KR20140049264A - Cutting insert compatible toolholder - Google Patents

Cutting insert compatible toolholder Download PDF

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Publication number
KR20140049264A
KR20140049264A KR1020120115308A KR20120115308A KR20140049264A KR 20140049264 A KR20140049264 A KR 20140049264A KR 1020120115308 A KR1020120115308 A KR 1020120115308A KR 20120115308 A KR20120115308 A KR 20120115308A KR 20140049264 A KR20140049264 A KR 20140049264A
Authority
KR
South Korea
Prior art keywords
insert
tool holder
cutting insert
inclined surface
mounting portion
Prior art date
Application number
KR1020120115308A
Other languages
Korean (ko)
Inventor
이재홍
Original Assignee
(주)코리아툴링
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)코리아툴링 filed Critical (주)코리아툴링
Priority to KR1020120115308A priority Critical patent/KR20140049264A/en
Publication of KR20140049264A publication Critical patent/KR20140049264A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/148—Composition of the cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts

Abstract

The present invention relates to a tool holder compatible with inserts. In the tool holder according to the present invention, cutting inserts with various assembly angles can be mounted and used in common so that the tool holder can be used in common and the applicability of the tool holder is improved. The present invention also prevents a failure in mounting the insert which is not suitable for the tool holder and prevents the degradation of processing accuracy so that the present invention can reduce the failure of a product which is cut.

Description

Common insert holders for cutting inserts {cutting insert compatible toolholder}

The present invention relates to a tool holder that can be used in common by mounting a cutting insert having a variety of assembly angles.

The cutting tool used for mechanical cutting in direct processing and mold shape processing for making various industrial parts is used by assembling the cemented carbide and high-seat inserts of the cutting edges on the base.

However, since the assembling angle of the insert assembly blade is different according to the manufacturer or the manufacturing method, it is necessary to have a base (body) corresponding to each insert, thereby increasing the cost and inconvenient in terms of management.

In addition, since the assembly angles of the inserts are not easily distinguished by the naked eye, there is a problem in that the processing accuracy is lowered when the inserts are mounted on an unmatched base.

The prior art of the tool holder is Korea Patent Publication No. 10-2011-0034590.

The present invention has been made to solve the above problems of the prior art, the object of the tool holder according to the present invention is to provide a tool holder that can be used by commonly used cutting inserts having various assembly angles.

The object of the present invention includes an insert mounting portion having a bottom surface and a side mounting portion formed with a coupling hole for mounting the insert and an axial coupling portion coupled to the rotary shaft of the processing machine, the side mounting portion in the lateral direction of the bottom surface The first inclined surface and the second inclined surface having different inclination angles are sequentially formed in the vertical direction, the first inclined surface or the second inclined surface in close contact with the contact surface formed in the side of the insert Is achieved.

In order to achieve the above object, the height from the bottom surface to the boundary point of the first inclined surface and the second inclined surface is preferably formed equal to the height of the intersection point of the contact surfaces of the inserts to be mounted to the insert mounting portion. .

In addition, in order to achieve the above object, it is preferable that the fixing clamp for pressing and pressing the insert to be mounted to the insert mounting portion to the outside of the insert mounting portion is preferably formed.

According to the tool holder according to the present invention, since cutting inserts having various assembly angles can be commonly used to be used, the tool holder can be used in common, and thus the tool holder has a high utilization of the tool holder.

In addition, mounting errors for inserting inserts that do not fit the tool holder are prevented, so that the machining precision can be reduced, thereby reducing the defects of the products to be cut.

In addition, separate management such as matching and storing the corresponding tool holders for each insert is unnecessary, which facilitates the user's management of the inserts and tool holders, and eliminates the need for a different tool holder for each insert. Can be reduced.

In addition, since the fixing clamp further presses and fixes one side of the cutting insert, lifting and rotation of the cutting insert are prevented, thereby improving machining precision.

1 is a perspective view of a tool holder according to a preferred embodiment of the present invention.
2 is a partial plan view showing a portion in which a cutting insert of a tool holder according to an exemplary embodiment of the present invention is mounted.
Figure 3 is a partial perspective view showing the direction in which the insert is mounted to the insert mounting portion of the tool holder according to an embodiment of the present invention.
4 is a bottom perspective view and a top perspective view of an insert mounted to a tool holder according to a preferred embodiment of the present invention.
5 is a view comparing assembly angles of inserts having different assembly angles mounted on a tool holder according to an exemplary embodiment of the present invention.
6 is a cross-sectional view of the close contact surface of the insert mounting portion of the tool holder according to an embodiment of the present invention.
FIG. 7 is a view comparing inserts having different assembly angles with insert inserts of a tool holder according to an exemplary embodiment of the present disclosure, based on a cross section. FIG.
8 is a view illustrating a state in which an insert fixed to an insert mounting portion of a tool holder according to an exemplary embodiment of the present invention is fixed by a fixing clamp.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration of the tool holder capable of common use of the cutting insert according to an embodiment of the present invention.

1 is a perspective view of a tool holder according to a preferred embodiment of the present invention, FIG. 2 is a partial plan view showing a portion in which a cutting insert of a tool holder is mounted according to a preferred embodiment of the present invention, and FIG. Part is a perspective view showing the insert mounting direction of the insert mounting portion of the tool holder according to a preferred embodiment, Figure 4 is a bottom perspective view and a top perspective view of the insert mounted to the tool holder according to a preferred embodiment of the present invention, Figure 5 Is a view comparing the assembly angles of the inserts having different assembly angles mounted on the tool holder according to the preferred embodiment of the present invention, Figure 6 is a close contact of the insert mounting portion of the tool holder according to the preferred embodiment of the present invention 7 is a cross-sectional view, and FIG. 7 illustrates inserts having different assembly angles from insert inserting portions of a tool holder according to an exemplary embodiment of the present invention. It is a view of a mounted state based on a comparison of the cross-section.

As shown in Figures 1 to 4, the tool holder 1 according to a preferred embodiment of the present invention is an insert mounting portion is mounted to the shaft coupling portion 2 and the cutting insert 40 coupled to the rotating shaft of the processing machine ( 10), a fixing bolt 20 for fixing the cutting insert 40 and a fixing clamp 30 for fixing one side of the cutting insert 40 is configured.

The shaft coupling portion 2 is a portion in which the rotating shaft of the processing machine is coupled to rotate the tool holder 1 and has a penetrated shape for engaging with the rotating shaft.

Insert mounting portion 10 is a cutting insert 40 is a mounting portion is largely composed of the bottom surface 11, the side seating portion 15 and the fixing bolt (20).

The bottom surface 11 is a surface in which the bottom surface of the cutting insert 40 is in contact with the bottom surface 11 is a coupling hole to which the fixing bolt 20 for fixing the cutting insert 40 is coupled to the center of the bottom surface 11 ( 12) is formed.

The side seating portion 15 has a vertical surface 16 perpendicular to the bottom surface 11 and a first inclined surface 17 formed above the vertical surface 16 and a second inclined surface 18 formed above the first inclined surface 17. It is composed of

The vertical surface 16 is not intended to be in contact with the cutting insert 40, and thus a clearance is formed between the cutting insert 40 even when the cutting insert 40 is mounted.

The first inclined surface 17 is a surface formed at an angle of about 11 degrees (11 °) with a normal of the bottom surface 11 and is in close contact with the cutting insert 40 having an assembly angle of about 11 degrees.

The second inclined surface 18 is a surface formed at an angle of approximately 15 degrees (15 degrees) with a normal of the bottom surface 11 and is a surface for closely contacting the cutting insert 40 having an assembly angle of approximately 15 degrees.

The clearance grooves 19 formed in the side seating portions 15 are formed to facilitate the penetration of cutting oil for cooling the cutting insert 40.

Fixing clamp 30 is for pressing the one side of the upper surface of the cutting insert 40 mounted adjacent to the insert mounting portion 10 to further secure the cutting insert 40, pressing projection ( 32 is formed of a pressing portion 31 and a pressing bolt 35 for penetrating the pressing portion 31 in the axial direction to press the pressing portion 31. The pressure bolt 35 is screwed into the coupling hole formed in the tool holder (1) to raise or lower the pressure portion (31).

As shown in FIG. 4, the cutting insert 40 has a cutting edge 41 formed in a circular shape at the top thereof, and a plurality of contact surfaces 43 inclined at the same angle are formed at the side thereof, and a fixing bolt in the center thereof. Through holes 45 to which the 20 is coupled are formed.

The contact surface 43 is a part in close contact with the first inclined surface 17 or the second inclined surface 18 of the insert mounting portion 10 of the tool holder 1.

As shown in FIG. 5, the inclination angle of the contact surface 43 of the cutting insert 40 may be differently formed for each cutting insert 40, and the most used one is 11 degrees and 15 degrees. A cutting insert 40 having an inclination angle of 11 degrees of intimate contact surface 43 is referred to as a first cutting insert 40a, and a cutting insert 40 having an inclination angle of 15 degrees inclination of the contact surface 43 as a second cutting insert 40b. Shall be. Therefore, when the first cutting insert 40a and the second cutting insert 40b overlap, the intersection point P of the contact surfaces 43 exists. The height from the bottom of the cutting insert 40 to the intersection point P is h.

As shown in FIG. 6, the point where the first inclined surface 17 and the second inclined surface 18 of the side seating portion 15 of the insert mounting portion 10 are separated is the bottom surface 11 of the insert mounting portion 10. The height from is h. That is, the point where the first inclined surface 17 and the second inclined surface 18 are divided is the intersection point P of the contact surfaces 43b of the first cutting insert 40a and the second cutting insert 40b shown in FIG. 5. ) Corresponds to

As shown in FIG. 7, when the first cutting insert 40a having the inclined angle of the close contact surface 43 is 11 degrees, the fixing bolt 20 is tightened and fixed to the insert mounting portion 10 of the tool holder 1 to thereby cut the first cutting insert 40a. The contact surface 43a of the insert 40a is in close contact with the first inclined surface 17 of the side seating portions 15 of the insert mounting portion 10.

In addition, when the fixing bolt 20 is fixed to the insert mounting portion 10 of the tool holder 1 by fixing the second cutting insert 40b having the inclination angle of the contact surface 43 to 15 degrees, the contact surface of the second cutting insert 40b is fixed. 43b comes into close contact with the second inclined surface 18 of the side seating portions 15 of the insert mounting portion 10.

Hereinafter will be described the operation and effect of the tool holder that can be used in common of the cutting insert 40 according to the preferred embodiment of the present invention.

5 is a view comparing the assembly angles of the inserts having different assembly angles mounted on the tool holder according to the preferred embodiment of the present invention, Figure 6 is a close contact of the insert mounting portion of the tool holder according to the preferred embodiment of the present invention 7 is a view illustrating a cross section of a surface, and FIG. 7 is a view comparing inserts having different assembly angles with insert inserting portions of a tool holder according to an exemplary embodiment of the present disclosure, and FIG. FIG. Is a view illustrating a state in which an insert fixed to an insert mounting portion of a tool holder according to an exemplary embodiment of the present invention is fixed by a fixing clamp.

As shown in FIG. 5, the inclination angles of the contact surface 43 that are typically used in the cutting insert 40 are 11 ° and 15 °. However, since 11 ° and 15 ° are minute differences, it is difficult for the human eye to accurately distinguish the difference in the inclination angle of the contact surface 43 of the cutting insert 40. Similarly, unless a mark is displayed on the tool holder 1, it is difficult for the human eye to distinguish the degree of cutting insert mounting of the specific tool holder 1.

Therefore, the tool holder 1 and the cutting insert 40 may be used to assemble those in which the inclination angles are different from each other by mistake. In this case, the surface contact between the contact surface of the cutting insert 40 and the tool holder 1 is used. (Or line contact) does not occur, so the fixing of the cutting insert 40 becomes unstable. As a result, vibration and tremor occur in the cutting insert 40 at the time of machining, and as a result, machining precision falls.

However, as shown in FIGS. 6 and 7, in the tool holder 1 according to the present invention, the side seating portion 15 of the cutting insert mounting portion 10 has the contact surfaces 43a of the cutting inserts 40a and 40b. Since the first inclined plane 17 and the second inclined plane 18 are divided at the height of the intersection point P of the second point 43b), even when the cutting inserts 40a and 40b having different inclination angles are mounted, It was brought into close contact with the first inclined surface 17 or the second inclined surface 18 so as to generate an interview contact force (or a pre-ground force).

That is, when the first cutting insert 40a having an inclination angle of 11 ° against the tool holder 1 is fixed by tightening the fixing bolt 20, the contact surface 43a of the first cutting insert 40a is inserted into the tool holder 1. The second inclined insert 40b having the inclined angle of the contact surface 43b of 15 ° is fixed to the first inclined surface 17 among the side mounting portions 15 of the mounting portion 10 and fixed to the same tool holder 1. When the bolt 20 is tightened and fixed, the contact surface 43b of the second cutting insert 40b comes into close contact with the second inclined surface 18 of the side seating portions 15 of the insert mounting portion 10.

Therefore, even when the cutting inserts 40a and 40b having different inclination angles are mounted, the close contact surfaces 43a and 43b of the cutting inserts 40a and 40b are formed on the first inclined surface 17 or the second inclined surface 18 of the tool holder 1. The cutting inserts 40a and 40b are stably and firmly fixed because they are brought into close contact with each other to generate the surface contact force (or pre-ground force).

At this time, the height of the boundary point between the first inclined surface 17 and the second inclined surface 18 is equal to the height of the intersection point P of the contact surfaces 43a and 43b of the two cutting inserts 40a and 40b. The reason for the formation is that the height of the boundary point between the first inclined surface 17 and the second inclined surface 18 is equal to the height of the intersection point P of the contact surfaces 43a and 43b of the two cutting inserts 40a and 40b. If there is a mismatch, one of the two cutting inserts 40a and 40b cannot be in close contact with the side seating portion 15.

As a result, even if the tool holder 1 according to the present invention mounts the cutting inserts 40a and 40b having different inclination angles without distinction, the first inclined surface (1) of the bottom surface 11 and the side seating portion 15 of the insert mounting portion 10 17) or through the second inclined surface 18 to generate the surface contact force (or pre-ground force) to the cutting insert 40 reliably, it is possible to ensure a stable and secure fixing of the cutting insert (40).

In addition, as shown in FIG. 8, the tool holder 1 according to the present invention has a fixing clamp 30 formed adjacent to the insert mounting portion 10, and the cutting insert 40 bolted to the insert mounting portion 10. By pressing and pressing on one side of the cutting insert 40, the rotation of the cutting insert 40 can be more reliably prevented, and the lifting of the cutting insert 40 can be more reliably prevented from occurring in the opposite direction under load. Therefore, the fall of processing precision is prevented.

Since the cutting insert 40 is loaded on one side, the opposite side of the load receiving point may be lifted from the tool holder 1 or vibration may be caused by the lifting. The tool holder 1 of the present invention may have a clamp for fixing. Since 30 presses and pushes the opposite side of the load, it prevents lifting or vibration.

In addition, since the cutting insert 40 has a circular shape, the cutting insert 40 can be moved in the circumferential direction finely during machining. The tool holder 1 of the present invention fixes a point away from the center of the cutting insert 40. Since the clamp 30 is pressed and pressed, the circumferential movement of the cutting insert 40 can be prevented, thereby improving the machining precision.

In the preferred embodiment of the present invention, the vertical surface 16, the first inclined surface 17, and the second inclined surface 18 of the side seating portion 15 are formed in a circular curved surface so that the contact surface 43 of the cutting insert 40 is formed. Although it is precisely in line contact with the present invention, the present invention is not limited to this, and the feature of the present invention is that the side mounting portion of the tool holder is composed of inclined surfaces having two different angles. It is also within the scope of the present invention to form the first inclined surface and the second inclined surface of the side seating portion into a plurality of connected planes having a predetermined angle between adjacent surfaces so as to correspond to the shape. In this case, the close contact surface of the cutting insert and the first inclined surface or the second inclined surface of the side mounting portion can achieve perfect contact.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And additions should be considered as falling within the scope of the claims of the present invention.

1 Tool holder, biaxial coupling part, 10 cutting insert mounting part, 11 bottom surface, 17 first inclined surface, 18 second inclined surface, 20 fixing bolt, 30 fixing clamp

Claims (3)

A shaft coupling portion coupled to a rotating shaft of the processing machine; And
Including an insert mounting portion having a bottom surface and a side seat is formed with a coupling hole for mounting the insert,
The side seating portion is formed with a first inclined surface and a second inclined surface having different inclination angles in the lateral direction of the bottom surface in the vertical direction, the first inclined surface or the second inclined surface is in close contact with the insert side Tool holder characterized in close contact with the surface. The method of claim 1,
And a height from the bottom surface to a boundary point between the first sloped surface and the second sloped surface is equal to the height of the intersection point of the contact surfaces of the inserts to be mounted to the insert mounting portion. The method of claim 1,
Tool holder, characterized in that the fixing clamp for pressing and pressing the insert to be mounted to the insert mounting portion to the outside of the insert mounting portion.
KR1020120115308A 2012-10-17 2012-10-17 Cutting insert compatible toolholder KR20140049264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120115308A KR20140049264A (en) 2012-10-17 2012-10-17 Cutting insert compatible toolholder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120115308A KR20140049264A (en) 2012-10-17 2012-10-17 Cutting insert compatible toolholder

Publications (1)

Publication Number Publication Date
KR20140049264A true KR20140049264A (en) 2014-04-25

Family

ID=50654914

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120115308A KR20140049264A (en) 2012-10-17 2012-10-17 Cutting insert compatible toolholder

Country Status (1)

Country Link
KR (1) KR20140049264A (en)

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