JPH0624804U - Tool fixing sleeve - Google Patents

Abstract

(57) [Summary] (Correction) [Configuration] A cylindrical sleeve having a fitting hole with one end open, into which the cutting tool is inserted, and the blade of the cutting tool is positioned. A sleeve for fixing a tool, in which an introduction hole is formed in the vicinity of the tip portion, and the cutting oil introduced from the introduction hole is jetted to the blade portion. [Effect] The cutting tool fixed in the fitting hole of the sleeve can be used in a machine equipped with a rotary tool rest, and the working efficiency can be further improved in metal working including inner diameter working.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tool fixing sleeve that holds a cutting tool.

[0002]

[Prior art]

 Conventionally, as a tool-fixing sleeve (hereinafter, simply referred to as a sleeve) having a fitting hole for holding a cutting tool for inner diameter processing, there is a sleeve T having both ends opened as shown in FIG. .

The sleeve T introduces cutting oil from an introduction hole 33 a formed in the rear end portion 36, and the cutting oil is supplied to the surface of the blade portion 34 by a cutting oil supply passage (hereinafter referred to as a supply passage) 33. It is applied to a cutting tool 30 having a structure in which it is sent to a jetting hole 33b bored in a hole and is jetted from the jetting hole 33b toward a cutting tip 35 at the tip. In order to introduce cutting oil from the above-mentioned introduction hole 33a, an internal thread is formed in the introduction hole 33a, and a joint J for connection with the oil pipe P is screwed into this, so that the sleeve is formed. Both ends of T were open.

Further, as a conventional sleeve having a mode different from that of the sleeve T, the front end as shown in FIG. 8 is opened, while the closed rear end portion 22 is fitted with an oil pipe P around it. Therefore, there is a sleeve R having a columnar shape and having a convex portion 17 having a through hole 17a communicating with the fitting hole 11 at the center.

In this sleeve R, the cutout surface 32 formed on the outer periphery of the shank 31 is formed only from the rear end portion 36 to the middle of the shank, and the cutout surface 32 is introduced from an introduction hole 33 a provided in the cutout surface 32. Applied to the cutting tool 30 having a structure in which the cutting oil is sent to the ejection hole 33b formed on the surface of the blade 34 by the supply passage 33 and ejected from the ejection hole 33b to the cutting tip 35 at the tip. Met. In this cutting tool 30, since the shank 31 is provided with the portion K where the notch surface 32 is not formed, the portion K and the wall surface 11a of the fitting hole 11 are sealed, and the cutting oil does not leak. Therefore, it is assumed that the rear end portion 22 of the sleeve R is closed, the convex portion 17 is formed therein, and the cutting oil is inserted into the fitting hole 11 from the oil pipe P inserted around the convex portion 17. Was being supplied.

[0006]

[Problems of the prior art]

 However, the above conventional sleeve has the following problems.

That is, in the former sleeve whose both ends are open and the latter sleeve whose rear end is closed, the cutting oil is supplied to the tip of the cutting tool tip fixed in the fitting hole, so that the rear end side of the sleeve is I had to put an oil pipe on. When such a sleeve is installed in the tool block and fixed to the rotary tool post for combined machining, when the rotary tool post is rotated, the oil pipe located on the rear side of the sleeve interferes with the machine body. Oops. Therefore, a cutting tool for inner diameter machining cannot be used on the machine body with a rotary tool rest, and in complex machining operations including inner diameter machining, only the inner diameter machining must be performed using another machine. However, there was a problem that work efficiency deteriorated.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a fitting hole whose one end is closed, and in a cylindrical shape for inserting a cutting tool into the fitting hole, a tip end position where a blade part of the cutting tool is located. An introduction hole for taking in cutting oil is provided in the vicinity, and a supply passage communicating with the introduction hole is further provided so that the introduced cutting oil is jetted to the blade portion. As a result, the rear end of the sleeve is made flat and the cutting tool for internal diameter machining can be attached to the rotary tool post.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sleeve 1, and 10 is a cylindrical sleeve body having fitting holes 11 with both ends open, with a large-diameter stopper 12 at the tip and a circular cross section at the rear end 13. A concave portion 13a having a shape is formed. Further, 20 is a disk-shaped rear lid for closing the rear end portion 13 of the sleeve body 10.

The sleeve body 10 has an introduction hole 14a for taking in cutting oil in the side surface 12a of the stopper 12 at the tip, and the cutting oil is supplied to the fitting hole 11 in the recess 13a. A delivery hole 14b is provided, and a supply passage 14 is provided which communicates with the delivery hole 14b and the introduction hole 14a. An internal screw is formed in the introduction hole 14a so that a joint J for connection with the oil pipe P can be fitted therein.

Further, in order to connect the sleeve body 10 and the rear lid 20, the recessed portion of the sleeve body 10 is arranged so that the O-ring L for preventing the leakage of cutting oil abuts the entire circumference of the side wall 16 of the recessed portion 13a. The O-ring L is fitted to 13a, and in this state, the tips of the bolts B and B are passed through the bolt holes 21 and 21 formed in the rear lid 20, and these are further formed in the recess 13a of the sleeve body 10. The rear lid 20 is fixed by screwing it into the bolt holes 15, 15. This seals the cutting oil so that it does not leak from around the rear lid 20.

As shown in FIG. 2, the sleeve 1 in which the sleeve body 10 and the rear lid 20 are coupled to each other as shown in FIG. 2 passes through the joint J from the oil pipe P, and is introduced through the introduction hole 14 a formed in the stopper 12. The oil flows through the supply passage 14 through the delivery hole 14b formed in the recess 13a into the recess 13a, and the cutting oil is supplied into the fitting hole 11 communicating with the recess 13a. ing.

FIG. 3 shows a structure in which the shank 31 of the cutting tool 30 for machining the inner diameter is fixed in the fitting hole 11 of the sleeve 1, and the cutting oil supplied into the fitting hole 11 through the supply passage 14 is provided. Is a spout formed on the surface of the blade portion 34 from the introduction hole 33a formed on the cutout surface 32 of the shank 31 constituting the cutting tool 30 through the supply passage 33 communicating with the introduction hole 33a. It is designed to eject from the hole 33b to the tip 35 at the tip.

The cutting tool 30 is provided with a portion K where the cutout surface 32 is not formed in the shank 31, and by this, the portion K and the wall surface 11a of the fitting hole 11 are sealed, and the cutting oil is removed. It has a structure that does not leak.

The sleeve 1 having the cutting tool 30 mounted in the fitting hole 11 as described above is provided with the introduction hole 14a for taking in cutting oil in the side surface 12a of the tipper 12 of the tip, and the recess 13a is formed in the recess 13a. A delivery hole 14b is formed to supply cutting oil into the fitting hole 11, and a supply passage 14 communicating with the delivery hole 14b and the introduction hole 14a is provided, whereby the rear end portion 13 is provided. (The rear lid 20) is made flat, and it is not necessary to dispose the oil pipe P on the rear end side thereof. Therefore, as shown in FIG. 4, the sleeve 1 is fitted in the tooling holder 40, the tooling holder 40 is attached to the rotary tool rest 50 of the machine body M, and the rotary tool rest 50 is rotated. The pipe P and the machine body M do not interfere with each other even when the cutting operation is performed by cutting. Therefore, the sleeve 1 allows the cutting tool for inner diameter machining to be applied to the machine equipped with the rotary tool post 50, and in the complex machining work including the inner diameter machining, only the inner diameter machining is performed using another machine. Instead, all processing operations can be performed continuously, so that work efficiency can be further improved.

The outlet 14b communicating with the supply passage 14 may be formed in the inner wall 11a of the fitting hole 11 as shown in FIG.

Further, as shown in FIG. 6, in the sleeve 1 having no stopper 12, the sleeve 1 has its tip at an appropriate portion exposed to the outside when mounted on the tooling holder 40 (see FIG. 4). The introduction hole 14a communicating with the supply passage 14 may be formed.

The O-ring L is preferably made of nitrile rubber, styrene butadiene rubber, ethylene propylene rubber, silicon rubber, fluororubber, or the like, which is specified in Japanese Industrial Standard B2401.

[0020]

[Effect of device]

 In the present invention, a sleeve for fixing a cutting tool is provided with an introduction hole for introducing cutting oil in the vicinity of a tip portion where the blade of the cutting tool is located, so that the cutting tool is provided with a rotary tool post. It can be applied to equipped machines, and in metal processing work including inner diameter machining, all machining work can be performed continuously without using only another machine for inner diameter machining, thus improving work efficiency. Can be further increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a tool fixing sleeve according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a tool fixing sleeve according to an embodiment of the present invention.

FIG. 3 is a sectional view of an essential part showing a tool fixing sleeve and a cutting tool according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a tool fixing sleeve of the present invention fitted with a cutting tool and attached to a rotary tool rest of a machine body.

FIG. 5 is a cross-sectional view of essential parts showing a tool fixing sleeve and a cutting tool according to an embodiment of the present invention in which a cutting oil supply passage is formed in a wall surface of a fitting hole.

FIG. 6 is a sectional view of an essential part showing a tool fixing sleeve and a cutting tool according to an embodiment of the present invention having no stopper at the tip.

FIG. 7 is a cross-sectional view of essential parts showing a conventional tool fixing sleeve having both ends opened and a cutting tool.

FIG. 8 is a sectional view of essential parts showing a conventional tool fixing sleeve having a columnar convex portion formed at a closed rear end portion and a cutting tool.

[Explanation of reference numerals] 1 sleeve 10 sleeve body 11 fitting hole 12 stopper 13 rear end portion 13a recess 14 cutting oil supply path 14a introduction hole 14b delivery hole 15 bolt hole 16 side wall 20 rear wall 21 bolt hole 30 cutting tool 31 shank 32 Notch surface 33 Cutting oil supply passage 33a Introduction hole 33b Delivery hole 34 Blade portion 35 Cutting tip 36 Rear end portion P Oil pipe J Joint B Bolt L O ring M Machine body

Claims (1)

[Scope of utility model registration request] 1. A cylindrical sleeve for inserting a cutting tool into the fitting hole, the fitting hole having an opening at one end, the guide sleeve being introduced in the vicinity of the tip portion where the blade of the cutting tool is located. A tool fixing sleeve which is provided with a hole and the cutting oil introduced from the introduction hole is jetted to the blade portion.