JPS61284301A - Built-up tool - Google Patents

Abstract

PURPOSE:To obtain a high rigid and high accurate built-up tool to be easily mounted and removed, by providing a holder module, tool module and an intermediate module to be engaged and fixed by protruded and recessed parts respectively equipped in the modules, in the case of the built-up tool for a machine tool. CONSTITUTION:A holder module 1, providing in its one end a tapered part to be fitted to a main spindle in a machine tool, is fixed by a pull stud 8. The module 1, providing a recessed part 9 in the other end part, is equipped with a tapered hole 10a extending through in the diametric direction. A small contour protruded part 12 in a stepped column-shaped intermediate module 2 engages with the recessed part 9 of the holder module 1. A built-up tool, forming height h1 of the protruded part smaller than depth d1 of the recessed part, provides a fixed clearance between the point end surface of the protruded part and the bottom surface of the recessed part. The tool, providing a tapered hole 10b so as to be coaxially aligned with the tapered hole 10a when the modules 1, 2 are properly engaged, fixes the modules by a cotter 4. A cutting tip 17 is mounted to the point end of a tool module 3 fixed by the similar method. In this way, the built-up tool can be easily assembled by wedge action of the cotter 4 further the tool improves its rigidity and accuracy.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a tool used for cutting, and in particular, an intermediate module is provided between a cutter module having a cutting tool and a holder module attached to the main shaft of a machine tool. The present invention relates to an assembly tool that can be assembled by detachably arranging the components.

[Technical background of the invention and its problems]

Tool assembly systems are attracting attention as a production method suitable for high-mix, small-to-medium-volume production in cutting processing. A typical example is Sandvic's Varilock Holding Tool System (Var
ilock rolling tool system
m), the tools in this tool assembly system are:

It is composed of a holder module, a spacer module, an adapter module, and a cutter module, and the holder module is attached to the main shaft of a machine tool so that it can be used in common. .

In addition, the spacer module is used to change the dimensions of the tool shank, and the adapter module is used to directly attach a milling cutter, drill, etc. in addition to the cutter module that has the processing tool. By combining these, it is possible to assemble any desired tool.

However, this conventional assembly tool has problems in terms of tool rigidity and assembly accuracy, and also has the problem that assembly takes time.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an assembly tool that has good tool rigidity, assembly accuracy, and assembly workability and can flexibly respond to machining requests.

[Summary of the invention]

A holder module that is attached to the main axis of a machine tool,
A cutter module with a cutting tool.

An assembly tool having an intermediate module inserted between the holder module and the blade module, the holder module and the intermediate module, and the blade module and the intermediate module.

A wedge-shaped wedge that engages with a concave portion formed in one module and a convex portion formed in the other module, and is removably inserted into a tapered hole that passes through the engaging portion consisting of these concave portions and convex portions. By configuring the parts to be connected and fixed in a replaceable manner using fasteners, the required tool rigidity and assembly accuracy can be maintained, and it can be easily assembled into a desired tool.

[Embodiments of the invention]

Hereinafter, the present invention will be described based on embodiments with reference to the drawings.

Fig. 1 shows an assembly tool according to an embodiment of the present invention, and Fig. 2 shows an exploded view of the assembly. It consists of (2), and in particular, various types of intermediate module (2) and cutter module (2) are prepared according to processing requirements.

The above-mentioned holder module ■ is for attaching this assembly tool to the main shaft of a machine tool, and its one end side fits into a tapered hole formed in the main shaft of the machine tool, with the flange part ■ in the middle. It is formed in the shape of a truncated cone, and a pull stud (2) for fixing the holder module to the main shaft is provided at its small diameter tip. Also on the other end side, along the central axis of this holder module ■.

A recess 0 opening at the other end surface is provided, and a tapered hole (10a) passing through the recess 0 in the diametrical direction of the holder module (2) is further provided.

The intermediate module (2) is formed into a columnar shape with one step, and one end thereof forms a convex portion (12) with a small diameter that fits into the recess (2) provided in the holder module (2). The height h of this convex part (12) is lower than the depth d of the concave part ■, so that when it is correctly engaged with the concave part 0, a certain gap is created between its tip and the bottom of the concave part. It has become. This convex part (12
) is provided with a tapered hole (lob) that is coaxial with the tapered hole (10a) that crosses the recess (2) when properly engaged with the recess (2). Further, the large diameter portion of the other end is provided with a recess (13) that opens on the other end surface and has the same size as the recess 0) of the holder module (1). A tapered hole (14a) is provided which extends diametrically through the intermediate module (1) across the intermediate module (2).

The cutter module (2) is formed into a stepped cylindrical shape, and one end thereof has a recess (13) provided in the intermediate module (2).
) is formed with a small-diameter convex portion (16) that fits into the convex portion (16). The height h2 of this convex part (16) is lower than the depth d2 of the concave part (13), and when the convex part (16) is properly engaged with the concave part (13), a certain gap is created between its tip and the bottom of the concave part. It looks like this. Further, this convex portion (16) has the above-mentioned concave portion (1).
3) is provided with a tapered hole (14b) that is coaxial with the tapered hole (14a) that traverses this recess (13) when properly engaged. Note that a tip (17) for cutting is attached to the tip of this blade module (2).

), ■ is formed into a wedge shape, and when the holder module ■ and the intermediate module ■, and the intermediate module ■ and the cutter module ■ are correctly combined, there is a coaxial taper hole formed between each module. (10a)
, (10b), (14a), and (14b) in a detachable manner, and connect and fix each of these modules (1) to (2) together.

To assemble this assembly tool, select the required cutter module interval ■ and the intermediate module ■ of the required dimensions from various multiple cutter modules ■ and intermediate modules ■ according to the machining shape of the workpiece, and then insert these into the holder module. In combination with this combination, the taper hole formed in each engaging part is inserted (a).

It can be obtained by typing ■. In order to construct the intermediate module (2) having the required dimensions, it is optional to select and combine two or more modules from the plurality of prepared intermediate modules (2).

Note that this assembly tool can be easily disassembled by punching out the wedges () and (c) in the direction that the wedge will loosen.

As described above, the holder module ■ and the intermediate module ■, and the cutter module ■ and the intermediate module ■, which constitute the assembly tool, are engaged with the recess formed in one module and the protrusion formed in the other module, respectively. let me,
A wedge-shaped footer is formed in the tapered hole formed in these concave and convex parts.

When ■ is driven in and connected and fixed together, each module is strongly pulled in the axial direction by the wedge action of the cock (A) and ■, increasing its rigidity and reducing diametrical runout. Can be made smaller. Also, by driving these cocks (A) and (2), the angle of the cutting edge of the tool can be accurately positioned.

Furthermore, this assembly tool simply engages the blade module (■), intermediate module (■), and holder module (■) with their recesses and protrusions in sequence, and connects them by driving a kotsuta into the tapered hole formed in the engaging part. Because of this, it is easy to assemble.

In addition, in the above example, a cock with a one-sided slope was used, but
The footer may be beveled on both sides or may include other fasteners such as taber pins.

〔Effect of the invention〕

A holder module, an intermediate module, and a cutter module constituting an assembly tool are respectively engaged with a recess formed in one module and a projection formed in the other module, and the recess formed in the recess and the projection are formed in the recess and the projection. Since each module is connected and fixed together by inserting a wedge-shaped fastener into the tapered hole in a detachable manner, the required rigidity can be achieved by the engagement of the concave and convex parts and the wedge action of the fastener. It is possible to provide an assembly tool that can be easily held, has high assembly accuracy, and is easy to assemble.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of an assembly tool according to an embodiment of the present invention, and FIG. 2 is an exploded view of the assembly tool.

Claims (1)

[Claims] A holder module that is attached to the main axis of a machine tool,
The blade module includes a cutting tool module having a cutting tool, and an intermediate module inserted between the holder module and the blade module, and the holder module and the intermediate module, and the blade module and the intermediate module each have one side. A wedge-shaped fastener that engages a concave portion formed in one module with a convex portion formed in the other module, and is removably inserted into a tapered hole that passes through the engaging portion consisting of these concave portions and convex portions. An assembly tool characterized by being connected and fixed in a replaceable manner.