CN106826299B - Abrasive water jet is thrown and is bored and mill integrative clamping jig - Google Patents
Abrasive water jet is thrown and is bored and mill integrative clamping jig Download PDFInfo
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- CN106826299B CN106826299B CN201710229750.XA CN201710229750A CN106826299B CN 106826299 B CN106826299 B CN 106826299B CN 201710229750 A CN201710229750 A CN 201710229750A CN 106826299 B CN106826299 B CN 106826299B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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Abstract
The invention relates to an abrasive water jet polishing, drilling and milling integrated clamping fixture, which is characterized in that: comprises a clamping device, a supporting device and a hydraulic device; the clamping device comprises a fixed base, a first workpiece clamping piece, a second workpiece clamping piece, a third workpiece clamping piece and a fourth workpiece clamping piece, wherein the first workpiece clamping piece and the second workpiece clamping piece are arranged on the left side and the right side of the fixed base; the hydraulic device comprises a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, wherein the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are connected with a first workpiece clamping piece, a second workpiece clamping piece, a third workpiece clamping piece and a fourth workpiece clamping piece through ejector rods; the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are connected with the sequential clamping action loop and the simultaneous clamping action loop. The invention can realize simultaneous clamping of the opposite surfaces of the workpiece and sequential clamping operation of the adjacent surfaces, reduce the abrasion of the clamp during jet processing and improve the processing precision.
Description
Technical Field
The invention relates to an abrasive water jet polishing, drilling and milling integrated clamping fixture, in particular to a hydraulic automatic clamping device for processing a block-shaped plate by abrasive water jet polishing, milling and drilling.
Background
With the development of material science, the material performance is gradually improved, so that the processing of new materials is increasingly difficult, in particular to the processing of some hard and brittle materials, and some optical components and parts requiring ultra-high precision, artificial biological joints and the like. The abrasive water jet has the advantages of wide machining range, no heat influence area, no tool abrasion and the like, is gradually applied to cutting, polishing, milling and drilling operations as a cold machining method, greatly improves the machinability of novel hard and brittle materials, provides possibility for machining high-precision parts, and has wide scientific research and application prospects.
The design of the existing related clamping auxiliary tool for abrasive water jet machining mainly aims at disc parts or revolving body parts, and generally adopts the combination of a three-jaw chuck and a thimble, so that the clamping tool can be abraded as little as possible during jet machining. The square parts or materials are rarely involved, so that the square plates are kept fixed by the self weight during processing, or the parts are put into a designated frame for fixing, the frame is low in fixing flexibility, the frame needs to be designed according to the materials, and waste is caused. The fixing problem of the block material greatly limits the polishing precision of the block material, and is a great bottleneck for improving the polishing precision and the surface quality of the abrasive water jet.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an abrasive water jet polishing, drilling and milling integrated clamping fixture which can clamp a processing flat plate or block-shaped workpiece so as to realize precision processing.
According to the technical scheme provided by the invention, the abrasive water jet polishing, drilling and milling integrated clamping fixture is characterized in that: comprises a clamping device, a supporting device and a hydraulic device; the clamping device comprises a fixed base, a first workpiece clamping piece, a second workpiece clamping piece, a third workpiece clamping piece and a fourth workpiece clamping piece, wherein the first workpiece clamping piece and the second workpiece clamping piece are arranged on the left side and the right side of the fixed base; the hydraulic device comprises a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, wherein the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are respectively connected with a first workpiece clamping piece, a second workpiece clamping piece, a third workpiece clamping piece and a fourth workpiece clamping piece through ejector rods;
the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are connected with the sequential clamping action loop and the simultaneous clamping action loop;
the sequential clamping action loop comprises a hydraulic pump, an overflow valve, a first three-position four-way valve and a second three-position four-way valve; one end of the hydraulic pump is connected with an oil tank, the other end of the hydraulic pump is connected with an overflow valve, an oil supply port of a first three-position four-way valve and an oil supply port of a second three-position four-way valve, a left output port of the first three-position four-way valve is connected with a rodless cavity of a first hydraulic cylinder, a right output port of the first three-position four-way valve is connected with a rod cavity of a second hydraulic cylinder, the rod cavity of the first hydraulic cylinder is connected with a rodless cavity of the second hydraulic cylinder,
the left output port of the second three-position four-way valve is connected with the rodless cavity of the third hydraulic cylinder, the right output port of the second three-position four-way valve is connected with the rod cavity of the fourth hydraulic cylinder, and the rod cavity of the third hydraulic cylinder is connected with the rodless cavity of the fourth hydraulic cylinder;
the simultaneous clamping action loop comprises a third three-position four-way valve, a fourth three-position four-way valve, a first one-way valve and a second one-way valve; an oil supply port of the third three-position four-way valve is connected with a hydraulic pump, an output port of the third three-position four-way valve is connected with an inlet end of a first one-way valve, and an outlet end of the first one-way valve is connected with a rod cavity of the first hydraulic cylinder and a rodless cavity of the second hydraulic cylinder; and an oil supply port of the fourth three-position four-way valve is connected with a hydraulic pump, an output port of the fourth three-position four-way valve is connected with an inlet end of a second one-way valve, and an outlet end of the second one-way valve is connected with a rod cavity of the third hydraulic cylinder and a rodless cavity of the fourth hydraulic cylinder.
Further, strutting arrangement includes telescopic link, thrust plate and backup pad, and the backup pad can be dismantled and connect in the one end of telescopic link, and the thrust plate is connected in the other end of telescopic link, and the thrust plate is located unable adjustment base's the outside, and the thrust plate plays limiting displacement to the telescopic link with unable adjustment base's marginal cooperation.
Furthermore, an opening is formed in the supporting plate, so that the telescopic rod retracts from the opening after the telescopic rod is detached from the supporting plate.
Furthermore, a hollow area is reserved in the middle of the fixing base and used as a water jet machining operation area, and the supporting plate is located in the hollow area and used for supporting the workpiece.
Furthermore, the fixed base is provided with a telescopic groove corresponding to the telescopic rod.
Furthermore, pressure sensors are respectively arranged on the first workpiece clamping piece, the second workpiece clamping piece, the third workpiece clamping piece and the fourth workpiece clamping piece.
Furthermore, a left output port of the first three-position four-way valve is connected with a first electromagnetic relay, and a right output port of the first three-position four-way valve is connected with a third electromagnetic relay; and a left output port of the second three-position four-way valve is connected with a fourth electromagnetic relay, and a right output port of the second three-position four-way valve is connected with a second electromagnetic relay.
The invention has the following beneficial effects:
(1) because of the divergent action of jet flow during water jet machining, the workpiece is fixed by adopting the traditional chuck, and particularly, the abrasion of the clamp is inevitably caused during drilling machining, and the abrasion of the clamp is greatly reduced by adopting a side fixing mode;
(2) the invention realizes simultaneous clamping of the opposite surfaces of the workpiece and sequential clamping of the adjacent surfaces, is convenient for positioning the position of the workpiece and provides a foundation for positioning and processing the workpiece;
(3) the clamping device is provided with the pressure sensor, so that the clamping force can be set when different materials are clamped, and the deformation deflection of a workpiece is greatly reduced when the workpiece is clamped.
Drawings
Fig. 1 is a schematic structural diagram of an abrasive water jet polishing, drilling and milling integrated clamping fixture.
FIG. 2 is a schematic view of the support apparatus when the workpiece is unclamped.
Fig. 3 is a schematic diagram of a hydraulic action circuit of the abrasive water jet polishing, drilling and milling integrated clamping fixture.
Description of the reference numerals: 1-hydraulic pump, 2-overflow valve, 3-first three-position four-way valve, 4-second three-position four-way valve, 5-third three-position four-way valve, 6-fourth three-position four-way valve, 7-first electromagnetic relay, 8-second electromagnetic relay, 9-first hydraulic cylinder, 10-second hydraulic cylinder, 11-third hydraulic cylinder, 12-fourth hydraulic cylinder, 13-third electromagnetic relay, 14-fourth electromagnetic relay, 15-first check valve, 16-second check valve, 17-fixed base, 18-ejector pin, 19-guide rail, 20-1-first workpiece clamping piece, 20-2-second workpiece clamping piece, 20-3-third workpiece clamping piece, 20-4-fourth workpiece clamping piece, four-way valve, and four-way valve, 21-telescopic rod, 22-thrust plate, 23-pressure sensor and 24-support plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In the following description of the embodiment, the coordinates are referred to fig. 1, and the left-right direction in fig. 1 is the left-right direction, and the up-down direction is the front-back direction.
As shown in fig. 1, the abrasive water jet polishing, drilling and milling integrated clamping fixture comprises a clamping device, a supporting device and a hydraulic device; the clamping device comprises a fixed base 17, a first workpiece clamping piece 20-1 and a second workpiece clamping piece 20-2 which are arranged on the left side and the right side of the fixed base 17, and a third workpiece clamping piece 20-3 and a fourth workpiece clamping piece 20-4 which are arranged on the front side and the rear side of the fixed base 17, wherein the first workpiece clamping piece 20-1 and the second workpiece clamping piece 20-2 are oppositely arranged to form a first clamping opposite surface, the third workpiece clamping piece 20-3 and the fourth workpiece clamping piece 20-4 are oppositely arranged to form a second clamping opposite surface, 2 pressure sensors 23 are respectively arranged on the first workpiece clamping piece 20-1, the second workpiece clamping piece 20-2, the third workpiece clamping piece 20-3 and the fourth workpiece clamping piece 20-4 to prevent the workpiece from deflecting and deforming due to excessive workpiece clamping force; the hydraulic device comprises a first hydraulic cylinder 9, a second hydraulic cylinder 10, a third hydraulic cylinder 11 and a fourth hydraulic cylinder 12, wherein the first hydraulic cylinder 9, the second hydraulic cylinder 10, the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 are respectively connected with a first workpiece clamping piece 20-1, a second workpiece clamping piece 20-2, a third workpiece clamping piece 20-3 and a fourth workpiece clamping piece 20-4 through ejector rods 18; as shown in fig. 2, the supporting device includes an expansion link 21, a thrust plate 22 and a supporting plate 24, the supporting plate 24 is detachably connected to one end of the expansion link 21, the thrust plate 22 is connected to the other end of the expansion link 21, an opening is formed in the supporting plate 24, so that the expansion link 21 retracts from the opening after the expansion link 21 and the supporting plate 24 are detached, the thrust plate 22 is located outside the fixing base 17, and the thrust plate 22 and the fixing base 17 are matched at the edge to limit the expansion link 21. The fixed base 17 is made of 45 steel, the self weight can ensure the fixation of a workpiece and the base, the size of the fixed base 17 is 350mm multiplied by 350mm, a cylindrical hollow area with 200mm is reserved in the middle of the fixed base 17 and is used as a water jet machining operation area, the supporting plate 24 is located in the hollow area and is used for supporting the workpiece, and the fixed base 17 is provided with a telescopic groove corresponding to the telescopic rod 21.
The first hydraulic cylinder 9, the second hydraulic cylinder 10, the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 are connected with a sequential clamping action loop and a simultaneous clamping action loop.
As shown in fig. 3, the sequential clamping action circuit includes a hydraulic pump 1, a relief valve 2, a first three-position four-way valve 3, and a second three-position four-way valve 4; one end of the hydraulic pump 1 is connected with an oil tank, the other end of the hydraulic pump 1 is connected with an overflow valve 2, an oil supply port of a first three-position four-way valve 3 and an oil supply port of a second three-position four-way valve 4, a left output port of the first three-position four-way valve 3 is connected with a rodless cavity of a first hydraulic cylinder 9, a right output port of the first three-position four-way valve 3 is connected with a rod cavity of a second hydraulic cylinder 10, the rod cavity of the first hydraulic cylinder 9 is connected with a rodless cavity of the second hydraulic cylinder 10, a left output port of the second three-position four-way valve 4 is connected with a rodless cavity of a third hydraulic cylinder 11, a right output port of the second three-position four-way valve 4 is connected with a rod cavity of a fourth hydraulic cylinder 12, and the rod cavity of the third hydraulic cylinder 11 is connected with a rodless cavity of the fourth hydraulic cylinder 12; the left output port of the first three-position four-way valve 3 is connected with a first electromagnetic relay 7, and the right output port of the first three-position four-way valve 3 is connected with a third electromagnetic relay 13; and a left output port of the second three-position four-way valve 4 is connected with a fourth electromagnetic relay 14, and a right output port of the second three-position four-way valve 4 is connected with a second electromagnetic relay 8.
As shown in fig. 3, the simultaneous clamping action circuit includes a third three-position, four-way valve 5, a fourth three-position, four-way valve 6, a first check valve 15, and a second check valve 16; an oil supply port of the third three-position four-way valve 5 is connected with the hydraulic pump 1, an output port of the third three-position four-way valve 5 is connected with an inlet end of a first one-way valve 15, and an outlet end of the first one-way valve 15 is connected with a rod cavity of the first hydraulic cylinder 9 and a rodless cavity of the second hydraulic cylinder 10; an oil supply port of the fourth three-position four-way valve 6 is connected with the hydraulic pump 1, an output port of the fourth three-position four-way valve 6 is connected with an inlet end of a second one-way valve 16, and an outlet end of the second one-way valve 16 is connected with a rod cavity of the third hydraulic cylinder 11 and a rodless cavity of the fourth hydraulic cylinder 12.
The working process of the abrasive water jet polishing, drilling and milling integrated clamping fixture comprises the following steps:
(1) before the workpiece is placed, the telescopic rod 21 extends until the thrust plate 22 contacts the side surface of the fixed base 17; inserting the opening of the support plate 24 into the extended telescopic rod 21, and fixing the support plate 24 and the telescopic rod 21;
(2) placing the workpiece on the support plate 24 and simultaneously starting the hydraulic circuit;
when the electromagnet 1YA on the left side of the first three-position four-way valve 3 is electrified, the pistons of the first hydraulic cylinder 9 and the second hydraulic cylinder 10 move to the right, and the action stretching operation is completed; when a stop block is touched (or a workpiece is clamped), the system pressure rises, the first electromagnetic relay 7 and the third electromagnetic relay 13 send signals, the left electromagnet 3YA of the second three-position four-way valve 4 is electrified, and the pistons of the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 move to the right to complete the extending action; when the 3YA is powered off and the electromagnet 4YA on the right side of the second three-position four-way valve 4 is powered on, the pistons of the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 move left to finish the rod retraction action; when the piston reaches the end point, the system pressure rises, the second electromagnetic relay 8 and the fourth electromagnetic relay 14 send signals, so that the right electromagnet 2YA of the first three-position four-way valve 3 is electrified, the electromagnet 1YA is powered off, the piston of the first hydraulic cylinder 9 moves to the left, and the retraction action of the first hydraulic cylinder 9 and the second hydraulic cylinder 10 is completed. The first hydraulic cylinder 9 and the second hydraulic cylinder 10 are connected with the opposite first clamping opposite surfaces to clamp and release the left side and the right side of the workpiece, so that the workpiece is clamped and released completely. The second clamping opposite surface pushes a third workpiece clamping piece 20-3 and a fourth workpiece clamping piece 20-4 through a mandril 18 by a third hydraulic cylinder 11 and a fourth hydraulic cylinder 12 so as to clamp and release the second clamping opposite surface;
the simultaneous clamping action loop can enable the first clamping opposite surfaces where the first hydraulic cylinder 9 and the second hydraulic cylinder 10 are located to be simultaneously clamped, when the first hydraulic cylinder 9 and the second hydraulic cylinder 10 extend out simultaneously, if a piston of the first hydraulic cylinder 9 contacts a workpiece firstly, the first hydraulic cylinder 9 sends a signal corresponding to the pressure sensor, the electromagnet 5YA on the left side of the third three-position four-way valve 5 is electrified, pressure oil enters a rodless cavity of the second hydraulic cylinder 10 through an output port of the third three-position four-way valve 5 and the first one-way valve 15 to supplement the oil, and the piston continues to descend to reach a stroke end point. On the contrary, the second hydraulic cylinder 10 arrives first, the pressure oil is connected with the rod cavity of the third hydraulic cylinder 9 through the output port of the third three-position four-way valve 5, the first check valve 15 and the piston continues to move downwards;
the second clamping opposite surfaces where the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 are located clamp simultaneously, and the action rule is the same;
(3) after the workpiece is clamped, the telescopic rod 21 is disassembled along the opening of the supporting plate 24, and the telescopic rod 21 is retracted from the opening of the supporting plate 24 to be completely retracted into the telescopic groove on the fixed base 17;
(4) after the workpiece is machined, the action process of the supporting device is as in the step (1) to support the workpiece;
(5) the third hydraulic cylinder 11, the fourth hydraulic cylinder 12 and the corresponding ejector rod and the corresponding workpiece clamping plate retract simultaneously to release the second clamping opposite surface; the first hydraulic cylinder 9 and the second hydraulic cylinder 10 start to act when the third hydraulic cylinder 11 and the fourth hydraulic cylinder 12 are separated from the workpiece, the first clamping opposite surface is released, and the releasing operation of the workpiece is completed; whether the workpiece is separated or not is judged according to the state of the pressure sensor.
The clamping part of the abrasive water jet polishing, drilling and milling integrated clamping fixture can realize that one pair of opposite surfaces of a workpiece are clamped simultaneously, the other opposite surfaces are sequentially clamped, and meanwhile, the clamping speed of the opposite surfaces can be automatically adjusted to be the same.
Claims (5)
1. The utility model provides an integrative clamping jig of abrasive water jet throwing drilling and milling which characterized by: comprises a clamping device, a supporting device and a hydraulic device; the clamping device comprises a fixed base (17), a first workpiece clamping piece (20-1) and a second workpiece clamping piece (20-2) which are arranged on the left side and the right side of the fixed base (17), and a third workpiece clamping piece (20-3) and a fourth workpiece clamping piece (20-4) which are arranged on the front side and the rear side of the fixed base (17), wherein the first workpiece clamping piece (20-1) and the second workpiece clamping piece (20-2) are oppositely arranged to form a first clamping opposite surface, and the third workpiece clamping piece (20-3) and the fourth workpiece clamping piece (20-4) are oppositely arranged to form a second clamping opposite surface; the hydraulic device comprises a first hydraulic cylinder (9), a second hydraulic cylinder (10), a third hydraulic cylinder (11) and a fourth hydraulic cylinder (12), wherein the first hydraulic cylinder (9), the second hydraulic cylinder (10), the third hydraulic cylinder (11) and the fourth hydraulic cylinder (12) are respectively connected with a first workpiece clamping piece (20-1), a second workpiece clamping piece (20-2), a third workpiece clamping piece (20-3) and a fourth workpiece clamping piece (20-4) through ejector rods (18);
the first hydraulic cylinder (9), the second hydraulic cylinder (10), the third hydraulic cylinder (11) and the fourth hydraulic cylinder (12) are connected with the sequential clamping action loop and the simultaneous clamping action loop;
the sequential clamping action loop comprises a hydraulic pump (1), an overflow valve (2), a first three-position four-way valve (3) and a second three-position four-way valve (4); one end of the hydraulic pump (1) is connected with an oil tank, the other end of the hydraulic pump (1) is connected with an overflow valve (2), an oil supply port of a first three-position four-way valve (3) and an oil supply port of a second three-position four-way valve (4), a left output port of the first three-position four-way valve (3) is connected with a rodless cavity of a first hydraulic cylinder (9), a right output port of the first three-position four-way valve (3) is connected with a rod cavity of a second hydraulic cylinder (10), the rod cavity of the first hydraulic cylinder (9) is connected with a rodless cavity of the second hydraulic cylinder (10), a left output port of the second three-position four-way valve (4) is connected with a rodless cavity of a third hydraulic cylinder (11), a right output port of the second three-position four-way valve (4) is connected with a rod cavity of a fourth hydraulic cylinder (12), and the rod cavity of the third hydraulic cylinder (11) is connected with a rodless cavity of the fourth hydraulic cylinder (12);
the simultaneous clamping action loop comprises a third three-position four-way valve (5), a fourth three-position four-way valve (6), a first one-way valve (15) and a second one-way valve (16); an oil supply port of the third three-position four-way valve (5) is connected with the hydraulic pump (1), an output port of the third three-position four-way valve (5) is connected with an inlet end of a first one-way valve (15), and an outlet end of the first one-way valve (15) is connected with a rod cavity of the first hydraulic cylinder (9) and a rodless cavity of the second hydraulic cylinder (10); an oil supply port of the fourth three-position four-way valve (6) is connected with the hydraulic pump (1), an output port of the fourth three-position four-way valve (6) is connected with an inlet end of a second one-way valve (16), and an outlet end of the second one-way valve (16) is connected with a rod cavity of the third hydraulic cylinder (11) and a rodless cavity of the fourth hydraulic cylinder (12);
the supporting device comprises an expansion link (21), a thrust plate (22) and a supporting plate (24), the supporting plate (24) is detachably connected to one end of the expansion link (21), the thrust plate (22) is connected to the other end of the expansion link (21), the thrust plate (22) is located on the outer side of the fixed base (17), and the thrust plate (22) is matched with the edge of the fixed base (17) to limit the expansion link (21);
the left output port of the first three-position four-way valve (3) is connected with a first electromagnetic relay (7), and the right output port of the first three-position four-way valve (3) is connected with a third electromagnetic relay (13); and a left output port of the second three-position four-way valve (4) is connected with a fourth electromagnetic relay (14), and a right output port of the second three-position four-way valve (4) is connected with a second electromagnetic relay (8).
2. The abrasive water jet polishing, drilling and milling integrated clamping fixture as claimed in claim 1, wherein: an opening is arranged on the supporting plate (24), so that the telescopic rod (21) retracts from the opening after the telescopic rod (21) is detached from the supporting plate (24).
3. The abrasive water jet polishing, drilling and milling integrated clamping fixture as claimed in claim 1, wherein: a hollow area is reserved in the middle of the fixing base (17) and used as a water jet machining operation area, and the supporting plate (24) is located in the hollow area and used for supporting a workpiece.
4. The abrasive water jet polishing, drilling and milling integrated clamping fixture as claimed in claim 1, wherein: the fixed base (17) is provided with a telescopic groove corresponding to the telescopic rod (21).
5. The abrasive water jet polishing, drilling and milling integrated clamping fixture as claimed in claim 1, wherein: pressure sensors (23) are respectively arranged on the first workpiece clamping piece (20-1), the second workpiece clamping piece (20-2), the third workpiece clamping piece (20-3) and the fourth workpiece clamping piece (20-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229750.XA CN106826299B (en) | 2017-04-10 | 2017-04-10 | Abrasive water jet is thrown and is bored and mill integrative clamping jig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229750.XA CN106826299B (en) | 2017-04-10 | 2017-04-10 | Abrasive water jet is thrown and is bored and mill integrative clamping jig |
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| CN106826299A CN106826299A (en) | 2017-06-13 |
| CN106826299B true CN106826299B (en) | 2022-09-27 |
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| US4748570A (en) * | 1985-04-16 | 1988-05-31 | Kabushiki Kaisha Nippei Toyama | Clamping confirming device |
| KR970008321U (en) * | 1996-12-30 | 1997-03-27 | 주식회사흥환기계 | Universal milling machine's ball and hydraulic clamping device |
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| CN106826299A (en) | 2017-06-13 |
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