TWI667097B - End water outlet clamp - Google Patents

Abstract

An end water outlet collet set includes a collet body and a cutter, wherein the collet body is provided with a cutter clip hole, a plurality of outer slits, a plurality of inner slits, and a plurality of water outlets, wherein each outer slit and Each of the inner slots is alternately arranged, and each water outlet is disposed in the collet body and annularly surrounds the cutter hole, and one end of each water outlet communicates with an inner slit, and the other end forms an opening at the outer end surface, and the openings The water outlet is inclined to face the outer end surface; the cutter is installed in the cutter hole of the collet body. When the invention is used, the cooling water can flow into the water outlet through the inner slit, and the cooling water is guided to the processing end of the cutter by the water outlet, so that the cutter obtains a good cooling effect.

Description

End water outlet clamp

The present invention relates to a tool holding tool for a processing machine, and more particularly to a collet set for cooling a tool by a water outlet provided in an end face of the collet.

The collet is a part for tightening the cutter. By providing a plurality of slots on the collet body, the collet body is deformed radially in a large direction, thereby having a better clamping effect.

The existing tools can be divided into two types, one is a tool with a flow path, and the central water outlet system of the processing machine can be used to make the cooling water flow directly through the flow path of the tool to achieve the effect of cooling the tool; the other is not For tools with runners, it is usually necessary to use another cooling device to cool the tool. If the central water outlet system of the processing machine is used directly to cool the tool, the cooling water cannot enter the tool and concentrate on the mounting end of the tool, which cannot be effective. The machining end of the cooling tool is not ideal; therefore, how to obtain a good cooling effect when the tool without the flow path is installed in a processing machine having a central water discharge system is an important improvement problem.

In view of the above, the main object of the present invention is to provide an end water outlet collet, which allows the cooling water to be guided by the water outlet of the collet to the machining end of the cutter to cool the cutter by the water outlet provided in the collet.

In order to achieve the above object, an end water outlet collet of the present invention includes an end water discharge collet set including a collet body and a cutter; wherein the collet body includes an outer end a surface, an inner end surface, a groove, a cutter hole, a plurality of outer slits, a plurality of inner slits, and a plurality of water outlets; the outer end surface and the inner end surface are respectively located at opposite ends of the collet body The groove is annularly disposed near the outer end surface of the outer portion of the collet; the cutter hole is disposed at an axial center of the collet body; and the outer slits are circumferentially arranged around the cutter hole The collet body extends from the outer end surface toward the inner end surface, and the outer slits have an axial length shorter than the length of the collet body; the inner slits are spaced apart between the outer slits and are The inner end surface extends toward the outer end surface, and the axial length of each inner slit is shorter than the inner end surface to the groove, and the groove width of each inner slit is larger than the groove width of each outer slit, the collet Each of the inner slits and the outer slits of the main body have axially overlapping sections on the cutter pin hole side; the water outlets are disposed in the collet body, and are arranged around the cutter clip hole and are arranged at an annular interval. And the inclined arrangement is arranged toward the outer end surface, and the hole axes of the water outlets of the collet body are The axis of the clip body forms an angle greater than 0 degrees and less than or equal to 12 degrees at the intersection, each end of the water outlet communicates with an inner slit, and the other end forms an opening at the outer end surface; the cutter has a processing end and a mounting end, And extending at an outer end surface of the collet body with the mounting end mounted in the clamp hole of the collet body, and the distance from the machining end of the cutter to the outer end surface of the collet body is equal to the outer diameter of the cutter Four times the size.

According to the above technical method, when the cooling water is injected from the rear end of the collet body, the cooling water flows into the water outlet from the inner cut groove, and the cooling water is guided to the inclined position by the concentrated discharge of the water outlet toward the outer end side. The hot position of the tool during machining, so that the tool can obtain good cooling effect; the distance from the machining end of the tool to the outer end surface of the collet body is equal to four times the outer diameter of the tool, so that the collet body clamping tool is processed. The clamping force and stability at the time, as well as the cutting efficiency and machining accuracy at the time of tool machining, reach the optimum balance point, and can have the best cutting effect.

10,10A‧‧‧ collet body

11,11A‧‧‧Outer end face

12‧‧‧ inner end face

13,13A‧‧ ‧ Groove

14,14A‧‧‧Tool hole

15,15A‧‧‧ outside slot

16,16A‧‧‧cutting

17,17A‧‧‧Waterway

20‧‧‧Tools

30‧‧‧Tool holder

31‧‧‧Cone groove

40‧‧‧ Nuts

X‧‧‧Axis

A‧‧‧ hole axis

Θ‧‧‧ angle

M‧‧ ‧ overlapping sections

D‧‧‧OD

L‧‧‧ distance

C‧‧‧ slot width

E‧‧‧ slot width

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of a collet body of the present invention.

2 is another perspective view of a preferred embodiment of the collet body of the present invention.

Figure 3 is a cross-sectional side view of a preferred embodiment of the present invention.

Figure 4 is another cross-sectional side view of a preferred embodiment of the present invention.

Figure 5 is an end elevational view of a preferred embodiment of the collet body of the present invention.

Figure 6 is a side cross-sectional view of the preferred embodiment of the present invention mounted in a tool holder.

Figure 7 is a side elevational cross-sectional view showing the state of use of the preferred embodiment of the present invention in a tool holder.

Figure 8 is a perspective, cross-sectional view showing another preferred embodiment of the collet body of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following is further illustrated in the preferred embodiment as illustrated in the following: the present invention is an end water outlet collet set Please refer to FIG. 1 to FIG. 5 , which includes a collet body 10 and a cutter 20 .

The collet body 10 is formed in a cylindrical shape, and an outer end surface 11 and an inner end surface 12 are respectively formed at two ends, and an annular groove 13 is recessed in the outer periphery near the outer end surface 11. The collet body 10 forms the The outer diameter of the groove 13 is larger than the outer diameter of the outer end surface 11 and the outer diameter of the inner end surface 12 to form a tapered shape that is converged toward both end faces; the collet body 10 is provided with a cutter at the axis X position. The pinhole 14 forms an opening in the outer end surface 11 and the inner end surface 12.

The collet body 10 is provided with eight mutually equally spaced outer slits 15 around the outer end surface 11 in the direction of the inner end surface 12 around the cutter clip hole 14. The outer slits 15 are axially disposed on the outer end surface 11 and the cylinder. The outer peripheral surface of the clip body 10 forms an opening and communicates with the cutter clip hole 14. The axial length of each outer slit 15 is shorter than the length of the collet body 10, and the axial extension length of each outer slit 15 on the outer side. An axially extending length greater than the side of the tool holder hole 14; the collet body 10 is provided with eight mutually spaced inner slits 16 around the cutter hole 14 in the direction of the inner end surface 12 toward the outer end surface 11, each inner slit 16 series axially disposed on the inner end face 12 And the outer peripheral surface of the collet body 10 forms an opening to communicate with the cutter hole 14 , and the axial length of each of the inner slits 16 is shorter than the distance between the inner end surface 12 and the recess 13 , and each inner slit 16 and each The outer slits 15 are spaced apart from each other, and the groove width C of each of the inner slits 16 is larger than the groove width E of each of the outer slits 15, and each of the outer slits 15 and the inner slits 16 has an axial intersection on the cutter pin hole 14 side. Stacked section M.

The collet body 10 is provided with four water outlets 17 arranged around the tool holder hole 14 at an annular interval. The hole axis A of each water channel 17 and the axis X of the collet body 10 correspond to the outer end surface. One side of the intersecting portion 11 is disposed obliquely toward the outer end surface 11 side, and the hole axis A of each of the water outlets 17 and the axis X of the tool holder hole form an angle θ greater than 0 degrees and less than or equal to 12 degrees. One end of each water outlet 17 communicates with an inner slit 16 and the other end forms an opening at the outer end surface 11 of the collet body 10.

The cutter 20 is a cutter 20 having no cooling water flow passage, and has a mounting end and a machining end, and is mounted on the cutter hole 14 of the collet body 10 at an installation end to protrude from the cylinder The outer end surface 11 of the body 10 is clamped, and the distance L from the machined end of the cutter 20 to the outer end surface 11 of the collet body 10 is equal to four times the outer diameter D of the cutter 20.

In addition to the preferred embodiment described above, the number of the outer slits 15, the inner slits 16 and the water outlets 17 of the present invention may be six as shown in FIG. 8 and six outer slits 15A and six inner slits 16A. Three outlets 17A, or other number of settings.

When the present invention is installed in the tool holder 30, with reference to FIG. 6, the end of the inner end surface 12 of the collet body 10 is plugged into the tapered groove 31 of the tool holder 30, and the inner circumference of the inner circumference of the nut 40 is used. After being fitted into the groove 13 of the collet body 10, the nut 40 is locked into the tool holder 30, and the cutter 20 is inserted into the tool holder hole 14, and then the nut 40 is screwed to the tool holder 30, The clamping of the nut 40 and the tapered groove 31 of the tool holder 30 is tight, and the design of the outer cutting groove 15 and the inner cutting groove 16 can be closed, so that the tool clamping hole 14 can surely tighten the tool 20 to position it; Since the groove width C of each of the inner slits 16 is larger than the groove width E of each of the outer slits 15, the collet body 10 has a large elastic deformation amount at the inner end, and each of the outer slits 15 and the inner slits 16 are at the cutter The side of the clamping hole 14 has an axially overlapping section M, and the clamping force at the time of converging can be improved; and the cutter 20 The distance L from the machining end to the collet body 10 is equal to four times the outer diameter D of the cutter 20, so that the clamping force and clamping stability of the collet body 10 when the cutter 20 is clamped, and the tool 20 are processed. The cutting efficiency and machining accuracy reach the best balance point, and the best cutting effect can be achieved.

When the cooling water is injected into the tool holder 30, referring to FIG. 7, the cooling water flows from the inner end surface 12 of the collet body 10 into the tool holder hole 14 of the collet body 10 and the inner slits 16 due to the inner slits. The opening formed in the outer peripheral surface of the tool holder 10 is closed by the tapered groove 31 of the tool holder 30, and the tool holder hole 14 is blocked by the cutter 20, and the cooling water is led to the respective ends of the respective inner slits 16. The water passage 17 flows out from the opening of the outer end surface 11 of the cutter cylinder 10, and because the water outlets 17 are disposed obliquely toward the outer end surface 11 side of the collet body 10, the cooling water can be guided and concentrated. The heat generated during the machining of the cutter 20 gives the cutter 20 a good cooling effect.

Since the distance L from the machining end of the cutter 20 to the outer end surface 11 of the collet body 10 is four times the outer diameter D of the cutter 20, the distance L between the machining end of the cutter 20 and the outer end surface 11 of the collet body 10 is The size varies depending on the outer diameter D of the tool, and in order to guide and concentrate the cooling water at the heat generating position during the processing of the tool 20, the angle θ formed between the axis A of each of the water outlets 17 and the axis X of the collet body 10 is Corresponding to the distance L from the machining end of the cutter 20 to the outer end surface 11 of the collet body 10, the smaller the outer diameter D of the cutter 20 is installed, the smaller the angle θ formed between the bore axis A and the axial center X is. And the preferred angle value of the angle θ formed between the hole axis A and the axis X falls within a range of more than 0 degrees and less than or equal to 12 degrees, so that the cutter 20 obtains a good cooling effect; and because the outer slits 15 are inside The axial extension length is smaller than the axial extension length of the outer side. Therefore, the cutter 20 can be used to close the opening of each outer slit 15 on the cutter hole 40 side, so that the cooling water is not branched to the outer slit 15 and the cooling is allowed. The water can flow more concentratedly to each of the water outlets 17 to increase the cooling efficiency.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent reality of local changes or modifications made by the disclosed technical contents The embodiments, without departing from the technical scope of the present invention, are still within the scope of the technical features of the present invention.

Claims (4)

An end water outlet collet assembly comprising a collet body and a cutter; wherein the collet body comprises an outer end surface, an inner end surface, a concave groove, a cutter clamping hole, a plurality of outer cutting grooves, and a plurality of inner portions a grooving groove and a plurality of water outlets; the outer end surface and the inner end surface are respectively located at opposite ends of the collet body, and the groove is annularly disposed at an outer peripheral end of the collet body; the cutter hole is penetrated Positioning at an axial center of the collet body; the outer slits are circumferentially arranged around the cutter clip hole and disposed on the collet body, and extend from the outer end surface toward the inner end surface, and each outer slit has a short axial length The length of the collet body; the inner slits are spaced apart between the outer slits, and extend from the inner end surface toward the outer end surface, and the axial length of each inner slit is shorter than the inner end surface to the The distance between the grooves, and the groove width of each of the inner slits is larger than the groove width of each of the outer slits, and the inner slits and the outer slits of the collet body have axially overlapping sections on the side of the cutter clip hole. The water outlets are disposed in the collet body, surrounding the cutter hole and presenting Arranging at an interval, which is inclined toward the outer end surface, and the hole axes of the water outlets of the collet body are intersected with the axis of the collet body to form an angle greater than 0 degrees and less than or equal to 12 degrees. One end of the water passage communicates with an inner slit, and the other end forms an opening at the outer end surface; the cutter has a processing end and a mounting end, and the mounting end is mounted in the clamp hole of the collet body to protrude The outer end surface of the collet body, and the distance from the machined end of the cutter to the outer end surface of the collet body is equal to four times the outer diameter of the cutter. The end face water discharge cartridge set according to claim 1, wherein an axial extension length of each of the outer slits on the outer side is greater than an axial extension length of each outer slit on the cutter clip hole side. The end face water discharge cartridge set according to claim 1 or 2, wherein the collet body comprises six outer slits, six inner slits and three water outlets. The end face water discharge cartridge set according to claim 1 or 2, wherein the collet body comprises eight outer slits, eight inner slits and four water outlets.