CN107838705B - Positioning jig for numerical control machining of side holes of thin-wall products - Google Patents
Positioning jig for numerical control machining of side holes of thin-wall products Download PDFInfo
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- CN107838705B CN107838705B CN201710946978.0A CN201710946978A CN107838705B CN 107838705 B CN107838705 B CN 107838705B CN 201710946978 A CN201710946978 A CN 201710946978A CN 107838705 B CN107838705 B CN 107838705B
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- positioning
- holes
- numerical control
- thin
- heat dissipation
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- 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
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- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- 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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- 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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Drilling And Boring (AREA)
Abstract
The present case discloses a positioning jig for numerical control processing thin wall product side opening, including: the base is arranged on the numerical control machine tool; the positioning block is fixed on the base, a workpiece is clamped on the positioning block, and machining grooves are formed in the two transverse side faces of the positioning block; the rigid protection plate is made of porous aluminum materials, a plurality of rectangular radiating grooves are formed in the rigid protection plate in a penetrating mode along the length direction, a plurality of circular through holes are formed in the groove walls on the two sides of each radiating groove, the through holes in the two adjacent groove walls are arranged in a staggered mode, and the through holes are communicated with the spaces of the two adjacent radiating grooves; and the cooling device comprises a water tank, a water pipe and a spray head. The positioning jig that the present case adopted makes the heat on the machined part be convenient for distribute to the machined part is difficult for taking place to be heated and is out of shape.
Description
Technical Field
The invention relates to numerical control machining, in particular to a positioning jig for machining a side hole of a thin-wall product in a numerical control mode.
Background
The thin-wall part has large size, large machining allowance and low relative rigidity, is easy to generate machining deformation under the influence of cutting heat, is difficult to control machining precision, and becomes important constraint of the thin-wall part. The energy consumed in the machining process is converted into heat, the cutting temperature is increased due to a large amount of cutting heat, the machining precision of the bow and the arrow and the quality of the machined surface are affected, 52.5% of cutting heat is transmitted out of a workpiece during drilling machining, a large amount of cutting heat is generated during machining of the side hole of the thin-wall product, the thin-wall product can generate heat, and the flatness of the thin-wall product is affected while deformation is easily caused due to overhigh temperature.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a positioning jig for numerical control machining of side holes of thin-walled products, wherein a rigid protective plate is made of porous metal materials and has excellent heat dissipation performance, a heat dissipation groove is formed in the rigid protective plate, a through hole is formed in the heat dissipation groove, cooling liquid sprayed out in the machining process can enter the heat dissipation groove from the through hole and then is discharged from the through hole at the other side, the cooling liquid continuously circulates in the heat dissipation groove to take away heat on a machined part, and the technical problem of thermal deformation in the machining process of the machined part is solved
To achieve these objects and other advantages and in accordance with the purpose of the invention, a positioning jig for numerical control machining of a side hole of a thin-walled part is provided, which includes:
the base is arranged on the numerical control machine tool;
the positioning block is fixed on the base, a workpiece is clamped on the positioning block, machining grooves are formed in two transverse side faces of the positioning block, and the machining grooves are of a structure with a large outer part and a small inner part;
the rigid guard plate is of a plate-shaped structure and is loaded on the workpiece, the rigid guard plate is made of a porous aluminum material, a plurality of rectangular heat dissipation grooves are formed in the rigid guard plate in a penetrating mode along the length direction, a plurality of circular through holes are formed in the groove walls on the two sides of each heat dissipation groove, the through holes in the two adjacent groove walls are arranged in a staggered mode, the through holes are communicated with the spaces of the two adjacent heat dissipation grooves, a layer of heat-conducting silica gel with fixed thickness is coated on the lower end face of the rigid guard plate, and the heat-conducting silica gel is attached to the workpiece; and
the cooling device comprises a water tank, a water pipe and a spray head, wherein the water tank is arranged on the bed body of the numerical control machine tool, cooling liquid is filled in the water tank, the water pipe is fixed on the base, the spray head is movably arranged near the processing position, the through hole on the side nearest to the spray head is a water inlet, the through hole on the side farthest from the spray head is a water outlet, and the cooling liquid flows into the heat dissipation groove of the rigid protection plate from the water inlet.
Preferably, the two sides of the positioning block are respectively provided with a positioning column protruding out of the positioning block.
Preferably, two sides of the lower end face of the rigid guard plate are respectively provided with a positioning hole, and when the rigid guard plate is loaded on a workpiece, the positioning holes are inserted into the positioning holes.
Preferably, a plurality of holes are randomly distributed in the rigid guard plate, and the holes are heat dissipation holes.
Preferably, a rectangular fixing groove is formed in each of two ends of the rigid protection plate, and the two fixing grooves are formed in two sides of the heat dissipation groove respectively.
Preferably, the pneumatic press block positioning device further comprises two pneumatic press blocks, and the two pneumatic press blocks are longitudinally and movably arranged on two sides of the upper end of the positioning block respectively.
Preferably, the two pneumatic pressing blocks are respectively connected with an air cylinder, and the air cylinder is a rotary telescopic air cylinder.
Preferably, two pneumatic briquetting is the L type, pneumatic briquetting includes briquetting and lower briquetting, lower briquetting with the fixed slot cooperatees, when pneumatic briquetting was arranged in the lower extreme, lower briquetting was arranged in the fixed slot.
The invention has the beneficial effects that: the present case is through adopting porous aluminium material as the material of rigidity backplate, has set up the radiating groove simultaneously on the rigidity backplate for the rigidity backplate can distribute away the heat of machined part, is equipped with the through-hole on the cell wall of radiating groove simultaneously, and the coolant liquid can be followed the through-hole and carried out the water-cooling to the machined part in getting into the radiating groove in the course of working, makes the difficult emergence of machined part be heated and is out of shape.
Drawings
FIG. 1 is a schematic structural view of a rigid guard plate of a positioning fixture;
FIG. 2 is a schematic structural diagram of a pneumatic press block of the positioning jig;
fig. 3 is a schematic structural view of a positioning jig clamping system.
Detailed Description
The present invention will be described in further detail with reference to the following drawings in conjunction with embodiments thereof, so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1 and 2, the present disclosure provides a positioning fixture for numerical control machining of thin-walled products, which integrally includes: the device comprises a base, a positioning block, a rigid protection plate, a pneumatic device and a cooling device.
And a base 500 installed on the numerical control machine tool.
And the positioning block 200 is transversely fixed on the base, and the workpiece is clamped on the positioning block 200. The longitudinal two sides of the upper end surface of the positioning block 200 are respectively provided with a positioning column, the workpiece is provided with a positioning hole, and the workpiece is fixed at a specific position of the positioning block 200 through the cooperation of the hole columns and the workpiece. The air outlet is connected with the air suction device, when the air suction device works, air between the positioning block and the workpiece is sucked from the air outlet, the workpiece is enabled to be tightly attached to the molded surface of the positioning block 200, the actually measured air pressure adsorption force can reach 8-9kg and can keep the adsorption force stable and unchanged, the processing grooves 201 are formed in the two transverse side faces of the positioning block 200, and the processing grooves 201 provide enough processing space for the cutter.
The rigid guard plate 100 is of a plate-shaped structure, the rigid guard plate 100 is loaded on a workpiece, positioning holes are formed in the longitudinal two sides of the lower end face of the rigid guard plate and are matched with positioning columns on the positioning blocks, and the rigid guard plate is pressed on the workpiece, so that the rigidity stability of the workpiece is improved. A rectangular fixing groove 102 is formed in each of the two longitudinal sides of the upper end face of the rigid guard plate 100, a plurality of rectangular radiating grooves 101 are formed in the upper end of the rigid guard plate in a penetrating mode along the length direction, a plurality of through holes 103 are formed in the groove walls of the two sides of each radiating groove 101, the through holes 103 in the two adjacent groove walls are arranged in a staggered mode, the through holes 103 are communicated with the spaces of the two adjacent radiating grooves 101, the rigid guard plate 100 is made of porous aluminum materials, the radiating performance of the porous metal materials is good, and. Random distribution has a plurality of holes in the many empty metal material, these holes are the louvre, the special structure of porous aluminium makes the lower terminal surface of rigidity backplate 100 can not with the fine laminating of machined part, the heat conduction silica gel of the fixed thickness of one deck is scribbled to the lower terminal surface at rigidity backplate 100, heat conduction silica gel can fill the space between machined part and the rigidity backplate, make the heat of machined part can transmit to rigidity backplate 100 through heat conduction silica gel on, the rigidity backplate both can provide certain pressing force to the machined part and also can accelerate the heat of work piece and give off.
Pneumatic means, it includes cylinder 300 and installs pneumatic briquetting 400 on the cylinder, pneumatic briquetting 400 is the L type, pneumatic briquetting 400 sets up on the piston rod of cylinder 300, cylinder 300 is rotatory telescopic cylinder, the action of pneumatic briquetting 400 is being controlled to cylinder 300, the vertical activity of pneumatic briquetting 400 sets up the vertical both sides at locating piece 200, pneumatic briquetting includes briquetting 401 and briquetting 402 down, briquetting 402 cooperatees with fixed slot 102 down, when pneumatic briquetting 400 is located the bottom, pneumatic briquetting 400 is pressed in the fixed slot 102 of rigidity backplate 100, in the course of working, pneumatic briquetting 400 plays the fixed action to rigidity backplate 100, the cooperation of briquetting 402 and fixed slot 102 makes the centre gripping rigidity of machined part bigger down simultaneously.
The cooling device comprises a water tank, a water pipe and a spray head. The water tank is arranged on the bed body of the numerical control machine tool, cooling liquid is filled in the water tank, the water pipe is fixed on the base 500, and the spray head is arranged close to the processing tank 201. The spray head continuously sprays cooling liquid to the processing part so as to reduce the temperature of the workpiece at the processing part and the temperature of the cutter, and meanwhile, part of the cooling liquid can enter the heat dissipation groove from the through hole on the heat dissipation groove of the rigid protection plate.
In the above technical solution, after the base 500 and the positioning block 400 are mounted, the workpiece is clamped on the positioning block 400, and meanwhile, the rigid guard plate 100 is loaded on the workpiece, and the air cylinder 300 drives the pneumatic press block 400 to act, so that the pneumatic press block 400 is tightly pressed on the rigid guard plate 100. During the machining process, the cutter drills the side wall of the workpiece, a large amount of heat is generated during the machining process, most of the heat is transmitted out of the workpiece, the heat of the workpiece is transmitted to the rigid protective plate 100, the rigid protective plate 100 has excellent heat dissipation performance, so that heat can be quickly dissipated, meanwhile, in the machining process, the spray head of the cooling device can always spray cooling liquid to the machining area, part of the cooling liquid can enter the heat dissipation groove 101 of the rigid protection plate 100 through the through hole close to one side of the spray head, and as the heat dissipation groove is penetratingly arranged, therefore, the cooling liquid can directly contact with the workpiece to take away heat on the surface of the workpiece, the through holes in the wall of the heat dissipation groove 101 enable the cooling liquid to continuously enter the heat dissipation groove from the through hole on the side closest to the nozzle and the cooling liquid to be discharged from the through hole on the side farthest from the nozzle, the cooling liquid continuously circulates, enters the heat dissipation groove and is discharged to take away a large amount of heat, and the workpiece is prevented from being heated and deformed due to overhigh temperature in the machining process.
From above, the positioning jig of this case has better heat dispersion, can distribute away the heat that adds on the work piece in the course of working, makes the difficult emergence of machined part be heated and warp.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (8)
1. The utility model provides a positioning jig for numerical control processing thin wall product side opening which characterized in that includes:
the base is arranged on the numerical control machine tool;
the positioning block is fixed on the base, a workpiece is clamped on the positioning block, machining grooves are formed in two transverse side faces of the positioning block, and the machining grooves are of a structure with a large outer part and a small inner part;
the rigid guard plate is of a plate-shaped structure and is loaded on the workpiece, the rigid guard plate is made of a porous aluminum material, a plurality of rectangular heat dissipation grooves are formed in the rigid guard plate in a penetrating mode along the length direction, a plurality of through holes are formed in the groove walls on the two sides of each heat dissipation groove, the through holes in the two adjacent groove walls are arranged in a staggered mode and are communicated with the spaces of the two adjacent heat dissipation grooves, a layer of heat-conducting silica gel with fixed thickness is coated on the lower end face of the rigid guard plate, and the heat-conducting silica gel is attached to the workpiece; and
the cooling device comprises a water tank, a water pipe and a spray head, wherein the water tank is arranged on the bed body of the numerical control machine tool, cooling liquid is filled in the water tank, the water pipe is fixed on the base, the spray head is movably arranged near the processing position, the through hole on the side nearest to the spray head is a water inlet, the through hole on the side farthest from the spray head is a water outlet, and the cooling liquid flows into the heat dissipation groove of the rigid protection plate from the water inlet.
2. The positioning fixture for numerical control machining of the side hole of the thin-walled product as claimed in claim 1, wherein two sides of the positioning block are respectively provided with a positioning column protruding from the positioning block.
3. The positioning jig for numerical control machining of the side holes of the thin-walled product according to claim 2 is characterized in that positioning holes are respectively formed in two sides of the lower end face of the rigid protective plate, and when the rigid protective plate is loaded on a workpiece, the positioning holes are inserted into the positioning holes.
4. The positioning fixture for numerical control machining of the side hole of the thin-walled product according to claim 3, wherein a plurality of holes are randomly distributed in the rigid guard plate, the holes are heat dissipation holes,
the through hole is a water outlet, and the cooling liquid flows into the heat dissipation groove of the rigid protection plate from the water inlet.
5. The positioning fixture for numerical control machining of the side hole of the thin-walled product according to claim 1, wherein two ends of the rigid guard plate are respectively provided with a rectangular fixing groove, and the two fixing grooves are respectively arranged at two sides of the heat dissipation groove.
6. The positioning jig for numerical control machining of the side hole of the thin-walled product according to claim 1, further comprising two pneumatic pressing blocks, wherein the two pneumatic pressing blocks are longitudinally and movably arranged on two sides of the upper end of the positioning block.
7. The positioning jig for numerical control machining of the side holes of the thin-walled product according to claim 6, wherein the two pneumatic pressing blocks are respectively connected with a cylinder, and the cylinder is a rotary telescopic cylinder.
8. The positioning jig for numerical control machining of the side hole of the thin-walled product according to claim 7, wherein two of the pneumatic pressing blocks are L-shaped, the pneumatic pressing blocks comprise an upper pressing block and a lower pressing block, the lower pressing block is matched with the fixing groove, and when the pneumatic pressing block is arranged at the lowermost end, the lower pressing block is arranged in the fixing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946978.0A CN107838705B (en) | 2017-10-12 | 2017-10-12 | Positioning jig for numerical control machining of side holes of thin-wall products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946978.0A CN107838705B (en) | 2017-10-12 | 2017-10-12 | Positioning jig for numerical control machining of side holes of thin-wall products |
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| Publication Number | Publication Date |
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| CN107838705A CN107838705A (en) | 2018-03-27 |
| CN107838705B true CN107838705B (en) | 2020-06-23 |
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| CN201710946978.0A Active CN107838705B (en) | 2017-10-12 | 2017-10-12 | Positioning jig for numerical control machining of side holes of thin-wall products |
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| CN109175515A (en) * | 2018-08-17 | 2019-01-11 | 佛山市洵腾科技有限公司 | A kind of handware cutting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201222402Y (en) * | 2008-06-18 | 2009-04-15 | 张宝魁 | Aluminum passageway type water-cooling heat radiation board |
| CN102420019A (en) * | 2011-08-16 | 2012-04-18 | 中国计量学院 | Water-cooled heat-dissipating plate and manufacturing method thereof |
| KR20160069108A (en) * | 2014-12-08 | 2016-06-16 | 주식회사 피앤큐텍 | Jig apparatus for manufacturing cell phone frame |
| DE102015114710A1 (en) * | 2015-09-03 | 2017-03-09 | Röhm Gmbh | Clamping jaw and method for producing a clamping jaw |
| CN206024402U (en) * | 2016-09-14 | 2017-03-15 | 株洲中车时代电气股份有限公司 | A kind of temperature automatically controlled water-cooling plate and its discharge resistance component |
| CN206474934U (en) * | 2016-10-19 | 2017-09-08 | 深圳市永达康精密科技有限公司 | A kind of modified mobile phone fixture |
| CN206169672U (en) * | 2016-11-24 | 2017-05-17 | 芜湖华亨汽车部件有限公司 | Vacuum booster takes master cylinder assembly master cylinder body to bore oblique slot hole frock |
| CN206316967U (en) * | 2016-12-23 | 2017-07-11 | 东莞市旭锐精密五金制品有限公司 | Cell phone rear cover positioning fixture |
| CN206536256U (en) * | 2017-03-01 | 2017-10-03 | 东莞市诺恒精密机械有限公司 | A kind of fixture of processing mobile phone center |
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