CN102554266B - Lathe machining method of bearing bracket and square box type double-center-distance lathe clamp - Google Patents
Lathe machining method of bearing bracket and square box type double-center-distance lathe clamp Download PDFInfo
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- CN102554266B CN102554266B CN 201210020763 CN201210020763A CN102554266B CN 102554266 B CN102554266 B CN 102554266B CN 201210020763 CN201210020763 CN 201210020763 CN 201210020763 A CN201210020763 A CN 201210020763A CN 102554266 B CN102554266 B CN 102554266B
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Abstract
The present invention relates to a lathe machining method of a bearing bracket and a square box type double-center-distance lathe clamp. The square box type double-center-distance lathe clamp comprises a square housing and a square housing cover. The square box type double-center-distance lathe clamp is characterized in that: the square housing is a square cylinder which is composed of four surrounding surfaces; one port of the square housing is provided with a square box cover; a matching surface between the square box cover and the square box body is provided with a positioning boss which is fitted with the square box body through interference fit; the central axes of the upper surface and the lower surface of the square housing are provided with keyways; the square housing is provided with a central height positioning hole; and an upper positioning surface and a lower positioning surface of the square housing are provided with threaded holes. The lathe machining method of the bearing bracket is characterized in that: the lathe machining method of a bearing bracket is clamped by a four-pawl chuck; and vehicle hole alignment is performed by means of a measuring workpiece through keyway symmetry adjustment and center height adjustment. The lathe machining method of the bearing bracket and the square box type double-center-distance lathe clamp are characterized in that: clamp positioning clamping operation is simple and quick; workpiece positioning alignment is quick and accurate; alignment positioning can be finished in about 20 minutes; one-time positioning of the clamp is suitable for machining two kinds of fixed-center-distance bearing brackets; high machining precision is obtained and the production efficiency is improved for more than five times.
Description
Technical field:
The present invention relates to a kind of lathe processing method and square box type double-center-distance turning attachment of bearing block, belong to mechanical field.
Background technology:
Bearing block is the supporting and location parts of power transmission shaft, the stationarity of whole operation process, durability, carrying are stressed etc. guarantees entirely by bearing block, therefore the accuracy of manufacture of bearing block requires very high, the dimensional tolerance in the form and position tolerances such as center is high, symmetry, perpendicularity, hole, surface roughness etc. have very high required precision, the processing of bearing block has two kinds of methods at present: 1. for the processing in the hole on the part of irregular body, generally all adopt boring machine or milling machine to carry out the processing in hole both at home and abroad.This conventional machining explained hereafter efficiency is low, and surface roughness is poor, and during batch production, dimensional accuracy is wayward, and bearing saddle bore is difficult to guarantee with respect to the symmetry of the keyway of bottom, 2. adopt the lathe processing method that angle block of right angle is fixture: at first the four paws of chuck is laid down, then angle block of right angle is closed on chuck with the bolt handle, again workpiece is put together on angle block of right angle, due to the static unbalance after bent plate and clamping workpiece, must be at the plane of symmetry closing counterweight, dynamic balancing when guarantee turns round like this, this kind of processing method production efficiency improves a lot, but the location centering of fixture is difficulty comparatively, generally need about 1～2 day, and dynamic balance weight is installed comparatively difficulty of configuration, can only process a kind of bearing block of specification behind the fixture location, just need again the centering location once change specification, due to angle block of right angle, counterweight is to be fixed by bolts on chuck, so it is very difficult that location is adjusted.
Summary of the invention:
The purpose of this invention is to provide a kind of fixture positioning and clamping simple and fast, workpiece, counterweight clamping are easy, workpiece location centering is accurate, the fixture one-time positioning is applicable to two kinds of distance between bearing seat processing that center, the lathe processing method of the bearing block that machining accuracy is high and square box type double-center-distance turning attachment.
Method of the present invention is as follows:
Make one by upper locating surface according to the bearing block of the distance that centers of two kinds of specifications will processing, lower locating surface, left facade, the square box that right facade surrounds, the adjacent surface of square box is mutually vertical, to opposite, be parallel to each other, distance between the upper locating surface of square box and the lower locating surface of square box equals the bearing block centre-to-centre spacing sum of two kinds of specifications, square box has two ports, one of them port as the square box back side, is furnished with the square chest lid on it, the peripheral dimension of square chest lid is greater than the peripheral dimension of square box, the mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit, another port surface of square box is as the front of square box, the combination of square box and square chest lid is as the square chest type fixture, upper at square box, on lower locating surface centered by the orthographic projection line of the axis of square box line have keyway, cover the high locating hole in the center of having at square chest, the center of the high locating hole in center is on the longitudinal centre line of square chest lid, and the center line of the high locating hole in center is upper to square chest lid positioning boss, the distance of lower surface equals respectively the centre-to-centre spacing of the bearing block of two kinds of specifications, take the keyway center line as symmetrical on the upper locating surface of square box, lower locating surface, and the position that the handle bottom the bearing block of two kinds of specifications closes screw hole, have corresponding screw hole, with chuck clamping square chest type fixture, the four paws of chuck is stuck in square chest and covers, and with the setting stick car, fixture is rotated with lathe chuck, with dial gauge, beats square box front end face, by adjusting the position of controlling of chuck four paws, guarantees beat≤0.02mm of dial gauge, hit the high locating hole of the heart with dial gauge, the center line of the high locating hole in the ，Shi center, position of controlling by adjusting the chuck four paws is concentric with the machine tool chief axis axis, beat≤0.02mm of dial gauge, the bearing block blank of the distance that centers of a kind of specification corresponding with locating surface under square box that will process is positioned on the lower locating surface of square box with key, and fix with bolt, on upper locating surface (the not locating surface of the installation shaft bearing blank) outer face of square box, utilize key screw to close corresponding counterweight, make the square chest type fixture reach static balance, see that by lathe test run bearing block blank hole circle gets final product, then enter fixture leveling and adjusting step, at first be the adjustment of bearing saddle bore with respect to the symmetry of keyway: after unclamping the bearing block blank and horizontally rotating 180 °, again the bearing block blank is anchored under square chest on locating surface, play the circular runout of test run bearing block blank hole with dial gauge, as circular runout is greater than 2 times of dial gauge indicating accuracy, press dial gauge to adjust the relative pawl (according to the positive and negative of jitter values, determining it is to adjust left or to the right) of two levels in four paws according to 1/2 left and right of actual measurement jerk value, the adjustment that center is high: with outside micrometer, measure and seen round test run bearing block blank hole actual diameter value, measure the actual range of test run bearing block blank hole bottom minimum point to lower locating surface with altimeter, survey the high A=1/2D+H in center, in formula: the A-center is high, D-test run bearing block blank hole actual diameter, H-test run bearing block blank hole bottom minimum point is to locating surface actual range under square chest, if this value departs from the high and tolerance grade in the center of drawing requirement, according to 1/2 of the high center with drawing requirement, actual measurement center high (containing tolerance grade) difference, adjust up and down in four paws two vertically opposite pawls (according to the positive and negative of difference, determining it is upwards or downwards to adjust), Che Kongjian is round again, then repeat the high set-up procedure of adjustment and center of above-mentioned bearing saddle bore with respect to the symmetry of keyway, until the test run bearing saddle bore is with respect to the symmetry≤0.02mm of keyway, center high level error≤0.02mm, then carry out formal car hole, after a kind of bearing saddle bore of specification machines, lay down this bearing block and counterweight, by another kind, the bearing block of the center distance corresponding with locating surface on square box is positioned on the upper locating surface of square box with key, and fix with bolt, on lower locating surface (the not locating surface of the installation shaft bearing) outer face of square box, utilize key screw to close counterweight, make the square chest type fixture reach static balance, directly this bearing seat coach hole is got final product.
Square box type double-center-distance turning attachment used in method of the present invention, comprise square box, the square chest lid, square box is by upper locating surface, lower locating surface, left facade, right facade surrounds, the adjacent surface of square box is mutually vertical, to opposite, be parallel to each other, square box has two ports, is furnished with the square chest lid on one of them port, the peripheral dimension of square chest lid is greater than the peripheral dimension of square box, the mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit, upper at square box, on lower locating surface centered by the orthographic projection line of the axis of square box line have keyway, cover the high locating hole in the center of having at square chest, the center of the high locating hole in center is on the longitudinal centre line of square chest lid, upper locating surface at square box, the keyway center line take on lower locating surface as symmetrical, have corresponding screw hole.
Advantage of the present invention is: adopt the chuck clamping device, fixture positioning and clamping simple and fast, workpiece, counterweight clamping are easy, workpiece location centering quick and precisely, approximately 20 minutes can be located by centering, the fixture one-time positioning is applicable to two kinds of distance between bearing seat processing that center, and machining accuracy is high, production efficiency improves more than 5 times, and production cost significantly reduces.
The accompanying drawing explanation:
Fig. 1 is the front view of the square box of invention;
The front view that Fig. 2 is the square chest lid;
The left view that Fig. 3 is Fig. 2;
The schematic diagram with the chuck clamping device that Fig. 4 is processing method of the present invention;
A-A that Fig. 5 is Fig. 4 is to cutaway view;
The upward view that Fig. 6 is Fig. 5 (having omitted bearing block in figure closing bolt).
In accompanying drawing: 1. square box, 2. the handle between square chest lid and square box closes bolt, 3. square chest covers, 4. positioning key is closing screw, 5. positioning key, 6. clutch shaft bearing seat blank, 7. the second bearing block blank, 8. bearing block is closing bolt, 9. the first counterweight, 10. locating surface on square box, 11. the high locating hole in center, 12. locating surface under square box, 13. the second counterweight, 14. chuck pawl, 15. bearing block is closing screw hole, 16. positioning key is closing screw hole, 17. square box screw, 18. upper locating surface keyway, 19. lower locating surface keyway, 20. positioning boss, 21. positioning boss upper surface, 22. positioning boss lower surface.
The specific embodiment:
With reference to accompanying drawing, square box type double-center-distance turning attachment of the present invention, comprise square box 1, square chest lid 3, square box is by upper locating surface 10, lower locating surface 12, left facade, right facade surrounds, the adjacent surface of square box is mutually vertical, to opposite, be parallel to each other, square box has two ports, is furnished with square chest lid 3 on one of them port, the peripheral dimension of square chest lid is greater than the peripheral dimension of square box, the mating surface with square box of square chest lid is provided with the positioning boss 20 with the square box interference fit, upper at square box, on lower locating surface centered by the orthographic projection line of the axis of square box line have keyway 18, 19, cover the high locating hole 11 in the center of having at square chest, the center of the high locating hole in center is on the longitudinal centre line of square chest lid, upper locating surface at square box, the keyway center line take on lower locating surface as symmetrical, have corresponding screw hole 15.
Square chest lid with between square box, with bolt 2, put together on together with, positioning key 5 is with together with square box 1 use screw 4 puts together on, during the machining shaft bearing, workpiece to be machined 6 bearing block I or 7 bearing block II and square box 1 use bolt 8 are fixed together.
Under the upper locating surface 10 of square box and square chest, locating surface 12 and 18 times locating surface keyways of upper locating surface keyway 19 adopt the moulding of wire cutting method time processing, have guaranteed uniformity and the symmetry of keyway on the depth of parallelism, two sides of two locating surfaces.
There is one with respect on positioning boss in the middle of the square chest lid, the high locating hole 11 in the center of the bias of lower surface, the center of this eccentric orfice is on the longitudinal centre line of square chest lid, and the center line of the high locating hole in center is upper to square chest lid positioning boss, the distance of lower surface equals respectively the centre-to-centre spacing of the bearing block of two kinds of specifications, and should guarantee that two centre-to-centre spacing accuracies of manufacture reach 1/3～1/5 of drawing requirement precision, this hole is a centering datum hole, hand turning after chuck clamping turning attachment, with the dial gauge circular runout of punching, adjusting four paws only needs fixture to be adjusted in dial gauge indicating accuracy scope about 20 minutes.
The peripheral dimension of square chest lid 3 is bigger than the peripheral dimension of square box 1, like this when the chuck clamping device, clamping power just acts on square chest fully and covers, the square chest lid is one and only has the middle solid square plate of having opened a centering datum hole, intensity and toughness is very good, so just guaranteed that square box does not stress, this has also just guaranteed the localization part precision.The positioning boss that square chest covers and square box fit dimension adopt interference fit, can guarantee positioning precision like this, and positioning boss has the guiding conical surface that is applicable to assembling, have guaranteed the easiness of assembling.
Square box and square chest cover combined structure, make intensity, rigidity, the stability of fixture very good, and when fixture rotates with lathe chuck, dynamic balancing is also better.Owing to having adopted the square box structure, not the locating surface of sympodium bearing blank, utilize the screw hole 15 of clamping bearing block blank on locating surface can reach static balance to the suitable counterweight of working as, the clamping counterweight is very convenient, so just guarantee kinematic accuracy, also just guaranteed machining accuracy.The positioning boss periphery right angle that square box 1, square chest lid 3 and square chest cover all carries out inside and outside chamfering, has guaranteed the security in the use procedure.
The fixture material can adopt high-quality casting pig, cast steel or steel alloy manufacture, through rational Technology for Heating Processing, can guarantee like this chucking surface hardness and fixture metal structure structure stability, thereby guarantee the precision of fixture, the machining accuracy of assurance workpiece, also make fixture improve service life simultaneously.
The lathe processing method of bearing block of the present invention, be to adopt chuck clamping square box type double-center-distance turning attachment, carries out the processing of bearing saddle bore, and its clamping centering step is as follows:
1, by square chest type turning attachment chuck clamping, beat square box front end face with dial gauge, guarantee beat≤0.02mm of dial gauge, hit the high locating hole 11 of the heart, make the center line of the high locating hole in center concentric with the machine tool chief axis axis, beat≤0.02mm of dial gauge, now just guaranteed that the Primary Location precision of fixture is in measurer indicating accuracy scope.
2. processed bearing saddle bore is with respect to the high accurate adjustment method of keyway symmetry and center
At first the bottom surface of workpiece to be machined clutch shaft bearing seat blank 6, the second bearing block blank 7 processed, the moulding of line cutting keyway, bore and attack the bottom bolts hole, now just possess the clamping location condition.
3. keyway symmetry method of adjustment
Clamping the second bearing block blank 7, be anchored on square box locating surface 12 from the square box bottom by workpiece closing bolt 8 with bearing block, and then test run bearing block blank hole is shown in that circle gets final product, and then enters fixture leveling and adjusting step.
Unclamp workpiece, again workpiece is anchored on to locating surface under square chest after horizontally rotating 180 °, play the circular runout of test run bearing block blank hole with dial gauge, as circular runout is greater than 2 times of dial gauge indicating accuracy, presses dial gauge to adjust two corresponding pawl 14(according to 1/2 left and right of actual measurement jerk value and determine it is to adjust left or to the right according to the positive and negative of jitter values).
4. center height adjusting method
Measure and seen round test run bearing block blank hole actual diameter value with outside micrometer, measure the actual range of the second bearing block blank hole bottom minimum point of test run to lower locating surface with altimeter, survey high A=1/2D+H(A-center, center high, D-test run bearing block blank hole actual diameter, H-test run bearing block blank hole minimum point is to the actual range of locating surface under square chest) if this value departs from the high and tolerance grade in the center of drawing requirement, according to 1/2 of the high center with drawing requirement, actual measurement center high (containing tolerance grade) difference, adjust up and down in four paws two vertically opposite pawls (according to the positive and negative of difference, determining it is upwards or downwards to adjust).
The Che Kongjian circle, then repeat above-mentioned steps 3 and 4 again, so repeatedly just can guarantee the symmetry≤0.02mm of bearing block blank hole with respect to keyway, center high level error≤0.02mm 2～3 times.
After said process has carried out, just can carry out the formal processing of initial workpiece workpiece, be produced in batches after first item inspection is qualified.In batch production process, after the second bearing block blank 7 machines, lay down this bearing block and counterweight, clutch shaft bearing seat blank 6 use keys are positioned on the upper locating surface of square box, and fix with bolt, on lower locating surface (the not locating surface of the installation shaft bearing) outer face of square box, utilize key screw to close counterweight, make the square chest type fixture reach static balance, directly this bearing seat coach hole is got final product.
Claims (2)
1. the lathe processing method of a bearing block, it is characterized in that: according to the bearing block of the distance that centers of two kinds of specifications will processing, make one by upper locating surface, lower locating surface, left facade, the square box that right facade surrounds, the adjacent surface of square box is mutually vertical, to opposite, be parallel to each other, distance between the upper locating surface of square box and the lower locating surface of square box equals the bearing block centre-to-centre spacing sum of two kinds of specifications, square box has two ports, one of them port as the square box back side, is furnished with the square chest lid on it, the peripheral dimension of square chest lid is greater than the peripheral dimension of square box, the mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit, another port surface of square box is as the front of square box, the combination of square box and square chest lid is as the square chest type fixture, upper at square box, on lower locating surface centered by the orthographic projection line of the axis of square box line have keyway, cover the high locating hole in the center of having at square chest, the center of the high locating hole in center is on the longitudinal centre line of square chest lid, and the center line of the high locating hole in center is upper to square chest lid positioning boss, the distance of lower surface equals respectively the centre-to-centre spacing of the bearing block of two kinds of specifications, take the keyway center line as symmetrical on the upper locating surface of square box, lower locating surface, and the position that the handle bottom the bearing block of two kinds of specifications closes screw hole, have corresponding screw hole, with chuck clamping square chest type fixture, the four paws of chuck is stuck in square chest and covers, and with the setting stick car, fixture is rotated with lathe chuck, with dial gauge, beats square box front end face, by adjusting the position of controlling of chuck four paws, guarantees beat≤0.02mm of dial gauge, hit the high locating hole of the heart with dial gauge, the center line of the high locating hole in the ，Shi center, position of controlling by adjusting the chuck four paws is concentric with the machine tool chief axis axis, beat≤0.02mm of dial gauge, the bearing block blank of the distance that centers of a kind of specification corresponding with locating surface under square box that will process is positioned on the lower locating surface of square box with key, and fix with bolt, on the upper locating surface outer face of square box, utilize key screw to close corresponding counterweight, make the square chest type fixture reach static balance, see that by lathe test run bearing block blank hole circle gets final product, then enter fixture leveling and adjusting step, at first be the adjustment of bearing saddle bore with respect to the symmetry of keyway: after unclamping the bearing block blank and horizontally rotating 180 °, again the bearing block blank is anchored under square chest on locating surface, play the circular runout of test run bearing block blank hole with dial gauge, as circular runout is greater than 2 times of dial gauge indicating accuracy, press dial gauge to adjust the relative pawl of two levels in four paws according to 1/2 left and right of actual measurement jerk value, the adjustment that center is high: with outside micrometer, measure and seen round test run bearing block blank hole actual diameter value, measure the actual range of test run bearing block blank hole bottom minimum point to lower locating surface with altimeter, survey the high A=1/2D+H in center, in formula: the A-center is high, D-test run bearing block blank hole actual diameter, H-test run bearing block blank hole bottom minimum point is to locating surface actual range under square chest, if this value departs from the high and tolerance grade in the center of drawing requirement, 1/2 of the high difference in center of and drawing requirement high according to the actual measurement center adjust up and down in four paws two vertically opposite pawls, Che Kongjian is round again, then repeat the high set-up procedure of adjustment and center of above-mentioned bearing saddle bore with respect to the symmetry of keyway, until the test run bearing saddle bore is with respect to the symmetry≤0.02mm of keyway, center high level error≤0.02mm, then carry out formal car hole, after a kind of bearing saddle bore of specification machines, lay down this bearing block and counterweight, by another kind, the bearing block of the center distance corresponding with locating surface on square box is positioned on the upper locating surface of square box with key, and fix with bolt, on the lower locating surface outer face of square box, utilize key screw to close counterweight, make the square chest type fixture reach static balance, directly this bearing seat coach hole is got final product.
2. the square box type double-center-distance turning attachment used in the lathe processing method of a bearing block according to claim 1, comprise square box, the square chest lid, it is characterized in that: square box is by upper locating surface, lower locating surface, left facade, right facade surrounds, the adjacent surface of square box is mutually vertical, to opposite, be parallel to each other, square box has two ports, is furnished with the square chest lid on one of them port, the peripheral dimension of square chest lid is greater than the peripheral dimension of square box, the mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit, upper at square box, on lower locating surface centered by the orthographic projection line of the axis of square box line have keyway, cover the high locating hole in the center of having at square chest, the center of the high locating hole in center is on the longitudinal centre line of square chest lid, upper locating surface at square box, the keyway center line take on lower locating surface as symmetrical, have screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210020763 CN102554266B (en) | 2012-01-13 | 2012-01-13 | Lathe machining method of bearing bracket and square box type double-center-distance lathe clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210020763 CN102554266B (en) | 2012-01-13 | 2012-01-13 | Lathe machining method of bearing bracket and square box type double-center-distance lathe clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102554266A CN102554266A (en) | 2012-07-11 |
| CN102554266B true CN102554266B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210020763 Expired - Fee Related CN102554266B (en) | 2012-01-13 | 2012-01-13 | Lathe machining method of bearing bracket and square box type double-center-distance lathe clamp |
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| CN (1) | CN102554266B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809316A (en) * | 2020-04-26 | 2021-05-18 | 昆明嘉和科技股份有限公司 | Clamping device for pump bearing box and machining method for bearing box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD251518A1 (en) * | 1986-07-31 | 1987-11-18 | Koethen Foerderanlagen Kranbau | DEFLECTION DEVICE FOR BEARING LARGE WITH LARGE DIAMETER |
| EP1454691A1 (en) * | 2003-03-04 | 2004-09-08 | Willemin Machines S.A. | Clamping device with elastic joints |
| CN201644818U (en) * | 2010-03-18 | 2010-11-24 | 江苏双达工程技术研究中心有限公司 | Special cutter frame for bearing block lathe machining |
| CN201922293U (en) * | 2011-03-04 | 2011-08-10 | 北京首钢机电有限公司 | Rapid center positioning device for half-body parts |
| CN202087838U (en) * | 2011-05-24 | 2011-12-28 | 黄荷市 | Machining lathe for bottom surface of bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6179506A (en) * | 1984-09-27 | 1986-04-23 | Toshiba Corp | Chuck unit |
-
2012
- 2012-01-13 CN CN 201210020763 patent/CN102554266B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD251518A1 (en) * | 1986-07-31 | 1987-11-18 | Koethen Foerderanlagen Kranbau | DEFLECTION DEVICE FOR BEARING LARGE WITH LARGE DIAMETER |
| EP1454691A1 (en) * | 2003-03-04 | 2004-09-08 | Willemin Machines S.A. | Clamping device with elastic joints |
| CN201644818U (en) * | 2010-03-18 | 2010-11-24 | 江苏双达工程技术研究中心有限公司 | Special cutter frame for bearing block lathe machining |
| CN201922293U (en) * | 2011-03-04 | 2011-08-10 | 北京首钢机电有限公司 | Rapid center positioning device for half-body parts |
| CN202087838U (en) * | 2011-05-24 | 2011-12-28 | 黄荷市 | Machining lathe for bottom surface of bearing |
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| CN102554266A (en) | 2012-07-11 |
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Address after: 014010, the Inner Mongolia Autonomous Region Baotou rare earth hi tech Zone Baotou Hope Industrial Park Patentee after: INNER MONGOLIA YUYA TECHNOLOGY CO.,LTD. Address before: 014010, the Inner Mongolia Autonomous Region Baotou rare earth hi tech Zone Baotou Hope Industrial Park Patentee before: BAOTOU JIALONG METAL PRODUCTS LLC |
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Granted publication date: 20131225 Termination date: 20220113 |