TWI393601B - Automaticallly looking and positioning device for a starting hole of a wire cutting machine - Google Patents

Description

Wire cutting machine automatically finds the cutting hole positioning device

The invention relates to the technical field of a wire cutting machine, in particular to a wire cutting maneuvering machine for finding a cutting hole positioning device which can scan one by one before machining to check whether the cutting hole of the workpiece has a deviation phenomenon and a deviation position.

Wire cutting machine (line electric discharge machine) is one of the indispensable machining machines for precision metal cutting. It mainly uses the discharge between the brass wire and the workpiece through the workpiece. At this time, the brass wire will be like Wire saws generally cut the workpiece. At this time, if the NC program is used, the base of the wire cutter can be moved with the setting of the XY axis, and the shape designed by the program can be cut in a state where the error is extremely small.

Since it is necessary to wear a copper wire, it is necessary to drill a cutting hole for the copper wire to be processed (cut) before processing. However, the pre-drilling process may cause the offset of the drilled hole due to human error or the error of the drilling machine itself, so that the wire cutter can not perform the operation of laying the copper wire by itself. Manpower must be relied upon to manually eliminate the hole deviation and short circuit in order to carry out the subsequent processing procedures.

This will cause the entire automation work to stop. Therefore, how to use the device to scan one by one to check whether the cutting holes of the workpiece have deviation and deviation position before machining, so that the automatic threading operation of the wire cutting can be based on the found drilling. The hole position is threaded and automatically moves to the starting position of the NC program, which is the most important research and development target of the invention.

The main object of the present invention is to solve the above problems and to provide a wire cutting machine for automatically finding a cutting hole positioning device.

In order to achieve the above object, the present invention mainly comprises a cylinder fixed vertically on a wire cutter, wherein the cylinder body houses a piston rod, and the piston rod can be controlled by a control unit on the wire cutter. An axial reciprocating motion relative to the cylinder; and a light sensing unit mounted on the free end of the piston rod, the light sensing unit The utility model comprises a seat body fixed on the free end of the piston rod, wherein the base body is fixed with a light sensor coaxially corresponding to the piston rod, and the periphery of the seat body is fixed with an opening forwardly facing the dome cover The photo sensor uses the light beam emitted by the photo sensor to detect the offset of the corresponding cutting hole, and is electrically connected to the control unit of the wire cutting machine, and detects the cutting The offset of the hole is recorded in the control unit and compared for correction before processing. The light sensing unit further includes a shield horizontally disposed on the wire cutter, the shield protecting the light sensor during execution of the cutting operation.

With the combination of the above structures, the wire cutter can eliminate the problem of the cutting hole deviation and the short circuit without relying on manpower, so that all the addition projects can be executed in an automated manner.

The above and other objects and advantages of the present invention will be readily understood from

Of course, the invention may be varied on certain components, or in the arrangement of the components, but the selected embodiments are described in detail in the specification and their construction is shown in the drawings.

The invention relates to a wire cutting machine for automatically finding a cutting hole positioning device, as shown in the first figure, which mainly comprises a cylinder body (10) vertically fixed on the wire cutting machine, the cylinder body ( 10) The middle system houses a piston rod (11) which is axially reciprocable with respect to the cylinder block (10) by the control of a control unit (not shown) on the wire cutter. motion.

A light sensing unit (20) mounted at the free end of the piston rod (11). The light sensing unit (20) includes a seat body (21) fixed to a free end of the piston rod (11), and the seat body (21) is fixed with a light coaxially corresponding to the piston rod (11). a sensor (22), and the periphery of the base body (21) is fixed with an opening forward shimming shield (23), wherein the light sensor (22) is a laser light emitter and is electrically Connected to the control unit of the wire cutter. The light sensing unit (20) further includes a shield (24) horizontally pivoted on the wire cutter, the shield (24) being attached to the cutting operation Protect the photo sensor (22).

Referring to the second to third figures, when the present invention is used to detect and position the cut hole, the moving unit on the wire cutter is first used to move the cut hole below the present invention, so that the axial direction is corresponding. In the light sensor (22), the control unit is used to extend the piston rod (11) downward, and the edge of the shield (23) is pushed away from the pivoting shield (24). When the piston rod (11) extends to the limit, the light sensor (22) emits a light beam toward the corresponding cutting hole, thereby detecting the offset thereof, and recording it in the control unit of the wire cutter. If there are a plurality of cutting holes on the workpiece, the plurality of cutting holes are axially corresponding to the photo sensor (22) by using the moving unit on the wire cutting machine by repeating the foregoing steps, and the photo sensor is used. (22) The offset of each cut hole is detected one by one, and is sequentially recorded in the control unit of the wire cutting machine.

When all the cutting holes are detected, the piston rod (11) is retracted into the cylinder (10), and the light sensor (22) is returned to the shield (23) and the shield (24). The state of protection. At this time, the control unit of the wire cutting machine starts to compare the offset detected by the light sensor (22) with the original cutting point set by the program, and corrects itself when threading. In this way, the wire cutter can eliminate the problem of cutting hole deviation and short circuit without relying on manpower, so that all machining programs can be executed in an automated manner.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

From the above detailed description, those skilled in the art can understand that the present invention can achieve the foregoing objects, and no similar publications are found in similar processes or products, which have been in compliance with the provisions of the Patent Law, and have been patented according to law. Application.

10‧‧‧Cylinder

11‧‧‧ piston rod

20‧‧‧Light sensing unit

21‧‧‧ body

22‧‧‧Light sensor

23‧‧‧Shape guard

24‧‧‧ Guard

The first figure is a perspective view of the present invention.

The second figure is a front view of the present invention when the action is completed/not activated.

The third figure is a schematic diagram of the action of the present invention for detecting the positioning and cutting holes.

10‧‧‧Cylinder

11‧‧‧ piston rod

20‧‧‧Light sensing unit

21‧‧‧ body

22‧‧‧Light sensor

23‧‧‧Shape guard

24‧‧‧ Guard

Claims (2)

A wire cutting machine automatically finds a cutting hole positioning device, which mainly comprises: a cylinder body vertically fixed on the wire cutting machine, wherein the cylinder body houses a piston rod, and the control unit on the wire cutting machine Controlling, the piston rod is axially reciprocable relative to the cylinder; and a light sensing unit mounted on the free end of the piston rod, the light sensing unit including a fixed end of the piston rod a seat body, the base body is fixed with a light sensor coaxially corresponding to the piston rod, and the periphery of the base body is fixed with an open front dome guard, the light sensing unit further comprises a horizontal a guard plate pivotally mounted on the wire cutter for protecting the light sensor during the cutting operation; when the piston rod extends downward, the light sensing unit fixed at the free end thereof is also Move downward to push the edge of the shield away from the pivoting guard. When the piston rod extends to the limit, the light sensor can use the beam emitted by the light sensor to detect the offset of the corresponding cutting hole. And electrically connected to the control unit of the wire cutter The offset of the cut hole is recorded in the control unit, and the comparison is corrected before processing; when all the cutting holes are detected, the piston rod is retracted into the cylinder to make the light sensing The device returns to the state protected by the shield and the guard. The wire cutter according to claim 1 of the patent application automatically finds a cutting hole positioning device, wherein the light sensor is a laser light emitter.