JP3100216U - Improvement of tool holder structure - Google Patents

Abstract

An object of the present invention is to provide a tool holder that does not cause vibration or displacement.
The tool comprises a tool holder main body, a lower tip, a triaxial hole bolt, a bite tip, an inclined surface pressure piece, and a fixing screw. A first flat base 31 and a second flat base 52 having different heights are formed in the bite holder, and a localization screw hole 511 of the first flat base 51, a shaft hole 611 of the lower chip 61, and a localization hole 631 of the bite chip 63 are formed. And fixed by a triaxial bolt 62. The side surface of the lower chip 61 is brought into close contact with the second flat base 52, and its side is brought into close contact with the wall 53 of the main body 5. The wall surface of the bite tip 63 is strongly pressed by the front wall surface of the inclined surface pressure piece 65, the top surface of the bite chip 63 is pressed by the localization piece 652 on the top surface, and the side surface of the inclined surface pressure piece 65 is It is brought into close contact with the part 53. When the inclined surface pressure piece is fastened with a fixing screw, the inclined surface 653 comes into contact with and is pressed against the chamfered inclined surface of the second flat base wall, and the bite chip is strongly held.
[Selection diagram] FIG.

Description

(4) The present invention relates to the structure of a tool holder, and more particularly to the structure of a tool holder having high cutting precision without shaking during cutting.

As shown in FIGS. 1 and 2, the known bite holder has a bite tip localization hole 11 and a localization screw hole 12 at the front edge of a main body 1 of the bite holder. The lower tip 21, the bolt 22, and the bite tip 23 are connected in this order, and the C-shaped ring 24, the included angled pressure piece 25, and the positioning screw 26 are sequentially installed in the positioning screw hole 12. The angled pressure piece 25 is joined and presses the bite tip 23.

A T-shaped wall portion 13 is formed at the front edge of the tool holder body 1, and the wall portion 13 is in close contact with the included angled pressure piece 25, and is formed in the backward direction generated in the included angled pressure piece 25. Receive strength.

切削 Although it is possible to perform cutting by the structure of the tool holder described above, there are the following disadvantages in practical use.

Since the bite tip 23 is pressed down only by the included angled pressure piece 25, it easily wobble at the time of work and an imbalance occurs in the received force. As a result, the precision and stability of the cutting are adversely affected. However, there is a concern that the corners may be easily chipped or broken because the cutting process is constantly wobbling, and there is a gap in the stereotactic screw to correct the fixing position, so the included angle type pressure piece constantly vibrates. , Loosen or tear.

The tool holder body 1 is provided with a T-shaped wall portion 13 to enhance stability when receiving a force. However, the T-shaped wall portion 13 is designed in accordance with the design of the tool holder body 1. Due to restrictions, it is impossible to increase the thickness, and the stereotaxic bolt cannot withstand high pressure, and the pressure surface is all supported by the wall, so the wall is easily broken due to insufficient strength. Therefore, long-term cutting or cutting with a large load cannot be performed.

FIGS. 3 and 4 are views showing another known structure of the tool holder. The main feature of the tool holder is that two levels are provided at the front edge of the tool holder body 3, and the bottom layer 31 has , An eccentric locating shaft hole 33 is provided, a rear tier 32 is provided with a locating screw hole 34, and the eccentric locating shaft hole 33 is sequentially provided with a lower tip 41, a locating bolt 42, and a cutting tool. A tip 43 is connected, the positioning bolt 42 has an inclined surface, a bolt 44 is fastened in the positioning screw hole 34, and a beak-shaped pressure plate 45 is provided at the other end of the bolt 44. It is fixed, and the beak-shaped pressure plate 45 has an action of pressing the surface of the cutting tool 43. However, the structure has the following disadvantages.

The tool tip 43 is directly localized by the localization bolt 42, and the localization accuracy is high. However, a gap still remains between the eccentric localization shaft hole 33 and the localization bolt 42. When the tip 43 receives a direct force, it is easily loosened or broken, and since the bite tip 43 is only indirectly fixed, the bite tip 43 is still loose even after the bite tip 43 is installed. Since it is held down only by the beak-shaped pressure plate 45, there is a certain space between the bite tip 43 and the bite holder main body 3, and the bite holder 3 easily vibrates and is displaced or damaged. .

Although it is stably fixed in the eccentric positioning shaft hole 33 by the inclined surface of the positioning bolt 42, the wall portion 35 and the bite tip 43 have a problem in the direction of receiving force and the thickness, so that a relatively large force is applied. Cannot be used, and the cutting tool 43 cannot be used for cutting with a large load. If used under such conditions, the wall portion 35 will be damaged.

In order to solve the drawbacks of the known structure, the present invention installs a stereotactic screw hole, a shaft hole of a lower tip, and a stereotactic hole of a bite tip on the same straight line to increase the degree of close contact between them, It is a main object to provide an improved structure of a tool holder that does not cause displacement.

By using the principle of the slope, shifting the surface receiving the force and the angle receiving the force, and increasing the thickness of the wall, the strength against the received force is increased several times more, and the structure of the tool holder that does not have to worry about breakage Providing improvements is another challenge.

Another object is to provide an improved tool holder structure that is easy to disassemble, has high stability, has a higher effect of positioning and fixing the bite tip, and does not shift or vibrate during cutting. And

。 Another object is to provide an improved tool holder structure capable of performing a relatively deep cutting operation in the long term and free from breakage and error.

と す る Another object is to provide an improved tool holder structure that is not deformed due to the high heat generated during cutting and does not shift the angle of the tool tip or lose accuracy.

In order to solve the above problem, the present invention includes a tool holder main body, a lower tip, a triaxial hole bolt, a bite tip, an inclined surface pressure piece, and a fixing screw. The tool holder main body is provided with a first flat base having a different height on the side of the front edge, a second flat base, the first flat base is lower than the second flat base, and on the other side, A wall is formed. The first flat base is provided with a stereotactic screw hole, the second flat base is provided with a fixing screw hole, and the side wall surface top end has a chamfered inclined surface. A shaft hole is provided at the center of the lower chip, and the lower chip is connected to the first flat base at the front edge of the main body, and the shaft hole and the stereotactic screw hole of the first flat base are opposed to each other. A thread is provided at the bottom of the triaxial hole bolt, a convex edge is provided at a position near the top end, and a stereotactic axis is extended on the top surface of the convex edge. The bottom end of the shaft hole bolt penetrates the shaft hole of the lower chip and is fastened to the stereotactic screw hole of the first flat base of the main body, so that the convex edge of the triaxial hole bolt holds down the top surface of the lower chip. The bite tip is connected to the localization axis at the top end of the triaxial hole bolt.The bite tip and the lower tip are located on the first flat base and are in close contact with the wall at the front edge of the main body. are doing. The inclined surface pressure piece is provided with a hole, a localization plate extends on the front side, the rear side has an inclined surface, and the inclined surface pressure piece is connected to the second flat base. The positioning plate on the front side of the inclined surface pressure piece strongly presses the top surface of the bite tip, and the inclined surface on the rear side of the inclined surface pressure piece will move forward by the inclined surface of the second flat base. And tightly adhered to the wall surface of the bite tip, without any gaps, the fixing screw penetrated through the hole of the inclined surface pressure piece and fastened the fixing screw hole of the second flat base, whereby the inclined surface pressure piece Is located, is in close contact with the wall of the main body, and is fixed. For this reason, the tool tip, lower tip, and inclined surface pressure piece are all tightly connected to the main body by the triaxial hole bolt and inclined surface pressure piece, and the force received during cutting is averaged, eliminating vibration. It is possible to maintain high stability and strong cutting.

定 Since the localization screw hole of the first flat base, the shaft hole of the lower tip, and the localization hole of the bite tip are installed on the same straight line, the degree of close contact is high, and no vibration or displacement occurs.

The tool tip is oriented by the leverage principle, the surface receiving the force and the angle receiving the force can be shifted, and by increasing the thickness and area of the wall, the strength against the receiving force is increased several times, There is no worry about damage.

The disassembly of the bite tip is easy, the stability is high, the effect of localization and fixation of the bite tip is even higher, and there is no displacement or vibration during cutting.

比較 的 It is possible to perform relatively deep cutting work in the long term, and there is no breakage or error.

The present invention comprises a tool holder body, a lower tip, a triaxial hole bolt, a bite tip, an inclined surface pressure piece, and a fixing screw. The tool holder main body is provided with a first flat base having a different height on the side of the front edge, a second flat base, the first flat base is lower than the second flat base, and on the other side, A wall is formed. The first flat base is provided with a stereotactic screw hole, the second flat base is provided with a fixing screw hole, and the side wall surface top end has a chamfered inclined surface. A shaft hole is provided at the center of the lower chip, and the lower chip is connected to the first flat base at the front edge of the main body, and the shaft hole and the stereotactic screw hole of the first flat base are opposed to each other. A thread is provided at the bottom of the triaxial hole bolt, a convex edge is provided at a position near the top end, and a stereotactic axis is extended on the top surface of the convex edge. The bottom end of the shaft hole bolt penetrates through the shaft hole of the lower chip and is fastened to the stereotactic screw hole of the first flat base of the main body, so that the protruding edge of the triaxial hole bolt forms the top surface of the lower chip. Hold down, the bite tip is connected to the localization axis at the top end of the triaxial hole bolt, the bite tip and the lower tip are located on the first flat base, and the wall of the main body front edge and Adhering. The inclined surface pressure piece is provided with a hole, a localization plate extends on the front side, the rear side has an inclined surface, and the inclined surface pressure piece is connected to the second flat base. The positioning plate on the front side of the inclined surface pressure piece strongly presses the top surface of the bite tip, and the inclined surface on the rear side of the inclined surface pressure piece will move forward by the inclined surface of the second flat base. And tightly adhered to the wall surface of the bite tip, without any gaps, the fixing screw penetrated through the hole of the inclined surface pressure piece and fastened the fixing screw hole of the second flat base, whereby the inclined surface pressure piece Is located, is in close contact with the wall of the main body, and is fixed. For this reason, the tool tip, lower tip, and inclined surface pressure piece are all tightly connected to the main body by the triaxial hole bolt and inclined surface pressure piece, and the force received during cutting is averaged, eliminating vibration. It is possible to maintain high stability and strong cutting, and a preferred embodiment of the present invention will be described with reference to the drawings.

5 to 7 are an exploded view and a three-dimensional view of the improvement of the structure of the tool holder according to the present invention, which mainly includes a tool holder body 5, a lower tip 61, a triaxial hole bolt 62, and a tool tip. 63, an inclined surface pressure piece 65, and a fixing screw 64.

The tool holder main body 5 is provided with a first flat base 51 and a second flat base 52 having different heights on one side of a front edge, and the first flat base 51 is located at a position lower than the second flat base 52. A wall portion 53 is formed on the other side surface, and the wall portion 53 is provided on a side of the first flat base 51 and the second flat base 52, and has a shape of the first flat base 51. Corresponds to the shape of the cutting tool 63. The first flat base 51 is provided with a positioning screw hole 511, and the second flat base 52 is provided with a fixing screw hole 521. A chamfered inclined surface 522 is provided at the top end of the wall surface.

The lower chip 61 is provided with a shaft hole 611, the shape of which corresponds to the shape of the bite chip 63. The lower chip 61 is connected to the first flat base 51 of the main body 5, and 611 and the orientation screw hole 511 of the first flat base 51 are opposed to each other, the side surface of the lower chip 61 is in close contact with the side surface of the second flat base 52, and the side part is also in close contact with the wall 53 of the main body 5. .

The triaxial hole bolt 62 is provided with a thread 621 at the bottom, a protruding edge 622 at a position near the top end, and a positioning shaft 623 on the top surface of the protruding edge 622. The bottom of the triaxial hole bolt 62 penetrates through the axial hole 611 of the lower chip 61 and is fastened to the orientation screw hole 511 of the first flat base 51 of the main body 5. The edge 622 presses the top end surface of the lower chip 61, and the upper and lower end surfaces of the lower chip 61 are in close contact with the first flat base 51 and the convex edge 622 of the triaxial hole bolt 62, respectively, and there is no gap at all.

The bite tip 63 is provided with a localization hole 631. The localization hole 631 of the bite tip 63 fits into the localization shaft 623 of the triaxial hole bolt 62, and the bite tip 63 is positioned. Is in close contact with the top surface of the tool holder body 5, the bottom surface is in close contact with the protruding edge 622 of the triaxial hole bolt 62, and one side surface of the tool chip 62 is in close contact with the wall 53 of the body 5. are doing.

The inclined surface pressure piece 65 is provided with a hole 651, a localization piece 652 extends on the front side, and the rear side has an inclined surface 653. Combined with the second flat base 52, the hole 651 of the inclined surface pressure piece 65 is opposed to the fixed screw hole 521 of the second flat surface 52, and the inclined surface 653 on the rear side of the inclined surface pressure piece 65 is The chamfered inclined surface 522 of the flat base 52 pushes forward and tries to move, the front side wall surface strongly presses the wall surface of the bite chip 63, and the localization piece 652 on the top surface presses down the top surface of the bite chip 63, and tilts. The surface pressure piece 65 fixes the bite chip 63 by the principle of leverage, and the side surface of the inclined surface pressure piece 65 is in close contact with the wall 53 of the main body 5.

The fixing screw 64 penetrates the hole 651 of the inclined surface pressure piece 65 and is fastened to the fixing screw hole 521 of the second flat base 52 to position the inclined surface pressure piece 65. The cutting tip 63 has a triaxial hole. It is strongly clamped between the convex edge 622 of the bolt 3 and the localization piece 652 of the inclined surface pressure piece 65.

に よ り With the above-described configuration, the structural improvement of the tool holder of the present invention is formed.

FIGS. 6A and 6B show an embodiment of the improved structure of the tool holder according to the present invention. The contact surfaces of the tool tip 63, the lower tip 61, the inclined surface pressure piece 65, and the tool holder body 5 are as follows. When cutting the workpiece 7 without any gaps, the forces received by the bite tip 63, the lower tip 61, and the bite holder body 5 are averaged, and vibration is generated. The tool tip 63 is not easily displaced, and high cutting stability can be maintained. The tool tip 63 is fixed by the principle of leverage by using the inclined surface pressure piece 65 having a large area. Since there is no gap at the contact surface with the bit 63, it can withstand the force 8 directly behind the bite chip 63, and the occurrence of fatigue due to vibration during work is reduced. 63, the lower chip 61, and the inclined surface pressure piece 65 are all in close contact with the wall 53 of the main body 5, and the wall 53 of the main body 5 has a large area and a large thickness. It is difficult to significantly increase the force received by the cutting tool 63 during cutting, and the cutting process can be further strengthened.

FIG. 4 is an exploded view showing a structure of a cutting holder in a known structure. It is a three-dimensional view showing the structure of the cutting holder in a publicly known structure. It is another exploded view which shows the structure of the cutting holder in a well-known structure. It is another three-dimensional drawing which shows the structure of the cutting holder in a well-known structure. FIG. 4 is an exploded view showing an improved structure of the cutting holder according to the present invention. FIG. 3 is a perspective view showing an improved structure of the cutting holder according to the present invention. A and B show the force received by the chip in the assembled state. FIG. 4 is a cross-sectional view illustrating the principle of the slope of the pressure piece according to the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Bite holder main body 11 Byte tip localization hole 12 Localization screw hole 13 Wall 21 Lower tip 22 Bolt 23 Byte tip 24 C-type ring 241 C-type ring 25 Pressure piece 26 Orientation screw 3 Byte holder main body 31 Lower part 32 Higher part 33 Eccentric Localized Shaft Hole 34 Localized Screw Hole 35 Wall 41 Lower Tip 42 Localized Bolt 43 Byte Tip 44 Bolt 45 Beak Type Pressure Plate 5 Byte Holder Body 51 First Flat Board 511 Localized Screw Hole 52 Second Flat Board 521 Fixed Screw Hole 522 Chamfering Incline Surface 53 Wall 61 Lower tip 611 Shaft hole 62 Triaxial hole bolt 621 Thread 622 Convex edge 623 Orientation axis 63 Byte 631 Orientation hole 64 Fixing screw 65 Inclined surface pressure piece 651 Hole 652 Orientation piece 653 Inclined surface 7 Cutting object 8 Force

Claims (4)

It consists of a tool holder body, a lower tip, a triaxial hole bolt, a bite tip, an inclined surface pressure piece, and a fixing screw,
The tool holder main body is provided with a first flat base and a second flat base having different heights on one side of a front edge, and the first flat base is located at a lower position than the second flat base and the other. On the side surface, a wall portion is formed, the first flat base is provided with a stereotactic screw hole, the second flat base is provided with a fixing screw hole, and the side wall surface top end portion is provided. , Having a chamfered inclined surface,
The lower chip is provided with a shaft hole, is coupled to the first flat base of the main body, the positioning hole of the shaft hole and the first flat base are opposed,
The triaxial hole bolt is provided with a thread at the bottom, a convex edge is provided at a position near the top end, and a stereotactic axis is extended on the top surface of the convex edge. The bottom of the shaft hole bolt penetrates the shaft hole of the lower chip and is fastened to the localization screw hole of the first flat base of the main body, whereby the lower chip is localized,
The tool tip is provided with a localization hole, and the tool tip is located in the localization axis of the triaxial hole bolt, and the tool tip is positioned,
The inclined surface pressure piece is provided with a hole, the front side portion is formed by extending the orientation piece and the rear side portion has an inclined surface, the hole of the inclined surface pressure piece, The fixing screw hole of the second flat base is opposed to the second flat base, and the inclined surface of the rear side of the inclined surface pressure piece is pressed by the chamfered inclined surface of the second flat base before fastening. In order to move, the front side wall strongly presses against the wall surface of the bite chip, and the localization piece on the top surface is configured to press the top surface of the bite chip,
The fixing screw penetrates the hole of the inclined surface pressure piece and is fixed to the fixing screw hole of the second flat base to localize the inclined surface pressure piece,
An improved structure of a tool holder, wherein the tool holder is constituted by the aforementioned members. The improvement of the tool holder according to claim 1, wherein the shape of the flat base and the lower chip is opposite to the shape of the tool bit. The improvement of the tool holder according to claim 1, wherein the lower tip, the bite tip, and the inclined surface pressure piece are all tightly fixed to the wall of the main body. The said triaxial hole bolt fixes a bite tip by the principle of leverage, transfers the force which a bite tip receives, and raises the stability of cutting and the intensity | strength with respect to a received force, The claim 1 characterized by the above-mentioned. Improvement of the tool holder structure.

Images