JPS61284302A - 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 engaging each of the holder, intermediate and tool modules in protruded and recessed parts, respectively provided in the modules, while connecting each module by a common shaft extending through on the center axis, in the case of the built-up tool for a machine tool. CONSTITUTION:A holder module 1, providing in its one end part a tapered part, is fitted to a main spindle in a machine tool. The module 1, providing a recessed part 7 in the other end, is equipped with a tapered hole 10a penetrating through in the diametric direction. A stepped small contour protruded part 10 in one end of an intermediate module 2 engages with the recessed part 7 of the module 1. A built-up tool, forming height h1 of the protruded part smaller than depth d1 of the recessed part, closely attaches the end surface of the stepped protruded part to the end surface of the recessed part, further the tool is equipped with a key groove 11a and a key 11b for preventing turning action. A cutting tip 16 is mounted to the point end of a tool module 3 fixed by the similar method. And the built-up tool, providing through holes 8a, 8b, 8c on the center axis of each module, inserts a shaft 4 to be fixed to the main spindle by a pull stud 19.

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, medium- and small-volume production in cutting processes.A representative example is Sandvic's Varilock Holding Tool System (V).
arilock Holding Tool System
The tools in this tool assembly system with em) 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 and is commonly used.

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 modules, 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]

It is an object of the present invention to construct 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.

The assembly tool includes an intermediate module inserted between the holder module and the cutter module.

and the above cutter module and intermediate module.

By engaging the concave portion formed in one module with the convex portion formed in the other module, and connecting them together by a common shaft passing on the central axis of each module, the required tool can be Maintains rigidity 1 assembly accuracy,
Moreover, it can be easily assembled into the required tool.

[Embodiments of the invention]

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

Figure 1 shows an assembly tool that is an embodiment of this invention.

In addition, this assembly tool, whose assembly exploded view is shown in Fig. 2,
It consists of a holder module ■, an intermediate module ■, a cutter module ■ and a shaft).

Especially the intermediate module ■ and the blade module ■.

Various types are available depending on 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 0 in the middle. It is formed in the shape of a truncated cone, and a recess (2) is provided on the other end side along the central axis and opens to the other end surface.

Further, a through hole (8a) is provided on the central axis, the diameter of which is smaller than that of the recess (1), through which a shaft (to be described later) is inserted.

The intermediate module (■) is formed into a cylindrical shape with one step.

One end of the convex portion (10) is a small diameter convex portion (10) that fits into the concave portion (2) provided in the holder module (2).
The height hl of 10) is lower than the depth dl of the recess ■, and when the protrusion (10) is correctly engaged with the recess ■ so that the end surface of the stepped portion comes into close contact with the other end surface of the holder module ω, the height hl of the recess ■ A certain gap is created between the tip end surface and the bottom surface of the recess. The side surface of this convex portion (10) is provided with a key (lla) that engages with a key groove (lla) provided on the side surface of the concave portion (10) in order to prevent rotation relative to the holder module (10).
b) is provided.

Also, the large diameter part of the other end of this intermediate module ■.

A recess (12) is provided along the central axis and has the same diameter as the recess (2) of the holder module (2) and opens at the other end. Further, on the central axis, a through hole (8b) is provided which is smaller in diameter than the recess (12) and into which a shaft (described later) is inserted, similar to the holder module (1).

The cutter module (■) is formed into a cylindrical shape with one step, and one end thereof has a recess (12) provided in the intermediate module (■).
) is formed with a small-diameter convex portion (14) that fits into the convex portion (14). The height h8 of the convex part (14) is lower than the depth d2 of the concave part (12), and the convex part (14) is placed correctly in the concave part (12) so that the end face of the stepped part is in close contact with the other end face of the intermediate module ■. When engaged, a certain gap is created between the tip end surface and the bottom surface of the recess. On the side surface of this convex portion (14), the above-mentioned intermediate module (1) is attached.

In order to prevent rotation relative to this intermediate module (1), a keyway (15a) provided on the side surface of the recess (12)
A key (15b) is provided which engages with the key (15b). Also, on the central axis of this cutter module (2), a through hole (8c) is provided through which the shaft (like the intermediate module (2) of the holder module) is inserted, and the opening on the other end side is formed with a large diameter. . Note that a cutting tip (16) is attached to the other end of the blade module (5).

The shaft (a) is inserted into a coaxial through hole formed on the central axis of each of the modules ω to (iv) when properly engaged with each other. Its total length is longer than the total length C of the properly engaged modules ω to ■.

The large diameter part (18) formed at the base end is connected to the blade module■
When it is fitted into the large-diameter portion opening on the other end surface, its tip protrudes from one end surface of the holder module ■, and the protrusion has a pull stud (19 ) is provided. The properly engaged modules ω to (2) and the shaft (1) are temporarily fixed by a set screw (20) screwed into the side surface of the other end of the holder module (2), so that they will not be easily separated.

To assemble this assembly tool, a required blade module ■ and an intermediate module ■ with required dimensions are selected from a plurality of various blade modules ■ and intermediate modules ■, corresponding to the machining shape of the workpiece, and then the cutter module ■, Insert the intermediate module ■, the holder module ■ into the required shaft (a) selected from the multiple shafts in this order,
And it is obtained by engaging the concave portions and convex portions between each module 0 to 0. Note that 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).

As described above, the holder module ■ and the intermediate module ■, and the blade 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,
If each of these modules is configured to be connected integrally with the shaft (to the shaft), when this is attached to the main shaft of a machine tool, compressive force is applied between each module 0 to 0 to firmly fix it. The tool rigidity can be increased, and the runout in the radial direction can also be reduced.

Further, the angle of the cutting edge of the tool can be accurately positioned by the keys and keyways provided in the concave portions and convex portions between each module 0 and 0. Furthermore, this assembly tool is a cutter module■
, the intermediate module (1), and the holder module (into the shaft) in this order, they are connected, so assembly is simple.

〔Effect of the invention〕

The holder module, intermediate module, and cutter module that constitute the assembly tool are each engaged with a recess formed in one module and a protrusion formed in the other module, and these are connected by a shaft passing on the central axis of the holder module, intermediate module, and cutter module. Since it is configured to be integrally connected and attached to the main shaft of a machine tool, the engagement of the concave and convex portions and the integral connection action of the shaft create an assembly tool that has the required rigidity 9 assembly accuracy and is easy to assemble. can do.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an assembly tool which is an embodiment of the present invention.
FIG. 2 is an exploded view of the assembly. ■...Holder module ■...Intermediate module■...Cutter module (A)...Shaft■
... recess (8a), (8b)
, (8c) - Through hole (10)...Convex part
(12)...Concave part (14)...Convex part Agent Patent attorney Inoue - Male Figure 1 Figure 2

Claims (3)

[Claims] (1) A holder module attached to the main shaft of a machine tool, a cutter module having a cutting tool, and an intermediate module inserted between the holder module and the cutter module, the holder module and the intermediate The module, the blade module, and the intermediate module each engage with each other at an engaging portion consisting of a recess formed in one module and a protrusion formed in the other module, and each of the modules An assembly tool characterized by being connected together by a common shaft passing on a central axis. (2) The assembly tool according to claim 1, wherein the engaging portion has a key provided on one of the concave portion and the convex portion, and a keyway provided on the other. (3) The assembly tool according to claim 1, wherein the shaft has a pull stud at one end.