JPH0448579B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an arc feed device for an optical profile grinder.

Technical background of the invention and its problems Conventionally, when machining an arc using an optical profile grinder, a manual handle that moves the grinding wheel head in the Y-axis direction and a manual handle that moves the grinding wheel head in the X-axis direction are operated at the same time. Or, it is common to use a numerical control device to automatically feed the grinding wheel head according to pre-programmed values. However, when operating two manual handles at the same time, the operator must be highly skilled, and furthermore, because the operator easily gets tired, it is difficult to work continuously for long periods of time while maintaining a certain level of machining accuracy. Can not. Further, in the case of a numerical control device, the movement of the center of the grinding wheel head is generally controlled, and it is not possible to cope with wear or changes in shape of the circumferential surface.

OBJECTS OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide an arc feed device for an optical copy grinder that can accurately grind an arc surface with simple operation.

Summary of the Invention The present invention includes a display section having a display surface that displays the grinding surface of a workpiece, and a manual handle that moves the grinding wheel head relative to the workpiece in the X-axis direction via a servo motor. In an optical profile grinding machine equipped with a manual handle for feeding in the Y-axis direction, an arc surface grinding mode setting means for setting a grinding mode for an arc surface, a control terminal device for inputting arc data of an arbitrary shape, and an input device. a manual pulse generator that independently generates pulses with each rotation when the manual handle is manually operated; a calculation unit that calculates an operation signal for the other manual handle based on data from the manual pulse generator and contents stored in the storage means; and an operation signal for the one manual handle and a signal from the calculation unit. and a control section that drives and controls servo motors in the X-axis direction and Y-axis direction that drive the grinding wheel head. Therefore, in addition to the function of performing optical copy machining using two manual handles while looking at the grinding surface of the workpiece displayed on the display, it is also possible to perform optical copy machining similar to the above-mentioned optical copy machining by operating one manual handle. function can be obtained. That is, in the circular arc surface grinding mode, input the circular arc data to be machined using the control terminal and store the data in the storage means,
In this state, when one of the manual handles in the X-ray or Y-axis direction is operated, the rotation angle of the manual handle is taken out as a signal from the manual pulse generator, and the servo motor is driven, and that signal and the previously input circular arc Based on the data, the data is converted into servo motor drive control data in the calculation section, and the control section drives the other servo motor to obtain the same operation as when performing copying.

Embodiment of the Invention An embodiment of the present invention will be described based on the drawings.
It consists of a grinding section 1 having a table (not shown) to be placed on the workpiece, a grinding wheel head (not shown), etc., an operation section main body 3 equipped with an operation panel 2, and a screen 4 for projecting the grinding surface of the workpiece. An optical copy grinder 5 is provided. The operation section main body 3 is provided with a manual handle 6 that moves the grindstone head in the X-axis direction by a rotational operation, and a manual handle 7 that moves the grindstone head in the Y-axis direction by a similar rotational operation.

On the operation panel 2, mode selection switches 8, 9, 10, and 11 are arranged on the upper right side. Switch 8 is an arc surface grinding mode setting means used during manual feeding, and switch 9
is used for diagonal or circular feed based on input data, switch 10 is used when manual feed is intervened in the middle of diagonal or circular feed based on input data, and switch 11 is used for diagonal or circular feed. This is used when entering data. Changeover switches 12, 13, and 14 are arranged on the upper left side of the operation panel 2. The changeover switch 12 is the switch 8 or the switch 10.
When selecting and feeding using the manual handles 6 and 7, the feed is directed downward, and when jog feed is performed, the feed is directed upward. Changeover switch 13
is directed downward when the switch 9 is selected and the manual handles 6 and 7 are used for feeding;
When automatically feeding by NC control, it should face upward. The changeover switch 14 is directed downward when the switch 9 is selected to feed a straight section, and is directed upward when the switch 9 is selected to feed a circular section. Furthermore, the operation panel 2 includes an operation lever 15 for jog feed, a feed speed adjustment knob 16 for jog feed and automatic feed, a switch 17 for turning on/off grindstone shaft rotation, a switch 18 for turning on/off stroke operation, and the switch 9. A switch 19 and the like are provided for specifying the direction of movement when selecting and automatically feeding.

The manual handle 6 is an X-axis manual pulse generator 2
0, the manual handle 7 is connected to a Y-axis manual pulse generator 21, and these manual pulse generators 20, 21 are connected to a handle signal controller 22. This handle signal control section 22 is
It is comprised of a pulse distribution section 23, a manual pulse output section 24, an oblique/circular data transmission/reception section 25, an axis switching section 26, a function switching section 27, and the like. next,
A control terminal device 30 for inputting diagonal/circular data including a CRT 28 and a keyboard 29 is provided, and the control terminal device 30 and the steering wheel signal control section 22 are equipped with a servo control section and a numerical control section. 31. A servo motor 32 that sends the grinding wheel head in the X-axis direction is connected to this control section 31 on the one hand, and a servo motor 33 that sends the grinding wheel head in the Y-axis direction is connected via a servo control section 34 on the other hand. There is.

In such a configuration, when performing diagonal or circular arc grinding with this optical copy grinder 5,
The first method involves operating the two manual handles 6 and 7 at the same time to move the grinding wheel head along any arcuate surface or slope; the second method involves operating the two manual handles 6 and 7 at the same time. There is one that automatically moves the grinding wheel head based on circular arc data or oblique angle data that is input without any operation. Furthermore, as a third method, one manual handle 7 is explained below.
There are some things that are done by operating a chisel.

When grinding an arcuate surface using the third method, select switch 9 on the operation panel 2, set the changeover switch 13 downward, set the changeover switch 14 upward, and select one of the switches 19. do. Then, arbitrary circular arc data is inputted, and this data is stored in a storage means (not shown). When one of the manual handles 7 is rotated after the power is turned on, a calculation based on the pulse signal generated by the rotation of the manual handle 7 and the input arc data is performed in the calculation unit provided in the control unit 31, and the servo motor 32 , 33 are driven at the same time, and the grinding wheel head moves according to the input arc data. The feed speed of the grinding wheel head is proportional to the rotation speed of the manual handle 7, and the operator
Grinding can be carried out at the optimum feed rate while monitoring.
In addition, the precision ball screw can be rotated by simultaneously driving the X-axis feed and Y-axis feed servo motors 32 and 33 in units of 0.1 micron per pulse by operating a single manual handle 7, so it is possible to rotate the precision ball screw regardless of the operator's skill. A smooth grinding surface can be obtained without causing any fatigue to the operator. Furthermore, since it is possible to retreat the grinding wheel head by reversing the manual handle 7, this is convenient when correcting errors between the enlarged view pasted on the screen 4 and the grinding surface projected on the screen 4. .

Next, the operation will be explained based on the flowchart shown in FIG. After the power is turned on, it is determined whether or not data has been input, and if no data has been input, data is input. When the data to be executed is selected from among the input data, the grinding mode is set based on the data, and a transmission request to the handle signal control section 22 is made and the direction of rotation is checked. Next, the number of pulses accompanying the rotation of the manual handle 7 is counted, and the count value is converted into a positive number byte and transferred to the control unit 31. Then, based on the calculation within the control unit 31, the servo motor 3
An execution command is issued to 2 and 33. Coordinate status data is displayed on the CRT 28 of the control terminal 30. Then, it is determined whether or not the grinding has been completed based on the selected data, and if the grinding has not been completed, a transmission request is sent to the handle signal control unit 22 and the subsequent steps are repeated until the execution is completed. When the execution is completed, it is determined whether or not to continue grinding based on the next data, and if it is to continue, it is determined whether the first data has been input, and the same operation is performed, and when it is not to continue, the same operation is performed. The work is finally completed.

Effects of the Invention Since the present invention is constructed as described above, it is only necessary to operate one manual handle when grinding a circular arc surface, and by operating this manual handle, the grinding wheel head is adjusted according to the circular arc data inputted in advance. It is possible to perform accurate grinding without requiring operator skill, and the feed speed of the grinding wheel head can be adjusted arbitrarily, even when the hardness of the workpiece is different. This has the advantage of being able to perform more accurate grinding by providing a corresponding feed rate.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a simplified overall front view, Fig. 2 is an enlarged view of the operation panel, Fig. 3 is a block diagram, and Fig. 4 shows the operating state. It is a flowchart. 4...Display unit, 6-7...Manual handle, 9...Circular surface grinding mode setting means, 20, 21...Manual pulse generator, 30...Control terminal device, 31...Control unit, 3
2, 33... Servo motor.

Claims (1)

[Claims] 1. A display unit having a display surface that displays the grinding surface of the workpiece is provided, and a manual handle that moves the grinding wheel head relative to the workpiece in the X-axis direction and a Y-axis direction via servo motors, respectively. In an optical profile grinding machine equipped with a manual handle, an arc surface grinding mode setting means for setting a grinding mode for an arc surface, a control terminal for inputting arc data of an arbitrary shape, and a memory for storing input arc data. a manual pulse generator that independently generates a pulse with each rotation when the manual handle is manually operated; and a manual pulse generator that generates a pulse by operating one of the manual handles in an arcuate surface grinding mode. a calculation unit that calculates an operation signal for the other manual handle based on the data stored in the storage means and the data stored in the storage means; and a calculation unit that drives the grinding wheel head based on the operation signal of the one manual handle and the signal from the calculation unit. An arc feeding device for an optical profile grinding machine, comprising a control section that drives and controls servo motors in the X-axis direction and Y-axis direction.