JPH0337842Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a machine tool, and particularly to a device for continuous machining of tapered holes and end faces.

(Prior art) In the past, the machining of tapered holes and end faces was usually carried out using a simultaneous two-axis NC machine tool or a machine tool using a full-form cutting tool, but in the former case, the mechanical equipment became complicated. And it became expensive. On the other hand, in the latter case, although the device is relatively simple, it has drawbacks such as poor machined surface roughness.

(Problem to be solved by the invention) The purpose of the invention is to create a tapered hole that is cheaper than a simultaneous 2-axis NC machine tool and provides better machined surface roughness than a machine tool that uses a full-form tool. and to provide an end face continuous processing device.

(Means for Solving the Problems) Therefore, the present invention provides a cutting feed rod that feeds a cutter in the radial direction supported by a rotating facing spindle unit, and a facing spindle unit that feeds the cutter in the axial direction. The feed and therefore the axial feed of the table are linked when drilling a tapered hole by an arm that is pivotally supported by the table, so that the cutting edge of the cutter is combined in the radial and depth directions to drill a tapered hole. At the same time, when machining the end face, the axial feed of the table is regulated by a stopper provided on the main body that supports the table, the arm is stopped and the interlocking is released, and the cutter is fed only in the radial direction to perform end face machining, that is, facing. This is an apparatus for continuous processing of tapered holes and end faces.

(Operation and Effect of the Invention) With this configuration, in this device, a simple mechanical interlocking device is operated so that the arm is interlocked during taper hole processing, and the interlocking is released by keeping the arm stationary during end face processing. Therefore, it has a simple structure and is cheaper than the NC machine tools mentioned above, and if a cutting tool is used as a cutter, it can perform finer and more accurate machining than a machine tool that uses a full-form tool, so it can obtain good machined surface roughness. .

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the state of the apparatus based on the present invention when machining a taper hole. A table 13 is supported on the main body 14 in a reciprocating manner, and the table 1
3 is reciprocated by a hydraulic cylinder 12 which is a table reciprocating drive device provided in the main body 14. A feed unit 13' and a facing feed device 18 are fixed to the table 13. The feed unit 13' rotatably supports a facing spindle unit 3, which is rotated by a motor 5 fixed thereto. A slider 2 is supported at the end of the facing spindle unit 3 so as to be movable in the radial direction, and the slider 2 fixes a cutting tool 1 which is a cutter projecting outward in the axial direction. The slider 2 is moved radially by teeth 22' meshing with a gear 21 rotatably supported on the unit 3;
The feed rod 4, which is supported to be axially movable and to rotate together with the unit 3 in this embodiment, engages with teeth 22 cut in the end of the feed rod 4, and when the feed rod 4 moves in the axial direction, the slider 2 is adapted to move in the radial direction. The axial movement of the feed rod 4 is effected by a facing feed device 18 fixed to the table 13. That is, the facing feed device 18
A motor 8 fixed to rotates a feed screw drive gear 7 so that the inner circumferential spiral groove of the gear 7 meshes with the feed screw 9. 6 is a rotary joint that prevents the force in the rotational direction of the feed screw 9 from being applied to the feed rod. An arm 10 is pivotally supported on the table 13 by a pivot 10', one end of the arm 10 is engageable with an arm stopper 11 fixed to the main body 14, and the other end is connected to the rotary joint 6 and the feed screw 9. The table 13 is moved by engaging with the other end of the feed rod 4 through the forward movement of the feed rod 4. A stopper 16 is provided at the left end of the main body 14 to restrict the forward movement of the lower end 15 of the table to which the rod of the cylinder 12 is connected.

Next, to explain the operating state, FIG. 1 shows a state in which a tapered hole 17' of a workpiece 17 fixed to a device (not shown) is being machined, and the motor 5 rotates the cutting tool 1 via the facing spindle unit 3. The facing feed device 18
The motor 8 rotates the feed screw drive gear 7 to move the feed screw 9 axially to the left in the direction of the arrow as seen in the figure. Therefore, the feed rod 4 connected by the rotary joint 6 is moved axially to the left without rotating. A table 13 is attached to the cylinder 12 provided in the main body 14 by following the feed screw 9 via the arm 10.
Therefore, the arm 10 presses one end against the arm stopper 11 and the other end pushes the feed screw 9, and moves axially to the left together with the feed screw 9. On the other hand, the teeth 22 of the feed rod 4 rotate the gear 21 and move the slider 2 and the cutting tool 1 radially inward via the teeth 22', so that the cutting tool 1 is fed diagonally with the resultant movement.
When this is rotated by the motor 5, a tapered hole 17' can be formed in the workpiece 17. Further, when the facing feed is continued by the motor 8, the lower end of the table 15
hits the stopper 16, and the table 13, facing feed device 18 and feed unit 1
3' stops the axial movement. However, as shown in FIG. 2, the facing feed continues and the cutting surface of the workpiece 17 becomes a flat end surface 17'', allowing continuous machining of the tapered surface 17' and the flat surface 17''.
When processing a flat surface 17'', the right end of the feed screw 9 is separated from the arm 10.

It is clear that this embodiment exhibits the effects of the present invention described above.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing an embodiment of the device of the present invention, showing the state when drilling a taper hole, and FIG.
The state of the device shown in the figure during flat processing is shown. 1...Bite (cutter), 2...Slider,
3... Facing spindle unit, 4...
Feed rod, 9...Feed screw, 10...Arm, 11
... Arm stopper, 12 ... Hydraulic cylinder (drive device), 13 ... Table, 14 ... Main body,
15... lower end of table, 16... stopper, 18... facing feeding device, 13'...
Feed unit, 21...gear.

Claims (1)

[Scope of utility model registration request] A table reciprocating drive device provided on the main body, a table supported reciprocally on the main body, a facing spindle unit rotatably supported on a feed unit fixed to the table,
a slider that fixes a cutter that is movably supported in the radial direction at the end of the facing spindle unit and projects outward in the axial direction, and one end of the slider is engaged with a gear that moves the slider to move the cutter in the axial direction. a cutting feed rod supported by the facing spindle unit so as to drive the facing spindle unit; a facing feed device fixed to the table so as to drive the feed rod in the axial direction; and an intermediate portion thereof pivotally supported by the table. one end thereof is engageable with an arm stopper attached to the main body, and the other end is engaged with the other end of the feed rod so that the table is moved following the forward movement of the feed rod. 1. A continuous tapered hole and end face machining device, comprising: an arm disposed on the main body; and a stopper provided on the main body to restrict movement of the drive device in the forward direction.