KR20120044639A - Tool holder - Google Patents

Tool holder Download PDF

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Publication number
KR20120044639A
KR20120044639A KR1020100106038A KR20100106038A KR20120044639A KR 20120044639 A KR20120044639 A KR 20120044639A KR 1020100106038 A KR1020100106038 A KR 1020100106038A KR 20100106038 A KR20100106038 A KR 20100106038A KR 20120044639 A KR20120044639 A KR 20120044639A
Authority
KR
South Korea
Prior art keywords
tool
collar
unit
support
shank
Prior art date
Application number
KR1020100106038A
Other languages
Korean (ko)
Inventor
송경도
오상록
Original Assignee
주식회사아일
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 주식회사아일 filed Critical 주식회사아일
Priority to KR1020100106038A priority Critical patent/KR20120044639A/en
Publication of KR20120044639A publication Critical patent/KR20120044639A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/12—Special arrangements on tool holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2220/00—Machine tool components
    • B23Q2220/006—Spindle heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2716/00—Equipment for precise positioning of tool or work into particular locations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

PURPOSE: A tool supporting unit is provided to enlarge range of a machining error because the tool supporting unit is connected with a spindle shaft by elasticity of a spring. CONSTITUTION: A tool supporting unit comprises a support body(110), a collar unit(120), a spring(130), and a fixing ring(140). The support body comprises a shank unit(112), a tool connecting unit(114), a flange(116), and a groove unit(118). The outer circumference of the shank unit is coupled to a tapered hole of a spindle shaft. The flange is formed between the shank part and the tool connecting unit. The groove unit is formed in the outer circumference of the front end of the shank unit. The collar unit is slidingly coupled to the shank unit in an axial direction. The spring applies elasticity to one end of the support body with respect to the collar unit. The fixing ring is inserted in the groove unit and prevents separation of the collar unit.

Description

Tool holder

The present invention relates to a tool support, and more particularly, to a tool support for fixing a tool such as a drill to a spindle shaft of a machine tool such as a machining center.

Most spindle shafts, such as machining centers, are formed with tapered holes, and the tool is held on the spindle shaft by engaging a tool support tool for mounting the tool. On the mounting side of the tool support, there is a shank that fits into the tapered hole and a collar that comes into contact with the tip end surface of the spindle shaft. It may not be possible, and the bearing capacity may fall.

Therefore, it is necessary to improve the holding force of the tool support fixed to the spindle shaft.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a tool support that allows the collar portion of the tip of the tool support to be brought into contact with and supported by the front end face of the spindle shaft by an elastic force of the spring.

In addition, an object of the present invention is to provide a tool support that is connected to the spindle shaft by the elastic force of the spring to increase the machining error range of the tool support.

In addition, an object of the present invention is to provide a tool support that can maintain the tool support by replacement of the collar portion when the collar portion connected to the spindle shaft is worn.

The present invention, one end is formed with a shank portion having an outer circumferential surface engaging with the tapered hole formed in the spindle shaft, the other end is formed with a tool connecting portion for holding and holding the tool and a flange is formed between the shank portion and the tool connecting portion A supporter body having a groove portion formed on a tip outer peripheral portion of the shank portion; A collar portion slidably coupled to the shank side in an axial direction; Elastic means for applying an elastic force to one end of the supporter body with respect to the collar portion; And a fixing ring inserted into the groove part and preventing separation of the collar part. It provides a tool support comprising a.

The collar portion is formed in a cylindrical shape, the outer circumferential surface is formed to be tapered, the end portion having a small outer circumference diameter may be disposed to one end side of the support body.

The collar portion is formed in a hexahedral shape, and the height is formed to be lower as it proceeds from one end to the other end, the lower portion of the collar portion may be disposed to the proximal side of the support body.

The collar portion may be disposed parallel to the central axis of the support body.

The collar may be replaceably coupled.

The fixing ring may be exposed to the outside of the groove when positioned in the groove.

The present invention as described above has the effect that the collar portion of the tip of the tool support is in contact with the front end surface of the spindle shaft by the spring force of the spring.

In addition, the present invention is connected to the spindle shaft by the elastic force of the spring has the effect of expanding the processing error range of the tool support.

In addition, the present invention has the effect of maintaining the tool support by replacement of the collar portion when the collar portion connected to the spindle shaft is worn.

1 is a cross-sectional view showing the configuration of a tool support according to an embodiment of the present invention.
2 is a cross-sectional view showing a state of use of the tool support according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the configuration of a tool support according to an embodiment of the present invention.

Referring to FIG. 1, the tool support 100 according to an embodiment of the present invention includes a support body 110, a collar 120, a spring 130, and a fixing ring 140.

Support body 110 is formed in the shape of a circular rod having a predetermined length and diameter. The support body 110 has one end connected to a spindle shaft of the machine tool. To this end, a shank 112 is formed at one end of the support body 110 to engage with a tapered hole formed in the spindle shaft to be mounted. In addition, the other end of the support body 110 is formed with a tool connecting portion 114 for supporting and fixing the tool.

Side of the tool connecting portion 114 may be formed with the insertion groove of the fixing key 12 to prevent idle rotation of the tool when the tool is supported by the tool support 100 according to the present invention.

The flange 116 is fixedly formed along the outer circumferential surface between the shank portion 112 and the tool connecting portion 114 of the support body 110.

One surface of the flange 116, that is, the surface facing the shank portion 112 of the flange 116 contacts one end of the spring 130 described later.

A collar portion 120 is disposed on an outer circumferential surface of the shank portion 112 side of the supporter body 110.

The collar 120 has a cylindrical shape, and an outer circumferential surface thereof is tapered. At this time, the collar portion 120 is arranged to be slidable on the shank portion 112.

In addition, the collar portion 120 is formed in a rectangular parallelepiped shape, and may be disposed in parallel at regular intervals on the outer circumferential side of the shank portion 112. The collar 120 is disposed parallel to the central axis of the supporter main body 110.

The collar portion 120 is formed to have a lower height as it progresses from one end to the other end, and has a substantially trapezoidal cross-sectional structure.

At this time, one end of the collar portion 120, that is, the high end, is disposed toward the flange 116, and the other end, that is, the low end, is disposed toward the end of the shank portion 112.

A plurality of coil springs 130 are disposed between the collar portion 120 and the flange 116 as elastic means. The coil spring 130 contacts one end of the flange 116 and the other end contacts one end of the collar 120 to apply an elastic force to the collar 120.

A groove portion 118 having a predetermined depth is formed along an end portion of the outer circumferential surface of the shank portion 112, and a fixing ring 140 to be described later is inserted into the groove portion 118. At this time, one side of the fixing ring 140 is exposed to the outside of the groove portion 118 to limit the movement of the collar portion 120.

The present invention configured as described above works as follows.

2 is a cross-sectional view showing a state of use of the tool support according to an embodiment of the present invention.

Referring to FIG. 2, the shank portion 112 of the tool support 100 is inserted into a spindle shaft of a machine tool (not shown), and the tool connecting portion 114 of the tool support 100 is a machining tool 10. Is connected. In the figure, reference numeral 12 is a fixing pin for preventing idling of the tool 10.

Connection of the shank portion 112 and the spindle shaft is made as follows.

The shank portion 112 is inserted into the spindle shaft. At this time, the outer circumferential surface of the collar 120 disposed on the outer circumferential surface of the shank portion 112 is in contact with the inner circumferential surface of the tapered hole of the spindle shaft.

When the tool support 100 is inserted, the collar 120 is pushed backward when it comes in contact with the tapered hole, but the elastic force of the coil spring 130 is applied to the collar 120 so that the collar 120 is pushed. This is avoided. In addition, since the elastic force of the coil spring 130 is applied to the collar portion 120, the collar portion 120 is in close contact with the inner peripheral surface of the tapered hole.

On the other hand, when the tool support 100 is separated from the spindle shaft, the collar portion 120 may be separated by the elastic force of the coil spring 130, the front end of the collar portion 120 to the fixing ring 140 In contact with the movement is limited, the separation of the collar portion 120 is limited.

On the other hand, when the collar portion 120 disposed on the shank portion 112 of the tool support 100 is worn by repeated use and the bearing force is lowered, it is necessary to repair it. In this case, do the following:

The user separates the fixing ring 140 from the tool support 100 using a separate tool. When the fixing to the collar portion 120 is released by the separation of the fixing ring 140, the user replaces the collar portion 120 with a new one, and fixes the fixing ring 140 to the groove portion 118.

According to the present invention configured as described above, the collar portion of the tip of the tool support is supported by contact with the front end face of the spindle shaft by the elastic force of the spring, and is connected to the spindle shaft by the elastic force of the spring, thereby reducing the machining error range of the tool support. It can be extended and applied, and when the collar portion connected to the spindle shaft is worn, the tool support can be maintained by replacing the collar portion.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: tool support
110: support body
120: Calabu
130: spring
140: retaining ring

Claims (6)

One end is formed with a shank portion having an outer circumferential surface engaging with a tapered hole formed in the spindle shaft, the other end is formed with a tool connecting portion for holding and holding a tool, and a flange is formed between the shank portion and the tool connecting portion, A supporter body in which a groove is formed on the outer periphery of the tip;
A collar portion slidably coupled to the shank side in an axial direction;
Elastic means for applying an elastic force to one end of the supporter body with respect to the collar portion; And
A fixing ring inserted into the groove part and preventing separation of the collar part;
Tool support comprising a. The method of claim 1,
The collar portion is formed in a cylindrical shape, the outer peripheral surface is formed to be tapered, the end of the tool support tool having a small outer peripheral diameter is disposed toward one end of the support body. The method of claim 1,
The collar portion is formed in a hexahedral shape and the lower the height is formed as it proceeds from one end to the other end, the tool support is provided that the lower portion is disposed in the base end side of the support body. The method of claim 3,
The collar support tool is disposed parallel to the central axis of the support body. The method of claim 1,
The tool support is coupled to the collar replaceably. The method of claim 1,
The support ring is exposed to the outside of the groove when the fixing ring is located in the groove.
KR1020100106038A 2010-10-28 2010-10-28 Tool holder KR20120044639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100106038A KR20120044639A (en) 2010-10-28 2010-10-28 Tool holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100106038A KR20120044639A (en) 2010-10-28 2010-10-28 Tool holder

Publications (1)

Publication Number Publication Date
KR20120044639A true KR20120044639A (en) 2012-05-08

Family

ID=46264371

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100106038A KR20120044639A (en) 2010-10-28 2010-10-28 Tool holder

Country Status (1)

Country Link
KR (1) KR20120044639A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922329A (en) * 2012-11-08 2013-02-13 无锡新宏泰电器科技股份有限公司 Fast clamping fixture for bearing processing
CN106624005A (en) * 2016-12-23 2017-05-10 燕山大学 High-speed tool holder with corrugated taper sleeve achieving self-compensation centrifugal expansion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922329A (en) * 2012-11-08 2013-02-13 无锡新宏泰电器科技股份有限公司 Fast clamping fixture for bearing processing
CN106624005A (en) * 2016-12-23 2017-05-10 燕山大学 High-speed tool holder with corrugated taper sleeve achieving self-compensation centrifugal expansion

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E902 Notification of reason for refusal
E601 Decision to refuse application