A Self-pressurizing Balance Mechanism and Its Application in Machining Center
A balancing mechanism and self-boosting technology, applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve the problems of high power consumption, high maintenance cost and low precision.
Active Publication Date: 2016-03-16
宁波北仑牧田机械有限公司
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Problems solved by technology
There are many ways to balance the spindle box of the machining center, such as servo motor amplification balance, weight balance, hydraulic counterweight balance, etc., among which various balance methods have their own advantages and disadvantages. The servo motor amplification balance screw and nut increase , the running speed is fast, but the temperature rise is fast and high, the power consumption is large, and the maintenance cost is high; the weight balance cost is low, but the speed is slow and unstable; the oil pressure counterweight balance speed is medium, the response is not quick enough and the accuracy is not high
The balance of the spindle box has an important impact on the performance of the machine tool, and the existing balance method cannot reach the optimal state for the machine tool as a whole, so that the performance of the machine tool cannot be maximized and affects the processing efficiency
Method used
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Embodiment 1
[0032] The compressed gas in the gas storage tank 11 enters the lower part of the balance cylinder 14 after being regulated by the pressure regulating valve 12 and the constant pressure reducing valve 13, and the balance cylinder 14 generates an upward supporting force to offset the gravity of the machine tool headstock 15, and the machine tool headstock 15. During the up and down movement, the driving force of the motor is completely applied to the frictional force and processing load during the moving process. It does not need to be used to offset the gravity of the machine tool spindle box 15, which improves the actual utilization rate of the motor. The machine tool adopts a pneumatic self-pressurization balance method See Table 1 for comparison with other balancing methods:
[0033]
[0034] Table 1
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The invention relates to a self-pressurization balance mechanism and application on a machining center. The self-pressurization balance mechanism comprises an external air source, an solenoid valve I, a solenoid valve II, a solenoid valve III, an air cylinder I, an air cylinder II, a single-way valve I, a single-way valve II, an air storage tank, a pressure adjusting valve, a constant pressure reducing valve, a balance cylinder and a lathe main shaft box. The external air source is respectively connected with the solenoid valve I, the solenoid valve II and the air storage tank through pipelines. The solenoid valve I is respectively connected with the solenoid valve II and the solenoid valve III. The solenoid valve II is connected with the air cylinder I. The single-way valve I and the single-way valve II are arranged between the air storage tank and the external air source. A pipeline between the single-way valve I and the single-way valve II is connected with the air cylinder II. A piston rod is arranged between the air cylinder I and the air cylinder II. A stirring piece is arranged in the middle of the piston rod. A stirring piece contact point A1 and a stirring piece contact point B1 are respectively arranged close to the air cylinder II and the air cylinder I on two sides of the stirring piece. Self pressurization is carried out on the external air source through a pneumatic self-pressurization mechanism, a balance function is achieved, external electric control is of no need, and a pressurization process is automatically completed.
Description
technical field [0001] The invention relates to the technical field of design and application of a pneumatic self-pressurizing balancing device, in particular to a self-pressurizing balancing mechanism and its application on a machining center. Background technique [0002] The self-pressurization balance mechanism is a balance mechanism that can self-pressurize the input air source and boost the output air pressure to a design value without the use of external force through a reasonable layout, and has a real-time pressure maintaining function. The rational layout of each part is very important. There are many ways to balance the spindle box of the machining center, such as servo motor amplification balance, weight balance, hydraulic counterweight balance, etc., among which various balance methods have their own advantages and disadvantages. The servo motor amplification balance screw and nut increase , the running speed is fast, but the temperature rise is fast and high, ...
Claims
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Inventor 郑森法
Owner 宁波北仑牧田机械有限公司