Three-position oil cylinder driving device for gear shifting of machine tool
A driving device and oil cylinder technology, which can be used in driving devices, fluid pressure actuating devices, metal processing mechanical parts, etc., and can solve problems such as difficult and precise positioning
Inactive Publication Date: 2012-03-21
广州市珠江机床厂有限公司
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Problems solved by technology
[0004] In the prior art, an oil cylinder is generally used to drive the gear to change the position of the gear. The invention patent with application number 200910010763.3 proposes a reverse oil cylinder drive machine on both sides, which can realize the reverse and simultaneous drive of the piston rods on both sides, but due to the oil cylinder drive It is difficult to locate accurately, and the position can only be limited by the positioning boss, so that the piston rod can only be positioned at the extreme positions at both ends
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[0013] see figure 1 with figure 2 As shown, the three-position oil cylinder driving device for gear shifting of the machine tool according to the preferred embodiment of the present invention includes an oil cylinder 1, and a cylinder head 21 and a cylinder head 22 are respectively inserted inside the two ends of the oil cylinder 1. Such as figure 1 As shown, the left end is the cylinder head 21, the right end is the cylinder head 22, and one end inserted into the oil cylinder 1 forms a limit step in the oil cylinder 1; at the same time, a positioning step 11 is also provided in the middle of the inside of the oil cylinder 1 to separate The strokes of the first piston 3 and the second piston 4 in the oil cylinder 1 are limited.
[0014] The middle part of the first piston 3 is provided with a positioning step 31 to limit the left and right movable range of the first piston 3 . The right end of the first piston 3 extends out of the cylinder head 22 at the right end, and the...
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The invention provides a three-position oil cylinder driving device for gear shifting of a machine tool. The three-position oil cylinder driving device comprises an oil cylinder, wherein a positioning step is arranged in the middle part in the oil cylinder; cylinder covers are fixed at two ends of the oil cylinder respectively; hydraulic fluid ports are formed on the cylinder covers; a first piston and a second piston are arranged in the oil cylinder in a slideable manner; a positioning step is arranged in the middle of the first piston; the second piston is sleeved on one end of the first piston in a slideable manner; and the oil acting area at the right end of the positioning step in the middle of the first piston is smaller than the total oil acting area at the left ends of the first and the right pistons, but is not larger than the oil acting area at the left end of the first piston, so that three types of positioning for the two pistons are realized.
Description
technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a three-position oil cylinder driving device for automatic shifting of machine tools. Background technique [0002] The main shaft is the high-speed rotating motion mechanism of the machine tool and the key component of the machine tool. Its performance directly affects the processing quality of the parts. In the actual processing process, for different materials, in order to ensure the surface roughness, shape and position tolerance and cutting force of the parts, the spindle needs to have different speeds. The speed change of the main shaft is generally realized by electronic control or gearbox. The electronically controlled spindle directly uses the frequency conversion system to control the speed of the spindle, while the spindle gearbox uses different gear combinations to realize the control of several different speeds. [0003] Many existing machine tools adopt the...
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IPC IPC(8): F15B15/08B23Q5/12
Inventor 雷晓钟
Owner 广州市珠江机床厂有限公司