JPH0214884Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a turret mounting device for a machine tool such as a turret lathe.

[Prior Art] In a turret lathe, etc., the turret is attached to the turret mounting shaft by providing a screw at the tip of the turret mounting shaft, inserting the turret mounting hole into the turret mounting shaft, and inserting the turret from the outside of the turret. A nut was screwed into the threaded part.

[Problems to be Solved by the Invention] In the technique described above, the turret and the mounting shaft are fixed using nuts and screws, which has the disadvantage that the screws tend to loosen, resulting in incomplete fixation. For this reason,
Conventionally, the turret and nut are integrally fixed via pins or bolts by physical matching.

This invention was developed in view of the above-mentioned problems, and is intended to attach the turret to the mounting shaft without using screws or nuts.

[Means for solving the problem] This invention provides an annular groove around the circumference of a turret mounting shaft that is pivotally supported on a turret support base, and a split collar to prevent the turret from coming off when attached to this turret mounting shaft. A holding member is attached to the turret to fit into the annular groove and prevent the split collar from coming off from the annular groove.

[Function of the invention] The turret can be rotated around the mounting shaft with respect to the turret support base to determine the rotational position of the turret. It is kept in place by the collar. When removing this turret from the mounting shaft,
This is done by removing the split collar from the annular groove.

[Effects of the invention] In this way, the turret is prevented from coming off from the turret mounting shaft by the split collar, so there is no loosening like that caused by screws and nuts, and the mounting shaft has an annular groove. Therefore, assembly is easy.

[Example] An example of the drawings will be described. A chuck 5 is provided at one end of the lathe table 1 to rotate while holding the material 3, and a turret mounting base 7 is provided at the other end so as to be movable in the direction of the chuck. There is. This turret mounting base 7 has a screw shaft 9 installed horizontally.
The screw shaft 9 is rotationally controlled by a motor 11.

A turret mounting shaft 13 is provided on the turret mounting base 7 so as to be rotatable horizontally in the left-right direction.
3 is provided with a flange 15, and this flange 1
5 is locked in the shaft hole of the turret mounting base 7 so as not to move in the axial direction.

The turret mounting shaft 13 has a piston 17 on its outer periphery.
The piston 17 is fitted into a cylinder 19 provided on the outer periphery of the piston 17, and the cylinder 19 is attached to the side surface of the turret mounting base 7 with bolts or the like. Fixed. Furthermore, a hydraulic pump supplies and discharges hydraulic pressure to one side of the piston 17 in the cylinder 19 and the other side thereof to control the movement of the piston 17 in the axial direction. Boss portions 2 are provided on both sides of the piston 17.
1 and 23 are integrally provided, and the boss portion 23 on one side
is set in such a manner that it abuts on the flange 15.

A spline 25 is provided at one end of the mounting shaft 13, and an annular groove 27 is provided along the circumferential direction of the shaft. A spline boss 29 is fitted into this spline 25 portion, and the turret 31 is fitted onto the outer periphery of this spline boss 29 and fixed by tightening with bolts or the like. The rear end of the spline boss 29 is configured to come into contact with the end of the boss portion 21 of the piston 17, and the front end of the spline boss 29 has a plurality of arc-shaped split collars that fit into the annular groove 27. 33 so that it can be locked.

A toothed portion 35 is provided on the rear end surface of the turret 31, and the toothed portion 35 is configured to mesh with a toothed portion 37 provided on the end surface of the turret mount 7 on the outer periphery of the cylinder 19, so that the rotation angle of the turret 31 can be changed. .

In order to prevent the split collar 33 from coming off from the annular groove 27 of the mounting shaft 13 and hold it, a cap 39 as a holding member is fitted onto the peripheral surface of the split collar 33, and this cap 39 is attached to the spline boss 2.
9 is tightened with a bolt 41 at the end. This cap 39 prevents the split collar 33 from coming off the annular groove 27.

Note that the turret 31 is equipped with a plurality of tools.

Next, the operation of the above embodiment will be explained.

When the turret 31 is rotated to select a tool or the like, when hydraulic pressure is applied to one chamber of the cylinder 19, the piston 17 is pushed to the left and the spline boss 29 is pushed. The front end of this spline boss 29 pushes the split collar 33, and the turret 31 is moved to the left together with the mounting shaft 13. As a result, the toothed portion 35 of the turret 31 is separated from the toothed portion 37 of the turret mounting base 7, and the turret 31 becomes freely pivotable about the turret mounting shaft 13.

When the tool etc. can be selected and positioned by rotating the turret 31, hydraulic pressure is sent to the other side of the cylinder 19 and the piston 17 is moved to the right.
The turret 31 is moved to the right by an operation opposite to the above, the teeth 35 mesh with the teeth 37, and the turret 31 is fixed to the turret mount 7.

When removing the turret 31 from the mounting shaft 13, the split collar 33 can be removed to the outer periphery by removing the bolt 41 and removing the cap 39. When the split collar 33 is removed from the annular groove 27, the turret 31 can be removed together with the spline boss 29.

That is, according to the above configuration, the annular groove 27 for the split collar 33, the hole for the bolt 41, etc. can be processed in advance. Therefore, there is no need for the conventional process of fixing the nut and turret together, making the process and assembly easy, and the turret can be securely fixed to the mounting shaft.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view, FIG. 2 is a partial side sectional view, FIG. 3 is a partial front view, and FIG. 4 is a side view thereof. 7... Turret support base, 13... Turret mounting shaft, 27... Annular groove, 31... Turret, 33...
...Discount color.

Claims (1)

[Scope of utility model registration request] An annular groove is provided on the periphery of the turret mounting shaft that is pivotally supported on the turret support base, and a split collar is provided to prevent the turret from slipping out when attached to the turret mounting shaft.
A turret mounting device characterized in that a holding member is attached to the turret to fit into the annular groove and prevent the split collar from coming off from the annular groove.