JPH0329064Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a processing device for a facing machine that can improve the efficiency of surface processing operations.

[Conventional technology]

In conventional facing machines, when a circular cutter having multiple concentric blades, such as a full-buff cutter, is attached to or removed from a machined face plate provided on the main shaft, the replacement work must be performed manually.
For this reason, when performing machining work with a single-blade tool and facing work on a single workpiece, the workpiece was transferred between a machine tool with a single-blade tool and a facing machine. .

[Problems to be Solved by the Invention] In the conventional machine tools described above, if a tool with a single blade is used to perform surface machining, the machining time will be long and the work efficiency will be poor. For this reason, a circular cutter having a large number of concentric blades, such as a full back cutter, is used, but these circular cutters are large and have the drawback of not being able to automatically change tools. For this reason, it is extremely difficult to use a facing machine equipped with a circular cutter to perform multi-step machining work by exchanging tools with other tools. There was a problem that work efficiency and operation rate decreased because of the need to perform the following steps.

The present invention was developed to solve the above-mentioned drawbacks and problems. It enables one facing machine to perform surface machining similar to that of a circular cutter, and also allows automatic tool exchange to be performed using other tools. An object of the present invention is to provide a processing device for a facing machine capable of improving work efficiency and operation rate by performing multi-step processing work by exchanging tools.

[Means for solving problems]

The present invention provides a means for solving the above-mentioned problems in a facing machine having a machining face plate on which a tool holder is disposed as a main axis. A tool holder, a split tool concentrically divided so that the cutting edge is arranged on the same arc when the tool is inserted into the tool insertion part of the tool holder, and a tool insertion opening provided in the tool holder. This facing machine processing device includes a tool clamping means for clamping a tool positioned and inserted into the tool holder, and a tool holder which can be adjusted so that the tool holder becomes concentric when the split tool is inserted into the tool holder.

[Effect]

The face machining cutter of the present invention is made smaller and lighter by dividing the conventional circular cutter into two or more tools, and can be used as a replacement tool by providing a taper shank or the like. By removably holding one or more of these divided tools for surface machining concentrically with a tool holder of a facing machine, the same surface machining as that of a conventional circular cutter can be performed efficiently. Furthermore, since automatic tool exchange has become possible, machining processes other than the above-mentioned surface machining can also be performed with the same facing machine.

〔Example〕

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

First, I will explain the configuration. 5 and 6 are a side view and a front view of an example of a facing machine to which the present invention is applied. In this facing machine, a radially movable tool holder 2 is arranged on a machining face plate 1 on a horizontal main shaft, and this tool holder 2 is provided with a tool clamping means to be described later. The positioned split tool 3 can be removably clamped. The main shaft is housing 4
It is supported by a motor 5 and rotated by a motor 5. An automatic tool changer (hereinafter referred to as ATC) 6 is disposed on the upper part of the housing 4, and a magazine 7 for storing replacement tools is disposed above the automatic tool changer (hereinafter referred to as ATC) so that a predetermined tool can be indexed. The housing 4 is slid on the bed 10 in the main shaft direction (Z direction) by a motor 8, a ball screw, etc., and is further moved in the vertical direction (U) by a motor, ball screw, etc. (not shown). direction). A workpiece 10 is placed and fixed on a table 11 and can be indexed in a horizontal plane. The housing 4 is slid on the bed 9 in a direction perpendicular to the main shaft (X direction) by a motor, a ball screw, a saddle 12, etc. (not shown). It goes without saying that the arrangement of the main shaft (horizontal type), magazine, type of ATC, number of control axes, etc. of the facing machine are not limited to the above.

Next, an example of the configuration of the main parts of the present invention will be explained with reference to side views A and B of the main parts and front view C of the dividing tool in FIG. A tool holder 2 of a machining face plate 1 disposed on the main shaft is provided with a tapered hole 2a, and holds a split tool 3 having a tapered shank 3a. The split tool 3 is attached to the tool holder 2 as shown in FIG.
A circular cutter is divided concentrically into two or more parts so that the cutting edge is placed on the same arc when the tool is inserted into the tool insertion part of the tool. A shank 3a, a pull stud 3b for being clamped by the tool clamping means 13, and a V groove 3C for being gripped by the ATC 6.
and. Furthermore, this split tool 3 is provided with a key groove, and when it is inserted into the tool holder 2 by the ATC 6, it fits into the key 2b provided on the tool holder 2 side, and the blade 3d of the split tool is concentrically aligned. The shafts are positioned so that they are aligned and serve as a torque transmitting means when the main shaft rotates. The tool holder 2 has a tool clamping means 13, which will be described later, and is arranged so as to be movable toward and away from the tool holder in synchronization with the radial center direction. This radial movement is caused by the bevel gear 1 being rotated by an actuator (not shown).
4, 14' and a threaded male threaded shaft 15 that rotates together with the bevel gear 14';
is screwed into the tool holder 2 and moves in the radial direction.
This is done by a female threaded piece 16 fixed to the . These constitute the tool positioning means of the present invention. FIG. 2 is a sectional view showing another embodiment of the present invention, in which the split tool 3 is disposed so as to be movable in the radial direction on one side, and a balance weight 17 is disposed on the other side. Even with such a configuration, the purpose of the present invention can be fully achieved. In this case, it is preferable to reduce the number of divisions of the circular cutter and increase the number of blades.

In addition, in Fig. 1, two split tools are gripped so as to be movable in the radial direction, but it goes without saying that one of them may be fixed. A tool holder may be provided.

Next, the structure of the tool clamping means 13 will be explained with reference to a sectional view of the tool clamping means in FIG. The tool clamping means 13 is provided with, for example, a three-split collet 18 having a locking pawl deep inside the taper portion 2a, and locks and clamps the pull stud 3b at the tip of the taper shank 3a of the tool. When the collet 18 moves forward, its diameter increases due to the large diameter portion 2c, and the pull stud 3b is released and unclamped. (Illustrated by the two-dot chain line in Figure 3). The back and forth movement of the collet 18 is achieved by being locked by a locking portion provided on the piston 19, and the piston 19 receives additional force from a biasing member such as a disc spring 20 to move (backward) to the clamp position. The movement (advancement) to the unclamping position is performed by moving the cylinder 2 from the outside via the hydraulic coupling 21 and the oil passage 22.
It is pushed out by the hydraulic pressure supplied to 3.

This hydraulic pressure supply means will be explained with reference to a sectional view of the hydraulic pressure supply means in FIG. The hydraulic coupling 21 protrudes from the tool holder 2 and is attached to the fixed side (housing 4 or
It fits into the hydraulic coupling 25 of the hydraulic pressure supply means 24 disposed on the ATC 6 side). The hydraulic coupling 25 has a built-in shut-off valve and a check valve, so that oil supply is stopped when the couplings are not fitted, and oil supply is enabled when the couplings are fitted. This fit is connected to the piston 26 in the cylinder of the hydraulic supply means 24.
It is pushed out by the drive. Due to this fitting, strong pressure oil is supplied to the tool clamp gripping means 13 via the oil pipe 24a, the oil path 24b, and the hydraulic coupling 25. Note that the positions of the hydraulic couplings 21 and 25 are not limited as long as they are not supported during machining, and may be any position such as upper, lower, or sideways.

The operation of this embodiment configured as above will be described. The splitting tools 3 stored in the magazine 7 are selected and indexed. On the other hand, hydraulic coupling 2
5 is pushed out by the hydraulic supply device 24 and fitted with the hydraulic coupling 21 on the tool holder 2 side, and the cylinder 2
3 is supplied with pressure oil, the piston 19 is pushed out, the collet 18 is opened, and the pull stud door of the tool is opened.
The lock is released and the tool can be attached and detached. Here, when the tool is exchanged by the ATC 6 and the divided tool 3 is positioned in the tool holder 2 using the key, and then the supply of pressure oil is stopped, the piston 19 is pushed back by the disc spring 20. The collet 18 locks and clamps the pull stud 3b of the split tool 3. At this time, the pressure oil is returned via the hydraulic couplings 21 and 25, and after this, the hydraulic coupling 25 is pulled back and the hydraulic coupling 2
1 and the surface machining work begins. This split tool is positioned by the key 2b so that its plurality of blades are lined up concentrically with respect to the main shaft, so surface machining operations can be performed almost the same as with conventional circular cutters. What's more, ATC allows the tool to be replaced with other tools, so a single facing machine can perform multiple machining processes. This split tool can also be applied to similarly split milling cutters, etc., enabling even more diverse continuous machining operations.

[Effect of idea]

As described above, according to the present invention, it is possible to perform tool exchange between machining work similar to that of a circular cutter such as a full back cutter or milling cutter using a single facing machine, and machining work using a single-blade tool. As a result, it is no longer necessary to transfer the workpiece to another device for each of the above-mentioned operations and to manually replace the circular cutter. As a result, it became possible to improve the efficiency of machining work and the operating rate of the equipment, and also solve the problem of work safety when transferring workpieces and exchanging tools. In addition, the split tool for surface machining, which can do the same machining work as a circular cutter, can now be automatically replaced, so FMS
It has become possible to aim for automation in other areas. The present invention has the above-mentioned effects.

[Brief explanation of the drawing]

Fig. 1 is a side view A and B showing an example of the configuration of the essential parts of the present invention, a front view C of a split tool, Fig. 2 is a sectional view showing another embodiment, and Fig. 3 is a sectional view of the tool clamping means. 4 is a sectional view of the hydraulic pressure supply means, FIG. 5 is a side view of an example of a facing machine, and FIG. 6 is a front view thereof. 1... Machining face plate, 2... Tool holder, 3... Split tool, 3a... Taper shank, 3b... Pull stud, 6... ATC, 7... Magazine, 1
0... Workpiece, 13... Tool clamping means, 1
4, 14'...Bevel gear, 15...Male thread shaft, 16...Female thread top, 17...Balance weight, 18...Collection, 19...Piston, 2
0... Belleville spring (biasing member), 21, 25... Hydraulic coupling, 22... Oil passage, 23... Cylinder, 24... Hydraulic pressure supply means.

Claims (1)

[Scope of utility model registration request] In a facing machine having a machining face plate on which a tool holder is arranged as a main axis, a plurality of tool holders are disposed movably in the radial direction on the machining face plate and are provided with tool positioning means, and tool insertion of the tool holders is provided. A split tool that is concentrically divided so that the cutting edge is arranged on the same arc when the tool is inserted into the tool holder, and a tool that is provided in the tool holder and clamps the tool that is positioned and inserted into the tool insertion opening. A processing device for a facing machine, characterized in that a clamping means and a tool holder are adjustable so that when the split tool is inserted into the tool holder, the tool holder becomes concentric circles.