CN115958528A - Grinding clamp of ACME thread pair - Google Patents
Grinding clamp of ACME thread pair Download PDFInfo
- Publication number
- CN115958528A CN115958528A CN202111192731.7A CN202111192731A CN115958528A CN 115958528 A CN115958528 A CN 115958528A CN 202111192731 A CN202111192731 A CN 202111192731A CN 115958528 A CN115958528 A CN 115958528A
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- Prior art keywords
- shaft
- thread pair
- fixed
- screw
- clamp
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- 238000000227 grinding Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims description 29
- 210000004907 gland Anatomy 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention belongs to a clamp, and particularly relates to a grinding clamp of an ACME thread pair. The clamp comprises a clamp head, a vertical rotation driving device and a support, wherein the clamp head is connected with the vertical rotation driving device through a transmission long shaft, and the vertical rotation driving device is fixed on a bench through the support. The invention has the beneficial effects that: the invention can clamp and support the screw thread pair assembly. And can move in two degrees of freedom in the vertical direction and the horizontal direction. The rotation angle indication and positioning can be performed. And finally, grinding the threads by rotating the clamping nut. Meanwhile, the device can also be used for checking the thread contact rate. At present, grinding and contact rate inspection of thread pair assemblies are carried out for many times, and the using effect is good.
Description
Technical Field
The invention belongs to a clamp, and particularly relates to a grinding clamp of an ACME thread pair.
Background
The fuel channel of the heavy water reactor nuclear power station is horizontally and transversely arranged. Before nuclear fuel is replaced, the loading and unloading machine is clamped on the fuel channel end part through the nozzle mechanism in a holding mode, so that the reliable connection between the loading and unloading machine and the fuel channel end part is ensured, the heavy water leakage amount of a main heat transmission system does not exceed the standard, the pressure boundary is kept complete, and then the fuel channel is opened, so that the loading and unloading machine and the fuel channel are connected into a whole. The clamping force of the nozzle of the loading and unloading machine is mainly realized by the transmission of an ACME thread pair, after the loading and unloading machine runs for a long time, the surface of the ACME thread can be abraded, the defects of scratching, biting marks and the like can be generated in the serious process, if the ACME thread transmission efficiency can be seriously influenced by the treatment in time, and the stability of the clamping force can be directly influenced. It is therefore necessary to periodically inspect and grind repair the ACME threads.
The vertical inclination angle of the ACME thread pair needs to be adjusted in the grinding process to ensure the grinding effect, and the thread pair assembly needs to be rotated in the horizontal circumferential direction to complete the grinding of all threads. Because the weight of the whole thread pair mechanism is 50 kilograms), a grinding clamp needs to be designed and manufactured, and the grinding clamp can play the roles of fixing and supporting the thread pair and can also play the roles of rotating the thread pair assembly in the horizontal direction and the vertical direction respectively.
Disclosure of Invention
The invention aims to provide a grinding clamp of an ACME (advanced manufacturing engineering machinery) thread pair, which can clamp and fix the ACME thread pair, has the vertical and horizontal rotating functions, positions the grinding position and finally completes the opposite grinding or contact rate inspection of the thread pair.
The technical scheme of the invention is as follows: the utility model provides a vice grinding anchor clamps of ACME screw thread, includes anchor clamps head, vertical rotation driving device and support, and the anchor clamps head is connected with vertical rotation driving device through the transmission major axis, and vertical rotation driving device passes through the support to be fixed to the bench.
The fixture head include the lead screw seat, lead screw seat fixed connection on the flange, the gland suit has worn the lead screw in the middle of the flange at the outside of flange, the lead screw is located the position cover on lead screw seat upper portion and has been equipped with the conical shaft, be connected with the lead screw flange between lead screw seat and the conical shaft, the conical shaft overcoat has the locating piece, the upper portion of fixed block is provided with the position sleeve, the lead screw passes the position sleeve, the position sleeve overcoat has the backing plate, position sleeve upper portion is provided with the cantilever seat, the spacer pin is with cantilever seat and position sleeve locking location, the position sleeve still is connected with the backstop piece outward, cantilever seat endotheca is equipped with the swing arm axle, the lead screw is connected with the swing arm axle, set up thrust ball bearing between position sleeve and the cantilever seat, the top of thrust ball bearing is provided with first deep groove ball bearing in the cantilever seat, the top of cantilever seat is fixed with the round nut, the upper portion of cantilever seat is provided with tapered roller bearing, the swing arm axle passes tapered roller bearing, the end fixing of swing arm axle has first lug.
The gland is also connected with a lifting ring screw.
And a copper sleeve is arranged between the conical shaft and the flange.
And a cylindrical pin and a spring are arranged in the fixed block.
The vertical rotating device can realize vertical overturning action of a thread auxiliary workpiece and a clamp head and specifically comprises a transmission long shaft, the transmission long shaft is arranged in a shell, one end of the transmission long shaft extends out of the shell and is connected with the clamp head, a second deep groove ball bearing is installed at the joint of the transmission long shaft and the shell, one end of the shell is packaged through an end cover, the other end of the transmission long shaft and the shell is connected with a third deep groove ball bearing, a check ring is arranged on the outer side of the third deep groove ball bearing, the transmission short shaft is fixed on the transmission long shaft, a speed reducer flange is fixed on a port of the shell, the transmission short shaft extends out of a speed reducer flange, the speed reducer is fixed on the speed reducer flange, the transmission short shaft is fixed on the speed reducer, and the speed reducer input extension shaft of the speed reducer is connected with a hand wheel.
And the upper part of the shell is fixedly connected with a second lifting lug.
And a scale ring is fixed on the transmission long shaft at the outer side of the end cover through a sixth screw.
And the end cover is fixed with a pointer through a screw.
The support comprises a support and a bolt and a nut, and the support is fixed on the bench worker table by the bolt and the nut.
The invention has the beneficial effects that: the invention can clamp and support the screw thread pair assembly. And can move in two degrees of freedom in the vertical direction and the horizontal direction. The rotation angle indication and positioning can be carried out. And finally, grinding the threads by rotating the clamping nut. Meanwhile, the device can also be used for checking the thread contact rate. At present, grinding and contact rate inspection of thread assemblies are carried out for many times, and the using effect is good.
Drawings
FIG. 1 is a front view of an ACME thread pair grinding fixture provided in the present invention;
FIG. 2 is a top view of an ACME thread pair milling fixture in accordance with the present invention;
FIG. 3 is a schematic view of an ACME thread sub-assembly.
In the figure: 1 cantilever base, 2 cantilever shaft, 3 first deep groove ball bearing, 4 limit pin, 5 thrust ball bearing, 6 stop block, 7 locating block, 8 gland, 9 first bolt, 10 second bolt, 11 lead screw base, 12 lead screw, 13 lead screw flange, 14 lifting bolt, 15 first copper sleeve, 16 conical shaft, 17 cylindrical pin and spring, 18 locating sleeve, 19 backing plate, 20 second copper sleeve, 21 first screw, 22 conical roller bearing, 23 first lifting lug, 24 second screw, 25 round nut, 26 third bolt, 27 second deep groove ball bearing, 28 second lifting lug, 29 transmission long shaft, 30 third deep groove ball bearing, 31 retainer ring, 32 reducer flange, 33 third screw, 34 fourth screw, 35 transmission flat key, 36 flat key, 37 reducer, 38 cylindrical pin, 39 fourth bolt, 40 support, 41 bolt nut, 42 bench, 43 reducer input extension shaft, 44, 45 jacking bolt, 46 pointer, 47 scale ring, 48 cylindrical pin, 49 fifth bolt, 50 screw, 54 screw clamp screw assembly, 54 clamp screw cap assembly, 62 clamp screw assembly, and clamp screw assembly.
Detailed Description
The invention is further described in detail below with reference to the drawings and specific embodiments.
The grinding fixture for the ACME thread pair is mainly applied to a loading and unloading machine of a heavy water reactor nuclear power plant, can grind and repair the ACME thread pair of the nozzle mechanism of the loading and unloading machine, ensures good matching between the thread pairs, provides stable transmission performance, and ensures the stability of the holding force of the nozzle mechanism of the loading and unloading machine. The screw pair assembly can be firmly fixed and two-directional freedom degree is provided, so that grinding requirements of various angles and ranges can be met. The invention can also be used for grinding and repairing other trapezoidal transmission threads.
Since the screw pair assembly has a heavy weight as a whole and requires polishing at a plurality of angular positions, the polishing jig is required to be able to handle the workpiece while bearing the weight of the workpiece and to rotate the workpiece in two degrees of freedom.
The grinding fixture for the ACME thread pair comprises a support, a vertical rotation driving device and a fixture head, wherein the fixture head is connected with the vertical rotation driving device through a transmission long shaft 29, the vertical rotation driving device is fixed on a bench 42 through the support, the fixture head can realize a horizontal rotation function, the vertical rotation driving device realizes vertical overturning action of a thread pair workpiece 51 and the fixture head, and the support supports the weight of the whole device and the workpiece.
As shown in fig. 1 and 2, the primary function of the clamp head is to perform the clamping and securing of the threaded sub-assembly 51 while enabling the horizontal rotation and positioning. The device specifically comprises a cantilever base 1, a cantilever shaft 2, a first deep groove ball bearing 3, a limit pin 4, a thrust ball bearing 5, a stop block 6, a positioning block 7, a gland 8, a first bolt 9, a second bolt 10, a screw rod base 11, a screw rod 12, a screw rod flange 13, a lifting bolt 14, a first copper bush 15, a conical shaft 16, a cylindrical pin and spring 17, a positioning bush 18, a backing plate 19, a second copper bush 20, a first screw 21, a conical roller bearing 22, a first lifting lug 23, a second screw 24 and a round nut 25, wherein the screw rod base 11 is fixedly connected to the flange through the second bolt 10, the gland 8 is sleeved outside the flange through the first bolt 9, the lifting bolt 14 is further connected to the gland 8, the screw rod 12 penetrates through the middle of the screw rod base 11, the conical shaft 16 is further sleeved on the position of the screw rod 12, which is positioned at the upper part of the screw rod base 11, the screw rod base 11 is connected with the screw rod flange 13, a copper sleeve 15 is arranged between a conical shaft 16 and a flange, a positioning block 7 is sleeved outside the conical shaft 16, a cylindrical pin and a spring 17 are arranged in the fixing block 7, a positioning sleeve 18 is arranged at the upper part of the fixing block 7, a screw rod 12 penetrates through the positioning sleeve 18, a backing plate 19 is sleeved outside the positioning sleeve 18, a second copper sleeve 20 is arranged between the conical shaft 16 and the positioning sleeve 18, a cantilever seat 1 is arranged at the upper part of the positioning sleeve 18, the cantilever seat 1 and the positioning sleeve 18 are locked and positioned by a limiting pin 4, a stop block 6 is further connected outside the positioning sleeve 18, a rotary arm shaft 2 is sleeved in the cantilever seat 1, the screw rod 12 is connected with the rotary arm shaft 2, a thrust ball bearing 5 is arranged between the positioning sleeve 18 and the cantilever seat 1, a first deep groove ball bearing 3 is arranged above the thrust ball bearing 5 in the cantilever seat 1, a round nut 25 is fixed at the top of the cantilever seat 1 through a second screw 24, a conical roller bearing 22 is arranged at the upper part of the cantilever seat 1, the swing arm shaft 2 passes through the tapered roller bearing 22, and a first lifting lug 23 is fixed at the end part of the swing arm shaft 2.
The inside of the clamp head fixes the positioning sleeve 18 and the positioning block 7 on the cantilever shaft 2 through the screw rod 12 and the screw rod seat 11. The swing arm shaft 2 is matched with the tapered roller bearing 22 and the first deep groove ball bearing 3 to provide horizontal rotation movement, and meanwhile, the support effect in the vertical direction is achieved. After the rotation movement is finished, the cantilever base 1 and the positioning sleeve 18 are locked and positioned by the limiting pin 4, and the holding bolt 61 is fixed by the stop block 6. The positioning sleeve 18 is provided with 12 positioning holes which are matched with the limit pin 4, and the rotation angles of 30 degrees and 30-degree multiples of the thread pair assembly 51 in the horizontal direction can be completed according to actual requirements.
The external thread workpiece holding bolt 61 of the thread sub-assembly 51 is fixed on the clamp through the gland 8 and the second bolt 10, and the internal thread workpiece holding nut 62 is sleeved on the external thread workpiece and can be manually and freely rotated.
The vertical rotating device can realize the vertical turning action of the thread pair workpiece 51 and the clamp head, and specifically comprises a second deep groove ball bearing 27, a second lifting lug 28, a transmission long shaft 29, a third deep groove ball bearing 30, a retainer ring 31, a reducer flange 32, a third screw 33, a fourth screw 34, a transmission short shaft 35, a flat key 36, a reducer 37, a cylindrical pin 38, a fourth bolt 39, a reducer input extension shaft 43, a hand wheel 44, a puller bolt 45, a pointer 46, a scale ring 47, a shell 53 and an end cover 54, wherein, the transmission long shaft 29 is arranged in the shell 53, one end of the transmission long shaft 29 extends out of the shell 53 and is connected with the clamp head, a second deep groove ball bearing 27 is arranged at the joint of the transmission long shaft 29 and the shell 53, the second deep groove ball bearing 27 is positioned between the transmission long shaft 29 and the shell 53, one end of the shell 53 is sealed by an end cover 54, as shown in fig. 2, a scale ring 47 is fixed on the transmission long shaft 29 on the outer side of the end cover 54 through a sixth screw 50, a pointer 46 is fixed on the end cover 54 through a screw, a third deep groove ball bearing 30 is arranged on the other end of the transmission long shaft 29 connected with the shell 53, the third deep groove ball bearing 30 is positioned between the transmission long shaft 29 and the shell 53, a retainer ring 31 is arranged on the outer side of the third deep groove ball bearing 30, a transmission short shaft 35 is fixed on the transmission long shaft 29 through a cylindrical pin 38 and a fourth screw 34, a reducer flange 32 is fixed on the port of the shell 53 through a fourth bolt 39, the transmission short shaft 35 extends out of the reducer flange 32, the reducer 37 is fixed on the reducer flange 32 through a third screw 33, the transmission short shaft 35 is fixed on the reducer 37 through a flat key 36, a reducer input extension shaft 43 of the reducer 37 is connected with a hand wheel 44, as shown in fig. 2, the housing 53 is further connected with a tightening bolt 45, and the upper portion of the housing 53 is fixedly connected with a second lifting lug 28.
The speed reducer 37 is driven by the hand wheel 44, the transmission long shaft 29 is driven to rotate by the speed reducer through the transmission short shaft 35, and the transmission long shaft 29 is connected to the clamp head cantilever base 1, so that the clamp head drives the thread pair assembly 51 to rotate in the vertical direction. And a scale ring 47 and a pointer 46 are arranged to mark the rotation angle. And after the rotation is in place, the positioning is carried out through the jacking bolt 45, so that the rotation angle is fixed. 360 deg. rotation of the screw pair assembly 51 in the vertical direction can be achieved.
The support comprises a support 40 and a bolt and a nut 41. The function of the support is to support the weight of the entire device and workpiece. The support 40 is fixed to a bench table 42 by means of bolts and nuts 41.
The steps of the invention for installing the clamp are as follows:
a hanging strip is inserted into the first lifting lug 23 and the second lifting lug 28, and the clamp is lifted to the bench 42 by a crane.
The clamp is fixed on a bench by a fixing bolt and a nut No. 41.
Installing a grinding workpiece:
rotating the hand wheel to enable the clamp head to face upwards and fastening the jacking bolt 45;
removing the gland 8;
coating grinding paste or blue oil on the thread surface of the ACME according to the requirement;
installing a clamping bolt, and fixing the clamping bolt by using a gland 8 and a first bolt 9;
screwing the clamp nut into the clamp bolt and enabling the clamp nut to reach the specified relative position;
the puller bolt 45 is unscrewed, the hand wheel 44 is rotated, the clamp head drives the thread pair assembly 51 to rotate 180 degrees downwards, and the pointer of the scale ring points to 0 degree;
if the contact rate is checked, rotating the clamping nut and measuring the contact rate;
if grinding, rotating the hand wheel 44 to rotate the thread pair assembly to a specified angle, fastening the puller bolt 45, and grinding the ACME thread pair assembly;
if it is desired to rotate the screw pair horizontally, the stop pin 4 is loosened and the locating sleeve 18 and screw pair 51 are rotated to the desired angle. And then locked with a stopper pin 4. The fifth screw 49 is then tightened and the embrace bolt is secured by the stop 6.
Removing the grinding workpiece:
screwing off the holding and clamping nut;
the fifth screw 49 is loosened, and the stop block 6 is removed;
rotating the hand wheel 44 to rotate the clamp head and the clamp holding bolt upwards;
removing the gland 8 and the first bolt 9;
disassembling the clamping bolt;
reinstalling gland 8 and first bolt 9;
the hand wheel 44 is rotated to rotate the gripper head downward.
Claims (10)
1. The utility model provides a grinding anchor clamps of ACME screw thread pair which characterized in that: the clamp comprises a clamp head, a vertical rotation driving device and a support, wherein the clamp head is connected with the vertical rotation driving device through a transmission long shaft, and the vertical rotation driving device is fixed on a bench through the support.
2. The ACME thread pair milling fixture as recited in claim 1, wherein: the fixture head comprises a screw rod seat, the screw rod seat is fixedly connected to a flange, a gland sleeve is arranged outside the flange, a screw rod penetrates through the middle of the screw rod seat, a conical shaft is sleeved at the position, located on the upper portion of the screw rod seat, of the screw rod, a lead screw flange is connected between the screw rod seat and the conical shaft, a positioning block is sleeved outside the conical shaft, a positioning sleeve is arranged on the upper portion of the fixing block, the screw rod penetrates through the positioning sleeve, a base plate is sleeved outside the positioning sleeve, a cantilever seat is arranged on the upper portion of the positioning sleeve, the cantilever seat and the positioning sleeve are locked and positioned by a limiting pin, a stop block is further connected outside the positioning sleeve, a rotating arm shaft is sleeved inside the cantilever seat and connected with the rotating arm shaft, a thrust ball bearing is arranged between the positioning sleeve and the cantilever seat, a first deep groove ball bearing is arranged above the thrust ball bearing inside the cantilever seat, a round nut is fixed at the top of the cantilever seat, a conical roller bearing is arranged on the upper portion of the cantilever seat, the rotating arm shaft penetrates through the conical roller bearing, and a first lifting lug is fixed at the end portion of the rotating arm shaft.
3. The grinding jig for an ACME thread pair of claim 2, wherein: the gland is also connected with a lifting ring screw.
4. The ACME thread pair milling fixture as recited in claim 2, wherein: and a copper sleeve is arranged between the conical shaft and the flange.
5. The grinding fixture of an ACME thread pair as recited in claim 2, wherein: and a cylindrical pin and a spring are arranged in the fixed block.
6. The ACME thread pair milling fixture as recited in claim 1, wherein: the vertical rotating device can realize vertical overturning action of a thread auxiliary workpiece and a clamp head and specifically comprises a transmission long shaft, the transmission long shaft is arranged in a shell, one end of the transmission long shaft extends out of the shell and is connected with the clamp head, a second deep groove ball bearing is installed at the joint of the transmission long shaft and the shell, one end of the shell is packaged through an end cover, the other end of the transmission long shaft and the shell is connected with a third deep groove ball bearing, a check ring is arranged on the outer side of the third deep groove ball bearing, the transmission short shaft is fixed on the transmission long shaft, a speed reducer flange is fixed on a port of the shell, the transmission short shaft extends out of a speed reducer flange, the speed reducer is fixed on the speed reducer flange, the transmission short shaft is fixed on the speed reducer, and the speed reducer input extension shaft of the speed reducer is connected with a hand wheel.
7. The ACME thread pair lapping fixture of claim 6, wherein: and the upper part of the shell is fixedly connected with a second lifting lug.
8. The ACME thread pair lapping fixture of claim 6, wherein: and a scale ring is fixed on the transmission long shaft at the outer side of the end cover through a sixth screw.
9. The ACME thread pair milling fixture as recited in claim 6, wherein: and the end cover is fixed with a pointer through a screw.
10. The grinding fixture of an ACME thread pair as recited in claim 1, wherein: the support comprises a support and a bolt and a nut, and the support is fixed on the bench by the bolt and the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111192731.7A CN115958528A (en) | 2021-10-13 | 2021-10-13 | Grinding clamp of ACME thread pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111192731.7A CN115958528A (en) | 2021-10-13 | 2021-10-13 | Grinding clamp of ACME thread pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115958528A true CN115958528A (en) | 2023-04-14 |
Family
ID=87360369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111192731.7A Pending CN115958528A (en) | 2021-10-13 | 2021-10-13 | Grinding clamp of ACME thread pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115958528A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595593A (en) * | 1943-09-20 | 1947-12-10 | Sheffield Corp | Improvements in or relating to the lapping of screw threads |
| GB770450A (en) * | 1954-04-30 | 1957-03-20 | Dewrance & Company Ltd | A machine for grinding or/and lapping port hole cover interior seatings and a methodof reconditioning a cover seating at a port hole having an internal cover |
| CN104742005A (en) * | 2015-04-21 | 2015-07-01 | 沈阳达明电工机械有限公司 | Device for grinding main steam door valve seat of steam turbine |
| CN105458869A (en) * | 2015-12-29 | 2016-04-06 | 东北石油大学 | Conical face sealing pair grinding fit device with quantitative loading function |
| CN111300237A (en) * | 2020-04-14 | 2020-06-19 | 山东交通学院 | High-precision inner hole sealing spherical surface grinding device |
-
2021
- 2021-10-13 CN CN202111192731.7A patent/CN115958528A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595593A (en) * | 1943-09-20 | 1947-12-10 | Sheffield Corp | Improvements in or relating to the lapping of screw threads |
| GB770450A (en) * | 1954-04-30 | 1957-03-20 | Dewrance & Company Ltd | A machine for grinding or/and lapping port hole cover interior seatings and a methodof reconditioning a cover seating at a port hole having an internal cover |
| CN104742005A (en) * | 2015-04-21 | 2015-07-01 | 沈阳达明电工机械有限公司 | Device for grinding main steam door valve seat of steam turbine |
| CN105458869A (en) * | 2015-12-29 | 2016-04-06 | 东北石油大学 | Conical face sealing pair grinding fit device with quantitative loading function |
| CN111300237A (en) * | 2020-04-14 | 2020-06-19 | 山东交通学院 | High-precision inner hole sealing spherical surface grinding device |
Non-Patent Citations (1)
| Title |
|---|
| 柴成杰;查敏超;韩正铜;: "高效多功能铣床夹具的设计", 工具技术, no. 03, 20 March 2015 (2015-03-20) * |
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