JPS643609Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stopper device for the forward position of each gearing head in an exchangeable gearing head machine tool.

Conventionally, as a machine tool of this kind, a processing unit is provided on a base so that it can be fed forward by a feeding mechanism, and a plurality of gearing heads each having a tool on the front side are arranged around its outer periphery, and these are sequentially selected on the front side of the unit. A type is known in which the head is freely configured so that when the unit moves forward, the head on the front side advances accordingly and a predetermined machining is applied to the workpiece on the work table in front of it. However, in this case, the stopper means for regulating the forward position of each gearing head is generally provided with a positioning member on the unit, and a stopper member cooperating with the positioning member located in the front position on the base. In such a machine, the advancing position of each gearing head is always constant, and in other words, the advancing position of the tool in front of it, that is, the machining depth on the workpiece side, is limited to a constant value, and thus the machining depth can be increased. In order to do this, it is necessary to increase the protrusion length of the tool, which is inevitably troublesome.

The purpose of the present invention is to obtain a device free of such inconveniences, and a tool 4 is mounted on the outer periphery of a machining unit 2, which is provided on a base 1 so as to be able to freely feed forward via a feed mechanism 3. A gearing head replaceable type in which a plurality of gearing heads 5 having a structure are disposed, the heads 5 are sequentially arranged in a freely selectable manner on the front surface of the unit 2, and the selected head 5 is coupled to the unit 2 by advancing the unit 2. In the machine tool, the base 1 is placed on the lower surface of the gearing head 5.
Each positioning member 8 is provided which abuts on a common one stopper member 9 at the upper front position, and the contact surfaces of each positioning member 8 with the stopper member 9 are offset back and forth from each other. Each positioning member 8
The present invention is characterized in that a support surface 8a is formed which abuts and is supported on the front surface of the processing unit 2.

The processing unit 2 has a sliding table 2a below it.
The gear head 5 is placed on the guide rail 1a on the upper surface of the base 1 and can move forward and backward along the guide rail 1a. However, in this case, the four heads 5 are mounted and supported on an annular rail 11 consisting of a movable rail 11a at the front and a fixed rail 11b at the rear, and are fed and rotated along this annular rail 11.

The positioning members 8 are displaced back and forth relative to each other, for example, as clearly shown _{in FIG} . The rear end surface has a support surface 8a that is supported in contact with the front surface of the processing unit 2 when the respective heads 5 are connected to the processing unit 2.
was formed.

To explain its operation, consider the case where when the machining unit 2 moves forward, the gearing head 5 on the front side moves forward and the workpiece 7 in front of it is machined by the tool 4 on the front side. The forward position of the head 5 is regulated at the position where its own positioning member 8 abuts against the stopper member 9 in front of it, and the forward position is thus determined by the protruding length of the member 8. That is, when the member 8 extends relatively long forward, its forward position is relatively small, and
When it is relatively short, the forward position is further forward, and thus the machining depth can be freely adjusted while keeping the protruding length of the tool 4 constant.

In this way, according to the present invention, on the lower surface of each of the plurality of gearing heads 5 disposed on the outer periphery of the processing unit 2, each positioning member is provided which abuts on a common stopper member 9 at the front position on the base 1. Since the member 8 is provided, and the abutment surfaces of the member 8 and the stopper member 9 are offset back and forth, the advancing position of each gearing head 5 is offset, and the protrusion of the tool is It is possible to regulate the length to a constant value, and the regulating means is simply controlled by simply controlling the dimensions of the positioning member 8, which makes it simple. Since the bearing surface 8a which is supported in contact with each other is formed, when the positioning member 8 on the lower surface of each gearing head 5 contacts the stopper member 9 and is then connected to the processing unit 2, the upper surface of each gearing head 5 is connected to the processing unit 2. It has the effect of being able to be smoothly connected to the processing unit 2 without applying unreasonable force such as being pushed and tilting forward.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view of an example of a machine tool equipped with the proposed device, Figure 2 is a plan view thereof, and Figure 3 is a partially cutaway side view of an example of a machine tool equipped with the proposed device.
The figure is a partially cutaway side view of the operating state.
The figure is a basic plan view of its main parts, and FIG. 5 is a basic side view of its operating state. DESCRIPTION OF SYMBOLS 1... Base, 2... Processing unit, 3... Feeding mechanism, 4... Tool, 5... Gearing head, 6...
...Work table, 7... Work, 8... Positioning member, 9... Stopper member.

Claims (1)

[Scope of utility model registration request] A plurality of gearing heads 5 each having a tool 4 on the front surface are disposed around the outer periphery of a processing unit 2 which is provided on a base 1 so as to be freely fed forward via a feed mechanism 3. In a machine tool with an exchangeable gearing head, which is configured to be freely selectable and in which a selected head 5 is connected to the unit 2 by the advancement of the unit 2, a common head is provided on the lower surface of the gearing head 5 at a forward position on the base 1. 1
Each positioning member 8 that comes into contact with the stopper member 9
The contact surfaces of each positioning member 8 with the stopper member 9 are provided so as to be offset back and forth, and each positioning member 8 is provided with a contact surface with the stopper member 9.
1. A stopper device for a gearing head exchangeable machine tool, characterized in that a bearing surface 8a is formed to be supported in contact with the front surface of the machine tool.