SU1468727A1 - Arrangement for dressing abrasive wheel - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to devices for dressing grinding wheels. The aim of the invention is to improve the accuracy of editing and correction of wear of the grinding wheel. For this purpose, on the basis of the I device, the carriage 2 of the right-hand tool 3 with the 4th drive of the reciprocating movement and the swinging support 6 with the sensor 8 of its angle of rotation, as well as the grinding wheel 9 with the grinding wheel II and the drive 14 of its raising and lowering are mounted and a screw 15 for correcting its balance with the position sensor 18. Sensors 8 and 18 are connected to the input of controller 19, the output of which is connected to the actuator 16. 2 Il.

Description

FIG. ;

The invention relates to mechanical engineering, in particular to devices for dressing grinding wheels.

The purpose of the invention is to improve the accuracy of dressing and wear compensation of the grinding wheel.

FIG. 1 schematically shows the proposed device; in fig. 2 is a grinding scheme using the proposed device.

The device comprises a base 1 on which a carriage 2 of the right tool 3 with a drive 4 of reciprocating mixing is mounted. On the plate 5 of the carriage 2 is mounted kachayush, ice caliper 6 with drive 7 swing; made, for example, in the form of a pneumatic cylinder. On the axis of the swing caliper 6 is installed sensor 8 angle Kachap. On the base 1, a grinding wheel 9 with a spindle 10 of the grinding wheel 11 is also mounted. The housing 12 of the spindle 10 is pivotally mounted on the grinding wheel 9, and its rotation is limited by a fixed rest 13. On the housing 12 of the spindle there is a drive 14 for raising and lowering P1 spindle, made, for example, type of pneumatic cylinder. The screw 15 for adjusting the position of the spindle 10 is connected to the drive 14 for raising and lowering and the drive 16 for mixing the screw by means of a nut from the flywheel 17. The correction screw is also provided with a sensor 18 for position. The outputs of the rotation angle sensors 8 and position 18 are connected to the input of the regulator 19, the output of which is connected to the screw 16 drive. The part 20 is mixed in the processing along the direction of the next 21.

The device works as follows.

The alignment is performed in the retracted position of the grinding headstock 9 with the grinding wheel from part 20. In this case, the body 12 of the frame 10 is raised with the wheel 11 relative to the axis of the valve by the pneumatic cylinder 14 to the fixed stop 13. In this position, the piston of the head 14 of the cylinder 14 me reaches the upper wall of the cylinder full circle wear (with a new circle).

By means of drive 7, plate 5 with the right tool 3, mounted on the rocker support 6, is lowered onto the working surface of the circle 11. Then the drive 4 is turned on, and the carriage 2 makes a return movement on the surface of the base 1. The right tool they are pressed against the circle 11, which rotates, and receives a rotation from it, which makes it possible to fill the working surface (periphery) of the circle along its entire height.

However, after the predetermined time required for leveling the working surface of the grinding wheel 11, the diameter of the wheel is monitored by removing the signal from the angle sensor 8. But at least

0

five

0

five

ABOUT

five

50

55

wear circle 11 decreases its diameter. At the same time, the angle of rotation of the caliper 6 relative to the position of the touch of it changes to a nonspecific new circle. Thus, each diameter of the circle corresponds to a certain angle of rotation of the caliper 6 and the magnitude of the signal at the output of the sensor 8 mounted on its axis. As the wheel 11 is worn, it is necessary to adjust the amount of its feed to the workpiece. The feed correction is made by the flywheel 17 by turning it with the drive 16. When the flywheel is rotated, the screw 15 and the drive housing 14 connected to it move and raise and lower the spindle 10 of the grinding wheel 11. This changes the magnitude of the stroke of the pneumatic cylinder, and therefore grinding wheel feed amount. The screw position sensor 18 connected to the actuator 16 controls the amount of lowering of the pneumatic cylinder body during the next stroke of the pneumatic cylinder of the actuator 14 and the grinding wheel 11 itself. Each position of the screw corresponds to a certain feed size and the face wheel 11 and the signal value at the output of the position sensor 18. Thus, a certain diameter of the grinding wheel corresponds to its position of the caliper 6 and screw 15.

After each circle edit, sensor signals 8 and 18 are compared. When there is wear on the wheel, its diameter decreases, the tilt angle of the slide 6 increases, and the signal at the sensor output 8. This results in a difference between the signals from sensors 8 and 18, and torus 19 is a signal that is driven by actuator 16 in the direction of decreasing the difference of the signals of sensors 8 and 18 to zero. The flywheel 17 rotates at a certain angle, and the screw 15 with the actuator actuator pneumatic cylinder body 14 mixes down, resulting in an increase in the piston stroke, and consequently, the feed rate of the grinding wheel.

When a new wheel is installed, the feed amount is adjusted in the direction of decreasing it. In this manner, the caliper 6 is also pressed against the working surface of the circle, and if the screw 15 is in the position corresponding to the feed rate of the removed worn circle, the difference between the signals of the sensors 8 and 18 changes sign and the actuator 16 fulfills this difference in the opposite direction, i.e. the screw 15 is raised with the actuator pneumatic cylinder body 14 and the grinding wheel feed rate is reduced in accordance with its diameter. Grinding the workpiece 20, which is mixed along the guides 21 of the body 12 with the grinding wheel 11, is lowered until the part touches the part by the required amount of penetration.

The proposed device allows “1 em to combine two auxiliary operations -

edit and control the wear of the grinding wheel, automate the process of editing, controlling and correcting the wear of the grinding wheel, improve the accuracy of the wear correction of the grinding wheel, improve the working conditions of the service staff and his staff, increase productivity by freeing the operator from the operation of dressing and correcting the wear of the grinding wheel and reduce the consumption of abrasive tools (grinding wheels), as with automatic straightening the process goes smoothly, without local wear of the working surface of the wheel, does not require For more fine-tuning and eliminate wobbling.

Claims (1)

Invention Formula A grinding wheel dressing device containing a spindle wheel, a base on which a carriage with a reciprocating drive is mounted for movement, carrying a swinging caliper of a right-handed swing-drive tool, characterized in that, in order to improve the accuracy of dressing and compensation for grinding wear circle, the device is equipped with a drive for raising and lowering the spindle pin and a screw for adjusting the spindle position with the drive for moving it, with the correction screw and the swinging support with are connected respectively to the entered device position sensor and steering angle sensor, outputs of which are connected with the input inputted in the regulator device, whose output is connected with the drive screw movement correction.