CN101254582A - Self-centering machine tool center bracket system - Google Patents
Self-centering machine tool center bracket system Download PDFInfo
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- CN101254582A CN101254582A CNA200810049266XA CN200810049266A CN101254582A CN 101254582 A CN101254582 A CN 101254582A CN A200810049266X A CNA200810049266X A CN A200810049266XA CN 200810049266 A CN200810049266 A CN 200810049266A CN 101254582 A CN101254582 A CN 101254582A
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Abstract
The invention relates to a self-centered machine tool center support device arranged on guide rails of the main body of a machine tool and capable of automatically aligning centers of long-axis parts and sleeve parts, supporting the parts to be processed, eliminating vibration of cutting tool in cutting process and ensuring the processing accuracy. The self-centered machine tool center support device comprises a support pedestal arranged on rectangular guide rails of the main body of the machine tool, two supporting wheel brackets oppositely arranged on dovetail guide rails of the support pedestal, supporting wheel bracket grooves formed on the supporting wheel bracket, supporting wheel arranged in the supporting wheel bracket grooves, a via-hole formed on the support pedestal, and a left screw and a right screw penetrating in the via-hole through a bearing and connected with each other, wherein the left screw and the right screw have the same profile and pitch and opposite rotation directions; a left nut is arranged on the left thread of the left screw, and a right nut is arranged on the right thread of the right screw; and the left and the right nuts are sandwiched in the groove at the bottom of the supporting wheel brackets. The self-centered machine tool center support device has the advantages of good centering accuracy, high strength, stable operation in poor work condition, simple operation and convenient adjustment.
Description
Technical field
The present invention relates to a kind of being installed on the bed piece guide rail, can aim at the center of longaxones parts and sleeve part automatically, hold part to be processed, eliminate the vibration that cutter causes workpiece in cutting, with guarantee the part to be processed machining accuracy certainly to the lathe center rest device at center.
Background technology
At present, domestic processing to longaxones parts and sleeve part adopts centre frame to carry out aiding support more, centre frame to the centering of part by operative employee's manual operations, time-consuming, take a lot of work, be easy to generate deviation, influence crudy.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the present technology and provide a kind of and align the center automatically by machine driving, two support rollers and workpiece are tangent, hold part, and with its rotation certainly to the lathe center rest device at center.
The object of the present invention is achieved like this: comprise and arrange the bracket base that is installed on the lathe bed rectangular guideway, two roller brackets that positioned opposite is equipped with on the dovetail guide of bracket base, on roller bracket, have the roller bracket groove, in the roller bracket groove, support roller is installed, on bracket base, have a through hole, be installed with left-handed screw mandrel and dextrorotation screw mandrel by bearing in the hole, left-handed screw mandrel and dextrorotation screw mandrel link together, their tooth form, pitch is identical, rotation direction is opposite, on the left hand thread of left-handed screw mandrel, left-handed nut is installed, on the right-handed thread of dextrorotation screw mandrel the right-handed nut is installed, left-handed nut and right-handed nut are clipped in the base channel of roller bracket.
Both sides have the both sides screw that runs through the roller bracket bottom in the base channel of roller bracket, the both sides screw is arranged concentric in this groove, adjusting bolt and tight fixed bolt is installed in respectively in the both sides screw of this groove, adjust the side that bolt withstands on right-handed nut and left-handed nut respectively, be used for centering lathe center, tight fixed bolt is pressed in the opposite side of right-handed nut and left-handed nut respectively, is used for compressing the right-handed nut after the center is determined and left-handed nut makes its location.
The bottom groove width size of roller bracket has 5 millimeters adjustment, compensate for clearance greater than right-handed nut and left-handed nut.
The dovetail guide that roller bracket is installed on bracket base is vertical with machine tool guideway and spindle centerline, by the assembling assurance relative machine tool guideway of roller bracket and the vertical mobile accuracy of spindle centerline and the positional precision of panel.
Support roller comprises support roller, the supporting-roller shaft of support roller is installed by bearing, on roller bracket, have the roller bracket groove of 3 Kato wheel shafts, support roller is installed in the roller bracket groove by supporting-roller shaft, and the cylindrical of support roller is tangent at the both sides and the excircle of workpiece of workpiece, and holds workpiece and rotate with workpiece.
One end of described left-handed screw mandrel is left-handed T shape screw thread, the other end is packed into by bearings in the front aperture of bracket base, one end of dextrorotation screw mandrel is a dextrorotation T shape screw thread, the other end is packed into by bearings in the back stomidium of bracket base, connection between the screw mandrel is by the interference fits string in the axle of two screw mandrel links, hole together, squeezes into pin and fixedly becomes one.
The round nut at the forward and backward two ends of left-handed screw mandrel and dextrorotation screw mandrel is locked in the hole of bracket base.
Bracket base is installed by the assembling of panel, guide rail clip and is guaranteed positional precision and the horizontal accuracy of lathe center rest at bed ways, eliminate the assemblage gap of lathe bed and bracket base by panel, guide rail clip is arranged and is installed on the lower edge of lathe bed rectangular guideway, guarantees the applying of bracket base and lathe bed rectangular guideway in the horizontal direction.
The present invention has the following advantages:
1, accuracy of alignment is good, adapts to diameter all sizes in the 50-5000 scope.
2, have intensity preferably, can smooth working under relatively poor work condition environment.
3, simple to operate, easy to adjust.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a cutaway view of the present invention.
In the drawings, 1 left-handed screw mandrel; 2 bracket bases; 3, roller bracket; 4 support rollers; 5 workpiece; 6 jackscrews; 7 bolts; 8 dextrorotation screw mandrels; 9 panels; 10 pressing plates; 11 left-handed nuts; 12 right-handed nuts; 13 lathe beds; 14 pressing plates; 15 dovetail panels.
The specific embodiment
As Fig. 1, shown in 2, the present invention includes the bracket base of arranging on the rectangular guideway that is installed in lathe bed 13 2, two roller brackets 3 that positioned opposite is equipped with on the dovetail guide of bracket base 2, on roller bracket 3, have the roller bracket groove, support roller 4 is installed in the roller bracket groove, on bracket base 2, have a through hole, be installed with left-handed screw mandrel 1 and dextrorotation screw mandrel 8 by bearing in the hole, left-handed screw mandrel 1 and dextrorotation screw mandrel 8 link together, their tooth form, pitch is identical, rotation direction is opposite, left-handed nut 11 is installed on the left hand thread of left-handed screw mandrel 1, right-handed nut 12 is installed on the right-handed thread of dextrorotation screw mandrel 8, and left-handed nut 11 and right-handed nut 12 are clipped in the base channel of roller bracket 3.Both sides have the both sides screw that runs through the roller bracket bottom in the base channel of roller bracket 3, the both sides screw is arranged concentric in this groove, adjusting bolt 7 and tight fixed bolt 6 is installed in respectively in the both sides screw of this groove, adjust the side that bolt withstands on right-handed nut 12 and left-handed nut 11 respectively, be used for centering lathe center, tight fixed bolt is pressed in the opposite side of right-handed nut 12 and left-handed nut 11 respectively, is used for compressing right-handed nut 12 after the center is determined and left-handed nut 11 makes its location.The bottom groove width size of roller bracket 3 has 5 millimeters adjustment, compensate for clearance greater than right-handed nut 12 and left-handed nut 11.
The dovetail guide that roller bracket 3 is installed on bracket base 2 is vertical with machine tool guideway and spindle centerline, by assembling assurance roller bracket 3 relative machine tool guideway and the vertical mobile accuracy of spindle centerline and the positional precisions of panel 15.
Bracket base 2 is installed by the assembling of panel 9, guide rail clip 10,14 and is guaranteed positional precision and the horizontal accuracy of lathe center rest at bed ways, eliminate the assemblage gap of lathe bed 13 and bracket base 2 by panel 9, guide rail clip 10,14 is arranged and is installed on the lower edge of lathe bed rectangular guideway, guarantees the applying of bracket base 2 and lathe bed rectangular guideway in the horizontal direction.
One end of described left-handed screw mandrel 1 is left-handed T shape screw thread, the other end is packed into by bearings in the front aperture of bracket base 2, one end of dextrorotation screw mandrel 8 is dextrorotation T shape screw threads, the other end is packed into by bearings in the back stomidium of bracket base 2, connection between the screw mandrel is by the interference fits string in the axle of two screw mandrel links, hole together, squeezes into pin and fixedly becomes one.
Opposite, the middle T type threaded screw rod that connects by pin of a left and right sides rotation direction promptly is installed in the hole of bracket base 2, the screw mandrel two ends are fixed on screw mandrel in the saddle hole by pair of bearings and garden nut respectively, the left-handed part string of screw mandrel has left-handed nut 11, dextrorotation partly to go here and there right-handed nut 12, two screws are arranged in the base channel of two roller brackets 3, two roller brackets 3 are oppositely disposed on the dovetail guide on saddle top for same part, the both sides of roller bracket 3 base channel are furnished with two bolts, stay bolt is for adjusting bolt 7, and lag bolt is a tight fixed bolt 6.The round nut at the forward and backward two ends of left-handed screw mandrel 1 and dextrorotation screw mandrel 8 is locked in the hole of bracket base 2.
Support roller 4 comprises support roller, by the supporting-roller shaft that bearing is installed support roller, be assembled by support roller, supporting-roller shaft and bearing.Have the roller bracket groove of 3 Kato wheel shafts on roller bracket 3, support roller 4 is installed in the roller bracket groove by supporting-roller shaft, and the cylindrical of support roller is tangent at the both sides and the excircle of workpiece of workpiece 5, and holds workpiece 5 and rotate with workpiece.The position of roller bracket groove is calculated according to the excursion of diameter of work size, through how much and is designed.Two support rollers are same parts, positioned opposite, and supporting-roller shaft is stuck in the draw-in groove of two roller brackets.
As shown in the figure, adjust the disposable machine tool chief axis center of finding accurately of stay bolt during installation, compress lag bolt, make the fixed-site of left and right sides spin nut, shake screw mandrel, pallet body will be with support roller with respect to the lathe center do relative to or rightabout linearity move.
Bracket base 2 is basic parts of center rest, is arranged on the rectangular guideway of lathe bed 13.Because the position of bracket base 2 changes and the change of sliding on guide rail with the length of workpiece, so the vertical direction at bracket base 2 has two guide rail clip spares 10, part 14, be pressed in the lower edge of guide rail, horizontal direction then has panel 9 warranty elements 2 to be close to the slip of bed ways face and guarantees mobile accuracy, part 1 is left-handed screw mandrel, its end is left-handed T shape screw thread, the other end is packed into by bearings in the front aperture of part 2, part 8 is the dextrorotation screw mandrel, its end is a dextrorotation T shape screw thread, and the other end is packed into by bearings in the back stomidium of part 2.
Connection between the screw mandrel is by the interference fits string in the axle of two screw mandrel links, hole together, squeezes into pin then and fixes.The screw mandrel that becomes one.Round nut locking is loaded onto at forward and backward two ends, and screw mandrel promptly is fixed in the hole of part 2.String has part 11 left-handed nuts on the left hand thread of screw mandrel, and string has part 12 right-handed nuts on the right-handed thread, turn screw mandrel spare 11, part 12 will under the different threaded function of rotation direction, do relative to or rightabout moving.Part 3 is oppositely disposed on the dovetail guide of part 2 for two of the roller bracket same form, adjusts the linearity of doing on the dovetail guide direction in the gap between guideways by dovetail panel 15 and moves.Part 11, part 12 are clipped in respectively in the groove of part 3 bottom surfaces, groove both sides arranged concentric has screw, the groove width size is greater than the width dimensions of part 11, part 12, there are 5 millimeters to mend reward, adjusting play, part 7 bolts, part 6 jackscrews are arranged in the screw of groove both sides, and part 7 withstands on a side of part 11, part 12, and part 6 withstands on the opposite side of part 11, part 12, just can adjust, determine the distance at 3 pairs of centers of part by adjustment part 7 bolts, tighten part 6 jackscrews and add and be equipped with cap and compress.Just fixed the exact position of roller bracket to the center.Part 3 tops have 3 skewed slots to be used to block the axle of part 4 support rollers, the excursion of all relative diameter of work of each groove, and three grooves have been contained all interior sizes of diameter of work φ 50-φ 5000mm scope.Two of the part 4 support roller same form, the axle and the wheel of part 4 are that two bodies are supported by pair of bearings, spool are stuck in the groove on part 3 tops, the cylindrical and the excircle of workpiece of wheel are tangent, in the both sides of workpiece 5, and hold workpiece 5 and rotate with workpiece.
Claims (8)
1, a kind of from lathe center rest device to the center, comprise and arrange the bracket base (2) that is installed on the lathe bed rectangular guideway, it is characterized in that: two roller brackets (3) that positioned opposite is equipped with on the dovetail guide of bracket base (2), on roller bracket (3), have the roller bracket groove, support roller (4) is installed in the roller bracket groove, on bracket base (2), have a through hole, be installed with left-handed screw mandrel (1) and dextrorotation screw mandrel (8) by bearing in the hole, left-handed screw mandrel (1) and dextrorotation screw mandrel (8) link together, their tooth form, pitch is identical, rotation direction is opposite, left-handed nut (11) is installed on the left hand thread of left-handed screw mandrel (1), right-handed nut (12) is installed on the right-handed thread of dextrorotation screw mandrel (8), and left-handed nut (11) and right-handed nut (12) are clipped in the base channel of roller bracket (3).
2, described according to right 1 from lathe center rest device to the center, it is characterized in that: both sides have the both sides screw that runs through the roller bracket bottom in the base channel of roller bracket (3), the both sides screw is arranged concentric in this groove, adjusting bolt (7) and tight fixed bolt (6) is installed in respectively in the both sides screw of this groove, adjust the side that bolt withstands on right-handed nut (12) and left-handed nut (11) respectively, be used for centering lathe center, tight fixed bolt is pressed in the opposite side of right-handed nut (12) and left-handed nut (11) respectively, is used for compressing right-handed nut (12) after the center is determined and left-handed nut (11) makes its location.
3, described from the lathe center rest device to the center according to right 1, it is characterized in that: the bottom groove width size of roller bracket (3) has 5 millimeters adjustment, compensate for clearance greater than right-handed nut (12) and left-handed nut (11).
4, described according to right 1 from lathe center rest device to the center, it is characterized in that: it is vertical with machine tool guideway and spindle centerline to go up the dovetail guide that roller bracket (3) is installed at bracket base (2), by the relative machine tool guideway of assembling assurance roller bracket (3) and the vertical mobile accuracy of spindle centerline and the positional precision of panel (15).
5, described according to right 1 from lathe center rest device to the center, it is characterized in that: support roller (4) comprises support roller, the supporting-roller shaft of support roller is installed by bearing, on roller bracket (3), have the roller bracket groove of 3 Kato wheel shafts, support roller (4) is installed in the roller bracket groove by supporting-roller shaft, the cylindrical of support roller is tangent at the both sides and the excircle of workpiece of workpiece (5), and holds workpiece (5) and rotate with workpiece.
6, described according to right 1 from lathe center rest device to the center, it is characterized in that: an end of described left-handed screw mandrel (1) is left-handed T shape screw thread, the other end is packed into by bearings in the front aperture of bracket base (2), one end of dextrorotation screw mandrel (8) is a dextrorotation T shape screw thread, the other end is packed into by bearings in the back stomidium of bracket base (2), connection between the screw mandrel is by the interference fits string in the axle of two screw mandrel links, hole together, squeezes into pin and fixedly becomes one.
7, described from the lathe center rest device to the center according to right 1, it is characterized in that: the round nut at the forward and backward two ends of left-handed screw mandrel (1) and dextrorotation screw mandrel (8) is locked in the hole of bracket base (2).
8, described according to right 1 from lathe center rest device to the center, it is characterized in that: bracket base (2) is installed by the assembling of panel (9), guide rail clip (10,14) and is guaranteed positional precision and the horizontal accuracy of lathe center rest at bed ways, eliminate the assemblage gap of lathe bed (13) and bracket base (2) by panel (9), guide rail clip (10,14) is arranged and is installed on the lower edge of lathe bed rectangular guideway, guarantees the applying of bracket base (2) and lathe bed rectangular guideway in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810049266A CN100588498C (en) | 2008-02-26 | 2008-02-26 | Self-centering machine tool center bracket system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810049266A CN100588498C (en) | 2008-02-26 | 2008-02-26 | Self-centering machine tool center bracket system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101254582A true CN101254582A (en) | 2008-09-03 |
| CN100588498C CN100588498C (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810049266A Expired - Fee Related CN100588498C (en) | 2008-02-26 | 2008-02-26 | Self-centering machine tool center bracket system |
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| Country | Link |
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| CN (1) | CN100588498C (en) |
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