Absolute value displacement measuring system of cubic press

Abstract

The invention provides an absolute value displacement measuring system of a cubic press. The absolute value displacement measuring system of the cubic press comprises the cubic press, computer equipment and electro-hydraulic control equipment, the cubic press comprises six cylinders, the six cylinders comprise three fixed cylinders and three movable cylinders, the three fixed cylinders are respectively a left cylinder, a rear cylinder and a lower cylinder, and the three movable cylinders are respectively a right cylinder, a front cylinder and an upper cylinder; the three dead cylinders are connected through a fixed throttle valve, and the three movable cylinders are connected through a proportional throttle valve. The positions where the idle motion of the three movable cylinders is finished are hammer stopping positions, and the hammer stopping positions are synchronous starting points of the six cylinders. The absolute value displacement measuring system for the cubic press has the advantages that the production efficiency can be improved, interference can be resisted, the precision requirement for cylinder synchronization can be met, the movement of a corresponding dead cylinder can be quickly, accurately and timely tracked, and the precision requirement for cylinder synchronization can be met.

Description

technical field [0001] The invention belongs to the technical field of displacement measurement systems for six-sided top presses, and in particular relates to an absolute value displacement measurement system for six-sided top presses. Background technique [0002] The six-sided top press is used for the production of superhard materials. At present, it is mainly used for the production of diamond and cubic boron nitride related products. The production processes of these two products are quite different, but the working principle and operation method of the press are similar. When the six-sided top press is working, it is necessary to control the stroke. At present, the two main control methods are as follows: 1. The proximity switch or limit switch is used to detect and control the stop hammer position of the three live cylinders; 2. The continuous displacement is used The sensor detects and controls the stop hammer position of the three live cylinders, and always monitor...

AI Technical Summary

Problems solved by technology

[0002] The six-sided top press is used for the production of superhard materials. At present, it is mainly used for the production of diamond and cubic boron nitride related products. The production process of these two products is quite different, but the working principle and operation method of the press are similar. When the six-sided top press is working, the stroke needs to be controlled. At present, the two main control methods are as follows: 1. Proximity switches or limit switches are used to detect and control the stop hammer positions of the three live cylinders; 2. Continuous displacement The sensor detects and controls the hammer stop positions of the three live cylinders, and always monitors the real-time positions of the six working cylinders. In actual production work, it is found that the above two control methods have the following shortcomings: 1. Due to the proximity switch and limit switch The accuracy is low, resulting in: A. It is difficult to adjust the stop hammer position; B. The stop hammer position of the three live cylinders is inaccurate, and the synthetic block cannot be pressed or crushed; 2. The existing displacement measurement sensor is fixed on the piston and On the hinge beam, detect the relative displacement between the piston and the hinge beam; under the ultra-high pressure condition, due to the elastic deformation of the press, there is an error in the position detection of the working cylinder

[0003] However, there are deficiencies in the above structure, because in the control process of the synthetic superhard material, the position accuracy of the six cylinders determines the centering and synchronization of the press, and poor synchronization will lead to diamond The center of gravity of the synthetic block shifts, the light one affects the pressure field and temperature field of the synthetic cavity, destroys the growth conditions of diamonds, reduces the output and quality of synthetic diamonds, greatly increases the cost of synthesis, and reduces the production efficiency of the six-sided top press

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