JPH04141301A - Y-axis travelling device of turning center - Google Patents

Abstract

PURPOSE:To increase stiffness for torque, and to make a device compact by moving a turning center having Y-axis along plural guides fixed to a side surface and an adjacent surface of a base frame. CONSTITUTION:On a base frame 1, a main spindle head 2 is provided so as to travel along a Z-axis rail. On the main spindle head 2, a main spindle 3 is supported rotatably. In addition, on a side surface of the base frame 1, a fixed saddle 5 is arranged, and on the fixed saddle 5, roller support guides 6 are tightly fixed in the direction of Y-axis. Furthermore, on the side surface of the base frame 1, a sliding guide 7 is tightly fixed so as to be parallel to the guide 6. A movable slide 8 is arranged slidably in the direction of Y-axis along the guide 6 and the sliding guide 7. A tool head 9 can move smoothly on a X-guide 10. A turret head 11 is provided on the X-Y plane of the tool head 9. To the outer periphery of the turret head 11, a cutting tool 12 or a rotary tool 13 is attached. Moreover, a clamping mechanism is attached to the guide 7.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a Y-axis moving mechanism for a turning center in which a turret is movable in the Y-axis direction.

[Conventional technology]

For example, Japanese Patent Application Laid-Open No. 1-234101 discloses a mechanism that secures a large Y-axis movement stroke by using a linear guide in a mechanism that moves a tool relative to the main shaft.
As described in Japanese Patent Application Laid-Open No. 62-282802, the base 2
0, a first movable saddle 21 is provided movably in the X-axis direction, a second movable saddle 22 is provided on the first movable saddle 21 so as to be movable in the Y-axis direction, and further, the second movable saddle 2
It is known that the saddles 21, 22, and 23 are slidably connected to each other, such as a third movable saddle 23 provided on the second movable saddle 23 so as to be movable in two axial directions.

[Problem to be solved by the invention]

In the above mechanism, each movable saddle is fixed to one plane or moves along a near guide, so it is weak in supporting force against rotational moment in a plane including two arbitrary directions.
This had the disadvantage of increasing the size of the device.

[Means to solve the problem]

The present invention is a moving mechanism in which at least one headstock is movable in two directions and a turret is movable only in the X-axis and Y-axis directions, and the structure includes a saddle fixed to the side of the base. The turret that can be rotated around the Z axis is
A movable saddle provided to be movable in the axial direction is provided so as to be movable in the Y-axis direction via a plurality of guides arranged between the movable saddle and the base, and between the movable saddle and the fixed saddle, Another feature is that a clamp mechanism is attached to the guide.

[For use]

At least one headstock is provided movably in two axes, and the turret is movable in the X-axis and Y-axis directions, so that the turret is movable in the X-axis, Y-axis, and Y-axis relative to the headstock.
It is possible to move in the X-axis direction, one saddle is fixed, and a plurality of guides are interposed, so that high rigidity can be ensured. Further, by providing a clamp mechanism, stability can also be improved.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of a turning center, in which a base l is provided movably by a motor and a ball screw (not shown) along a two-axis rail 4 laid in the X-axis direction. A headstock 2 is provided, and the headstock 2 includes:
A main shaft 3 is rotatably supported in two axial directions. Further, a fixed saddle 5 is attached to the side surface of the base 1, and a gyroscope supported by rolling elements is closely fixed to the fixed saddle 5 in the Y-axis direction. Also, on the side surface of the base l, a rectilinear sliding guide 7 parallel to the guide 6 and spaced at a constant interval is closely fixed. The movable saddle 8 is provided so as to be slidable along the guide 6 and the sliding guide 7 in the Y-axis direction. The guide 6 and sliding guide 7 contact adjacent surfaces parallel to the Y-axis of the movable saddle 8, and the distance between the guides is preferably large because this increases rigidity against rotational moment j. The tool rest 9 is movable on an X-axis guide 10 carved in the X-axis direction on the upper surface of the movable saddle 8 by an indexing motor and a hole screw (not shown). Turret 1
1 is provided on the XY plane of the tool rest 9, is rotatably supported by an indexing motor (not shown) built into the tool rest 9, and is rotated by a cutting tool 12 or a motor (not shown) on the outer periphery of the turret 11. A rotary tool 13 is attached. FIG. 2 is an xz plan view of the sliding guide 7. FIG. The movable saddle 8 that slides on the sliding guide 7 is connected to the cylinder 1
4 and a plurality of pistons 1515, and during cutting, hydraulic oil pressurized by a hydraulic pump (not shown) presses the piston 15 of the cylinder 14 to firmly grip the sliding guide 7. In this example, a sliding guide is fixed to the base and a hydraulic clamping mechanism is provided to the movable saddle, but it is also possible to fix the sliding guide to the movable saddle and attach a motor-driven clamping mechanism to the bed side. You can.

【Effect of the invention】

The Y-axis turning center configured as described above moves along a plurality of guides fixed to one side of the base and another side adjacent to it, so it is resistant to rotational moment and has a movable saddle. By keeping the balance with the turret,
Can be made into a compact structure.

[Brief explanation of drawings]

The drawings show the Y-axis moving mechanism of the turning center of the present invention, FIG. 1 is an explanatory diagram showing a perspective view of the turning center, FIG. 2 is a plan view of the cylinder and sliding guide of the movable saddle, and FIG. 3 and FIG. 4 are explanatory diagrams of the conventional technology. l... Base, 2... Headstock, 3... Main spindle, 4... 2-axis rail, 5... Fixed saddle, 6... Guide, 7... Sliding guide, 8... Movable saddle, 9... Turret, 10...X-axis guide, 11...Turret, 12...Cutting tool, 13
・・Rotary tool, 14・・Cylinder, 15・・Piston,
2O...Base, 21...First movable saddle, 22...Second movable saddle, 23...Third movable saddle.

Claims (1)

[Claims] 1. At least one headstock is provided on a base so as to be movable in the Z direction, and a fixed saddle is attached to the side of the base, and a turret that is rotatable around the Z axis is provided. A movable saddle provided movably in the X-axis direction is provided movably in the Y-axis direction via a plurality of guides arranged between the movable saddle and the base, and between the movable saddle and the fixed saddle. Y-axis moving mechanism 2 for a turning center comprising: A Y-axis moving mechanism for a turning center according to claim 1, wherein a clamp mechanism is attached to the guide.