JPH077811U - Milling cutter - Google Patents

Milling cutter

Info

Publication number
JPH077811U
JPH077811U JP3743393U JP3743393U JPH077811U JP H077811 U JPH077811 U JP H077811U JP 3743393 U JP3743393 U JP 3743393U JP 3743393 U JP3743393 U JP 3743393U JP H077811 U JPH077811 U JP H077811U
Authority
JP
Japan
Prior art keywords
cutter
clamp
peripheral
pressing
collar
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP3743393U
Other languages
Japanese (ja)
Inventor
正治 滝口
和孝 田口
Original Assignee
三菱マテリアル株式会社
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 三菱マテリアル株式会社 filed Critical 三菱マテリアル株式会社
Priority to JP3743393U priority Critical patent/JPH077811U/en
Publication of JPH077811U publication Critical patent/JPH077811U/en
Pending legal-status Critical Current

Links

Abstract

(57) [Abstract] [Purpose] To provide a milling cutter capable of easily and quickly performing cutter replacement work and improving workability. [Structure] A pressing member for pressing and fixing the cutters 32, 30 to the cutter body 24 is screwed into a flange member 38 having a pressing portion 39 inserted into the tip side of the cutter body 24 and pressing the cutter, and a tip side of the cutter body 24. And a clamp member 40 that is pressed to the base end side of the cutter body by a bolt 42. A plurality of ridges 48 are rotationally symmetrically formed on the outer peripheral portion of the clamp member 40, and the circumscribed circles of these ridges 48 have the same diameter as or smaller than the mounting holes of the cutters 32 and 30. Further, a hole portion 54 having the same shape as the outer peripheral portion of the clamp member 40 is formed on the inner peripheral portion of the collar member 38.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a milling cutter capable of easily and quickly exchanging the cutter.

[0002]

[Prior art and its problems]

 Conventionally, as an example of a milling cutter, the one shown in FIGS. 6 and 7 has been provided. In these drawings, reference numeral 2 is a cutter body, and a shaft portion 4 and a screw portion 6 having a diameter smaller than that of the shaft portion 4 are formed at a tip end side portion thereof. Substantially disc-shaped cutters 8 and 10 in which mounting holes 9 and 11 are formed in the central portion of the shaft portion 4 are inserted with a cylindrical spacer 12 sandwiched therebetween. Is provided with a plurality of chips (cutting blades) 8a and 10b. The threaded portion 6 is provided with a collar 14 and nuts 16 and 18 that are screwed into the threaded portion 6, and by tightening the nuts 16 and 18, the collar 14 is pressed toward the base end side of the cutter body 2. The cutters 8 and 10 are fixed.

A key groove 20 is formed on the outer peripheral portion of the shaft portion 4, and the cutters 8 and 10 are positioned by a key 22 inserted in the key groove 20. In the conventional milling cutter as described above, when the cutters 8 and 10 are replaced, first, the nuts 18 and 16 must be completely removed from the threaded portion 6 and the collar 14 must be pulled out. Then, after this, it is necessary to remove the cutter 10, the spacer 12 and the cutter 8 from the shaft portion, replace them with other cutters, insert them into the shaft portion 4, and again attach the collar 14 and the nuts 16 and 18. For this reason, the conventional milling cutter has had a problem that it is troublesome and time-consuming to replace the cutter, resulting in poor workability. The present invention is intended to solve the above problems.

[0004]

According to the present invention, a disc-shaped cutter having a cutting edge on the outer peripheral portion and a mounting hole formed in the central portion is inserted into the outer peripheral portion on the tip side of a cutter body, and a pressing member is provided. In a milling cutter that is pressed and fixed to the base end side of the cutter body by means of the pressing member, the pressing member is inserted into the tip side of the cutter body and has a pressing portion for pressing the cutter, and is screwed into the tip side of the cutter body. The clamp member is pressed against the base end side of the cutter body by the bolts, and a plurality of ridges are formed on the outer periphery of the clamp member in a rotationally symmetrical manner, and the ridges of these ridges The diameter of the circle is the same as or smaller than the mounting hole of the cutter, and a hole portion having the same shape as the outer peripheral portion of the clamp member is formed on the inner peripheral portion of the collar member. Is a thing

[0005]

[Action]

 In the milling cutter having the above structure, when the bolt for fixing the clamp member is loosened and the clamp member is rotated by a predetermined angle, the hole portion of the flange member is aligned with the outer peripheral portion of the clamp member, and the flange member is inserted from the hole portion. Are easily removed. Then, in this state, the cutter can be easily replaced. In addition, when fixing the cutter, insert the collar member with its hole aligned with the outer peripheral portion of the clamp member, rotate it by a predetermined angle, and then tighten the bolts to tighten the clamp member and collar. The cutter is pressed and fixed through the member.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 show a milling cutter according to an embodiment of the present invention. In these drawings, reference numeral 24 is a cutter body, and a substantially columnar shaft portion 26 is formed at a tip side portion thereof, and a small shaft portion 28 having a smaller diameter than the shaft portion 26 is provided in the shaft portion 26. It is formed coaxially with. The cutters 30 and 32 are fitted on the outer peripheral portion of the shaft portion 26 via a cylindrical spacer 34. The cutters 30 and 32 are similar to the above-mentioned conventional cutters, and a plurality of chips 30a and 32a are mounted on the outer peripheral portions thereof, and mounting holes 34 and 36 are formed in the central portions thereof. ing.

A substantially disk-shaped brim member 38 is fitted around the outer periphery of the small shaft portion 28, and a clamp member 40 that is fastened with a bolt 42 is attached to the tip of the small shaft portion 28. The bolt 42 is screwed into a screw hole 44 formed coaxially with the cutter body 24. The clamp member 40 is formed in a substantially ring shape having a center hole 46, and the center hole 46 is inserted into a bolt 42 so as to be rotatable around the bolt 42. Further, on the outer peripheral portion of the clamp member 40, three ridges 48 are formed rotationally symmetrically with the central axis of the clamp member 40 as the axis of symmetry at intervals of a central angle of 120 °. The diameter of the circumscribing circle C1 of these ridges 48 is formed to be equal to or smaller than the diameter of the mounting holes 36 and 34 of the cutters 32 and 30, but larger than the diameter of the small diameter portion 28. There is. Further, an arcuate groove 50 is formed in a portion of the clamp member 40 on the base end side of the cutter body 24, and the tip end of a pin 52 mounted on the tip end of the cutter body 24 is inside the groove 50. Slidably engaged with. The groove 50 is formed over a range of a central angle of 60 ° about the central axis O1 of the clamp member 40.

As shown in FIGS. 3 and 4, the collar member 38 has a circular outer peripheral portion, and its diameter is formed larger than the diameter of the shaft portion 26. Further, a hole portion 54 having the same shape as the outer peripheral portion of the clamp member 40 is formed in the inner peripheral portion of the collar member 38, and a circumferential portion 56 and a concave groove portion 58 are alternately formed in the circumferential direction. The inner diameter of the circumferential portion 56 matches the outer diameter of the small diameter portion 28. Further, screw holes 60 are formed in the thickness direction at a plurality of locations (three locations in the figure) on one end side of the collar member 38. A screw portion of a positioning screw 62 is screwed into the screw hole 60, and the head portion of the positioning screw 62 is fitted into a predetermined recess formed in the cutter 32, so that the cutter 32 and the collar member 38 are joined together. Circumferential positioning is performed. The outer peripheral portion on the one end side where the screw holes 60 are formed serves as a pressing portion 39 that presses the cutter 32.

A key groove is formed in a part of the outer peripheral portion of the shaft portion 26, and keys 64 and 66 are mounted in the key groove. The keys 64 and 66 allow the cutter body 24 and the cutter 30, 32 is adapted to rotate integrally. In the milling cutter having the above configuration, the clamp member 40 and the flange member 38 are in a fixed state when they have the positional relationship shown by the solid line in FIG. That is, when viewed in the axial direction, the ridge 48 presses the brim member 38 in a state where the ridge 48 does not overlap the groove 58, whereby the cutters 32 and 30 are fixed to the cutter body 24. It is like this.

Further, when the bolt 42 for pressing the clamp member 40 is loosened from the above-mentioned fixed state and the clamp member 40 is rotated by a predetermined angle in the arrow (a) direction of FIG. 2, the concave groove portion 58 of the collar member 38 is projected. The collar member 38 is easily removed from the hole portion 54 in conformity with the stripe portion 48. When the clamp member 40 is rotated, the engagement between the groove portion 50 and the pin 52 causes the clamp member 40 to stop at the correct releasing position as shown by the phantom line 48a in FIG. With the collar member 38 thus removed, the cutters 32 and 30 can be easily removed from the cutter body 24 by exchanging them. When the cutters 32 and 30 are fixed, the flange member 38 is inserted with its hole portion 54 aligned with the outer peripheral portion of the clamp member 40, and then rotated by a predetermined angle in the arrow (B) direction of FIG. And set it to a fixed position. The fixed position at this time is an accurate position due to the engagement of the groove portion 50 and the pin 52. Then, when the bolt 42 is tightened, the cutters 32 and 30 are pressed and fixed via the clamp member 40 and the collar member 38.

Therefore, according to the milling cutter as described above, the brim member 38 can be removed and the cutters 32 and 30 can be replaced without removing the clamp member 40 and the bolt 42, as compared with the conventional milling cutter. Cutter replacement work can be performed easily and quickly, and workability can be improved.

In the above embodiment, the example of the fly cutter in which the two cutters are attached to the cutter body has been shown, but the present invention is not limited to this, and for example, as shown in FIG. It may be applied to a milling cutter. In the figure, one cutter 32 is attached to the tip side portion of the cutter body 24, and the same constituent elements as those in the above embodiment are designated by the same reference numerals. Of course, such a milling cutter can obtain the same effect as that of the above-mentioned embodiment. Further, in the above-described embodiment, three ridge portions are provided on the outer peripheral portion of the clamp member, but the present invention is not limited to such a configuration, and for example, two ridge portions may be provided. Also, four or more may be provided. However, the ridges need to be rotationally symmetrical. The same applies to the holes formed in the collar member.

[0013]

[Effect of device]

 As described above, according to the milling cutter of the present invention, by loosening the bolt for fixing the clamp member and rotating the clamp member by a predetermined angle, the flange member can be removed without removing the clamp member to remove the cutter. Since the cutter can be replaced, the cutter can be replaced easily and quickly, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a milling cutter according to an embodiment of the present invention.

FIG. 2 is a view from the direction of the arrow II in FIG.

3 is a front view of the collar member of FIG. 1. FIG.

FIG. 4 is a side sectional view of the collar member of FIG.

FIG. 5 is a side view of a milling cutter according to another embodiment of the present invention.

FIG. 6 is a side view of a conventional milling cutter.

7 is a cross-sectional view of the milling cutter of FIG. 6 taken along the line VII-VII.

[Explanation of symbols]

 24 Cutter Main Body 30, 32 Cutter 38 Collar Member 40 Clamping Member 42 Bolt 48 Convex Strip 54 Hole

Claims (1)

[Scope of utility model registration request]
1. A disk-shaped cutter having a cutting edge on the outer peripheral portion and a mounting hole formed in the central portion is inserted into the outer peripheral portion on the distal end side of the cutter main body, and is attached to the proximal end side of the cutter main body by a pressing member. In the milling cutter formed by pressing and fixing, the pressing member is
A collar member having a pressing portion that is inserted into the tip end side of the cutter body and presses the cutter, and a clamp member that is pressed against the base end side of the cutter body by a bolt screwed into the tip side of the cutter body, A plurality of ridges are formed rotationally symmetrically on the outer periphery of the clamp member, and the diameter of the circumscribed circle of these ridges is the same as or smaller than that of the mounting hole of the cutter. A milling cutter, wherein a hole having the same shape as the outer peripheral portion of the clamp member is formed on the inner peripheral portion of the member.
JP3743393U 1993-07-08 1993-07-08 Milling cutter Pending JPH077811U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3743393U JPH077811U (en) 1993-07-08 1993-07-08 Milling cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3743393U JPH077811U (en) 1993-07-08 1993-07-08 Milling cutter

Publications (1)

Publication Number Publication Date
JPH077811U true JPH077811U (en) 1995-02-03

Family

ID=12497387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3743393U Pending JPH077811U (en) 1993-07-08 1993-07-08 Milling cutter

Country Status (1)

Country Link
JP (1) JPH077811U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011136383A (en) * 2009-12-28 2011-07-14 Kyocera Corp Converter for rear face milling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4089616B2 (en) * 2002-02-07 2008-05-28 三菱電機株式会社 Magnetic pole detection device for synchronous AC motor and magnetic pole detection method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4089616B2 (en) * 2002-02-07 2008-05-28 三菱電機株式会社 Magnetic pole detection device for synchronous AC motor and magnetic pole detection method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011136383A (en) * 2009-12-28 2011-07-14 Kyocera Corp Converter for rear face milling

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Legal Events

Date Code Title Description
A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 19980303