CN103009075A - Damping follow rest for turning slender axle - Google Patents
Damping follow rest for turning slender axle Download PDFInfo
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- CN103009075A CN103009075A CN2012105664669A CN201210566466A CN103009075A CN 103009075 A CN103009075 A CN 103009075A CN 2012105664669 A CN2012105664669 A CN 2012105664669A CN 201210566466 A CN201210566466 A CN 201210566466A CN 103009075 A CN103009075 A CN 103009075A
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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 always is one of difficult point in the mechanical industry, and its Major Difficulties is the rigidity extreme difference of workpiece, produces easily vibration under the effect of cutting force, causes surface of the work coarse, and size and form tolerance are difficult to guarantee; Next is the aggravation tool wear, causes cutter tipping phenomenon, even the possibility that causes workpiece to scrap, and has a strong impact on production efficiency and benefit.
The method that the processing slim axle is commonly used at present is to use some brace type follow-rest, follow-rest is the servicing unit of radial support rotational workpieces, add man-hour, move axially along workpiece with cutter, reduce cutting speed and the amount of feeding, adopt less cutting depth, and increase the centre frame quantity that supporting workpiece is used, but these common technologies can't thoroughly be eliminated the oscillation phenomenon in the processing.
Look into newly through technology, also do not have up to now a kind of preferably method and apparatus, can effectively 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 vibration in the elimination thin and long shafts process improves the running accuracy of workpiece, thereby improves workpiece surface quality.
Purpose 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 with the upper bracket of undersetting coupling, upper bracket and undersetting consist of the cylindrical cavity structure, are set with fixed cover in described cavity, and the damping sleeve of inner hollow is installed in fixed cover, damping sleeve and fixed cover pass through taper fit, an end larger at the damping sleeve diameter is equipped with spring, and spring is fixed in the fixed cover by end cap, and acts on by pad on the major diameter end face of damping sleeve.Slide carriage at lathe is equipped with support, the undersetting of semicircle tubular is installed at support, pass through bolt on the undersetting, the connected modes such as buckle are fixedly connected with upper bracket, upper bracket cooperates with undersetting can form cylinder-like structure, its boring, internal cavities position in undersetting and upper bracket formation is equipped with fixed cover, in fixed cover, be set with damping sleeve, damping sleeve and fixed cover are taper fit, the tapering size of damping sleeve outside should be able to prevent that the inner conical surface of damping sleeve and fixed cover from producing the interlocking phenomenon, and then prevents damping sleeve locking workpiece and vexed car phenomenon occurs; Undersetting is all coaxial with integral body, fixed cover, damping sleeve that upper bracket consists of, 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 the fixed cover, between end cap and pad spring is installed, spring is in compressive state, and the elastic force of spring passes to damping sleeve by pad; According to size and the specification of using lathe, determine that lathe slide carriage surface is to the height of main shaft pivot, and then definite follow-rest installation base surface is to the height value H at damping sleeve center, according to the size of being determined the damping sleeve internal diameter by the diameter of turner part, and then the diameter of definite fixed cover, according to the diameter of the size design adjustment ring of bearing diameter, adjust the relative dimensions of remaining parts according to assembly relation again; Lathe tool leans against damping sleeve small end direction exit, along with constantly carrying out of processing, follow-rest and lathe tool are that synchronous axial feed moves, damping sleeve is embraced on processed axle under the effect of the thrust of spring and fixed cover inner cone, on the one hand machining shaft is formed movingly location and the support of similar simply supported beam, thereby running accuracy and the bending rigidity of the processed point of workpiece have been improved, on the other hand the rotation of machining shaft is produced damping, elimination vibration, but reach the purpose that absorbing is shaken; Carrying out along with processing, the damping sleeve endoporus can produce certain wearing and tearing, under the effect of pre-compressed spring thrust, the relative fixed cover of damping sleeve produces certain axial displacement, under the effect of fixed cover taper hole, and then the wearing and tearing that the damping sleeve endoporus produces are carried out auto-compensation, eliminated the impact that the damping sleeve wearing and tearing bring.
Be provided with the opening groove at described damping sleeve.Further, be provided with an opening groove at damping sleeve, the opening groove is on the sidewall of damping sleeve, and two end faces that are communicated with damping sleeve, this opening groove is to shear at complete damping sleeve to form, the opening groove makes damping sleeve, and it has certain elasticity, so that under the effect of spring thrust, auto-compensation is carried out in the wearing and tearing that the damping sleeve endoporus produces.
Be provided with the cooling oil groove on the madial wall of described damping sleeve.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, can produce certain heat, for the heat of friction is discharged, madial wall at damping sleeve is provided with the cooling oil groove, by in the cooling oil groove, passing into cooling fluid, in order in time fricative heat is discharged, reach the purpose of cooling, cooling fluid can reduce the rate of wear of damping sleeve endoporus simultaneously, reaches the purpose that reduces the 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 the damping sleeve inwall, in rotary course, cooling fluid can be moving along the cold oil concentrated flow, and while cooling fluid in the process of workpiece movable is dispersed in the area maximum of surface of the work, can effectively guarantee to reduce wear lubricant effect.
Be provided with connection damping sleeve inwall and the outside through hole that is communicated with of upper bracket at described upper bracket, fixed cover and damping sleeve, in this through hole, hose coupling be installed.Further, in order to be suitable for cooling off the structure of oil groove, by the mode of through hole is set, so that hose coupling can add to the cooling oil groove, in time heat radiation in time, enough continuously with the cooling fluid of outside from the outside.
Madial wall at described upper bracket and undersetting is provided with two circle shape grooves that are parallel to each other, and in this groove adjustment ring is installed, and described adjustment ring is sleeved on the fixed cover outer surface.Further, in order to improve the versatility of upper bracket and undersetting, can adopt adjustment ring to be embedded in the interior version of circle shape groove, by adopting the adjustment ring of different inner diameters, realize the installation of fixed cover and the damping sleeve of different inner diameters, adapt to the variation of damping sleeve, fixed cover size by the size that changes adjustment ring, with the use specification that reduces bearing and material usage and the processing capacity that reduces fixed cover, reach the purpose of saving cost.
Adjustment ring in the described groove is made of two semi-rings.Further, for the ease of assembling, adopts two semi-loops to consist of the version of an adjustment ring, upper bracket is connected screw rod etc. and connects with undersetting after, adjustment ring can be fixed, and when upper bracket and undersetting separated, adjustment ring was also unclamped automatically, is convenient to assemble.
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 specification requirement, need to have certain moistness and wearability, and needing simultaneously has certain intensity, and 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, it is best that damping sleeve is eliminated the effect of vibrating, its frictional resistance is also more reasonable simultaneously, if its ratio is too small, and the DeGrain of vibration damping, if its ratio is excessive, the effect of vibration damping there is no obvious increase after reaching maximum, has increased on the contrary the frictional force of workpiece and damping sleeve, is 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 hour, 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 damping sleeve small end direction exit, along with constantly carrying out of processing, follow-rest and lathe tool are that synchronous axial feed moves, damping sleeve is under the effect of the thrust of spring and fixed cover inner cone, embrace on processed axle, on the one hand machining shaft is formed movingly location and the support of similar simply supported beam, thereby running accuracy and the bending rigidity at the processed place of workpiece have been improved, on the other hand the rotation of machining shaft produced damping, elimination vibration, but reach the purpose that absorbing is shaken; Carrying out along with processing, the damping sleeve endoporus can produce certain wearing and tearing, under the effect of pre-compressed spring thrust, the relative fixed cover of damping sleeve produces certain axial displacement, under the effect of fixed cover taper hole, and then the wearing and tearing that the damping sleeve endoporus produces are carried out auto-compensation, eliminated the impact that the damping sleeve wearing and tearing bring;
The vibration damping follow-rest of a kind of turning slender axles of 2 the present invention, madial wall at damping sleeve is provided with the cooling oil groove, by in the cooling oil groove, passing into cooling fluid, in order in time fricative heat is discharged, reach the purpose of cooling, cooling fluid can reduce the rate of wear of damping sleeve endoporus simultaneously, reaches the purpose that reduces the damping sleeve loss;
The vibration damping follow-rest of a kind of turning slender axles of 3 the present invention, adopt two semi-loops to consist of the version of an adjustment ring, upper bracket is connected screw rod etc. and connects with undersetting after, adjustment ring can be fixed, and when upper bracket and undersetting divide beginning, adjustment ring is also unclamped automatically, be convenient to assembling, adapt to the variation of damping sleeve, fixed cover size by the size that changes adjustment ring, with the use specification that reduces bearing and material usage and the processing capacity that reduces fixed cover, reach the purpose of saving cost;
The vibration damping follow-rest of a kind of turning slender axles of 4 the present invention can improve the running accuracy of workpiece, guarantees 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 has the self-centering function, so can effectively cut down finished cost improving production efficiency.
Description of drawings
What Fig. 1 was integral body of the present invention along the damping sleeve axis partly cuts open structural representation;
What Fig. 2 was integral body of the present invention along hose coupling partly cuts open right view;
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 the accompanying drawing:
The 1-damping sleeve, the 2-fixed cover, the 3-adjustment ring, the 4-undersetting, the 5-pad, the 6-spring, the 7-screw, the 8-end cap, the 9-upper bracket, the 10-hose coupling, 11-cools off oil groove, 12-opening groove, 13-support.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figures 1 to 4, the vibration damping follow-rest of a kind of turning slender axles of the present invention, slide carriage at lathe is equipped with support 13, the undersetting 4 of semicircle tubular is installed at support 13, pass through bolt on the undersetting 4, connected mode is fixedly connected with upper bracket 9, upper bracket 9 cooperates with undersetting 4 can form cylinder-like structure, its boring, internal cavities position in undersetting 4 and upper bracket 9 formations is equipped with fixed cover 2, fixed cover 2 integral outer are cylindric, madial wall at upper bracket 9 and undersetting 4 is provided with two circle shape grooves that are parallel to each other, adjustment ring 3 is installed in this groove, adjustment ring 3 is two semicircular structures, be complementary with groove and be sleeved on fixed cover 2 outer surfaces, upper bracket 9 are connected with undersetting connect by screw rod etc. after, adjustment ring 3 can be fixed, when upper bracket 9 and undersetting 4 separately the time, adjustment ring 3 is also unclamped automatically, is convenient to assembling; Fixed cover 2 inside are cone-shaped cavity, in this cone-shaped cavity, be set with damping sleeve 1, damping sleeve 1 is taper fit with fixed cover, the tapering size of damping sleeve 1 outside should be able to prevent that the inner conical surface of damping sleeve 1 and fixed cover 2 from producing the interlocking phenomenon, and then prevent damping sleeve 1 locking workpiece and vexed car phenomenon occurs, damping sleeve 1 inner circle of position column cavity, sidewall at cavity is provided with cooling oil groove 11, cooling oil groove 11 is evenly distributed on damping sleeve 1 madial wall, at upper bracket 9, fixed cover 2, and be provided with on the damping sleeve 1 and be communicated with the through holes that damping sleeve 1 inwall is communicated with upper bracket 9 outsides, hose coupling 10 is installed in this through hole, be provided with an opening groove 12 at damping sleeve 1, opening groove 12 is on the sidewall of damping sleeve 1, and two end faces that are communicated with damping sleeve 1, this opening groove 12 is to shear at complete damping sleeve 1 to form, and opening groove 12 makes damping sleeve 1, and it has certain elasticity; Undersetting 4 is all coaxial with integral body, fixed cover 2, damping sleeve 1 that upper bracket 9 consists of, 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 faces near pad 5 end cap 8 is installed, end cap 8 is fixed on the fixed cover by screw 7, as conventional fixing means, also can adopt the replacements such as bolt; Between end cap 8 and pad 5 spring 6 is installed, spring 6 is in compressive state, and the elastic force of spring 6 passes to damping sleeve 1 by pad 5; According to size and the specification of using lathe, determine that lathe slide carriage surface is to the height of main shaft pivot, and then definite follow-rest installation base surface is to the height value H at damping sleeve center, according to the size of being determined damping sleeve 1 internal diameter by the diameter of turner part, and then the diameter of definite fixed cover 2, determine again the diameter of adjustment ring 3 according to the size of bearing diameter, adjust the relative dimensions of remaining parts according to assembly relation.
Vibration damping follow-rest using method of the present invention is as follows:
The first step: damping sleeve 1 is packed in the fixed cover 2, then be inserted on the processed workpiece;
Second one: be installed work piece on the lathe and fixed cover 2 is positioned on the adjustment ring 3;
The 3rd step: semi-ring and upper bracket 9 on the adjustment ring 3 is installed, and connected coolant hose;
The 4th step: after damping sleeve 1 large end face is packed pad 5 and spring 6 into, reinstall end cap 8, and fastening with screw 7, but leave the adjusting surplus about 5mm;
The 5th step: all the other supplemental support of centering;
The 6th step: lathe is suspended to neutral, manually dish moves the chuck rotational workpieces, beat beating of table look-up workpiece at the end face of this follow-rest, excessive if beat, illustrate that damping sleeve is excessively loose, should adjust end cap housing screw 7, increase the compression dynamics of spring 6, meet the demands until beat, during the sensation workpiece rotating certain resistance is arranged, but can coil moving for good;
The 7th step: test run, open the cooling fluid switch, adding the rotating speed rotational workpieces in man-hour, to observe cooling fluid and can discharge smoothly, damping sleeve 1 has or not and burns phenomenon, and whether damping sleeve 1 is relative static with fixed cover 2, and whether damping sleeve 1 and machining shaft can relatively rotate;
The 8th step: got final product processing work after above step is finished.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and any simple modification, the equivalent variations on every foundation technical spirit of the present invention above embodiment done all fall within protection scope of the present invention.
Claims (9)
1. the vibration damping follow-rest of turning slender axles, comprise undersetting (4), and with the upper bracket (9) of undersetting (4) coupling, upper bracket (9) consists of the cylindrical cavity structure with undersetting (4), 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) passes through taper fit with fixed cover (2), at the larger end of damping sleeve (1) diameter spring (6) is installed, spring (6) is fixed in the fixed cover (2) by end cap (8), and acts on by pad (5) on the major diameter end face of damping sleeve (1).
2. the vibration damping follow-rest of a kind of turning slender axles according to claim 1 is characterized in that: be provided with opening groove (12) at described damping sleeve (1).
3. the vibration damping follow-rest of a kind of turning slender axles according to claim 1 is characterized in that: be provided with cooling oil groove (11) on the madial wall of described damping sleeve (1).
4. the vibration damping follow-rest of a kind of turning slender axles according to claim 3, it is characterized in that: described cooling oil groove (11) distributes in the shape of a spiral.
5. the vibration damping follow-rest of a kind of turning slender axles according to claim 3, it is characterized in that: be provided with connection damping sleeve (1) inwall and the outside through hole that is communicated with of upper bracket (9) at described upper bracket (9), fixed cover (2) and damping sleeve (1), hose coupling (10) is installed in this through hole.
6. the vibration damping follow-rest of the described a kind of turning slender axles of any one in 5 according to claim 1, it is characterized in that: the madial wall at described upper bracket (9) and undersetting (4) is provided with two circle shape grooves that are parallel to each other, adjustment ring (3) is installed in this groove, and described adjustment ring (3) is sleeved on fixed cover (2) outer surface.
7. the vibration damping follow-rest of a kind of turning slender axles according to claim 6 is characterized in that: the adjustment ring (3) in the described groove is made of two semi-rings.
8. the vibration damping follow-rest of the described a kind of turning slender axles of any one in 5 according to claim 1, it is characterized in that: described damping sleeve (1) adopts fabroil or nylon to make.
9. the vibration damping follow-rest of the described a kind of turning slender axles of any one in 5 according to claim 1, it 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 true CN103009075A (en) | 2013-04-03 |
| CN103009075B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775367A (en) * | 2016-08-26 | 2018-03-09 | 中石化石油工程技术服务有限公司 | A kind of floating box type pipe maintenance support frame |
| CN114101753A (en) * | 2021-12-15 | 2022-03-01 | 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 |
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| 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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| 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775367A (en) * | 2016-08-26 | 2018-03-09 | 中石化石油工程技术服务有限公司 | A kind of floating box type pipe maintenance support frame |
| 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 |
| CN114101753A (en) * | 2021-12-15 | 2022-03-01 | 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 |
| 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 |
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