CN202114500U - Pull rod positioning clamp - Google Patents
Pull rod positioning clamp Download PDFInfo
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- CN202114500U CN202114500U CN2011201795370U CN201120179537U CN202114500U CN 202114500 U CN202114500 U CN 202114500U CN 2011201795370 U CN2011201795370 U CN 2011201795370U CN 201120179537 U CN201120179537 U CN 201120179537U CN 202114500 U CN202114500 U CN 202114500U
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Abstract
A pull rod positioning clamp belongs to the technical field of clamps, and comprises a base, a first bottom plate, a second bottom plate, two left clamping mechanisms with same structures and a right clamping mechanism. The first bottom plate and the second bottom plate are mounted on the left and the right of the upper surface of the base, the two left clamping mechanisms are mounted in the front and the rear of the first bottom plate respectively, and the right clamping mechanism is mounted on the second bottom plate. A cylindrical pipe of a workpiece is tightly pressed by the left clamping mechanisms, and horizontal torsion of the cylindrical pipe is controlled by the left clamping mechanisms. The right clamping mechanism is used for tightly pressing another cylindrical pipe of the workpiece and controlling vertical torsion of the workpiece. Since a supporting block of the right clamping mechanism is capable of rotating relative to a supporting plate, torsion of the workpiece in other directions can be controlled. The left clamping mechanisms are combined with the right clamping mechanism, and the clamp moves instead of the workpiece when the workpiece is fixed onto the clamp, so that stepped holes of the machined cylindrical pipe are high in precision, geometric tolerance can be guaranteed, the rate of finished products is high, and cost is reduced.
Description
Technical field
The utility model relates to a kind of anchor clamps, relates to a kind of positioning and clamping tool of processing pull rod specifically.
Background technology
As depicted in figs. 1 and 2; Structural representation for U.S. Kang Lige company oil drilling platform workpiece-pull bar; Its cylindrical tube 2 ' by L shaped connecting lever of panel beating material 1 ' and connecting lever 1 ' right ends is welded, and two cylindrical tube 2 ' are respectively perpendicular to the left and right two ends of connecting lever 1 '.The inner chamber two ends of two cylindrical tube 2 ' of this workpiece also need process a stepped hole 21 ' respectively, and the accurate to dimension requirement of stepped hole 21 ' is: stepped hole
form and position tolerance: both sides stepped hole axiality 0.025mm; Two depth of parallelism 0.8mm.
Former processing technology adopts the boring and milling center, comes the two ends of processing column pipe 2 ' respectively through work table rotation 180 degree, and is as shown in Figure 3; Structural representation for former frock clamp; Comprise the upper surface that clamp mechanism 3 ' that base 6 ', four structures are identical and 4 ', two base plates 4 ' of two base plates are fixedly installed in base 6 ', per two clamp mechanism 3 ' and a base plate 4 ' are formed one group; A cylindrical tube that is used for fixing the pull bar workpiece; Distributing before and after two clamp mechanism 3 ' of every group are is installed on the upper surface of base plate 4 ', and each clamp mechanism 3 ' comprises back-up block 31 ', pressing plate 32 ' and two screw rods 33 ', and back-up block 31 ' is fixed in the upper surface of base plate 4 '; The upper surface middle part of back-up block 31 ' is to having a V-arrangement open slot 311 '; Pressing plate 32 ' be positioned at back-up block 31 ' above, pressing plate 32 ' links together through two screw rods 33 ' and back-up block 31 ', correspondingly in the middle part of the lower surface of the pressing plate 32 ' corresponding with the V-arrangement open slot of back-up block 31 ' 311 ' is provided with a V-arrangement open slot 321 '; V-arrangement open slot 311 walls of back-up block 31 ' ' and the V-arrangement open slot 321 ' wall of pressing plate 32 ' on be bolted with two wear-resistant blocks 5 ' respectively; During use, two cylindrical tube of pull bar workpiece are installed on two clamp mechanism 3 ' of every group respectively, and to go up clamping good, can the two ends of two cylindrical tube of pull bar workpiece be processed.Because this pull bar workpiece is behind welding forming, the cylindrical tube at two ends part can produce inevitable torsional deformation, and direction of twist is unfixing; And existing workpiece adds man-hour, and the cylindrical tube of workpiece supports through fixing dead back-up block 31 ', directly cylindrical tube is fixed through pressing plate 32 ' again; Wear-resistant block 5 ' on back-up block 31 ' and the pressing plate 32 ' together compresses the cylinder tube wall at this moment, follows the stepped hole at processing column pipe two ends, and the workpiece cylindrical tube has elastic deformation in clamping process; Therefore working as workpiece is to process by circular hole adding man-hour; And after the workpiece cylindrical tube is machining release, recover original form, and ellipse also might appear in φ 112.71 these apertures, and form and position tolerance is difficult to guarantee; Even if when torsional deformation is very little, can guarantee machining accuracy; But yield rate is too low, and processing cost is high, so the not processing of suitable this workpiece of this clamping technology.
The utility model content
The purpose of the utility model provides a kind of pull bar positioning and clamping tool, and the cylindrical tube stepped hole precision of its processing is high, morpheme worker's difference can guarantee, yield rate is high, cost reduces.
In order to realize such scheme, the technical solution of the utility model is: a kind of pull bar positioning and clamping tool comprises base, first and second base plate, two left clamp mechanism and right clamp mechanism that structure is identical; Said first and second base plate is installed on the left and right sides of base upper surface, and distributing before and after two said left clamp mechanism are is installed on first base plate, and said right clamp mechanism is installed on second base plate; Said left clamp mechanism comprises first back-up block, first pressing plate and two first screw rods, said first pressing plate be positioned at first back-up block above, said first back-up block is installed on first base plate; The lower surface of the upper surface of said first back-up block and first pressing plate is respectively equipped with first and second V-shaped groove; Said first and second V-shaped groove is corresponding up and down, is connected with two wear-resistant blocks on the wall of said first and second V-shaped groove respectively, and the lower end of wherein said first back-up block is provided with slide block; Be positioned on first corresponding below the said slide block base plate and be processed with a horizontal elongated slot; Said slide block is installed in the horizontal elongated slot, and portion is arranged with two first mounting holes about said first pressing plate, and two said first screw rods are spirally connected fixing with first base plate after passing first mounting hole on two first pressing plates respectively; Be positioned at first nut that is spirally connected respectively on two said first screw rods of said first pressing plate top; Said horizontal elongated slot is between two said first screw rods, and said right clamp mechanism comprises two pawl pressing plates, hinge support plate mechanism, second screw rod, chute and two second back-up blocks, and said hinge support panel assembly comprises two fixed blocks and a gripper shoe; About being, two said fixed blocks are distributed in the upper surface middle part of second pressing plate; Connect bearing pin between two said fixed blocks, the middle part of said gripper shoe is hinged on the bearing pin, and the front and rear part of said gripper shoe is arranged with two through holes; The lower end of two said second back-up blocks is respectively equipped with a cylindrical piece; Two said cylindrical pieces are installed on respectively in two through holes of gripper shoe, and said pair of pawl pressing plate is installed on the top of two said second back-up blocks, and the upper surface of two said second back-up blocks is respectively equipped with the 3rd V-shaped groove; Be separately installed with two wear-resistant blocks on two said the 3rd V-shaped grooves; The said pair of Y shape plate that the pawl pressing plate is made up of two the 3rd parallel pressing plates and a connecting rod, the lower surface of two said the 3rd pressing plates is corresponding with the upper surface position of two second back-up blocks respectively, and the lower end of two said the 3rd pressing plates is respectively equipped with briquetting; The lower surface of two said briquettings is arc surface; The middle part of said connecting rod is provided with second mounting hole, and said second screw rod passes behind second mounting hole of connecting rod and to be spirally connected fixingly with second base plate, is positioned on second screw rod above the said connecting rod second nut is installed; The upper surface right side of said second base plate vertically is provided with chute, and the right-hand member of said connecting rod vertically is against the chute internal chamber wall.
The utility model pull bar positioning and clamping tool; The upper surface homonymy of wherein said first and second base plate is provided with first and second positioning cylinder respectively; Said first positioning cylinder is installed between two first pressing plates of first base plate and near the right side of one of them first pressing plate, and said second positioning cylinder is installed between two second back-up blocks of second base plate and near the left side of one of them second back-up block.
The utility model pull bar positioning and clamping tool, the cross section of wherein said chute is the U type.
After adopting such scheme, the utility model pull bar positioning and clamping tool is controlled the distortion of workpiece cylindrical tube at horizontal left and right directions simultaneously through the cylindrical tube of left clamp mechanism assurance workpiece pressing; Guarantee to compress another cylindrical tube of workpiece through right clamp mechanism; Control the distortion of workpiece above-below direction simultaneously since between the back-up block of right clamp mechanism and the gripper shoe for being articulated and connected, so back-up block can rotate with respect to gripper shoe; So just can control the distortion of workpiece on other direction; Through the combination of left and right clamp mechanism, when workpiece was fixed on the anchor clamps, moving was the shape of clamp member rather than workpiece; When workpiece is clamped, just can not change the original form of workpiece like this, the cylindrical tube stepped hole precision that processes like this is high, form and position tolerance can guarantee, yield rate height and cost reduce.
Description of drawings
Fig. 1 is the main TV structure sketch map of workpiece pull bar;
Fig. 2 is the plan structure sketch map of workpiece pull bar;
Fig. 3 is the structural representation of existing pull bar positioning and clamping tool;
Fig. 4 is the main TV structure sketch map of the utility model pull bar positioning and clamping tool;
Fig. 5 is left TV structure (the not containing right clamp mechanism) sketch map of the utility model pull bar positioning and clamping tool;
Fig. 6 is right TV structure (the not containing left clamp mechanism) sketch map of the utility model pull bar positioning and clamping tool;
Fig. 7 is the plan structure sketch map of the utility model pull bar positioning and clamping tool.
The specific embodiment
Extremely shown in Figure 7 like Fig. 4; The utility model pull bar positioning and clamping tool comprise base 1, first base plate 2, second base plate 3, two left clamp mechanism 4 that structure is identical and right clamp mechanism 5, the first base plate 2 and second base plate 3 through bolt in the left and right sides of base 1 upper surface.Distributing before and after two left clamp mechanism 4 are is installed on first base plate 2, and right clamp mechanism 5 is installed on second base plate 3.
In conjunction with shown in Figure 5, left clamp mechanism 4 comprise first back-up block 41, first pressing plate 42 and two first screw rod 43, the first pressing plates 42 be positioned at first back-up block 41 above; First back-up block 41 is installed on first base plate 2; It is corresponding up and down that the lower surface that the upper surface of first back-up block 41 is processed with first V-shaped groove, 411, the first pressing plates 42 is processed with the position of second V-shaped groove, 421, the first V-shaped grooves 411 and second V-shaped groove 421; Be connected with two wear-resistant blocks 412 through bolt on the wall of first V-shaped groove 411; The lower end that is connected with two wear-resistant block 422, the first back-up blocks 41 through bolt on the wall of second V-shaped groove 421 is connected with slide block 413, is positioned on first corresponding below the slide block 413 base plates 2 to be processed with a horizontal elongated slot 21; Slide block 413 is installed in the horizontal elongated slot 21; One is arranged with two first mounting holes 423 back that 423, two first screw rods 43 of two first mounting holes pass first pressing plate 42 respectively and first base plate 2 and is spirally connected fixingly about first pressing plate 42, is positioned at first nut 44 that is spirally connected respectively on two first screw rods 43 of first pressing plate, 42 tops; Limit first pressing plate 42 through first nut 44 and move up, horizontal elongated slot 21 is between two first screw rods 43.
In conjunction with shown in Figure 6; Right clamp mechanism 5 comprises two pawl pressing plates 51, hinge support plate mechanism 52, second screw rod 53, chute 54 and two second back-up blocks 55; Hinge support panel assembly 52 comprises distributing about two fixed blocks 521 and 522, two fixed blocks 521 of a gripper shoe are and is fixed in the upper surface middle part of second pressing plate 3, connects bearing pin between two fixed blocks 521; The middle part of gripper shoe 522 is articulated on the bearing pin; The front and rear part of gripper shoe 522 is symmetrily processed with two through holes, and the lower end of two second back-up blocks 55 processes respectively in two through holes that 551, two cylindrical pieces 551 of a cylindrical piece are installed on gripper shoe 522 respectively; Two pawl pressing plates 51 are installed on the top of two second back-up blocks 55; The upper surface of two second back-up blocks 55 is processed with the 3rd V-shaped groove 552 respectively, on two the 3rd V-shaped grooves 552, is connected with two wear-resistant blocks 5521 through bolt respectively, and two pawl pressing plates 51 are by two the 3rd parallel pressing plates 511 and the Y shape plate that connecting rod 512 constitutes; The lower surface of two the 3rd pressing plates 511 is corresponding with the upper surface position of two second back-up blocks 55 respectively; The lower surface that the lower end of two the 3rd pressing plates 511 processes 5111, two briquettings 5111 of a briquetting respectively is processed with the arc surface of fitting with workpiece cylindrical tube surface respectively, and the middle part of connecting rod 512 is processed with second mounting hole 5121; Second mounting hole, 5121 backs that connecting rod 512 is passed in second screw rod, 53 lower ends are spirally connected fixing with second base plate 3; Be positioned at the upper surface right side vertical welding that second nut, 56, the second base plates 3 are installed on second screw rod 53 above the connecting rod 512 and be connected to the chute 54 that a cross section is the U type, the right-hand member of connecting rod 512 vertically is against on the internal chamber wall of chute 54.
The front side of first base plate 2 and second base plate, 3 upper surfaces vertical welding respectively is connected to first positioning cylinder 6 and second positioning cylinder 7; First positioning cylinder 6 is installed between two first pressing plates 42 of first base plate 2 and near the right side of front side first pressing plate 42, and second positioning cylinder 7 is installed between two second back-up blocks 55 of second base plate 3 and near the left side of front side second back-up block 55.It is to go forward with right clamp mechanism 5 in order to make the pull bar workpiece be installed on left clamp mechanism 4 that first positioning cylinder 6 and second positioning cylinder 7 are installed; Guarantee that the front surface of pull bar workpiece is against the back surface of the first positioning cylinder surface, 6 back and second positioning cylinder 7; Having limited workpiece like this can not move forward; This moment, the pull bar workpiece was vertical with right clamp mechanism 5 with left clamp mechanism 4 respectively, then two cylindrical tube on the pull bar workpiece was installed on respectively on left clamp mechanism 4 and the right clamp mechanism 5, and pull bar is fixed on this device; And process different pull bar workpiece all is to use the method at every turn, does not need centering when the pull bar workpiece is installed.
During the processing work pull bar; The cylindrical tube of pull bar workpiece one end is installed between first back-up block 41 and first pressing plate 42 of two left clamp mechanism 4; The cylindrical tube of the pull bar workpiece other end is installed between the two pawl pressing plates 51 and two second back-up blocks 55 of right clamp mechanism 5; Be slidingly connected owing to adopt between first back-up block 41 of first base plate 2 and left clamp mechanism 4; Offer horizontal elongated slot 21 on first base plate 2, first back-up block 41 is contained on the horizontal elongated slot 21 can horizontally slip, and corresponding first pressing plate 42 is being offered first mounting hole 421 with the junction of first screw rod 43; Such first back-up block 41 can both guarantee when resting on any position of horizontal elongated slot 21 that first pressing plate 42 is followed the tracks of and compress, and the clamp mechanism 4 that makes the left side has also been controlled the distortion of workpiece pipe left and right directions when guaranteeing to compress; And right clamp mechanism 5 is mainly reflected in being connected of cylindrical piece 551 of hinge support plate mechanism 52 and second back-up block, 55 downsides; They can be according to the different height of regulating left side clamp mechanism 4 and right side clamp mechanism 5 automatically of two cylindrical tube weight of workpiece; So just can control the distortion of workpiece above-below direction, and the cylindrical piece 551 below second back-up block 55 can rotate on gripper shoe 522, so just can control the distortion of other directions; The combination of left side clamp mechanism 4 and right clamp mechanism 5; When making workpiece be fixed on the frock, moving is fixture component, rather than the shape of workpiece.Like this, when compressing, just can not change the original form of workpiece, guarantee that the cylindrical tube surface of workpiece contacts with wear-resistant block fully, and can not produce the problem that had changed the workpiece shape when compressing originally.
The above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineers and technicians in this area make the technical scheme of the utility model all should fall in the protection domain that claims of the utility model confirm.
Claims (3)
1. a pull bar positioning and clamping tool comprises base (1), first and second base plate (2,3), two left clamp mechanism (4) and right clamp mechanism (5) that structure is identical; Said first and second base plate (2,3) is installed on the left and right sides of base (1) upper surface, and distributing before and after two said left clamp mechanism (4) are is installed on first base plate (2); Said right clamp mechanism (5) is installed on second base plate (3), and said left clamp mechanism (4) comprises first back-up block (41), first pressing plate (42) and two first screw rods (43), said first pressing plate (42) be positioned at first back-up block (41) above; Said first back-up block (41) is installed on first base plate (2), and the lower surface of the upper surface of said first back-up block (41) and first pressing plate (42) is respectively equipped with first and second V-shaped groove (411,421); Said first and second V-shaped groove (411,421) is corresponding up and down, said first and second V-shaped groove (411; 421) be connected with two wear-resistant blocks (412,422) on the wall respectively, it is characterized in that: the lower end of said first back-up block (41) is provided with slide block (413); Be positioned on first base plate (2) corresponding below the said slide block (413) and be processed with a horizontal elongated slot (21), said slide block (413) is installed in the horizontal elongated slot (21), and portion is arranged with two first mounting holes (423) about said first pressing plate (42); Two said first screw rods (43) pass first mounting hole (423) back and first base plate (2) on two first pressing plates (42) respectively and are spirally connected fixingly, are positioned at first nut (44) that is spirally connected respectively on two said first screw rods (43) of said first pressing plate (42) top, and said horizontal elongated slot (21) is positioned between two said first screw rods (43); Said right clamp mechanism (5) comprises two pawl pressing plates (51), hinge support plate mechanism (52), second screw rod (53), chute (54) and two second back-up blocks (55); Said hinge support panel assembly (52) comprises two fixed blocks (521) and a gripper shoe (522), is distributed in the upper surface middle part of second pressing plate (3) about two said fixed blocks (521) are, and connects bearing pin between two said fixed blocks (521); The middle part of said gripper shoe (522) is hinged on the bearing pin; The front and rear part of said gripper shoe (522) is arranged with two through holes, and the lower end of two said second back-up blocks (55) is respectively equipped with a cylindrical piece (551), and two said cylindrical pieces (551) are installed on respectively in two through holes of gripper shoe (522); Said pair of pawl pressing plate (51) is installed on the top of two said second back-up blocks (55); The upper surface of two said second back-up blocks (55) is respectively equipped with the 3rd V-shaped groove (552), is separately installed with two wear-resistant blocks (5521) on two said the 3rd V-shaped grooves (552), the Y shape plate that said pair of pawl pressing plate (51) is made up of two parallel the 3rd pressing plates (511) and a connecting rod (512); The lower surface of two said the 3rd pressing plates (511) is corresponding with the upper surface position of two second back-up blocks (55) respectively; The lower end of two said the 3rd pressing plates (511) is respectively equipped with briquetting (5111), and the lower surface of two said briquettings (5111) is arc surface, and the middle part of said connecting rod (512) is provided with second mounting hole (5121); Second mounting hole (5121) back that said second screw rod (53) passes connecting rod (512) is spirally connected fixing with second base plate (3); Be positioned on second screw rod (53) above the said connecting rod (512) second nut (56) is installed, the upper surface right side of said second base plate (3) vertically is provided with chute (54), and the right-hand member of said connecting rod (512) vertically is against chute (54) internal chamber wall.
2. pull bar positioning and clamping tool as claimed in claim 1; It is characterized in that: said first and second base plate (2; 3) upper surface homonymy is provided with first and second positioning cylinder (6 respectively; 7), said first positioning cylinder (6) is installed between two first pressing plates (42) of first base plate (2) and near the right side of one of them first pressing plate (42), and said second positioning cylinder (7) is installed between two second back-up blocks (55) of second base plate (3) and near the left side of one of them second back-up block (55).
3. according to claim 1 or claim 2 pull bar positioning and clamping tool, it is characterized in that: the cross section of said chute (54) is the U type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201795370U CN202114500U (en) | 2011-05-31 | 2011-05-31 | Pull rod positioning clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201795370U CN202114500U (en) | 2011-05-31 | 2011-05-31 | Pull rod positioning clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202114500U true CN202114500U (en) | 2012-01-18 |
Family
ID=45455598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201795370U Expired - Lifetime CN202114500U (en) | 2011-05-31 | 2011-05-31 | Pull rod positioning clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202114500U (en) |
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| CN110883616A (en) * | 2019-11-15 | 2020-03-17 | 湖北坚丰科技股份有限公司 | Grinding method for motor shaft of new energy automobile |
| CN112192466A (en) * | 2020-09-25 | 2021-01-08 | 嘉兴晋发金属材料有限公司 | Clamp for screw machining |
| CN115139068A (en) * | 2021-03-29 | 2022-10-04 | 宝山钢铁股份有限公司 | Large-scale nut dismouting device |
-
2011
- 2011-05-31 CN CN2011201795370U patent/CN202114500U/en not_active Expired - Lifetime
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| CN102601424A (en) * | 2012-03-16 | 2012-07-25 | 无锡市蓝力机床有限公司 | Drilling tooling die of pin shaft |
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| CN102806373A (en) * | 2012-08-30 | 2012-12-05 | 芜湖通和汽车管路系统有限公司 | Drilling device for automobile pipeline and method for using drilling device |
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| CN104647087A (en) * | 2015-01-09 | 2015-05-27 | 池州共康汽车零部件有限公司 | Total length fixing equipment for shaft part |
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| CN106392703B (en) * | 2016-11-11 | 2018-08-28 | 四川多联实业有限公司 | A kind of adjustable system that is fixedly clamped of PVC pipe |
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| CN106363436A (en) * | 2016-11-27 | 2017-02-01 | 洛阳丰泰铝业有限公司 | Clamp special for milling of systematic doors and windows |
| CN107342560A (en) * | 2017-01-04 | 2017-11-10 | 广州雅隆自动化设备有限公司 | A kind of convenient power cable clamping frame |
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| CN106783160B (en) * | 2017-01-19 | 2018-06-19 | 苏州廖若机电科技有限公司 | A kind of guide pole positioning device of small-sized capacitor core |
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| CN106826291B (en) * | 2017-03-14 | 2019-03-05 | 贵阳云航机械有限公司 | The special-shaped workpiece clamp structure of second level fastening can be achieved |
| CN106826291A (en) * | 2017-03-14 | 2017-06-13 | 成都亨通兆业精密机械有限公司 | It is capable of achieving two grades of special-shaped workpiece clamp structures of fastening |
| CN106944845A (en) * | 2017-03-16 | 2017-07-14 | 湖南德魅信息技术有限公司 | A kind of revolving parts clamp for machining |
| CN108381452A (en) * | 2018-04-28 | 2018-08-10 | 蚌埠液力机械有限公司 | Assemble the clamping tool of transverse hydro-cylinder |
| CN108527205A (en) * | 2018-06-13 | 2018-09-14 | 张家港市智周工业技术有限公司 | A kind of circular shaft special fixture |
| CN108890329A (en) * | 2018-07-05 | 2018-11-27 | 江苏蔚金模塑股份有限公司 | The fixture of slot is cut on axis |
| CN108857499A (en) * | 2018-08-31 | 2018-11-23 | 无锡和宏精密制造有限公司 | A kind of pillow block fixture |
| CN109434498A (en) * | 2018-11-13 | 2019-03-08 | 南通利联机床制造有限公司 | Fixing tool is used in a kind of slice anti-deformation processing of calcium ingot end face |
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| CN109454077A (en) * | 2018-12-06 | 2019-03-12 | 浙江湖州中盟智能科技有限公司 | A kind of drum cleaning device and its application method |
| CN109773519A (en) * | 2019-02-09 | 2019-05-21 | 沈阳富创精密设备有限公司 | A kind of mo(u)lded piece supporting tool |
| CN110052726A (en) * | 2019-04-11 | 2019-07-26 | 武汉船用机械有限责任公司 | The processing tool of rod-shaped workpiece |
| CN110883616A (en) * | 2019-11-15 | 2020-03-17 | 湖北坚丰科技股份有限公司 | Grinding method for motor shaft of new energy automobile |
| CN112192466A (en) * | 2020-09-25 | 2021-01-08 | 嘉兴晋发金属材料有限公司 | Clamp for screw machining |
| CN115139068A (en) * | 2021-03-29 | 2022-10-04 | 宝山钢铁股份有限公司 | Large-scale nut dismouting device |
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Granted publication date: 20120118 |