Constant power saw cutting control device of band sawing machine
A band sawing machine and constant power technology, applied in the field of control, can solve problems such as wear, complex mechanical structure, and failure to detect the size of the sawing load, and achieve the effects of improving life, practicability and reliability
Inactive Publication Date: 2012-06-27
HANGZHOU DIANZI UNIV
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Problems solved by technology
The two-point support reaction force feedback device of the band saw blade controls the feed of the band saw machine by detecting the sawing load on the band saw blade. The support reaction force feedback device needs to keep in contact with the band saw blade at high speed at all times, and it will be damaged after a long time. Wear and tear will affect the detection accuracy
The patent publication number is CN86200216, which relates to a band sawing machine with a constant feed force mechanism. It works through a hydraulic cylinder with constant pressure and the saw frame of the band sawing machine to provide basically constant sawing pressure on the workpiece. This method does not Detect the size of the sawing load, and the mechanical structure is complex
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[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] The constant power sawing control device of the band sawing machine includes a feed displacement sensor, a tension displacement sensor, a control circuit and a proportional reversing valve. The feed displacement sensor is arranged in the feed hydraulic cylinder of the band sawing machine, and the tension displacement sensor is arranged in the tension hydraulic cylinder of the band sawing machine.
[0023] like figure 1 As shown, the control process of the constant power sawing control device of the band sawing machine is as follows: firstly, the operator adjusts the tensioning hydraulic cylinder of the band sawing machine according to the material to be cut. At this time, the displacement signal of the tensioning hydraulic cylinder is collected by the tensioning displacement sensor, and the The displacement signal is set as the reference signal r(t). Then the ...
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The present invention relates to a constant power saw cutting control device of a band sawing machine. The prior control device can not adjust the saw cutting feeding speed according to the change of saw cutting load. The constant power saw cutting control device of band sawing machine comprises a displacement sensor, a tension displacement sensor, a control circuit and a proportional reversing valve. The feeding displacement sensor is disposed in a hydraulic cylinder of a band sawing machine; the tension displacement sensor is disposed in a tension hydraulic cylinder of the band sawing machine; a signal output end of the feeding displacement sensor and a signal output end of the tension displacement sensor are respectively connected to a A / D sampling module in a control circuit; a signal output end of the control circuit is connected to a signal input end of the proportional reversing valve. In the present invention, the non-contact detection to the saw cutting load of a band saw blade is realized; and real-time feedback of the saw cutting load received by the band saw blade is realized during the saw cutting procedure; the practicability and reliability are both better than the practicability and reliability of direct detection.
Description
technical field [0001] The invention belongs to the technical field of control, and relates to a constant power sawing control device for a band sawing machine. Background technique [0002] As a kind of sawing machine, a band sawing machine is a machine tool that uses a band saw blade as a tool and is widely used in sawing ferrous metals, non-ferrous metals, and non-metallic materials. The system components of the band sawing machine are: bed and column parts, saw frame and belt drive part, tension part, guide part, workpiece clamping part, hydraulic transmission system, electrical control system, lubrication and cooling system. The sawing feed system of the band sawing machine is composed of a hydraulic transmission system control and an electrical control system. The hydraulic transmission system is a hydraulic circuit composed of pumps, valves, oil cylinders, fuel tanks, pipelines and other components. The electrical control system is a control circuit composed of elect...
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IPC IPC(8): G05B19/18
Inventor 倪敬邵斌许明
Owner HANGZHOU DIANZI UNIV
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