CN114654280B - CNC machining part fixing fixture and manufacturing method thereof - Google Patents
CNC machining part fixing fixture and manufacturing method thereof Download PDFInfo
- Publication number
- CN114654280B CN114654280B CN202210414724.5A CN202210414724A CN114654280B CN 114654280 B CN114654280 B CN 114654280B CN 202210414724 A CN202210414724 A CN 202210414724A CN 114654280 B CN114654280 B CN 114654280B
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- hole
- positioning
- plate
- sealing ring
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000003754 machining Methods 0.000 title claims description 13
- 238000001179 sorption measurement Methods 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims description 91
- 239000011265 semifinished product Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 16
- 239000011521 glass Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 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
- 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
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
本发明提供了一种CNC加工件固定治具及其制作方法，其中治具包括底板、垫板和定位板，在底板上设有第四负压通孔，在垫板上设有第三负压通孔、第一负压腔、第一真空吸气管及多个第二负压通孔，在定位板上设有第一吸附通槽、第一负压通孔及定位凸台，第一真空吸气管和第四负压通孔均可与真空负压源连接，真空负压源依次通过第一真空吸气管、第一负压腔及多个第二负压通孔将定位板吸附在垫板上，真空负压源依次通过第四负压通孔、第三负压通孔、第一吸附通槽及第一负压通孔将CNC加工件吸附在定位板上。本发明不仅可实现固定治具的循环使用及快速切换，降低治具制作成本、提高产品加工效率，而且可实现精准定位并在不同多轴机上切换加工不同品种的产品。
The present invention provides a CNC machined part fixing fixture and a manufacturing method thereof, wherein the fixture comprises a base plate, a pad plate and a positioning plate, a fourth negative pressure through hole is provided on the base plate, a third negative pressure through hole, a first negative pressure cavity, a first vacuum suction pipe and a plurality of second negative pressure through holes are provided on the pad plate, a first adsorption through slot, a first negative pressure through hole and a positioning boss are provided on the positioning plate, the first vacuum suction pipe and the fourth negative pressure through hole can both be connected to a vacuum negative pressure source, the vacuum negative pressure source sequentially adsorbs the positioning plate on the pad plate through the first vacuum suction pipe, the first negative pressure cavity and a plurality of second negative pressure through holes, and the vacuum negative pressure source sequentially adsorbs the CNC machined part on the positioning plate through the fourth negative pressure through hole, the third negative pressure through hole, the first adsorption through slot and the first negative pressure through hole. The present invention can not only realize the recycling and rapid switching of the fixed fixture, reduce the fixture manufacturing cost, and improve the product processing efficiency, but also realize accurate positioning and switch processing of different varieties of products on different multi-axis machines.
Description
Technical Field
The invention belongs to the technical field of fixtures for CNC equipment, and particularly relates to a fixture for fixing CNC machined parts and a manufacturing method thereof.
Background
Along with the improvement of aesthetic appearance of people, the visual effect of the appearance of the electronic product tends to be diversified and high-quality. At present, the texture, visual effect and hand feeling of the glass material are superior to those of the plastic material, and the display cover plate and the rear cover of the electronic product are increasingly made of the glass material, especially the glass cover plate with 2.5D and 3D structures is more and more demanded.
Because of the diversification and miniaturization of the glass cover plate product structure, the product varieties are required to be continuously switched in the production process in order to meet the demands of customers. However, the CNC processing mode of the traditional glass cover plate is that the fixed jig for positioning the glass cover plate needs to be replaced when a product is processed every time, and the fixed jig matched with the glass cover plate needs to be manufactured again, so that the problems of high consumption of semi-finished products of the jig, high manufacturing cost, time and labor consumption in disassembly and assembly and low product processing efficiency are caused. Furthermore, CNC machines currently used for processing glass cover plates have single-axis machines, double-axis machines and multi-axis machines, wherein the distances between the main shafts on the double-axis machines and the multi-axis machines are not uniform, which results in that the multiple jigs cannot be precisely positioned when being leveled and split, so that the fixed jigs can only be used on the fixed CNC machines and the fixed shafts.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present invention provides a CNC workpiece fixing jig and a manufacturing method thereof.
In a first aspect, the invention provides a CNC workpiece fixing jig applied to a CNC machine tool, wherein the fixing jig comprises:
the positioning plate is used for receiving CNC machined parts, and is provided with a first adsorption through groove, at least one first negative pressure through hole and at least one positioning boss, wherein the first negative pressure through hole and the positioning boss are arranged in one-to-one correspondence, and the first negative pressure through hole penetrates through the positioning plate;
the base plate is used for supporting the positioning plate and is positioned on the base plate through positioning pins, and a first negative pressure cavity, a first vacuum suction pipe, a plurality of second negative pressure through holes and a third negative pressure through hole are formed in the base plate, and the first vacuum suction pipe and the plurality of second negative pressure through holes are communicated with the first negative pressure cavity;
The base plate is fixedly arranged on the CNC processing platform and used for supporting and fixing the base plate, and is provided with a fourth negative pressure through hole which is communicated with the third negative pressure through hole;
The first vacuum suction pipe and the fourth negative pressure through holes are connected with a vacuum negative pressure source, the positioning plate is adsorbed on the base plate through the first vacuum suction pipe, the first negative pressure cavity and the plurality of second negative pressure through holes in a negative pressure state, and meanwhile CNC machining pieces are adsorbed on the positioning plate through the fourth negative pressure through holes, the third negative pressure through holes, the first adsorption through grooves and the first negative pressure through holes in a negative pressure state.
Compared with the prior art, the positioning plate and CNC machined parts are respectively fixed by utilizing independent vacuum negative pressure suction, namely, a first vacuum suction pipe, a first negative pressure cavity and a plurality of second negative pressure through holes which can be sequentially communicated with a vacuum negative pressure source are arranged on the base plate, so that a vacuum negative pressure suction first channel capable of adsorbing and fixing the positioning plate is formed on the base plate, a fourth negative pressure through hole capable of being communicated with the vacuum negative pressure source is arranged on the base plate, a third negative pressure through hole communicated with the fourth negative pressure through hole is arranged on the base plate, and a first adsorption through groove and a first negative pressure through hole which are communicated with the third negative pressure through hole are arranged on the positioning plate, so that a vacuum negative pressure suction second channel capable of adsorbing the CNC machined parts can be formed on the base plate, the base plate and the positioning plate.
Preferably, the first adsorption through grooves are staggered, and each first adsorption through groove is arranged among the plurality of second negative pressure through holes.
Preferably, a first sealing ring and a plurality of second sealing rings are arranged at the top of the base plate, the second sealing rings are arranged at the outer edges of the second negative pressure through holes, the first sealing rings are arranged at the outer edges of the areas occupied by the second negative pressure through holes, and the first sealing rings and the second sealing rings are used for sealing the cavity formed by overlapping the base plate and the positioning plate.
Preferably, the positioning plate is provided with a positioning boss and a first negative pressure through hole, the top surface of the positioning boss is provided with a second adsorption through groove, and the first negative pressure through hole is communicated with the second adsorption through groove and the first adsorption through groove.
Preferably, the positioning plate is provided with a plurality of positioning bosses and a plurality of first negative pressure through holes, the positioning bosses and the first negative pressure through holes are arranged in one-to-one correspondence, the positioning bosses are provided with adsorption cavities, and the first negative pressure through holes are communicated with the adsorption cavities and the first adsorption through grooves.
Preferably, the second negative pressure through hole comprises a plurality of adsorption holes arranged in an array.
Preferably, a second negative pressure cavity is dug at the top of the bottom plate, and the second negative pressure cavity and the first negative pressure cavity are correspondingly adapted.
Preferably, a third sealing ring and a fourth sealing ring are arranged at the top of the bottom plate, the third sealing ring is used for sealing the butt joint of the third negative pressure through hole and the fourth negative pressure through hole, and the fourth sealing ring is used for sealing a cavity formed by overlapping the bottom plate with the bottom plate.
Preferably, the positioning pin comprises a first positioning pin and a second positioning pin, the outer diameter of the first positioning pin is larger than that of the second positioning pin, and the positioning plate is provided with a first positioning hole and a second positioning hole which are respectively matched with the first positioning pin and the second positioning pin.
In a second aspect, the invention provides a method for manufacturing a CNC workpiece fixing jig, which is used for manufacturing the CNC workpiece fixing jig of the first aspect, and the manufacturing method comprises the following steps:
The method comprises the following steps of S1, leveling and fixing a processed bottom plate on a CNC processing platform, wherein a plurality of threaded holes, a plurality of second countersunk holes, a second negative pressure cavity, a fourth negative pressure through hole, a second vacuum suction pipe, a third sealing ring groove and a fourth sealing ring groove are formed in the bottom plate;
s2, dividing the bottom plate into middle parts, and setting and storing an origin;
S3, respectively installing a third sealing ring and a fourth sealing ring in the third sealing ring groove and the fourth sealing ring groove, and fixedly installing a base plate semi-finished product on the top surface of the base plate, wherein a plurality of first countersunk holes, a plurality of second negative pressure through holes, a third negative pressure through hole, a first negative pressure cavity, a first sealing ring groove, a second sealing ring groove and a first vacuum suction pipe are arranged on the base plate semi-finished product, the first negative pressure cavity and the second negative pressure cavity are correspondingly adapted, the third negative pressure through hole and the fourth negative pressure through hole are communicated, the first vacuum suction pipe and the plurality of second negative pressure through holes are respectively communicated with the first negative pressure cavity, the first countersunk holes and the threaded holes are correspondingly adapted, the second sealing ring groove is arranged on the outer edge of the second negative pressure through holes, the first sealing ring groove is arranged on the outer edge of the area occupied by the plurality of second negative pressure through holes, and the second negative pressure through holes comprise a plurality of adsorption holes arranged in an array;
S4, processing a first positioning pin hole and a second positioning pin hole on the top surface of the semi-finished product of the backing plate by taking the origin set in the step S2 as a reference to form the backing plate, and respectively installing the first positioning pin, the second positioning pin, a first sealing ring and a second sealing ring in the first positioning pin hole, the second positioning pin hole, the first sealing ring groove and the second sealing ring groove;
S5, mounting a semi-finished product of the positioning plate on the top surface of the base plate through the first positioning pin and the second positioning pin, connecting the first vacuum suction pipe with a vacuum negative pressure source, adsorbing the semi-finished product of the positioning plate on the base plate through the first vacuum suction pipe, the first negative pressure cavity and a plurality of second negative pressure through holes in a negative pressure state, wherein a first positioning hole, a second positioning hole and a first adsorption through groove are formed in the semi-finished product of the positioning plate, the first positioning hole and the second positioning hole are respectively matched with the first positioning pin and the second positioning pin, the first adsorption through grooves are staggered and are arranged among the plurality of second negative pressure through holes, and the first adsorption through groove is communicated with the third negative pressure through hole;
S6, processing at least one first negative pressure through hole and at least one positioning boss on a semi-finished product of the positioning plate by taking the origin set in the step S2 as a reference to form the positioning plate, wherein the positioning boss is matched with a CNC machined part, the first negative pressure through hole penetrates through the positioning plate, and the first negative pressure through hole is communicated with the first adsorption through groove.
Compared with the prior art, the invention has the beneficial effects that by manufacturing the first channel for respectively fixing the positioning plate and the second channel for adsorbing CNC workpieces by utilizing independent vacuum negative pressure suction, the cyclic use and the rapid switching of the CNC workpiece fixing jig can be realized, the manufacturing cost of the jig is reduced, the processing efficiency of products is improved, and the accurate positioning and the switching processing of products of different varieties on different biaxial machines and multiaxial machines can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 3 is another cross-sectional view of a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 4 is a top view of a positioning plate in a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 5 is a bottom view of a positioning plate in a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 6 is a top view of a shim plate in a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 7 is a bottom view of a shim plate in a CNC workpiece fixture according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a bottom plate of a CNC workpiece fixture according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a positioning plate in a CNC workpiece fixture according to a second embodiment of the present invention.
Reference numerals illustrate:
10-CNC machining;
20-positioning plates, 201-first negative pressure through holes, 202-first positioning holes, 203-second positioning holes, 204-first adsorption through grooves, 21-positioning bosses, 211-second adsorption through grooves and 212-adsorption cavities;
30-backing plate, 301-first countersunk hole, 302-second negative pressure through hole, 303-third negative pressure through hole, 304-first negative pressure cavity, 31-first locating pin, 32-second locating pin, 33-first sealing ring, 34-second sealing ring and 35-first vacuum suction pipe;
40-bottom plate, 401-screw hole, 402-second counter bore, 403-second negative pressure cavity, 404-fourth negative pressure through hole, 41-second vacuum suction pipe, 42-third sealing ring, 43-fourth sealing ring.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the invention and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally formed, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or in communication between two elements or in interaction with each other. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
On the one hand, the invention provides a CNC workpiece fixing jig for solving the technical problems in the prior art, achieving the purposes of improving the processing efficiency of products and reducing the manufacturing cost of the jig, and is specifically described as follows.
Embodiment one:
as shown in fig. 1, a schematic structure diagram of a CNC workpiece fixture according to the present embodiment is shown, and the CNC workpiece fixture includes a positioning plate 20, a backing plate 30, and a bottom plate 40. Specifically, the bottom plate 40 is fixedly installed on the CNC processing platform through 4 bolts, the backing plate 30 is fixedly installed on the top surface of the bottom plate 40 through 6 bolts, and the positioning plate 20 is fixedly adsorbed on the top surface of the backing plate 30 through 2 positioning pins and vacuum negative pressure suction.
The CNC machined part fixing jig provided by the embodiment can respectively fix the adsorption positioning plate 20 and the CNC machined part 10 by utilizing two independent vacuum negative pressure air suction channels, wherein the CNC machined part 10 is a glass cover plate. Therefore, the CNC machining fixture can be recycled and rapidly switched, the manufacturing cost of the fixture is reduced, the machining efficiency of products is improved, accurate positioning can be realized, and products of different varieties can be switched and machined on different double-shaft machines and multiple-shaft machines, so that the universality is enhanced.
As shown in fig. 2,3, 7 and 8, an inward concave second negative pressure cavity 403 is arranged in the middle of the top surface of the bottom plate 40, a fourth sealing ring groove (not shown in the figure) is arranged on the top surface of the bottom plate 40 and at the outer edge of the second negative pressure cavity 403, a fourth sealing ring 43 is installed in the fourth sealing ring groove, 6 threaded holes 401 and 4 second counter holes 402 are arranged on the periphery of the bottom plate 40 and at the outer edge of the second negative pressure cavity 403, the bottom plate 40 can be fixedly installed on a CNC processing platform through the second counter holes 402, an L-shaped fourth negative pressure through hole 404 is arranged on the bottom plate 40, one end of the fourth negative pressure through hole 404 is arranged in the center of the bottom plate 40, the top surface of the fourth negative pressure through hole 404 is consistent with the top surface of the bottom plate 40, the other end of the fourth negative pressure through hole 404 is arranged on one side of the bottom plate 40, a second vacuum suction pipe 41 is fixedly installed on the side of the bottom plate 40, the second vacuum suction pipe 41 is connected with the fourth negative pressure through hole 404 in a threaded mode, the second vacuum suction pipe 41 can be connected with a vacuum negative pressure source on the CNC processing platform, and a third sealing ring groove (not shown in the third sealing ring groove 42) is installed in the fourth negative pressure through hole 403).
Secondly, a first concave negative pressure cavity 304 is arranged in the middle of the bottom surface of the backing plate 30, the circumferential size of the first negative pressure cavity 304 is consistent with that of a second negative pressure cavity 403 on the bottom plate 40, namely, the first negative pressure cavity 304 and the second negative pressure cavity 403 are correspondingly matched, so that the first negative pressure cavity 304 completely covers the second negative pressure cavity 403, 6 first counter sunk holes 301 are arranged on the periphery of the backing plate 30 and at the outer edge of the first negative pressure cavity 304, the 6 first counter sunk holes 301 are matched with 6 threaded holes 401 on the bottom plate 40 one by one, so that the backing plate 30 is fixedly installed on the top surface of the bottom plate 40 through bolts, and sealing between the second negative pressure cavity 403 on the bottom plate 40 and the first negative pressure cavity 304 on the backing plate 30 is realized through a fourth sealing ring 43 on the bottom plate 40.
Meanwhile, a third negative pressure through hole 303 is arranged in the center of the backing plate 30, the bottom surface of the third negative pressure through hole 303 is consistent with the bottom surface of the backing plate 30, when the backing plate 30 is fixedly arranged on the top surface of the bottom plate 40 through bolts, the third negative pressure through hole 303 is communicated with a fourth negative pressure through hole 404 on the bottom plate 40, the third negative pressure through hole 303 on the backing plate 30 is sealed with the fourth negative pressure through hole 404 on the bottom plate 40 through a third sealing ring 42 on the bottom plate 40, namely, the third negative pressure through hole 303 is communicated with the fourth negative pressure through hole 404 but not communicated with the first negative pressure cavity 304 and the second negative pressure cavity 403, a first vacuum suction pipe 35 is fixedly arranged on one side of the backing plate 30, and the first vacuum suction pipe 35 can be communicated with the first negative pressure cavity 304 and can be connected with a vacuum negative pressure source on a CNC processing platform.
The second negative pressure through holes 302 are formed in the middle of the top surface of the backing plate 30, the second negative pressure through holes 302 are arranged in an array and are communicated with the first negative pressure cavity 304, second sealing ring grooves (not shown) are formed in the top surface of the backing plate 30 and in the outer edge of each second negative pressure through hole 302, second sealing rings 34 are mounted in the second sealing ring grooves, first sealing ring grooves (not shown) are formed in the top surface of the backing plate 30 and in the outer edges of all second negative pressure through holes 302, first sealing rings 33 are mounted in the first sealing ring grooves, separation between the second negative pressure through holes 302 can be achieved by the aid of the first sealing rings 33 and the second sealing rings 34, first positioning pin holes and second positioning pin holes (not shown) are formed in the top surface of the backing plate 30 and in the outer edges of all second negative pressure through holes 302, the outer diameters of the first positioning pin holes are larger than the outer diameters of the second positioning pin holes, first positioning pins 31 and second positioning pins 32 are fixedly mounted in the first positioning pin holes and the second positioning pin holes respectively, and the positioning pins 32 can be conveniently located in the directions of the X axis 20 and the Y axis 20 are conveniently achieved.
In other embodiments, to firmly adsorb and support the positioning plate 20 and ensure positioning accuracy of the positioning plate 20 on the Z axis, each second negative pressure through hole 302 may include a plurality of adsorption holes (not labeled in the figure) arranged in an array, i.e. the diameters of the adsorption holes are smaller.
As shown in fig. 2,4, 5 and 6, a first suction through-groove 204 is provided in the middle of the bottom surface of the positioning plate 20, the first suction through-groove 204 is provided alternately and between a plurality of second negative pressure through-holes 302, i.e., the first suction through-groove 204 is provided not to communicate with the second negative pressure through-holes 302, a first negative pressure through-hole 201 is provided in the center of the positioning plate 20, the first negative pressure through-hole 201 is provided to communicate with the first suction through-groove 204, and when the positioning plate 20 is fixedly sucked on the top surface of the backing plate 30, the first negative pressure through-hole 201 can communicate with a third negative pressure through-hole 303 on the backing plate 30 and with the first suction through-groove 204, a first positioning hole 202 and a second positioning hole 203 are provided in the periphery of the bottom surface of the positioning plate 20, the first positioning hole 202 and the second positioning hole 203 are respectively fitted with a first positioning pin 31 and a second positioning pin 32 on the backing plate 30, so that the positioning plate 20 is mounted on the top surface of the backing plate 30 by the first positioning pin 31 and the second positioning pin 32.
In this embodiment, when the vacuum negative pressure source is connected to the first vacuum suction pipe 35 and sucks air, the vacuum negative pressure source can fixedly adsorb the positioning plate 20 on the top surface of the backing plate 30 through the first vacuum suction pipe 35, the first negative pressure cavity 304 and the plurality of second negative pressure through holes 302 in order to position the positioning plate 20 on the Z axis, and meanwhile, the first sealing ring 33 and the plurality of second sealing rings 34 mounted on the backing plate 30 can realize sealing between the plurality of second negative pressure through holes 302, so that the plurality of second negative pressure through holes 302 are not communicated with the first adsorption through grooves 204 and the first negative pressure through holes 201.
Finally, a positioning boss 21 adapted to the CNC workpiece 10 to be processed is disposed at the top of the positioning plate 20, a second adsorption through groove 211 is disposed on the top surface of the positioning boss 21, and the second adsorption through groove 211 is communicated with the first negative pressure through hole 201, that is, the first adsorption through groove 204 and the second adsorption through groove 211 are both communicated with the first negative pressure through hole 201.
In this embodiment, when the CNC workpiece 10 is placed on the top surface of the positioning boss 21, and when the vacuum negative pressure source is connected to the second vacuum suction pipe 41 and suctions air, the vacuum negative pressure source can sequentially pass through the second vacuum suction pipe 41, the fourth negative pressure through hole 404, the third negative pressure through hole 303, the first negative pressure through hole 201 and the second suction through groove 211 to suck and fix the CNC workpiece 10 on the top surface of the positioning plate 20, so as to facilitate CNC processing.
Embodiment two:
As shown in fig. 9, a schematic structural diagram of the positioning plate 20 in the CNC workpiece fixture according to the present embodiment is shown. The CNC workpiece fixing jig in this embodiment is substantially the same as that in the first embodiment, except that the positioning plate 20 is adapted according to the structure of the CNC workpiece 10 to be processed.
Specifically, when the size of the CNC workpiece 10 is smaller and multiple CNC pieces of machining are required, a plurality of positioning bosses 21 adapted to the CNC workpiece 10 to be machined are provided on the top of the positioning plate 20 adapted to the CNC workpiece 10, an adsorption cavity 212 is provided on the top surface of the positioning boss 21, meanwhile, first adsorption through grooves 204 are also provided in the middle of the bottom surface of the positioning plate 20, the first adsorption through grooves 204 are staggered and are located between the plurality of second negative pressure through holes 302, that is, the first adsorption through grooves 204 are not communicated with the second negative pressure through holes 302, and first negative pressure through holes 201 are provided on the positioning plate 20 and in communication with the adsorption cavity 212 and the first adsorption through grooves 204 in the center of the corresponding positioning boss 21.
In this embodiment, when the CNC workpiece 10 is placed on the top surface of the positioning boss 21, and when the vacuum negative pressure source is connected to the second vacuum suction pipe 41 and suctions air, the vacuum negative pressure source can sequentially pass through the second vacuum suction pipe 41, the fourth negative pressure through hole 404, the third negative pressure through hole 303, the first suction through groove 204, the first negative pressure through hole 201 and the suction cavity 212 to suction and fix the CNC workpiece 10 on the top surface of the positioning plate 20, so as to facilitate CNC processing.
In the practical application process, when the model of the CNC machined part 10 is changed, only the locating plate 20 needs to be replaced, and the bottom plate 40 and the base plate 30 do not need to be replaced, so that the recycling and the quick switching of the CNC machining jig are realized, the manufacturing cost of the jig is reduced, and the machining efficiency of products is improved.
On the other hand, the invention also provides a manufacturing method of the CNC workpiece fixing jig, which specifically comprises the following steps:
S1, leveling the machined bottom plate 40, and fixedly mounting the machined bottom plate on a CNC machining platform through bolts.
The middle part of the top surface of the machined bottom plate 40 is provided with a second concave negative pressure cavity 403, the top surface of the bottom plate 40 is provided with a fourth sealing ring groove at the outer edge of the second negative pressure cavity 403, the periphery of the bottom plate 40 is provided with 6 threaded holes 401 and 4 second countersunk holes 402 at the outer edge of the second negative pressure cavity 403, the bottom plate 40 is provided with an L-shaped fourth negative pressure through hole 404, one end of the fourth negative pressure through hole 404 is arranged at the center of the bottom plate 40, the top surface of the fourth negative pressure through hole is consistent with the top surface of the bottom plate 40, the other end of the fourth negative pressure through hole 404 is arranged at one side of the bottom plate 40, a second vacuum suction pipe 41 is fixedly arranged at the side of the bottom plate 40, the second vacuum suction pipe 41 is in threaded connection with the fourth negative pressure through hole 404, and a third sealing ring groove is arranged at the outer edge of one end of the fourth negative pressure through hole 404, which is close to the second negative pressure cavity 403.
It should be noted that, for a biaxial machine or a multiaxial machine, after confirming the distance between the main shafts on the biaxial machine or multiaxial machine, two bottom plates 40 may be correspondingly installed on the biaxial machine, or a plurality of bottom plates 40 may be correspondingly installed on the multiaxial machine, that is, one main shaft on the biaxial machine or multiaxial machine corresponds to one bottom plate 40. The jig corresponding to one spindle is described below.
S2, dividing the bottom plate 40 fixedly installed on the CNC processing platform and corresponding to a certain spindle, setting the origin of the bottom plate 40 and storing the origin.
And S3, respectively installing a third sealing ring 42 and a fourth sealing ring 43 in the third sealing ring groove and the fourth sealing ring groove, and fixedly installing the semi-finished product of the backing plate 30 on the top surface of the bottom plate 40 through bolts.
The middle part of the bottom surface of the base plate semi-finished product is provided with a first concave negative pressure cavity 304, the circumferential size of the first negative pressure cavity 304 is consistent with that of a second negative pressure cavity 403 on the base plate 40, 6 first counter bores 301 are arranged at the periphery of the base plate 30 and at the outer edge of the first negative pressure cavity 304, the 6 first counter bores 301 are in one-to-one correspondence with 6 threaded holes 401 on the base plate 40, so that the base plate 30 is fixedly arranged on the top surface of the base plate 40 through bolts, sealing between the second negative pressure cavity 403 on the base plate 40 and the first negative pressure cavity 304 on the base plate semi-finished product is realized through fourth sealing rings 43 on the base plate 40, meanwhile, a third negative pressure through hole 303 is arranged at the center of the base plate semi-finished product and the bottom surface of the base plate 30 is consistent with that of the base plate, when the base plate semi-finished product is fixedly arranged on the top surface of the base plate 40 through bolts, the third negative pressure through holes are communicated with a fourth negative pressure through holes 404 on the base plate 40, the third negative pressure through holes 303 on the base plate 40 are fixedly arranged on the top surface of the base plate 40 through bolts, the second negative pressure through holes 302 are fixedly arranged on the top surface of the base plate 40 and at the outer edge of the base plate 40, and the second negative pressure cavity 302 is communicated with the second negative pressure cavity 302, and the top surface of the second negative pressure cavity is fixedly arranged on the base plate semi-finished product is provided with the top surface of the base plate semi-finished product, and is provided with a plurality of negative pressure groove.
In other embodiments, to firmly adsorb and support the positioning plate 20 and ensure positioning accuracy of the positioning plate 20 on the Z axis, each second negative pressure through hole 302 may include a plurality of adsorption holes (not labeled in the figure) arranged in an array, i.e. the diameters of the adsorption holes are smaller.
S4, processing a first positioning pin hole and a second positioning pin hole on the top surface of the semi-finished product of the backing plate and at the outer edges of all the second negative pressure through holes 302 to form the backing plate 30 by taking the origin set in the step S2 as a reference, wherein the outer diameter of the first positioning pin hole is larger than that of the second positioning pin hole, then installing the first positioning pin 31 and the second positioning pin 32 in the first positioning pin hole and the second positioning pin hole respectively so as to conveniently identify the direction of the backing plate 30 and realize the positioning of the positioning plate 20 on the X axis and the Y axis, and then installing the first sealing ring 33 and the plurality of second sealing rings 34 in the first sealing ring groove and the second sealing ring groove correspondingly so as to realize the separation among the plurality of second negative pressure through holes 302.
S5, mounting the semi-finished positioning plate on the top surface of the base plate 30 through the first positioning pin 31 and the second positioning pin 32, and connecting the first vacuum suction pipe 35 with a vacuum negative pressure source, so that the vacuum negative pressure source sequentially passes through the first vacuum suction pipe 35, the first negative pressure cavity 304 and the plurality of second negative pressure through holes 302 to fixedly adsorb the semi-finished positioning plate on the top surface of the base plate 30, thereby realizing the positioning of the semi-finished positioning plate on the Z axis, and simultaneously, sealing between the plurality of second negative pressure through holes 302 can be realized through the first sealing ring 33 and the plurality of second sealing rings 34 mounted on the base plate 30, so that the plurality of second negative pressure through holes 302 are not communicated with the first adsorption through grooves 204 and the first negative pressure through holes 201.
Wherein, a first adsorption through groove 204 is pre-processed in the middle of the bottom surface of the positioning plate semi-finished product, the first adsorption through grooves 204 are crisscrossed and arranged among a plurality of second negative pressure through holes 302 and can be communicated with a third negative pressure through hole 303, a first positioning hole 202 and a second positioning hole 203 are arranged on the periphery of the bottom surface of the positioning plate semi-finished product to form a positioning plate 20, and the first positioning hole 202 and the second positioning hole 203 are respectively matched with a first positioning pin 31 and a second positioning pin 32 on a backing plate 30 so as to utilize the first positioning pin 31 and the second positioning pin 32 to install the positioning plate 20 on the top surface of the backing plate 30.
S6, processing at least one first negative pressure through hole 201 and at least one positioning boss 21 on the semi-finished positioning plate by taking the origin set in the step S2 as a reference to form the positioning plate 20, wherein the positioning boss 21 is matched with the CNC machined part 10.
Specifically, when the CNC workpiece 10 is large in size and suitable for CNC monolithic processing, as applied to the CNC workpiece 10 in fig. 1, after the semi-finished positioning plate is fixedly adsorbed on the backing plate 30 by the vacuum negative pressure source, a positioning boss 21 adapted to the CNC workpiece 10 is processed on top of the semi-finished positioning plate, a second adsorption through groove 211 is processed on top of the positioning boss 21, meanwhile, a first negative pressure through hole 201 is processed in the center of the semi-finished positioning plate to form a positioning plate 20, the first negative pressure through hole 201 is communicated with the first adsorption through groove 204 and the second adsorption through groove 211, and when the positioning plate 20 is fixedly adsorbed on the top of the backing plate 30, the first negative pressure through hole 201 can be communicated with a third negative pressure through hole 303 on the backing plate 30. At this time, when the CNC workpiece 10 is placed on the top surface of the positioning boss 21, and when the vacuum negative pressure source is connected to the second vacuum suction pipe 41 and suctions air, the vacuum negative pressure source can sequentially pass through the second vacuum suction pipe 41, the fourth negative pressure through hole 404, the third negative pressure through hole 303, the first negative pressure through hole 201 and the second suction through groove 211 to suck and fix the CNC workpiece 10 on the top surface of the positioning plate 20.
When the size of the workpiece 10 to be CNC is smaller and suitable for CNC multi-piece machining, as applied to the CNC workpiece 10 in fig. 9, after the semi-finished product of the positioning plate is fixedly adsorbed on the backing plate 30 by the vacuum negative pressure source, a plurality of positioning bosses 21 adapted to the CNC workpiece 10 to be machined are machined on the top of the semi-finished product of the positioning plate, an adsorption cavity 212 is machined on the top surface of the positioning boss 21, meanwhile, a first negative pressure through hole 201 is machined on the positioning plate 20 and corresponds to the center of the positioning boss 21, the first negative pressure through hole 201 is communicated with the adsorption cavity 212 and the first adsorption through groove 204, and when the positioning plate 20 is fixedly adsorbed on the top surface of the backing plate 30, the first negative pressure through hole 201 and the first adsorption through groove 204 can be communicated with a third negative pressure through hole 303 on the backing plate 30. At this time, when the CNC workpiece 10 is placed on the top surface of the positioning boss 21, and when the vacuum negative pressure source is connected to the second vacuum suction pipe 41 and suctions air, the vacuum negative pressure source can sequentially pass through the second vacuum suction pipe 41, the fourth negative pressure through hole 404, the third negative pressure through hole 303, the first suction through groove 204, the first negative pressure through hole 201 and the suction chamber 212 to suck and fix the CNC workpiece 10 on the top surface of the positioning plate 20.
Finally, after the fixture for fixing the CNC workpiece is machined, the origin set in the step S2 can be used as a reference to carry out CNC machining on the CNC workpiece 10. It should be noted that, when the same spindle of the same machine is required to be switched to different products, the positioning plate 20 is only required to be replaced, and the bottom plate 40 and the backing plate 30 are not required to be replaced, meanwhile, the CNC machining of different types of CNC machined parts 10 can be simultaneously performed on a biaxial machine or a multiaxial machine, and only the CNC machined part fixing jig corresponding to each spindle needs to be ensured to be based on the origin set in the step S2. In addition, when the first CNC processing of other new products is needed, the matched positioning plate is processed according to the steps S5 and S6.
The CNC workpiece fixing jig provided by the embodiment of the invention not only can realize the recycling and quick switching of the CNC workpiece fixing jig, reduce the manufacturing cost of the jig and improve the processing efficiency of products, but also can realize accurate positioning and switching processing of products of different varieties on different double-shaft machines and multi-shaft machines.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210414724.5A CN114654280B (en) | 2022-04-20 | 2022-04-20 | CNC machining part fixing fixture and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210414724.5A CN114654280B (en) | 2022-04-20 | 2022-04-20 | CNC machining part fixing fixture and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114654280A CN114654280A (en) | 2022-06-24 |
| CN114654280B true CN114654280B (en) | 2025-01-07 |
Family
ID=82035993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210414724.5A Active CN114654280B (en) | 2022-04-20 | 2022-04-20 | CNC machining part fixing fixture and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114654280B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207027067U (en) * | 2017-08-11 | 2018-02-23 | 东莞市专新精密机械科技有限公司 | A kind of universal vacuum cup |
| CN214771446U (en) * | 2020-12-07 | 2021-11-19 | 赣州市同兴达电子科技有限公司 | Quick-change jig for TFT (thin film transistor) processing |
| CN218984014U (en) * | 2022-04-20 | 2023-05-09 | 抚州联创恒泰光电有限公司 | CNC machined part fixing jig |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4302440A1 (en) * | 1993-01-29 | 1994-08-11 | Mielenz Gmbh | Vacuum chuck |
| JP2005032959A (en) * | 2003-07-11 | 2005-02-03 | Nikon Corp | Vacuum chuck, polishing device, exposure device, and method for manufacturing semiconductor device |
| CN205043505U (en) * | 2015-09-09 | 2016-02-24 | 南阳富新特光电科技有限公司 | Flat glass multi -disc processing positioning jig |
| CN105127806A (en) * | 2015-09-15 | 2015-12-09 | 常熟理工学院 | Combined multifunctional vacuum fixture |
| CN106002415A (en) * | 2016-08-03 | 2016-10-12 | 昆山冠品优精密机械有限公司 | Pneumatic clamp |
| CN207414901U (en) * | 2017-11-27 | 2018-05-29 | 成都共同散热器有限公司 | A kind of vacuum fixture of Rapid tooling workpiece |
| CN109277831A (en) * | 2018-11-27 | 2019-01-29 | 鹤山市欧菲特厨卫实业有限公司 | A kind of automatic drilling tapping equipment |
-
2022
- 2022-04-20 CN CN202210414724.5A patent/CN114654280B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207027067U (en) * | 2017-08-11 | 2018-02-23 | 东莞市专新精密机械科技有限公司 | A kind of universal vacuum cup |
| CN214771446U (en) * | 2020-12-07 | 2021-11-19 | 赣州市同兴达电子科技有限公司 | Quick-change jig for TFT (thin film transistor) processing |
| CN218984014U (en) * | 2022-04-20 | 2023-05-09 | 抚州联创恒泰光电有限公司 | CNC machined part fixing jig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114654280A (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205043505U (en) | Flat glass multi -disc processing positioning jig | |
| CN218984014U (en) | CNC machined part fixing jig | |
| CN103084887A (en) | Clamp for machining molded line of scroll plate | |
| CN105817929A (en) | Rotary body case clamp system and use method thereof | |
| CN114654280B (en) | CNC machining part fixing fixture and manufacturing method thereof | |
| CN210209570U (en) | Adsorption jig for machining curved surface of notebook computer shell | |
| CN215035448U (en) | Special vacuum chuck special-shaped tool for bottom plate | |
| CN105628068A (en) | Fixture preventing measurement deviation and manufacturing method thereof | |
| CN206825051U (en) | A kind of sucker suction machining center tool | |
| CN218135253U (en) | Sucker type clamp of numerical control milling machine | |
| CN111168428B (en) | Combined clamp and method for machining small arc centripetal hole | |
| CN207255758U (en) | A four-axis vacuum fixture | |
| CN206066000U (en) | Butterfly support base end fixture for processing | |
| CN104029096B (en) | The magnetic holding device of optical element tip relief processing and clamping method | |
| CN219275685U (en) | Novel vacuum adsorption jig | |
| CN211028956U (en) | Zero-point quick-change positioning and machining device for automobile chassis | |
| CN210147571U (en) | Improved tool for cutting part appearance | |
| CN222520653U (en) | Positioning device for processing various small cover plates | |
| CN102357815B (en) | Numerical control processing method and special processing fixture for inertial platform body | |
| CN219787538U (en) | Milling jig for notebook cover plate | |
| CN220145336U (en) | Milling suction clamping jig | |
| CN213673026U (en) | Rotary vacuum adsorption clamp | |
| CN219379583U (en) | Four-corner positioning mechanism for rapid positioning of clamp | |
| CN206066001U (en) | Butterfly support base fixture for processing | |
| CN219787539U (en) | CNC processing jig |
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 |