CN211277966U - non-Newtonian fluid phase change clamp applied to grinding - Google Patents
non-Newtonian fluid phase change clamp applied to grinding Download PDFInfo
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- CN211277966U CN211277966U CN201921865896.4U CN201921865896U CN211277966U CN 211277966 U CN211277966 U CN 211277966U CN 201921865896 U CN201921865896 U CN 201921865896U CN 211277966 U CN211277966 U CN 211277966U
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- reversing valve
- air
- cam
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- way joint
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Abstract
The utility model discloses a be applied to abrasive machining's non-Newtonian fluid phase transition anchor clamps, comprising a base plate, two four-way joint seats, the work piece tray, the cam switching-over valve, gasbag and liquid bag, the both ends of work piece tray bottom correspond respectively to be fixed on two four-way joint seats, the cam switching-over valve is fixed in the work piece tray bottom, the cam switching-over valve is equipped with two air inlets and a gas outlet, two air inlets of cam switching-over valve correspond respectively and pass through the trachea with a joint of two four-way joint seats and communicate, the gas outlet of cam switching-over valve communicates with external vacuum generator, the gasbag is located on the work piece tray, the liquid bag is located in the gasbag, be formed with the enclosure space between gasbag and the liquid bag, two four-way joint seats communicate with the enclosure space; through the structure, the clamping of the magnetic workpiece can be realized, the clamping of the non-magnetic workpiece can also be realized, the applicability is strong, and the clamping is pasted along the surface of the workpiece by utilizing the air bag and the liquid bag, so that the special-shaped workpiece clamping device can adapt to various special-shaped workpieces.
Description
Technical Field
The utility model relates to an anchor clamps technical field especially relates to a be applied to abrasive machining's non-Newtonian fluid phase transition anchor clamps.
Background
In the processing of the existing grinding machine, an electromagnetic chuck is often used for clamping workpieces, but the electromagnetic chuck has the defects of incapability of clamping non-magnetic workpieces, poor effect of clamping special-shaped workpieces and long time consumption.
Therefore, a clamp which can clamp both magnetic workpieces and non-magnetic workpieces is urgently needed to be provided, and the clamp is suitable for quickly clamping special-shaped workpieces.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the shortcoming above, provide a be applied to abrasive machining's non-Newtonian fluid phase transition anchor clamps.
In order to achieve the above purpose, the specific scheme of the utility model is as follows:
a non-Newtonian fluid phase change clamp applied to grinding comprises a bottom plate, two four-way joint seats respectively fixed at two ends of the bottom plate, a workpiece tray, a cam reversing valve, an air bag and a liquid bag storing non-Newtonian fluid, the two ends of the bottom of the workpiece tray are respectively and correspondingly fixed on the two four-way joint seats, the cam reversing valve is fixed in the middle of the bottom of the workpiece tray, the cam reversing valve is provided with two air inlets and an air outlet, the two air inlets of the cam reversing valve are respectively communicated with one joint of the two four-way joint seats through air pipes correspondingly, the air outlet of the cam reversing valve is communicated with an external vacuum generator, the air bag is arranged on the workpiece tray, the liquid bag is arranged in the air bag, a closed space is formed between the air bag and the liquid bag, and the two four-way joint seats are respectively communicated with the closed space through the other three joints.
In the utility model discloses, be fixed with annular baffle flange on the periphery of work piece tray.
The utility model discloses in, the cam switching-over valve includes switching-over driving motor, switching-over valve body and eccentric cam, the switching-over valve body is fixed on the work piece tray, be equipped with the recess on the side of switching-over valve body, eccentric cam locates in the recess, switching-over driving motor fixes on the another side that the switching-over valve body is relative, just switching-over driving motor's output activity runs through behind the switching-over valve body and is connected with eccentric cam transmission, it is equipped with two gas circuit passageways to correspond two air inlets in the switching-over valve body, and the one end of two gas circuit passageways is connected with the gas outlet after intercommunication each other, and the other end of two gas circuit passageways is equipped with the case respectively, the one end of case is connected with reset spring, reset spring's the other end top is leaned on the switching-.
The utility model has the advantages that: through the structural arrangement, the clamping of a magnetic workpiece and the clamping of a non-magnetic workpiece can be realized, the applicability is strong, and the clamping is adhered along the surface of the workpiece by utilizing the air bag and the liquid bag, so that the special-shaped workpiece clamping device can adapt to various special-shaped workpieces;
in addition, because the workpiece is mainly stressed by radial force in the grinding process, the air bag and the liquid bag are adopted to clamp and position the workpiece in a coating mode, the radial stress on the workpiece can be well offset, and the workpiece is not easy to deform in the machining process.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged partial schematic view at I of FIG. 2;
fig. 4 is a schematic structural view of the middle four-way joint seat of the present invention;
FIG. 5 is a schematic structural diagram of a cam reversing valve according to the present invention;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;
FIG. 7 is a schematic structural view of a reversing valve body according to the present invention;
description of reference numerals: 1-a bottom plate; 2-four-way joint seat; 3-a workpiece pallet; 4-a cam reversing valve; 41-commutating the drive motor; 42-a diverter valve body; 421-an air inlet; 422-air outlet; 423-grooves; 424-gas path channel; 43-an eccentric cam; 44-a valve core; 45-a return spring; 5-air bag; 6-liquid sac; 7-a closed space; 8-trachea; 9-baffle flange.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying drawings and specific examples, is not intended to limit the scope of the invention.
Non-newtonian fluids are a generic term for a class of fluids in which shear stress and shear strain rate are non-linear, and when subjected to an applied shear stress, the viscosity increases dramatically, a phase transition occurs, and the transition from a liquid state to a solid state occurs. Therefore, the utility model discloses combine this phase transition characteristic of non-Newtonian fluid to design a anchor clamps that are applied to abrasive machining.
As shown in fig. 1 to 7, the non-newtonian fluid phase change clamp applied to grinding in this embodiment includes a base plate 1, two four-way joint seats 2 respectively fixed at two ends of the base plate 1, a workpiece tray 3, a cam reversing valve 4, an air bag 5, and a liquid bag 6 storing non-newtonian fluid, two ends of the bottom of the workpiece tray 3 are respectively and correspondingly fixed on the two four-way joint seats 2, the cam reversing valve 4 is fixed at the middle of the bottom of the workpiece tray 3, the cam reversing valve 4 is provided with two air inlets 421 and an air outlet 422, the two air inlets 421 of the cam reversing valve 4 are respectively and correspondingly communicated with one of the joints of the two four-way joint seats 2 through an air pipe 8, the air outlet 422 of the cam reversing valve 4 is communicated with an external vacuum generator, the air bag 5 is arranged on the workpiece tray 3, and the liquid bag 6 is arranged in the air bag 5, an enclosed space 7 is formed between the air bag 5 and the liquid bag 6, as shown in fig. 3, the four-way joint seats 2 are respectively communicated with the enclosed space 7 through the other three joints, and the air bag 5 and the liquid bag 6 are both made of flexible materials.
According to the non-Newtonian fluid phase change clamp applied to grinding, as shown in FIG. 1, an annular baffle flange 9 is fixed on the periphery of the workpiece tray 3, so that the air bag 5 is limited on the workpiece tray 3, the air bag 5 is effectively prevented from overflowing the workpiece tray 3, and the structure is more reasonable.
The non-newtonian fluid phase transition clamp applied to grinding machining in the embodiment is shown in fig. 5 to 7, the cam reversing valve 4 includes a reversing drive motor 41, a reversing valve body 42 and an eccentric cam 43, the reversing valve body 42 is fixed on the workpiece tray 3, a side face of the reversing valve body 42 is provided with a groove 423, the eccentric cam 43 is arranged in the groove 423, the reversing drive motor 41 is fixed on the other side face opposite to the reversing valve body 42, an output end of the reversing drive motor 41 movably penetrates through the reversing valve body 42 and then is in transmission connection with the eccentric cam 43, two air passage channels 424 are arranged in the reversing valve body 42 corresponding to two air inlets 421, one ends of the two air passage channels 424 are communicated with each other and then are connected with an air outlet 422, the other ends of the two air passage channels 424 are respectively provided with a valve core 44, one end of the valve core 44 is connected, the other end of the return spring 45 abuts against the reversing valve body 42, and the other ends of the two valve cores 44 abut against the eccentric cam 43 under the action of the return spring 45 respectively; when the device is used, the reversing driving motor 41 drives the eccentric cam 43 to rotate, the eccentric cam 43 alternately presses against the valve cores 44 on the left side and the right side, so that the valve cores 44 alternately and correspondingly block the air passage channel 424, namely, the two air inlets 421 are alternately communicated with the air outlet 422 through the air passage channel 424, and the two air inlets 421 are correspondingly communicated with the two four-way joint seats 2, so that the two four-way joint seats 2 are alternately communicated with the air outlet 422, and the two four-way joint seats 2 are distributed on the left side and the right side of the air bag 5.
The specific operation principle of the embodiment is as follows: firstly, a workpiece is placed on the surface of an air bag 5, the workpiece sinks under the action of gravity until a workpiece tray 3 supports the workpiece, at the moment, non-Newtonian fluid in a liquid bag 6 coats the immersed part of the workpiece, the position and the state of the workpiece are determined, then an external vacuum generator is opened, the external vacuum generator enables air in a closed space 7 to enter a four-way joint seat 2, enter a cam reversing valve 4 from the four-way joint seat 2 and an air pipe 8 and then be exhausted from an air outlet 422 of the cam reversing valve 4, so that the closed air is in a vacuum state, then the air bag 5 contracts under the action of atmospheric pressure, and meanwhile extrudes the liquid bag 6, so that the viscosity of the non-Newtonian fluid in the liquid bag 6 is sharply increased under the action of external shearing stress, the non-Newtonian fluid is converted from a liquid state into a solid state, the workpiece is coated and positioned, and the cam reversing valve 4 works after the coating and positioning, the two air inlets 421 are alternately communicated with the air outlets 422, so that the pumping direction of the air path can be periodically changed, namely, the left end and the right end of the closed space 7 are alternately communicated with the air outlets 422 to generate a periodically pulsating extrusion force to act on the liquid bag 6, so that the non-Newtonian fluid is kept in a solid state to provide a continuous clamping force, the clamping of a workpiece is completed, and then the workpiece is ground by using a grinding machine;
after the workpiece is ground, the workpiece needs to be released, the external vacuum generator is disconnected, the cam reversing valve 4 stops working, pressure in the air bag 5 is recovered, the liquid bag 6 is extruded and disappears, the non-Newtonian fluid loses shear stress, and the non-Newtonian fluid is converted from a solid state to a liquid state, so that the workpiece is released.
Through the structural arrangement, the clamping of a magnetic workpiece and the clamping of a non-magnetic workpiece can be realized, the applicability is strong, and the air bag 5 and the liquid bag 6 are attached along the surface of the workpiece, so that the special-shaped workpiece can be quickly clamped;
in addition, because the workpiece is mainly stressed by radial force in the grinding process, the air bag 5 and the liquid bag 6 are adopted to clamp and position the workpiece in a coating mode, the radial stress on the workpiece can be well offset, and the workpiece is not easy to deform in the machining process.
The above is only a preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the protection scope of the present invention.
Claims (3)
1. The non-Newtonian fluid phase change clamp applied to grinding is characterized by comprising a bottom plate (1), two four-way joint seats (2) respectively fixed at two ends of the bottom plate (1), a workpiece tray (3), a cam reversing valve (4), an air bag (5) and a liquid bag (6) storing non-Newtonian fluid, wherein two ends of the bottom of the workpiece tray (3) are respectively and correspondingly fixed on the two four-way joint seats (2), the cam reversing valve (4) is fixed in the middle of the bottom of the workpiece tray (3), the cam reversing valve (4) is provided with two air inlets (421) and an air outlet (422), the two air inlets (421) of the cam reversing valve (4) are respectively and correspondingly communicated with a joint of the two four-way joint seats (2) through an air pipe (8), and the air outlet (422) of the cam reversing valve (4) is communicated with an external vacuum generator, the air bag (5) is arranged on the workpiece tray (3), the liquid bag (6) is arranged in the air bag (5), a closed space (7) is formed between the air bag (5) and the liquid bag (6), and the four-way joint seat (2) is communicated with the closed space (7) through another three joints respectively.
2. The non-Newtonian fluid phase change clamp applied to grinding machining according to claim 1, wherein an annular baffle flange (9) is fixed on the periphery of the workpiece tray (3).
3. The non-Newtonian fluid phase change clamp applied to grinding according to claim 1, wherein the cam reversing valve (4) comprises a reversing drive motor (41), a reversing valve body (42) and an eccentric cam (43), the reversing valve body (42) is fixed on the workpiece tray (3), a groove (423) is formed in one side surface of the reversing valve body (42), the eccentric cam (43) is arranged in the groove (423), the reversing drive motor (41) is fixed on the other side surface opposite to the reversing valve body (42), an output end of the reversing drive motor (41) movably penetrates through the reversing valve body (42) and then is in transmission connection with the eccentric cam (43), two air passage channels (424) are formed in the reversing valve body (42) corresponding to the two air inlets (421), and one ends of the two air passage channels (424) are connected with the air outlet (422) after being communicated with each other, the other ends of the two air passage channels (424) are respectively provided with a valve core (44), one end of each valve core (44) is connected with a return spring (45), the other end of each return spring (45) abuts against the reversing valve body (42), and the other ends of the two valve cores (44) respectively abut against the eccentric cam (43) under the action of the return springs (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865896.4U CN211277966U (en) | 2019-11-01 | 2019-11-01 | non-Newtonian fluid phase change clamp applied to grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865896.4U CN211277966U (en) | 2019-11-01 | 2019-11-01 | non-Newtonian fluid phase change clamp applied to grinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211277966U true CN211277966U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921865896.4U Expired - Fee Related CN211277966U (en) | 2019-11-01 | 2019-11-01 | non-Newtonian fluid phase change clamp applied to grinding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110744447A (en) * | 2019-11-01 | 2020-02-04 | 兰泽(荆门)智能科技有限公司 | non-Newtonian fluid phase change clamp applied to grinding |
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2019
- 2019-11-01 CN CN201921865896.4U patent/CN211277966U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110744447A (en) * | 2019-11-01 | 2020-02-04 | 兰泽(荆门)智能科技有限公司 | non-Newtonian fluid phase change clamp applied to grinding |
| CN110744447B (en) * | 2019-11-01 | 2021-06-29 | 兰泽(荆门)智能科技有限公司 | non-Newtonian fluid phase change clamp applied to grinding |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 Termination date: 20211101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |