CN114043269B - Flexible fixture system based on micro-deformation self-adaptive compensation positioning - Google Patents
Flexible fixture system based on micro-deformation self-adaptive compensation positioning Download PDFInfo
- Publication number
- CN114043269B CN114043269B CN202111443931.5A CN202111443931A CN114043269B CN 114043269 B CN114043269 B CN 114043269B CN 202111443931 A CN202111443931 A CN 202111443931A CN 114043269 B CN114043269 B CN 114043269B
- Authority
- CN
- China
- Prior art keywords
- positioning
- strip
- fixture
- plate
- boss
- Prior art date
- 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.)
- Active
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 34
- 238000010030 laminating Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a flexible fixture system based on micro-deformation self-adaptive compensation positioning, which comprises a fixture base, a fixture positioning plate, blind rivets, a part positioning disc and a clamping mechanism, wherein 2N positioning strip blocks are fixedly arranged on the lower end surface of the part positioning disc, N is more than or equal to 2, the positioning strip blocks radially extend along the part positioning disc and are uniformly distributed along the circumferential direction, first positioning inclined surfaces are arranged on two side surfaces of the positioning strip blocks, and first compression surfaces are arranged beside two sides of the positioning strip blocks; the upper end surface of the fixture positioning plate is provided with 2N strip-shaped positioning grooves extending along the radial direction of the central taper hole, two side wall surfaces of the strip-shaped positioning grooves form a second positioning inclined surface, a cutting groove is formed in the second positioning inclined surface, and a second compression surface is arranged on the fixture positioning plate beside two sides of the strip-shaped positioning grooves; when the part positioning disc is clamped, the part positioning disc is abutted against the clamp positioning plate, the positioning strip block is positioned in the corresponding strip-shaped positioning groove, and the first pressing surface is pressed on the second pressing surface, so that the second positioning inclined surface is deformed and pressed on the first positioning inclined surface.
Description
Technical Field
The invention relates to the field of high-end processing and manufacturing equipment, in particular to a flexible fixture system based on micro-deformation self-adaptive compensation positioning.
Background
In the machining process, the process equipment used for fastening the workpiece and keeping the correct position among the machine tool, the cutter and the workpiece becomes a clamp. The cooperating clamps are combined together to form a clamp system. In the machining process of most parts, a machine tool and a workpiece are connected by taking a clamp as a bridge, so that the machining precision is ensured, the labor productivity is improved, the process range of the machine tool is enlarged, and the manufacturing cost is reduced.
Practice proves that the flexible clamp system advocated to be manufactured rapidly, efficiently and green has more and more effects on shortening the market research and development period and reducing the product research and development cost of equipment manufacturing industry, so that higher requirements are put on the whole technical level of the related field of the flexible clamp. Especially, the diversification development of the product structure and the update of modern production modes taking digital manufacturing and informatization management as the dominant, the clamp system is required to be connected with the modern manufacturing technology, the outstanding problems of low standardization degree, low equipment utilization rate, stiff production line adjustment and the like in the traditional production line are broken through, and the flexible configuration and flexible manufacturing tasks of the clamp system in the production line are met. The existing clamp system has the problems of complex positioning and complex operation, and is difficult to meet the requirements of flexible configuration and flexible manufacturing tasks in a production line.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a flexible fixture system based on adaptive compensation positioning of micro-deformation, which can facilitate replacement of parts under the condition of unchanged positioning reference, realize rapid positioning, realize adaptive compensation positioning, ensure positioning accuracy, and improve adaptability and processing efficiency of the fixture system to diversified and customized production tasks.
In order to achieve the above purpose, the invention provides a flexible fixture system based on micro-deformation self-adaptive compensation positioning, which comprises a fixture base, a fixture positioning plate, a blind rivet, a part positioning disc and a clamping mechanism, wherein the fixture positioning plate is fixed on the fixture base, a central taper hole is arranged in the fixture positioning plate, the clamping mechanism is arranged in the fixture base and the fixture positioning plate, the part positioning disc is fixedly connected with one end of the blind rivet and keeps the two parts coaxial, the part positioning disc is used for positioning and clamping a part, 2N positioning strips are fixedly arranged on the lower end surface of the part positioning disc, N is more than or equal to 2, the positioning strips extend along the radial direction of the part positioning disc, the 2N positioning strips are uniformly arranged along the circumferential direction of the part positioning disc, first positioning inclined surfaces which incline downwards are arranged on two sides of the positioning strips, and first compression surfaces are also arranged on the part positioning disc beside two sides of the positioning strips; the upper end face of the fixture positioning plate is provided with 2N strip-shaped positioning grooves extending along the radial direction of the central taper hole, the strip-shaped positioning grooves correspond to the positioning strip blocks one by one, two side walls of the strip-shaped positioning grooves incline upwards to form second positioning inclined planes, the second positioning inclined planes are provided with cutting grooves, and the fixture positioning plate is provided with second compression surfaces beside the two sides of the strip-shaped positioning grooves; when the blind rivet is clamped by the clamping mechanism, the part positioning disc is abutted against the clamp positioning plate, the positioning strip block is positioned in the corresponding strip-shaped positioning groove, the first pressing surface is pressed on the second pressing surface, and the second positioning inclined surfaces on two sides of the strip-shaped positioning groove can deform and are pressed on the first positioning inclined surfaces on two sides of the positioning strip block.
Further, the cutting groove is provided with an elastic filler.
Further, the fixture positioning plate upper end is equipped with a plurality of crashproof cushion, the part positioning disk lower extreme is equipped with a plurality of crashproof recesses that correspond with crashproof cushion, the location strip piece is located in the bar constant head tank that corresponds when crashproof cushion is located in the crashproof recess that corresponds.
Further, a plurality of anti-collision positioning reference circles which are concentric with the center of the center taper hole and have different diameters are arranged on the clamp positioning plate, and a plurality of anti-collision cushion blocks are arranged on each anti-collision positioning reference circle.
Further, the fixture locating plate upper end is equipped with first laminating face, the part positioning disk lower extreme is equipped with the second laminating face relative with first laminating face, when the blind rivet is held well in the fixture locating plate, first laminating face is hugged closely with the second laminating face mutually.
Further, the fixture positioning plate upper end is equipped with first location boss, first binding face is constituteed to first location boss up end, part positioning disk lower extreme is equipped with the second location boss, second location boss lower extreme constitutes first binding face.
Further, a detection air channel is arranged in the clamp positioning plate, a detection air hole is formed in the first attaching surface, and the detection air hole is communicated with the detection air channel.
Further, a plurality of boss positioning reference circles which are concentric with the center of the center taper hole and have different diameters are arranged on the clamp positioning plate, and each boss positioning reference circle is provided with a first positioning boss which is matched with a second positioning boss of a part positioning disc with different radius sizes; the fixture positioning plate is internally provided with a plurality of mutually independent detection air circuits, detection air holes on the first positioning bosses positioned on the same boss positioning reference circle are communicated with the same detection air circuit, and detection air holes on the first positioning bosses positioned on different boss positioning reference circles are communicated with different detection air circuits.
Further, a plurality of first positioning bosses are uniformly distributed on each boss positioning reference circle.
Preferably, the outer side surface of the part positioning disc is provided with an I-shaped groove and a cutting plane.
As described above, the flexible adaptive zero point positioning device provided by the invention has the following beneficial effects:
through setting up location strip piece and location bar groove, during the use, the blind rivet inserts in the center taper hole, and the location strip piece inserts corresponding bar constant head tank, then fixture clamp blind rivet, part positioning disk offsets with the anchor clamps locating plate and leans on, realize the ascending location of part positioning disk axial, the circumference location of part positioning disk then realizes through the cooperation of even just symmetrical arrangement's location strip piece and bar constant head tank, the location strip piece inserts in the bar constant head tank, through setting up the cutting groove, make the second location inclined plane of bar constant head tank both sides have a trace denaturing space, first clamp surface compresses tightly on the second clamp surface, can make the second location inclined plane of bar constant head tank both sides produce deformation towards the inslot side, and compress tightly on the first location inclined plane of location strip piece both sides, thereby ensure that the location strip piece is fixed in the bar constant head tank, realize the location in the circumference. According to the flexible fixture system, the clamping and the quick replacement of the parts are realized through the disassembly and assembly of the part positioning disc, and the quick replacement requirement of a flexible manufacturing task on the fixture is met; the part positioning disk realizes circumferential accurate positioning through the cooperation of positioning strip piece and bar constant head tank to through cutting the groove, mutually constraint and self-adaptation are transferred and are shaped the variable between each positioning strip piece, compensate the interference deformation that the positioning strip piece caused because of symmetrical arrangement locate mode and cross positioning error, guarantee the precision of location.
Drawings
FIG. 1 is a schematic structural view of the flexible clamp system of the present invention.
Fig. 2 is a schematic structural view of a fixture positioning plate according to the present invention.
Fig. 3 is a schematic structural view of the part positioning plate in the present invention.
FIG. 4 is a schematic view of the part positioning plate of the present invention prior to installation on a fixture positioning plate.
FIG. 5 is a schematic view of the invention with a part positioning plate mounted on a fixture positioning plate.
Fig. 6 is a schematic structural view of a clamping mechanism in the present invention.
Description of element reference numerals
1. Clamp base
2. Clamp locating plate
3. Part positioning disk
3a connecting threaded hole
3b cutting plane
3c I-shaped groove
4. Blind rivet
5. Positioning bar block
5a first positioning inclined plane
6. Strip-shaped positioning groove
6a second positioning inclined plane
7. Cutting groove
7a elastic filler
8. First pressing surface
9. Second pressing surface
10. Center taper hole
11. Anti-collision cushion block
12. Anti-collision groove
13. First positioning boss
14. Second positioning boss
15. Detecting air holes
16. Piston
17. Clamping spring
18. Supporting table
19. Steel ball
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the invention, and the relative changes or modifications are not to be construed as essential to the scope of the invention.
Referring to fig. 1 to 6, the invention provides a flexible fixture system based on micro-deformation self-adaptive compensation positioning, which comprises a fixture base 1, a fixture positioning plate 2, a blind rivet 4, a part positioning disc 3 and a clamping mechanism, wherein the fixture positioning plate 2 is fixed on the fixture base 1, a central taper hole 10 is arranged in the fixture positioning plate 2, the clamping mechanism is arranged in the fixture base 1 and the fixture positioning plate 2, one ends of the part positioning disc 3 and the blind rivet 4 are fixedly connected and coaxial, the part positioning disc 3 is used for positioning and clamping a part, 2N positioning strips 5,N are fixedly arranged on the lower end surface of the part positioning disc 3, the positioning strips 5 radially extend along the part positioning disc 3, the 2N positioning strips 5 are uniformly arranged along the circumferential direction of the part positioning disc 3, the positioning strips 5 are symmetrically arranged in pairs, first positioning inclined surfaces 5a which incline downwards are arranged on two sides of the positioning strips 5, namely, the section is trapezoidal, the section is wide and narrow at the upper side and the two sides of the positioning strips 5 are also provided with first compression surfaces 8; the upper end of the fixture positioning plate 2 is provided with 2N strip-shaped positioning grooves 6 which extend along the radial direction of the central taper hole 10, the strip-shaped positioning grooves 6 are in one-to-one correspondence with the positioning strip blocks 5, two side walls of the strip-shaped positioning grooves 6 are upwards inclined to form second positioning inclined planes 6a, namely the section of each strip-shaped positioning groove 6 is trapezoid, the upper part of each strip-shaped positioning groove is wide, the lower part of each strip-shaped positioning groove is narrow, the second positioning inclined planes 6a are provided with cutting grooves 7, the fixture positioning plate 2 is provided with second compression faces 9 at the side parts of two sides of each strip-shaped positioning groove 6, and the second compression faces 9 are positioned above the cutting grooves 7; when the blind rivet 4 is clamped by the clamping mechanism, the part positioning disc 3 is abutted against the clamp positioning plate 2, the positioning strip block 5 is positioned in the corresponding strip-shaped positioning groove 6, the first pressing surface 8 is pressed on the second pressing surface 9, and the second positioning inclined surfaces 6a on two sides of the strip-shaped positioning groove 6 can deform and are pressed on the first positioning inclined surfaces 5a on two sides of the positioning strip block 5. The shape of the strip-shaped positioning groove 6 is matched with the shape of the positioning strip block 5, and the size of the strip-shaped positioning groove 6 is slightly larger than that of the positioning strip block 5, so that the positioning strip block 5 can be inserted into the strip-shaped positioning groove 6, and the second positioning inclined surface 6a and the first positioning inclined surface 5a are slightly interfered, and the slight gap between the second positioning inclined surface and the first positioning inclined surface is determined according to actual design requirements.
The basic working principle of the flexible clamp system related by the invention is as follows: during the use, with the coaxial rigid coupling of part positioning disk 3 and blind rivet 4, the blind rivet 4 inserts in the central taper hole 10, and the locating strip piece 5 inserts corresponding bar constant head tank 6, then fixture clamp blind rivet 4, part positioning disk 3 offsets with anchor clamps locating plate 2 and leans on, realize the ascending location of part positioning disk 3 axial, the circumference location of part positioning disk 3 then realizes through the cooperation of evenly and symmetrical arrangement locating strip piece 5 and bar constant head tank 6, specifically, when blind rivet 4 is locked, the locating strip piece 5 inserts bar constant head tank 6, because locating strip piece 5 and bar constant head tank 6 all evenly and the symmetry sets up, in order to avoid appearing crossing the location problem, bar constant head tank 6 size slightly is greater than locating strip piece 5, when part positioning disk 3 is locked through blind rivet 4, the first locating inclined plane 5a of locating strip piece 5 both sides can not all keep hugging closely with the second locating inclined plane 6a of microscale locating slot 6 both sides, thereby through setting up cutting groove 7, make the second locating inclined plane 6a of locating slot 6 both sides have the spatial profile 8 that the second locating inclined plane 6a of evenly just is tightly arranged on the locating slot 6a, thereby the tight location disk 5 is realized on the locating disk 5, the radial clamp 5 is pressed down on the locating disk 5, thereby the accurate deformation location piece 5 is realized in the locating disk 5, the locating plate is pressed down on the locating slot 5 is located on the second locating slot 5, the locating plate 5 is realized, the radial clamp is compressed tightly is pressed down on the locating piece 5, and is located on the locating piece 5, thereby the locating piece is located down on the locating piece 5, and is located down tightly, and is located down on the locating plate 5, and is located down on the locating plate 5.
According to the flexible fixture system, the fixture base 1 and the fixture positioning plate 2 are not required to be disassembled, the clamping and the quick replacement of parts are realized through the disassembly and the assembly of the part positioning plate 3, and the quick replacement requirement of a flexible manufacturing task on the fixture is met; the part positioning disk 3 realizes circumferential accurate positioning through the cooperation of the positioning strip blocks 5 and the strip-shaped positioning grooves 6, and leads the strip-shaped positioning grooves 6 to generate micro deformation to a certain extent through the cutting grooves 7, the positioning strip blocks 5 are mutually restrained and self-adaptively adjust and reshape variables, the interference deformation and the over-positioning error caused by the symmetrical arrangement positioning mode of the positioning strip blocks 5 are compensated, and the positioning precision is ensured.
In the invention, the part positioning plate 3 can be provided with various sizes and types for parts with different sizes, the cross section size and the arrangement position of the positioning bar block 5 on the circumference of the lower part of the part positioning plate are kept the same, the length of the positioning bar block 5 and the position of the positioning bar block 5 on the radial direction of the part positioning plate 3 can be different and correspondingly arranged at different positions of the bar positioning groove 6, so that the part positioning plate 2 can be installed in position, the part positioning plate 3 with different sizes can be replaced without replacing the clamp base 1 and the clamp positioning plate 2 for parts with different sizes, the installation operation is convenient, the processing and installation requirements of the parts in a larger size range can be ensured, the flexible adaptation of the processing and clamping of the parts with multiple sizes can be realized, and the flexible adaptation function of the parts with multiple sizes can be realized.
Referring to fig. 1 to 6, the present invention is further described in the following embodiments:
in this embodiment, referring to fig. 3, 4 and 5, as a preferred design, the lower end of the part positioning disc 3 is provided with four positioning strips 5, which are distributed in a cross shape, and the upper end surface of the fixture positioning plate 2 is provided with four positioning slots 6, which are distributed in a cross shape and are in one-to-one correspondence with the positioning strips 5. In this embodiment, the cross-sectional shapes of the positioning bar 5 and the bar-shaped positioning groove 6 are isosceles trapezoids, and are rounded at the edges. In this embodiment, the thickness of the cutting groove 7 on the second positioning inclined surface 6a at both sides of the bar-shaped positioning groove 6 along the up-down direction and the depth thereof can be determined according to the deformation amount required at both sides of the actual bar-shaped positioning groove 6 and the material deformation capability of the fixture positioning plate 2, the cutting groove 7 is close to the bottom side of the second positioning inclined surface 6a, the cutting groove 7 is approximately level with the horizontal groove bottom of the bar-shaped positioning groove 6, and in particular, the cutting groove 7 is inclined downward at a certain angle along the horizontal direction so as to deform under the condition of being pressed.
Preferably, in this embodiment, referring to fig. 1, the cutting groove 7 has an elastic filler 7a, and the elastic filler 7a may be a resin material, and the cutting groove 7 is heated and filled with the thermoplastic resin material, and the filler conforming to the cutting groove 7 is formed after cooling. The elastic filler 7a has the function of preventing dust, greasy dirt, cutting scraps and other impurities from entering the cutting groove 7, prolonging the service life and stability of the cutting groove 7, and not responding to micro deformation when two sides of the strip-shaped positioning groove 6 are pressed.
In this embodiment, referring to fig. 2 and 5, as a preferred design, the upper end of the fixture positioning plate 2 is provided with a plurality of anti-collision cushion blocks 11, the anti-collision cushion blocks 11 can be made of elastic materials such as plastics, the lower end of the part positioning plate 3 is provided with a plurality of anti-collision grooves 12 corresponding to the anti-collision cushion blocks 11, when the part positioning plate 3 is installed, the lower end of the part positioning plate 3 abuts against the upper end of the fixture positioning plate 2, the anti-collision cushion blocks 11 are positioned in the anti-collision grooves 12, the protrusion height of the anti-collision cushion blocks 11 is higher than the protrusion height of the positioning bar blocks 5, and when the positioning bar blocks 5 are aligned with the bar positioning grooves 6 in the positioning installation process of the part positioning plate 3, the anti-collision grooves 12 are aligned with the anti-collision cushion blocks 11, at this time, the part positioning plate 3 can be smoothly installed, and the anti-collision cushion blocks 11 do not interfere with the part positioning plate 3; if the positioning bar block 5 is not aligned with the bar-shaped positioning groove 6, the part positioning disc 3 and the positioning bar block 5 only collide with the anti-collision cushion block 11 during installation, but not directly collide with the upper surface of the clamp positioning plate 2 and other structures on the upper surface, so that the part positioning disc 3 and the positioning bar block 5 are prevented from being damaged by collision to influence the positioning precision, and the reliability and the stability of the clamp system are improved.
Further preferably, referring to fig. 2, the fixture positioning plate 2 is provided with a plurality of anti-collision positioning reference circles (virtual circles, non-real objects, only for positioning reference) concentric with the central taper hole 10 and different in diameter, each anti-collision positioning reference circle is provided with a plurality of anti-collision cushion blocks 11, so as to form a circle of anti-collision cushion blocks 11, specifically in this embodiment, the anti-collision cushion blocks 11 with inner and outer circles of anti-collision cushion blocks 11 are provided, more than two circles of anti-collision cushion blocks 11 can be provided, the anti-collision cushion blocks 11 on different anti-collision positioning reference circles are used for being matched with part positioning disks 3 with different radius sizes, one circle or two circles of anti-collision grooves 12 are provided at the lower end of the part positioning disk 3 according to the radius condition of the part positioning disk, and particularly in this embodiment, referring to fig. 2 and 3, as the part positioning disk 3 covers the outer circle of anti-collision cushion blocks 11, two circles of anti-collision grooves 12 are provided at the lower end of the part positioning disk 3, and are respectively matched with the inner circle of anti-collision cushion blocks 11.
In this embodiment, referring to fig. 1, 2 and 4, as a preferred design, the upper end of the fixture positioning plate 2 is provided with a first positioning boss 13, the upper end plane of the first positioning boss 13 forms a first bonding surface, the lower end of the part positioning disk 3 is also provided with a second positioning boss 14, the lower end surface of the second positioning boss 14 forms a second bonding surface, the second positioning boss 14 is opposite to the first positioning boss 13, and when the blind rivet 4 is clamped in the fixture positioning plate 2, the first bonding surface is exactly clung to the second bonding surface, so that the axial positioning of the part positioning disk 3 during assembly is further ensured.
In this embodiment, referring to fig. 2, the fixture positioning plate 2 is provided with a plurality of boss positioning reference circles (virtual circles, non-real objects, for positioning reference only) concentric with the central taper hole 10 and different in diameter, and each boss positioning reference circle is provided with a first positioning boss 13, preferably, each boss positioning reference circle is uniformly provided with a plurality of first positioning bosses 13 to form a circle of first positioning bosses 13, and correspondingly, the part positioning disk 3 is provided with one circle or two circles of second positioning bosses 14 according to the radius condition thereof, specifically in this embodiment, the first positioning bosses 13 on different boss positioning reference circles are used for matching with the second positioning bosses 14 on the part positioning disk 3 with different radius sizes, and for ensuring the assembly stability of the part positioning disk 3 with different radius sizes, the second positioning bosses 14 on the boss positioning reference circles are generally different in circle center distance from the part positioning disk 3, and the larger the second positioning bosses 14 are located closer to the edge. The clamp positioning plate 2 adopts a mode of a plurality of circles of first positioning bosses 13, so that the positioning function of the part positioning plate 3 with different size ranges can be realized, and the flexible production requirement is met.
In this embodiment, a first bonding surface at the upper end of the first positioning boss 13 is provided with a detection air hole 15, the detection air hole 15 is communicated with a detection air channel (not shown in the drawing), a plurality of mutually independent detection air channels are arranged in the fixture positioning plate 2, the detection air holes 15 of the first positioning boss 13 positioned on the same boss positioning reference circle are all communicated with the same detection air channel, and the detection air holes 15 of the first positioning bosses 13 positioned on different boss positioning reference circles are communicated with different detection air channels. Therefore, when the part positioning plate 3 with different sizes is assembled, the second bonding surface on the part positioning plate 3 is matched with the first bonding surface on the first positioning boss 13 with different circles, and the corresponding detection air passage is utilized for carrying out air inflation detection to judge the clamping state, specifically, when the blind rivet 4 is clamped, the part positioning plate 3 is assembled, the first bonding surface and the second bonding surface are tightly bonded, the detection air hole 15 on the first bonding surface can be blocked, at this time, the detection air passage is inflated through the detection device, if the air leakage problem exists at the detection air hole 15, the first bonding surface and the second bonding surface are not tightly bonded, the clamping is not well, and if the air leakage is not avoided or the air leakage is within the allowable air leakage range, the part positioning plate 3 is positioned and installed, so that the detection of the clamping state of the flexible clamp system can be conveniently realized, and the working stability of the device is improved.
In this embodiment, referring to fig. 1 and 4, as a preferred arrangement, the center of the part positioning disk 3 is provided with a connecting threaded hole 3a, a bolt is used to pass through the connecting threaded hole 3a to be fixedly connected with the blind rivet 4, and the central axes of the blind rivet 4 and the part positioning disk 3 are ensured to coincide, four waist-shaped bosses are arranged around the connecting threaded hole 3a in the center of the lower surface of the part positioning disk 3 in a circumferential array manner and are used for being tightly matched with the plane of the blind rivet 4 close to the end part so as to avoid the error of perpendicularity of the blind rivet 4 caused by the connection of the bolt, namely, the blind rivet 4 is prevented from being not coaxial with the part positioning disk 3, and the reliable contact and accurate positioning of the blind rivet 4 and the part positioning disk 3 are ensured. The upper surface of the part positioning disk 3 is provided with a threaded hole and a positioning pin hole for fixing the processed part or an auxiliary clamping tool. The outer peripheral surface of the part positioning disc 3 is provided with an I-shaped groove 3c and a cutting plane 3b for being matched with mechanical calipers for carrying, so that automatic carrying and installation are realized. Rounded corners are arranged at the lower edges of the blind nails 4 so as to guide the parts into the center taper holes 10 when the parts positioning disc 3 is quickly replaced.
In the present embodiment, referring to fig. 1 and 5, in the present embodiment, a jig base 1 is provided with screw holes in a circumferential array, and is fixedly connected with a jig positioning plate 2 by bolts. The clamping mechanism is arranged in the clamp base 1 and the clamp positioning plate 2, and in the invention, the clamping mechanism can adopt various suitable structures in the existing clamps. Referring to fig. 6, in the present embodiment, the clamping mechanism includes a clamping spring 17, a piston 16, a support table 18, and a steel ball 19, the piston 16 is disposed in the clamp base 1, the clamping spring 17 is located at the lower end of the piston 16, and the lower end abuts against the clamp base 1, the clamp positioning plate 2 is located above the piston 16, a sealing air cavity is provided between the clamp positioning plate 2 and the piston 16, and an air passage is provided in the clamp positioning plate 2, and can be ventilated into the sealing air cavity, an inner hole is provided in the middle of the support table 18, forming the lower end portion of the central taper hole 10, for inserting the blind rivet 4. The upper end of the supporting table 18 is provided with a conical surface, the inner side is high, the outer side is low, steel balls 19 are positioned on the conical surface and are distributed in a circumferential array, the piston 16 is sleeved on the outer side of the supporting table 18, the inner side of the piston 16 is provided with a guiding inclined surface extending outwards, and the outer sides of the steel balls 19 are propped against the inner side surface of the piston 16. The middle section of the blind rivet 4 is provided with a conical surface matched with the steel ball 19. When the gas circuit in the fixture positioning plate 2 is closed, the piston 16 is pushed to move upwards by the clamping spring 17, and the steel balls 19 are driven to move inwards on the conical surface at the upper end of the supporting table 18 when the piston 16 moves upwards and are attached to the conical surface at the middle part of the blind rivet 4, so that the blind rivet 4 is clamped; when the sealing air cavity is inflated through the air channel of the clamp positioning plate 2 during loosening, the piston 16 is pushed to move downwards by high pressure and the clamping spring 17 is compressed, when the guide inclined surface on the inner side of the piston 16 reaches the steel ball 19, the steel ball 19 moves outwards on the conical surface at the upper end of the supporting table 18 under the action of gravity, and the clamping of the blind rivet 4 is loosened. Of course, the clamping mechanism is not limited to the above-mentioned structure, and may be other structures. In addition, an air pressure circuit can be provided inside the holder base 1 and the holder positioning plate 2 for chip cleaning.
From the above, the flexible fixture system in this embodiment has the following technical effects:
1. the flexible fixture system has the advantages that the quick replacement of the parts to be processed can be realized, the unification of the positioning reference of the fixture system is met, compared with the traditional fixture, the flexible fixture system shortens the clamping time and lightens the labor intensity under the condition of ensuring reliable clamping and accurate positioning, is suitable for the automatic feeding and discharging process, and effectively improves the production and processing efficiency.
2. Utilize location strip piece 5 and bar constant head tank 6 that even and symmetry set up, realized the quick accurate positioning to spare positioning disk 3 to through setting up cutting groove 7, make bar constant head tank 6 produce the micro deformation of certain degree, each restraint and self-adaptation between the location strip piece 5 transfer plastic variable, compensation location strip piece 5 is because of the interference deformation and the positioning error that the symmetrical arrangement locate mode caused, guarantee the precision of location.
3. The flexible clamping requirement on the processing task of parts in multiple size ranges can be met, the positioning function adaptation of the positioning disc 3 of the parts in different sizes is realized by arranging the strip-shaped positioning grooves 6 distributed in a cross shape in a larger length size range, and the flexible adaptation of the positioning disc in different sizes is realized by arranging an inner auxiliary functional part and an outer auxiliary functional part (comprising the anti-collision cushion block 11, the first positioning boss 13 and the detection air hole 15); when the fixture is used, the fixture base 1 is not required to be disassembled, and the fixture system can position and clamp parts with different sizes only by replacing the part positioning disc 3 with different sizes, so that the flexible processing tasks of customizing, diversifying and multi-size-range parts are met.
In summary, the present invention effectively overcomes the disadvantages of the prior art and has high industrial utility value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. The utility model provides a flexible fixture system based on little deformation self-adaptation compensation location, includes anchor clamps base (1), anchor clamps locating plate (2), blind rivet (4), part positioning disk (3) and fixture, anchor clamps locating plate (2) are fixed on anchor clamps base (1), be equipped with center taper hole (10) in anchor clamps locating plate (2), fixture sets up in anchor clamps base (1) and anchor clamps locating plate (2), part positioning disk (3) and blind rivet (4) one end fixed connection and both remain coaxial, part positioning disk (3) are used for the location centre gripping part, its characterized in that: 2N positioning strip blocks (5) are fixedly arranged on the lower end face of the part positioning disc (3), N is more than or equal to 2, the positioning strip blocks (5) radially extend along the part positioning disc (3), the 2N positioning strip blocks (5) are uniformly distributed along the circumferential direction of the part positioning disc (3), first positioning inclined planes (5 a) which incline downwards are arranged on two side faces of the positioning strip blocks (5), and first compression faces (8) are further arranged on the part positioning disc (3) beside two sides of the positioning strip blocks (5); the fixture positioning plate (2) is provided with 2N strip-shaped positioning grooves (6) extending along the radial direction of the central taper hole (10), the strip-shaped positioning grooves (6) are in one-to-one correspondence with the positioning strip blocks (5), two side walls of the strip-shaped positioning grooves (6) incline upwards to form second positioning inclined planes (6 a), the second positioning inclined planes (6 a) are provided with cutting grooves (7), and the fixture positioning plate (2) is provided with second compression surfaces (9) at two side parts of the strip-shaped positioning grooves (6); when the blind rivet (4) is clamped by the clamping mechanism, the part positioning disc (3) is abutted against the clamp positioning plate (2), the positioning strip block (5) is positioned in the corresponding strip-shaped positioning groove (6), the first pressing surface (8) is pressed on the second pressing surface (9), and the second positioning inclined surfaces (6 a) on two sides of the strip-shaped positioning groove (6) can deform and are pressed on the first positioning inclined surfaces (5 a) on two sides of the positioning strip block (5); the cutting groove (7) is internally provided with an elastic filler (7 a), and the elastic filler (7 a) fills the cutting groove (7) and does not influence the compression deformation of the two sides of the strip-shaped positioning groove (6); the upper end of the fixture positioning plate (2) is provided with a plurality of anti-collision cushion blocks (11), the lower end of the part positioning disc (3) is provided with a plurality of anti-collision grooves (12) corresponding to the anti-collision cushion blocks (11), and the anti-collision cushion blocks (11) are positioned in the corresponding anti-collision grooves (12) when the positioning strip blocks (5) are positioned in the corresponding strip-shaped positioning grooves (6); the fixture positioning plate (2) is provided with a plurality of anti-collision positioning reference circles which are concentric with the center of the center taper hole (10) and have different diameters, and each anti-collision positioning reference circle is provided with a plurality of anti-collision cushion blocks (11).
2. The flexible clamp system of claim 1, wherein: the fixture positioning plate (2) upper end is equipped with first laminating face, part positioning disk (3) lower extreme is equipped with the second laminating face relative with first laminating face, rivet (4) are when being held in fixture positioning plate (2), first laminating face is hugged closely mutually with the second laminating face.
3. The flexible clamp system of claim 2, wherein: the fixture positioning plate is characterized in that a first positioning boss (13) is arranged at the upper end of the fixture positioning plate (2), a first bonding surface is formed on the upper end face of the first positioning boss (13), a second positioning boss (14) is arranged at the lower end of the part positioning plate (3), and a first bonding surface is formed on the lower end face of the second positioning boss (14).
4. A flexible clip system according to claim 3, wherein: the fixture positioning plate (2) is internally provided with a detection air passage, the first attaching surface is provided with a detection air hole (15), and the detection air hole (15) is communicated with the detection air passage.
5. The flexible clamp system of claim 4, wherein: the fixture positioning plate (2) is provided with a plurality of boss positioning reference circles which are concentric with the center of the center taper hole (10) and have different diameters, each boss positioning reference circle is provided with a first positioning boss (13), and the first positioning bosses (13) on the different boss positioning reference circles are used for being matched with the second positioning bosses (14) of the part positioning plates (3) with different radius sizes; the fixture positioning plate (2) is internally provided with a plurality of mutually independent detection air circuits, detection air holes (15) on a first positioning boss (13) of the same boss positioning reference circle are communicated with the same detection air circuit, and detection air holes (15) on first positioning bosses (13) of different boss positioning reference circles are communicated with different detection air circuits.
6. The flexible clamp system of claim 5, wherein: a plurality of first positioning bosses (13) are uniformly distributed on each boss positioning reference circle.
7. The flexible clamp system of claim 1, wherein: an I-shaped groove (3 c) and a cutting plane (3 b) are formed in the outer side face of the part positioning disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443931.5A CN114043269B (en) | 2021-11-30 | 2021-11-30 | Flexible fixture system based on micro-deformation self-adaptive compensation positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443931.5A CN114043269B (en) | 2021-11-30 | 2021-11-30 | Flexible fixture system based on micro-deformation self-adaptive compensation positioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114043269A CN114043269A (en) | 2022-02-15 |
| CN114043269B true CN114043269B (en) | 2024-03-29 |
Family
ID=80211991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111443931.5A Active CN114043269B (en) | 2021-11-30 | 2021-11-30 | Flexible fixture system based on micro-deformation self-adaptive compensation positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114043269B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116551418B (en) * | 2023-07-07 | 2023-09-19 | 杭州鄂达精密机电科技有限公司 | Clamp for punching batch valve seats |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204053516U (en) * | 2014-07-01 | 2014-12-31 | 西安斯诺机械智能科技有限公司 | The flexible quick change supporting plate of a kind of high accuracy |
| CN204295371U (en) * | 2014-11-21 | 2015-04-29 | 西安斯诺机械智能科技有限公司 | The powerful clamping device of the flexible quick position of mistake proofing |
| CN105619139A (en) * | 2016-03-25 | 2016-06-01 | 沈阳机床成套设备有限责任公司 | Machine tool fixture rapid inserting oil line structure and manufacturing method |
| JP2016112659A (en) * | 2014-12-17 | 2016-06-23 | 嘉新精密有限公司 | Positioning block structure capable of elastically positioning machining jig |
| CN109202110A (en) * | 2018-11-20 | 2019-01-15 | 上海麦迅机床工具技术有限公司 | the positioning chuck of automatic processing system |
| CN212735131U (en) * | 2020-06-08 | 2021-03-19 | 苏州市联佳精密机械有限公司 | Clamping device |
-
2021
- 2021-11-30 CN CN202111443931.5A patent/CN114043269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204053516U (en) * | 2014-07-01 | 2014-12-31 | 西安斯诺机械智能科技有限公司 | The flexible quick change supporting plate of a kind of high accuracy |
| CN204295371U (en) * | 2014-11-21 | 2015-04-29 | 西安斯诺机械智能科技有限公司 | The powerful clamping device of the flexible quick position of mistake proofing |
| JP2016112659A (en) * | 2014-12-17 | 2016-06-23 | 嘉新精密有限公司 | Positioning block structure capable of elastically positioning machining jig |
| CN105619139A (en) * | 2016-03-25 | 2016-06-01 | 沈阳机床成套设备有限责任公司 | Machine tool fixture rapid inserting oil line structure and manufacturing method |
| CN109202110A (en) * | 2018-11-20 | 2019-01-15 | 上海麦迅机床工具技术有限公司 | the positioning chuck of automatic processing system |
| CN212735131U (en) * | 2020-06-08 | 2021-03-19 | 苏州市联佳精密机械有限公司 | Clamping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114043269A (en) | 2022-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109366242B (en) | Feeding and discharging and positioning device suitable for feeding and discharging flexible production line of robot | |
| CN114043269B (en) | Flexible fixture system based on micro-deformation self-adaptive compensation positioning | |
| CN201950235U (en) | Boring fixture for cross holes on differential case | |
| CN109318015B (en) | Quick positioning and clamping device | |
| CN111015313A (en) | Oil pressure quick positioning device | |
| JP2020001163A (en) | Modular clamp device | |
| CN202317779U (en) | Quick-change repeated positioning device for machining | |
| CN211803887U (en) | Novel horseshoe double-end-face turning clamp | |
| CN216482871U (en) | Clamp positioning pin detection mechanism | |
| CN210677813U (en) | Flexible side pressure anchor clamps based on CNC processing | |
| US20180236647A1 (en) | Fastener pusher with an improved workpiece-contact element | |
| CN114043265A (en) | Quick replacement's flexible adaptation positioner at zero point | |
| CN210255147U (en) | U-shaped thin-wall part supporting clamp | |
| CN218253928U (en) | Clamp structure capable of identifying clamp model and numerical control machine tool applying clamp structure | |
| CN211727555U (en) | Tension mandrel tool | |
| CN215432650U (en) | Positioning tool for 3C workpiece | |
| CN211803654U (en) | Rivet pay-off piece, rivet material feeding unit | |
| CN209565828U (en) | A kind of novel lathe fixture easy to operate | |
| CN217019534U (en) | Pneumatic locking type zero point positioning mechanism and machine tool | |
| CN220407917U (en) | CNC slide rail type internal stay clamp | |
| CN205763966U (en) | A kind of turning thin-walled parts chuck | |
| CN217776775U (en) | Positioning and clamping device | |
| CN205552062U (en) | Distance rod bulb anchor clamps | |
| CN219725391U (en) | CNC processing jig | |
| CN216759026U (en) | Zero point positioning quick replacing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 121, No. 189, Sunnan Road, Xinchang Town, Pudong New Area, Shanghai, 201314 Patentee after: Shanghai Xinlong Tobacoo Machinery Factory Country or region after: China Patentee after: SHANGHAI JIAO TONG University Address before: 201206 room 121, No. 189, Sun Nan Road, Xinchang Town, Pudong New Area, Shanghai Patentee before: Shanghai Xinlong Tobacco Machinery Factory Country or region before: China Patentee before: SHANGHAI JIAO TONG University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240807 Address after: 2555 Jinxiu East Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201206 Patentee after: SHANGHAI TOBACCO MACHINERY Co.,Ltd. Country or region after: China Patentee after: SHANGHAI JIAO TONG University Address before: Room 121, No. 189, Sunnan Road, Xinchang Town, Pudong New Area, Shanghai, 201314 Patentee before: Shanghai Xinlong Tobacoo Machinery Factory Country or region before: China Patentee before: SHANGHAI JIAO TONG University |