SU593905A2 - Instrument for active dimension control - Google Patents

Description

one

The invention relates to metalworking and relates to means of automatic control of grinding.

According to the main author. St. 544543 A device for active dimensional control is known, comprising a housing, upper and lower measuring probes, and a locking mechanism in the form of a hydraulic cylinder with a pusher, and the locking mechanism is equipped with a split fork with a sector with a torque spring. A characteristic feature of this device is the large free running of the probes, which increases the instrument's speed when adjusting to size and when moving away from the measured part.

However, the disadvantage of this device is that it cannot be used to inspect parts with intermittent surfaces.

The aim of the invention is to expand the technological capabilities of the device.

This is achieved by the fact that the device. for active control of sizes on ed. St. 544543 is equipped with a damping device with an adjustment unit made in the form of a cylinder, the junction rod is connected kinematically with the valve

About sector, and the cylinder is fixed on a nut of the running screw of the adjustment unit.

FIG. 1 schematically shows the proposed device; in fig. 2 shows section A-A in FIG. one.

A cylindrical guide 2 is fastened in the housing 1 of the device, along which the carriage 3 of the upper probe 4 and the card 5 of the lower probe 6 moves. The carriages are mounted on ball separators

7 and 8. On the carriage 3 there is a scale 9, and on the carriage 5 there is a reading device 10 of the measuring converter. The carriages 3 and 5 of the test leads 4 and 6 are fixed to the drums 13 and 14 by locking mechanisms mounted on coaxially arranged semi-axes by means of flexible bands 11 and 12.

and supplied with torque springs 15.

Claims (1)

The 8 levers 16 of the drum 13, 14 abut the pusher 17 driven from the hydraulic cylinder 18. On the drums 13 and 14 are mounted toothed sectors 19, coupled with the toothed rails 20 mounted in the housing. Toothed racks are supported on piston 21 oil damping devices 22 containing a valve 23 with a spring 24 and an installed screw nut 25 of the spindle 26 driven by an electric motor 27, the gear sectors 19, the rails 20, the nut 25, the screw 26 and the electric motor 27 form adjustment knot. The device works as follows. In the initial state, the device for active control of dimensions is locked by a hydraulic cylinder 18, which, when pressure is applied to the lower cavity, raises the pusher 17, turning the levers 16 and the drums 13 and 14 on the levers 16. The force of the pusher 17 on the drum 14 of the lower probe 6 is opposite to the force, created by the torque spring 15 (indicated by arrow, as a result, the carriage 5 of the lower probe 6 moves to the lowest position under the weight. The force of the pusher 17 on the drum 13 of the upper probe 4 n Directed towards the force generated by the torque spring 15, as a result of which the carriage 3 of the upper probe is moved to its highest position. The gear racks 20 are lifted by the jagged sectors 19 to the edge of the upper position. Pistons 21 of the oil damping devices 22 under the action of the springs 24 move The motor 27 of the lead screw 26 is de-energized, the position of the nut 25 corresponds to the size of the product that needs to be controlled. , When pressure is applied to the upper cavity of the hydraulic cylinder 18, the pusher 17 releases the drums 13 and 14. Under the action of the difference, the force of the torque spring 15 and the weight of the lower carriage 5 move it upwards, the upper carriage 3 mixes down under the action of the force difference and force on the drum 13, As a result, the test probes are supplied to the part up to the stop of the toothed racks 20 in the piston 21 of the damping devices 22. Further movement of the test probes occurs at the speed of movement of the pistons 21 of the damping devices 22, which are regulated on or by adjusting the springs 24, raising the valve 23. As the stock is removed, the probes 4 and 6 follow the reduction in the diameter of the part, and the measuring transducer (scale 9 and reading device 10) fixes the remaining mismatch. If there are gaps in the test surface, the measuring probes do not sink into the gap due to the operation of the damping devices 22. When setting up the device, the tips move towards each other in the position retracted from the part. In this case, the part does not limit the movement of the test leads, with the result that after some time the pistons 21 of the damping devices 22 will be in their lowest position under the action of the toothed rails 20. The size controlled by the device in this position is determined by the position of the nut 25 on the lead screw 26. By turning on the electric motor 27, the nut 25 is moved until (in one direction or another) until the measuring transducer fixes the size to be monitored, after which the device in the initial state. The presence of an adjustment unit fixing with the help of damping devices the position of the carriages of the test probes makes it possible to expand the technological capabilities of the device. The invention The device for the active control of the size of the author. St. 544543, in order to expand the technological capabilities of the device, it is equipped with a damping device with an adjustment unit made in the form of a cylinder, the rod of which is connected kinematically with the swing sector, and the cylinder is fixed to the nut of the running adjustment knot.