CN219113570U - Clamping detection device of full-automatic indexing chuck - Google Patents
Clamping detection device of full-automatic indexing chuck Download PDFInfo
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- CN219113570U CN219113570U CN202221397042.XU CN202221397042U CN219113570U CN 219113570 U CN219113570 U CN 219113570U CN 202221397042 U CN202221397042 U CN 202221397042U CN 219113570 U CN219113570 U CN 219113570U
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- ejector rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model discloses a clamping detection device of a full-automatic indexing chuck, which is characterized by comprising a clamping detection oil way and a hydraulic cylinder, wherein the clamping detection oil way comprises a two-position four-way hydraulic control valve, a first working position of the two-position four-way hydraulic control valve is controlled by an ejection oil way of a first ejector rod arranged in the indexing chuck, a second working position of the two-position four-way hydraulic control valve is controlled by a reset spring, a first ejector rod guide cavity and a second ejector rod guide cavity are arranged in the indexing chuck, a first ejection in-place detection port is arranged on the first ejector rod guide cavity, a second ejection in-place detection port is arranged on the second ejector rod guide cavity, a first detection channel, a second detection channel and a third detection channel are arranged in the indexing chuck, a first end of the first detection channel is connected with the first ejection in-place detection port, a first end of the second detection channel is connected with the second ejection in-place detection port, and a first end of the third detection channel is connected with a rodless cavity of the hydraulic cylinder. The method has the advantage of high detection accuracy.
Description
Technical Field
The utility model relates to the technical field of hydraulic pressure, in particular to a clamping detection device of a full-automatic indexing chuck.
Background
The index chuck is a special chuck used on a numerical control lathe, and the workpiece is driven to rotate by the program control clamp, so that a plurality of surfaces of the workpiece can be machined under the condition that the workpiece is clamped once. There is a risk in the use of current indexing chucks that, for various reasons, results in the workpiece failing to be indexed as programmed. As a result, the workpiece is scrapped when the workpiece is light, and the CNC machine tool is crashed when the workpiece is heavy, so that the precision chuck and the spindle part of the tool turret of the machine tool are damaged.
The existing methods for realizing the locking detection applied to the index chuck mainly comprise the following steps of; the method is characterized in that whether the chuck is indexed or not is judged by detecting pressure changes of two hydraulic circuits corresponding to two ejector rods, and because the indexing period of the index chuck is only 0.4 to 1 second, pressure fluctuation or conduction is delayed, misalarming or missing report is easy to occur due to insensitivity of a sensor, whether the ejector rods are in place or not cannot be accurately detected in the mode, and the method can be realized by six paths of oil, firstly, the number of accessories of the chuck is increased, so that the cost is increased, secondly, the overall dimension of the chuck is increased, and the method is not suitable for small machine tools; the other is to detect the locking position of one ejector rod, and only one loop can be detected in the mode, and when the other loop is locked, the detection cannot be performed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the clamping detection device of the full-automatic indexing chuck, which has the advantages of simple structure, high detection accuracy and low cost and is suitable for small machine tools.
The technical scheme adopted for solving the technical problems is as follows:
the device is characterized by comprising a clamping detection oil way arranged in the indexing chuck and a hydraulic cylinder arranged outside the indexing chuck, wherein the clamping detection oil way comprises a two-position four-way hydraulic control valve, the two-position four-way hydraulic control valve is provided with two working positions and four working oil ports, the two working positions are a first working position and a second working position, the four working oil ports are a first working oil port, a second working oil port, a third working oil port and a fourth working oil port, the first working oil port is communicated with the second working oil port, the third working oil port is communicated with the fourth working oil port, the first working position is controlled by an ejection oil way of a first ejector rod arranged in the indexing chuck, the second working position is controlled by a reset spring, the index chuck is internally provided with a first ejector rod guide cavity for the first ejector rod to move and a second ejector rod guide cavity for the second ejector rod to move, a first ejection in-place detection port communicated with the first ejector rod guide cavity is arranged on the first ejector rod guide cavity corresponding to the complete ejection position of the first ejector rod, a second ejection in-place detection port communicated with the second ejector rod guide cavity is arranged on the second ejector rod guide cavity corresponding to the complete ejection position of the second ejector rod, a first detection channel, a second detection channel and a third detection channel are arranged in the index chuck, the first detection channel is arranged between the first ejector rod guide cavity and the two-position four-way hydraulic control valve, the first end of the first detection channel is communicated with the first ejection in-place detection port, the second detection channel is arranged between the second ejector rod guide cavity and the two-position four-way hydraulic control valve, the first end of the second detection channel is communicated with the second ejection in-place detection port, the third detection channel is arranged between the two-position four-way hydraulic control valve and the hydraulic cylinder, and the first end of the third detection channel is communicated with the rodless cavity of the hydraulic cylinder; the first ejector rod is ejected, the ejection oil way is in high pressure, the two-position four-way hydraulic control valve is driven to move towards the direction of the reset spring, when the first ejector rod is ejected in place, the second end of the first detection channel is communicated with the first working oil port, the second end of the third detection channel is connected with the second working oil port, and at the moment, the hydraulic cylinder can be ejected normally to indicate that the first ejector rod is in a non-clamping state; the first ejector rod is retracted, the second ejector rod is ejected, the ejection oil way is in a zero pressure state, under the drive of the reset spring, the two-position four-way hydraulic control valve moves towards the direction of the first working position, when the second ejector rod is ejected in place, the second end of the second detection channel is communicated with the third working oil port, the second end of the third detection channel is connected with the fourth working oil port, and at the moment, the hydraulic cylinder can be ejected normally to indicate that the second ejector rod is in a non-clamping state.
The hydraulic cylinder is provided with a stroke detection mechanism for detecting the ejection stroke of the hydraulic cylinder. Whether the hydraulic cylinder is ejected out or not can be accurately monitored through the stroke detection mechanism, and the detection accuracy is improved.
The stroke detection mechanism is a proximity switch arranged behind the extending end of the piston rod of the hydraulic oil cylinder. Simple structure, with low costs, detect steadily and accurate.
The proximity switch is electrically connected with an external PLC processor. Because the built-in PLC of each machine tool is different, an independent module is formed by an external PLC processor, and only the matched alarm device is needed to be arranged on the machine tool, the external PCL processor is connected with the alarm device, so that the machine tool is not required to be changed mechanically, the time is saved, and the fault rate is reduced.
Compared with the prior art, the utility model has the advantages that: the structure is simple, the parts are few, only a two-position four-way hydraulic control valve is additionally arranged on the original part of the index chuck, a corresponding oil path channel is arranged in the index chuck, and the two-position four-way hydraulic control valve is matched with a detection port arranged on the ejector rod guide cavity and corresponding to the complete ejection position of the ejector rod through a simple oil path, so that the accurate detection on whether the two ejector rods are completely blocked or not is realized, the cost is low, no influence is caused on the whole volume of the index chuck, and the index chuck is suitable for small machine tools.
Drawings
FIG. 1 is a hydraulic schematic diagram of the present utility model with a first ejector pin in place;
fig. 2 is a hydraulic schematic diagram of the present utility model with the second ejector pin in place.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in the figure, the clamping detection device of the full-automatic indexing chuck comprises a clamping detection oil way arranged in the indexing chuck and a hydraulic cylinder 2 arranged outside the indexing chuck, wherein the clamping detection oil way comprises a two-position four-way hydraulic control valve 1, the two-position four-way hydraulic control valve 1 is provided with two working positions and four working oil ports, the two working positions are a first working position 11 and a second working position 12, the four working oil ports are a first working oil port A, a second working oil port B, a third working oil port C and a fourth working oil port D, the first working oil port A is communicated with the second working oil port B, the third working oil port C is communicated with the fourth working oil port D, the first working position 11 is controlled by an ejection oil way 3 of a first ejector rod 5 arranged in the indexing chuck, the second working position 12 is controlled by a reset spring 4, the index chuck is internally provided with a first ejector rod guide cavity 51 for moving the first ejector rod 5 and a second ejector rod guide cavity 61 for moving the second ejector rod 6, a first ejection in-place detection port 52 communicated with the first ejector rod guide cavity 51 is arranged on the first ejector rod guide cavity 51 corresponding to the complete ejection position of the first ejector rod 5, a second ejection in-place detection port 62 communicated with the second ejector rod guide cavity 61 is arranged on the second ejector rod guide cavity 61 corresponding to the complete ejection position of the second ejector rod 6, a first detection channel 7, a second detection channel 8 and a third detection channel 9 are arranged in the index chuck, the first detection channel 7 is arranged between the first ejector rod guide cavity 51 and the two-position four-way hydraulic control valve 1, a first end of the first detection channel 7 is communicated with the first ejection in-place detection port 52, the second detection channel 8 is arranged between the second ejector rod guide cavity 61 and the two-position four-way hydraulic control valve 1, and the first end of the second detection channel 8 is communicated with the second ejection in-place detection port 62, the third detection channel 9 is arranged between the two-position four-way hydraulic control valve 1 and the hydraulic cylinder 2, and the first end of the third detection channel 9 is communicated with the rodless cavity 21 of the hydraulic cylinder 2.
In this specific embodiment, the hydraulic cylinder 2 has a stroke detection mechanism for detecting the ejection stroke of the hydraulic cylinder 2. Whether the hydraulic cylinder 2 is ejected out or not can be accurately monitored through the stroke detection mechanism, and the detection accuracy is improved.
In this particular embodiment, the stroke detection mechanism is a proximity switch 110 provided behind the extended end of the piston rod 21 of the hydraulic cylinder 2. Simple structure and stable detection. Simple structure, with low costs, detect steadily and accurate.
In this embodiment, the proximity switch 110 is electrically connected to an external PLC processor 10. Because the built-in PLC of each machine tool is different, an independent module is formed by an external PLC processor 10, and only the matched alarm device is needed to be arranged on the machine tool, the external PCL processor 10 is connected with the alarm device, so that the machine tool is not required to be modified, the time is saved, and the fault rate is reduced.
The specific principle is as follows: the first ejector rod 5 is ejected, the ejection oil way 3 is in high pressure, the two-position four-way hydraulic control valve 1 is driven to move towards the direction of the return spring 4, when the first ejector rod 5 is ejected in place, the second end of the first detection channel 7 is communicated with the first working oil port A, the second end of the third detection channel 9 is communicated with the second working oil port B, the hydraulic cylinder 2 can be ejected normally at the moment, the proximity switch 110 detects the piston rod 21 of the hydraulic cylinder 2 and sends a signal to the PLC processor 10, the first ejector rod 5 is in a non-clamping state at the moment, and an alarm device on a machine tool does not work; when the first ejector rod 5 is not ejected in place, the second end of the first detection channel 7 cannot be communicated with the first working oil port A, the second end of the third detection channel 9 cannot be communicated with the second working oil port B, the hydraulic cylinder 2 cannot be ejected at the moment, the proximity switch 110 cannot detect the piston rod 21 of the hydraulic cylinder 2, at the moment, the proximity switch 110 does not transmit a signal to the PLC processor 10, the first ejector rod 5 is in a clamping state, and an alarm device on a machine tool sends out a clamping alarm; the first ejector rod 5 is retracted, the second ejector rod 6 is ejected, the ejection oil way 3 is in a zero pressure state, the two-position four-way hydraulic control valve 1 moves towards the direction of the first working position 11 under the drive of the reset spring 4, when the second ejector rod 6 is ejected in place, the second end of the second detection channel 8 is communicated with the third working oil port C, the second end of the third detection channel 9 is communicated with the fourth working oil port D, the hydraulic cylinder 2 can be ejected normally at the moment, the proximity switch 110 detects the piston rod 21 of the hydraulic cylinder 2 and sends a signal to the PLC processor 10, the second ejector rod 6 is in a non-clamping state at the moment, and an alarm device on a machine tool does not work; when the second ejector rod 6 is not ejected in place, the second end of the second detection channel 8 cannot be communicated with the third working oil port C, the second end of the third detection channel 9 cannot be communicated with the fourth working oil port D, the hydraulic cylinder 2 cannot be ejected at the moment, the proximity switch 110 cannot detect the piston rod 21 of the hydraulic cylinder 2, the proximity switch 110 does not transmit signals to the PLC processor 10 at the moment, the second ejector rod 6 is in a clamping state, and an alarm device on a machine tool sends out a clamping alarm.
Claims (4)
1. The device is characterized by comprising a clamping detection oil way arranged in the indexing chuck and a hydraulic cylinder arranged outside the indexing chuck, wherein the clamping detection oil way comprises a two-position four-way hydraulic control valve, the two-position four-way hydraulic control valve is provided with two working positions and four working oil ports, the two working positions are a first working position and a second working position, the four working oil ports are a first working oil port, a second working oil port, a third working oil port and a fourth working oil port, the first working oil port is communicated with the second working oil port, the third working oil port is communicated with the fourth working oil port, the first working position is controlled by an ejection oil way of a first ejector rod arranged in the indexing chuck, the second working position is controlled by a reset spring, the index chuck is internally provided with a first ejector rod guide cavity for the first ejector rod to move and a second ejector rod guide cavity for the second ejector rod to move, a first ejection in-place detection port communicated with the first ejector rod guide cavity is arranged on the first ejector rod guide cavity corresponding to the complete ejection position of the first ejector rod, a second ejection in-place detection port communicated with the second ejector rod guide cavity is arranged on the second ejector rod guide cavity corresponding to the complete ejection position of the second ejector rod, a first detection channel, a second detection channel and a third detection channel are arranged in the index chuck, the first detection channel is arranged between the first ejector rod guide cavity and the two-position four-way hydraulic control valve, the first end of the first detection channel is connected with the first ejection in-place detection port, the second detection channel is arranged between the second ejector rod guide cavity and the two-position four-way hydraulic control valve, the first end of the second detection channel is connected with the second ejection in-place detection port, the third detection channel is arranged between the two-position four-way hydraulic control valve and the hydraulic cylinder, and the first end of the third detection channel is communicated with the rodless cavity of the hydraulic cylinder.
2. The apparatus for detecting seizing up of a full-automatic index chuck as set forth in claim 1, wherein said hydraulic cylinder has a stroke detecting mechanism for detecting an ejection stroke of said hydraulic cylinder.
3. The apparatus of claim 2, wherein the travel detection mechanism is a proximity switch disposed behind an extended end of a piston rod of the hydraulic cylinder.
4. The apparatus of claim 3, wherein the proximity switch is electrically connected to an external PLC processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397042.XU CN219113570U (en) | 2022-06-01 | 2022-06-01 | Clamping detection device of full-automatic indexing chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397042.XU CN219113570U (en) | 2022-06-01 | 2022-06-01 | Clamping detection device of full-automatic indexing chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219113570U true CN219113570U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221397042.XU Active CN219113570U (en) | 2022-06-01 | 2022-06-01 | Clamping detection device of full-automatic indexing chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219113570U (en) |
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2022
- 2022-06-01 CN CN202221397042.XU patent/CN219113570U/en active Active
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