CN207634412U - A kind of double-sided grinding machine of quartz ware - Google Patents
A kind of double-sided grinding machine of quartz ware Download PDFInfo
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- CN207634412U CN207634412U CN201721789705.1U CN201721789705U CN207634412U CN 207634412 U CN207634412 U CN 207634412U CN 201721789705 U CN201721789705 U CN 201721789705U CN 207634412 U CN207634412 U CN 207634412U
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- 239000010453 quartz Substances 0.000 title claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 28
- 230000000694 effects Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 238000013507 mapping Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model proposes a kind of double-sided grinding machine of quartz ware, the double-sided grinding machines of quartz ware comprising upper nog plate（92）, lower nog plate（93）And the polishing rack between upper nog plate and lower nog plate（94）, quartz ware can be placed in polishing rack（10）, upper nog plate and hydraulic cylinder（8）It is connected, hydraulic cylinder provides loading force, lower nog plate and variable-frequency motor by upper nog plate to quartz ware（95）It is connected and is rotated by variable-frequency motor and is driven, and propose corase grinding, half fine grinding, fine grinding and the double mill stages of finishing polish four, and different phase has used different upper nog plate on-load pressures and lower nog plate rotating speed, to preferably to the two-sided mill of quartz ware, additionally, due to having used two flow path valves and a three position directional valve, make hydraulic cylinder pressure controllable in pressurization, decompression, when needing pressurize, it only needs three position directional valve being switched to cut-off state, three position directional valve and two flow path valves form dual cut-off sealing at this time.
Description
Technical field
The utility model is related to quartz ware manufacture fields, and in particular to the double-sided grinding machine of quartz ware.
Background technology
In quartz ware manufacture field, two-sided mill is an important processing technology, and especially optical application product all needs
It grinds or polishes, in recent years, the technology of high speed grinding is carried out increasingly on high-speed grinder using the mill of fixed abrasive material
Maturation significantly improves the efficiency of grinding.But double-sided grinding machine in the prior art cannot complete multiple tracks in the same process
Processing, needs multiple clamping and machining.Because multiple working procedure is completed to need to consider various factors on same station, than
If the variation of the pressure-loaded of mill, speed of grinding plate change accordingly, mill on-load pressure etc. is accurately controlled, this series of skill
Art problem is difficult to overcome so that the processing of the two-sided mill of present quartz ware remains in the primary level of comparison.
In view of this, proposing the utility model.
Utility model content
The utility model proposes a kind of double-sided grinding machines for the quartz ware for being capable of providing and becoming on-load pressure, at one
Four corase grinding, half fine grinding, fine grinding and polishing processes are completed on station comprising upper nog plate, lower nog plate and upper nog plate and lower nog plate
Between polishing rack, quartz ware can be placed in polishing rack, upper nog plate is connected with hydraulic cylinder, and hydraulic cylinder is by upper nog plate to stone
Product made in Great Britain provide loading force, and lower nog plate, which is connected with variable-frequency motor and is rotated by variable-frequency motor, to be driven.
Further include first flow path valve comprising the first upper port being connected with the rod chamber of hydraulic cylinder, the first lower port and
First side ports, further include the first spool, and the first spool includes the first necking down between two land and two land, the first valve
When core is located at first position, the first upper port, the first necking down and the first lower port are sequentially connected with；When the first spool is located at second
When setting, sequentially admittance connects with the first lower port for the first upper port, the first unidirectional branch, the first necking down；First side ports and the
One control chamber is connected, and the Fluid pressure of the first control chamber and the first spring collective effect are in the first spool, by the first spool the
One position and second position switching；
Further include second flow path valve comprising the second upper port being connected with the rodless cavity of hydraulic cylinder, the second lower port and
Second side ports, further include the second spool, and the second spool includes the second necking down between two land and two land, the second valve
When core is located at first position, the second upper port, the second necking down and the second lower port are sequentially connected with；When the second spool is located at second
When setting, the second upper port, the second unidirectional branch, the second necking down and the second lower port are sequentially connected with；Second side ports and the second control
Chamber processed is connected, and the Fluid pressure and second spring collective effect of the second control chamber are in the second spool, by the second spool at first
It sets and switches with the second position；
Further include three position directional valve, with A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths, A mouthfuls respectively with the first side ports,
Two lower ports be connected, B mouthful are connected with the first lower port and the second side ports respectively, C mouthfuls be oil return opening be connected with oil groove, D mouthfuls and
Flow-limiting valve is connected；When three position directional valve is located at first state, A mouthfuls are connected with D mouthfuls, and B mouthfuls are connected with C mouthfuls；Work as three position directional valve
When positioned at the second state, A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths are located at cut-off state；When three position directional valve is located at the third state
When, A mouthfuls are connected with C mouthfuls, and B mouthfuls are connected with D mouthfuls.
Further include flow-limiting valve, flow valve core of limiting in current limliting valve body, for for sap cavity, current limliting between current-limiting valve core and liquid outlet
The other side of spool is cushion chamber, and third spring is equipped in cushion chamber, and current-limiting valve core is pressed at liquid outlet in envelope by third spring
Closed state, solution feed pump are connected by supply opening with for sap cavity, and cushion chamber is connect by two on-off valves with oil groove oil return；Current limliting
Spool is equipped with several restricted flow passages, and cushion chamber is connected to by restricted flow passage with for sap cavity；Current-limiting valve core towards for sap cavity side be cone
Shape area, current-limiting valve core are plane area towards cushion chamber side, and the surface area of tapered zone is less than plane area surface area.
Further include controller, controller respectively with pressure sensor, three position directional valve, the feed flow in variable-frequency motor, cover board
Pump, two on-off valves electricly connect.
The application also provides a kind of method of the two-sided mill of quartz ware, uses the two-sided mill of quartz ware as the aforementioned
Device, specially：
1）Quartz ware double-side rough grinding：Hydraulic cylinder increases pressure to F1 by upper nog plate to quartz ware, then variable-frequency electric
Machine is roughly ground with speed S1；
2）Quartz ware two-sided half refines：From F1 to F2, then hydraulic cylinder increases pressure by upper nog plate to quartz ware
Variable-frequency motor carries out half with speed S2 and refines；
3）The two-sided fine grinding of quartz ware：Hydraulic cylinder increases pressure from F2 to F3 by upper nog plate to quartz ware, then becomes
Frequency motor is refined with speed S3；
4）The two-sided finishing polish of quartz ware：From F3 to F4, then hydraulic cylinder reduces pressure by upper nog plate to quartz ware
Variable-frequency motor carries out finishing polish with speed S4；
Wherein, F4<F1<F2<F3；S4<S1<S2<S3.
When the pressure that hydraulic cylinder provides increases,
101）Three position directional valve is placed in first state by controller, and A mouthfuls are connected with D mouthfuls, and B mouthfuls are connected with C mouthfuls；
102）Two on-off valves of flow-limiting valve are opened, cushion chamber（58）Interior fluid is discharged into oil groove（11）, solution feed pump（6）To confession
Sap cavity（59）Supply fluid, current-limiting valve core are pushed to and compress third spring（57）, liquid outlet（53）It is opened；
Second flow path valve（3）Positioned at the second position, oil groove（11）Interior fluid is successively from solution feed pump（6）, for sap cavity（59）、
Liquid outlet（53）, D mouthfuls, A mouthfuls, the second lower port（32）, the second necking down（351）, the second unidirectional branch（37）, the second upper port
（31）, into no bar cylinder（81）；A mouthfuls pass through the first side ports simultaneously（23）First control chamber of connection（24）Fuel feeding, the first valve
Core（25）It is placed in first position, has fluid in bar cylinder from the first upper port（21）, the first necking down（251）, the first lower port,
B mouthfuls, C mouthfuls are back to oil groove；
103）Mapping relations F '+Δ F=Fi, i=1,2,3 is prestored in controller；When controller passes through the pressure in cover board
When sensor detects that current pressure is F ', two on-off valves are closed, and cushion chamber, current-limiting valve core are gradually filled with for the oil in sap cavity
Liquid outlet is moved closer under the resultant force of buffering cavity fluid and third spring, liquid outlet liquid outlet quantity gradually decreases, when controller 1
When detecting that current pressure is Fi by the pressure sensor in cover board, three position directional valve is placed in the second state, A mouthfuls, B mouthfuls, C
Mouthful, four ports of D mouths are located at cut-off state.
When the pressure that hydraulic cylinder provides declines,
201）Three position directional valve is placed in the third state by controller, and A mouthfuls are connected with C mouthfuls, and B mouthfuls are connected with D mouthfuls；
202）Two on-off valves of flow-limiting valve are opened, and buffering cavity fluid is discharged into oil groove, and solution feed pump supplies stream to for sap cavity
Body, current-limiting valve core are pushed to and compress third spring, and liquid outlet is opened；
First flow path valve is located at the second position, and the fluid in oil groove is successively from solution feed pump, for sap cavity, liquid outlet, D mouthfuls, B
Mouth, the first lower port, the first necking down, the first unidirectional branch（27）, the first upper port, into there is bar cylinder；B mouthfuls pass through second simultaneously
For second control chamber of side ports connection for fluid, the second spool is placed in first position, and the fluid in no bar cylinder is from the second upper end
Mouth, the second necking down, the second lower port, A mouthfuls, C mouthfuls be back to oil groove；
203）Mapping relations F "-Δ F=F4 is prestored in controller 1；When controller passes through the pressure sensor in cover board
When detecting that current pressure is F ", two on-off valves 7 are closed, and are gradually filled with cushion chamber for the oil in sap cavity, current-limiting valve core is slow
It rushes under the resultant force of cavity fluid and third spring and moves closer to liquid outlet, liquid outlet liquid outlet quantity gradually decreases, when controller passes through
When pressure sensor in cover board detects that current pressure is F4, three position directional valve is placed in the second state, A mouthfuls, B mouthfuls, C mouthfuls, D mouthfuls
Four ports are located at cut-off state.
Advantageous effect
The utility model advantageous effect has at 3 points：
1）Propose roughly ground on a station, half fine grinding, fine grinding and the double mill stages of finishing polish four, and it is different
Stage has used different upper nog plate on-load pressures and lower nog plate rotating speed, to preferably to the two-sided mill of quartz ware.
2）Further, two flow path valves and a three position directional valve have been used, making hydraulic cylinder, pressure can in pressurization, decompression
Control, when needing pressurize, it is only necessary to three position directional valve are switched to cut-off state, at this time three position directional valve and two flow paths
Valve forms dual cut-off sealing, it is ensured that pressure is constant in process of lapping.
3）Flow-limiting valve is also used, using the mechanical flow-limiting valve function of flow-limiting valve, before closing on pressure predetermined value, reduction pair
The fluid of hydraulic cylinder is supplied, and provides accurate Fluid Volume for hydraulic cylinder, three position directional valve is allow to have time enough accurate
Judge switching time point.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Reference sign
Further clearly to illustrate the connection relation between the structure of the utility model and each component, give following attached
Icon is remembered, and is illustrated.
Controller 1, first flow path valve 2, the first upper port 21, the first lower port 22, the first side ports 23, the first control chamber
24, the first spool 25, the first necking down 251, the first spring 26, the first unidirectional branch 27, second flow path valve 3, the second upper port 31,
Second lower port 32, the second side ports 33, the second control chamber 34, the second spool 35, the second necking down 351, second spring 36, second
Unidirectional branch 37, three position directional valve 4, A mouthfuls, B mouthfuls, C mouthfuls, D mouthfuls, flow-limiting valve 5, current-limiting valve core 51, restricted flow passage 52, liquid outlet
53, tapered zone 54, supply opening 55, plane area 56, third spring 57, cushion chamber 58, for sap cavity 59, solution feed pump 6, two on-off valves
7, hydraulic cylinder 8, no bar cylinder 81 has bar cylinder 82, piston rod 83, cover board 91, upper nog plate 92, lower nog plate 93, polishing rack 94, variable-frequency electric
Machine 95, quartz ware 10, oil groove 11.
Description of symbols through the above attached drawings can be more clearly understood and illustrate in conjunction with the embodiments of the present invention
The technical solution of the utility model.
Specific implementation mode
Referring to Fig. 1, a kind of double-sided grinding machine of quartz ware comprising upper nog plate 92, lower nog plate 93 and upper nog plate are under
Polishing rack 94 between nog plate can place quartz ware 10 in polishing rack, which is characterized in that upper nog plate 92 and 8 phase of hydraulic cylinder
Even, hydraulic cylinder 8 provides loading force by upper nog plate 92 to quartz ware 10, and lower nog plate 93 is connected with variable-frequency motor 95 and by frequency conversion
The rotation driving of motor 95.
Further include first flow path valve 2 comprising the first upper port 21 being connected with the rodless cavity 82 of hydraulic cylinder 8, under first
Port 22 and the first side ports 23, further include the first spool 25, and the first spool 25 includes between two land and two land
First necking down 251, when the first spool 25 is located at first position, the first upper port 21, the first necking down 251 and the first lower port 22 are suitable
Secondary connection；When the first spool 25 is located at the second position, the first upper port 21, the first unidirectional branch 27, the first necking down 251 and
Sequentially admittance connects one lower port 22；First side ports 23 are connected with the first control chamber 24, the Fluid pressure of the first control chamber 24
With 26 collective effect of the first spring in the first spool 25, the first spool 25 is switched in first position and the second position.
Under normal conditions, the first spool 25 of first flow path valve 2 is to be located at the second position under the action of the first spring 26,
And at this point, the land of 251 both sides of the first necking down is by the sealing of 21 direct flow path of the first necking down 251 and the first upper port.When first
After entering fluid in side ports 23, the first spool 25 is pushed to first position, and at this moment the fluid of the first upper port 21 passes through direct
Flow path enters the first necking down 251 hence into the first lower port 22.
Further include second flow path valve 3 comprising the second upper port 31 being connected with the rod chamber 81 of hydraulic cylinder 8, under second
Port 32 and the second side ports 33, further include the second spool 35, and the second spool 35 includes between two land and two land
Second necking down 351, when the second spool 35 is located at first position, the second upper port 31, the second necking down 351 and the second lower port 32 are suitable
Secondary connection；When the second spool 25 is located at the second position, the second upper port 31, the second unidirectional branch 37, the second necking down 351 and
Two lower ports 32 are sequentially connected with；Second side ports 33 are connected with the second control chamber 34, the Fluid pressure of the second control chamber 34 and the
Two springs, 36 collective effect switches in the second spool 35, by the second spool 35 in first position and the second position.
Second flow path valve 3 is consistent with the structure of first flow path valve 2, and which is not described herein again.
Further include three position directional valve 4, with A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths, A mouthfuls respectively with the first side ports
23, the second lower port 32 is connected, and B mouthfuls are connected with the first lower port 22 and the second side ports 33 respectively, and C mouthfuls are oil return opening and oil groove
11 are connected, and D mouthfuls are connected with flow-limiting valve 5；When three position directional valve 4 is located at first state, A mouthfuls are connected with D mouthfuls, B mouthfuls with C mouthfuls of phases
Even；When three position directional valve 4 is located at the second state, A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths are located at cut-off state；When three commutations
When valve 4 is located at the third state, A mouthfuls are connected with C mouthfuls, and B mouthfuls are connected with D mouthfuls.This three position directional valve 4 is common valve mechanism,
Belong to commercial product, therefore, this structure itself does not repeat.But in the prior art, not by two flow path valves of the application and three
What position switching valve was used cooperatively, this influence of fluctuations with the use of removal pump when being to make holding pressure of the application, stream
One-way valve structures and three position directional valve 4 in the valve of road end the flowing that position is provided to cut-out fluid.
Further include flow-limiting valve 5, flow valve core 51 of limiting in current limliting valve body is feed flow between current-limiting valve core 51 and liquid outlet 53
Chamber 59, the other side of current-limiting valve core 51 are cushion chamber 58, are equipped with third spring 57 in cushion chamber 58, and third spring 57 is by flow-limiting valve
It is in closed state that core 51, which is pressed at liquid outlet 53, and solution feed pump 6 is connected by supply opening 55 with for sap cavity 59, and cushion chamber 58 passes through
Two on-off valves 7 are connect with 11 oil return of oil groove；Current-limiting valve core 51 is equipped with several restricted flow passages 52, and restricted flow passage 52 is by cushion chamber
58 are connected to for sap cavity 59；Current-limiting valve core 51 is towards being tapered zone 54 for 59 side of sap cavity, and current-limiting valve core 51 is towards 58 side of cushion chamber
For plane area 56.Since the surface area of tapered zone 54 is less than 56 surface area of plane area, so when current-limiting valve core 51 is static, by
To the pressure of cushion chamber 58 be greater than the pressure for sap cavity 59, so current-limiting valve core 51 will not move, once but cushion chamber 58
Pressure release is greater than the Fluid Volume that restricted flow passage 52 enters cushion chamber 58 by the discharge Fluid Volume of two on-off valves 7, buffers in this way
Pressure in chamber 58 will significantly reduce, so current-limiting valve core 51 will be moved by the pressure for sap cavity 59 to cushion chamber 58.
Similar, two on-off valves 7 are once close, and fluid will enter cushion chamber 58 by restricted flow passage 52, to realize flow-limiting valve
Core 51 is pushed back to liquid outlet 53.
The use of flow-limiting valve 5 is because of when the pressure that hydraulic cylinder 8 is applied to quartz article surface soon reaches predetermined pressure
When, pressure sensor needs accurate feedback pressure change, therefore, it is desirable to reduce the speedup of fluid in rodless cavity, so using current limliting
Valve 5 limits the flow in this stage.
Further include controller 1, controller 1 respectively with pressure sensor, the three position directional valve in variable-frequency motor 95, cover board 91
4,6, two on-off valves 7 of solution feed pump electricly connect.
A kind of method of the two-sided mill of quartz ware uses the double-sided grinding machine of quartz ware as the aforementioned, feature
It is：
1）Quartz ware double-side rough grinding：Hydraulic cylinder 8 increases pressure to F1, then frequency conversion by upper nog plate 92 to quartz ware
Motor 95 is roughly ground with speed S1；
2）Quartz ware two-sided half refines：Hydraulic cylinder 8 increases pressure from F1 to F2, so by upper nog plate 92 to quartz ware
Variable-frequency motor 95 carries out half fine grinding with speed S2 afterwards；
3）The two-sided fine grinding of quartz ware：From F2 to F3, then hydraulic cylinder 8 increases pressure by upper nog plate 92 to quartz ware
Variable-frequency motor 95 is refined with speed S3；
4）The two-sided finishing polish of quartz ware：Hydraulic cylinder 8 reduces pressure from F3 to F4, so by upper nog plate 92 to quartz ware
Variable-frequency motor 95 carries out finishing polish with speed S4 afterwards；
Wherein, F4<F1<F2<F3；S4<S1<S2<S3.
When the pressure that hydraulic cylinder 8 provides increases,
101）Three position directional valve 4 is placed in first state by controller, and A mouthfuls are connected with D mouthfuls, and B mouthfuls are connected with C mouthfuls；
102）Two on-off valves 7 of flow-limiting valve 5 are opened, and fluid is discharged into oil groove 11 in cushion chamber 58, and solution feed pump 6 is to for sap cavity
59 supply fluids, current-limiting valve core 51 are pushed to and compress third spring 57, and liquid outlet 53 is opened；
Second flow path valve 3 is located at the second position, and the fluid in oil groove 11 is successively from solution feed pump 6, for sap cavity 59, liquid outlet
53, D mouthfuls, A mouthfuls, the second lower port 32, the second necking down 351, the second unidirectional branch 37, the second upper port 31, into no bar cylinder 81；
A mouthfuls of 24 fuel feeding of the first control chamber connected simultaneously by the first side ports 23, the first spool 25 are placed in first position, there is bar cylinder
Fluid in 82 is back to oil groove 11 from the first upper port 21, the first necking down 251, the first lower port 22, B mouthfuls, C mouthfuls；
103）Mapping relations F '+Δ F=Fi, i=1,2,3 is prestored in controller 1；When controller 1 passes through in cover board 91
When pressure sensor detects that current pressure is F ', two on-off valves 7 are closed, and cushion chamber is gradually filled with for the oil in sap cavity 59
58, current-limiting valve core 51 moves closer to liquid outlet 53 under the resultant force of buffering cavity fluid and third spring 57, and liquid outlet 53 goes out liquid
Amount gradually decreases, when controller 1 detects that current pressure is Fi by the pressure sensor in cover board 91, three position directional valve 4
It is placed in the second state, A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths are located at cut-off state.
The control of current limliting is embodied in step 103, just when controller detects the pressure for only needing to be further added by Δ F
When can reach predetermined pressure, just starts flow-limiting valve to reduce the fluid supply to rodless cavity 81, also therefore keep controller 1 more accurate
The true time for judging three position directional valve 4 and switching, it is accurately controlled pressure.
When the pressure that hydraulic cylinder 8 provides declines,
201）Three position directional valve 4 is placed in the third state by controller, and A mouthfuls are connected with C mouthfuls, and B mouthfuls are connected with D mouthfuls；
202）Two on-off valves 7 of flow-limiting valve 5 are opened, and fluid is discharged into oil groove 11 in cushion chamber 58, and solution feed pump 6 is to for sap cavity
59 supply fluids, current-limiting valve core 51 are pushed to and compress third spring 57, and liquid outlet 53 is opened；
First flow path valve 2 is located at the second position, and the fluid in oil groove 11 is successively from solution feed pump 6, for sap cavity 59, liquid outlet
53, D mouthfuls, B mouthfuls, the first lower port 22, the first necking down 251, the first unidirectional branch 27, the first upper port 21, into there is bar cylinder 82；
For B mouthfuls of the second control chambers 34 connected simultaneously by the second side ports 33 for fluid, the second spool 35 is placed in first position, no bar
Fluid in cylinder 81 is back to oil groove 11 from the second upper port 31, the second necking down 351, the second lower port 32, A mouthfuls, C mouthfuls；
203）Mapping relations F "-Δ F=F4 is prestored in controller 1；When controller 1 passes through the pressure sensing in cover board 91
When device detects that current pressure is F ", two on-off valves 7 are closed, and cushion chamber 58, flow-limiting valve are gradually filled with for the oil in sap cavity 59
Core 51 moves closer to liquid outlet 53 under the resultant force of buffering cavity fluid and third spring 57, and 53 liquid outlet quantity of liquid outlet gradually subtracts
Few, when controller 1 detects that current pressure is F4 by the pressure sensor in cover board 91, three position directional valve 4 is placed in second
State, A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths are located at cut-off state.
Wherein, Δ F is default preset parameter, and the current-limiting operation of step 203 is similar to step 103, repeats no more.
It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this utility model,
Several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model claims
In protection domain.
Claims (4)
1. a kind of double-sided grinding machine of quartz ware comprising upper nog plate（92）, lower nog plate（93）And upper nog plate and lower nog plate it
Between polishing rack（94）, quartz ware can be placed in polishing rack（10）, which is characterized in that upper nog plate and hydraulic cylinder（8）It is connected,
Hydraulic cylinder provides loading force, lower nog plate and variable-frequency motor by upper nog plate to quartz ware（95）It is connected and is rotated by variable-frequency motor
Driving.
2. the double-sided grinding machine of quartz ware according to claim 1, it is characterised in that：It further include first flow path valve（2）,
It includes and hydraulic cylinder（8）Rod chamber（82）The first connected upper port（21）, the first lower port（22）With the first side ports
（23）, further include the first spool（25）, the first spool includes the first necking down between two land and two land（251）, the
When one spool is located at first position, the first upper port（21）, the first necking down（251）With the first lower port（22）It is sequentially connected with；When
When first spool is located at the second position, the first upper port（21）, the first unidirectional branch（27）, the first necking down（251）Under first
Port（22）Sequentially admittance connects；First side ports are connected with the first control chamber, the Fluid pressure of the first control chamber and the first bullet
Spring collective effect switches in the first spool, by the first spool in first position and the second position；
It further include second flow path valve（3）Comprising the rodless cavity with hydraulic cylinder（81）The second connected upper port, the second lower port
（32）With the second side ports（33）, further include the second spool（35）, the second spool includes between two land and two land
Second necking down（351）, when the second spool is located at first position, the second upper port, the second necking down and the second lower port are sequentially connected with；
When the second spool is located at the second position, the second upper port, the second unidirectional branch, the second necking down and the second lower port sequentially admittance
Connection；Second side ports（33）With the second control chamber（34）It is connected, the Fluid pressure of the second control chamber is made jointly with second spring
For the second spool, the second spool is switched in first position and the second position；
It further include three position directional valve（4）, with A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths, A mouthfuls respectively with the first side ports
（23）, the second lower port（32）Be connected, B mouthfuls respectively with the first lower port（22）With the second side ports（33）It is connected, C mouthfuls are oil return
Mouth and oil groove（11）It is connected, D mouthfuls are connected with flow-limiting valve；Work as three position directional valve（4）When positioned at first state, A mouthfuls are connected with D mouthfuls, B
Mouth is connected with C mouthfuls；When three position directional valve is located at the second state, A mouthfuls, B mouthfuls, C mouthfuls, four ports of D mouths are located at cut-off state；When
When three position directional valve is located at the third state, A mouthfuls are connected with C mouthfuls, and B mouthfuls are connected with D mouthfuls.
3. the double-sided grinding machine of quartz ware according to claim 2, it is characterised in that：It further include flow-limiting valve（5）, current limliting
It limits in valve body flow valve core（51）, current-limiting valve core（51）With liquid outlet（53）Between for for sap cavity（59）, current-limiting valve core（51）
The other side be cushion chamber（58）, cushion chamber is interior to be equipped with third spring（57）, current-limiting valve core is pressed at liquid outlet by third spring
In closed state, solution feed pump（6）Pass through supply opening（55）With for sap cavity（59）It is connected, cushion chamber passes through two on-off valves and oil
Slot oil return connects；Current-limiting valve core is equipped with several restricted flow passages（52）, cushion chamber is connected to by restricted flow passage with for sap cavity；Flow-limiting valve
Core towards for sap cavity side be tapered zone（54）, current-limiting valve core is plane area towards cushion chamber side（56）, tapered zone（54）Surface
Product is less than plane area（56）Surface area.
4. the double-sided grinding machine of quartz ware according to claim 3, it is characterised in that：Further include controller, controller
It is electricly connected respectively with pressure sensor, three position directional valve, solution feed pump, two on-off valves in variable-frequency motor, cover board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721789705.1U CN207634412U (en) | 2017-12-20 | 2017-12-20 | A kind of double-sided grinding machine of quartz ware |
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| CN201721789705.1U CN207634412U (en) | 2017-12-20 | 2017-12-20 | A kind of double-sided grinding machine of quartz ware |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917113A (en) * | 2017-12-20 | 2018-04-17 | 中建材衢州金格兰石英有限公司 | A kind of double-sided grinding machine of quartz ware and its two-sided mill method |
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2017
- 2017-12-20 CN CN201721789705.1U patent/CN207634412U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917113A (en) * | 2017-12-20 | 2018-04-17 | 中建材衢州金格兰石英有限公司 | A kind of double-sided grinding machine of quartz ware and its two-sided mill method |
| CN107917113B (en) * | 2017-12-20 | 2023-07-25 | 中建材衢州金格兰石英有限公司 | Double-sided grinding device and double-sided grinding method for quartz products |
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