JPH05138401A - Five shafts driving device for processing machine - Google Patents

Abstract

PURPOSE:To provide a driving device for a processing machine capable of forming an optionally shaped projection at an optional position of the travel surface of a tape accurately and stably when it is used especially for processing of a lower drum used for a recording-reproducing equipment. CONSTITUTION:A cutter mount 19 mounted on a Y axis sliding block 17 is made capable of sliding, and the cutter mount 19 is driven by a servo motor M4. A slide part 20 is placed between the mount 19 and a feed shaft 21, and its one side is fixed to the cutter mount 19, and the other side is fixed to the slide feed shaft 21. A main spindle 10, a Z axis sliding block 13, the Y axis sliding block 17, and the servo motor M4 are controlled by a control device 23, to be processed in optional shapes.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] In VTR / DAT lower drums, minute projections are formed on the tape running surface.
The shape and position accuracy of these protrusions are important positions for high density recording.

The present invention relates to a drive device capable of forming a free-form projection at such an arbitrary position by cutting, and is particularly useful for machining a lower drum.

[0003]

2. Description of the Related Art Conventional VTR / DAT lower drums also have minute projections formed on the tape running surface. As the method of forming the protrusions, there are a method of remaining uncut by cutting and a method of utilizing plastic deformation.

[0004]

In VTR and DAT lower drums, minute projections are formed on the tape running surface. In order to form this protrusion, there are a method of leaving uncut by cutting and a method of utilizing plastic deformation.

The uncut portion method has a limit in processing and is limited to the tape exit side on the tape running surface, and the plastic deformation method deteriorates the perfect circular shape of the tape running surface around the protrusion.

In view of the above problems, the present invention can cut free-form projections at arbitrary positions by NC control on the tape running surface, particularly when used for processing lower drums used in recording / reproducing equipment. An object of the present invention is to provide a driving device for a processing machine that can be formed, has excellent processing accuracy, and can obtain a product of stable quality.

[0007]

In order to solve the above-mentioned problems, the apparatus of the present invention comprises a spindle motor, a carriage feed shaft motor, a lateral feed shaft motor, a second lateral feed shaft motor, and a tool post feed shaft motor. And a second traverse shaft motor for causing the second transverse feed shaft motor to move back and forth according to a predetermined projection shape to be machined on the workpiece by using the control device. The shaft motor, the tool post feed shaft motor, and the second lateral feed shaft motor are controlled to form an arbitrary shape.

[0008]

With the above structure, it is possible to easily form free-form projections at arbitrary positions by cutting on the tape running surface of the lower drum used for recording / reproducing equipment, and the processing accuracy is excellent and stable. Can be created with quality.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a lower drum to be processed by the apparatus of this embodiment, and FIG. 2 is a configuration diagram of the apparatus of this embodiment.

In FIG. 2, reference numeral 10 is a spindle with a built-in motor / encoder, and 11 is a chuck that rotates together with the spindle 10. The lower drum 1 is held by the pawls 12 attached to the chuck 11. The encoder built in the main shaft 10 generates a pulse each time it rotates, and detects the rotation angle of the lower drum 1.

A Z-axis slide stand 13 is moved by a Z-axis slide feed shaft 14 driven by a Z-axis servomotor M1. 15 is an X-axis slide stand, and a Z-axis slide stand 1
It is installed on the No. 3 and is moved by the X-axis slide feed shaft 16 driven by the X-axis servo motor M2. 17
Is a Y-axis slide base, which is installed on the X-axis slide base 15 and is moved by a Y-axis slide feed shaft 18 driven by a Y-axis servomotor M3. Reference numeral 19 denotes a blade mount, which is installed on the Y-axis slide base 17. Turret 1
9 is configured to slide. The tool rest 19 is moved by a slide feed shaft 21 driven by a servo motor M4. A slide component 20 is arranged between the tool rest 19 and the slide feed shaft 21, and one of them is fixed to the tool rest 19,
The other side is fixed to the slide feed shaft 21.

A control device 23 controls the drive of the main shaft 10, the Z-axis servomotor M1, the X-axis servomotor M2, the Y-axis servomotor M3 and the protrusion forming servomotor M4.

A cutting tool 22 is set on the tool rest 19 and has a shape for forming the tape running surface 2 and the lead surface 3 on the lower drum 1.

NC data for driving the spindle 10, the Z-axis servomotor M1, the Y-axis servomotor M3, and the actuator 20 simultaneously for four axes is created by the CAM system.

Simultaneous 4-axis NC data created by the CAM system is input to the controller 23 to form a free-form projection 4 at an arbitrary position on the tape running surface 2 by cutting and also to create a lead surface 3. .

[0017]

Since the device of the present invention is constructed as described above, it is possible to easily form a free-form projection by cutting with high accuracy at an arbitrary position. Moreover, since it can be produced with stable quality, it can be applied to mass production.

When the lower drum is actually processed by using the apparatus of the present invention and this lower drum is used for the VTR, the influence of the tape fluttering and the fluttering on the image is suppressed, and a good result for reducing the tape rattling sound is obtained. Was obtained.

[Brief description of drawings]

FIG. 1 is a front view of a lower drum to be processed by an apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Lower drum 2 Tape running surface 3 Lead surface 4 Protrusion 10 Spindle 11 Chuck 12 Claw 13 Z-axis slide stand 14 Z-axis slide feed axis M1 Z-axis servo motor 15 X-axis slide stand 16 X-axis slide feed axis M2 X-axis servo motor 17 Y-axis slide base 18 Y-axis slide feed shaft M3 Y-axis servo motor 19 Slide type tool post 20 Slide parts 21 Slide feed shaft M4 Protrusion forming servo motor 22 Cutting tool 23 Control device

Claims (1)

[Claims] 1. A spindle for rotating a workpiece, a spindle motor for driving the spindle, a carriage, a carriage feed shaft for driving the carriage and a carriage feed motor, and a transverse carriage.
A horizontal feed shaft and a horizontal feed shaft motor which are installed on the carriage and drive the horizontal feed base, a second horizontal feed base, and a horizontal feed shaft which is installed on the horizontal feed base and drives the horizontal feed base. And a horizontal feed shaft motor, a tool post having a tool attached thereto, a tool post feed shaft and a tool post feed shaft motor which are installed on the horizontal feed plate and drive the tool post, the main spindle motor, the reciprocating feed A 5-axis driving device for a processing machine, comprising a control device for controlling a shaft motor, the lateral feed shaft motor, the second lateral feed shaft motor, and the tool post feed shaft motor.