CN113001381A - Surface polishing device for 3D printing blank and operation method - Google Patents
Surface polishing device for 3D printing blank and operation method Download PDFInfo
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- CN113001381A CN113001381A CN202110307838.5A CN202110307838A CN113001381A CN 113001381 A CN113001381 A CN 113001381A CN 202110307838 A CN202110307838 A CN 202110307838A CN 113001381 A CN113001381 A CN 113001381A
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- printing
- blank
- polishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/006—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
- B24B49/165—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load for grinding tyres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to the technical field of 3D printing post-processing, and provides a surface polishing device for a 3D printing blank and an operation method, aiming at solving the problems that the manual polishing efficiency is low, the product consistency is poor, and the improvement of the abrasive flow and the magnetic polishing on the surface roughness of the product is limited in the conventional surface processing method for a 3D printing workpiece in the industry, and comprising a control system and a polishing mechanism; grinding machanism installs the protection baffle in work platform upper end both sides including work platform and symmetry, and the fixed arm is installed to one of them protection baffle's upper end, and the other end of fixed arm is connected with built-in extending structure and mechanical transmission system's flexible arm through swivelling joint unit, and the flexible arm is installed to the end of activity, and the other end of flexible arm is equipped with the bistrique mount pad, the detachable bistrique of installing in the bistrique mount pad. The method is particularly suitable for post-processing of the 3D printing core piece in the field of aerospace engines, and has high social use value and application prospect.
Description
Technical Field
The invention relates to the technical field of 3D printing post-processing, in particular to a surface polishing device for a 3D printing blank and an operation method.
Background
With the continuous progress and development of the 3D printing technology, the 3D printing technology can basically meet the forming requirement of the core piece in the field of aerospace engines, the core piece in the field of aerospace engines is generally served under the working condition of high temperature and high pressure, and the structural strength and the heat transfer efficiency of the core piece are directly influenced by the wall thickness and the surface quality. However, the surface quality of the formed workpiece is not uniform, and the surface treatment control of the thin-wall structure has uncertainty, so that the limitation always restricts the further application and development of the 3D printing technology in the field.
At present, the surface treatment method for the 3D printed workpiece in the industry mainly comprises manual polishing, abrasive flow and magnetic polishing, but the manual polishing has low efficiency and poor product consistency, and the improvement of the abrasive flow and the magnetic polishing on the surface roughness of the product is limited. Therefore, the surface polishing device for the 3D printing blank and the operation method are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a surface polishing device for a 3D printing blank and an operation method, overcomes the defects of the prior art, has reasonable design and compact structure, and aims to solve the problems of low manual polishing efficiency, poor product consistency and limited improvement of the surface roughness of the product by abrasive particle flow and magnetic polishing in the prior art for the surface treatment method of the 3D printing workpiece.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a surface polishing device for a 3D printing blank comprises a control system and a grinding mechanism;
the grinding mechanism comprises a working platform and protective partition plates symmetrically arranged on two sides of the upper end of the working platform, a fixed arm is arranged at the upper end of one protective partition plate, the other end of the fixed arm is connected with a movable telescopic arm with a built-in telescopic structure and a mechanical transmission system through a rotary connection unit, the tail end of the movable telescopic arm is provided with a movable arm, the other end of the movable arm is provided with a grinding head mounting seat, and a grinding head is detachably arranged in the grinding head mounting seat;
the fixed arm is also connected with the output end of an air compressor through a high-pressure air pipe I, and the middle part of the fixed arm is provided with an air flow channel which penetrates through the movable telescopic arm and the movable arm and realizes high-speed rotation of the grinding head.
Preferably, still including the positioning mechanism who is used for fixed 3D to print the blank, and positioning mechanism sets up in work platform up end middle part, and positioning mechanism realizes rotatory blank mount pad including setting up in work platform up end middle part and accessible pneumatic drive, and the upper end of blank mount pad is equipped with the clamping frock that is used for fixed 3D to print the blank, and the blank mount pad passes through high-pressurepipe II and is connected with the output through-going of air compressor machine.
Preferably, the control system comprises a computer, a data processor and a main control box, the computer is connected with the data processor through a signal input line, the data processor is connected with the fixing arm through a signal output line, and the main control box is respectively connected with the fixing arm and the clamping tool through cables.
Preferably, a PLC control system used for realizing linkage of the rotary connecting unit, the movable telescopic arm and the movable arm is arranged in the fixed arm.
Preferably, the PLC control system is also used for controlling the starting, stopping and rotating speed of the pneumatic rotation of the grinding head.
Preferably, an observation window for monitoring the printing condition is embedded in the protective partition plate close to one side of the fixed arm.
Preferably, the clamping tool is assembled at the upper end of the blank mounting seat through a high-strength bolt.
The invention also provides an operation method of the 3D printing workpiece surface polishing device, which comprises the following steps:
s1, fixing the 3D printing blank on a blank mounting seat through a clamping tool;
s2, importing the three-dimensional digital-to-analog of the 3D printing blank into a computer, selecting a part to be polished on the three-dimensional digital-to-analog, and transmitting information to a PLC control system after data conversion is carried out by a data processor;
s3, setting a polishing index by the main control box, transmitting information to the PLC control system according to set data, and enabling the linkage system to be linked according to a program set track to realize polishing of the 3D printing blank;
the polishing coefficient calculation formula is shown in formula 1,
Wa=Fm/(σb·S) (1)
in the formula: wa-polishing index; fm-contact pressure; the room-temperature tensile strength of the sigma b-3D printing blank material; and the contact pressure of the S-grinding head and the 3D printing blank.
Preferably, in step S3, according to the usage requirement of the 3D printed workpiece, the polishing index may be adjusted to uniformly polish the surface of the workpiece, and different polishing index designs may also be performed in a local area of the same 3D printed workpiece, so as to meet the customized polishing requirement.
(III) advantageous effects
The embodiment of the invention provides a surface polishing device for a 3D printing blank and an operation method, and the device has the following beneficial effects:
1. the invention not only solves the problems of low manual polishing efficiency and poor product consistency, but also realizes the controllability and adjustability of the surface roughness of the 3D printing blank by adopting a digital control system, powerfully promotes the development of the 3D printing post-processing technology, and greatly improves the final finished product quality of the 3D printing core piece in the field of aerospace engines.
2. According to the automatic polishing machine, an automatic control system is adopted, high-efficiency polishing can be achieved, meanwhile, the blank clamping tool is assembled with the blank mounting seat through the special high-strength bolt, and quick replacement and polishing of different workpieces can be achieved.
3. The invention can achieve the high consistency of the polishing quality of the same 3D printing workpiece and has good practicability for surface polishing of batch anisotropic thin-wall structure products.
4. The invention achieves the high consistency of the polishing quality of the same 3D printing workpiece, has good practicability on the surface polishing of batch products with different-shaped thin-wall structures, and can realize the quick replacement and high-efficiency polishing of different workpieces by combining the operation method.
Drawings
The above features, technical features, advantages and implementations of a 3D printing blank surface finishing apparatus and method of operation will be further described in the following detailed description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: the device comprises a computer 1, a data processor 2, a signal input line 3, a signal output line 4, a polishing mechanism, a fixed arm 5, a rotary connecting unit 6, a movable telescopic arm 7, a movable arm 8, an observation window 9, a grinding head mounting seat 10, a grinding head 11, a high-pressure air pipe I12, a 3D printing blank piece 13, a protective partition plate 14, a positioning mechanism, a clamping tool 15, a blank piece mounting seat 16, a working platform 17, a high-pressure air pipe II 18, an air compressor 19, a cable 20, a main control box 21 and a high-strength bolt 22.
Detailed Description
The invention will be further illustrated with reference to the accompanying figure 1 and examples:
example 1
A surface polishing device for a 3D printing blank comprises a control system and a grinding mechanism;
the grinding mechanism comprises a working platform 17 and protective partition plates 14 symmetrically arranged on two sides of the upper end of the working platform 17, a fixed arm 5 is arranged at the upper end of one protective partition plate 14, the other end of the fixed arm 5 is connected with a movable telescopic arm 7 with a built-in telescopic structure and a mechanical transmission system through a rotary connection unit 6, a movable arm 8 is arranged at the tail end of the movable telescopic arm 7, a grinding head mounting seat 10 is arranged at the other end of the movable arm 8, and a grinding head 11 is detachably arranged in the grinding head mounting seat 10; an observation window 9 for monitoring the printing condition is embedded in the protective partition plate 14 close to one side of the fixed arm 5;
the fixed arm 5 is also connected with the output end of an air compressor 19 through a high-pressure air pipe I12, and the middle part of the fixed arm 5 is provided with an air flow channel which penetrates through the movable telescopic arm 7 and the movable arm 8 and realizes the high-speed rotation of the grinding head 11;
a PLC control system for realizing the linkage of the rotary connecting unit 6, the movable telescopic arm 7 and the movable arm 8 is arranged in the fixed arm 5; the PLC control system is also used for controlling the starting, stopping and rotating speed of the pneumatic rotation of the grinding head 11.
In the embodiment, the device further comprises a positioning mechanism for fixing the 3D printing blank piece 13, the positioning mechanism is arranged in the middle of the upper end face of the working platform 17, the positioning mechanism comprises a blank piece mounting seat 16 which is arranged in the middle of the upper end face of the working platform 17 and can rotate through pneumatic driving, a clamping tool 15 for fixing the 3D printing blank piece 13 is arranged at the upper end of the blank piece mounting seat 16, and the blank piece mounting seat 16 is in through connection with the output end of the air compressor 19 through a high-pressure air pipe II 18; the clamping tool 15 is assembled at the upper end of the blank mounting seat 16 through a high-strength bolt 22.
In this embodiment, the control system includes computer 1, data processor 2 and main control box 21, and computer 1 is connected with data processor 2 through signal input line 3, and data processor 2 is connected with fixed arm 5 through signal output line 4, and main control box 21 is connected with fixed arm 5 and clamping frock 15 respectively through cable 20.
Example 2
The invention also provides an operation method of the 3D printing workpiece surface polishing device, which comprises the following steps:
s1, fixing the 3D printing blank 13 on the blank mounting seat 16 through the clamping tool 15;
s2, importing the three-dimensional digital-to-analog of the 3D printing blank 13 into the computer 1, selecting a part to be polished on the three-dimensional digital-to-analog, and transmitting information to a PLC control system after data conversion is carried out by the data processor 2;
s3, setting a polishing index by the main control box 21, transmitting information to the PLC control system according to the set data, and enabling the linkage system to carry out linkage according to a program set track to realize polishing of the 3D printing blank 13;
the polishing coefficient calculation formula is shown in formula 1,
Wa=Fm/(σb·S) (1)
in the formula: wa-polishing index; fm-contact pressure; the room-temperature tensile strength of the sigma b-3D printing blank material; and the contact pressure of the S-grinding head and the 3D printing blank.
In this embodiment, in step S3, according to the usage requirement of the 3D printed workpiece, the polishing index may be adjusted to uniformly polish the surface of the workpiece, and different polishing index designs may also be performed in a local area of the same 3D printed workpiece, so as to meet the customized polishing requirement.
Other undescribed structures refer to example 1.
According to the surface polishing device and the operation method of the 3D printing blank piece of the embodiment 1-2, the 3D printing blank piece 13 is installed on the blank piece installation seat 16 through the clamping tool 15, the main control box 21 is started, and the main control box 21 is matched with the input of the PLC control system start-stop air compressor 19, so that the rotating speed of the grinding head 11 can be adjusted;
the method comprises the steps of (1) importing an equal-proportion three-dimensional digital-analog of a 3D printing blank piece 13 into a computer 1, selecting a part to be polished, carrying out data processing through a data processor 2, and transmitting information to a PLC control system to polish the 3D printing blank piece 13;
the clamping tool 15 is connected with the blank mounting seat 16 in a matched mode through the high-strength bolts 22, the 3D printing blanks 13 are easy to replace, maintenance is convenient, and polishing treatment of the 3D printing blanks 13 of various types and styles is facilitated;
meanwhile, the invention adopts a digital control system, can accurately control the surface roughness of the 3D printing blank piece 13 by adjusting different polishing coefficients, can achieve the high consistency of the polishing quality of the same 3D printing workpiece, has good practicability for the surface polishing of mass anisotropic thin-wall structure products, and can realize the quick replacement and high-efficiency polishing of different workpieces by combining with an operation method.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (9)
1. The surface polishing device for the 3D printing blank is characterized by comprising a control system and a polishing mechanism;
the grinding mechanism comprises a working platform (17) and protective partition plates (14) symmetrically arranged on two sides of the upper end of the working platform (17), a fixed arm (5) is arranged at the upper end of one protective partition plate (14), the other end of the fixed arm (5) is connected with a movable telescopic arm (7) with a built-in telescopic structure and a mechanical transmission system through a rotary connection unit (6), a movable arm (8) is arranged at the tail end of the movable telescopic arm (7), a grinding head mounting seat (10) is arranged at the other end of the movable arm (8), and a grinding head (11) is detachably arranged in the grinding head mounting seat (10);
the fixed arm (5) is also connected with the output end of an air compressor (19) through a high-pressure air pipe I (12), and the middle part of the fixed arm (5) is provided with an air flow channel which penetrates through the movable telescopic arm (7) and the movable arm (8) and realizes the high-speed rotation of the grinding head (11).
2. The surface polishing apparatus for 3D printing blanks as recited in claim 1, wherein: still including the positioning mechanism who is used for fixed 3D to print blank (13), and positioning mechanism sets up in work platform (17) up end middle part, positioning mechanism realizes rotatory blank mount pad (16) including setting up in work platform (17) up end middle part and accessible pneumatic drive, and the upper end of blank mount pad (16) is equipped with clamping frock (15) that are used for fixed 3D to print blank (13), blank mount pad (16) are through the output through connection of high-pressurepipe II (18) and air compressor machine (19).
3. The surface polishing apparatus for 3D printing blanks as recited in claim 1, wherein: control system includes computer (1), data processor (2) and main control box (21), and computer (1) is connected with data processor (2) through signal input line (3), and data processor (2) are connected with fixed arm (5) through signal output line (4), and main control box (21) are connected with fixed arm (5) and clamping frock (15) respectively through cable (20).
4. The surface polishing apparatus for 3D printing blanks as recited in claim 1, wherein: and a PLC control system for realizing linkage of the rotary connecting unit (6), the movable telescopic arm (7) and the movable arm (8) is arranged in the fixed arm (5).
5. The surface polishing apparatus for 3D printing blanks as recited in claim 4, wherein: the PLC control system is also used for controlling the starting, stopping and rotating speed of the pneumatic rotation of the grinding head (11).
6. The surface polishing apparatus for 3D printing blanks as recited in claim 1, wherein: an observation window (9) used for monitoring the printing condition is embedded in the protective partition plate (14) close to one side of the fixed arm (5).
7. The surface polishing apparatus for 3D printing blanks as recited in claim 1, wherein: and the clamping tool (15) is assembled at the upper end of the blank mounting seat (16) through a high-strength bolt (22).
8. An operating method of the 3D printing workpiece surface polishing device according to any one of claims 1 to 7, characterized by comprising the following steps:
s1, fixing the 3D printing blank (13) on a blank mounting seat (16) through a clamping tool (15);
s2, importing a three-dimensional digital-to-analog of the 3D printing blank (13) into the computer (1), selecting a part to be polished on the three-dimensional digital-to-analog, and transmitting information to the PLC control system after data conversion is carried out by the data processor (2);
s3, setting a polishing index by the main control box (21), transmitting information to the PLC control system according to set data, and enabling the linkage system to carry out linkage according to a program set track to realize polishing of the 3D printing blank (13);
the polishing coefficient calculation formula is shown in formula 1,
Wa=Fm/(σb·S) (1)
in the formula: wa-polishing index; fm-contact pressure; the room-temperature tensile strength of the sigma b-3D printing blank material; and the contact pressure of the S-grinding head and the 3D printing blank.
9. The method of operating a 3D printed workpiece surface finishing apparatus of claim 8, wherein: in the step S3, according to the usage requirement of the 3D printed workpiece, the polishing index can be adjusted to uniformly polish the surface of the workpiece, and different polishing index designs can be performed in a local area of the same 3D printed workpiece, so as to meet the customized polishing requirement.
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Cited By (1)
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CN113369498A (en) * | 2021-08-10 | 2021-09-10 | 陕西斯瑞新材料股份有限公司 | Surface post-treatment method for 3D printing copper alloy contact material |
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