CN211388327U - Constant output pressure cylinder for grinding feeding mechanism - Google Patents
Constant output pressure cylinder for grinding feeding mechanism Download PDFInfo
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- CN211388327U CN211388327U CN201922378221.3U CN201922378221U CN211388327U CN 211388327 U CN211388327 U CN 211388327U CN 201922378221 U CN201922378221 U CN 201922378221U CN 211388327 U CN211388327 U CN 211388327U
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Abstract
The utility model discloses a constant output pressure cylinder for grinding feed mechanism belongs to lathe equipment technical field. The hydraulic cylinder comprises a horizontal valve body, a horizontal pull rod, a ball head handle, a piston rod, a vertical cylinder body and a linear motion ball bearing. The horizontal valve body is connected with the vertical cylinder block, a valve body air inlet hole, a valve body exhaust hole, a part of a piston upper cavity air passage and a piston lower cavity air passage are arranged on the horizontal valve body, a horizontal pull rod is arranged in the horizontal valve body, a pull rod exhaust hole is formed in the horizontal pull rod, a ball head handle is connected with the horizontal pull rod, a piston and a piston rod are arranged in the vertical cylinder block, a linear motion ball bearing is arranged at the bottom of an inner cavity of the vertical cylinder block, a grinding stone clamping mechanism mounting threaded hole is formed in the bottom end of the piston rod, and a piston lower cavity. The utility model discloses output pressure is stable, and safe and reliable guarantees the machining precision of work piece effectively.
Description
Technical Field
The utility model relates to a constant output pressure cylinder for grinding feed mechanism for super precision grinder's grindstone feed mechanism belongs to lathe equipment technical field.
Background
At present, a feeding mechanism of a grinding device is mostly numerical control shaft servo feeding, the grinding machining is completed by controlling the feeding amount of the grinding mechanism, the grinding is the last procedure of finish machining, the machine is usually required to be stopped for measurement in the machining process, or a workpiece is detected on line, the grinding mechanism is fed in a micro-feeding mode according to the detection result, and the final finish machining is completed in a reciprocating mode. One reason for such a complicated process is that the grinding stone is worn during the machining process, so that the pressure received by the workpiece during the grinding process is inconsistent, and the accuracy of the workpiece is affected. Meanwhile, the feeding of the grinding mechanism is controlled by the displacement of the numerical control shaft, so that the loss of the grinding stone has influence on the contact pressure, constant-pressure grinding cannot be performed, and the influence on the size consistency of different workpieces is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a invariable output pressure cylinder is applicable to the grinding feed mechanism of the super-precision grinding machine, and the control output displacement is not needed. When the grinding stone is worn, the constant-pressure air source pushes the piston to move, the abrasion loss of the grinding stone is automatically compensated, the grinding stone is always in constant-pressure contact with a workpiece, constant-pressure grinding is realized, and the precision and the size consistency of the workpiece are ensured. When the grindstone is worn to the limit position or broken, the feedback signal automatically controls the electromagnetic valve to change the direction, the gas flowing direction in the gas cylinder is switched, the feeding mechanism (the piston and the piston rod) is rapidly returned to the initial state, and the workpiece is prevented from being damaged.
The utility model provides a technical scheme that its technical problem adopted is: a constant output pressure cylinder for a grinding feeding mechanism comprises a horizontal valve body, a horizontal pull rod, a ball head handle, a piston rod, a vertical cylinder body and a linear motion ball bearing. The horizontal valve body is connected with the vertical cylinder body, the horizontal valve body is positioned at the upper end of the vertical cylinder body, a valve body air inlet hole is formed in the horizontal valve body, a valve body exhaust hole, a part of an upper piston cavity air passage and a lower piston cavity air passage, the horizontal pull rod is positioned in the horizontal valve body, a pull rod exhaust hole is formed in the horizontal pull rod, a ball head handle is in threaded connection with the extending end of the horizontal pull rod, a piston and a piston rod are positioned in an inner cavity of the vertical cylinder body, a linear motion ball bearing is positioned at the bottom of the inner cavity of the vertical cylinder body, the piston rod is positioned and guided through the linear motion ball bearing, a grinding stone clamping mechanism mounting threaded hole is formed in the bottom end of the piston rod.
When the cylinder is in a non-working state, the ball handle on the horizontal pull rod is pulled, the horizontal pull rod extends out, the valve body air inlet hole is communicated with the piston lower cavity, and gas with constant pressure is input through the valve body air inlet hole and enters the piston lower cavity to push the piston to move upwards. At the moment, the upper piston cavity is communicated with the vent hole on the horizontal pull rod, and the gas in the upper piston cavity is discharged into the atmosphere through the vent hole on the horizontal pull rod under the pushing of the piston. The piston rod vertically moves upwards together with the piston under the guiding action of the linear motion ball bearing, and the grinding stone clamping mechanism is lifted along with the piston rod, so that the grinding stone can be clamped.
When the cylinder enters a working state, the ball handle on the horizontal pull rod is pushed, the horizontal pull rod is retracted, the valve body air inlet hole is communicated with the piston upper cavity, and gas with constant pressure is input through the valve body air inlet hole and enters the piston upper cavity to push the piston to move downwards. At the moment, the lower cavity of the piston is communicated with the valve body vent hole on the horizontal valve body, and the gas in the lower cavity of the piston is exhausted out of the cylinder through the valve body vent hole on the horizontal valve body under the pushing of the piston. The piston rod vertically moves downwards together with the piston under the guiding action of the linear motion ball bearing, and the grinding stone clamping mechanism descends along with the piston rod until the grinding stone is contacted with the workpiece. The intake pressure acting on the piston is balanced with the reaction force of the workpiece acting on the piston, and the piston is in a balanced state. The cylinder and the grinding stone mechanism are driven by an external power mechanism to carry out grinding processing. Because the air inlet hole of the valve body is always communicated with the air source device with constant pressure, after the grinding stone is worn, the piston automatically descends to compensate the abrasion loss of the grinding stone, the grinding stone is always in contact with a workpiece, the pressure is constant, and the constant-pressure feeding of the grinding mechanism is realized.
The grinding machine is provided with a detection device, when the grinding stone is worn to a limit position or the grinding stone is broken, the detection device sends a signal to the control system, the control system controls the reversing of the electromagnetic valve to switch the flowing direction of the gas in the cylinder, at the moment, a valve body air inlet hole on the horizontal valve body becomes an air outlet hole, and a valve body air outlet hole on the horizontal valve body becomes an air inlet hole. The valve body exhaust hole on the horizontal valve body is communicated with the piston lower cavity after becoming an air inlet hole, and the air with constant pressure is input into the piston lower cavity to push the piston to move upwards. The piston upper cavity is communicated with a valve body air inlet hole on the horizontal valve body, and the gas in the piston upper cavity is exhausted out of the cylinder under the pushing of the piston. The piston rod and the piston move upwards, the grinding stone clamping mechanism rises together with the piston rod and returns to the initial state quickly, so that the piston rod and the grinding stone clamping mechanism are retracted quickly to avoid damaging workpieces in an emergency state, and manual intervention is not needed in the process.
The utility model has the advantages that: the utility model discloses output pressure is stable, and safe and reliable has solved grinding actuating mechanism when carrying out the grinding, the contact pressure problem of uncontrollable grindstone and work piece. The constant output pressure cylinder is used for the grinding feeding mechanism, output displacement does not need to be controlled, constant pressure contact between a grinding stone and a workpiece can be realized, and the consistency of workpiece precision and size is ensured. When the grinding stone is worn to the limit position or the grinding stone is broken, the feeding mechanism can return to the initial state rapidly, and the workpiece is prevented from being damaged.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic structural diagram of the present invention in a non-operating state.
Fig. 2 is a schematic structural diagram of the present invention in an operating state.
Reference numbers in the figures:
1. the grinding wheel grinding machine comprises a horizontal valve body, 2, a horizontal pull rod, 3, a ball head handle, 4, a piston, 5, a piston rod, 6, a vertical cylinder body, 7, a linear motion ball bearing, 8, a grinding wheel clamping mechanism mounting threaded hole, 9, a valve body air inlet hole, 10, a valve body exhaust hole, 11, a pull rod exhaust hole, 12, a piston lower cavity air passage, 13, a piston upper cavity air passage, 14, a piston lower cavity, 15 and a piston upper cavity.
Detailed Description
As shown in fig. 1-2, a constant output pressure cylinder for a grinding feeding mechanism comprises a horizontal valve body 1, a horizontal pull rod 2, a ball head handle 3, a piston 4, a piston rod 5, a vertical cylinder body 6 and a linear motion ball bearing 7, wherein the horizontal valve body 1 is connected with the vertical cylinder body 6, the horizontal valve body 1 is positioned at the upper end of the vertical cylinder body 6, the horizontal valve body 1 is provided with a valve body air inlet 9, a valve body exhaust hole 10, a piston upper cavity air passage 13 and a part of a piston lower cavity air passage 12, the horizontal pull rod 2 is positioned in the horizontal valve body 1, the horizontal pull rod 2 is provided with a pull rod exhaust hole 11, the ball head handle 3 is in threaded connection with the extending end of the horizontal pull rod 2, the piston 4 and the piston rod 5 are positioned in the inner cavity of the vertical cylinder body 6, the linear motion ball bearing 7 is positioned at the bottom of the inner, the bottom end of the piston rod 5 is provided with a mounting threaded hole 8 of the grinding stone clamping mechanism, the upper part of the vertical cylinder body 6 is provided with a piston lower cavity gas path 12, and a piston lower cavity 14 is communicated with the piston lower cavity gas path 12.
When the cylinder is in a non-working state, the ball handle 3 on the horizontal pull rod 2 is pulled, the horizontal pull rod 2 extends out of the horizontal valve body 1, the valve body air inlet hole 9 is communicated with the piston lower cavity 14 through the piston lower cavity air passage 12, gas with constant pressure is input through the valve body air inlet hole 9 and enters the piston lower cavity 14, and the pressure gas pushes the piston 4 to move upwards. At this time, the piston upper chamber 15 is communicated with the pull rod vent hole 11 on the horizontal pull rod 2 through the piston upper chamber air passage 13, and the gas in the piston upper chamber 15 is discharged from the vertical cylinder block 6 to the atmosphere through the pull rod vent hole 11 on the horizontal pull rod 2 under the pushing of the piston 4. The piston rod 5 moves vertically upwards together with the piston 4 under the guiding action of the linear motion ball bearing 7, the grinding stone clamping mechanism rises together with the piston rod 5, and the grinding stone clamping mechanism can be installed and clamped through the installation threaded hole 8 of the grinding stone clamping mechanism.
When the cylinder enters a working state, the ball handle 3 on the horizontal pull rod 2 is pushed, the horizontal pull rod 2 is retracted into the horizontal valve body 1, the valve body air inlet hole 9 is communicated with the piston upper cavity 15 through the piston upper cavity air passage 13, gas with constant pressure is input through the valve body air inlet hole 9 and enters the piston upper cavity 15, and the pressure gas pushes the piston 4 to move downwards. At this time, the piston lower cavity 14 is communicated with the valve body exhaust hole 10 on the horizontal valve body 1 through the piston lower cavity gas path 12, and the gas in the piston lower cavity 14 is exhausted out of the vertical cylinder body 6 through the valve body exhaust hole 10 on the horizontal valve body 1 under the pushing of the piston 4. The piston rod 5 moves vertically downwards together with the piston 4 under the guiding action of the linear motion ball bearing 7, and the grinding stone clamping mechanism descends along with the piston rod 5 until the grinding stone is contacted with a workpiece. The intake pressure acting on the piston 4 is balanced with the reaction force of the workpiece acting on the piston 4, and the piston 4 is in a balanced state. The whole cylinder device and the grinding stone mechanism are driven by an external power mechanism to carry out grinding processing. Because the valve body air inlet hole 9 is communicated with the air source device with constant pressure all the time, after the grinding stone is worn, the piston 4 automatically descends to compensate the abrasion loss of the grinding stone, the grinding stone is contacted with a workpiece all the time, the pressure is constant, and the constant pressure feeding of the grinding mechanism is realized.
A detection device is arranged on the grinding machine, when the grinding stone is worn to a limit position or the grinding stone is broken, the detection device sends a signal to a control system, and the control system controls the electromagnetic valve to change the direction. In the cylinder state shown in fig. 2, the valve body inlet hole 9 on the horizontal valve body 1 becomes an outlet hole, and the valve body outlet hole 10 on the horizontal valve body 1 becomes an inlet hole. After the valve body exhaust hole 10 on the horizontal valve body 1 is changed into an air inlet hole, the air inlet hole is communicated with the piston lower cavity 14 through the piston lower cavity air path 12, air with constant pressure is input through the valve body exhaust hole 10 at the moment and enters the piston lower cavity 14, and the pressure air pushes the piston 4 to move upwards. The piston upper cavity 15 is communicated with a valve body air inlet 9 on the horizontal valve body 1 through a piston upper cavity air passage 13, and under the pushing of the piston 4, the gas in the piston upper cavity 15 is discharged out of the vertical cylinder body 6 through the valve body air inlet 9. The piston rod 5 and the piston 4 vertically move upwards, the grinding stone clamping mechanism rises together with the piston rod 5 and rapidly returns to the initial state, so that the piston rod 5 and the grinding stone clamping mechanism are rapidly retracted under the emergency state, the workpiece is prevented from being damaged, and no manual intervention is needed in the process.
Claims (3)
1. A constant output pressure cylinder for a grinding feed mechanism, characterized in that: the ball valve comprises a horizontal valve body (1), a horizontal pull rod (2), a ball head handle (3), a piston (4), a piston rod (5), a vertical cylinder body (6) and a linear motion ball bearing (7), wherein the horizontal valve body (1) is connected with the vertical cylinder body (6), the horizontal valve body (1) is positioned at the upper end of the vertical cylinder body (6), a valve body air inlet hole (9), a valve body exhaust hole (10), a piston upper cavity air passage (13) and a piston lower cavity air passage (12) are arranged on the horizontal valve body (1), a piston upper cavity (15) is communicated with the piston upper cavity air passage (13), the horizontal pull rod (2) is positioned in the horizontal valve body (1), a pull rod exhaust hole (11) is arranged on the horizontal pull rod (2), the ball head handle (3) is in threaded connection with the extending end of the horizontal pull rod (2), the piston (4) and the piston rod (5) are positioned in an inner cavity, the linear motion ball bearing (7) is located at the bottom of an inner cavity of the vertical cylinder body (6), the piston rod (5) is located and guided through the linear motion ball bearing (7), a grinding stone clamping mechanism mounting threaded hole (8) is formed in the bottom end of the piston rod (5), a piston lower cavity air passage (12) is formed in the upper portion of the vertical cylinder body (6), and the piston lower cavity (14) is communicated with the piston lower cavity air passage (12).
2. A constant output pressure cylinder for a grinding feed mechanism according to claim 1, wherein: under the working condition, the valve body air inlet hole (9) is always communicated with an air source device with constant pressure, after the grinding stone is worn, the piston (4) automatically descends to compensate the abrasion loss of the grinding stone, the grinding stone is always in contact with a workpiece, the pressure is constant, and the constant-pressure feeding of the grinding mechanism is realized.
3. A constant output pressure cylinder for a grinding feed mechanism according to claim 1 or 2, characterized in that: when the grindstone is worn to the limit position or broken, the detection device sends a signal to the control system, and the control system controls the electromagnetic valve to change the direction; a valve body air inlet hole (9) in the horizontal valve body (1) is changed into an air outlet hole, a valve body air outlet hole (10) in the horizontal valve body (1) is changed into an air inlet hole, at the moment, gas with constant pressure is input through the valve body air outlet hole (10) to enter a piston lower cavity (14), a piston (4) is pushed to move upwards, gas in a piston upper cavity (15) is discharged through the valve body air inlet hole (9), a piston rod (5) moves upwards vertically together with the piston (4), a grinding stone clamping mechanism rises together with the piston rod (5) and rapidly returns to an initial state, and therefore in an emergency state, the piston rod (5) and the grinding stone clamping mechanism are rapidly retracted to avoid damaging a workpiece, and manual intervention is not needed in the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922378221.3U CN211388327U (en) | 2019-12-26 | 2019-12-26 | Constant output pressure cylinder for grinding feeding mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922378221.3U CN211388327U (en) | 2019-12-26 | 2019-12-26 | Constant output pressure cylinder for grinding feeding mechanism |
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| CN211388327U true CN211388327U (en) | 2020-09-01 |
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| CN201922378221.3U Active CN211388327U (en) | 2019-12-26 | 2019-12-26 | Constant output pressure cylinder for grinding feeding mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883695A (en) * | 2019-12-26 | 2020-03-17 | 齐重数控装备股份有限公司 | Constant output pressure cylinder for grinding feeding mechanism |
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- 2019-12-26 CN CN201922378221.3U patent/CN211388327U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883695A (en) * | 2019-12-26 | 2020-03-17 | 齐重数控装备股份有限公司 | Constant output pressure cylinder for grinding feeding mechanism |
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