CN112318233A - Grinding device and polishing process for 3D printing elongated hole - Google Patents
Grinding device and polishing process for 3D printing elongated hole Download PDFInfo
- Publication number
- CN112318233A CN112318233A CN202010940935.3A CN202010940935A CN112318233A CN 112318233 A CN112318233 A CN 112318233A CN 202010940935 A CN202010940935 A CN 202010940935A CN 112318233 A CN112318233 A CN 112318233A
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- magnetic pole
- elongated hole
- printing
- diamond
- wire
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
- B24B5/485—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies using grinding wires or ropes
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
- B24B5/355—Feeding means
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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
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a grinding device and a polishing process for 3D printing of elongated holes, wherein the grinding device comprises: the device comprises a frame, a driving motor, a reciprocating mechanism, a carborundum wire, an adsorption magnetic pole and a clamping mechanism; the driving motor is fixed on the frame; the 3D printing forming part is connected with an output shaft of the driving motor; more than two diamond wires form a diamond wire harness, one end of the diamond wire harness extends into the slender hole, and the other end of the diamond wire harness is installed on the reciprocating mechanism through the clamping mechanism; the adsorption magnetic pole is fixed on the reciprocating mechanism; the diamond wire is attached to the inner surface of the elongated hole under the attraction of the adsorption magnetic pole, and when the elongated hole rotates along with the driving motor, the diamond wire scratches and rubs the inner surface of the elongated hole to grind and polish the inner surface of the elongated hole; the invention can carry out polishing processing of grinding and polishing on the elongated holes formed by 3D printing.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to a grinding device and a polishing process for 3D printing of elongated holes.
Background
The 3D printing technique is an additive manufacturing technique, i.e., rapid prototyping. It is based on digital model file, and uses special wax material, powdered metal or plastic etc. adhesive material to print layer by layer to make three-dimensional object. With the rapid development of scientific technology, 3D printing has been widely used in the fields of industrial modeling, mechanical manufacturing, aerospace, military and the like. And because it saves the material, improves the material utilization ratio, has reduced the cost by abandoning the production line, can accomplish very high precision and complexity, its application will expand constantly. However, because the layered manufacturing has a step effect, although each layer is very thin, under a certain microscopic scale, a certain thickness is formed, a hard substance is generated on the surface, and when the layered manufacturing is applied to the ultra-precise field, the layered manufacturing must be finished.
Polishing is a common and important processing method in industrial production, and particularly requires the final precision machining for precision parts. The quality of finishing directly affects the surface quality, flatness and performance of the elongated holes. The currently common part polishing methods are mainly divided into two types: firstly, polishing by using a milling machine, and secondly, manually polishing. The quality of the polished plane of the milling machine mainly depends on the milling cutter, the polishing cost is very high, the polishing of the surface of a complex part is greatly limited, and the polishing machine cannot be widely applied in many fields; although the cost can be greatly reduced by manual polishing, the flatness of the polishing cannot be guaranteed. However, for a metal 3D printed product with high hardness and spherical accumulated surface particles, the polishing cannot be carried out in the above modes.
Disclosure of Invention
In view of this, the invention provides a grinding device and a polishing process for 3D printing of elongated holes, which can perform finishing processing of grinding and polishing on the elongated holes formed by 3D printing.
The invention is realized by the following technical scheme:
a grinder for 3D printing elongated holes, comprising: the device comprises a frame, a driving motor, a reciprocating mechanism, a carborundum wire, an adsorption magnetic pole and a clamping mechanism;
the structure to be ground and polished is a long and thin hole in the 3D printing forming part;
the driving motor is fixed on the frame; the 3D printing forming part is connected with an output shaft of a driving motor, and the central line of a slender hole in the 3D printing forming part is superposed with the axis of the output shaft of the driving motor; the driving motor is used for driving the 3D printing forming part to rotate around the central line of the elongated hole;
the diamond sand wire consists of a steel wire and diamond plated on the outer surface of the steel wire, and the outer surface of the diamond sand wire is coated with water-based grinding fluid;
more than two diamond wires form a diamond wire harness, one end of the diamond wire harness extends into the slender hole, and the other end of the diamond wire harness is installed on the reciprocating mechanism through the clamping mechanism;
the adsorption magnetic pole is fixed on the reciprocating mechanism;
the diamond wire is used for grinding and polishing the inner surface of the elongated hole; the adsorption magnetic pole is used for providing adsorption force for the diamond wire so that the diamond wire is attached to the inner surface of the elongated hole;
the reciprocating mechanism is used for driving the diamond sand wire to perform linear reciprocating motion along the length direction of the elongated hole; the clamping mechanism is used for fixing the diamond wire.
Further, the distance between the adsorption magnetic pole and the outer wall surface of the 3D printing forming part where the elongated hole is located is smaller than 2 mm.
Further, the cross-sectional area of the diamond wire harness is greater than or equal to 2/3 of the cross-sectional area of the elongated hole.
Further, the reciprocating mechanism includes: the device comprises a PLC (programmable logic controller), a rotating motor, a supporting plate, a magnetic pole frame, a screw-nut pair, a slide rail, a box body and a screw block;
the PLC controller and the rotating motor are both fixed on the box body and electrically connected, and the PLC controller is used for controlling the rotating motor to work;
a screw rod of the screw rod nut pair is coaxially connected with an output shaft of the rotating motor through a coupler, and the axis of the screw rod is parallel to the central line of the elongated hole; more than two nuts of the screw nut pair are respectively fixed on the corresponding screw blocks through positioning nuts B, and each nut is in threaded connection with the screw;
the two parallel slide rails are fixed on the box body along the length direction of the box body; the bottom surfaces of the supporting plates are provided with two sliding grooves, more than two supporting plates are respectively and correspondingly fixed on the wire block, and the two sliding grooves of each supporting plate are respectively in sliding fit with the two sliding rails;
the magnetic pole frame is arranged along the length direction of the box body and is fixedly connected with more than two supporting plates; the adsorption magnetic pole and the clamping mechanism are both fixed on the magnetic pole frame.
Further, the clamping mechanism includes: the supporting plate, the auxiliary magnetic pole and the annular support;
the supporting plate is fixed on the reciprocating mechanism;
the annular support is fixed on the support plate, and a mounting hole is processed on the annular support;
the auxiliary magnetic pole is of an arc plate-shaped structure and is fixed on the mounting hole of the annular support;
the carborundum wire harness is fixed on the auxiliary magnetic pole of the annular support.
Furthermore, the annular support is of an annular structure formed by butting two semicircular blocks; the inner hole of the annular structure is a mounting hole of the annular support; the two semicircular blocks are connected with the tensioning nut through the set screw, and the diameter of the inner hole of the annular support can be changed by adjusting the tensioning nut.
Further, the cross section of the elongated hole is circular, rectangular or irregular polygonal.
A polishing process for 3D printing of elongated holes comprises the following specific steps:
step 1, uniformly coating water-based grinding fluid on the outer surface of a diamond wire, and then extending one end of the diamond wire bundle into the elongated hole;
step 2, connecting the 3D printing forming part processed with the elongated hole with an output shaft of a driving motor, fixing the other end of the diamond wire harness on a clamping mechanism, adjusting the distance between the elongated hole and the adsorption magnetic pole, and ensuring that the distance between the magnetic pole and the outer wall surface of the 3D printing forming part where the elongated hole is located is less than 2 mm;
the diamond wire is attached to the inner surface of the elongated hole under the attraction of the adsorption magnetic pole, and when the elongated hole rotates along with the driving motor, the diamond wire scratches and rubs the inner surface of the elongated hole to grind and polish the inner surface of the elongated hole.
Has the advantages that: (1) one end of a diamond sand wire is inserted into the elongated hole, the other end of the diamond sand wire is fixed on a clamping mechanism of a reciprocating mechanism, the diamond sand wire is driven by the reciprocating mechanism to do linear reciprocating motion, the diamond sand wire is attached to the inner surface of the elongated hole under the attraction of an adsorption magnetic pole, and when the elongated hole rotates along with a driving motor, diamonds on the diamond sand wire generate scratching and friction on the inner surface of the elongated hole so as to grind and polish the inner surface of the elongated hole; meanwhile, the rotation of the elongated hole is utilized to generate centrifugal force, and the diamond sand line generates micro-deflection so that the grinding and polishing processing on the inner surface of the elongated hole is more uniform; the invention has the characteristics of high automation degree, cost saving and environmental protection.
(2) According to the invention, the polishing processing of the elongated hole formed by 3D printing with any aperture and any length can be realized by adjusting the number and the length of the diamond sand lines and changing the gap between the elongated hole and the adsorption magnetic pole, so that the processing efficiency of the 3D printing elongated hole is improved.
Drawings
FIG. 1 is an isometric view of a structural component of the present invention;
FIG. 2 is a structural composition diagram of a reciprocating mechanism;
FIG. 3 is a schematic view of a nut mounting of a lead screw nut pair;
FIG. 4 is a structural assembly view of the clamping mechanism;
the device comprises a rack 1, a positioning screw A, a driving motor 3, a coupler A, a supporting plate 5, a slender hole 6, a magnetic pole frame 7, a PLC controller 8, an adsorption magnetic pole 9, a diamond wire 10, a clamping device 11, a rotating motor 12, a screw sleeve cup 13, a coupler B14, a screw sleeve cup 15, a slide rail 16, a screw 17, a box 18, a screw block 19, a nut 20, a positioning screw B21, a supporting plate 22, a set screw 23, an auxiliary magnetic pole 24, an annular support 25, a tensioning nut 26 and a fixing screw 27.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
Example 1:
the present embodiment provides a grinding device for 3D printing elongated hole, see fig. 1, including: the grinding machine comprises a frame 1, a driving motor 3, a coupler A4, a reciprocating mechanism, a grinding mechanism and a clamping mechanism 11;
the structure to be ground and polished is an elongated hole 6 in the 3D printing forming part; the cross section of the elongated hole 6 can be circular, rectangular or other irregular polygons; in the embodiment, the cross section of the elongated hole 6 is rectangular, the two sides of the rectangle are respectively 10mm and 20mm, and the length of the elongated hole 6 is 200 mm;
the driving motor 3 is fixed on the frame 1 through a positioning screw A2; one end of the 3D printing forming part is connected with an output shaft of the driving motor 3 through a coupler A4, and the central line of the elongated hole 6 in the 3D printing forming part is superposed with the axis of the output shaft of the driving motor 3; the driving motor 3 is used for driving the 3D printing forming part to rotate around the central line of the elongated hole 6; the other end of the 3D printing forming part is connected with an external support or hoisting structure, so that the elongated hole 6 of the 3D printing forming part is prevented from being flexibly deformed;
one end of the grinding mechanism extends into the elongated hole 6, and the other end of the grinding mechanism is installed on the reciprocating mechanism through a clamping mechanism 11; the grinding mechanism is used for grinding and polishing the inner surfaces of the elongated holes 6; the reciprocating mechanism is used for driving the grinding mechanism to perform linear reciprocating motion along the length direction of the elongated hole 6; the clamping mechanism 11 is used for fixing the grinding mechanism;
wherein, referring to fig. 2-3, the reciprocating mechanism comprises: the device comprises a PLC (programmable logic controller) 8, a rotating motor 12, a coupler B14, a supporting plate 5, a magnetic pole frame 7, a lead screw sleeve cup 13, a lead screw sleeve cup cover 15, a lead screw nut pair, a slide rail 16, a box body 18 and a screw block 19;
the PLC 8 and the rotating motor 12 are both fixed on the box body 18, the PLC 8 is electrically connected with the rotating motor 12, and the PLC 8 is used for controlling the rotating motor 12 to work;
the lead screw 17 of the lead screw nut pair is coaxially connected with the output shaft of the rotating motor 12 through a coupler B14, and the axis of the lead screw 17 is parallel to the central line of the elongated hole 6; the lead screw 17 is arranged on the box body 18 through the lead screw sleeve cup 13 and the lead screw sleeve cup cover 15; more than two nuts 20 of the screw-nut pair are respectively fixed on the corresponding screw blocks 19 through positioning nuts B21, and each nut 20 is in threaded connection with the screw 17;
the two parallel slide rails 16 are fixed on the box body 18 along the length direction of the box body 18; the bottom surfaces of the supporting plates 5 are provided with two sliding grooves, more than two supporting plates 5 are respectively and correspondingly fixed on the wire block 19, and the two sliding grooves of each supporting plate 5 are respectively in sliding fit with the two sliding rails 16; when the screw 17 rotates, because the rotation of the nuts 20 is limited, more than two nuts 20 perform linear reciprocating motion along the axial direction of the screw 17, and further the support plate 5 is driven to perform synchronous linear reciprocating motion along the axial direction of the screw 17;
the magnetic pole frame 7 is arranged along the length direction of the box body 18 and is fixedly connected with more than two supporting plates 5;
referring to fig. 4, the clamping mechanism 11 includes: a support plate 22, an auxiliary magnetic pole 24, an annular support 25 and a fixing screw 27;
the supporting plate 22 is fixed on the magnetic pole frame 7 through a fixing screw 27;
the annular support 25 is an annular structure formed by two semicircular blocks in a butt joint mode; the two semicircular blocks are connected through a set screw 23 and a tensioning nut 26, and the diameter of the inner hole of the annular support 25 can be changed by adjusting the tensioning nut 26;
the annular support 25 is fixed on the support plate 22;
the auxiliary magnetic pole 24 is of an arc plate-shaped structure, and the auxiliary magnetic pole 24 is fixed on an inner hole of the annular support 25;
the grinding mechanism includes: a diamond wire 10 and an adsorption magnetic pole 9;
the diamond sand wire 10 consists of a steel wire and diamonds plated on the outer surface of the steel wire, and the outer surface of the diamond sand wire 10 is coated with water-based grinding fluid;
more than two carborundum wires 10 form a carborundum wire harness, one end of the carborundum wire harness is fixed on an auxiliary magnetic pole 24 of an inner hole of the annular support 25, the carborundum wire harness is fixed in the inner hole of the annular support 25 through the adsorption force of the auxiliary magnetic pole 24, the other end of the carborundum wire harness extends into the elongated hole 6, and the sectional area of the carborundum wire harness is larger than or equal to 2/3 of the sectional area of the elongated hole 6;
the adsorption magnetic pole 9 is fixed on the magnetic pole frame 7 and can perform linear reciprocating motion along with the magnetic pole frame 7, and the distance between the adsorption magnetic pole 9 and the outer wall surface of the 3D printing forming part where the elongated hole 6 is located is less than 2 mm.
Example 2:
based on the grinding device of embodiment 1, this embodiment provides a polishing process for 3D printing of elongated holes, which includes the following specific steps:
step 1, uniformly coating water-based grinding fluid on the outer surface of a diamond wire 10, and extending one end of the diamond wire bundle into the elongated hole 6;
step 2, connecting the 3D printing forming part processed with the elongated hole 6 with an output shaft of a driving motor 1, fixing the other end of the diamond wire harness on an auxiliary magnetic pole 24 of a clamping mechanism 11, adjusting the distance between the elongated hole 6 and an adsorption magnetic pole 9, and ensuring that the distance between the magnetic pole 9 and the outer wall surface of the 3D printing forming part where the elongated hole 6 is located is less than 2 mm;
the diamond wire 10 is attached to the inner surface of the elongated hole 6 under the attraction of the adsorption magnetic pole 9, and when the elongated hole 6 rotates along with the driving motor 3, the diamond wire 10 scratches and rubs the inner surface of the elongated hole 6 to grind and polish the inner surface of the elongated hole 6; meanwhile, the rotation of the elongated hole 6 is utilized to generate centrifugal force, and the diamond wire 10 generates micro deflection, so that the grinding and polishing are more uniform;
the polishing processing of the elongated holes with any aperture and any length can be realized by adjusting the number and the length of the diamond sand lines 10 and changing the gap between the elongated holes 6 and the adsorption magnetic poles 9, so that the processing efficiency of the 3D printing elongated holes is improved.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A grinder for 3D printing elongated holes, characterized by comprising: the device comprises a rack (1), a driving motor (3), a reciprocating mechanism, a carborundum wire (10), an adsorption magnetic pole (9) and a clamping mechanism (11);
the structure to be ground and polished is an elongated hole (6) in the 3D printing forming part;
the driving motor (3) is fixed on the frame (1); the 3D printing forming part is connected with an output shaft of a driving motor (3), and the central line of a slender hole (6) in the 3D printing forming part is superposed with the axis of the output shaft of the driving motor (3); the driving motor (3) is used for driving the 3D printing forming part to rotate around the central line of the elongated hole (6);
the diamond sand wire (10) consists of a steel wire and diamonds plated on the outer surface of the steel wire, and the outer surface of the diamond sand wire (10) is coated with water-based grinding fluid;
more than two diamond wires (10) form a diamond wire harness, one end of the diamond wire harness extends into the elongated hole (6), and the other end of the diamond wire harness is installed on the reciprocating mechanism through a clamping mechanism (11);
the adsorption magnetic pole (9) is fixed on the reciprocating mechanism;
the diamond wire (10) is used for grinding and polishing the inner surface of the elongated hole (6); the adsorption magnetic pole (9) is used for providing adsorption force for the diamond sand wire (10) so that the diamond sand wire (10) is attached to the inner surface of the elongated hole (6);
the reciprocating mechanism is used for driving the diamond sand wire (10) to perform linear reciprocating motion along the length direction of the elongated hole (6); the clamping mechanism (11) is used for fixing the diamond wire (10).
2. The grinding device for 3D printing elongated holes as claimed in claim 1, characterized in that the distance between the adsorption magnetic pole (9) and the outer wall surface of the 3D printing forming part where the elongated holes (6) are located is less than 2 mm.
3. A milling device for 3D printing elongated holes according to claim 1, characterized in that the cross-sectional area of the diamond wire strands is greater than or equal to 2/3 of the cross-sectional area of the elongated hole (6).
4. The abrading apparatus for 3D printing elongated apertures of claim 1, wherein the reciprocating mechanism comprises: the device comprises a PLC (programmable logic controller) (8), a rotating motor (12), a supporting plate (5), a magnetic pole frame (7), a screw-nut pair, a sliding rail (16), a box body (18) and a screw block (19);
the PLC (8) and the rotating motor (12) are both fixed on the box body (18), the PLC (8) is electrically connected with the rotating motor (12), and the PLC (8) is used for controlling the rotating motor (12) to work;
a screw rod (17) of the screw rod nut pair is coaxially connected with an output shaft of a rotating motor (12) through a coupler, and the axis of the screw rod (17) is parallel to the central line of the elongated hole (6); more than two nuts (20) of the screw-nut pair are respectively fixed on corresponding screw blocks (19) through positioning nuts B (21), and each nut (20) is in threaded connection with the screw (17);
the two parallel slide rails (16) are fixed on the box body (18) along the length direction of the box body (18); the bottom surfaces of the supporting plates (5) are provided with two sliding grooves, more than two supporting plates (5) are respectively and correspondingly fixed on the wire block (19), and the two sliding grooves of each supporting plate (5) are respectively in sliding fit with the two sliding rails (16);
the magnetic pole frame (7) is arranged along the length direction of the box body (18) and is fixedly connected with more than two supporting plates (5); the adsorption magnetic pole (9) and the clamping mechanism (11) are both fixed on the magnetic pole frame (7).
5. A milling device for 3D printing elongated holes according to claim 1, characterized in that the clamping mechanism (11) comprises: a support plate (22), an auxiliary magnetic pole (24) and an annular support (25);
the supporting plate (22) is fixed on the reciprocating mechanism;
the annular support (25) is fixed on the support plate (22), and a mounting hole is processed on the annular support (25);
the auxiliary magnetic pole (24) is of an arc plate-shaped structure, and the auxiliary magnetic pole (24) is fixed on a mounting hole of the annular support (25);
the carborundum pencil is fixed on an auxiliary magnetic pole (24) of the annular support (25).
6. A milling device for 3D printing elongated holes according to claim 5, characterized in that the annular seat (25) is an annular structure consisting of two half-round blocks butted together; the inner hole of the annular structure is a mounting hole of the annular support (25); the two semicircular blocks are connected through a set screw (23) and a tensioning nut (26), and the diameter of the inner hole of the annular support (25) can be changed by adjusting the tensioning nut (26).
7. A milling device for 3D printing elongated holes according to claim 1, characterized in that the elongated hole (6) has a cross section of a circle, a rectangle or an irregular polygon.
8. The polishing process for 3D printing of the elongated hole based on the claim 4 is characterized by comprising the following specific steps:
step 1, uniformly coating water-based grinding fluid on the outer surface of a diamond wire (10), and extending one end of the diamond wire bundle into the elongated hole (6);
step 2, connecting the 3D printing forming part processed with the elongated hole (6) with an output shaft of a driving motor (1), fixing the other end of the diamond wire harness on a clamping mechanism (11), adjusting the distance between the elongated hole (6) and an adsorption magnetic pole (9), and ensuring that the distance between the magnetic pole (9) and the outer wall surface of the 3D printing forming part where the elongated hole (6) is located is less than 2 mm;
step 3, the PLC (8) controls the rotating motor (12) to drive the screw rod (17) to rotate, and the nut (20) drives the support plate (5), the magnetic pole frame (7) and the adsorption magnetic pole (9) on the magnetic pole frame (7) to perform linear reciprocating movement along the axial direction of the screw rod (17);
the diamond sand wire (10) is attached to the inner surface of the elongated hole (6) under the attraction of the adsorption magnetic pole (9), and when the elongated hole (6) rotates along with the driving motor (3), the diamond sand wire (10) scratches and rubs the inner surface of the elongated hole (6), so that the inner surface of the elongated hole (6) is ground and polished.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010940935.3A CN112318233B (en) | 2020-09-09 | 2020-09-09 | Grinding device and polishing process for 3D printing elongated hole |
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| CN202010940935.3A CN112318233B (en) | 2020-09-09 | 2020-09-09 | Grinding device and polishing process for 3D printing elongated hole |
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| CN112318233A true CN112318233A (en) | 2021-02-05 |
| CN112318233B CN112318233B (en) | 2022-12-09 |
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| CN110695775A (en) * | 2019-11-04 | 2020-01-17 | 辽宁科技大学 | Device and process for ultrasonically grinding double-panel parts |
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2020
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| JP2006015450A (en) * | 2004-07-01 | 2006-01-19 | Hoya Corp | Polishing brush, manufacturing method of magnetic disk substrate, manufacturing device for magnetic disk substrate, and magnetic disk manufacturing method |
| CN207415096U (en) * | 2017-11-24 | 2018-05-29 | 宁波容大光电科技有限公司 | The inner hole grinder of ceramic insertion core |
| CN208591981U (en) * | 2018-05-18 | 2019-03-12 | 王广朴 | A kind of colored stone metal tile glue spraying stucco line |
| CN108555733A (en) * | 2018-06-08 | 2018-09-21 | 辽宁科技大学 | Device for refining Medical injection needle inner surface |
| CN209425123U (en) * | 2018-12-25 | 2019-09-24 | 苏州创易技研股份有限公司 | The suspended line mouth grinding clamp of line mouth hole abrading machine |
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| CN110695775A (en) * | 2019-11-04 | 2020-01-17 | 辽宁科技大学 | Device and process for ultrasonically grinding double-panel parts |
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| CN112318233B (en) | 2022-12-09 |
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