CN108581840B - Swing aligning structure for feeding circular arc track - Google Patents
Swing aligning structure for feeding circular arc track Download PDFInfo
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- CN108581840B CN108581840B CN201810629137.1A CN201810629137A CN108581840B CN 108581840 B CN108581840 B CN 108581840B CN 201810629137 A CN201810629137 A CN 201810629137A CN 108581840 B CN108581840 B CN 108581840B
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- rolling support
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- circular arc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a swing aligning structure for feeding an arc track, which comprises a fan-shaped swing rotary table and a cross aligning sliding table. The fan-shaped swinging rotary table comprises a base, a fan-shaped swinging plate, a radial rolling support assembly, an outer axial rolling support assembly, an inner axial rolling support assembly and a bearing swinging rotary driving part. The sector swing rotary table is arranged on a lathe bed or a carriage of the grinding machine, the cross aligning sliding table is arranged on the sector swing rotary table, and the cross aligning sliding table is provided with a workpiece headstock or a grinding carriage. The ball bearing ring groove grinding machine provided with the swing aligning structure has the capability of enabling a workpiece to swing reciprocally around the groove arc curvature center or a grinding wheel to swing reciprocally around the forming arc curvature center so as to realize arc track feeding, and profile errors are transmitted in an arc constraint manner between the grinding wheel and the workpiece in the grinding process, so that the profile accuracy of the ball bearing ring groove arc can be effectively ensured.
Description
Technical Field
The invention relates to a swing aligning structure for feeding a ball bearing ring channel forming grinding arc track, and belongs to the technical field of rolling bearing ring precision machining.
Background
Ball bearings play a critical role in mechanical equipment as an important basic component. The indexes of working precision, performance, service life, reliability and the like of various hosts in the fields of equipment manufacture, aerospace, military industry and the like are closely related to the performance of the ball bearing.
The geometric accuracy (dimensional accuracy, profile accuracy, and positional accuracy) of the race channel and the geometric characteristics (surface roughness, surface waviness, etc.) of the channel surface directly affect the rotational accuracy, vibration, and noise of the ball bearing. The final machining process of the ball bearing ring channel is mainly super-lapping machining. Because the rigidity of the process system is weaker, the ultra-fine grinding processing is insensitive to shape and position precision as other finishing processing processes, and the capability of correcting the channel profile error and the position error of the previous working procedure is weaker.
The ball bearing ring groove cut-in grinding has good process system rigidity, and can obtain higher position accuracy. However, because of unconstrained transmission of the profile errors between the grinding wheel and the workpiece, it is difficult to ensure the profile accuracy of the channel.
Because the profile of the ferrule trench is strongly restrained by the swinging and rotating motion of the workpiece, the swinging grinding of the ball bearing ferrule trench has high precision of the profile of the ferrule trench. The early-stage swing head groove grinding machine can realize swing grinding of the ball bearing ring groove, but the 360-degree axial support of the swing rotary table is not matched with a smaller swing angle, so that the grinding carriage is overhung and overhung, and the rigidity of a process system is affected.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a swing aligning structure for arc track feeding, and a ball bearing ring groove grinder provided with the swing aligning structure has the capability of enabling a workpiece to swing reciprocally around the arc curvature center of a groove or the arc curvature center of a forming arc of a grinding wheel so as to realize arc track feeding, and profile errors are transmitted in an arc constraint manner between the grinding wheel and the workpiece in the grinding process, so that the profile precision of the arc of the ball bearing ring groove can be effectively ensured.
In order to overcome the problems in the prior art, the invention provides a swing aligning structure for feeding an arc track, which comprises a sector swing rotary table and a cross aligning sliding table; the fan-shaped swinging rotary table comprises a base, an axial rolling support assembly, a fan-shaped swinging plate, a radial rolling support assembly and a bearing swinging rotary driving part, wherein the axial rolling support assembly consists of an outer axial rolling support assembly and an inner axial rolling support assembly; the base is arranged on a grinder bed or a carriage; the outer axial rolling support component comprises an outer closed-loop boss arranged on the upper surface of the base and an outer closed-loop groove arranged on the lower surface of the fan-shaped swing plate, wherein a gap is arranged between the outer closed-loop boss and the outer closed-loop grooveA set of balls; the inner axial rolling support assembly comprises an inner closed-loop boss arranged on the upper surface of the base and an inner closed-loop groove arranged on the lower surface of the fan-shaped swinging plate, and a group of balls are arranged between the inner closed-loop boss and the inner closed-loop groove; the output shaft of the bearing swing rotation driving part is connected with the sector swing plate through the radial rolling support assembly and is used for driving the sector swing plate to rotate around the rotation axis O of the sector swing rotary table 1 O 2 Performing swinging and rotary motion; the cross aligning sliding table comprises a lower sliding table and an upper sliding table, wherein the base of the lower sliding table is fixed with the sector swinging plate, and the upper sliding table is fixed with the workpiece headstock or the grinding carriage; the positions of the upper sliding table and the lower sliding table of the cross aligning sliding table are adjusted to enable the channel arc curvature center O in the horizontal shaft section of the workpiece on the workpiece headstock or the forming arc curvature center in the horizontal shaft section of the grinding wheel on the grinding wheel frame to be in contact with the rotation axis O of the fan-shaped swing rotary table 1 O 2 Overlapping; the bearing swing and rotation driving part drives the sector swing plate and a cross aligning sliding table and a workpiece headstock or a grinding carriage on the sector swing plate to wind a rotation axis O of the sector swing rotary table 1 O 2 Swinging and rotating movement is carried out to realize feeding along a channel circular arc track of a workpiece or a grinding wheel forming circular arc track; the outer axial rolling support assembly and the inner axial rolling support assembly play a role in axial rolling support for the fan-shaped swinging plate and the cross aligning sliding table together.
Further, the swing aligning structure for feeding the circular arc track of the invention, wherein the cross section of the outer closed loop groove is a scanning surface, the scanning path of the scanning surface is a closed curve formed by sequentially tangent a first outer circular arc section, a first inner circular arc section and first end transition sections on two sides at end points, the centers of the first outer circular arc section and the second inner circular arc section are positioned at the rotation axis O of the fan-shaped swing rotary table 1 O 2 Applying; the scanning contour of the scanning surface is a continuous arc or a discontinuous arc or a V-shaped line segment centering a circle with the radius of curvature equal to that of the balls of the outer axial rolling support assembly; an outer closed-loop boss is arranged on the upper surface of the base,the outer closed loop boss comprises a first outer arc boss, a first inner arc boss and first end bosses on two sides, wherein the first outer arc boss is higher than the first inner arc boss and the first end bosses on two sides in height, and the junction of the first outer arc boss and the first end bosses is in smooth transition with the first end bosses.
When the balls of the outer axial rolling support assembly are positioned on the first outer arc boss, the centers of the balls are positioned on the central line of the outer closed loop groove, and at the moment, the balls are in an axial rolling support state; when the ball is positioned on the first inner arc boss and the first end bosses on two sides, the center of the ball is lower than the center line of the outer closed-loop groove in height, and at the moment, the ball is in a circulating state so as to ensure the continuity of axial rolling support.
The cross section of the inner closed loop groove is a scanning surface, the scanning path of the scanning surface is a closed curve formed by sequentially tangent two ends of a second outer circular arc section, a second inner circular arc section and second end transition sections at two sides, the circle centers of the second outer circular arc section and the second inner circular arc section are positioned at the rotation axis O of the fan-shaped swing rotary table 1 O 2 And (3) upper part. The scanning contour of the scanning surface is a continuous arc or a discontinuous arc or a V-shaped folded line segment centering a circle with the radius of curvature equal to that of the ball of the inner axial rolling support assembly; the upper surface of base is equipped with interior closed loop boss, interior closed loop boss includes second outer circular arc boss, second interior circular arc boss and the second tip boss of both sides, the second interior circular arc boss is higher than in the height second outer circular arc boss and the second tip boss of both sides and in the juncture of second interior circular arc boss and second tip boss extremely second tip boss smooth transition.
When the ball of the inner axial rolling support assembly is positioned on the second inner circular arc boss, the ball center of the ball is positioned on the central line of the inner closed-loop groove, and at the moment, the ball is in an axial rolling support state; when the ball is positioned on the second outer arc boss and the second end bosses on two sides, the center of the ball is lower than the center line of the inner closed-loop groove in height, and at the moment, the ball is in a circulating state so as to ensure the continuity of axial rolling support.
Compared with the prior art, the invention has the beneficial effects that:
the ball bearing ring groove grinding machine provided with the swing aligning structure has the capability of enabling a workpiece to pass through the groove arc curvature center in the horizontal shaft section of the workpiece and enabling an axis perpendicular to the horizontal shaft section or a grinding wheel to pass through the forming arc curvature center in the horizontal shaft section of the workpiece and enabling the axis perpendicular to the horizontal shaft section to swing back and forth so as to realize arc track feeding, and profile errors are transmitted in an arc constraint mode between the grinding wheel and the workpiece in the grinding process, so that the profile accuracy of the ball bearing ring groove arc can be effectively ensured.
Drawings
FIG. 1 is an exploded schematic view of a swing centering structure for circular arc track feed of the present invention;
FIG. 2 is a schematic view of the radial rolling support assembly shown in FIG. 1;
FIG. 3 is an exploded view of the axial rolling support assembly of the present invention;
FIG. 4-1 is a schematic view of a closed loop groove structure on a sector wobble plate according to the present invention;
FIG. 4-2 is a cross-sectional view of the first cross-sectional structure A-A of FIG. 4-1;
FIG. 4-3 is a cross-sectional view of the second cross-sectional structure A-A of FIG. 4-1;
FIG. 4-4 is a cross-sectional view of a third cross-sectional structure A-A in FIG. 4-1;
FIG. 5 is a schematic view of a closed-loop boss structure of an axial rolling support assembly of the present invention;
FIG. 6 is a schematic view of the ball and closed loop boss contact path of the axial rolling support assembly of the present invention;
FIG. 7 is a cross-sectional view of the axial rolling support assembly of the present invention;
FIG. 8 is a schematic diagram of a headstock structure with a swing centering structure for circular arc track feed of the present invention;
FIG. 9 is a schematic diagram of a swing centering structure pre-centering offset position for circular arc track feed in accordance with the present invention;
fig. 10 is a schematic diagram of the aligning and coinciding positions of a swing aligning structure for feeding circular arc tracks.
In the figure:
1-a fan-shaped swing rotary table;
11-a bearing swing rotation driving part, 111-an output shaft;
12-a base;
13-inner axial rolling support assembly, 131-inner closed loop groove, 132-ball, 133-inner closed loop boss, 1331-second outer circular arc boss, 1332-second inner circular arc boss, 1333-second end boss, 134-inner closed loop boss contact path, 1341-outer circular arc contact path, 1342-end transition contact path zone, 1343-inner circular arc contact path;
14-outer axial rolling support components, 141-outer closed-loop grooves, 142-balls, 143-outer closed-loop bosses, 1431-first outer circular arc bosses, 1432-first inner circular arc bosses, 1433-first end bosses, 144-outer closed-loop boss contact paths, 1441-outer circular arc contact paths, 1442-end transition contact path regions, 1443-inner circular arc contact paths;
15-sector wobble plate, 151-outer closed loop groove scan path, 1511-first outer circular arc segment, 1512-first inner circular arc segment, 1513-first end transition segment, 152-inner closed loop groove scan path, 1521-second outer circular arc segment, 1522-second inner circular arc segment, 1523-second end transition segment;
16-radial rolling support components, 161-deep groove ball bearings, 162-shaft sleeves, 1621-inner cylindrical surfaces of the shaft sleeves and 163-swinging shafts;
2-cross aligning slipway, 21-lower slipway, 211-base of lower slipway, 22-upper slipway;
3-planker;
4-a workpiece headstock;
5-a workpiece;
o-channel arc center of curvature, O 1 O 2 -axis of rotation of sector-shaped oscillating turret, O 3 O 4 -an outer cylindrical axis of the workpiece.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the specific embodiments, which are only illustrative of the present invention and are not intended to limit the present invention.
The invention provides a swing aligning structure for circular arc track feeding, which is shown in fig. 1 and comprises a fan-shaped swing rotary table 1 and a cross aligning sliding table 2.
As shown in fig. 1, the sector swing turret 1 includes a base 12, an axial rolling support assembly constituted by an outer axial rolling support assembly 14 and an inner axial rolling support assembly 13, a sector swing plate 15, a radial rolling support assembly 16, and a bearing swing driving member 11.
As shown in fig. 2, the base 12 is mounted on the carriage 3 (or the grinder bed), and the output shaft 111 of the swing and swing driving part 11 fixedly connected with the base 12 is connected with the sector swing plate 15 through the swing shaft 163 of the radial rolling support assembly 16 for driving the sector swing plate 15 around the swing axis O of the sector swing and swing rotary table 1 1 O 2 And performing swinging and rotary motion. The radial rolling support assembly 16 comprises a shaft sleeve 162 fixedly connected with the base 12, a swinging shaft 163 fixedly connected with the sector swinging plate 15, and a pair of deep groove ball bearings 161, wherein the axis O of an inner cylindrical surface 1621 of the shaft sleeve 162 1 O 2 Is the swing rotation axis of the fan-shaped swing rotary table 1.
As shown in fig. 3, the outer axial rolling support assembly 14 includes an outer closed loop boss 143 provided on the upper surface of the base 12, an outer closed loop groove 141 provided on the lower surface of the sector-shaped swing plate 15, and a set of balls 142 interposed between the outer closed loop boss 143 and the outer closed loop groove 141. The inner axial rolling support assembly 13 includes an inner closed-loop boss 133 provided on the upper surface of the base 12, an inner closed-loop groove 131 provided on the lower surface of the sector-shaped swing plate 15, and a set of balls 132 interposed between the inner closed-loop boss 133 and the inner closed-loop groove 131.
As shown in fig. 4-1, the cross section of the outer closed loop groove 141 is a scanning surface, and the scanning path 151 of the scanning surface is a first end formed by a first outer circular arc section 1511, a first inner circular arc section 1512 and two sidesThe two transition sections 1513 are formed into closed curves with sequentially tangent end points, and the centers of the first outer circular arc section 1511 and the second inner circular arc section 1512 are positioned at the rotation axis O of the fan-shaped swing rotary table 1 1 O 2 Applying; the scan profile of the scan surface is a V-shaped segment that centers a circle having a radius of curvature equal to the radius of the balls 142 of the outer axial rolling support assembly 14, as shown in fig. 4-4, (either a continuous arc as shown in fig. 4-2 or an intermittent arc as shown in fig. 4-3), defining the center locus of the circle as the center line of the outer closed-loop groove 141.
As shown in fig. 5, the upper surface of the base 12 is provided with an outer closed-loop boss 143, the outer closed-loop boss 143 includes a first outer arc boss 1431, a first inner arc boss 1432, and first end bosses 1433 on both sides, the first outer arc boss 1431 is higher than the first inner arc boss 1432 and the first end bosses 1433 on both sides in height, and the junction between the first outer arc boss 1431 and the first end bosses 1433 is smoothly transited to the first end bosses 1433.
As shown in fig. 6, a set of balls 142 is disposed between the outer closed-loop boss 143 and the outer closed-loop groove 141; when the balls 142 of the outer axial rolling support assembly 14 are located on the outer closed-loop boss 143, the contact path 144 between the balls 142 and the outer closed-loop boss 143 is composed of an outer arc contact path 1441 located on the outer arc boss 1431, an inner arc contact path 1443 located on the inner arc boss 1432, and two side end transitional contact path regions 1442 located on the two side end bosses 1433 and connecting the outer arc contact path 1441 and the inner arc contact path 1443.
As shown in fig. 7, when the balls 142 of the outer axial rolling support assembly 14 are located on the first outer arc boss 1431, the centers of the balls 142 are located on the central line of the outer closed loop groove 141, and at this time, the balls 142 are in an axial rolling support state; when the balls 142 are positioned on the first inner arc boss 1432 and the first end bosses 1433 at both sides, the center of the balls 142 is lower than the center line of the outer closed loop groove 141 in height, and at this time, the balls 142 are in a circulating state to ensure the continuity of the axial rolling support.
As shown in fig. 4-1, the cross section of the inner closed-loop groove 131 is a scanning surface, the scanning path 152 of the scanning surface is a closed curve formed by sequentially tangent two by two at the end points of a second outer arc segment 1521, a second inner arc segment 1522 and second end transition segments 1523 on both sides, and the centers of the second outer arc segment 1521 and the second inner arc segment 1522 are at the rotation axis O of the fan-shaped swing rotary table 1 1 O 2 And (3) upper part. The scan profile of the scan surface is a V-shaped folded line segment centering a circle with a radius of curvature equal to that of the ball 132 of the inner axial rolling support assembly 13, as shown in fig. 4-4 (either a continuous circular arc as shown in fig. 4-2 or an intermittent circular arc as shown in fig. 4-3)), and defines a circular center locus of the circle as a center line of the inner closed loop groove 131.
As shown in fig. 5, the inner closed loop boss 133 disposed on the upper surface of the base 12 includes a second outer arc boss 1331, a second inner arc boss 1332, and second end bosses 1333 on both sides, and the second inner arc boss 1332 is higher in height than the second outer arc boss 1331 and the second end bosses 1333 on both sides and smoothly transitions to the second end bosses 1333 at the interface between the second inner arc boss 1332 and the second end bosses 1333.
As shown in fig. 6, the balls 132 of the inner axial rolling support assembly 13 are disposed between the inner closed-loop boss 133 and the inner closed-loop groove 131, and when the balls 132 are disposed on the inner closed-loop boss 133, the contact path 134 between the balls 132 and the inner closed-loop boss 133 is composed of an outer arc contact path 1341 disposed on the outer arc boss 1331, an inner arc contact path 1343 disposed on the inner arc boss 1332, and two side end transition contact path regions 1342 disposed on the two side end bosses 1333 and connecting the outer arc contact path 1341 and the inner arc contact path 1343.
As shown in fig. 7, when the balls 132 of the inner axial rolling support assembly 13 are positioned on the second inner circular arc boss 1332, the centers of the balls 132 are on the central line of the inner closed loop groove 131, and at this time, the balls 132 are in an axial rolling support state; when the balls 132 are positioned on the second outer arc boss 1331 and the second end bosses 1333 at both sides, the center of the balls 132 is lower in height than the center line of the inner closed-loop groove 131, and at this time, the balls 132 are in a circulating state to ensure the continuity of the axial rolling support.
The output shaft 111 of the bearing swing and swing driving part 11 is connected with the sector swing plate 15 through the radial rolling support assembly 16 and is used for driving the sector swing plate 15 to rotate around the swing axis O of the sector swing rotary table 1 1 O 2 And performing swinging and rotary motion.
As shown in fig. 8, the cross aligning sliding table 2 includes a lower sliding table 21 and an upper sliding table 22, wherein a base 211 of the lower sliding table 21 is fixed with the fan-shaped swinging plate 15, and the upper sliding table 22 is fixed with the workpiece headstock 4 or the grinding carriage; as shown in fig. 9 and 10, the center of curvature O of the channel arc in the horizontal axis section of the workpiece 5 on the workpiece head frame 4 (or the center of curvature of the forming arc in the horizontal axis section of the grinding wheel on the grinding wheel frame) and the rotation axis O of the fan-shaped swing rotary table 1 can be made by adjusting the positions of the upper slide table 22 and the lower slide table 21 of the cross-shaped aligning slide table 2 1 O 2 Superposition, O in the figure 3 O 4 Is the axis of the outer cylindrical surface of the workpiece, the bearing swing rotary driving part 11 drives the sector swing plate 15 and the cross aligning sliding table 2 and the workpiece headstock 4 (or the grinding carriage) on the sector swing plate to wind the rotary axis O of the sector swing rotary table 1 1 O 2 And the swinging and rotary motion is performed to realize feeding along the arc track of the channel (or the arc track formed by the grinding wheel) of the workpiece 5.
In the invention, the outer axial rolling support assembly 14 and the inner axial rolling support assembly 13 jointly play a role in axial rolling support for the sector swing plate 15 and the cross aligning sliding table 2.
Although the invention has been described above with reference to the accompanying drawings, the invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by those of ordinary skill in the art without departing from the spirit of the invention, which fall within the protection of the invention.
Claims (3)
1. The swing aligning structure for feeding the arc track comprises a fan-shaped swing rotary table (1) and a cross aligning sliding table (2); it is characterized in that the method comprises the steps of,
the fan-shaped swing rotary table (1) comprises a base (12), an axial rolling support assembly formed by an outer axial rolling support assembly (14) and an inner axial rolling support assembly (13), a fan-shaped swing plate (15), a radial rolling support assembly (16) and a bearing swing rotary driving part (11);
the base (12) is arranged on the grinder bed or the carriage (3); the outer axial rolling support assembly (14) comprises an outer closed-loop boss (143) arranged on the upper surface of the base (12) and an outer closed-loop groove (141) arranged on the lower surface of the fan-shaped swinging plate (15), and a group of balls (142) are arranged between the outer closed-loop boss (143) and the outer closed-loop groove (141); the inner axial rolling support assembly (13) comprises an inner closed-loop boss (133) arranged on the upper surface of the base (12) and an inner closed-loop groove (131) arranged on the lower surface of the fan-shaped swinging plate (15), and a group of balls (132) are arranged between the inner closed-loop boss (133) and the inner closed-loop groove (131); the output shaft (111) of the bearing swing rotation driving part (11) is connected with the sector swing plate (15) through the radial rolling support assembly (16) and is used for driving the sector swing plate (15) to rotate around the rotation axis O of the sector swing rotary table (1) 1 O 2 Performing swinging and rotary motion;
the cross section of the outer closed loop groove (141) is a scanning surface, the scanning path (151) of the scanning surface is a closed curve formed by sequentially tangent to a first outer circular arc section (1511), a first inner circular arc section (1512) and first end transition sections (1513) at two sides at end points, the circle centers of the first outer circular arc section (1511) and the first inner circular arc section (1512) are positioned at the rotation axis O of the fan-shaped swing rotary table (1) 1 O 2 Applying; the scanning profile of the scanning surface is a continuous arc or a discontinuous arc or a V-shaped line segment centering a circle with the radius of curvature equal to that of the balls (142) of the outer axial rolling support assembly (14);
the outer closed loop boss (143) comprises a first outer arc boss (1431), a first inner arc boss (1432) and first end bosses (1433) at two sides, wherein the first outer arc boss (1431) is higher than the first inner arc boss (1432) and the first end bosses (1433) at two sides in height, and smoothly transits to the first end bosses (1433) at the junction of the first outer arc boss (1431) and the first end bosses (1433);
the cross section of the inner closed loop groove (131) is a scanning surface, the scanning path (152) of the scanning surface is a closed curve formed by sequentially tangent two by two at the end points of a second outer circular arc section (1521), a second inner circular arc section (1522) and second end transition sections (1523) at two sides, and the circle centers of the second outer circular arc section (1521) and the second inner circular arc section (1522) are positioned at the rotation axis O of the fan-shaped swing rotary table (1) 1 O 2 Applying; the scanning profile of the scanning surface is a continuous arc or a discontinuous arc or a V-shaped line segment centering a circle with the radius of curvature equal to that of the ball (132) of the inner axial rolling support assembly (13);
the inner closed loop boss (133) comprises a second outer circular arc boss (1331), a second inner circular arc boss (1332) and second end bosses (1333) on two sides, wherein the second inner circular arc boss (1332) is higher than the second outer circular arc boss (1331) and the second end bosses (1333) on two sides in height and smoothly transits to the second end bosses (1333) at the juncture of the second inner circular arc boss (1332) and the second end bosses (1333);
the cross aligning sliding table (2) comprises a lower sliding table (21) and an upper sliding table (22), a base (211) of the lower sliding table (21) is fixed with the sector-shaped swinging plate (15), and the upper sliding table (22) is fixed with the workpiece headstock (4) or the grinding carriage;
the positions of an upper sliding table (22) and a lower sliding table (21) of the cross aligning sliding table (2) are adjusted to enable a channel arc curvature center O in a horizontal shaft section of a workpiece (5) on a workpiece headstock (4) or a forming arc curvature center in a horizontal shaft section of a grinding wheel on a grinding wheel frame and a rotation axis O of the fan-shaped swing rotary table (1) 1 O 2 Overlapping;
the bearing swing rotation driving part (11) drives the sector swing plate (15), and the cross aligning sliding table (2) and the workpiece headstock (4) on the sector swing plate) Or the grinding carriage swings the rotation axis O of the rotary table (1) around the sector 1 O 2 Swinging and rotating movement is carried out to realize feeding along a channel arc track or a grinding wheel forming arc track of the workpiece (5);
the outer axial rolling support assembly (14) and the inner axial rolling support assembly (13) jointly play an axial rolling support role on the sector swinging plate (15) and the cross aligning sliding table (2).
2. The swing aligning structure for circular arc track feeding according to claim 1, characterized in that when the balls (142) of the outer axial rolling support assembly (14) are located on the first outer circular arc boss (1431), the centers of the balls (142) are on the center line of the outer closed loop groove (141), and at this time, the balls (142) are in an axial rolling support state; when the balls (142) are positioned on the first inner circular arc boss (1432) and the first end bosses (1433) on two sides, the center of the balls (142) is lower than the center line of the outer closed-loop groove (141) in height, and at the moment, the balls (142) are in a circulating state so as to ensure the continuity of axial rolling support.
3. A swing aligning structure for circular arc track feeding according to claim 1, characterized in that when the balls (132) of the inner axial rolling support assembly (13) are located on the second inner circular arc boss (1332), the centers of the balls (132) are on the center line of the inner closed loop groove (131), and at this time, the balls (132) are in an axial rolling support state; when the balls (132) are positioned on the second outer arc boss (1331) and the second end bosses (1333) on the two sides, the center of the balls (132) is lower than the center line of the inner closed-loop groove (131) in height, and at the moment, the balls (132) are in a circulating state so as to ensure the continuity of axial rolling support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810629137.1A CN108581840B (en) | 2018-06-19 | 2018-06-19 | Swing aligning structure for feeding circular arc track |
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| CN201810629137.1A CN108581840B (en) | 2018-06-19 | 2018-06-19 | Swing aligning structure for feeding circular arc track |
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| CN108581840B true CN108581840B (en) | 2023-10-20 |
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