CN103009075B - Damping follow rest for turning slender axle - Google Patents
Damping follow rest for turning slender axle Download PDFInfo
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- CN103009075B CN103009075B CN201210566466.9A CN201210566466A CN103009075B CN 103009075 B CN103009075 B CN 103009075B CN 201210566466 A CN201210566466 A CN 201210566466A CN 103009075 B CN103009075 B CN 103009075B
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- damping sleeve
- damping
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- rest
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Abstract
The invention discloses a damping follow rest for turning a slender axle. The damping follow rest comprises a lower support seat and an upper support seat, wherein the upper support seat is matched with the lower support seat, the upper support seat and the lower support seat form a cylindrical hollow cavity structure, the inside of the hollow cavity is sheathed with a fixing sleeve, the inside of the fixing sleeve is provided with a damping sleeve which is provided with an inner hollow structure, the damping sleeve is in taper fit with the fixing sleeve, one larger-diameter end of the damping sleeve is provided with a spring, the spring is fixedly arranged in the fixing sleeve by an end cap, and the spring acts on the large-diameter end surface of the damping sleeve through a gasket. The damping follow rest has the advantages that the vibration is basically eliminated, so the influence caused by the abrasion of the damping sleeve is eliminated; the abrasion speed of an inner hole of the damping sleeve can be reduced by coolant, so a purpose of reducing the abrasion of the damping sleeve is realized; the use specifications of the support seats are reduced, and the material usage amount and the processing amount of the fixing sleeve are reduced, so a purpose of saving energy is realized; the processing size and the shape tolerance of a workpiece are ensured, and the qualified rate is improved; and the processing cost is effectively reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of machine tools, specifically refer to a kind of vibration damping follow-rest of turning slender axles.
Background technology
The processing of slender axles is always one of difficult point in mechanical industry, and its Major Difficulties is the rigidity extreme difference of workpiece, under the effect of cutting force, easily produce vibration, causes surface of the work coarse, and size and form tolerance are difficult to ensure; Next is aggravation tool wear, causes cutter tipping phenomenon, the possibility even causing workpiece to scrap, has a strong impact on production efficiency and benefit.
The method that current processing slim axle is conventional uses some brace type follow-rest, follow-rest is the servicing unit of radial support rotational workpieces, add man-hour, move axially along workpiece together with cutter, reduce cutting speed and the amount of feeding, adopt less cutting depth, and increase the centre frame quantity supporting workpiece, but these common technologies thoroughly cannot eliminate the oscillation phenomenon in processing.
Look into newly through technology, also there is no a kind of method and apparatus preferably up to now, effectively can eliminate the oscillation phenomenon that slender axles occur in process.
Summary of the invention
The object of the present invention is to provide a kind of vibration damping follow-rest of turning slender axles, the basic vibration eliminated in thin and long shafts process, improves the running accuracy of workpiece, thus improves workpiece surface quality.
Object of the present invention is achieved through the following technical solutions:
A kind of vibration damping follow-rest of turning slender axles, comprise undersetting, and the upper bracket to mate with undersetting, upper bracket and undersetting form cylindrical cavity structure, in described cavity, be set with fixed cover, are provided with the damping sleeve of inner hollow in fixed cover, damping sleeve and fixed cover pass through taper fit, one end larger at damping sleeve diameter is provided with spring, and spring is fixed in fixed cover by end cap, and is acted on the major diameter end face of damping sleeve by pad.The slide carriage of lathe is provided with support, support is provided with the undersetting of semi-circular cylindrical, undersetting passes through bolt, the connected modes such as buckle are fixedly connected with upper bracket, upper bracket coordinates with undersetting can form cylinder-like structure, its boring, the internal cavities position formed at undersetting and upper bracket is provided with fixed cover, damping sleeve is set with in fixed cover, damping sleeve and fixed cover are taper fit, the tapering size of damping sleeve outside should be able to prevent the inner conical surface of damping sleeve and fixed cover from producing interlocking phenomenon, and then prevent damping sleeve locking workpiece and vexed car phenomenon occurs, the entirety that undersetting is formed with upper bracket, fixed cover, damping sleeve are all coaxial, and the main shaft pivot of this axis and lathe is positioned at same straight line, the major diameter end face of damping sleeve is provided with pad, at the fixed cover end face near pad, end cap is installed, end cap is fixed by screws on fixed cover, between end cap and pad, be provided with spring, spring is in compressive state, and the elastic force of spring passes to damping sleeve by pad, according to the size and the specification that use lathe, determine the height of lathe slide carriage surface to main shaft pivot, and then determine the height value H of follow-rest installation base surface to damping sleeve center, according to by the size of the diameter determination damping sleeve internal diameter of turner part, and then determine the diameter of fixed cover, again according to the diameter of the size design modifying ring of bearing diameter, according to the relative dimensions of assembly relation adjustment remaining parts, lathe tool leans against the little extreme direction exit of damping sleeve, along with constantly carrying out of processing, follow-rest and lathe tool are that synchronous axial feed moves, damping sleeve, under the thrust of spring and the effect of fixed cover inner cone, is embraced on processed axle, forms dynamic location and the similar simply supported beam of coordinating on the one hand support machining shaft, thus improve running accuracy and the bending rigidity of the processed point of workpiece, on the other hand damping is produced to the rotation of machining shaft, essentially eliminate vibration, but reach the object that absorbing shakes, along with the carrying out of processing, damping sleeve endoporus can produce certain wearing and tearing, under the effect of pre-compressed spring thrust, damping sleeve produces certain axial displacement relative to fixed cover, under the effect of fixed cover taper hole, and then auto-compensation is carried out to the wearing and tearing that damping sleeve endoporus produces, eliminate damping sleeve and to wear and tear the impact brought.
Described damping sleeve is provided with opening groove.Further, damping sleeve is provided with an opening groove, opening groove is on the sidewall of damping sleeve, and be communicated with two end faces of damping sleeve, this opening groove shears to be formed on complete damping sleeve, opening groove makes damping sleeve, and it has certain elasticity, so that under the effect of spring thrust, carries out auto-compensation to the wearing and tearing that damping sleeve endoporus produces.
The madial wall of described damping sleeve is provided with cooling oil groove.Further, as a further improvement on the present invention, in process, damping sleeve can be held tightly with surface of the work always, in moving process, certain heat can be produced, in order to be discharged by the heat of friction, the madial wall of damping sleeve is provided with cooling oil groove, by passing into cooling fluid in cooling oil groove, to be discharged by fricative heat in time, reach the object of cooling, cooling fluid can reduce the rate of wear of damping sleeve endoporus simultaneously, reaches the object reducing damping sleeve loss.
Described cooling oil groove distributes in the shape of a spiral.Further, as a further improvement on the present invention, the preferred structure of cooling oil groove is helicoidal structure, it is evenly distributed on damping sleeve inwall, in rotary course, cooling fluid can be moved along cold oil concentrated flow, simultaneously in the process of workpiece movable cooling fluid to be dispersed in the area of surface of the work maximum, effectively can ensure lubricant effect, reduce wear.
Described upper bracket, fixed cover and damping sleeve are provided with the through hole being communicated with damping sleeve inwall and upper bracket ft connection, in this through hole, hose coupling are installed.Further, in order to be suitable for the structure cooling oil groove, by arranging the mode of through hole, making hose coupling that the cooling fluid of outside can be added to cooling oil groove from outside in time, enough continuously, dispelling the heat in time.
The madial wall of described upper bracket and undersetting is provided with two circle shape grooves be parallel to each other, and in this groove, be provided with adjustment ring, described adjustment ring is sleeved on fixed cover outer surface.Further, in order to improve the versatility of upper bracket and undersetting, adjustment ring can be adopted to be embedded in version in circle shape groove, by adopting the adjustment ring of different inner diameters, realize the fixed cover of different inner diameters and the installation of damping sleeve, adapted to the change of damping sleeve, fixed cover size by the size changing adjustment ring, to reduce the use specification of bearing and to reduce material usage and the processing capacity of fixed cover, reach cost-saving object.
Adjustment ring in a described groove is made up of two semi-rings.Further, for the ease of assembling, adopt two semi-loops to form the version of an adjustment ring, after upper bracket is connected by screw rod etc. with undersetting, adjustment ring can be fixed, and when upper bracket and undersetting separate, adjustment ring is also unclamped automatically, is convenient to assembling.
Described damping sleeve adopts the nonmetallic materials such as fabroil or nylon to make.Further, as present invention further optimization, the material of damping sleeve has certain technical requirement, and need to have certain moistness and wearability, need certain intensity simultaneously, preferably the nonmetallic materials such as fabroil, nylon are made.
The length of described damping sleeve is 1.25 ~ 1.8 with the ratio of its internal diameter.Further, it is comparatively suitable that the contact length of damping sleeve and workpiece is decided to be 1.25 to 1.8 times of diameter of work, and namely the length of damping sleeve is 1.25 ~ 1.8 with the ratio of its internal diameter, in this span, the effect that damping sleeve eliminates vibration is best, its frictional resistance is also relatively more reasonable simultaneously, if its ratio is too small, and the DeGrain of vibration damping, if its ratio is excessive, there is no obvious increase after the effect of vibration damping reaches maximum, add the frictional force of workpiece and damping sleeve on the contrary, be unfavorable for producing; This ratio becomes the situation of similar inverse ratio with the diameter of workpiece simultaneously, namely when diameter of work is larger, gets the small value; When diameter of work is less, get higher value.
The present invention compared with prior art, has following advantage and beneficial effect:
The vibration damping follow-rest of a kind of turning slender axles of 1 the present invention, lathe tool leans against the little extreme direction exit of damping sleeve, along with constantly carrying out of processing, follow-rest and lathe tool are that synchronous axial feed moves, damping sleeve is under the thrust of spring and the effect of fixed cover inner cone, embrace on processed axle, form dynamic location and the similar simply supported beam of coordinating to machining shaft on the one hand to support, thus improve running accuracy and the bending rigidity at the processed place of workpiece, on the other hand damping is produced to the rotation of machining shaft, essentially eliminate vibration, but reach the object that absorbing shakes; Along with the carrying out of processing, damping sleeve endoporus can produce certain wearing and tearing, under the effect of pre-compressed spring thrust, damping sleeve produces certain axial displacement relative to fixed cover, under the effect of fixed cover taper hole, and then auto-compensation is carried out to the wearing and tearing that damping sleeve endoporus produces, eliminate damping sleeve and to wear and tear the impact brought;
The vibration damping follow-rest of a kind of turning slender axles of 2 the present invention, the madial wall of damping sleeve is provided with cooling oil groove, by passing into cooling fluid in cooling oil groove, in time fricative heat is discharged, reach the object of cooling, cooling fluid can reduce the rate of wear of damping sleeve endoporus simultaneously, reaches the object reducing damping sleeve loss;
The vibration damping follow-rest of a kind of turning slender axles of 3 the present invention, two semi-loops are adopted to form the version of an adjustment ring, after upper bracket is connected by screw rod etc. with undersetting, adjustment ring can be fixed, and when upper bracket and undersetting divide beginning, adjustment ring is also unclamped automatically, be convenient to assembling, adapted to the change of damping sleeve, fixed cover size by the size changing adjustment ring, to reduce the use specification of bearing and to reduce material usage and the processing capacity of fixed cover, reach cost-saving object;
The vibration damping follow-rest of a kind of turning slender axles of 4 the present invention, can improve the running accuracy of workpiece, ensures processing dimension and the form tolerance of workpiece, improves product percent of pass;
The vibration damping follow-rest of a kind of turning slender axles of 5 the present invention, can strengthen cutting data and tool life, and have self-centering function, so can effectively cut down finished cost, and improving production efficiency.
Accompanying drawing explanation
To be that the present invention is overall partly cut open structural representation along damping sleeve axis to Fig. 1;
To be that the present invention is overall partly cut open right view along hose coupling to Fig. 2;
Fig. 3 is the structural representation of damping sleeve of the present invention;
Fig. 4 is the left view of Fig. 3 of the present invention.
Mark and corresponding parts title in accompanying drawing:
1-damping sleeve, 2-fixed cover, 3-adjustment ring, 4-undersetting, 5-pad, 6-spring, 7-screw, 8-end cap, 9-upper bracket, 10-hose coupling, 11-cools oil groove, 12-opening groove, 13-support.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figures 1 to 4, the vibration damping follow-rest of a kind of turning slender axles of the present invention, the slide carriage of lathe is provided with support 13, support 13 is provided with the undersetting 4 of semi-circular cylindrical, undersetting 4 passes through bolt, connected mode is fixedly connected with upper bracket 9, upper bracket 9 coordinates can form cylinder-like structure with undersetting 4, its boring, the internal cavities position formed at undersetting 4 and upper bracket 9 is provided with fixed cover 2, fixed cover 2 integral outer cylindrically, upper bracket 9 with the madial wall of undersetting 4 are provided with two circle shape grooves be parallel to each other, adjustment ring 3 is installed in this groove, adjustment ring 3 is two semicircular structures, fixed cover 2 outer surface is sleeved on groove match, after upper bracket 9 is connected by screw rod etc. with undersetting 4, adjustment ring 3 can be fixed, when upper bracket 9 and undersetting 4 separate, adjustment ring 3 is also unclamped automatically, be convenient to assembling, fixed cover 2 inside is cone-shaped cavity, damping sleeve 1 is set with in this cone-shaped cavity, damping sleeve 1 and fixed cover are taper fit, the tapering size of damping sleeve 1 outside should be able to prevent the inner conical surface of damping sleeve 1 and fixed cover 2 from producing interlocking phenomenon, and then prevent damping sleeve 1 locking workpiece and vexed car phenomenon occurs, the inner circle of position cylindrical cavity of damping sleeve 1, be provided with cooling oil groove 11 on the sidewalls of the cavities, cooling oil groove 11 is evenly distributed on damping sleeve 1 madial wall, at upper bracket 9, fixed cover 2, and damping sleeve 1 is provided with the through hole being communicated with damping sleeve 1 inwall and upper bracket 9 ft connection, hose coupling 10 is installed in this through hole, damping sleeve 1 is provided with an opening groove 12, opening groove 12 is on the sidewall of damping sleeve 1, and be communicated with two end faces of damping sleeve 1, this opening groove 12 shears to be formed on complete damping sleeve 1, opening groove 12 makes damping sleeve 1, and it has certain elasticity, the entirety that undersetting 4 is formed with upper bracket 9, fixed cover 2, damping sleeve 1 are all coaxial, and the main shaft pivot of this axis and lathe is positioned at same straight line, the major diameter end face of damping sleeve 1 is provided with pad 5, at fixed cover 2 end face near pad 5, end cap 8 is installed, end cap 8 is fixed on fixed cover by screw 7, as conventional fixing means, also the replacements such as bolt can be adopted, between end cap 8 and pad 5, be provided with spring 6, spring 6 is in compressive state, and the elastic force of spring 6 passes to damping sleeve 1 by pad 5, according to the size and the specification that use lathe, determine the height of lathe slide carriage surface to main shaft pivot, and then determine the height value H of follow-rest installation base surface to damping sleeve center, according to by the size of diameter determination damping sleeve 1 internal diameter of turner part, and then determine the diameter of fixed cover 2, again according to the diameter of the size determination adjustment ring 3 of bearing diameter, according to the relative dimensions of assembly relation adjustment remaining parts.
Vibration damping follow-rest using method of the present invention is as follows:
The first step: loaded by damping sleeve 1 in fixed cover 2, is then inserted on processed workpiece;
Second: fixed cover 2 is positioned in adjustment ring 3 by lathe that work piece is installed to;
3rd step: semi-ring and upper bracket 9 on mounting and adjusting ring 3, and connect coolant hose;
4th step: reinstall end cap 8 load pad 5 and spring 6 on damping sleeve 1 large end face after, and fastening with screw 7, but leave the adjustment surplus of about 5mm;
5th step: all the other supplemental support of centering;
6th step: lathe is suspended to neutral, manual dish moves chuck rotational workpieces, beating of table look-up workpiece is beaten at the end face of this follow-rest, excessive if beat, illustrate that damping sleeve is excessively loose, end cap housing screw 7 should be adjusted, increase the compression dynamics of spring 6, meet the demands until beat, have certain resistance when sensation workpiece rotates, but can coil and move as good;
7th step: test run, opens cooling fluid switch, and to add the rotating speed rotational workpieces in man-hour, can observe cooling fluid discharge smoothly, damping sleeve 1 with or without burning phenomenon, damping sleeve 1 and fixed cover 2 whether geo-stationary, whether damping sleeve 1 and machining shaft can relatively rotate;
8th step: get final product processing work after above step completes.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention, every according in technical spirit of the present invention to any simple modification, equivalent variations that above embodiment is done, all fall within protection scope of the present invention.
Claims (8)
1. the vibration damping follow-rest of turning slender axles, comprise undersetting (4), and the upper bracket (9) to mate with undersetting (4), upper bracket (9) and undersetting (4) form cylindrical cavity structure, it is characterized in that: in described cavity, be set with fixed cover (2), the damping sleeve (1) of inner hollow is installed in fixed cover (2), damping sleeve (1) and fixed cover (2) pass through taper fit, in one end that damping sleeve (1) diameter is larger, spring (6) is installed, spring (6) is fixed in fixed cover (2) by end cap (8), and act on the major diameter end face of damping sleeve (1) by pad (5), the madial wall of described damping sleeve (1) is provided with cooling oil groove (11).
2. the vibration damping follow-rest of a kind of turning slender axles according to claim 1, is characterized in that: on described damping sleeve (1), be provided with opening groove (12).
3. the vibration damping follow-rest of a kind of turning slender axles according to claim 1, is characterized in that: described cooling oil groove (11) distributes in the shape of a spiral.
4. the vibration damping follow-rest of a kind of turning slender axles according to claim 1, it is characterized in that: on described upper bracket (9), fixed cover (2) and damping sleeve (1), be provided with the through hole being communicated with damping sleeve (1) inwall and upper bracket (9) ft connection, hose coupling (10) is installed in this through hole.
5. the vibration damping follow-rest of a kind of turning slender axles as claimed in any of claims 1 to 4, it is characterized in that: on the madial wall of described upper bracket (9) with undersetting (4), be provided with two circle shape grooves be parallel to each other, in this groove, be provided with adjustment ring (3), described adjustment ring (3) is sleeved on fixed cover (2) outer surface.
6. the vibration damping follow-rest of a kind of turning slender axles according to claim 5, is characterized in that: the adjustment ring (3) in a described groove is made up of two semi-rings.
7. the vibration damping follow-rest of a kind of turning slender axles as claimed in any of claims 1 to 4, is characterized in that: described damping sleeve (1) adopts fabroil or nylon to make.
8. the vibration damping follow-rest of a kind of turning slender axles as claimed in any of claims 1 to 4, is characterized in that: the length of described damping sleeve (1) is 1.25 ~ 1.8 with the ratio of its internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210566466.9A CN103009075B (en) | 2012-12-25 | 2012-12-25 | Damping follow rest for turning slender axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210566466.9A CN103009075B (en) | 2012-12-25 | 2012-12-25 | Damping follow rest for turning slender axle |
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| CN103009075A CN103009075A (en) | 2013-04-03 |
| CN103009075B true CN103009075B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210566466.9A Active CN103009075B (en) | 2012-12-25 | 2012-12-25 | Damping follow rest for turning slender axle |
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| CN (1) | CN103009075B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107775367B (en) * | 2016-08-26 | 2024-06-07 | 中石化石油工程技术服务有限公司 | Floating box type pipe maintenance support frame |
| CN114101753B (en) * | 2021-12-15 | 2023-09-05 | 唐山市三川钢铁机械制造有限公司 | Horizontal deep hole drilling machine based on particle damping vibration attenuation and damping vibration attenuation design method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095965U (en) * | 1991-06-27 | 1992-02-12 | 重庆大学 | Damper for twisting vibration of rotary shaft |
| DE20310474U1 (en) * | 2002-07-08 | 2003-12-11 | pmh präzisionstechnik heyn GmbH | Rotary end support column for machine tool has rotating clamping ring to center tool and clamp it axially |
| CN2843678Y (en) * | 2005-08-18 | 2006-12-06 | 南京数控机床有限公司 | Bearings-ring style centering holder |
| CN201095040Y (en) * | 2007-07-27 | 2008-08-06 | 南京数控机床有限公司 | Ferrule type center frame |
| CN101428393A (en) * | 2008-12-17 | 2009-05-13 | 合肥工业大学 | Machine tool fluid pressure center frame |
| CN201544041U (en) * | 2009-05-25 | 2010-08-11 | 张震 | Inner cooling follow-rest |
| CN201685105U (en) * | 2010-04-20 | 2010-12-29 | 重庆川东船舶重工有限责任公司 | Centering center rest support |
| CN102000992A (en) * | 2010-11-19 | 2011-04-06 | 天津机辆轨道交通装备有限责任公司 | Bracket for turning elongated conical rod shaft |
-
2012
- 2012-12-25 CN CN201210566466.9A patent/CN103009075B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095965U (en) * | 1991-06-27 | 1992-02-12 | 重庆大学 | Damper for twisting vibration of rotary shaft |
| DE20310474U1 (en) * | 2002-07-08 | 2003-12-11 | pmh präzisionstechnik heyn GmbH | Rotary end support column for machine tool has rotating clamping ring to center tool and clamp it axially |
| CN2843678Y (en) * | 2005-08-18 | 2006-12-06 | 南京数控机床有限公司 | Bearings-ring style centering holder |
| CN201095040Y (en) * | 2007-07-27 | 2008-08-06 | 南京数控机床有限公司 | Ferrule type center frame |
| CN101428393A (en) * | 2008-12-17 | 2009-05-13 | 合肥工业大学 | Machine tool fluid pressure center frame |
| CN201544041U (en) * | 2009-05-25 | 2010-08-11 | 张震 | Inner cooling follow-rest |
| CN201685105U (en) * | 2010-04-20 | 2010-12-29 | 重庆川东船舶重工有限责任公司 | Centering center rest support |
| CN102000992A (en) * | 2010-11-19 | 2011-04-06 | 天津机辆轨道交通装备有限责任公司 | Bracket for turning elongated conical rod shaft |
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