CN202804712U - Device for preventing vacuum clamp of numerical control machine tool from losing effect - Google Patents
Device for preventing vacuum clamp of numerical control machine tool from losing effect Download PDFInfo
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- CN202804712U CN202804712U CN201220467590.5U CN201220467590U CN202804712U CN 202804712 U CN202804712 U CN 202804712U CN 201220467590 U CN201220467590 U CN 201220467590U CN 202804712 U CN202804712 U CN 202804712U
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Abstract
The utility model relates to a device for preventing a vacuum clamp of a numerical control machine tool from losing effect; a vacuum pipeline provides a working vacuum source for the vacuum clamp, and the vacuum degree of the vacuum pipeline is detected by a vacuum meter; a proximity sensor is used for maintaining a gap between a work piece and the vacuum clamp to be within a permissible range, and the volume of cooling fluid which enters the vacuum clamp is controlled; a vacuum filter is used for collecting water in the vacuum pipeline; a drainage electromagnetic valve is used for automatically draining water; the water is drained when the work piece is changed; a control circuit is used for monitoring a workflow and is linked with the numerical control machine tool; and the device for preventing the vacuum clamp of the numerical control machine tool from losing effect has the beneficial effects that the liquid of the vacuum pipeline is automatically drained, so that the vacuum clamp works normally; and a normal processing technique is not affected, the device is not interfered by artificial factors, and the safety of equipment and the reliable of a production process are ensured.
Description
Technical field
The utility model belongs to the metal working machine tool frock, relates in particular to a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents.
Background technology
Digit Control Machine Tool is the metal-working plant of automation, and the anchor clamps that Digit Control Machine Tool uses guarantee the product processing quality important role to realizing process automation; Vacuum fixture is a kind of easy and simple to handle, laborsaving and mechanization frock that precision is high, is particularly suitable for the clamping of thin-wall workpiece, is widely used in Digit Control Machine Tool processing.When Digit Control Machine Tool uses vacuum fixture, when using again the cooling fluid processing work simultaneously, the part cooling fluid can be inhaled into vacuum fixture the slit between vacuum fixture and workpiece, thereby be inhaled in the vacuum line, can cause vacuum failure when serious, workpiece is loosening and even break away from vacuum fixture, makes workpiece not reach machining accuracy, or damages cutter and equipment.Have now and prevent that the method for vacuum failure from being by the physics liquid-level difference principle; draw high the position of vacuum generator gas or vacuum source entrance, make its anchor clamps and vacuum port have higher drop, prevent that cooling fluid from sucking; cooling fluid is not refluxed, play the effect of protection vacuum generator.But in actual the use, owing to use cooling fluid, vacuum fixture tends to suck the too much water yield and causes vacuum failure, thereby all needs artificial drainage in practical operation at every turn, thereby has increased operating personnel's workload, is unfavorable for realizing the automation of production process; Prior problem is, adopts artificial drainage can't guarantee its reliability, in case cooling fluid refluxes, vacuum fixture lost efficacy because negligence of operation causes, can cause workpiece loosening, the generation accident.
Summary of the invention
The purpose of this utility model is to propose a kind of Digit Control Machine Tool vacuum fixture disabling device technical scheme that prevents, automatically gets rid of the cooling fluid in the vacuum line under the condition that does not change original operation technological process, does not need manual intervention, guarantees the vacuum fixture normal operation.
To achieve these goals, the technical solution of the utility model is: a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents comprises vacuum source, is used for vacuum fixture, vacuum line, the control circuit of clamping workpiece; Described vacuum line connects vacuum source and vacuum fixture, in vacuum line, be provided with vacuum filter and vacuum meter, described vacuum filter is positioned at the extreme lower position of whole vacuum line, the air inlet of vacuum filter connects the vacuum line that leads to vacuum fixture, the gas outlet of vacuum filter connects the vacuum line that leads to vacuum source, is provided with drain solenoid valve in the discharge outlet of vacuum filter; In the vacuum line that connects vacuum source and vacuum filter, be provided with described vacuum meter; Described vacuum fixture is provided with proximity transducer; Described control circuit connects described vacuum meter, drain solenoid valve, proximity transducer and Digit Control Machine Tool.
Described vacuum source is factory's central vacuum system pipeline, is provided with the startup magnetic valve in the junction of described central vacuum system pipeline and described vacuum line.
Described vacuum source also can be vacuum generator, and vacuum generator can be one, or many parallel connections; The air supply opening of described vacuum generator connects a startup magnetic valve and connects, and starts magnetic valve and is connected with a compressed air line; Described compressed air line is provided with the Auto-drainage three linked piece; The air inlet of Auto-drainage three linked piece is connected with the compressed air gas source pipeline, and the gas outlet of Auto-drainage three linked piece is connected with described startup magnetic valve; The vacuum port of described vacuum generator is connected with described vacuum line; The pressure of described compressed air gas source is greater than 0.6mPa.
The vacuum suction area of described vacuum fixture is less than 5000 square centimeters; Described proximity transducer is two at least, and the detecting head of proximity transducer is positioned at the contact-making surface position of workpiece and vacuum fixture, and the gap between signal designation workpiece and the vacuum fixture contact-making surface of putting in place of proximity transducer is less than 0.3mm.
The vacuum of described vacuum line is 85-90kPa; The caliber of described vacuum line is 15 millimeters to 25 millimeters, and the length of vacuum line is not more than 6 meters; Wherein vacuum filter is not more than 3 meters to the vacuum line length between the vacuum fixture, and vacuum filter to the vacuum line length between the vacuum source is not less than 1.5 meters; Vacuum filter to any one section gradient of the vacuum line between the vacuum source is not less than 5%; Vacuum filter to any one section gradient of the vacuum line between the vacuum fixture is not less than 10%.
When using described vacuum generator that the working vacuum source of vacuum fixture is provided, need to use compressed air as the operation power source of vacuum generator, be installed in start and the shutdown of the startup solenoid control vacuum generator in the compressed air line; When adopting many parallel connection vacuum generators, can be provided with the device reliability service that the system redundancy more than ensures.
The beneficial effects of the utility model are: automatically get rid of the cooling fluid in the vacuum line under the condition that does not change original operation technological process, do not need manual intervention, the normal operation of assurance vacuum fixture, ensured the machining accuracy of workpiece and protected process equipment and cutter, production procedure is normally carried out; Also effectively protect vacuum generator, improved the service life of vacuum generator; Adopt self-draining arrangement also for realizing that further condition has been created in process automation in the future.
Below in conjunction with drawings and Examples the utility model being done one describes in detail.
Description of drawings
Fig. 1 be adopt vacuum generator prevent Digit Control Machine Tool vacuum fixture disabling device schematic diagram;
Fig. 2 be adopt the central vacuum system pipeline prevent Digit Control Machine Tool vacuum fixture disabling device schematic diagram.
The specific embodiment
Embodiment one
Such as Fig. 1, a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents, adopt vacuum generator as vacuum source, comprise compressed air line 1, vacuum generator 2, the vacuum line 3 that connects compressed air gas source, vacuum fixture 4, the control circuit (figure does not mark) that is used for clamping workpiece; Described compressed air line is provided with the startup magnetic valve 5 for UNICOM and closes compression air pipe line; The air supply opening 2-1 of described vacuum generator is connected with compressed air line; The two ends of described vacuum line connect respectively vacuum port 2-2 and the vacuum fixture of vacuum generator; In vacuum line, be provided with vacuum filter 6 and vacuum meter 7, described vacuum filter is positioned at the extreme lower position of whole vacuum line, the air inlet of vacuum filter connects the vacuum line 3-1 that leads to vacuum fixture, the gas outlet of vacuum filter connects the vacuum line 3-2 that leads to vacuum generator, is provided with drain solenoid valve 8 in the discharge outlet of vacuum filter; In the vacuum line that connects vacuum generator and vacuum filter, be provided with described vacuum meter; Described vacuum fixture is provided with proximity transducer 9; Described control circuit connects described startup magnetic valve, vacuum meter, drain solenoid valve, proximity transducer and Digit Control Machine Tool.
Described vacuum generator has used two MSC ZL112 types, and the separate unit maximum vacuum is 84kPa, bleed pressure 0.45mPa; Wherein work can be satisfied the job requirement of vacuum fixture, and another is as the system redundancy of ensuring equipment reliability service.
The pressure of described compressed air gas source is 0.7mPa; Also be provided with ac2000 type Auto-drainage three linked piece 10 on the described compressed air line; The air inlet of Auto-drainage three linked piece is connected with the compressed air gas source pipeline, and the gas outlet of Auto-drainage three linked piece is connected with described startup magnetic valve.
Described Auto-drainage three linked piece is the industrial products that adopt prior art, is comprised of Auto-drainage water-separating gas filter, pressure-reducing valve and oil sprayer.
The vacuum suction area of described vacuum fixture is 3600 square centimeters; At vacuum fixture two OMRON E2C-ED02 type proximity transducers are installed, the probe of proximity transducer is positioned at the position at two diagonal angles of vacuum fixture, the probe of proximity transducer is positioned at the contact-making surface position of workpiece and vacuum fixture, and the gap between signal designation workpiece and the vacuum fixture contact-making surface of putting in place of proximity transducer is less than 0.3mm.
The operating pressure of described vacuum line is lower than (absolute pressure) and is 88kPa; The length of described vacuum line is 4.3 meters, and caliber is 20 millimeters; Wherein vacuum filter is 1.6 meters to the vacuum line length between the vacuum fixture, and vacuum filter to the vacuum line length between the vacuum generator is 2.7 meters; Vacuum filter is not less than 8% to any one section gradient S1 of the vacuum line between the vacuum generator; Vacuum filter is not less than 10% to any one section gradient S2 of the vacuum line between the vacuum fixture.
Described vacuum filter is SMS AMJ4000-03 vacuum moisture filter, and described vacuum meter is FESTO VAM-40 type.
Termination at compressed air line access source of the gas is equipped with gas source valve 11, adopts Q11 type stainless steel ball valve, is used at device maintenance period closes compression air source of the gas.
The described device workflow that prevents that the Digit Control Machine Tool vacuum fixture lost efficacy is controlled by control circuit, and control flow is: workpiece is placed on the vacuum fixture, and the face that is adsorbed and the vacuum fixture adsorption plane of workpiece are sturdy; Press start button, close drain solenoid valve and make vacuum line be in closed state, open and start magnetic valve and make vacuum generator work, workpiece by clamping on vacuum fixture; The signal that puts in place is sent in the workpiece that proximity transducer detects and the gap between the vacuum fixture during all less than 0.3 millimeter, vacuum meter sent and reaches the vacuum signal when absolute pressure of vacuum line was lower than 88kPa, when two proximity transducers all send put in place signal and vacuum meter send reach the vacuum signal after, control circuit sends enabling signal to Digit Control Machine Tool, and Digit Control Machine Tool starts and follow procedure is finished workpiece processing in setting-up time; After the workpiece process finishing, stopping signal is shut down and sent to Digit Control Machine Tool, and control circuit cuts out the vacuum source that starts the solenoid valve shuts vacuum line, changes workpiece; Vacuum meter detects and sends signal after vacuum line returns to standard atmospheric pressure, opens drain solenoid valve, is changing the liquid of getting rid of between workpiece, vacuum generator down period in the vacuum line, until next circulation.
During machine tool processing workpiece, the vacuum that detects vacuum line when vacuum meter changes, and vacuum does not reach the requirement of normal operation, and control circuit will send signal, and Digit Control Machine Tool withdraws from cutter, stops processing, carries out fault and gets rid of.
Process equipment in the present embodiment is numerical control machining center, and workpiece is the aluminum die-casting thin-wall box body, and processing mode comprises brill, mills, boring, tapping, and the single-piece work time spent is less than 20 minutes, and the workpiece replacing time was greater than 1 minute.
Embodiment two
Such as Fig. 2, a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents is provided with the vacuum line 3 identical with embodiment one, is used for vacuum fixture 4, vacuum filter 6, vacuum meter 7, drain solenoid valve 8, proximity transducer 9, control circuit (figure does not mark) and the control flow of clamping workpiece.It is characterized in that vacuum source is factory's central vacuum system pipeline 12, be provided with vacuum line access valve 13 at described central vacuum system pipeline, start magnetic valve 5 and connect described vacuum line access valve 13 and described vacuum line 3.
Above embodiment has following characteristics: use proximity transducer that the slit between workpiece and the anchor clamps is remained within the allowed band, controlled the capacity that cooling fluid enters anchor clamps, prevent that excessive cooling fluid from entering vacuum line, for realizing Auto-drainage, guaranteeing that the vacuum fixture normal operation provides condition; Use the moisture in the vacuum filter collection vacuum line; Use magnetic valve to finish Auto-drainage; Be chosen in draining during the workpiece replacing, do not affect normal processing process, do not need production technology is carried out any change, just exempted artificial drainage work, thereby alleviated manually-operated, and guaranteed reliably carrying out of production procedure, be not subjected to the interference of human factor.
More than execute example automatic cooling fluid of getting rid of in the vacuum line under the condition that does not change original operation technological process, do not need manual intervention, the normal operation of assurance vacuum fixture has ensured the machining accuracy of workpiece and has protected process equipment and cutter, and production procedure is normally carried out; Also effectively protect vacuum generator, improved the service life of vacuum generator; Adopt self-draining arrangement for realizing that further condition has been created in process automation in the future.
Claims (5)
1. one kind prevents Digit Control Machine Tool vacuum fixture disabling device, comprises vacuum source, is used for vacuum fixture, vacuum line, the control circuit of clamping workpiece; It is characterized in that, described vacuum line connects vacuum source and vacuum fixture, in vacuum line, be provided with vacuum filter and vacuum meter, described vacuum filter is positioned at the extreme lower position of whole vacuum line, the air inlet of vacuum filter connects the vacuum line that leads to vacuum fixture, the gas outlet of vacuum filter connects the vacuum line that leads to vacuum source, is provided with drain solenoid valve in the discharge outlet of vacuum filter; In the vacuum line that connects vacuum source and vacuum filter, be provided with described vacuum meter; Described vacuum fixture is provided with proximity transducer; Described control circuit connects described vacuum meter, drain solenoid valve, proximity transducer and Digit Control Machine Tool.
2. a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents according to claim 1, it is characterized in that, described vacuum source is factory's central vacuum system pipeline, is provided with the startup magnetic valve in the junction of described central vacuum system pipeline and described vacuum line.
3. a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents according to claim 1 is characterized in that described vacuum source is vacuum generator, and vacuum generator can be one, or many parallel connections; The air supply opening of described vacuum generator connects a startup magnetic valve, starts magnetic valve and is connected with a compressed air line; Described compressed air line is provided with the Auto-drainage three linked piece; The air inlet of Auto-drainage three linked piece is connected with the compressed air gas source pipeline, and the gas outlet of Auto-drainage three linked piece is connected with described startup magnetic valve; The vacuum port of described vacuum generator is connected with described vacuum line; The pressure of described compressed air gas source is greater than 0.6mPa.
4. a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents according to claim 1 is characterized in that the vacuum suction area of described vacuum fixture is less than 5000 square centimeters; Described proximity transducer is two at least, and the detecting head of proximity transducer is positioned at the contact-making surface position of workpiece and vacuum fixture, and the gap between signal designation workpiece and the vacuum fixture contact-making surface of putting in place of proximity transducer is less than 0.3mm.
5. a kind of Digit Control Machine Tool vacuum fixture disabling device that prevents according to claim 1 is characterized in that the vacuum of described vacuum line is 85-90kPa; The caliber of described vacuum line is 15 millimeters to 25 millimeters, and the length of vacuum line is not more than 6 meters; Wherein vacuum filter is not more than 3 meters to the vacuum line length between the vacuum fixture, and vacuum filter to the vacuum line length between the vacuum source is not less than 1.5 meters; Vacuum filter to any one section gradient of the vacuum line between the vacuum source is not less than 5%; Vacuum filter to any one section gradient of the vacuum line between the vacuum fixture is not less than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220467590.5U CN202804712U (en) | 2012-09-14 | 2012-09-14 | Device for preventing vacuum clamp of numerical control machine tool from losing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220467590.5U CN202804712U (en) | 2012-09-14 | 2012-09-14 | Device for preventing vacuum clamp of numerical control machine tool from losing effect |
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| CN202804712U true CN202804712U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220467590.5U Expired - Lifetime CN202804712U (en) | 2012-09-14 | 2012-09-14 | Device for preventing vacuum clamp of numerical control machine tool from losing effect |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886690A (en) * | 2012-09-14 | 2013-01-23 | 艾蒂盟斯（苏州）压铸电子技术有限公司 | Device and method for preventing vacuum clamp of numerical control machine tool from being failed |
| CN107747569A (en) * | 2017-11-20 | 2018-03-02 | 深圳市创世纪机械有限公司 | A kind of vacuum air-channel and Digit Control Machine Tool |
| CN116494403A (en) * | 2023-06-28 | 2023-07-28 | 沈阳和研科技股份有限公司 | Vacuum gas circuit filtering device and filtering method of dicing saw |
-
2012
- 2012-09-14 CN CN201220467590.5U patent/CN202804712U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886690A (en) * | 2012-09-14 | 2013-01-23 | 艾蒂盟斯（苏州）压铸电子技术有限公司 | Device and method for preventing vacuum clamp of numerical control machine tool from being failed |
| CN107747569A (en) * | 2017-11-20 | 2018-03-02 | 深圳市创世纪机械有限公司 | A kind of vacuum air-channel and Digit Control Machine Tool |
| CN107747569B (en) * | 2017-11-20 | 2024-03-22 | 深圳市创世纪机械有限公司 | Vacuum gas circuit and numerical control machine tool |
| CN116494403A (en) * | 2023-06-28 | 2023-07-28 | 沈阳和研科技股份有限公司 | Vacuum gas circuit filtering device and filtering method of dicing saw |
| CN116494403B (en) * | 2023-06-28 | 2023-10-13 | 沈阳和研科技股份有限公司 | Vacuum gas circuit filtering device and filtering method of dicing saw |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |