CN114932270A - Processing method for attaching nut block to surface of lead screw - Google Patents
Processing method for attaching nut block to surface of lead screw Download PDFInfo
- Publication number
- CN114932270A CN114932270A CN202210727417.2A CN202210727417A CN114932270A CN 114932270 A CN114932270 A CN 114932270A CN 202210727417 A CN202210727417 A CN 202210727417A CN 114932270 A CN114932270 A CN 114932270A
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- nut
- grinding wheel
- consolidation
- screw rod
- nut block
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- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000007596 consolidation process Methods 0.000 claims abstract description 82
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 claims 1
- 229910001651 emery Inorganic materials 0.000 description 8
- 239000011295 pitch Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a processing method for attaching a nut block to the surface of a screw rod, which comprises the steps of S1, connecting the screw rod and a consolidation grinding wheel to form a component to be ground; s2, processing the spiral surface of the component to be ground through a thread grinder; s3, detaching the consolidation grinding wheel from the screw rod and mounting the consolidation grinding wheel on a nut sleeve grinding machine, attaching a plurality of nut blocks on the consolidation grinding wheel and limiting and mounting the nut blocks through nut block positioning sleeves; s4 the nut sleeve grinder limits the rotation of the plurality of nut blocks and the nut block positioning sleeves, drives the consolidation grinding wheel to rotate positively and negatively, and grinds the spiral surfaces of the plurality of nut blocks to be attached to the spiral surfaces of the consolidation grinding wheel. Compared with the prior art, the screw thread grinding machine has the advantages that the consolidation grinding wheel and the screw thread on the screw rod are simultaneously processed through the screw thread grinding machine, the consolidation grinding wheel is detached from the screw rod and is installed on the thread sleeve grinding machine, and the helicoids of the plurality of nut blocks which are installed on the consolidation grinding wheel in a fitting mode are ground, so that the plurality of nut blocks which are ground can be attached to the screw rod, namely the screw thread of the nut block is not damaged, meanwhile, the grinding precision can be guaranteed, and the processing efficiency is high.
Description
Technical Field
The invention relates to the technical field of nut block installation, relates to nut block helicoid processing, and particularly relates to a processing method for attaching a nut block to the surface of a screw rod.
Background
The static pressure nut is provided with an oil groove, in order to facilitate processing, a nut assembly is formed by splicing a plurality of nut blocks obtained by axially cutting the nut, local deformation of internal threads of the nut blocks obtained by cutting can be caused during nut cutting, and splicing errors can occur at the butt joint of internal threads between adjacent nut blocks during splicing; and when processing nut internal thread and lead screw external screw thread respectively, inevitably can produce the helicoid error, lead to the problem of not laminating with the lead screw external screw thread.
Some patents, such as patent No. CN114273879A, provide a gap processing method for a static pressure lead screw pair, in which a processing method of applying external force for pressing or electrical processing is adopted in step two to make the nut sleeve and the lead screw completely fit, the processing method of applying external force for pressing can damage the multi-segment nut block threads that form the nut sleeve, and the processing method of electrical processing is slow in processing, affects the processing efficiency, and is not strong in practicability.
Disclosure of Invention
The invention aims at solving the problems that internal threads are easy to damage or the processing efficiency is low when a static pressure nut with an oil groove is ground, and provides a processing method for attaching a nut block and the surface of a screw rod, wherein the nut block is difficult to damage and has high grinding efficiency when the internal threads of the nut block are ground.
The technical scheme adopted by the invention for solving the technical problems is as follows: a processing method for jointing a nut block and the surface of a screw rod,
s1, the grinding device comprises a screw rod and a cylindrical consolidation grinding wheel, wherein rough external threads are arranged on the screw rod and the consolidation grinding wheel, the outer diameter of the consolidation grinding wheel is larger than that of the screw rod, and the consolidation grinding wheel is fixedly arranged at one axial end of the screw rod and forms a component to be ground;
s2, mounting the component to be ground on a thread grinder, and grinding the screw surfaces of the screw rod and the consolidation grinding wheel by the thread grinder;
s3, detaching the consolidation grinding wheel from the screw rod, rotatably installing the consolidation grinding wheel on a nut sleeve grinding machine, attaching a plurality of nut blocks to be processed on the external thread of the consolidation grinding wheel, arranging nut block positioning sleeves outside the nut blocks attached to the consolidation grinding wheel, and elastically pressing the internal threads of the nut blocks to be closely attached to the external thread of the consolidation grinding wheel by the nut block positioning sleeves;
s4, the consolidation grinding wheel drives forward rotation or reverse rotation through the nut sleeve grinding machine, the nut sleeve grinding machine limits the nut block positioning sleeve and the nut blocks to move only along the axial direction of the consolidation grinding wheel, reciprocating motion of the nut blocks attached to the consolidation grinding wheel is achieved when the consolidation grinding wheel rotates forward and backward, the spiral surface of the consolidation grinding wheel grinds and trims the spiral surfaces of the nut blocks, and the spiral surface of the consolidation grinding wheel is attached to the spiral surfaces of the nut blocks.
The further preferred scheme of the invention is as follows: the grinding pitch diameter of a plurality of nut blocks of the consolidation grinding wheel is larger than the pitch diameter of the screw rod, the radius difference is calculated according to the clearance value A of the static pressure screw rod and the screw rod helicoid oblique angle alpha
The further preferred scheme of the invention is as follows: and in the S1, a penetrating insertion hole is formed in the center of the consolidation grinding wheel, an optical axis section is arranged at one end of the screw rod and is inserted into the insertion hole, and the optical axis section and the insertion hole are consistent in length and diameter.
The further preferred scheme of the invention is as follows: and one end of the optical axis section is provided with a threaded connection section, a fixing nut is arranged on the threaded connection section in a screwed connection mode, and the fixing nut is matched with the lead screw to limit and fixedly fix the grinding wheel.
The further preferred scheme of the invention is as follows: and in the S2, the consolidation grinding wheel is a common grinding wheel, and the thread grinder is provided with a superhard grinding material capable of processing the common grinding wheel and the screw rod.
The further preferred scheme of the invention is as follows: in the S3, an inner anti-rotation lug is arranged in the nut block positioning sleeve, the plurality of nut blocks are arranged in the nut block positioning sleeve, and gaps among the plurality of nut blocks are filled with the inner anti-rotation lug.
The further preferred scheme of the invention is as follows: and S3, an elastic piece is arranged in the nut block positioning sleeve and abuts against the outer ring of the nut block, and the nut block is tightly attached to the external thread of the consolidation grinding wheel.
The further preferred scheme of the invention is as follows: s3, a limiting groove is formed in the nut sleeve grinding machine, an outer anti-rotation lug is arranged on the radial surface of the nut block positioning sleeve, and when the nut sleeve grinding machine drives the consolidation grinding wheel to rotate, the outer anti-rotation lug is matched with the limiting groove to limit the nut block positioning sleeve and a plurality of nut blocks in the nut block positioning sleeve to only translate along the rotating axial direction.
The further preferred scheme of the invention is as follows: and S3, a rotating shaft is arranged on the nut sleeve grinding machine, the consolidation grinding wheel is sleeved on the rotating shaft in a penetrating manner through an insertion hole, the rotating shaft can drive the consolidation grinding wheel to rotate, and a positioning nut is arranged to enable the consolidation grinding wheel to be axially limited and mounted.
The further preferred scheme of the invention is as follows: the nut sleeve grinding machine is provided with a motor, and the motor drives the rotating shaft to rotate.
Compared with the prior art, the invention has the advantages that the consolidation grinding wheel and the screw thread on the screw rod which form the component to be ground are simultaneously processed by the thread grinder, the consolidation grinding wheel is detached from the screw rod and is installed on the thread sleeve grinder, and the internal threads of a plurality of nut blocks which are attached and installed on the consolidation grinding wheel are ground, so that the plurality of nut blocks after being ground can be attached to the screw rod, namely, the grinding precision can be ensured while the screw thread of the nut blocks is not damaged, and the processing efficiency is high.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are merely drawn for the purpose of illustrating the preferred embodiments and therefore should not be considered limiting of the scope of the invention, and that, unless otherwise indicated, the drawings are merely schematic representations of the compositions or constructions of the objects depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a component to be ground in a first step of a preferred embodiment of the present invention;
FIG. 2 is an exploded view of a component to be ground in step one of the preferred embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a nut-in-nut grinder with a consolidated grinding wheel and nut assembly installed in step two of the preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view of the bonded grinding wheel and nut assembly of step two of the preferred embodiment of the present invention;
FIG. 5 is an exploded view of a nut assembly in accordance with a preferred embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating parameters between the nut block and the lead screw according to the preferred embodiment of the present invention.
In the figure: 01. a component to be ground: 1. a fixed grinding wheel 11 and a jack; 2. a screw rod 21, a screw connection section 22 on the optical axis section; 3. fixing a nut; 02. nut cover grinding machine, 02a, spacing groove: 4. a rotating shaft; 5. a motor; 6. positioning a nut; 03. a nut component: 7. a nut block; 8. a nut block positioning sleeve 81, an outer anti-rotation lug 82 and an inner anti-rotation lug; 9. an elastic member.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and those skilled in the art will appreciate that the descriptions are illustrative only, exemplary and should not be construed as limiting the scope of the present invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
The embodiment mainly explains the processing method for the surface attachment of the nut block and the screw rod, which is not easy to damage and has high grinding efficiency during the grinding of the internal thread of the nut block, and specifically comprises the following steps:
as shown in fig. 1 to 5, the method for processing the surface of the nut block 7 and the lead screw 2 to be attached includes a thread grinder for grinding the existing rough external thread of the fixed grinding wheel 1 and the lead screw 2, and a nut sleeve grinder 02 for grinding the internal thread of the nut block 7.
The grinding processing of the consolidation grinding wheel 1, the screw rod 2 and the nut block 7 comprises the following specific steps:
the method comprises the following steps: as shown in fig. 1-2, locate the axial one end of lead screw 2 with consolidation emery wheel 1, be equipped with optical axis section 21 on the axial tip of lead screw 2, and consolidation emery wheel 1 center is equipped with the jack 11 that the axial runs through, consolidation emery wheel 1 wears to overlap on optical axis section 21 through jack 11, and the axial tip of optical axis section 21 is equipped with spiro union section 22, the screw thread section wears out consolidation emery wheel 1, it connects soon on spiro union section 22 to be equipped with 3 threads of fixation nut, the installation of 3 spacing consolidation emery wheels of fixation nut 1, consolidation emery wheel 1, the grinding subassembly 01 is treated in lead screw 2 and 3 constitutions of fixation nut.
Preferably, the outer diameter of the consolidation grinding wheel 1 is larger than that of the screw rod 2, and the length and the diameter of the optical axis section 21 are consistent with those of the insertion hole 11.
Step two: and (3) installing the component 01 to be ground on a thread grinder, and grinding the screw surface of the external thread rough-machined by the screw rod 2 and the consolidation grinding wheel by the thread grinder to ensure that the screw pitches of the external thread on the screw rod 2 and the consolidation grinding wheel are consistent.
In the step, the thread grinder is provided with the superhard abrasive material which can grind and process a common grinding wheel and the screw rod 2, preferably, the consolidation grinding wheel 1 is the common grinding wheel, and the screw rod 2 is made of steel material.
Step three: as shown in fig. 3-5, a consolidation grinding wheel 1 is detached from a screw rod 2 and is mounted on a nut sleeve grinding machine 02, a rotating shaft 4 is arranged on the nut sleeve grinding machine 02, the consolidation grinding wheel 1 is sleeved on the rotating shaft 4 in a penetrating manner through an insertion hole 11, a positioning nut 6 is arranged to fixedly mount the consolidation grinding wheel 1 on the rotating shaft 4, and the consolidation grinding wheel 1 can rotate along with the rotating shaft 4;
the internal threads of the plurality of nut blocks 7 are attached to the external threads of the fixed grinding wheel 1, a nut block positioning sleeve 8 is arranged on the periphery of the plurality of nut blocks 7 in a sleeved mode, a limiting groove 02a is formed in the nut sleeve grinding machine 02, and an external anti-rotation lug 81 inserted into the limiting groove 02a is arranged on the radial surface of the nut block positioning sleeve 8;
when the nut sleeve grinding machine 02 drives the consolidation grinding wheel 1 to rotate, the external anti-rotation lug 81 is matched with the limiting groove 02a to limit the nut block positioning sleeve 8 and the plurality of nut blocks 7 in the nut block positioning sleeve 8 to only translate along the axial direction of rotation through threaded matching.
Step four: the nut sleeve grinding machine 02 rotates forwards or backwards by driving the rotating shaft 4, the rotating shaft 4 is in band-pass with the consolidation grinding wheel 1 to rotate in the same direction, the plurality of nut blocks 7 attached to the external thread of the consolidation grinding wheel 1 are ground in a reciprocating mode along the rotating axial direction of the consolidation grinding wheel 1, the spiral surface of the consolidation grinding wheel 1 grinds and repairs the spiral surfaces of the plurality of nut blocks 7, the spiral surface of the consolidation grinding wheel 1 is attached to the spiral surfaces of the plurality of nut blocks 7, and namely the spiral surfaces of the plurality of nut blocks 7 ground by the spiral surface of the consolidation grinding wheel 1 can be closely attached to the spiral surface of the external thread of the screw rod 2.
Preferably, the grinding pitch diameter of the consolidation grinding wheel 1 to the plurality of nut blocks 7 is larger than the pitch diameter of the screw rod 2.
In the embodiment, the nut sleeve grinding machine 02 is provided with a motor 5 capable of driving a rotating shaft 4 to rotate, and the output end of the motor 5 is directly connected with the rotating shaft 4 in a sleeved mode; or the output end of the motor 5 and the rotating shaft 4 realize rotation transmission through structures such as gears or belt pulleys.
A plurality of nut pieces 7 and the nut piece position sleeve 8 of establishing at a plurality of nut pieces 7 at the cover constitute nut component 03, and the nut piece 7 internal thread in the nut component 03 is through concreteing emery wheel 1 after, and nut component 03 can laminate the installation completely through the internal thread of nut piece 7 and the external screw thread of lead screw 2.
In this embodiment, the nut piece 7 quantity of locating in nut piece position sleeve 8 is four, and be equipped with in the nut piece position sleeve 8 and prevent changeing the lug 82, prevent changeing the lug 82 in being used for filling the clearance between a plurality of nut pieces 7, make laminating between a plurality of nut pieces 7 inseparable, it is difficult not hard up, and when nut piece position sleeve 8 drove a plurality of nut pieces 7 and rotate, the relative nut piece position sleeve 8 of a plurality of nut pieces 7 can not take place to deflect, and be equipped with elastic component 9 in the nut piece position sleeve 8, elastic component 9 supports and ends in nut piece 7 outer lane, elastic component 9 provides elastic force and makes the internal thread of nut piece 7 and the external screw thread laminating of consolidation emery wheel 1 inseparable.
Preferably, the elastic member 9 comprises a spring or a V-shaped spring plate, etc.
As shown in fig. 6, the static pressure lead screw clearance value a is the clearance between the nut block 7 on the nut component 03 and the lead screw 2, the oblique angle of the spiral surface of the lead screw 2 is α, and the radius difference of the consolidated grinding wheel 1 is calculated to be
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
While the above detailed description of the method for fitting a nut block to a surface of a lead screw provided by the present invention has been presented, and the principle and the embodiment of the present invention have been described herein by using specific examples, the above description of the embodiments is only for the purpose of facilitating understanding of the present invention and the core idea, it should be noted that, for those skilled in the art, the present invention may be subjected to several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (10)
1. The processing method for jointing the nut block and the surface of the screw rod is characterized in that,
s1, the grinding device comprises a screw rod and a cylindrical consolidation grinding wheel, wherein rough external threads are arranged on the screw rod and the consolidation grinding wheel, the outer diameter of the consolidation grinding wheel is larger than that of the screw rod, and the consolidation grinding wheel is fixedly arranged at one axial end of the screw rod and forms a component to be ground;
s2, mounting the component to be ground on a thread grinder, and grinding the screw surfaces of the screw rod and the consolidation grinding wheel by the thread grinder;
s3, detaching the consolidation grinding wheel from the screw rod, rotatably installing the consolidation grinding wheel on a nut sleeve grinding machine, attaching a plurality of nut blocks to be processed on the external thread of the consolidation grinding wheel, arranging nut block positioning sleeves outside the nut blocks attached to the consolidation grinding wheel, and elastically pressing the internal threads of the nut blocks to be closely attached to the external thread of the consolidation grinding wheel by the nut block positioning sleeves;
s4, the consolidation grinding wheel drives forward rotation or reverse rotation through the nut sleeve grinding machine, the nut sleeve grinding machine limits the nut block positioning sleeve and the nut blocks to move only along the axial direction of the consolidation grinding wheel, reciprocating motion of the nut blocks attached to the consolidation grinding wheel is achieved when the consolidation grinding wheel rotates forward and backward, the spiral surface of the consolidation grinding wheel grinds and trims the spiral surfaces of the nut blocks, and the spiral surface of the consolidation grinding wheel is attached to the spiral surfaces of the nut blocks.
2. The method according to claim 1, wherein the grinding pitch diameter of the consolidation grinding wheel to the plurality of nut blocks is larger than the pitch diameter of the screw, and the radius difference is calculated according to the clearance value A of the hydrostatic screw and the helical surface bevel angle alpha of the screw
3. The method as claimed in claim 1, wherein the consolidated grinding wheel at S1 has a through hole at its center, and a smooth shaft section is provided at one end of the screw rod and inserted into the through hole, and the length and diameter of the smooth shaft section and the through hole are the same.
4. The processing method for attaching the nut block to the surface of the lead screw according to claim 2, wherein a threaded section is provided at one end of the optical axis section, a fixing nut is screwed on the threaded section, and the fixing nut is engaged with the lead screw to limit and fix the grinding wheel.
5. The method for processing the surface joint of the nut block and the lead screw according to claim 1, wherein the consolidation grinding wheel in the step S2 is a common grinding wheel, and the thread grinder is provided with a super-hard abrasive material capable of processing the common grinding wheel and the lead screw.
6. The processing method of claim 1, wherein an internal anti-rotation lug is disposed in the nut block positioning sleeve in S3, the plurality of nut blocks are disposed in the nut block positioning sleeve, and the internal anti-rotation lug fills gaps between the plurality of nut blocks.
7. The method as claimed in claim 1, wherein an elastic member is disposed in the nut block positioning sleeve in S3, the elastic member abuts against an outer ring of the nut block, and the nut block is tightly attached to the external thread of the fixed grinding wheel.
8. The processing method for attaching the nut block to the surface of the lead screw according to claim 1, wherein in step S3, the nut sleeve grinding machine is provided with a limiting groove, the radial surface of the nut block positioning sleeve is provided with an external anti-rotation lug, and when the nut sleeve grinding machine drives the consolidation grinding wheel to rotate, the external anti-rotation lug is matched with the limiting groove to limit the nut block positioning sleeve and the plurality of nut blocks in the nut block positioning sleeve to only translate along the rotating axial direction.
9. The processing method for attaching the nut block to the surface of the lead screw according to claim 1, wherein in S3, the nut sleeve grinding machine is provided with a rotating shaft, the consolidation grinding wheel is sleeved on the rotating shaft through an insertion hole, the rotating shaft can drive the consolidation grinding wheel to rotate, and a positioning nut is provided to axially limit the consolidation grinding wheel.
10. The method as claimed in claim 1, wherein the nut-driving grinding machine is provided with a motor, and the motor drives the rotating shaft to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210727417.2A CN114932270B (en) | 2022-06-24 | 2022-06-24 | Processing method for bonding nut block and screw rod surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210727417.2A CN114932270B (en) | 2022-06-24 | 2022-06-24 | Processing method for bonding nut block and screw rod surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114932270A true CN114932270A (en) | 2022-08-23 |
| CN114932270B CN114932270B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210727417.2A Active CN114932270B (en) | 2022-06-24 | 2022-06-24 | Processing method for bonding nut block and screw rod surface |
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| CN216789503U (en) * | 2022-01-21 | 2022-06-21 | 江苏省骆运水利工程管理处 | Water seepage prevention device for screw bolt thread of water inlet taper pipe jackscrew of water pump |
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| Publication number | Publication date |
|---|---|
| CN114932270B (en) | 2023-08-22 |
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Denomination of invention: Processing method for fitting nut blocks to the surface of screw rods Granted publication date: 20230822 Pledgee: Baiyang Sub Branch of Zhejiang Wuyi Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Yawei Precision Machine Tool Co.,Ltd. Registration number: Y2024980014185 |
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