CN112475292A - Universal linear cutting clamp for selective laser melting forming part - Google Patents
Universal linear cutting clamp for selective laser melting forming part Download PDFInfo
- Publication number
- CN112475292A CN112475292A CN202011151482.2A CN202011151482A CN112475292A CN 112475292 A CN112475292 A CN 112475292A CN 202011151482 A CN202011151482 A CN 202011151482A CN 112475292 A CN112475292 A CN 112475292A
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- Prior art keywords
- mounting
- mounting hole
- hole
- central
- substrate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H5/00—Combined machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The utility model provides a separation between forming piece and base plate is stably realized to selective melting forming piece line-cut anchor clamps of laser of universality belongs to the processing equipment field with high efficiency. The whole set of fixture comprises a mounting plate, a rotating base and a support, wherein the mounting plate is provided with four mounting grooves and a first central mounting hole, the mounting grooves are used for connecting the substrate, and the first central mounting hole is used for connecting the rotating base; the rotating base comprises a second central mounting hole and four threaded mounting holes, the second central mounting hole of the rotating base is used for being rotatably positioned after being connected with the mounting plate, and the threaded mounting holes are connected with the upper part of the bracket; the support comprises an upper mounting hole and a lower mounting hole, the upper mounting hole is connected with the rotating base, and the lower mounting hole is connected with the mounting platform of the wire cutting machine and used for fixing the wire cutting clamp. The design can meet the requirements of stability and efficiency of linear cutting work while ensuring the safety and universality of linear cutting.
Description
Technical Field
The invention belongs to the field of processing equipment, and particularly relates to a universal linear cutting clamp for a selective laser melting forming piece.
Background
The selective laser melting technology is one of the most promising 3D printing technologies, based on a pre-designed part model, model slices are layered by adopting special software, metal powder is uniformly laid on a substrate by high-energy laser beams through selective scanning layer by layer, the metal powder is heated, melted and rapidly solidified, and a formed part is obtained by stacking layer by layer. Because the temperature is high in the selective laser melting and forming process, metal powder is completely melted, so that a formed part and a substrate form metallurgical bonding, and parts are usually cut from the substrate by adopting a wire cut electrical discharge machine. In the wire cutting process, the substrate is often vertically placed on a wire cutting platform, the relative position of the molybdenum wire and the substrate of the wire cutting machine is adjusted, and then the wire cutting is performed.
In the actual selective laser melting forming piece linear cutting process, some operation problems often exist. Firstly, because the side area of the substrate is small, the substrate vertically placed on the platform of the wire cutting machine is often unstable, and when the forming piece has large mass, the forming piece is easy to topple, so that the molybdenum wire is broken, and the safety and the efficiency of wire cutting are affected.
Secondly, when a part having a large size or a large size in a certain direction is formed, a large internal stress is generated between the formed part and the substrate due to the constraint between the two parts. In the process of wire cutting, the formed part is separated from the substrate, the internal stress is released, but the problems of the formed part, such as cracking from the substrate, warping of the substrate and the like can be caused, so that the molybdenum wire is contacted with the substrate or the formed part, the wire cutting process is interrupted or the molybdenum wire is broken, the continuity of wire cutting is seriously affected, a larger step-shaped appearance is often generated on the cutting surface of the formed part when wire cutting is performed again, and the difficulty of subsequent processing is increased.
In addition, considering the stability of powder spreading in the selective laser melting process and the abrasion of the powder spreading process to the scraper, the formed piece is usually placed by rotating a certain angle along the plane of the substrate according to the shape of the formed piece, but in the subsequent linear cutting process, the substrate can only be placed on the platform by depending on four side surfaces of the substrate, so that the linear cutting direction is limited (only four), the cutting time is prolonged, and the cutting efficiency is reduced. And when a plurality of formed parts with large area difference are cut on the wire, the molybdenum wire is easy to loosen and break.
Finally, the sizes of the substrates adopted by the common selective laser melting equipment and the distribution positions of the mounting holes on the substrates are different, the conventional linear cutting clamp suitable for the selective laser melting forming piece is only suitable for the substrates with specific specification and size, the rotatable angle of the substrates is limited during linear cutting, and the universality of the linear cutting clamp is influenced.
Disclosure of Invention
The invention provides a universal linear cutting clamp for a selective laser melting forming piece, which aims to solve the problems in the prior art. The substrate fixing device is suitable for fixing substrates of various common specifications and sizes, effectively solves the problems of substrate shaking, warping deformation and the like in the linear cutting process, ensures the continuity of the linear cutting process, can freely rotate along the plane of a forming part according to the shape and distribution of the forming part to obtain any required linear cutting direction, and improves the efficiency and stability of the linear cutting process of the forming part selected by laser.
The purpose of the invention is realized by the following technical scheme: a universal linear cutting clamp for selective laser melting forming parts comprises a mounting plate, a rotary base and a support; mounting the bracket to a wire cutting machine mounting platform by a lower mounting bolt passing through the lower mounting hole; mounting the swivel base to the bracket by an upper mounting bolt passing through the upper mounting hole and the corresponding threaded mounting hole; the rotary base is connected with the mounting plate through a positioning bolt and a large nut which penetrate through the first central mounting hole and the second central mounting hole; the mounting plate is connected with the base plate through an inner hexagon bolt, a gasket and a small nut which penetrate through the mounting hole of the base plate and the mounting groove; and in consideration of the stability and efficiency of the linear cutting process, loosening the positioning bolts according to the shape and distribution of the formed part on the substrate, rotating the mounting plate and the substrate integrally for a certain angle, tightening the positioning bolts, further obtaining the required linear cutting direction of the molybdenum wire on the formed part, and adjusting the position of the molybdenum wire of the linear cutting machine to start the linear cutting of the formed part.
Preferably, the size of the mounting plate and the distribution and size of the mounting grooves are designed according to the distribution and size of the mounting holes of the substrate of the common selective laser melting equipment, if the mounting holes of the substrate to be mounted are in square distribution, the substrate can be connected to the mounting plate through four hexagon socket head cap screws, and if the mounting holes of the substrate to be mounted are not in square distribution, the two hexagon socket head cap screws can penetrate through the two mounting holes on the diagonal of the substrate to connect the mounting plate to the mounting grooves on the two diagonals of the mounting plate.
Furthermore, the width of the mounting groove on the mounting plate is larger than the diameter of a common substrate mounting hole, so that the hexagon socket head cap screw can smoothly pass through the mounting groove and the connection is firm.
Further, first central mounting hole on the mounting panel is located mounting panel face geometric centre position, and on its axis direction, the cross section divide into hexagon and circular two sections, first central mounting hole, its transversal hexagonal hole portion of personally submitting, hexagon length of side and hole depth all with positioning bolt head size is equivalent, transversal circular hole portion of personally submitting, the round hole diameter with the positioning bolt external diameter is equivalent, and guarantees that positioning bolt head is whole can insert the mounting panel completely in, can not rotate relatively with the mounting panel.
Preferably, the length of the hexagon socket head cap screw is ensured to be firmly installed with the small nut, and the hexagon socket head cap screw, the gasket and the small nut do not interfere with the support when the installation plate is rotationally positioned.
Furthermore, the diameter of the second central mounting hole on the rotating base is equal to that of the first mounting hole.
Furthermore, the outer diameter of the threaded mounting hole on the rotary base is equal to the aperture of the upper mounting hole on the support, and the threaded mounting hole is distributed correspondingly, so that the rotary base can be smoothly and firmly mounted on the support.
Preferably, the lower mounting holes of the bracket are the same as the mounting holes on the mounting platform of the wire cutting machine in diameter and are distributed correspondingly, so that the bracket can be smoothly and firmly mounted on the mounting platform of the wire cutting machine.
Furthermore, the support adopts Q345 high strength angle steel splice welding to form, the mounting panel with rotating base all adopts 45# steel sheet processing to form, has that structural strength is big and durable advantage.
Furthermore, in the process of installing the wire cutting jig, the installation sequence is that the bracket is installed on the installation platform of the wire cutting machine, the rotating base is installed on the bracket, the installation plate is connected with the rotating base, and finally the substrate is installed on the installation plate.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the design of the mounting groove on the mounting plate enables the clamp to have strong universality, is suitable for mounting common substrates with different specifications and sizes, solves the problem that a linear cutting clamp for a selective laser melting forming piece is only suitable for specific equipment, and enables the clamp to be wide in application range.
2. The invention can stably and firmly install the substrate on the clamp, avoid the problems of interruption, safety and the like of the linear cutting process of a formed part caused by substrate shaking and substrate deformation, and ensure the stability and efficiency of the linear cutting process.
3. The invention can rotate the substrate at any angle to perform linear cutting according to the shape and distribution of the formed pieces on the substrate in the linear cutting process of the formed pieces, improves the linear cutting efficiency of the formed pieces, increases the design and placement freedom of the formed pieces on the substrate before selective laser melting, and finally reduces the difficulty of post-treatment of the formed pieces melted in the selective laser melting.
Drawings
FIG. 1 is a front view of the present wire cutting fixture assembly;
FIG. 2 is a rear view of the wire cutting fixture assembly;
FIG. 3 is a schematic view of the backside structure of the wire cutting jig;
FIG. 4 is a schematic structural diagram of the front side of the substrate of the wire-cutting jig rotating 45 ° clockwise;
fig. 5 is a front view of the present wire cutting jig mounting plate 1.
In the figure, 1, mounting plate; 11. mounting grooves; 12. a first central mounting hole; 13. positioning the bolt; 14. a gasket; 15. a small nut; 16. a hexagon socket head cap screw; 2. rotating the base; 21. a second central mounting hole; 22. a large nut; 23. a threaded mounting hole; 3. a support; 31. installing a bolt; 32. an upper mounting hole; 33. a lower mounting bolt; 34. a lower mounting hole; 4. a wire cutting machine mounting platform; 5. a substrate; 51. a substrate mounting hole; 52. a forming member; 6. molybdenum wire; 61. and a roller.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Example one
As shown in fig. 1, 2 and 3, the bracket 3 is firstly mounted on the wire cutting machine mounting platform 4 through the lower mounting bolt 33 passing through the lower mounting hole 34, and then the rotating base 2 is mounted on the bracket 3 through the upper mounting bolt 31 passing through the upper mounting hole 32 and the threaded mounting hole 23, so that the bracket 3 is firmly connected with the wire cutting machine mounting platform 4 and the rotating base 2; then inserting the positioning bolt 13 into the first central mounting hole 12 and the second central mounting hole 21, enabling the head of the positioning bolt 13 to completely enter the mounting plate 1, connecting the mounting plate 1 and the rotating base 2 through the positioning bolt 13 and the large nut 22, and screwing the large nut 22; then, the inner hexagon bolts 16 penetrate through the substrate mounting holes 51 and the mounting grooves 11, and the substrate 5 is mounted on the mounting plate 1 through the gaskets 14 and the small nuts 15 to ensure the firm connection; the large nut 22 is unscrewed, the shape and distribution of the forming piece 52 on the substrate 5 are observed, the substrate 5 and the mounting plate 1 are integrally rotated along the plane of the substrate 5 and the mounting plate 1 to obtain the required linear cutting direction, so that the stability and efficiency requirements of the linear cutting process are met, and then the large nut 22 is screwed down, so that the substrate 5 and the mounting plate 1 are firmly connected with the rotating base 2 in the linear cutting process without relative rotation.
And moving the molybdenum wire 6 of the wire cutting machine to the position to be cut of the forming piece 52 of the substrate 5, and adjusting the position of the molybdenum wire 6 of the wire cutting machine to start wire cutting.
Further, if the substrate mounting holes 51 are distributed in a square shape, the substrate 5 is mounted on the mounting plate 1 by passing the four hexagon socket head cap screws 16 through the substrate mounting holes 51 and the mounting grooves 11, and if the substrate mounting holes 51 are not distributed in a square shape, the substrate 5 is mounted on the mounting plate 1 by passing the two hexagon socket head cap screws 16 through the two diagonal mounting holes 51 on the substrate 5 and the two diagonal mounting grooves 11 on the mounting plate 1.
Example two
Referring to the mounting method of the first embodiment, as shown in fig. 4, the wire saw mounting platform 4, the bracket 3, the rotary base 2, the mounting plate 1, and the substrate 5 are mounted together in this manner. Observing the shape and distribution of the forming part 52, it is obtained that the forming part 52 has a large size along the diagonal direction of the substrate 5, in order to improve the stability and efficiency of the linear cutting process, firstly unscrewing the large nut 22, rotating the substrate 5 and the mounting plate 1 integrally by 45 degrees clockwise according to the angle of the left view of fig. 4 to obtain the required linear cutting direction, and then screwing the large nut 22, so that the substrate 5 and the mounting plate 1 are firmly connected with the rotating base 2 in the linear cutting process, and relative rotation does not occur.
And moving the molybdenum wire 6 of the wire cutting machine to the position to be cut of the forming piece 52 of the substrate 5, and adjusting the position of the molybdenum wire 6 of the wire cutting machine to start wire cutting.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A universal linear cutting clamp for selective laser melting forming piece is characterized by comprising:
the mounting plate is provided with a square plate surface, the mounting plate comprises four mounting grooves which are symmetrically distributed and are positioned on a diagonal line of the square plate and a first central mounting hole positioned at the geometric center of the plate surface of the mounting plate, the cross section of the first central mounting hole is divided into a hexagon section and a round section along the axial direction of the first central mounting hole, the cross section of the first central mounting hole is a hexagonal hole part, the side length and the hole depth of the hexagon section are equal to the size of the head part of the positioning bolt, the cross section of the first central mounting hole is a round hole part, the diameter of the round hole is equal to the outer diameter of the positioning bolt, and the whole head part of the positioning bolt can be completely inserted;
the rotary base comprises a second central mounting hole and four threaded mounting holes, wherein the second central mounting hole is positioned in the geometric center of the surface of the rotary base, the cross section of the second central mounting hole is circular, the four threaded mounting holes are symmetrically distributed on the surface of the rotary base, and the aperture of the second central mounting hole is equal to that of the hole part, the transverse section of the first central mounting hole is circular, in the axial direction;
the support comprises an upper mounting hole and a lower mounting hole, the upper mounting hole corresponds to the threaded mounting hole of the rotating base and is used for mounting the rotating base on the support, and the lower mounting hole is used for mounting the support on a mounting platform of the wire cutting machine;
the substrate is mounted to the mounting plate.
2. A wire cutting jig according to claim 1, which is installed in the order: firstly, the bracket is arranged on a mounting platform of the wire cutting machine through the lower mounting bolt which passes through the lower mounting hole; then mounting the rotating base to the bracket by the upper mounting bolt passing through the upper mounting hole and the corresponding threaded mounting hole; connecting the rotary base and the mounting plate through a positioning bolt and a large nut which penetrate through the first central mounting hole and the second central mounting hole; and finally, connecting the mounting plate and the substrate with the hexagon socket head cap screw, the gasket and the small nut of the mounting groove by penetrating through the substrate mounting hole.
3. A wire cutting jig according to claim 1, wherein: the support adopts Q345 high strength angle steel concatenation welding to form, the mounting panel with rotating base all adopts 45# steel sheet processing to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151482.2A CN112475292A (en) | 2020-10-25 | 2020-10-25 | Universal linear cutting clamp for selective laser melting forming part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151482.2A CN112475292A (en) | 2020-10-25 | 2020-10-25 | Universal linear cutting clamp for selective laser melting forming part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112475292A true CN112475292A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011151482.2A Pending CN112475292A (en) | 2020-10-25 | 2020-10-25 | Universal linear cutting clamp for selective laser melting forming part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112475292A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201455691U (en) * | 2009-07-07 | 2010-05-12 | 北京科技大学 | Fast-assembling and graduating function-based wire-electrode cutting combined fixture |
| EP3072623A1 (en) * | 2015-03-23 | 2016-09-28 | Fanuc Corporation | Workpiece fixing jig used in wire electric discharge machine |
| CN108380876A (en) * | 2018-03-22 | 2018-08-10 | 昆明理工大学 | A kind of combined laser selective melting metal 3D printing substrate |
| CN109079138A (en) * | 2018-09-30 | 2018-12-25 | 长沙新材料产业研究院有限公司 | Substrate and repeated using method are reused in a kind of increasing material manufacturing |
| CN110465712A (en) * | 2019-08-16 | 2019-11-19 | 飞而康快速制造科技有限责任公司 | Linear cutting clamp and wire cutting machine |
| CN211564509U (en) * | 2019-12-31 | 2020-09-25 | 西安铂力特增材技术股份有限公司 | Base material fastening device of selective laser melting forming equipment |
-
2020
- 2020-10-25 CN CN202011151482.2A patent/CN112475292A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201455691U (en) * | 2009-07-07 | 2010-05-12 | 北京科技大学 | Fast-assembling and graduating function-based wire-electrode cutting combined fixture |
| EP3072623A1 (en) * | 2015-03-23 | 2016-09-28 | Fanuc Corporation | Workpiece fixing jig used in wire electric discharge machine |
| CN108380876A (en) * | 2018-03-22 | 2018-08-10 | 昆明理工大学 | A kind of combined laser selective melting metal 3D printing substrate |
| CN109079138A (en) * | 2018-09-30 | 2018-12-25 | 长沙新材料产业研究院有限公司 | Substrate and repeated using method are reused in a kind of increasing material manufacturing |
| CN110465712A (en) * | 2019-08-16 | 2019-11-19 | 飞而康快速制造科技有限责任公司 | Linear cutting clamp and wire cutting machine |
| CN211564509U (en) * | 2019-12-31 | 2020-09-25 | 西安铂力特增材技术股份有限公司 | Base material fastening device of selective laser melting forming equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210312 |
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| RJ01 | Rejection of invention patent application after publication |