CN105563049A - Processing process for small crescent block of inner meshing gear pump - Google Patents
Processing process for small crescent block of inner meshing gear pump Download PDFInfo
- Publication number
- CN105563049A CN105563049A CN201610158351.4A CN201610158351A CN105563049A CN 105563049 A CN105563049 A CN 105563049A CN 201610158351 A CN201610158351 A CN 201610158351A CN 105563049 A CN105563049 A CN 105563049A
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- Prior art keywords
- block teeth
- solar month
- face
- grinding
- days block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012545 processing Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001192 hot extrusion Methods 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910001651 emery Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 101100008049 Caenorhabditis elegans cut-5 gene Proteins 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a processing process for a small crescent block of an inner meshing gear pump. The processing process comprises the steps of: preparing a striped small crescent block profile by a hot extrusion process, cutting into a semicircular small crescent block, placing the semicircular small crescent block in an end surface grinding clamp, grinding one end surface of a plane grinding machine, reversely clamping a ground product, grinding the other end surface, then clamping the product with an excircle grinding clamp, roughly grinding an excircle and finely grinding. By arranging the end surface grinding clamp, the verticality between the end surfaces and the excircle of the small crescent block can be ensured, and the end surface processing efficiency is improved; and by adopting the hot extrusion process, the material compactness is better, the hardness is improved, the wear resistance is increased, and the production efficiency is improved by 5-10 times in comparison with that of line cutting.
Description
Technical field
The present invention relates to hydraulic pump manufacturing technology field, especially a kind of crescent gear pump solar month of 30 days block teeth processing technology.
Background technology
Solar month of 30 days block teeth are the parts that height force feed region separates in crescent gear pump, usually and the solar month block teeth match and use, material is generally tin bronze, its profile is a semicircle laminated structure, precision the having the greatest impact to whole pump of its periphery and end face, conventional method uses linear cutter, but linear cutter speed is slow, element precision after machining is low, surface roughness is poor, constrain the development of crescent gear pump to a certain extent, so manufacture solar month of 30 days block teeth in the urgent need to a kind of brand-new technique.
Summary of the invention
The object of the invention is to solve in existing crescent gear pump solar month of 30 days block teeth process, linear cutter speed is slow, the problem that the element precision after machining is low, surface roughness is poor.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of crescent gear pump solar month of 30 days block teeth processing technology, is characterized in that having following steps:
(1) adopt hot extrusion technique to make the solar month of 30 days block teeth section bar of strip: first according to solar month of 30 days block teeth Section Design, produce mould, utilize round casting rod extrusion molding from grinding tool that extruder will heat; (2) the solar month of 30 days block teeth section bar of strip is cut into semicircle sheet solar month of 30 days block teeth by certain length; (3) semicircle sheet solar month of 30 days block teeth are put into face grinding fixture on surface grinding machine, grind an end face, by product clamping conversely after milled, mill another one end face; (4) product is put in the fixture of cylindrical grinding face and roughly grinds cylindrical after clamping, then refine, after having ground, product is removed from fixture, machine.
Described face grinding fixture is made up of one piece of rectangular steel part, the surface of steel part is provided with 12 half slots consistent with solar month of 30 days block teeth cross section, be provided with bolt hole in the side of half slot, in bolt hole, puller bolt be housed, puller bolt is used for the side of product and half slot to fix.
Described cylindrical grinding face fixture comprises chuck body and device for exerting, described chuck body comprises mandrel, the first end face disc, movable holddown, the second end face disc, hold-down bolt, described mandrel is cylindric, mid portion diameter is larger, two ends support section diameter is less, mid portion is evenly arranged 3 solar month of 30 days block teeth mounting grooves, and the end of two ends support section is provided with center hole, and mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth; The first described end face disc is fixedly mounted on the left side of mandrel mid portion; The second described end face disc is fixedly mounted on the right side of mandrel mid portion by screw; Described movable holddown has 3, and is evenly arranged in the mounting groove of the second end face disc, and movable holddown is hingedly mounted on the second installing hole of the second end face disc by bottom first installing hole, and installs bearing pin in two installing holes; Described hold-down bolt is arranged in the screwed hole of the second end face disc at movable holddown rear portion, and hold-down bolt is used for promoting movable holddown and compresses solar month of 30 days block teeth;
Described device for exerting comprises screw shell, nut, travelling carriage, extension sleeve, Compress Spring, expansion link, swing span, articulated stand, rolling wheel support, roller, and described screw shell is slidably mounted on the mandrel on the left of chuck body; Described travelling carriage is slidably mounted on screw shell, and the outside of travelling carriage is provided with 3 body cradles; Described nut is arranged on the left of travelling carriage, and coordinates with the threaded portion of screw shell and install; Described extension sleeve is hinged on the body cradle outside travelling carriage; Described expansion link one end is hingedly mounted on the left end of swing span, and the other end and extension sleeve are slidably installed, between extension sleeve and expansion link, be provided with Compress Spring; Described articulated stand has 3, and is evenly distributed on outside screw shell flange; The position that keeps left, the middle part of described swing span is hingedly mounted on the end of articulated stand; Described rolling wheel support bottom is symmetrical is provided with 2 rollers, and the middle part of rolling wheel support is hingedly mounted on the low order end of swing span; Device for exerting promotes travelling carriage by adjusting nut and moves axially, and then drive swing span by extension sleeve, Compress Spring, expansion link, swing span drives rolling wheel support to pass through 2 pair of rollers solar month of 30 days block teeth surfaces again and produces certain pressure, the size of pressure is regulated by nut, the effect of device for exerting is that the inner headed face of solar month of 30 days block teeth was fitted with the solar month of 30 days block teeth mounting groove intimate surface on mandrel before being clamped by movable holddown, eliminate gap, need device for exerting to pull down after 3 solar month of 30 days block teeth have all been clamped by movable holddown.
As preferably, the described monolateral stock removal of solar month of 30 days block teeth end face is 0.1 ~ 0.15mm, the cylindrical corase grind amount 0.08 ~ 0.1mm of solar month of 30 days block teeth, fine grinding amount 0.03 ~ 0.05mm.
As preferably, the cylindrical corase grind employing 150 order vitrified bonding emery wheel of described solar month of 30 days block teeth, corase grind speed is 7 ~ 13 μm/s, and fine grinding employing 300 order vitrified bonding emery wheel, fine grinding speed is 3 ~ 5 μm/s.
The invention has the beneficial effects as follows:
1., by arranging face grinding fixture, the perpendicularity of end face and solar month of 30 days block teeth cylindrical can be ensured, and improve end face working (machining) efficiency.
2., by adopting hot extrusion technique, make the compactness of material better, hardness also promotes to some extent, adds wearability, and production efficiency is higher than Linear cut 5 ~ 10 times.
3. the present invention adopts the periphery of cylindrical grinding face fixture mill solar month of 30 days block teeth, improves solar month of 30 days block teeth outer surface circularity, cylindricity and surface roughness, improves yields.
Accompanying drawing explanation
Fig. 1 is entirety assembling perspective view of the present invention.
Fig. 2 is chuck body of the present invention and device for exerting isolating construction schematic diagram.
Fig. 3 is chuck body deployed configuration schematic diagram of the present invention.
Fig. 4 is face grinding clamp workpiece clamping schematic diagram of the present invention.
Fig. 5 is core shaft structure schematic diagram of the present invention.
Fig. 6 is screw shell of the present invention and articulated stand scheme of installation.
Fig. 7 is solar month of 30 days block teeth schematic diagram of the present invention.
Drawing reference numeral: 1-mandrel; 2-screw shell; 3-nut; 4-travelling carriage; 5-extension sleeve; 6-Compress Spring; 7-expansion link; 8-swing span; 9-articulated stand; 10-first end face disc; 11-rolling wheel support; 12-roller; 13-solar month of 30 days block teeth; 14-movable holddown; 15-second end face disc; 16-hold-down bolt; 1401-first installing hole; 1501-second installing hole.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment one
A kind of crescent gear pump solar month of 30 days block teeth processing technology is that the solar month of 30 days block teeth of 80mm, internal diameter 70mm, width 50mm are example with external diameter, makes according to the following steps:
One, adopt hot extrusion technique to make the solar month of 30 days block teeth section bar of strip: first according to solar month of 30 days block teeth Section Design, produce mould, utilize round casting rod extrusion molding from grinding tool that extruder will heat;
Two, the solar month of 30 days block teeth section bar of strip is cut into semicircle sheet solar month of 30 days block teeth by certain length;
Three, semicircle sheet solar month of 30 days block teeth 13 are put into face grinding fixture on surface grinding machine, grind an end face, by product clamping conversely after milled, mill another one end face;
Four, product is put in the fixture of cylindrical grinding face and roughly grinds cylindrical after clamping, then refine, after having ground, product is removed from fixture, machine.
Described face grinding fixture is made up of one piece of rectangular steel part, and the surface of steel part is provided with 12 half slots consistent with solar month of 30 days block teeth cross section, is provided with bolt hole, in bolt hole, puller bolt is housed in the side of half slot.
Described cylindrical grinding face fixture comprises chuck body and device for exerting, described chuck body comprises mandrel 1, first end face disc 10, movable holddown 14, second end face disc 15, hold-down bolt 16, described mandrel 1 is cylindric, mid portion diameter is larger, two ends support section diameter is less, mid portion is evenly arranged 3 solar month of 30 days block teeth mounting grooves, and the end of two ends support section is provided with center hole, and mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth; The first described end face disc 10 is fixedly mounted on the left side of mandrel 1 mid portion; The second described end face disc 15 is fixedly mounted on the right side of mandrel 1 mid portion by screw; Described movable holddown 14 has 3, and be evenly arranged in the mounting groove of the second end face disc 15, movable holddown 14 is hingedly mounted on the second installing hole 1501 of the second end face disc 15 by bottom first installing hole 1401, and installs bearing pin in two installing holes; Described hold-down bolt 16 is arranged in the screwed hole of the second end face disc 15 at movable holddown 14 rear portion;
Described device for exerting comprises screw shell 2, nut 3, travelling carriage 4, extension sleeve 5, Compress Spring 6, expansion link 7, swing span 8, articulated stand 9, rolling wheel support 11, roller 12, and described screw shell 2 is slidably mounted on the mandrel 1 on the left of chuck body; Described travelling carriage 4 is slidably mounted on screw shell 2, and the outside of travelling carriage 4 is provided with 3 body cradles; Described nut 3 is arranged on the left of travelling carriage 4, and coordinates with the threaded portion of screw shell 2 and install; Described extension sleeve 5 is hinged on the body cradle outside travelling carriage 4; Described expansion link 7 one end is hingedly mounted on the left end of swing span 8, and the other end and extension sleeve 5 are slidably installed, and are provided with Compress Spring 6 between extension sleeve 5 and expansion link 7; Described articulated stand 9 has 3, and is evenly distributed on outside screw shell 2 flange; The position that keeps left, the middle part of described swing span 8 is hingedly mounted on the end of articulated stand 9; Described rolling wheel support 11 bottom is symmetrical is provided with 2 rollers 12, and the middle part of rolling wheel support 11 is hingedly mounted on the low order end of swing span 8.
As preferably, the described monolateral stock removal of solar month of 30 days block teeth 13 end face is 0.1mm, the cylindrical corase grind amount 0.08mm of solar month of 30 days block teeth 13, fine grinding amount 0.03mm.
As preferably, the cylindrical corase grind employing 150 order vitrified bonding emery wheel of described solar month of 30 days block teeth 13, corase grind speed is 7 μm/s, and fine grinding employing 300 order vitrified bonding emery wheel, fine grinding speed is 3 μm/s.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the structure after simple transformation of the present invention, method.
Operation principle of the present invention: the present invention is in use first by face grinding fixture mill moon block teeth two end faces, solar month of 30 days block teeth 13 mounting groove of plug mid portion is put into after having ground, then device for exerting is inserted on the left of mandrel 1, device for exerting promotes travelling carriage 4 by adjusting nut 3 and moves axially, and then by extension sleeve 5, Compress Spring 6, expansion link 7 drives swing span 8, swing span 8 drives rolling wheel support 11 to produce certain pressure by 2 rollers, 12 pairs of solar month of 30 days block teeth 13 surfaces again, the size of pressure is regulated by nut 3, the effect of device for exerting is that the inner headed face of solar month of 30 days block teeth 13 was fitted with the solar month of 30 days block teeth 13 mounting groove intimate surface on mandrel 1 before being clamped by movable holddown 14, eliminate gap, need device for exerting to pull down after 3 solar month of 30 days block teeth 13 have all been clamped by movable holddown 14, then chuck body is contained in the cylindrical of two little crescent moons of top upper mill of cylindrical grinder, after having ground, solar month of 30 days block teeth 13 are taken off, machine.
Claims (5)
1. a crescent gear pump solar month of 30 days block teeth processing technology, is characterized in that having following steps:
(1) adopt hot extrusion technique to make the solar month of 30 days block teeth section bar of strip: first according to solar month of 30 days block teeth Section Design, produce mould, utilize round casting rod extrusion molding from grinding tool that extruder will heat;
(2) the solar month of 30 days block teeth section bar of strip is cut into semicircle sheet solar month of 30 days block teeth (13) by certain length;
(3) semicircle sheet solar month of 30 days block teeth (13) are put into face grinding fixture on surface grinding machine, grind an end face, by product clamping conversely after milled, mill another one end face;
(4) product is put in the fixture of cylindrical grinding face and roughly grinds cylindrical after clamping, then refine, after having ground, product is removed from fixture, machine.
2. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterized in that: described face grinding fixture is made up of one piece of rectangular steel part, the surface of steel part is provided with 12 half slots consistent with solar month of 30 days block teeth cross section, be provided with bolt hole in the side of half slot, in bolt hole, puller bolt be housed.
3. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterized in that: described cylindrical grinding face fixture comprises chuck body and device for exerting, described chuck body comprises mandrel (1), first end face disc (10), movable holddown (14), second end face disc (15), hold-down bolt (16), described mandrel (1) is for cylindric, mid portion diameter is larger, two ends support section diameter is less, mid portion is evenly arranged 3 solar month of 30 days block teeth mounting grooves, the end of two ends support section is provided with center hole, mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth, described the first end face disc (10) is fixedly mounted on the left side of mandrel (1) mid portion, described the second end face disc (15) is fixedly mounted on the right side of mandrel (1) mid portion by screw, described movable holddown (14) has 3, and be evenly arranged in the mounting groove of the second end face disc (15), movable holddown (14) is hingedly mounted on second installing hole (1501) of the second end face disc (15) by bottom first installing hole (1401), and installs bearing pin in two installing holes, described hold-down bolt (16) is arranged in the screwed hole of the second end face disc (15) at movable holddown (14) rear portion,
Described device for exerting comprises screw shell (2), nut (3), travelling carriage (4), extension sleeve (5), Compress Spring (6), expansion link (7), swing span (8), articulated stand (9), rolling wheel support (11), roller (12), and described screw shell (2) is slidably mounted on the mandrel (1) on the left of chuck body; Described travelling carriage (4) is slidably mounted on screw shell (2), and the outside of travelling carriage (4) is provided with 3 body cradles; Described nut (3) is arranged on travelling carriage (4) left side, and coordinates with the threaded portion of screw shell (2) and install; Described extension sleeve (5) is hinged on the body cradle in travelling carriage (4) outside; Described expansion link (7) one end is hingedly mounted on the left end of swing span (8), and the other end and extension sleeve (5) are slidably installed, and are provided with Compress Spring (6) between extension sleeve (5) and expansion link (7); Described articulated stand (9) has 3, and is evenly distributed on outside screw shell (2) flange; The position that keeps left, the middle part of described swing span (8) is hingedly mounted on the end of articulated stand (9); Described rolling wheel support (11) bottom is symmetrical is provided with 2 rollers (12), and the middle part of rolling wheel support (11) is hingedly mounted on the low order end of swing span (8).
4. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterized in that: the described monolateral stock removal of solar month of 30 days block teeth (13) end face is 0.1 ~ 0.15mm, the cylindrical corase grind amount 0.08 ~ 0.1mm of solar month of 30 days block teeth (13), fine grinding amount 0.03 ~ 0.05mm.
5. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterized in that: the cylindrical corase grind employing 150 order vitrified bonding emery wheel of described solar month of 30 days block teeth (13), corase grind speed is 7 ~ 13 μm/s, fine grinding employing 300 order vitrified bonding emery wheel, fine grinding speed is 3 ~ 5 μm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158351.4A CN105563049B (en) | 2016-03-21 | 2016-03-21 | A kind of crescent gear pump solar month of 30 days block teeth processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158351.4A CN105563049B (en) | 2016-03-21 | 2016-03-21 | A kind of crescent gear pump solar month of 30 days block teeth processing technology |
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| Publication Number | Publication Date |
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| CN105563049A true CN105563049A (en) | 2016-05-11 |
| CN105563049B CN105563049B (en) | 2017-09-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862475A (en) * | 2017-02-23 | 2017-06-20 | 江苏天毅冷镦股份有限公司 | The cold upsetting production technique of interior hexagonal studs blank |
| CN107672115A (en) * | 2017-09-11 | 2018-02-09 | 东莞市热恒注塑科技有限公司 | A kind of device for being used to install oval hot nozzle heating wire |
| CN108453479A (en) * | 2018-07-10 | 2018-08-28 | 唐万刚 | A kind of processing technology of the auxiliary pump housing |
| CN111250936A (en) * | 2020-03-12 | 2020-06-09 | 上海瑙克科技发展有限公司 | Gear pump for bending machine and manufacturing method thereof |
| CN113752162A (en) * | 2021-09-29 | 2021-12-07 | 中国第一汽车股份有限公司 | Centre surrounding clamping type driving clamp |
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| DE19615849A1 (en) * | 1996-04-20 | 1997-10-23 | Eckerle Rexroth Gmbh Co Kg | Hydraulic machine with meshing internal and external teeth |
| GB2299134B (en) * | 1995-03-23 | 1998-06-24 | Sauer Sundstrand Ltd | Internal gear pump |
| CN101885050A (en) * | 2010-07-16 | 2010-11-17 | 吴江市液铸液压件铸造有限公司 | Process of casting gear pump rear cover |
| CN102619746A (en) * | 2012-02-29 | 2012-08-01 | 盐城市驰英机械科技有限公司 | Internal gear pump |
| CN103695701A (en) * | 2013-12-17 | 2014-04-02 | 宁波华液机器制造有限公司 | Crescent block assembly of gear-within-gear pump and preparation method thereof |
| CN104233008A (en) * | 2014-09-24 | 2014-12-24 | 中色（天津）特种材料有限公司 | Preparation method of gear pump lateral plate |
-
2016
- 2016-03-21 CN CN201610158351.4A patent/CN105563049B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299134B (en) * | 1995-03-23 | 1998-06-24 | Sauer Sundstrand Ltd | Internal gear pump |
| DE19615849A1 (en) * | 1996-04-20 | 1997-10-23 | Eckerle Rexroth Gmbh Co Kg | Hydraulic machine with meshing internal and external teeth |
| CN101885050A (en) * | 2010-07-16 | 2010-11-17 | 吴江市液铸液压件铸造有限公司 | Process of casting gear pump rear cover |
| CN102619746A (en) * | 2012-02-29 | 2012-08-01 | 盐城市驰英机械科技有限公司 | Internal gear pump |
| CN103695701A (en) * | 2013-12-17 | 2014-04-02 | 宁波华液机器制造有限公司 | Crescent block assembly of gear-within-gear pump and preparation method thereof |
| CN104233008A (en) * | 2014-09-24 | 2014-12-24 | 中色（天津）特种材料有限公司 | Preparation method of gear pump lateral plate |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862475A (en) * | 2017-02-23 | 2017-06-20 | 江苏天毅冷镦股份有限公司 | The cold upsetting production technique of interior hexagonal studs blank |
| CN106862475B (en) * | 2017-02-23 | 2018-12-25 | 江苏天毅冷镦股份有限公司 | The cold upsetting production technique of interior hexagonal studs blank |
| CN107672115A (en) * | 2017-09-11 | 2018-02-09 | 东莞市热恒注塑科技有限公司 | A kind of device for being used to install oval hot nozzle heating wire |
| CN108453479A (en) * | 2018-07-10 | 2018-08-28 | 唐万刚 | A kind of processing technology of the auxiliary pump housing |
| CN108453479B (en) * | 2018-07-10 | 2019-08-20 | 山东禧龙石油装备有限公司 | A kind of processing technology assisting the pump housing |
| CN111250936A (en) * | 2020-03-12 | 2020-06-09 | 上海瑙克科技发展有限公司 | Gear pump for bending machine and manufacturing method thereof |
| CN113752162A (en) * | 2021-09-29 | 2021-12-07 | 中国第一汽车股份有限公司 | Centre surrounding clamping type driving clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105563049B (en) | 2017-09-19 |
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Effective date of registration: 20170817 Address after: 602, room 1, unit 3, Huaxia District, Jiaojiang District, Zhejiang, Taizhou, 318000 Applicant after: Li Yinxiao Address before: 426100 Yongzhou City, Hunan province Qiyang County Zitang stone town of Xichong village seven Group No. 126 Applicant before: Yang Ding |
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Effective date of registration: 20181116 Address after: Room 103-16, Building 5, 656 Qixing Road, Wuxing District, Huzhou City, Zhejiang Province, 313028 Patentee after: Huzhou Peiyou Incubator Co., Ltd. Address before: Room 602, Unit 1, Building 3, Huaxia District, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: Li Yinxiao |
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Effective date of registration: 20190513 Address after: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee after: Huaian Foster Hydraulic Technology Co., Ltd. Address before: Room 103-16, Building 5, 656 Qixing Road, Wuxing District, Huzhou City, Zhejiang Province, 313028 Patentee before: Huzhou Peiyou Incubator Co., Ltd. |
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Address after: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee after: Huaian Foster Hydraulic Technology Co., Ltd. Address before: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee before: Huaian Foster Hydraulic Technology Co., Ltd. |