SU1024243A1 - A controlling lap unclamping - Google Patents

Abstract

A DEVICE FOR MANAGING A BRANCH OF A LOSS, containing a mechanism for unclamping a tool with a drive, sensors for touching and reaching size, relays for touching sensors and reaching size and a tool wear compensation unit, characterized in that, in order to simplify the device, the tool wear compensation unit is designed as an integrator with variable duration of discharge time and zero-organ, the charging contact of the touch sensor relay and the break contact of the relay are sequentially included in the integrator charge circuit Dimensions and bottom discharge of the integrator circuit through normally open relay contact sensor nulorgan achieve size and bonded to the strut drive mechanism. pq oo (L L Yu U 00 Figure 1

Description

The invention relates to a machine tool industry and can be used in lapping and honing machines.

A device for adjusting the unclamping of the hone bars is known, which contains a mechanism for unclamping the tool and sensors for touching and reaching size 1.

In this device, machining allowance influences machining accuracy.

The spread of the size after processing with the use of this device will be more than the spread of the size before processing by the amount of error, the processing volume. To reduce the size variation, compensation for tool wear during processing is necessary.

It is also known a device for controlling the uncoupling of the lap, containing a mechanism for unclamping the tool, touch sensors and reaching the size, a touch sensor relay, a sensor reaching the size and an assembly for compensating for tool wear. The tool wear compensation unit is designed as a stop interacting with sensors located on a movable plate rotated at a speed proportional to tool wear.

The rate of rotation of the plate is provided equal to the wear rate of the lap during processing by means of an adjustable electric motor. By the end of the treatment, the movable plate is rotated by an angle proportional to the amount of tool wear, compensating for tool wear 2.

However, the presence of a stop, a movable plate and an adjustable electric drive of the plate rotation complicates the design of the wear compensation unit and the device as a whole.

The aim of the invention is to simplify the construction of the device for controlling the uncoupling of the lap.

The goal is achieved by the fact that in the device for controlling the unclenching of the lap (hone), which contains the mechanism of the unclamping of the tool with the drive, the touch and reach sensors, the touch sensor and reach sensors relay and the tool wear compensation unit, the tool wear compensation unit is designed as an integrator with adjustable duration of discharge time and zero-organ, the charging contact of the touch sensor relay and the break contact of the size reaching relay, and the discharge floor are sequentially included in the integrator charge circuit ep integrator through closing. the contact of the sensor for reaching the size and the nullorgan is connected to the drive of the unclamping mechanism.

An integrator introduced into the device, made with an adjustable discharge time, provides the possibility of changing the compensation time.

depending on the ratio of the amount of wear of the priter to the amount of removal corresponding to this wear. The possibility of adjusting the discharge time of the integrator allows 5 to correct the change in the ratio of the wear value of the lap to the removal value of the allowance.

FIG. 1 shows a schematic of an uncoupler; in fig. 2 - block diagram

About control devices. . .

The device includes a tool unclamping mechanism, which includes a unclamping needle 1, unclamping tool 2, a 3-touch sensor, a gauge 4-reaching sensor, and a tool wear compensation unit. Knot

5 to compensate for wear made in the form of an integrator 5 with an adjustable length of time of discharge and a zero-body; 6. The needle 1 is connected to the drive 7 of the unclamping mechanism through the screw gear 8 and the pinion 9 and 10, and to the command flag

0 And through the friction gear 12 and gear 13 with the possibility of periodic. interaction of the flag 11 with the sensor 14 tool compression tool 2 and the sensor 4 reaching the size. At the output of sensor 4, a relay 15 is installed, and at the output of sensor 3 -

relay 16. Closing contact 17 relay 16

sensor 3 and break contact 18 relay

, 15 sensors 4 in series are included

into the integrator charge circuit 5.

In the discharge circuit of the integrator 5, a closing contact 19 of the relay 15 is installed, connecting the integrator 5 with the zero-organ 6. The zero-organ output 6 is connected via the end-of-cycle relay 20 to the input of the drive 7 of the unclamping mechanism 2.

The device works as follows.

After the command has been issued, the spindle head cycle (not shown) goes down and tool 2 is inserted into part 21. After insertion of tool 2, its reciprocating movement begins, and then rotation (rotation drive not shown) and unclamping from drive 7 through gears 9, 10 and the screw gear 8. Simultaneously with the movement of the needle 1 through the bristle 13 and the friction gear 12 begins

g turn the flag P.

When touched with tool 2 through. on the surface of the workpiece 21, the removal of the stock starts and the relay 16 of the sensor 3 is turned on. Through the closing end. cycle 17 relay 16 and normally closed contact 18

0 relay 15 is charged by the integrator 5. At the moment when the flag 11 enters the cutout of the sensor 4, the disconnecting contact 18 of the relay 15 breaks the charging circuit of the integrator 5. The charge level of the integrator 5 is proportional to the processing time from the moment the tool touches 2 parts 21 until the sensor 4 triggers .

After the sensor 4 is triggered, the part is further processed.

appropriate tool wear compensation 2. When the sensor 4 is triggered, the closing contact 19 of the relay 15 connects the discharge circuit of the integrator 5 to the null body 6.

The processing time for wear compensation of tool 2 can be adjusted by varying the time constant of the integrator 5 discharge circuit.

During compensation, the flag 11 stands on a rigid adjustable stop 22. In this case, the needle 1 is displaced relative to the flag 11 by the amount of additional removal corresponding to the wear of the tool 2 ,. and the integrator discharge 5. After the integrator 5 discharge, the null organ 6 is triggered and the cycle terminator 20 switches on the tool 2 to compress the sensor 14 and the spindle head is raised to its initial position.

The integrator is designed with an adjustable length of time, a discharge for ensuring the possibility of varying the compensation time depending on the ratio of the wear value of the lap to the removal value corresponding to this wear. The possibility of adjusting the time of the integrator's discharge makes it possible to correct the change in the ratio of the wear value of the lap to the removal value of the allowance. The device is simpler than the known.

Claims (1)

DEVICE FOR CONTROL OF THE PRINT LIQUID, comprising a mechanism for expanding the tool with a drive, touch and size sensors, relay of touch and size sensors and a tool wear compensation unit, characterized in that, in order to simplify the device, the tool wear compensation unit is made in the form integrator with an adjustable duration of the discharge time and the zero-organ, the closing contact of the touch sensor relay and the opening contact of the size achievement relay are sequentially included in the integrator’s charging circuit , and the integrator discharge circuit is connected to the drive of the expanding mechanism through the make contact of the size sensor and the zero organ.