CN211144975U - Pneumatic tool changing air cylinder for main shaft - Google Patents
Pneumatic tool changing air cylinder for main shaft Download PDFInfo
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- CN211144975U CN211144975U CN201922297374.5U CN201922297374U CN211144975U CN 211144975 U CN211144975 U CN 211144975U CN 201922297374 U CN201922297374 U CN 201922297374U CN 211144975 U CN211144975 U CN 211144975U
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Abstract
The utility model discloses a pneumatic tool-changing cylinder of a main shaft, which comprises a connecting body, a plurality of cylinder bodies, a sealing cover and a plurality of pistons, wherein the connecting body, the cylinder bodies and the sealing cover are sequentially connected in series and integrated, the cylinder is provided with a plurality of sliding cavities which are sequentially distributed from front to back, the pistons are arranged in the corresponding sliding cavities, the centers of the front sides of the pistons are respectively provided with a piston rod, the foremost piston rod extends out of the connecting body and is used for pushing out a pull rod of the main shaft forwards, all the other piston rods extend into the adjacent previous sliding cavity, air ducts for communicating the two adjacent sliding cavities are formed in all the other piston rods, broach air inlets are formed in the connecting body, air inlet ends of the broach air inlets are communicated with the broach air inlets, air outlets of the broach air inlets are communicated with the foremost sliding cavity, unclamping air inlets are formed in the sealing cover, and the unclamping air inlets are communicated with the rearmost sliding cavity. The utility model discloses structural design is novel, reliable operation and tool changing are fast.
Description
Technical Field
The utility model belongs to the technical field of the cylinder, concretely relates to pneumatic cylinder for tool changing of main shaft.
Background
The electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machine tools, and the electric main shaft, a linear motor technology and a high-speed cutter technology can push high-speed processing to a new era. At present, a common cylinder of a pneumatic tool changing spindle consists of a cylinder body, a cylinder cover, a piston and a piston rod, and the thrust ratio of the piston rod of the common cylinder is weak during tool changing, so that the tool changing speed of the pneumatic tool changing spindle is low and unreliable.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies of the prior art, an object of the present invention is to provide a pneumatic tool-changing cylinder for a spindle to solve the above technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a cylinder for pneumatic tool changing of a main shaft comprises a connecting body, a plurality of cylinder bodies, a sealing cover and a plurality of pistons, wherein the connecting body, the cylinder bodies and the sealing cover are sequentially connected into a whole in series, the cylinder is provided with a plurality of sliding cavities which are sequentially distributed in the front and the back, the pistons are arranged in corresponding sliding cavities, the centers of the front sides of the pistons are respectively provided with a piston rod, the foremost piston rod extends out of the connecting body and is used for pushing out a pull rod of the main shaft forwards, the rest piston rods extend into the adjacent front sliding cavity, air ducts for communicating the adjacent two sliding cavities are respectively arranged in the rest piston rods, a broach air inlet hole is formed in the connecting body, a broach air inlet channel is formed in the connecting body, the air inlet end of the broach air inlet channel is communicated with the broach air inlet hole, the air outlet of the broach air channel is communicated with the, the air inlet hole of the cutter loosening is communicated with the rearmost sliding cavity.
Further, main shaft center inlet port has still been seted up on the connector, first main shaft center inlet duct has been seted up in the connector, the inlet end and the main shaft center inlet port of first main shaft center inlet duct are linked together, the gas outlet of first main shaft center inlet duct is located the central through-hole inside wall of connector, has seted up second main shaft center inlet duct in the foremost piston rod, the gas outlet of second main shaft center inlet duct is located the preceding terminal surface of foremost piston rod, has seted up the annular of admitting air on the week side of foremost piston rod, the air inlet of second main shaft center inlet duct link up with the annular of admitting air mutually, the annular of admitting air is aligned with the gas outlet of first main shaft center inlet duct when foremost piston rod stretches out completely.
Furthermore, a front sensor used for sensing the extension of the pull rod and a rear sensor used for sensing the retraction of the pull rod are mounted on the inner side wall of the front end of the connecting body.
Furthermore, a proximity switch used for sensing the telescopic motion of the pull rod to generate an automatic tool changing signal is further installed on the inner side wall of the front end of the connecting body.
Furthermore, air guide grooves are formed in the centers of the rear end faces of the pistons, and the sizes of the air guide grooves are larger than the outer diameter of the piston rod.
Further, an annular sealing groove is formed in the outer peripheral side of the piston, and a sealing ring is embedded in the annular sealing groove.
Further, the piston and the piston rod are integrally formed.
Compared with the prior art, the utility model discloses following beneficial effect has: the cylinder is novel in structural design and reliable in work, certain air pressure is introduced into a cutter loosening air inlet hole during cutter changing, at the moment, the air pressure passes through a plurality of pistons and cylinder bodies from back to front, the next piston rod pushes the front piston, so that the foremost piston rod is instantaneously exploded to generate strong propelling force, the foremost piston rod pushes out to collide against the pull rod, the pull claw is enabled to extend forwards, and the original cutter is loosened and falls off; when a new cutter is grabbed by the pull claw, certain air pressure is introduced into the air inlet hole of the pull cutter, at the moment, the air pressure passes through the plurality of pistons and the cylinder bodies from front to back, the piston rod is enabled to return quickly, the pull rod and the pull claw on the pull rod return backwards automatically, and the effect of changing the cutter quickly from top to bottom is achieved.
Drawings
Fig. 1 is a structural sectional view of an embodiment of the present invention.
The labels in the figure are: 100. a cylinder; 110. a linker; 111. a broach air inlet hole; 112. a broach air intake; 113. a main shaft center air inlet hole; 114. a first spindle center inlet; 120. a cylinder body; 130. a sealing cover; 131. a cutter loosening air inlet hole; 140. a piston; 141. a piston rod; 142. an air duct; 143. a second spindle center inlet channel; 144. an air inlet ring groove; 145. an air guide groove; 150. an air inlet joint; 161. a front sensor; 162. a rear sensor; 170. a proximity switch; 180. a seal ring; 190. and a clamp spring.
Detailed Description
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, a pneumatic tool changing cylinder 100 for a spindle comprises a connector 110, a plurality of cylinder bodies 120, a sealing cover 130 and a plurality of pistons 140, wherein the connector 110, the cylinder bodies 120 and the sealing cover 130 are sequentially connected in series and integrated, the cylinder 100 has a plurality of sliding cavities distributed in sequence from front to back, the pistons 140 are installed in the corresponding sliding cavities, the front centers of the pistons 140 are all provided with piston rods 141, the foremost piston rod 141 extends out of the connector 110 and is used for ejecting a pull rod of the spindle forwards, the rest of the piston rods 141 are all extended into the adjacent front sliding cavity, the rest of the piston rods 141 are all provided with air ducts 142 communicating the two adjacent sliding cavities, the connector 110 is provided with a broach air inlet hole 111, the connector 110 is provided with a broach inlet channel 112, the air inlet end of the broach inlet channel 112 is communicated with the broach air inlet hole 111, the air outlet of the broach air inlet channel 112 is communicated with the frontmost sliding cavity, the sealing cover 130 is provided with a cutter loosening air inlet hole 131, and the cutter loosening air inlet hole 131 is communicated with the rearmost sliding cavity. Wherein the longer cylinder 120 may be divided into a plurality of sliding chambers by the circlip 190.
In this embodiment, cool down in order to realize the motor to the main shaft, main shaft center inlet hole 113 has still been seted up on the connecting body 110, first main shaft center inlet channel 114 has been seted up in the connecting body 110, the inlet end and the main shaft center inlet hole 113 of first main shaft center inlet channel 114 are linked together, the gas outlet of first main shaft center inlet channel 114 is located the central through-hole inside wall of connecting body 110, has seted up second main shaft center inlet channel 143 in the foremost piston rod 141, the gas outlet of second main shaft center inlet channel 143 is located the preceding terminal surface of foremost piston rod 141, has seted up air inlet ring groove 144 on the week side of foremost piston rod 141, the air inlet of second main shaft center inlet channel 143 is link up with air inlet ring groove 144, air inlet ring groove 144 aligns with the gas outlet of first main shaft center inlet channel 114 when foremost piston rod 141 stretches, at this time, cooling air enters from the main shaft center air inlet hole 113, enters the air inlet ring groove 144 after passing through the first main shaft center air inlet channel 114, enters the second main shaft center air inlet channel 143 through the air inlet ring groove 144, and finally enters the inner cavity of the main shaft shell, so that the motor is cooled. Wherein, the air inlet joint 150 is installed on the main shaft center air inlet hole 113, the broach air inlet hole 111 and the unclamping air inlet hole 131, and respective air inlet pipes are conveniently connected.
In the present embodiment, a front sensor 161 for sensing the extension of the draw bar and a rear sensor 162 for sensing the retraction of the draw bar are mounted on the inner side wall of the front end of the connecting body 110, and the front sensor 161 and the rear sensor 162 are preferably, but not limited to, inductive sensors, such as model BD 1-S3-P3. The inner side wall of the front end of the connecting body 110 is further provided with a proximity switch 170 (the type of the proximity switch is unlimited) for sensing the telescopic movement of the pull rod to generate an automatic tool changing signal, and when the telescopic movement of the pull rod triggers the proximity switch 170, the proximity switch generates an automatic tool changing signal.
In this embodiment, the outer circumferential sides of the pistons 140 are both provided with annular seal grooves, and seal rings 180 (such as star-shaped seal rings) are embedded in the annular seal grooves, so that the pistons 140 are in sealing contact with the inner wall of the cylinder 120 through the seal rings 180; preferably, the centers of the rear end surfaces of the pistons 140 are respectively provided with an air guide groove 145, the size of the air guide groove 145 is larger than the outer diameter of the piston rod 141, and the air guide groove 145 can well guide compressed air to enter the air passage 142 in the piston rod 141. The piston 140 and the piston rod 141 are preferably, but not limited to, integrally formed, and have a simple structure and easy manufacture.
When compressed air with preset air pressure is sent from the cutter loosening air inlet hole 131 of the air cylinder 100, the compressed air sequentially enters the plurality of cylinder bodies 120 from back to front and sequentially pushes the plurality of pistons 140 to move forwards from back to front, the next piston rod 141 pushes the previous piston 140, the foremost piston rod 141 is instantaneously exploded to generate strong propelling force, and the foremost piston rod 141 collides with the pull rod of the main shaft, so that the pull rod extends forwards; when compressed air with preset air pressure is sent from the broach air inlet hole 111 of the air cylinder 100, the compressed air sequentially enters the plurality of cylinder bodies 120 from front to back, and sequentially pushes the plurality of pistons 140 from front to back to move backwards and return, so that the foremost piston rod 141 returns, and the pull rod of the main shaft and the pull claw on the pull rod also automatically return.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art should not depart from the technical scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the scope of the present invention.
Claims (7)
1. The utility model provides a pneumatic cylinder for tool changing of main shaft which characterized in that: comprises a connecting body, a plurality of cylinder bodies, a sealing cover and a plurality of pistons, wherein the connecting body, the cylinder bodies and the sealing cover are sequentially connected in series front and back to form a whole, the cylinder is provided with a plurality of sliding cavities which are distributed in sequence from front to back, the pistons are arranged in the corresponding sliding cavities, the front centers of the pistons are provided with piston rods, the foremost piston rod extends out of the connecting body and is used for pushing out a pull rod of the main shaft forwards, the other piston rods extend into the adjacent previous sliding cavity, the other piston rods are provided with air ducts communicated with the adjacent two sliding cavities, the connector is provided with a broach air inlet hole, the connector is internally provided with a broach air inlet channel, the air inlet end of the broach air inlet channel is communicated with the broach air inlet hole, the air outlet of the broach air inlet channel is communicated with the frontmost sliding cavity, the sealing cover is provided with a cutter loosening air inlet hole, and the cutter loosening air inlet hole is communicated with the rearmost sliding cavity.
2. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: still seted up main shaft center inlet port on the connector, first main shaft center inlet duct has been seted up in the connector, the inlet end and the main shaft center inlet port of first main shaft center inlet duct are linked together, the gas outlet of first main shaft center inlet duct is located the central through-hole inside wall of connector, has seted up second main shaft center inlet duct in the foremost piston rod, the gas outlet of second main shaft center inlet duct is located the preceding terminal surface of foremost piston rod, has seted up the annular of admitting air on the week side of foremost piston rod, the air inlet of second main shaft center inlet duct link up with the annular of admitting air mutually, the annular of admitting air is aligned with the gas outlet of first main shaft center inlet duct when foremost piston rod stretches out completely.
3. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: and a front sensor used for sensing the extension of the pull rod and a rear sensor used for sensing the retraction of the pull rod are installed on the inner side wall of the front end of the connecting body.
4. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: and a proximity switch used for inducing the telescopic motion of the pull rod to generate an automatic tool changing signal is further installed on the inner side wall of the front end of the connecting body.
5. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: the center of the rear end face of the piston is provided with air guide grooves, and the size of each air guide groove is larger than the outer diameter of the piston rod.
6. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: the periphery side of the piston is provided with an annular sealing groove, and a sealing ring is embedded in the annular sealing groove.
7. The pneumatic tool changing cylinder for the spindle according to claim 1, characterized in that: the piston and the piston rod are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922297374.5U CN211144975U (en) | 2019-12-19 | 2019-12-19 | Pneumatic tool changing air cylinder for main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922297374.5U CN211144975U (en) | 2019-12-19 | 2019-12-19 | Pneumatic tool changing air cylinder for main shaft |
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| Publication Number | Publication Date |
|---|---|
| CN211144975U true CN211144975U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922297374.5U Active CN211144975U (en) | 2019-12-19 | 2019-12-19 | Pneumatic tool changing air cylinder for main shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878404A (en) * | 2021-10-09 | 2022-01-04 | 江苏星晨高速电机有限公司 | Electrical testing device of broach mechanism |
-
2019
- 2019-12-19 CN CN201922297374.5U patent/CN211144975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878404A (en) * | 2021-10-09 | 2022-01-04 | 江苏星晨高速电机有限公司 | Electrical testing device of broach mechanism |
| CN113878404B (en) * | 2021-10-09 | 2022-07-12 | 江苏星晨高速电机有限公司 | Electrical testing device of broach mechanism |
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