KR101838884B1 - Automatic cutting device of surface grinding machine - Google Patents

Abstract

The present invention relates to an automatic cutting device of a surface grinding machine, which is capable of automatically transporting a grinding unit mounted on a transfer table of the surface grinding machine and controlling the grinding of the grinding unit. A control means additionally includes a signal generation unit which comprises: an installation bracket coupled to a direction determining block; first and second limit switches coupled to the installation bracket to allow contact units to face each other; and a contact bracket coupled to a direction control lever to selectively come into contact with the contact units of the first limit switch or the second limit switch according to an operation of the direction control lever, so as to generate a signal to the first and second limit switches. A grinding handle unit additionally includes a cutting unit which comprises: a servo motor installed in a main body and generating power according to the signal of the first and second limit switches; and a power transmission means installed between the grinding handle unit and the servo motor and transmitting the power of the servo motor to the grinding handle unit, such that it is possible to automatically transport the grinding unit and control the grinding of the same.

Description

Technical Field [0001] The present invention relates to an automatic cutting device for surface grinding machine,

The present invention relates to an automatic infeed apparatus for a surface grinding machine, and more particularly, to a servomotor operated by a signal generated by contact between a contact bracket and first and second limit switches during operation of a directional control lever, So that not only the operator can handle a plurality of surface grinding machines at the same time but also the point at which the pin coupled to the graduation wheel comes into contact with the limiting protrusion of the manual insertion stopper The touch bracket and the stop sensor are brought into contact with each other, so that the zero point adjustment can be easily performed even when the grinding portion is automatically cut by the automatic feed control. The infeed amount can be adjusted by using the scale wheel formed on the handle of the cut- With the infeed selection switch configured on the operation panel, the infeed amount per one feed of the feed table And then selecting whether or not to control the grinding of the grinding portion according to the feeding direction of the feeding table by using the feeding direction selecting switch can easily set conditions for automatic grinding of the grinding portion, So that the operator can easily and easily carry out the work even if he is not a skilled worker.

In general, a cylindrical object to be processed is ground to a desired shape by grinding the peripheral surface according to the intended use after molding.

In the conventional circular grinding apparatus, the object to be processed is mounted on a table, and in the course of the linear movement of the table by the hydraulic cylinder, the peripheral surface of the object to be polished The tool is grinded on the peripheral surface of the workpiece, and the left and right feed of the table is controlled by adjusting the path of the hydraulic pressure through the solenoid to control the operation of the table and the switching of the direction.

However, since the solenoid control method as described above requires an electric control circuit for operating the solenoid, it is disadvantageous in that the electric circuit becomes complicated to control the feed speed and the like in addition to the right and left feed of the simple table, In the case of manually switching the left and right feed of the table as needed, there is a problem that it is impossible to manually switch the left and right feed of the table. To solve this problem, Korean Patent Registration No. 10-1565021 The same "table transfer control system of surface grinding machine for circular workpiece" has been developed.

KR 10-1565021 (2015.10.28.) B1 "Control of table transfer of surface grinding machine of circular workpiece" - Woojin JC Co., Ltd.

However, the above-mentioned "table transfer control device for a circular grinding machine surface grinding machine" is a technology related to transfer of a table, that is, a device for moving the table in a horizontal direction, and it is troublesome that a worker has to continuously adjust the infeed amount of the grinding portion There is a problem that the operator can not handle two or more machines at the same time.

In addition, there is a problem that a worker manually performs the infeed amount of the grinding portion, so that it takes a long time to adjust the infeed amount, and when the infeed amount can not be precisely controlled, the problem that the abrasion of the grinding wheel formed in the grinding portion becomes high Also, it is pointed out that the productivity is low due to the increased fatigue by the manual operation.

It is an object of the present invention to provide a servo control apparatus and a servo control method for a servo control apparatus which enable a servomotor to be operated by a signal generated by contact of a contact bracket and first and second limit switches during operation of a direction control lever, The automatic grinding machine of the present invention is capable of automatically controlling the feed of the grinding machine so that the operator can handle multiple surface grinding machines at the same time.

Further, according to the present invention, the touch bracket and the stop sensor are brought into contact with each other at a point where the pin coupled to the graduation wheel comes into contact with the limiting protrusion of the manual insertion stopper, so that the zero point adjustment can be easily performed even in the infeed according to the automatic transfer control of the grinding portion And it is an object of the present invention to provide an automatic cutting insert of a surface grinding machine which can prevent defects that may cause errors in surface grinding of a circular workpiece.

In the present invention, the infeed amount is adjusted using a scale wheel formed on the handle of the infeed handle portion, then the infeed amount of the grinding portion per one feed of the transfer table is selected through the infeed amount selection switch provided on the operation panel, It is possible to easily set the condition for automatic cutting of the grinding portion by selecting whether or not the grinding portion is controlled to be fed according to the feeding direction of the feeding table by using the feeding direction selecting switch, The present invention aims at providing an automatic cutting insert of a surface grinding machine which can be easily and easily accomplished even if the worker is not skilled.

According to an aspect of the present invention, there is provided a polishing apparatus comprising: a main body including a transfer table and a grinding section; A transfer handle unit configured to transfer the transfer table in the left and right direction; An infeed handle part formed in the main body and controlling the amount of infeed by controlling the grinding part in the forward and backward direction; An operation control unit installed in a main control block provided inside the main body and controlling whether a fluid is supplied according to an operation of an operation switch; And a direction control means having a direction setting block for controlling a conveying direction of the circular workpiece and a direction control means for controlling the conveying direction of the circular workpiece by automatically and manually controlling the conveying table in accordance with the operation of the control means, The surface grinding machine according to claim 1, wherein the control means includes: a mounting bracket coupled to the direction setting block; first and second limit switches connected to the mounting bracket such that the contact portions are opposed to each other; The first limit switch or the second limit switch is selectively brought into contact with the contact portion of the first limit switch or the second limit switch, And a signal generating unit coupled to the lever and configured to generate a signal to the first and second limit switches, wherein the cut-in handle unit is provided inside the main body, and the signal of the first and second limit switches And a power transmission unit connected between the cut-in handle part and the servo motor to transmit the power of the servo motor to the cut-in handle part. The automatic grinding machine according to any one of claims 1 to 5,

When the automatic folding device of the surface grinding machine of the present invention is used, the servo motor is operated by a signal generated by the contact of the contact bracket and the first and second limit switches at the time of operation of the direction control lever, It is possible to automatically control the infeed of the grinding portion to be automatically controlled so that the operator can handle a plurality of surface grinding machines at the same time.

Further, according to the present invention, the touch bracket and the stop sensor are brought into contact with each other at a point where the pin coupled to the graduation wheel comes into contact with the limiting protrusion of the manual insertion stopper, so that the zero point adjustment can be easily performed even in the infeed according to the automatic transfer control of the grinding portion So that it is possible to prevent defects such as an error in the surface grinding of the circular workpiece from occurring.

In the present invention, the infeed amount is adjusted using a scale wheel formed on the handle of the infeed handle portion, then the infeed amount of the grinding portion per one feed of the transfer table is selected through the infeed amount selection switch provided on the operation panel, It is possible to easily set the condition for automatic cutting of the grinding portion by selecting whether or not the grinding portion is controlled to be fed according to the feeding direction of the feeding table by using the feeding direction selecting switch, It is advantageous that the work can be accomplished conveniently and easily even if it is not a skilled worker.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing a surface grinding machine equipped with an automatic cutting insert according to the present invention; FIG.
FIG. 2 is a conceptual view of a front surface of a surface grinding machine provided with an automatic cutting insert according to the present invention. FIG.
3 is a conceptual view showing a surface grinding machine equipped with an automatic cutting insert according to the present invention in a plan view.
4 is a front view showing the control means provided with the signal generating unit of the present invention.
Fig. 5 is an installation view showing the automatic cutting insert of the surface grinding machine of the present invention in a plan view. Fig.
Figs. 6 and 7 are operation states for adjusting the infeed amount after zero point adjustment using the present invention. Fig.
8 is a state diagram showing an infeed amount selection switch, an infeed direction selection switch, and an automatic change switch provided on the operation panel of the present invention.

Hereinafter, the structure of the present invention will be described.

The present invention relates to an automatic cutting apparatus 1000 of a surface grinding machine installed in a surface grinding machine 500 to automatically control cutting of a grinding portion 13 as shown in FIGS. 1 to 5, 11) and a grinding portion (13); A transfer handle portion 20 formed in the main body 10 for transferring and controlling the transfer table 11 in the left and right direction; An infeed handle portion 30 which is formed in the main body 10 and adjusts the infeed amount by controlling the grinding portion 13 in the forward and backward direction; An operation control unit 120 installed in the main control block 110 and controlling whether the fluid is supplied or not according to the operation of the operation switch 121; (130) having a direction setting block (131) for controlling the conveying direction of the conveying table (11) and a direction control lever (133) by controlling the discharge direction of the installed and supplied fluid, (100), the surface grinding machine (500) for surface grinding a circular workpiece by automatically and manually controlling the feed table (11) according to the operation of the control means (100) The means 100 includes a mounting bracket 210 coupled to the direction setting block 131 and first and second limit switches 220 and 220 connected to the mounting bracket 210 such that the contact portions 221 and 231 are opposed to each other. 230), and a direction control lever (133) Is connected to the direction control lever 133 so as to selectively contact the contact portions 221 and 231 of the switch 220 or the second limit switch 230 to generate a signal to the first and second limit switches 220 and 230 The first and second limit switches 220 and 230 are installed in the main body 10 of the cut-off handle portion 30. The first and second limit switches 220 and 230, A servo motor 310 for generating power according to a signal of the servomotor 310 and a servo motor 310 connected between the cutting handle 30 and the servomotor 310 to transmit the power of the servomotor 310 to the infeed handle 30 And a power transmission unit 320. The grinding unit 13 can be automatically controlled to feed the grinding unit 13, which will be described in more detail below.

1 to 3, the main body 10 of the surface grinding machine 500 includes a transfer table 11 which is transferred in the lateral direction according to the operation of the transfer handle 20, (Not shown) for supporting a circular workpiece (not shown) is provided on the transfer table 11 in a normal configuration to constitute a grinding portion 13 that is fed in the forward and backward directions in accordance with the operation of the grinding machine 30 And the grinding portion 13 is provided with a conventional grinding wheel 15 for grinding a circular workpiece.

2 to 3, the feed handle 20 is provided in the main body 10 to control the feed table 11 to be conveyed in the left-right direction. The transfer table 11 may be controlled automatically by controlling the discharge direction of the fluid. Since this technique is well known in the art, a detailed description will be omitted.

3, the cut-in handle portion 30 is provided on the main body 10 to control the grinding portion 13 in the forward and backward directions so that the circular workpiece W provided on the support table of the feed table 11 That is, the amount of cutting of the grindstone 15 is adjusted. In the present invention, the infeed handle can be operated manually or by operation.

Fourth, the control means 100 is installed in the main control block 110 formed in the main body 10 as shown in FIG. 2 to FIG. 4, and determines whether or not the fluid is supplied according to the operation of the operation switch 121 A direction setting block 131 for controlling the conveying direction of the conveying table 11 by controlling the discharge direction of the fluid supplied to the main control block 110, The configuration of the direction control means 130 having the control lever 133 allows the transfer table 11 to be automatically and manually transferred according to the operation of the control means 100 to perform surface grinding of the circular workpiece , As it is a conventionally known technology as in the above prior art documents, and a detailed description thereof will be omitted.

2 to 5, the present invention includes a signal generator 200 for generating a signal for driving the infeed handle 30, a signal generator 200 for receiving a signal generated by the signal generator 200, The signal generating unit 200 and the inserting unit 300, which are the features of the present invention, are further comprised of an inserting unit 300 for automatically controlling the feed handle unit 30, 300 will be described in more detail.

The signal generating unit 200 is provided in the control unit 100 and generates a signal for driving the insertion unit 300 in accordance with the operation of the direction control lever 133. The signal generating unit 200 generates a signal A pair of first and second limit switches 220 and 230 coupled to the mounting bracket 210 and a directional control lever 133 And a contact bracket 240 coupled to the direction control lever 133 and selectively contacting the first and second limit switches 20 and 230 according to the operation of the direction control lever 133.

The first and second limit switches 220 and 230 are coupled to the mounting bracket 210 so that the first and second limit switches 220 and 230 can be easily brought into contact with the contact bracket 240 according to the operation of the direction control lever 133. Contact portions 221 and 231 are formed in the directions opposite to each other, and are disposed on both sides with the contact bracket 240 interposed therebetween.

In addition, the cut-in part 300 is provided inside the main body 10 so as to transmit power to the cut-in handle part 30 according to the signals of the first and second limit switches 220 and 230 formed in the signal generating part 200 A servomotor 310 fixed to the inside of the main body 10 through a conventional bracket and generating power according to signals from the first and second limit switches 220 and 230, And the power transmitting means 320 connected between the arm 30 and the servomotor 310 for transmitting the power of the servomotor 310 to the drop handle 30, That is, the infeed can be automatically controlled to be transferred.

Here, the power transmission means 320 may be easily achieved by using a belt pulley or the like, and may be applied to various forms if it is a known normal configuration for power transmission.

In the present invention, as shown in FIG. 3 or FIG. 5 to FIG. 7, a structure for easily adjusting the zero point so as to precisely control the automatic transfer of the grinding portion 13 as described above, 30 through the construction of the cut-in handle portion 30 including the handle 33, the indicator 34, the pin 35 and the stop means 39, And is described in more detail below.

First, the handle 33 is configured to control the amount of infeed by operating the grinding portion 13 having the grinding wheel 15 in the forward and backward directions. As is known in the art, by operating the knob 31 Thereby constituting a scale wheel 32 fixed and separated. Since the indicator 34 is provided on the main body 10 so as to achieve zero point adjustment using the scale wheel 32, detailed description is omitted.

The pin 35 is a conventional known structure which is coupled to the graduation wheel 32 formed on the handle 33 and disposed inside the body 10 and has a clockwise or counterclockwise And the operation limit point of the grinding portion 13 is set to be smaller than the operating limit point of the handle 33. In addition, And to set it.

In addition, the manual infeed stopper 37 enables easy zero point adjustment by restricting the movement of the pin 35 coupled to the graduation wheel 32 of the handle 33, And is disposed on the outer side of the main body 10 so as to be adjacent to the handle 33 so as to be coupled to the main body 10 with a shaft 37a, A limiting protrusion (37c) that is coupled to an end of the shaft (37a) so as to be positioned inside the main body (10) and rotates at a predetermined angle around the shaft (37a) And the zero point of the graduation wheel 32 is adjusted when the pin 35 comes into contact with the limiting projection 37b.

The stop means 39 is operable to stop the operation of the stop sensor 39b for stopping the surface grinding of the circular workpiece at the point where the zero point adjustment of the graduation wheel 32 by the pin 35 and the manual insertion stopper 37 is performed A touch bracket 39a coupled to the scale wheel 32 of the handle 33 and projecting to the outside of the scale wheel 32; And a stop sensor 39b coupled to the touch bracket 39a at a point where the zero point adjustment of the scale wheel 32 is performed. According to this, by the easy zero point adjustment It is possible to prevent defects that cause errors in the surface grinding of the circular workpiece.

The present invention is so arranged that the touch bracket 39a and the stop sensor 39b are brought into contact with each other at a point where the pin 35 coupled to the scale wheel 32 abuts the limiting projection 37b of the manual insertion stopper 37 The zero point adjustment can be easily achieved even when the grinding portion 13 is automatically cut by the automatic feed control. Thus, it is possible to prevent a defect that an error occurs in the surface grinding of the circular workpiece.

2 or 8, a normal operation panel 400 for operation is further included in the main body of the surface grinding machine 500. In the present invention, An infeed amount selection switch 410 for selecting one infeed amount of the grinding portion 13 to be automatically controlled to be fed per revolution and a control means for controlling whether or not to control the feed of the grinding portion 13 along the feeding direction of the feed table 11 And an automatic changeover switch 430 for automatically and manually changing the feed control of the grinding portion 13 so that the grinding portion 13 can be grasped even if it is not a skilled worker 13) can be set conveniently and easily.

Hereinafter, the operation of the preferred embodiment of the present invention will be described in more detail.

The manipulation part 37c formed on the manual insertion stopper 37 is rotated to the right so that the restriction protrusion 37b and the pin 35 are not in contact with each other, And then the manual insertion stopper 37 is rotated in the counterclockwise direction so that the limiting protrusion 37b which rotates about the shaft 37a at a predetermined angle around the axis 37a is moved to the position for setting the zero point by the pin 35).

Thereafter, the knob 31 is released to separate the handle 33 and the graduation wheel 32. Then, in a state in which the handle 33 is not moved by one hand, the other end of the graduation wheel 32 The pin 35 engaged with the graduation wheel 32 is brought into contact with the restricting projection 37b formed in the manual insertion stopper 37 to achieve zero adjustment.

On the other hand, when the zero point adjustment is performed as described above, the touching action of the touch bracket 39a coupled to the scale wheel 32 and the stop sensor 39b coupled to the main body 10 is performed at the same time, The manual operation of the handle portion 30 and the zero point adjustment for automatic operation are simultaneously performed.

In this state, the cutting amount of the grinding portion 13 can be adjusted by rotating the grinding wheel 32 in the counterclockwise direction. For example, in order to process the round workpiece 2 mm, The point of insertion of the grinding portion 13 can be specified by making the point coincide with the zero point of the indicator. The reason why 1 mm of the 2 mm cutting is performed is that the workpiece is formed into a circular shape, This is due to the abrasion twice as much as the infeed amount.

After the amount of cut of the grinding part 13 is adjusted as described above, the knob 31 is locked to unite the grinding wheel 32 and the handle 33 integrally, The pin 35 engaged with the graduation wheel 32 of the handle 33 is brought into contact with the restricting projection 37b of the manual insertion stopper 37 so that the surface of the handle 33 It is possible to limit the operation, and therefore, it is possible to prevent the infeed amount of the grinding portion 13 from being exceeded when the infeed handle portion 30 is manually operated.

In order to automatically infeed the grinding portion 13, the grinding wheel 32 and the handle 33 are integrally joined together by locking the knob 31 as described above, and the pin 35a and the limiting projection The insertion stopper 37 is rotated in the clockwise direction to prevent the contact between the pin 35a and the limiting protrusion 37b so as to prevent breakage due to the contact of the operation panel 400 The amount of one infeed of the grinding part 13, which is automatically controlled to be transported per one feed of the feed table 11, is selected by adjusting the selection switch 410.

It is preferable that the infeed amount selection switch 410 is composed of three stages so that the infeed amount of the grinding part 13 can be selected from 0.01 mm to 0.03 mm. However, the present invention is not limited thereto.

Then, the infeed direction selection switch 410 is set to be performed simultaneously on the left, right, left, and right sides so that the once infeed of the grinding portion 13 is automatically set in accordance with the feeding direction of the feed table 11 , And then automatically switches the automatic changeover switch 430.

When the infeed amount of the infeed amount selection switch 410 is set to 0.01 mm, the infeed amount per one reciprocation of the transfer table 11 is set at When the feed direction selection switch 420 is selected at the same time in the left and right direction, the reciprocation of the feed table 11 in the leftward and rightward direction is repeated once, and the feed amount of the grinding portion per feed Is 0.02 mm, the surface grinding of the circular workpiece is completed only when the reciprocating feed is performed 50 times.

The infeed along the forward and backward direction of the grinding unit 13 is detected by the first and second limit switches 220 and 230 formed in the signal generating unit 200 and the signal generated in accordance with the contact of the contact bracket 240, The servomotor 310 configured in the controller 300 can receive the servomotor 310 and operate the handle 33 of the infeed handle 30 through the power shear means 320 such as a belt pulley.

At the time when the surface grinding by the automatic cutting of the grinding portion 13 is completed, the grinding wheel 32 is positioned at the zero point and the touch of the touch bracket 39a and the stop sensor 39b is performed, 13 is stopped and the spindle head (not shown) for rotating the grindstone 15 is automatically stopped by the PLC program.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: main body 11: transfer table 13: grinding portion 15: grinding stone
20: Feed handle portion
A stopper is provided on a front end of a stopper of the stopper 39. The stopper 39 is provided with a stopper 39b and a stopper 39b.
100: control means 110: main control block 120: operation control means 121: operation switch 130: direction control means 131: direction setting block 133: direction control lever
200: signal generating unit 210: mounting bracket 220, 230: first and second limit switches 221, 231: contact unit 240: contact bracket
300: Inserts 310: Servo motor 320: Power transmission means
400: operation panel 410: infeed amount selection switch 420: infeed direction selection switch 430: automatic change-over switch
500: Surface grinding machine
1000: Automatic grinding machine for surface grinding machine

Claims (3)

A main body 10 including a transfer table 11 and a grinding portion 13;
A transfer handle portion 20 formed in the main body 10 for transferring and controlling the transfer table 11 in the left and right direction;
An infeed handle portion 30 which is formed in the main body 10 and adjusts the infeed amount by controlling the grinding portion 13 in the forward and backward direction;
An operation control unit 120 installed in the main control block 110 and controlling whether the fluid is supplied or not according to the operation of the operation switch 121; (130) having a direction setting block (131) and a direction control lever (133) for controlling the conveying direction of the conveying table (20) by controlling the discharge direction of the installed and supplied fluid, A surface grinding machine 500 for automatically and manually controlling the feed table 11 according to an operation of the control means 100 to perform surface grinding of a circular workpiece,
The control means 100 includes a mounting bracket 210 coupled to the direction setting block 131 and first and second limit switches 210 and 231 coupled to the mounting bracket 210 such that the contact portions 221 and 231 are opposed to each other. And a direction control lever 133 for selectively contacting the contact portions 221 and 231 of the first limit switch 220 or the second limit switch 230 according to the operation of the direction control lever 133. [ And a contact bracket 240 coupled to the first and second limit switches 220 and 230 to generate a signal to the first and second limit switches 220 and 230,
The cut-in handle portion 30 includes a handle 33 constituting a scale wheel 32 fixed and separated by the operation of the knob 31; An indicator (34) mounted on the body (10) for zero point adjustment of the scale wheel (32); A pin 35 coupled to the graduation wheel 32 of the handle 33; A limiting protrusion 37b is coupled to the main body 10 so as to be adjacent to the handle 33 so as to rotate about the axis 37a at a predetermined angle with respect to the axis 37a, 37b so as to automatically adjust the zero point of the graduation wheel 32; A touch bracket 39a coupled to the scale wheel 32 of the handle 33 and a touch bracket 39b coupled to the body 10 so as to be adjacent to the handle 33, And stop means (39) consisting of a stop sensor (39b) for stopping the surface grinding of the circular workpiece by making contact with the bracket (39a)
The infeed handle 30 includes a servomotor 310 installed inside the main body 10 and generating power according to signals from the first and second limit switches 220 and 230, And a power transmission unit 320 connected between the servomotor 310 and the servomotor 310 to transmit the power of the servomotor 310 to the infeed handle 30, (13) can be automatically controlled to be fed.
delete 2. The apparatus according to claim 1, wherein the main body (10) further comprises an operation panel (400)
The operation panel 400 is provided with an infeed amount selection switch 410 for selecting the infeed amount of the grinding part 13 which is automatically controlled to be fed once per feed of the feed table 11, A cutting direction selection switch 420 for selecting whether or not to control the feeding of the grinding portion 13 in accordance with the feeding direction of the grinding portion 13 and an automatic changing switch 430 for automatically and manually changing the feeding control of the grinding portion 13 Wherein the automatic grinding machine comprises an automatic grinding machine.

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