filled area

2‧‧‧Water injection pipe

21‧‧‧ flow path

22‧‧‧ base

23‧‧‧Leakproof Department

24‧‧‧Water injection head

3‧‧‧Vibration unit

31‧‧‧Vibration particles

9‧‧‧ cutter head

Other features and effects of the novel will be referred to the drawings. The embodiment is clearly presented, wherein: Figure 1 is a cross-sectional view illustrating a conventional shock absorbing tool; and Figure 2 is a cross-sectional view showing one embodiment of the novel damper tool mounted with a tool bit.

Referring to Fig. 2, an embodiment of the novel damping tool is suitable for installation in a machine tool and can be mounted by a cutter head 9, and comprises a knife seat 1, a water injection pipe 2, and a shock absorbing unit 3 .

The holder 1 includes a base rod 11, a mounting head 12 that is connected to the bottom end of the base rod 11 and is mountable by the cutter head 9, and a mounting head 12 mounted to the mounting head 12 for pressing against the cutter head 9 Press plate 13. The base rod 11 has a hollow cylindrical shape extending longitudinally upward and downward, and defines an axial receiving groove 14 , and a sprue that is connected to the bottom end by the receiving groove 14 and has a smaller hole diameter than the receiving groove 14 . 111 and having an inner wall surface 112 surrounding the receiving groove 14. The receiving slot 14 has an upwardly facing slot 141. The mounting head 12 is located at the bottom end of the base rod 11 and does not block the sprue 111.

The water injection pipe 2 is disposed in the receiving groove 14 and has a hollow tubular shape extending longitudinally upward and downward to define a flow passage 21 for allowing coolant to flow in. The water injection pipe 2 includes a base portion 22 axially located in the receiving groove 14, a leakage preventing portion 23 disposed at a bottom end of the base portion 22, and a water injection head portion 24 disposed at a top end of the base portion 22. The base portion 22 is spaced from the inner and outer surfaces of the inner wall surface 112, and the receiving groove 14 is distinguished by a filling portion 142 located at the periphery of the base portion 22. The leakage preventing portion 23 is for blocking a gap between the base portion 22 and the inner wall surface 112 to prevent coolant from flowing into the filling portion 142. The note The water head 24 can be screwed to the top of the receiving groove 14 to close the notch 141. The flow passage 21 penetrates the water injection head 24 up and down, and the base portion 22 and the leakage preventing portion 23 communicate with the sprue 111 to allow the coolant to flow therein and flow to the cutter head 9 via the sprue 111.

The damper unit 3 includes a plurality of shock absorbing particles 31 that are tightly packed in the filling zone 142. The higher the density of the materials of the shock absorbing particles 31, the better the shock absorbing effect, and the shapes of each other may be the same or different, and may be spherical, ellipsoidal, sheet-like, or irregular. In this embodiment, the particle size of each of the shock absorbing particles 31 is about 0.05 mm, but the particle size can be increased or decreased depending on the size of the filling area 142. For example, the particle size of each of the shock absorbing particles 31 can be From 0.01 mm to 1 mm, the above particle diameter refers to the maximum size of each of the shock absorbing particles 31. The specific gravity of each of the shock absorbing particles 31 must be greater than or equal to the base rod 11. In the present embodiment, the base rod 11 is made of steel, and each of the shock absorbing particles 31 is densely textured and has anti-seismic properties. Made of steel for better shock absorption, but each damping particle 31 can also be made of other materials, such as lead or other heavy metal, as long as the specific gravity is greater than the material of the base 11. Just fine.

When the workpiece is cut by the damping tool, the workpiece will generate a reaction force to the cutter head 9, and the cutter seat 1 is vibrated by the linkage. At this time, the shock absorbing unit 3 can vibrate the energy of the cutter seat 1. The collision and friction of the shock absorbing particles 31 with the inner wall surface 112 and the base portion 22, and the bounce, collision and friction between the shock absorbing particles 31 are converted into heat energy and consumed, and thus are used for various directions. Both the vibration and the frequency can have a good shock absorption effect. In addition, in order to provide a sufficient friction area, The particle size of the equal-damping particles 31 cannot be too large, but the particle size is too small to be processed, so that the preferred particle size range of this embodiment is between 0.01 mm and 1 mm. It is worth mentioning that the heat energy generated by the damper unit 3 can also be heat exchanged to the water injection pipe 2, and is discharged by the coolant flowing through the flow path 21, and then the coolant flows to the cutter head 9 again. In order to cool the cutter head 9 which is heated by machining cutting.

In addition, the shock absorbing tool may not include the water injection pipe 2, and the base rod 11 may not have the sprue 111, and the damper unit 3 may be directly filled in the accommodating groove 14. Achieving the above-mentioned shock absorbing effect not only maintains the required shock absorbing function, but also has the advantage of simple component assembly, and is therefore quite practical, and is not limited to this embodiment.

In summary, the shock absorbing tool of the present invention can reduce the vibration generated by the cutting of the damper tool by the collision friction of the damper particles 31 filled in the blade holder 1, thereby reducing the various directions of the blade holder 1. The vibration can not only improve the precision of the processing, but also the component assembly is simple and does not need to be adjusted and corrected, which is quite convenient and practical. In addition, the water injection pipe 2 can also supply a coolant to flow in order to cool the heat generated by the damper unit 3 and the cutter head 9 to prevent the tool holder 1 and the cutter head 9 from affecting the mechanical material property due to high heat. It is indeed possible to achieve the purpose of this new type.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

1‧‧‧ knife holder

11‧‧‧Base rod

111‧‧‧Note

112‧‧‧ inner wall

12‧‧‧Installation head

13‧‧‧Plate

14‧‧‧容容槽

141‧‧‧ notch

142‧‧‧filled area

2‧‧‧Water injection pipe

21‧‧‧ flow path

22‧‧‧ base

23‧‧‧Leakproof Department

24‧‧‧Water injection head

3‧‧‧Vibration unit

31‧‧‧Vibration particles

9‧‧‧ cutter head

Claims (8)

A shock absorbing tool for mounting on a machine tool and for one cutter head mounting, comprising: a tool holder for mounting the cutter head, and including a base rod, and a base formed inside the base rod a receiving groove; and a shock absorbing unit comprising a plurality of shock absorbing particles filled in the receiving groove. The shock absorbing cutter according to claim 1, wherein the shock absorbing particles have a particle diameter of 0.01 to 1 mm. The shock absorbing cutter according to claim 1, wherein the specific gravity of the shock absorbing particles is greater than or equal to the specific gravity of the base rod, respectively. The shock absorbing tool according to claim 1 or 3, wherein the shock absorbing particles are made of tungsten steel or lead material, respectively. The shock absorbing cutter according to claim 1, wherein the base rod has a column shape extending longitudinally upward and downward, and the receiving groove is formed to extend inside and outside the base rod. The damper tool of claim 1, wherein the damper tool further comprises a water injection pipe disposed in the accommodating groove and defining a flow path for the coolant to be injected, wherein the damper unit is located at the base Between the rod and the water injection pipe. The damper tool of claim 6, wherein the turret further comprises a mounting head at the bottom end of the base rod for mounting the cutter head, and a mounting head mounted to the mounting head for pressing against the cutter head The pressure plate has a track at the bottom end of the base rod and communicates with the flow path for the coolant to flow to the cutter head. The damper cutter of claim 7, wherein the accommodating groove extends vertically upward and downward, the water injection pipe includes a base portion axially located in the accommodating groove, and a leakage preventing portion disposed at a bottom end of the base portion. And a water injection head disposed at a top end of the base for injecting a coolant, the flow passage penetrating the water injection head, the base portion and the leakage preventing portion up and down.