CN100427250C - Air floated high speed electric mandrel - Google Patents
Air floated high speed electric mandrel Download PDFInfo
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- CN100427250C CN100427250C CNB2006101242643A CN200610124264A CN100427250C CN 100427250 C CN100427250 C CN 100427250C CN B2006101242643 A CNB2006101242643 A CN B2006101242643A CN 200610124264 A CN200610124264 A CN 200610124264A CN 100427250 C CN100427250 C CN 100427250C
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Abstract
The present invention relates to one kind of air floated high speed electric mandrel for precise machining of circuit board based on air floating principle. The mandrel has circularly water cooled shaft body, water cooled upper and lower air bearings, hollow shaft, cylinder, stator, clamping head, etc. The mandrel has no seizing caused by high temperature, high long term precision, high safety, and high machining performance.
Description
Technical field
The present invention relates to a kind of device to circuit board processing, specifically a kind of air supporting principle of utilizing is to the precision machined electric main shaft of circuit board.
Background technology
Circuit board is of many uses now, requirement to the processing of circuit board is more and more stricter, singly do not require high-accuracy processing, and require high-speed processing, therefore, someone has proposed ZL03153311.6 " main shaft device ", it is the air duct generation air suspending power by internal body, and form air bearing rotating shaft is suspended in internal body, make rotating shaft rotate at a high speed with motor stator then, but when main shaft is worked, singly be not that stator produces a large amount of heat, and friction and normal temperature compressed air all can bring certain heat between rotating shaft and compressed air, when intensive work for a long time, main shaft accumulates heat too much can make rotating shaft generation seize phenomenon, causes the operating accuracy of air-floating main shaft to reduce, and influences security; In addition, when tool changing, the logical entrance pressure of piston is contracted behind the air the push rod top to fairlead, fairlead moves down seam chuck and drill bit is ejected, at this moment just available hand or instrument take out drill bit, change required drill bit, but for the circuit board processing industry of paying attention to efficient now, this main shaft does not also reach the more requirement of bit change fast; Moreover this main shaft needs overall time processing, and order is produced main shaft and made troubles, and is not easy to promote and use.
Summary of the invention
The body that the objective of the invention is a kind of air supporting electricity main shaft, it makes the main shaft can Yin Gaowen and the seize phenomenon of rotating shaft takes place, and makes main shaft also can keep precision working long hours, guarantee security, body comes out to process from the main shaft overall separation, is convenient to produce, and is convenient to promote and use.
Technical solution of the present invention is at existing stator, the air thrust bearing, Connection Block, the gap division board, on the basis of drill bit, the present invention particularly includes the hydronic body of water, have water hydronic outside shaft circumference, be provided with on air bearing and following air bearing, the rotating shaft that can lay down the hollow of drill bit device is automatically arranged, the cylinder that can lay down the rotating shaft of drill bit device is automatically arranged, on in body, the bottom is provided with air bearing and following air bearing, between last air bearing and the following air bearing stator is arranged, in last air bearing, following air bearing and stator intermediate throughholes place are provided with rotating shaft, and the push rod of cylinder is arranged among the rotating shaft, and chuck is contained in the holder of rotating shaft.
More than body of the present invention overcoat is arranged, the interior cover of tape spool to through hole arranged, interior cover and overcoat interference fit, the interior cover outside is provided with the spirality tank from top to bottom, interior cover inside is provided with independently axial air feed path and independently axial cooling-water duct; The upper and lower of interior cover inwall is respectively equipped with the radial air through hole that communicates with axial air passage, and the radially cooling water through hole that communicates with axial cooling-water duct; The inside, last top of interior cover is provided with the cooling water feed path that communicates with the spirality tank, and the cooling water return flow line, and interior cover inwall bottom is provided with a radially cooling water through hole that communicates with the spirality tank of interior cover outer lower portion.
Flange is arranged at the air bearing top of going up of the present invention, axis body is arranged at the flange bottom, there is the axially extending bore that connects flange and axis body the center of bearing, axis body is provided with the radial air feed path, the air return flow line that communicates with the radial air feed path is arranged in the axis body, be provided with O-ring seal more than the middle part of axis body periphery, and the middle part is provided with the cooling water circulating slot to have down O-ring seal in the axis body between last O-ring seal and the following O-ring seal; Flange has by spaced apart eight of certain distance and is parallel to axial air feed path; Axis body communicates with the air feed path of flange near the above-listed air duct of flange bottom.
More than down air bearing of the present invention bottom flange is arranged, the axis body on flange top, there is the axially extending bore that connects flange and axis body the center of bearing, axis body is provided with the radial air feed path, the air return flow line that communicates with the radial air feed path is arranged in the axis body, be provided with O-ring seal more than the middle part of axis body periphery, and the middle part is provided with the cooling water circulating slot to have down O-ring seal in the axis body between last O-ring seal and the following O-ring seal.
More than rotating shaft of the present invention the axis body of axially extending bore is arranged, the axis body afterbody has flange, axis body middle part outer surface has the copper mouse cage, be provided with sliding sleeve in the axially extending bore, be fixed with gland in the sliding sleeve, gland is the cylinder of a hollow, and there is the head of a projection its lower surface, the gland head is in the holder afterbody top that is fixed on the axially extending bore head, is provided with disk spring between gland and holder; The gland central shaft is fixed with the hollow screw of tape spool to through hole to locating to run through.
Chuck of the present invention has the chuck bar, and chuck bar front end is fixed with changeover portion, and the changeover portion front end is fixed with the circular cone clamp, and there is axially extending bore chuck inside, and the circular cone clamp is made of the leading portion of the back segment of expansion forward and contraction forward; The back segment of the chuck bar of chuck, changeover portion, circular cone clamp is housed among the chuck; Circular cone clamp end is to changeover portion, and intersect in the axle center of two radial direction through hole in four the axial cut-outs grooves that circumference is equally spaced and communicates with two radial direction through hole at changeover portion rear portion, changeover portion.
More than cylinder of the present invention cylinder body is arranged, the cylinder top cover that one side band air supply hole is arranged, inferior part of the cylinder block is fixed with Connection Block, the Connection Block inner bottom surface has cooling-water duct, cylinder axis is fixed with push rod to the center, the center of cylinder top cover is provided with cavity, in cylinder body, be provided with the upper strata air chamber, be provided with the axial big piston in upper strata in the air chamber of upper strata, Connection Block upper strata cavity and cylinder body lower surface constitute lower floor's air chamber, be provided with the axial big piston of lower floor in lower floor's air chamber, be provided with axial back-moving spring between the upper surface of lower floor axial big piston bottom surface and Connection Block cavity, axial centre place between two big pistons is penetrated with the push-rod handle of tape spool to central blind hole, the blind hole head is on lower floor axial piston upper surface, be provided with the radial direction through hole that runs through push-rod handle at the blind hole head, the bottom of push-rod handle is fixed with valve piston and is arranged on the axial big piston of lower floor, the bottom surface that is provided with the axial big piston of a step and lower floor between the body of rod of push-rod handle and push rod joins, push rod body of rod bottom is provided with radial direction through hole, body of rod head shaft is provided with the blind hole that communicates with radial direction through hole to the center, and the blind hole opening is located at body of rod end.
Operation principle of the present invention is the air inlet feeding compressed air from Connection Block, compressed air enters the axis body air duct of air bearing by the air feed path of body, impose radial suspension force for rotating shaft top, the flange air duct of bearing applies axial suspension power for the flange of rotating shaft, the axis body air duct of following air bearing imposes radial suspension force for the bottom of rotating shaft, makes rotating shaft enter duty; Water inlet from Connection Block leads to into cooling water simultaneously, and cooling water is through the spirality tank of body, the cooling-water duct of last air bearing, the cooling-water duct of following air bearing, the cooling-water duct of Connection Block, the delivery port from Connection Block refluxes at last, can keep the operating temperature of main shaft like this; When needs carry out cutter changing, at the logical entrance pressure of the air supply port of the cylinder top cover air that contracts, promote two layers of big piston in the cylinder, big piston promotes push rod, gland in the push rod downward top rotating shaft, when gland moves down, the circular cone clamp of chuck opens because of natural elasticity, the logical entrance pressure of the air supply port of the Connection Block air that contracts simultaneously, compressed air leads to into axial blind hole via the through hole of cylinder push-rod end, enters the screw axial through hole of gland again from the blind hole front end, enters the axially extending bore of chuck at last, the former drill bit that is fixed in the chuck is extruded, can be unloaded bottom tool; Disconnect the Connection Block compressed air new cutter of just can packing into; Cut off the cylinder air feed, the elasticity of the back-moving spring of disk spring between gland and chuck at this moment, and cylinder push-rod and outer inner room is accommodated chuck in the chuck again, but just clamp-on tool.
Advantage of the present invention is to make the main shaft can Yin Gaowen and the seize phenomenon of rotating shaft takes place, and makes main shaft also can keep precision working long hours, and guarantees security, and body comes out to process from the main shaft overall separation, is convenient to produce, and is convenient to promote and use.
Description of drawings
Fig. 1 is the organigram of overlooking of the present invention;
Fig. 2 is an A-A profile construction schematic diagram of the present invention;
Fig. 3 is a B-B profile construction schematic diagram of the present invention;
Fig. 4 is a C-C profile construction schematic diagram of the present invention;
Fig. 5 is the profile construction schematic diagram of body of the present invention;
Fig. 6 is a profile construction schematic diagram of going up air bearing of the present invention;
Fig. 7 is the organigram of overlooking of going up air bearing of the present invention;
Fig. 8 is the profile construction schematic diagram of air bearing down of the present invention;
Fig. 9 is the organigram of overlooking of air bearing down of the present invention;
Figure 10 is a D-D profile construction schematic diagram of the present invention;
Figure 11 is an E-E profile construction schematic diagram of the present invention;
Figure 12 is the profile construction schematic diagram of rotating shaft of the present invention;
Figure 13 is the organigram of chuck of the present invention;
Figure 14 is the right apparent structure schematic diagram of chuck of the present invention;
Figure 15 is the profile construction schematic diagram of cylinder of the present invention.
The specific embodiment
According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, the present invention shown in Figure 15 is at existing stator 1, air thrust bearing 2, Connection Block 3, gap division board 4, on the basis of drill bit 5, the present invention particularly includes the hydronic body 6 of water, have water hydronic outside rotating shaft 7 circumference, be provided with on air bearing 8 and following air bearing 9, the rotating shaft 7 of the hollow that can lay down drill bit 5 devices is automatically arranged, the cylinder 10 that the rotating shaft 7 that can lay down drill bit 5 devices is automatically arranged, on in body 6, the bottom is provided with air bearing 8 and following air bearing 9, between last air bearing 8 and the following air bearing 9 stator 1 is arranged, in last air bearing 8, following air bearing 9 is provided with rotating shaft 7 with stator 1 intermediate throughholes place, the push rod 10.11 of cylinder 10 is arranged among the rotating shaft 7, and chuck 11 is contained in the holder 7.7 of rotating shaft 7.
Body 6 of the present invention has overcoat 6.1, the interior cover 6.3 of tape spool to through hole 6.2 arranged, interior cover 6.3 and overcoat 6.1 interference fit, interior cover 6.3 outsides are provided with spirality tank 6.4 from top to bottom, and interior cover 6.3 inside are provided with independently axial air feed path 6.5 and independently axial cooling-water duct 6.6; The upper and lower of interior cover 6.3 inwalls is respectively equipped with the radial air through hole 6.7 that communicates with axial air passage 6.5, and the radially cooling water through hole 6.8 that communicates with axial cooling-water duct 6.6; The inside, last top of interior cover 6.3 is provided with the cooling water feed path 6.9 that communicates with spirality tank 6.4, and cooling water return flow line 6.10, interior cover 6.3 inwall bottoms are provided with a radially cooling water through hole 6.11 that communicates with the spirality tank 6.4 of interior cover 6.3 outer lower portion.
Flange 8.1 is arranged at air bearing 8 tops of going up of the present invention, axis body 8.2 is arranged at flange 8.1 bottoms, there is the axially extending bore 8.3 that connects flange 8.1 and axis body 8.2 center of bearing, axis body 8.2 is provided with radial air feed path 8.4, the air return flow line 8.5 that communicates with radial air feed path 8.4 is arranged in the axis body 8.2, be provided with O-ring seal 8.6 more than the middle part of axis body 8.2 peripheries, and the middle part is provided with cooling water circulating slot 8.8 to have down O-ring seal 8.7 in the axis body 8.2 between last O-ring seal 8.6 and the following O-ring seal 8.7; Flange 8.1 has by spaced apart eight of certain distance and is parallel to axial air feed path 8.9; Axis body 8.2 communicates with the air feed path 8.9 of flange 8.1 near the above-listed air duct of flange 8.1 bottoms.
Flange 9.1 is arranged at air bearing 9 bottoms down of the present invention, the axis body 9.2 on flange 9.1 tops, there is the axially extending bore 9.3 that connects flange 9.1 and axis body 9.2 center of bearing, axis body 9.2 is provided with radial air feed path 9.4, the air return flow line 9.5 that communicates with radial air feed path 9.4 is arranged in the axis body 9.2, be provided with O-ring seal 9.6 more than the middle part of axis body 9.2 peripheries, and the middle part is provided with cooling water circulating slot 9.8 to have down O-ring seal 9.7 in the axis body 9.2 between last O-ring seal 9.6 and the following O-ring seal 9.7.
Rotating shaft 7 of the present invention has the axis body 7.2 of tape spool to through hole 7.1, axis body 7.2 afterbodys have flange 7.3, axis body 7.2 middle part outer surfaces have copper mouse cage 7.4, be provided with sliding sleeve 7.5 in the head of axially extending bore 7.1, be fixed with gland 7.6 in the sliding sleeve 7.5, gland 7.6 is the cylinder of a hollow, there is the head of a projection its lower surface, gland 7.6 heads are in the holder 7.7 afterbodys top that is fixed on axially extending bore 7.1 heads, 7.7 of gland 7.6 and holders are provided with disk spring 7.8, the afterbody of the bottom of disk spring 7.8 and holder 7.7 fixes, and the lower surface of top and gland 7.6 fixes; Gland 7.6 central shafts are fixed with the hollow screw 7.10 of tape spool to through hole 7.9 to locating to run through, and hollow screw 7.10 heads fix with chuck 7.11 afterbodys that are housed in the holder 7.7.
Chuck 11 of the present invention has chuck bar 11.1, chuck bar 11.1 front ends are fixed with changeover portion 11.2, changeover portion 11.2 front ends are fixed with circular cone clamp 11.3, and there is axially extending bore 11.4 chuck 11 inside, and circular cone clamp 11.3 is made of the leading portion 11.3.2 of the back segment 11.3.1 of expansion forward and contraction forward; The back segment 11.3.1 of the chuck bar 11.1 of chuck 11, changeover portion 11.2, circular cone clamp 11.3 is housed among the chuck 7.6; Circular cone clamp 11.3 ends are to changeover portion 11.2, four axial cut-outs grooves 11.6 that circumference is equally spaced and communicates with two radial direction through hole 11.5 at changeover portion 11.2 rear portions, and intersect in the axle center of two radial direction through hole 11.5 in the changeover portion 11.2.
Cylinder 10 of the present invention has cylinder body 10.1, the cylinder top cover 10.2 that one side band air supply hole is arranged, cylinder body 10.1 bottoms are fixed with Connection Block 10.3, Connection Block 10.3 inner bottom surface have cooling-water duct 10.13, the axial centre place is fixed with push rod 10.11, the center of cylinder top cover 10.2 is provided with cavity 10.4, in cylinder body 10.1, be provided with upper strata air chamber 10.5, be provided with the axial big piston 10.6 in upper strata in the upper strata air chamber 10.5, Connection Block 10.3 upper strata cavitys and cylinder body 10.1 lower surfaces constitute lower floor's air chamber 10.7, be provided with the axial big piston 10.8 of lower floor in lower floor's air chamber 10.7, be provided with axial back-moving spring 10.9 between the upper surface of lower floor axial big piston 10.8 bottom surfaces and Connection Block 10.3 cavitys, axial centre place between two big pistons is penetrated with the push-rod handle 10.11.1 of tape spool to central blind hole 10.10, blind hole 10.10 heads are on lower floor axial big piston 10.8 upper surfaces, be provided with the radial direction through hole 10.11.1.1 that runs through push-rod handle 10.11.1 at blind hole 10.10 heads, the bottom of push-rod handle 10.11.1 is fixed with valve piston 10.12 and is arranged on the axial big piston 10.8 of lower floor, the bottom surface that is provided with a step 10.13 and the axial big piston 10.8 of lower floor between the body of rod 10.11.2 of push-rod handle 10.11.1 and push rod 10.11 joins, body of rod 10.11.2 bottom is provided with radial direction through hole 10.11.2.1, body of rod 10.11.2 head shaft is provided with the blind hole 10.11.2.2 that communicates with radial direction through hole 10.11.2.1 to the center, blind hole 10.11.2.2 opening is located at body of rod 10.11.2 end, is positioned on the hollow screw 7.10 of assembling back rotating shaft 7 inner glands 7.6.
Claims (6)
1, a kind of air floated high speed electric mandrel, it has comprised stator, the air thrust bearing, Connection Block, the gap division board, drill bit is characterized in that including the hydronic body of water, Connection Block is two independent fully parts that can separate with body, body has overcoat, the interior cover of tape spool to through hole is arranged, interior cover and overcoat interference fit, the interior cover outside is provided with the spirality tank from top to bottom, and interior cover inside is provided with independently axial air feed path and independently axial cooling-water duct; The upper and lower of interior cover inwall is respectively equipped with the radial air through hole that communicates with axial air passage, and the radially cooling water through hole that communicates with axial cooling-water duct; The inside, last top of interior cover is provided with the cooling water feed path that communicates with the spirality tank, and the cooling water return flow line, and interior cover inwall bottom is provided with a radially cooling water through hole that communicates with the spirality tank of interior cover outer lower portion; Have water hydronic outside shaft circumference, be provided with on air bearing and following air bearing, the rotating shaft that can lay down the hollow of drill bit device is automatically arranged, the cylinder that can lay down the rotating shaft of drill bit device is automatically arranged, the flange portion of last air bearing and following air bearing is fixed on body upper edge and lower edge respectively, on, on the axis body portion of following air bearing is arranged in the body respectively, the bottom, between last air bearing and the following air bearing stator is arranged, in last air bearing, following air bearing and stator intermediate throughholes place are provided with rotating shaft, last air bearing flange upper surface is fixed with the gap division board, division board top, gap is fixed with the air thrust bearing, the push rod of cylinder is arranged among the rotating shaft, and chuck is contained in the holder of rotating shaft.
2, a kind of air floated high speed electric mandrel according to claim 1, it is characterized in that flange is arranged at the air bearing top, axis body is arranged at the flange bottom, there is the axially extending bore that connects flange and axis body the center of bearing, axis body is provided with the radial air feed path, the air return flow line that communicates with the radial air feed path is arranged in the axis body, be provided with O-ring seal more than the middle part of axis body periphery, and the middle part is provided with the cooling water circulating slot to have down O-ring seal in the axis body between last O-ring seal and the following O-ring seal; Flange has by spaced apart eight of certain distance and is parallel to axial air feed path; Axis body communicates with the air feed path of flange near the above-listed air duct of flange bottom.
3, a kind of air floated high speed electric mandrel according to claim 1, it is characterized in that flange is arranged at the air bearing bottom down, the axis body on flange top, there is the axially extending bore that connects flange and axis body the center of bearing, axis body is provided with the radial air feed path, the air return flow line that communicates with the radial air feed path is arranged in the axis body, be provided with O-ring seal more than the middle part of axis body periphery, and the middle part is provided with the cooling water circulating slot to have down O-ring seal in the axis body between last O-ring seal and the following O-ring seal.
4, a kind of air floated high speed electric mandrel according to claim 1, it is characterized in that rotating shaft has the axis body of axially extending bore, the axis body afterbody has flange, axis body middle part outer surface has the copper mouse cage, is provided with sliding sleeve in the axially extending bore, is fixed with gland in the sliding sleeve, gland is the cylinder of a hollow, there is the head of a projection its lower surface, and the gland head is in the holder afterbody top that is fixed on the axially extending bore head, is provided with disk spring between gland and holder; The gland central shaft is fixed with the hollow screw of tape spool to through hole to locating to run through.
5, a kind of air floated high speed electric mandrel according to claim 1, it is characterized in that chuck has the chuck bar, chuck bar front end is fixed with changeover portion, and the changeover portion front end is fixed with the circular cone clamp, there is axially extending bore chuck inside, and the circular cone clamp is made of the leading portion of the back segment of expansion forward and contraction forward; The back segment of the chuck bar of chuck, changeover portion, circular cone clamp is housed among the chuck; Circular cone clamp end is to changeover portion, and intersect in the axle center of two radial direction through hole in four the axial cut-outs grooves that circumference is equally spaced and communicates with two radial direction through hole at changeover portion rear portion, changeover portion.
6, a kind of air floated high speed electric mandrel according to claim 1, it is characterized in that cylinder has cylinder body, the cylinder top cover that one side band air supply hole is arranged, inferior part of the cylinder block is fixed with Connection Block, the Connection Block inner bottom surface has cooling-water duct, cylinder axis is fixed with push rod to the center, the center of cylinder top cover is provided with cavity, in cylinder body, be provided with the upper strata air chamber, be provided with the axial big piston in upper strata in the air chamber of upper strata, Connection Block upper strata cavity and cylinder body lower surface constitute lower floor's air chamber, be provided with the axial big piston of lower floor in lower floor's air chamber, be provided with axial back-moving spring between the upper surface of lower floor axial big piston bottom surface and Connection Block cavity, axial centre place between two big pistons is penetrated with the push-rod handle of tape spool to central blind hole, the blind hole head is on lower floor axial big piston upper surface, be provided with the radial direction through hole that runs through push-rod handle at the blind hole head, the bottom of push-rod handle is fixed with valve piston and is arranged on the axial big piston of lower floor, the bottom surface that is provided with the axial big piston of a step and lower floor between the body of rod of push-rod handle and push rod joins, push rod body of rod bottom is provided with radial direction through hole, body of rod head shaft is provided with the blind hole that communicates with radial direction through hole to the center, and the blind hole opening is located at body of rod end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101242643A CN100427250C (en) | 2006-12-18 | 2006-12-18 | Air floated high speed electric mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101242643A CN100427250C (en) | 2006-12-18 | 2006-12-18 | Air floated high speed electric mandrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1974085A CN1974085A (en) | 2007-06-06 |
| CN100427250C true CN100427250C (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101242643A Active CN100427250C (en) | 2006-12-18 | 2006-12-18 | Air floated high speed electric mandrel |
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| CN (1) | CN100427250C (en) |
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| 气静压轴承及其在电主轴中的应用. 商顺德.轴承，第/卷第4期. 2006 * |
| 钻、铣削主轴刀具夹紧方式及自动松拉刀系统. 商顺德，黄昆. 现代零部件，第/卷第12期. 2005 |
| 钻、铣削主轴刀具夹紧方式及自动松拉刀系统. 商顺德，黄昆. 现代零部件，第/卷第12期. 2005 * |
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| CN1974085A (en) | 2007-06-06 |
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