CN101186018A - Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel - Google Patents
Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel Download PDFInfo
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- CN101186018A CN101186018A CNA2007103037652A CN200710303765A CN101186018A CN 101186018 A CN101186018 A CN 101186018A CN A2007103037652 A CNA2007103037652 A CN A2007103037652A CN 200710303765 A CN200710303765 A CN 200710303765A CN 101186018 A CN101186018 A CN 101186018A
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Abstract
The invention relates to a processing method of a central frame and a triangle sleeve of an equal-height triangle sleeve. The invention includes the steps: (1) a debugging bar is designed and manufactured; (2) the debugging bar is used for a grinding trial to regulate a cylindrical grinder for use; (3) a machine tool is regulated by the debugging bar to be a standard external grinding required by the grinding of the triangle sleeve; (4) three guide faces of the triangle sleeve which have a 60 degree angle with each other are respectively grinded out through three-time positioning on a 60-degree clamp on a electromagnetic absorbing disk of a plane grinder; (5) a mutual parallel degree between three faces is detected and is less than 0.003mm. The invention has beneficial effects that the structure loading contact area of the equal-height triangle sleeve is big; the loading capability is strong and the guide accuracy is high. No distortion happens to the moving direction of the triangle sleeve under the effect of forces from any direction. Not only a fact that a wear-resistant PTFE support face fixed at the front end of the triangle sleeve contacts the supported external circularity on one generatrix can be guaranteed, but also the structural central frame of the equal-height triangle sleeve is convenient for repairing.
Description
Technical field
This patent relates to a kind of processing method of novel centre frame and high accuracy cam sleeve of contour cam sleeve structure.Novel contour cam sleeve structure can be extended to other field of similar tailstock etc. in the lathe.
Background technology
Various medium-sized precision internal grinders all dispose the centre frame of traditional circular sleeve both at home and abroad, and all there are the following problems technically:
1. circular sleeve wants sensitive moving gappedly to exist, even if using screw radially locks, a bus contact on its contact is still axially in principle, the locking back is because of the existence in gap, not only supporting rigidity is affected, and in grinding process, can produce small rocking, thereby influence the high-precision grinding quality of endoporus.
2. guiding in the circular sleeve and locking are all adopted cylinder end clamping fixed screw to cooperate with gathering sill on the circular sleeve to lead, and can be used to locking sleeve.Because of the screw cylindrical end cooperates the gap that all has more than the 0.5mm with gathering sill, make sleeve adjust and the process of locking on the circumference angle, have small rocking, and then make wear-resisting poly-tetrafluoro (copper) piece of barrel forward end and cylindrical support the bus that contacts also can to take place small twisted.Owing to twisted make to change on the contact supporting-point height cause the drift at part supporting center, not only make μ m level adjust difficulty, more can cause the stability of adjusting locking back grinding accuracy to reduce.
3. because the pitch that the adjustment leading screw of centre frame sliding sleeve mostly adopts is bigger, do not eliminate thread pitch yet.By the processes requirement, though leading screw do the amount of movement of very little adjustment sliding sleeve just can be bigger, adjust centering to μ m level quite the difficulty and also time-consuming.Add man-hour because the gapped existence of lead screw pair is locked the back under gravity and grinding force effect, its sliding sleeve has axial minute movement slightly, will destroy original adjustment precision.This is the common fault of all traditional centre frames.
Can accomplish to eliminate the leading screw gap, can carry out the adjustment of μ m level again, can guarantee again after the locking that stable accuracy is only desirable accurate centre frame.
Summary of the invention
In order to address the above problem, the present invention has used rigidity foot, Millesimal fine adjustment, high-precision contour cam sleeve new structure on the centre frame structural design, substituted traditional circular sleeve structure.
A kind of centre frame of contour cam sleeve structure, centre frame base and centre frame upper body are equipped with three groups of contour cam sleeve mechanisms altogether, are 120 ° of distributions to each other.60 ° of grooves that three corresponding facing-ups of difference become on cam sleeve and centre frame base and the centre frame upper body cooperate the location, are compressed respectively by three glands.Be fixed on three ring flanges on centre frame base and the centre frame upper body, can realize axially driving the radial location of three groups of micrometer screws of cam sleeve, simultaneously ring flange respectively with the assembling of three handwheels by set screw, realize the axial location of three groups of micrometer screws.Cam sleeve one end is equipped with the fore-set other end and is connected with micrometer screw, and the compression spring of pretension is housed respectively between micrometer screw and cam sleeve.There are plane and bearing pin location in centre frame base and centre frame upper body, are fixed locking nut locking by the link pin axle.Two groups of eccentric tight bars are housed, by being assemblied in the tight piece realization centre frame of eccentric part and being connected of guide rail above the Grinder bench before and after on the centre frame base with fixing.
A kind of processing method of contour cam sleeve contains in steps and is:
(1) manufacture and design the debugging rod:
The two ends centre bore must carefully grind out, with top the contact ringwise before and after the cylindrical grinder, and must not be jagged.Otherwise the cylindrical circularity and the cylindricity that grind do not reach requirement.The contour cam sleeve structure of size that manufactures and designs and high accuracy is just the same, does not only process triangular facet;
(2) with debugging rod examination mill, adjust the cylindrical grinder that will use:
With debugging rod top cylindrical grinding on the cylindrical grinder that will use of ground centre bore, make the circularity of institute's cylindrical grinding and the requirement that cylindricity all is less than 1 μ m by adjusting lathe.Through the adjusted lathe of examination mill, its headstock, tailstock axial location do not allow moving again, must not change forward and backward toply simultaneously again, lathe are in treat the state of grinding triangular sleeve part technological datum cylindrical Φ 50 ± 0.01.
(3) top grinding triangular sleeve technological datum cylindrical Φ 50 ± 0.01 to cylindricity less than the 0.0015mm requirement.Can't directly use miking circularity and cylindricity on the cam sleeve cylindrical, therefore with the debugging rod lathe being adjusted to requirement is grinding cam sleeve technological datum cylindrical, makes the satisfied key foundation work less than 0.0015mm of its cylindricity.Ground the back and rechecked down three side bus of part Φ 50 ± 0.01 cylindricals, controlled tapering well top the holding of former lathe.
(4) living on 60 ° of anchor clamps on the flat stone mill magnechuck, position by the contour locating piece of autogenous grinding with technological datum Φ 50 ± 0.01 cylindricals three place's side bus respectively, in two stomidiums, part is gently compressed again with the screw pressing plate.Three faces all should grind twice at least repeatedly, all will carry out no-spark tarry matter twice during every final grinding, to obtain higher precision.Note during grinding gently compressing with hand examination autogenous grinding locating piece, must not become flexible, it is consistent that feel two ends frictional force is wanted.
(5) three face degree parallel to each other are less than the detection method of 0.003mm:
By on 0 grade of flat board respectively with three faces location, examine the Up Highway UHW of corresponding technological datum cylindrical respectively with amesdial, parallelly with flat board can guarantee to reach the part requirement less than 0.002mm.
Benefit of the present invention is:
(1) rigidity foot, Millesimal fine adjustment, high-precision cam sleeve new structure have been used in innovation on the centre frame structural design, have substituted traditional circular sleeve structure.The cam sleeve new structure carrying contact-making surface of high rigidity is big, and not only bearing capacity is strong, and the guiding accuracy height.Cam sleeve can not produce twisted on the direction of motion under the effect of power in any direction.Both having guaranteed to be fixed on the wear-resisting poly-tetrafluoro supporting end face of cam sleeve front end, to remain with the cylindrical that is supported be that a bus contacts, can not produce little by little twisted, overcome the stressed back contact of circular sleeve bus and produced twisted defective, can guarantee the stability of adjusted grinding accuracy.
(2) Xin Ying cam sleeve precise structure centre frame is convenient to repair, and can keep high accuracy, high performance reset condition all the time.The circular sleeve of tradition centre frame uses wearing and tearing to produce the gap owing to long-term, can not repair after the service precision forfeiture.And the cam sleeve structure is recoverable.But the triangle gathering sill facing-up on the support body, reconditioning gland clearance-adjustable, the rigidity of centre frame and precision not only can be recovered but also can repair betterly.
(3) the spring length on the novel centre frame cam sleeve can be adjusted length according to sleeve, also can change easily.Leading screw is when forward and reverse adjustment, and the gap after leading screw is paid carrying is in the gap all the time and is eliminated state under the effect of spring force.Not only realized the transmission of no gap, and can under gravity and grinding force effect, also can not change.
(4) reliable lock, the dynamic stiffiness foot, grinding accuracy is stable: 120 ° of three groups of cam sleeves dividing equally of novel centre frame, respectively with in the firm 60 ° of gathering sills that the triangle sliding sleeve are fastened on the center support body of two lock-screws on the gland, because of its contact-making surface big, guiding accuracy is good, even in the locking process, mark closely under the sth. made by twisting torsional moment effect to sleeve, also can not cause cam sleeve that any small reversing arranged, its reliable lock and locking back carrying contact area characteristics big, that rigidity is sufficient have been guaranteed the stability of centering adjustment and grinding accuracy.The advantage that the cam sleeve precise structure centre frame of innovative design is had on serviceability is that traditional circular sleeve centre frame is not available.
(5) adopt the accurate thread transmission between leading screw and the cam sleeve, its pitch is 1mm.Be carved with 200 lattice and adjust on the handwheel cylindrical, i.e. lattice of the every rotation of handwheel, it is 5 μ m that sleeve is adjusted amount of movement, thereby makes the accurate centre frame of cam sleeve structure can realize thousand fens fine adjustments as micrometer.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is for making the excellent design drawing of debugging;
Fig. 3 is the processing schematic diagram;
Fig. 4 is the contour cam sleeve design drawing of high accuracy.
The specific embodiment
Embodiment 1: according to shown in Figure 1, a kind of accurate centre frame of contour cam sleeve structure, comprise: centre frame base 1, centre frame upper body 2, ring flange 3, leading screw 4, cam sleeve 5, handwheel 6, axle 7, alignment pin 8, pull bar 9, locking nut 10, bearing pin 11, handle-bar grip 12, eccentric tight bar 13, tight piece 14, gland 15, fore-set 16
Embodiment 2: a kind of processing method of contour cam sleeve contains in steps and is:
(1) manufactures and designs the debugging rod: as shown in Figure 2, except that three faces of A, B, C of 60 ° of angles are not done, the duplicate debugging rod of other and Fig. 4, as shown in the figure: the two ends centre bore must carefully grind out, with top the contact ringwise before and after the cylindrical grinder, must not be jagged.Otherwise the cylindrical circularity and the cylindricity that grind do not reach requirement.
(2) with debugging rod examination mill, adjust the cylindrical grinder that will use:, make the circularity of institute's cylindrical grinding and the requirement that cylindricity all is less than 1 μ m by adjusting lathe with debugging rod top cylindrical grinding on the cylindrical grinder that will use of ground centre bore.Through the adjusted lathe of examination mill, its headstock, tailstock axial location do not allow moving again, must not change forward and backward toply simultaneously again, lathe are in treat the state of grinding triangular sleeve part technological datum cylindrical Φ 50 ± 0.01.
(3) top grinding triangular sleeve technological datum cylindrical Φ 50 ± 0.01 to cylindricity less than the 0.0015mm requirement.Can't directly use miking circularity and cylindricity on the triangle cylindrical, therefore with the debugging rod lathe being adjusted to requirement is grinding cam sleeve technological datum cylindrical, makes the satisfied key foundation work less than 0.0015mm of its cylindricity.Ground the back and rechecked down three side bus of part Φ 50 ± 0.01 cylindricals, controlled tapering well top the holding of former lathe.
(4) as shown in Figure 3, on 60 ° of anchor clamps 17 on the flat stone mill magnechuck, live, position by the contour locating piece 18 of autogenous grinding with technological datum Φ 50 ± 0.01 cylindricals three place's side bus respectively, in two stomidiums, part is gently compressed again with screw pressing plate 19.A, B, three faces of C all should grind twice at least repeatedly, all will carry out no-spark tarry matter twice during every final grinding, to obtain higher precision.Note during grinding gently compressing with hand examination autogenous grinding locating piece 18, must not become flexible, it is consistent that feel two ends frictional force is wanted.
(5) three face degree parallel to each other are less than the detection method of 0.003mm: by on 0 grade of flat board respectively with A, B, three faces location of C, examine the Up Highway UHW of corresponding technological datum cylindrical respectively with amesdial, parallelly with flat board can guarantee to reach the part requirement less than 0.002mm.
Claims (2)
1. the centre frame of a contour cam sleeve structure, it is characterized in that: centre frame base and centre frame upper body are equipped with three groups of contour cam sleeve mechanisms altogether, be 120 ° of distributions to each other, 60 ° of grooves that three corresponding facing-ups of difference become on cam sleeve and centre frame base and the centre frame upper body cooperate the location, compress respectively by three glands, be fixed on three ring flanges on centre frame base and the centre frame upper body, realize axially driving the radial location of three groups of micrometer screws of cam sleeve, simultaneously ring flange respectively with the assembling of three handwheels by set screw, realize the axial location of three groups of micrometer screws, cam sleeve one end is equipped with the fore-set other end and is connected with micrometer screw, the compression spring of pretension is housed respectively between micrometer screw and cam sleeve, there are plane and bearing pin location in centre frame base and centre frame upper body, fix by the link pin axle, locking nut locking, two groups of eccentric tight bars are housed, by being assemblied in the tight piece realization centre frame of eccentric part and being connected of guide rail above the Grinder bench before and after on the centre frame base with fixing.
2. according to the processing method of claim 1 described a kind of contour cam sleeve structure, it is characterized in that containing in steps and be:
(1) manufacture and design the debugging rod: the two ends centre bore must carefully grind out, with top the contact ringwise before and after the cylindrical grinder, and must not be jagged; Otherwise the cylindrical circularity and the cylindricity that grind do not reach requirement; The contour cam sleeve structure of size that manufactures and designs and high accuracy is just the same, does not only process triangular facet;
(2) with debugging rod examination mill, adjust the cylindrical grinder that will use:, make the circularity of institute's cylindrical grinding and the requirement that cylindricity all is less than 1 μ m by adjusting lathe with debugging rod top cylindrical grinding on the cylindrical grinder that will use of ground centre bore; Through the adjusted lathe of examination mill, its headstock, tailstock axial location do not allow moving again, must not change forward and backward toply simultaneously again, lathe are in treat the state of grinding triangular sleeve part technological datum cylindrical Φ 50 ± 0.01;
(3) top grinding triangular sleeve technological datum cylindrical Φ 50 ± 0.01 to cylindricity less than the 0.0015mm requirement; Can't directly use miking circularity and cylindricity on the triangle cylindrical, therefore with the debugging rod lathe being adjusted to requirement is grinding cam sleeve technological datum cylindrical, makes the satisfied key foundation work less than 0.0015mm of its cylindricity; Ground the back and rechecked down three side bus of part Φ 50 ± 0.01 cylindricals, controlled tapering well top the holding of former lathe;
(4) living on 60 ° of anchor clamps on the flat stone mill magnechuck, position by the contour locating piece of autogenous grinding with technological datum Φ 50 ± 0.01 cylindricals three place's side bus respectively, in two stomidiums, part is gently compressed again with the screw pressing plate; Three faces all should grind twice at least repeatedly, all will carry out no-spark tarry matter twice during every final grinding, to obtain higher precision; Note during grinding gently compressing with hand examination autogenous grinding locating piece, must not become flexible, it is consistent that feel two ends frictional force is wanted;
(5) detect three face degree parallel to each other less than 0.003mm: by on 0 grade of flat board respectively with three faces location, examine the Up Highway UHW of corresponding technological datum cylindrical respectively with amesdial, parallelly with flat board can guarantee to reach the part requirement less than 0.002mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710303765A CN100588497C (en) | 2007-12-21 | 2007-12-21 | Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710303765A CN100588497C (en) | 2007-12-21 | 2007-12-21 | Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel |
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| Publication Number | Publication Date |
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| CN101186018A true CN101186018A (en) | 2008-05-28 |
| CN100588497C CN100588497C (en) | 2010-02-10 |
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| CN200710303765A Expired - Fee Related CN100588497C (en) | 2007-12-21 | 2007-12-21 | Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417394B (en) * | 2008-08-14 | 2012-08-22 | 陈善元 | Center rack for processing machine |
| CN103257330A (en) * | 2012-02-20 | 2013-08-21 | 上海联影医疗科技有限公司 | Inner diameter supporting unit and magnetic-field measuring device |
| CN103659388A (en) * | 2012-09-07 | 2014-03-26 | 陕西汉江机床有限公司 | Workpiece installing and positioning fixture of internal thread grinding machine |
| CN105479271A (en) * | 2016-01-29 | 2016-04-13 | 电子科技大学 | Sphere center centring and positioning device for five-axis machine tool error synchronous detection mechanism |
| CN107379003A (en) * | 2017-07-21 | 2017-11-24 | 清华大学 | Biaxial joint mechanism of robot |
| CN109590829A (en) * | 2017-09-30 | 2019-04-09 | 侯马市东鑫机械铸造有限公司 | A kind of Crankshaft Machining school detecting method of frame correction and bearing movable precision end to end |
-
2007
- 2007-12-21 CN CN200710303765A patent/CN100588497C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417394B (en) * | 2008-08-14 | 2012-08-22 | 陈善元 | Center rack for processing machine |
| CN103257330A (en) * | 2012-02-20 | 2013-08-21 | 上海联影医疗科技有限公司 | Inner diameter supporting unit and magnetic-field measuring device |
| CN103659388A (en) * | 2012-09-07 | 2014-03-26 | 陕西汉江机床有限公司 | Workpiece installing and positioning fixture of internal thread grinding machine |
| CN105479271A (en) * | 2016-01-29 | 2016-04-13 | 电子科技大学 | Sphere center centring and positioning device for five-axis machine tool error synchronous detection mechanism |
| CN107379003A (en) * | 2017-07-21 | 2017-11-24 | 清华大学 | Biaxial joint mechanism of robot |
| CN109590829A (en) * | 2017-09-30 | 2019-04-09 | 侯马市东鑫机械铸造有限公司 | A kind of Crankshaft Machining school detecting method of frame correction and bearing movable precision end to end |
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| Publication number | Publication date |
|---|---|
| CN100588497C (en) | 2010-02-10 |
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Owner name: BMEIMT CO., LTD. Free format text: FORMER OWNER: HIGH TECHNOLOGIES CO., LTD., BEIJING ELECTROMECHANICAL ACADEMY Effective date: 20120503 |
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Effective date of registration: 20120503 Address after: 100027 Beijing city Chaoyang District, No. four North Road, Kalibin four Patentee after: Beijing Machine Tool Co.,Ltd. Address before: 100027 Beijing city Chaoyang District Gongti North Road No. 4 Patentee before: BMEI CO.,LTD. |
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Granted publication date: 20100210 Termination date: 20211221 |