CN218598492U - Machining center hydraulically operated fixture pressure keeps ware - Google Patents
Machining center hydraulically operated fixture pressure keeps ware Download PDFInfo
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- CN218598492U CN218598492U CN202222314760.2U CN202222314760U CN218598492U CN 218598492 U CN218598492 U CN 218598492U CN 202222314760 U CN202222314760 U CN 202222314760U CN 218598492 U CN218598492 U CN 218598492U
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Abstract
The utility model discloses a machining center hydraulically operated fixture pressure keeps ware, including the electromagnetic directional valve, the power structure, the hydraulic pressure oil pump, the switching-over structure, two-way hydraulic pressure lock, the tubular cross, press from both sides tight hydro-cylinder, the power structure is connected to the hydraulic pressure oil tank, power structure and hydraulic pressure oil pump connection, hydraulic pressure oil pump and switching-over structural connection, switching-over structure and two-way hydraulic pressure lock are connected, two-way hydraulic pressure lock is provided with two oil-outs and two oil inlets, one set of oil-out wherein constitutes the return circuit with oil inlet and switching-over structural connection, another set of oil-out and oil inlet and press from both sides tight hydro-cylinder and tubular cross connect gradually and constitute the return circuit, set up electronic pressure switch and accumulator on the tubular cross. The power structure and the hydraulic oil pump are started and work for a short time only when the hydraulic clamp is clamped and loosened, the operation is stopped in the machining process, the intermittent work is realized, and the synchronous intermittent work of the electromagnetic directional valve and the power structure is realized, so that the good effects of saving energy, reducing the temperature of hydraulic oil and cost and improving efficiency are achieved.
Description
Technical Field
The utility model relates to a hydraulic means field specifically is a machining center hydraulically operated fixture pressure keeps ware.
Background
The hydraulic clamp is a clamp which uses a hydraulic element to replace a mechanical part and realizes automatic positioning, supporting and clamping of a workpiece through hydraulic control. The clamping device has the advantages of large clamping force, reliable clamping, stable work, convenience in use and the like, and is widely applied to scenes such as numerical control machines, machining centers and automatic production lines. The desired fixture is obtained by assembling the selected hydraulic components with the designed mechanical parts.
At present, most of hydraulic elements of a hydraulic clamp system of the existing numerical control machining center are integrated in a hydraulic station, the hydraulic station is provided with a hydraulic motor for keeping the oil pressure of the hydraulic system, the motor is always in a continuous running state in the whole machining process, the hydraulic oil is cooled by adopting a mode that an oil pipe circulates to a radiator and is blown by a fan, the temperature of the hydraulic oil which is cooled and then recirculated to the oil tank is still as high as about 60 ℃, the hydraulic clamp system is always operated in a continuous high-temperature state, related spare parts of the hydraulic station system are easy to damage, and a motor cover and the radiator fan are inconvenient to detach during daily maintenance. And an individual numerical control machining center hydraulic station is also provided with an energy accumulator and is used for preventing a motor from stopping when the power is cut off suddenly and preventing a clamp from losing pressure, so that the machine collision and the cutter damage caused by the loosening of a workpiece are avoided, and the system pressure maintaining time after the power is cut off is short and is only 1-2 seconds generally.
Aiming at the problems that an original numerical control machining center hydraulic clamp system is high in power consumption, high in oil temperature and high in environmental temperature of a system caused by the fact that a hydraulic station oil pump motor is always in a continuous running state in the whole machining process, an original cooling system (an oil pipe circulating cooling module is adopted to pass through a fan cooling mode) is poor in cooling effect, relevant spare parts are prone to damage, motor covers and radiator fans are inconvenient to disassemble during maintenance, and the like, the pressure maintaining system for the energy-saving hydraulic clamp is researched and developed.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a machining center hydraulically operated fixture pressure keeps ware makes power structure and hydraulic oil pump only press from both sides tightly and start and carry out short duration work when loosening at hydraulically operated fixture, and the shutdown realizes its intermittent type formula work in the course of working, realizes the synchronous intermittent type work of electromagnetic directional valve and power structure simultaneously to reach the energy saving, reduce the gentle good effect that reduces cost and increase of hydraulic oil.
The utility model discloses a realize through following technical scheme:
the utility model provides a machining center hydraulic fixture pressure keeps ware, includes electromagnetic directional valve, power structure, hydraulic oil pump, switching-over structure, two-way hydraulic pressure lock, tubular cross, presss from both sides tight hydro-cylinder, and hydraulic oil tank connects power structure, power structure and hydraulic oil pump connection, hydraulic oil pump and switching-over structural connection, switching-over structure and two-way hydraulic pressure lock are connected, two-way hydraulic pressure lock is provided with two oil-outs and two oil inlets, and one of them set of oil-out and oil inlet and switching-over structural connection constitute the return circuit, and another set of oil-out and oil inlet and press from both sides tight hydro-cylinder and tubular cross connect gradually and constitute the return circuit, set up electronic pressure switch and accumulator on the tubular cross.
Furthermore, a one-way valve is arranged between the hydraulic oil pump and the reversing structure, and the output end l of the hydraulic oil pump is connected with an oil inlet k of the one-way valve; an oil outlet j of the one-way valve is connected with an oil inlet P of the reversing structure.
Furthermore, the reversing structure adopts a three-position four-way electromagnetic reversing valve, and an oil outlet A of the reversing structure is connected with an oil inlet n of the bidirectional hydraulic lock; and an oil inlet B of the reversing structure is connected with an oil outlet h of the bidirectional hydraulic lock.
Further, the reversing structure comprises an oil outlet T, and the oil outlet T is connected with an oil return port i of the hydraulic oil tank.
Furthermore, the power structure adopts a hydraulic motor.
Furthermore, a filter screen is arranged between the hydraulic oil tank and the power structure, and oil output by the hydraulic oil tank enters the oil inlet m of the power structure after being filtered by the filter screen.
Furthermore, the tubular four-way joint is connected with a pressure switch and an energy accumulator, and the pressure switch and the energy accumulator are arranged in parallel.
Furthermore, the pressure switch is connected with an alternating current contactor, and the alternating current contactor controls the power structure.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a connection relation of magenetic exchange valve, power structure, hydraulic oil pump, switching-over structure, two-way hydraulic pressure lock, tubular cross and clamping cylinder makes power structure and hydraulic oil pump only start and carry out transient work when hydraulic fixture presss from both sides tightly and loosens, and the operation stops in the course of working, realizes its intermittent type formula work, realizes magenetic exchange valve and the synchronous intermittent type work of power structure simultaneously, has reached the energy saving, has reduced the hydraulic oil temperature and has reduced the good effect of cost increase; 2 daily maintenance items in the prior art are reduced, so that the labor intensity is effectively reduced.
Furthermore, the electronic pressure switch realizes a pressure detection function, and a closed pressure maintaining system is formed at the port of the energy accumulator; meanwhile, the energy accumulator and the electronic pressure switch are arranged in parallel, so that the functions of pressure maintaining and pressure detection are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a system connection of a pressure holder of a hydraulic clamp in a machining center according to an embodiment of the present invention;
in the figure: the hydraulic oil tank comprises a hydraulic oil tank 1, a filter screen 2, a power structure 3, a hydraulic oil pump 4, a one-way valve 5, an electromagnetic directional valve 6, a bidirectional hydraulic lock 7, an energy accumulator 8, an electronic pressure switch 9, a tubular four-way valve 10 and a clamping oil cylinder 11.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, the pressure retainer for a hydraulic clamp of a machining center provided in this embodiment includes a hydraulic oil tank 1, a filter screen 2, a power structure 3, a hydraulic oil pump 4, a check valve 5, a reversing structure, a bidirectional hydraulic lock 7, an energy accumulator 8, an electronic pressure switch 9, a tubular four-way joint 10, and a clamping oil cylinder 11.
The components are connected by using a high-pressure oil pipe (M14 x 1.5) and a copper pipe (8 mm), are connected and assembled according to a system diagram, and can run after being tested to be qualified and reliable.
The reversing structure adopts a three-position four-way electromagnetic reversing valve, and the power structure 3 adopts a hydraulic motor;
the embodiment of the utility model provides an in the embodiment of the new energy-saving hydraulic fixture system that provides get rid of the radiator among the prior art, cooling oil pipe, power and cooling fan, make power structure 3 and hydraulic oil pump 4 only press from both sides tightly and start and carry out short work when loosening at hydraulic fixture, the stall in the course of working, realize intermittent type formula work operation, through the control mode who changes the switching-over structure, specifically through loosening and pressing from both sides tightly, make it and power structure 3 synchronous outage intermittent type work when the stall, the energy saving has been realized, reduce the good effect of the warm cost reduction increase of hydraulic oil. Through demolising heat dissipation gas ware and fan, the control mode of effectual change switching-over structure reduces 2 daily maintenance projects and has reduced intensity of labour. The utility model discloses a device is applicable to independent oil feed of hydraulically operated fixture and the relatively longer machining center of production and processing beat.
The utility model discloses concrete structural connection as follows:
the outlet of the hydraulic oil tank 1 is provided with a power structure 3, the power structure 3 is connected with a hydraulic oil pump 4, and the output end l of the hydraulic oil pump 4 is connected with an oil inlet k of a one-way valve 5; the output end of the hydraulic oil pump 4 is connected with the reversing structure through a one-way valve 5, specifically, an oil outlet j of the one-way valve 5 is connected with an oil inlet P of the reversing structure, and an oil outlet T of the reversing structure is connected with an oil return port i of the hydraulic station; an oil outlet A of the reversing structure is connected with an oil inlet n of the bidirectional hydraulic lock 7 through a high-pressure oil pipe, and an oil inlet B of the reversing structure is connected with an oil outlet h of the bidirectional hydraulic lock 7 through a high-pressure oil pipe.
An oil outlet o of the bidirectional hydraulic lock 7 is connected with an oil inlet a of the clamping oil cylinder 11 through a high-pressure oil pipe, and an oil inlet g of the bidirectional hydraulic lock 7 is connected with the f end of the tubular cross 10 through a copper pipe; the end c of the tubular four-way joint 10 is connected with an oil outlet b of the clamping oil cylinder 11 through a high-pressure oil pipe, the end d of the tubular four-way joint 10 is connected with a port of the electronic pressure switch 9 to realize a pressure detection function, and the end e of the tubular four-way joint 10 is connected with a port of the energy accumulator 8 through a copper pipe to form a closed pressure maintaining system; the energy accumulator 8 and the electronic pressure switch 9 are connected with an oil circuit at the clamping end of the oil cylinder in parallel, so that the functions of pressure maintaining and pressure detection are realized.
The electronic pressure switch 9 is connected with a 24V direct-current power supply, and a normally open contact controls the oil pump and the reversing valve to start and stop; the parts of the bidirectional hydraulic lock 7, the energy accumulator 8, the pressure switch 9, the tubular four-way joint 10 and the like are connected by a high-pressure oil pipe and a copper pipe with proper sizes and then are integrated and fixed on the hydraulic oil tank 1,
after the connection is finished, the clamping oil cylinder 11 is fixed on a machine tool workbench, the new system is pressurized and subjected to leak detection, oil leakage of each interface is avoided, the system pressure is kept normal, and the normal operation reliability of the original function is ensured.
The novel device is very suitable for a machining center which is provided with independent oil supply for the hydraulic clamp and has relatively long production machining takt (more than 5 minutes).
The working principle of the hydraulic clamp system is as follows:
when a hydraulic clamp needs to clamp a part, an alternating current contactor is controlled, specifically, a clamping button can be manually pressed, the clamping button controls the alternating current contactor of a hydraulic motor to be attracted, a power structure 3 starts a hydraulic oil pump 4 to operate, a reversing structure clamping position is electrified, hydraulic oil is changed into a clamping oil circuit state from an original oil circuit loosening state, and the clamp is controlled to perform clamping action.
After the hydraulic clamp clamps the parts, the pressure reaches a set value, the electronic pressure switch 9 sends a signal, the hydraulic motor 3 stops, the hydraulic oil pump 4 stops rotating, the bidirectional hydraulic lock 7 is automatically closed, the oil way of the hydraulic system is thoroughly closed, and then the energy accumulator 8 releases the pressure of the leather bag to keep the clamping force unchanged.
In the process, if pressure leaks, the energy accumulator 8 releases pressure to compensate the system, and if the clamping pressure is seriously leaked and is lower than a set value, the electronic pressure switch 9 sends a signal to start the hydraulic motor 3 to maintain the system pressure so as to realize the pressure maintaining function.
The pressure switch 9 monitors the pressure value of the hydraulic system in real time and transmits signals at any time so as to ensure that the hydraulic clamp is always in a safe and reliable clamping state in the whole machining process; when the hydraulic clamp needs to be loosened, the loosening button is manually pressed, the system controls the alternating current contactor of the hydraulic motor 3 to supply power, the hydraulic motor is automatically started, the loosening position of the electromagnetic directional valve is electrified, the hydraulic oil circuit is changed into a state of loosening the oil circuit from the original clamping oil circuit, the clamp is controlled to perform loosening action, and the workpiece can be taken down.
Through calculation and experiment, the utility model provides a machining center hydraulic fixture pressure keeps ware and the continuous operation of former system hydraulic motor and oil pump to compare, and new system hydraulic motor and oil pump only start and carry out short duration work when hydraulic fixture presss from both sides tightly and loosens, and hydraulic motor and oil pump stall in the course of working realize intermittent type formula work operation, have reached energy-conservation and have reduced the good effect of oil temperature.
The converted VMC1300 Qiao Fu vertical machining center equipment trial operation data are used for calculating, and the annual electric charge of the hydraulic motors of the new and old systems is respectively as follows:
(1) Before transformation: the system operates for 330 days in year, is measured and calculated by 20 hours every day, and the power consumption of each system is as follows: 220V × 10A × 330 days × 20 hours/1000 =15970 degrees, and the electricity fee is about 15970 degrees × 0.6 yuan/degree =9583 yuan.
(2) And after transformation: the annual operation time is 330 days, and the annual power consumption is measured to be that the operating time of the intermittent operation motor per day is 0.5 hours: 220V × 10A × 330 days × 0.5 hour/1000 =363 °, and the electric charge 363 × 0.6 yuan/degree =218 yuan.
The motor saves the electricity charge each year: 9583 yuan-218 yuan =9365 yuan.
2. The control mode (loosening or clamping) of the electromagnetic directional valve is changed, so that the electromagnetic directional valve and the motor synchronously work intermittently when the motor is stopped, the energy-saving effect is achieved, and the electricity charge is saved as follows:
(1) Before transformation: the electromagnetic valve operates for 330 days according to the year, the electricity consumption is calculated 20 hours each day: 0.055kw × 330 days × 20 hours =363 °, and the electricity rate is about 363 ° × 0.6 yuan/degree =218 yuan.
(2) And after transformation: the electromagnetic valve operates for 330 days according to the year, the electricity consumption is calculated by 0.5 hour per day: 0.055kw × 330 days × 0.5 hour =10 °, and the electricity fee is about 10 degrees × 0.6 yuan/degree =6 yuan.
The electromagnetic valve saves electricity charge each year: 218-6 = 212.
3. The new system has removed original radiator and fan, has reduced 2 daily maintenance projects, has optimized the running mode of hydraulic fixture system, has also played energy-conserving cost reduction increase's effect, directly practices thrift the charges of electricity as follows:
the original system radiator fan operates for 330 days per year, and 20 hours per day, the annual power consumption is as follows: 0.03kw × 330 days × 20 hours =198 degrees, and the electricity rate is about 198 degrees × 0.6 yuan/degree =119 yuan.
The new system saves electricity charge each year in total: the motor saves 9365 yuan, the electromagnetic valve saves 212 yuan, and the radiator and the fan directly save 119 yuan, which saves 9696 yuan in total.
Therefore, the novel energy-saving pressure maintaining hydraulic clamp system has the following advantages:
the hydraulic motor runs intermittently, so that the effect of saving energy is achieved, and each hydraulic motor can save about 9365 yuan of electric charge each year; the oil change frequency is effectively reduced, the oil consumption is reduced, and the service lives of the hydraulic oil pump and the sealing element are prolonged; meanwhile, the control mode (loosening or clamping) of the electromagnetic directional valve is changed, so that the electromagnetic directional valve and the motor synchronously work intermittently when the motor stops, the service life of the valve body is prolonged, the effect of saving energy is achieved, and the electricity charge can be saved by about 331 yuan per year.
By adopting the scheme, the radiator, the power supply and the cooling fan are removed, the operation cost is reduced, 2 daily maintenance items are reduced, the labor intensity is reduced, and the electricity charge is directly saved by 119 yuan per year; through the intermittent operation of the oil pump, the oil temperature in the hydraulic station is reduced, and the environmental temperature is reduced along with the reduction of the oil temperature; taking the actual measurement data after the hydraulic station of the VMC1300 Qiao Fu vertical machining center hydraulic clamp system is modified as an example, the temperature of oil in the hydraulic station of the new system is reduced to below 30 ℃ from about the original 65 ℃.
And, under the comparison of the utility model, old system leads to hydraulic pressure station spare parts to damage frequently because of long-term oil temperature height, and 9 platform Qiao Fu of upper cover group are for example, and every oil pump motor group expense of changing the damage is about 700 yuan every year, and new system hydraulic pressure oil temperature falls to 29 ℃, and spare parts fault rate reduces, almost all saves this cost.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein. The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a machining center hydraulic fixture pressure keeps ware, its characterized in that, includes electromagnetic directional valve (6), power structure (3), hydraulic oil pump (4), switching-over structure, two-way hydraulic pressure lock (7), tubular cross (10), presss from both sides tight hydro-cylinder (11), power structure (3) are connected to hydraulic oil tank (1), power structure (3) and hydraulic oil pump (4) are connected, hydraulic oil pump (4) and switching-over structural connection, switching-over structure and two-way hydraulic pressure lock (7) are connected, two-way hydraulic pressure lock (7) are provided with two oil-outs and two oil inlets, and wherein one set of oil-out and oil inlet and switching-over structural connection constitute the return circuit, and another set of oil-out and oil inlet and clamp hydro-cylinder (11) and tubular cross (10) connect gradually and constitute the return circuit, set up electronic pressure switch (9) and energy accumulator (8) on cross (10).
2. The machining center hydraulic clamp pressure retainer according to claim 1, characterized in that a one-way valve (5) is arranged between the hydraulic oil pump (4) and the reversing structure, and an output end l of the hydraulic oil pump (4) is connected with an oil inlet k of the one-way valve (5); an oil outlet j of the one-way valve (5) is connected with an oil inlet P of the reversing structure.
3. The machining center hydraulic clamp pressure retainer according to claim 1, characterized in that the reversing structure adopts a three-position four-way electromagnetic reversing valve, and an oil outlet A of the reversing structure is connected with an oil inlet n of a bidirectional hydraulic lock (7); an oil inlet B of the reversing structure is connected with an oil outlet h of the bidirectional hydraulic lock (7).
4. Machining center hydraulic clamp pressure holder according to claim 1, characterized in that the reversing structure comprises an oil outlet T, which is connected to an oil return i of a hydraulic oil tank (1).
5. A machining center hydraulic clamp pressure holder according to claim 1, characterized in that the power structure (3) employs a hydraulic motor.
6. The machining center hydraulic clamp pressure retainer according to claim 1, characterized in that a filter screen (2) is arranged between the hydraulic oil tank (1) and the power structure (3), and oil output from the hydraulic oil tank (1) enters an oil inlet m of the power structure (3) after being filtered by the filter screen (2).
7. A machining center hydraulic clamp pressure holder according to claim 1, characterized in that the tubular cross (10) connects a pressure switch (9) and an accumulator (8), the pressure switch (9) and the accumulator (8) being arranged in parallel.
8. A machining center hydraulic clamp pressure holder according to claim 1, characterized in that the pressure switch (9) is connected with an ac contactor that controls the power structure (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222314760.2U CN218598492U (en) | 2022-08-31 | 2022-08-31 | Machining center hydraulically operated fixture pressure keeps ware |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222314760.2U CN218598492U (en) | 2022-08-31 | 2022-08-31 | Machining center hydraulically operated fixture pressure keeps ware |
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| Publication Number | Publication Date |
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| CN218598492U true CN218598492U (en) | 2023-03-10 |
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| CN202222314760.2U Active CN218598492U (en) | 2022-08-31 | 2022-08-31 | Machining center hydraulically operated fixture pressure keeps ware |
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- 2022-08-31 CN CN202222314760.2U patent/CN218598492U/en active Active
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