JP3834493B2 - Compound grinding method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for complex grinding a workpiece using a grinding wheel.
[0002]
[Prior art]
Conventionally, when grinding V-grooves, outer peripheral surfaces, end surfaces and tapered surfaces of tool holders, etc., as shown in FIG. It is generally known that the end face 3 and the tapered portion 4 are ground by a cylindrical grinder.
[0003]
[Problems to be solved by the invention]
The conventional grinding method and apparatus described above require two units, a plain type cylindrical grinder that grinds the V-groove and outer peripheral surface exclusively, and an angular type cylindrical grinder that grinds the end surface and taper portion exclusively. The cost increases, and grinding of the V-groove and the outer peripheral surface and the grinding of the end face and the taper portion are performed by another grinding machine. Therefore, the workpiece must be re-chucked, and the dimensional variation is likely to occur. There was a problem that the cycle time became long.
[0004]
[Means for Solving the Problems]
  In order to solve the above-mentioned problem, the structural feature of the invention described in claim 1 is that a first side surface forming a first angle with respect to the axis has a first side which forms a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface having a third angle larger than the first angle is supported around the workpiece axis line and formed at a predetermined distance in the axial direction from the first side surface. And rotationally drive the firstas well asCorresponds to the third aspectFirst and third grinding side surfaces dressed in dimensions, and second grinding side surfaces dressed more by the axial feed grinding allowance than the dimensions corresponding to the second side surfacesIs moved relative to the work piece at a movement angle larger than the second angle and smaller than the first angle with respect to the workpiece, and the first side surface and the third side surface are moved. The first side surface and the third side surface are ground to a predetermined size, and the second side surface isSaidGrinding is performed by the second grinding side face while leaving only the axial feed grinding allowance, and the workpiece and the grinding wheel are relatively fed and moved in the axial direction in a state where the grinding wheel is located at the forward end position. The second side surface is ground by the second grinding side surface by the axial feed grinding allowance.
[0005]
  The structural feature of the invention according to claim 2 is that a first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, A V-groove formed by a second side surface extending at a second angle smaller than the first angle and a third side surface extending at a third angle larger than the first angle, and extending the first and second side surfaces A workpiece having a second outer peripheral surface connecting ends, a third outer peripheral surface forming the bottom of the V-groove, and a fourth outer peripheral surface connecting to the extending end of the third outer surface is supported around the workpiece axis. And rotationally drive the firstas well asThird sideFirst and third grinding surfaces dressed in a dimension corresponding to the second grinding surface, and a second grinding side surface dressed by an axial feed grinding allowance more than the dimension corresponding to the second side surface;Corresponding to each of the first to fourth outer peripheral surfacesDoThe grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed is relatively moved to the forward end position with a movement angle larger than the second angle and smaller than the first angle with respect to the workpiece. The one side surface, the third side surface, and the first to fourth outer peripheral surfaces are ground to a predetermined dimension by the first grinding side surface, the third grinding side surface, and the first to fourth grinding outer peripheral surfaces, and the second side surface is For a given dimensionSaidGrinding is performed by the second grinding side face while leaving only the axial feed grinding allowance, and the workpiece and the grinding wheel are relatively fed and moved in the axial direction in a state where the grinding wheel is located at the forward end position. The second side surface is ground by the second grinding side surface by the axial feed grinding allowance.
[0006]
A structural feature of the invention according to claim 3 is the composite grinding method according to claim 2, wherein the grinding wheel is moved relative to the workpiece at the moving angle, and the first peripheral grinding is performed. The grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that the outer diameter of the first outer peripheral surface ground by the surface has reached a predetermined dimension.
[0007]
  A structural feature of the invention according to claim 4 is the composite grinding method according to any one of claims 1 to 3, wherein the first to third dress side surfaces corresponding to the first to third side surfaces of the workpiece. The dresser formed with a support is rotated around an axis parallel to the workpiece axis, and the grinding wheel is moved relative to the dresser in a direction perpendicular to the axis to the dress advance end position. Then, the first grinding side surface and the third grinding side surface of the grinding wheel are dressed to a predetermined size by the first dress side surface and the third dress side surface, and the second grinding side surface is dressed by the second dress side surface. The dresser and the grinding wheel are moved relative to each other in the axial direction in a state where the grinding wheel is located at the dress advance end position, and the second grinding side surface is moved forward by the second dress side surface. The axial direction FeedMore grinding costIs to dress.
[0008]
  The structural feature of the invention according to claim 5 is that it has a first side surface that forms a first angle with respect to the axis, a second side surface that forms a second angle smaller than the first angle, and is larger than the first angle. A workpiece support device for rotating and driving a workpiece in which a V-groove formed by a third side surface forming a third angle is formed at a predetermined distance in the axial direction from the first side surface around the workpiece axis. And the firstas well asCorresponds to the third aspectFirst and third grinding surfaces dressed in dimensions, and second grinding side surfaces dressed more by an axial feed grinding allowance than the dimensions corresponding to the second side surfacesAnd a first wheel for moving the wheel head relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle. The moving means, the second moving means for relatively moving the workpiece support device and the grindstone table in the axial direction, and the movement of the grindstone table with respect to the workpiece support device by the first moving means. The first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface, and the second side surface is predetermined dimension. AgainstSaidA first feed control means for grinding by the second grinding side face while leaving only an axial feed grinding allowance; and the workpiece support device is moved by the second moving means in the state where the grinding wheel base is located at the forward end position. Second feed control means for feeding and moving the second side surface with respect to the table in the axial direction by the second grinding side surface by the axial feed grinding amount.
[0009]
  A structural feature of the invention according to claim 6 is that a first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, A V-groove formed by a second side surface extending at a second angle smaller than the first angle and a third side surface extending at a third angle larger than the first angle, and extending the first and second side surfaces A workpiece having a second outer peripheral surface connecting ends, a third outer peripheral surface forming the bottom of the V-groove, and a fourth outer peripheral surface connecting to the extending end of the third outer surface is supported around the workpiece axis. A workpiece support device that is rotationally driven, and the firstas well asThird sideFirst and third grinding surfaces dressed in a dimension corresponding to the second grinding surface, and a second grinding side surface dressed by an axial feed grinding allowance more than the dimension corresponding to the second side surface;Corresponding to each of the first to fourth outer peripheral surfacesDoA grinding wheel base that supports and rotates the grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed, and the grinding wheel base with respect to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle. First moving means for relatively moving, second moving means for relatively moving the workpiece support device and the grindstone table in the axial direction, and the grindstone table with respect to the workpiece support device. The first moving means is relatively moved to the forward end position at the moving angle, and the first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first ground side surface and third ground surface. The side surface and the first to fourth grinding outer peripheral surfaces are ground to a predetermined dimension, and the second side surface is ground with respect to the predetermined dimension.SaidFirst feed control means for grinding by the second grinding side face while leaving only an axial feed grinding allowance, and the workpiece support device and the grinding wheel base in the state where the grinding wheel base is positioned at the forward end position. And a second feed control means for moving the second side surface relative to the axial direction by the moving means and grinding the second side surface by the second grinding side surface by the axial feed grinding allowance.
[0010]
A structural feature of the invention according to claim 7 is the composite grinding apparatus according to claim 6, wherein the first moving means is an outer diameter of the first outer peripheral surface ground by the first outer peripheral ground surface. Is that the grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that a predetermined dimension has been reached.
[0011]
[Operation and effect of the invention]
  In the invention according to claim 1 configured as described above, a workpiece having a first side surface and having a V groove formed by the second side surface and the third side surface is driven to rotate around the workpiece axis, The grinding wheel having the first to third grinding side faces is moved relative to the workpiece to the forward end position at a movement angle larger than the second angle formed by the second side face and smaller than the first angle formed by the first side face. The first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface, and the second side surface is ground by the second grinding side surface while leaving only the axial feed grinding allowance, With the grinding wheel positioned at the forward end position, the workpiece and the grinding wheel are moved relative to each other in the axial direction, and the second side is ground by the second grinding side for the axial feed grinding allowance. Forming a first side surface and a V-groove with 3 side can be suppressed low capital expenditure can be ground and dimensional variation occurring between the grinding process because the grinding process is not divided into two grindersCan be eliminated.
[0012]
In the invention according to claim 2 configured as described above, the first through the first side surfaces have the first side surface, the V side groove is formed by the second side surface and the third side surface, and are connected to the first through third side surfaces. A workpiece having four outer peripheral surfaces is rotationally driven around the workpiece axis, and the grinding wheel on which the first to third grinding side surfaces and the first to fourth grinding outer peripheral surfaces are formed has an axis line with respect to the workpiece. The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to a forward end position relatively at a moving angle larger than the second angle and smaller than the first angle formed with the first side surface. Grinding to a predetermined dimension by the grinding side face, the third grinding side face and the first to fourth grinding outer peripheral faces, and grinding the second side face by the second grinding side face while leaving only the axial feed grinding allowance with respect to the predetermined dimension, With the grinding wheel in the forward end position, the workpiece and the grinding wheel are relative to each other in the axial direction. Since the second side surface is ground by an axial feed grinding allowance by the second grinding side surface, it is possible to grind the composite surface with a single grinding device, and the equipment investment cost can be kept low. . In addition, the first to third side surfaces and the first to fourth outer peripheral surfaces can be ground with high accuracy in a short time by one grinder.
[0013]
In the invention according to claim 3 configured as described above, the outer diameter of the first outer peripheral surface becomes a predetermined dimension by moving the grinding wheel relative to the workpiece at a predetermined movement angle. Since it is detected by the measuring device and the grinding wheel is accurately stopped at the forward end position, it is possible to ensure high dimensional accuracy of the first outer peripheral surface and also ensure high dimensional accuracy of other parts by composite grinding. Can do.
[0014]
In the invention according to claim 4 configured as described above, the first to third dress side surfaces of the dresser are rotationally driven around an axis parallel to the workpiece axis, and the grinding wheel is perpendicular to the axis with respect to the dresser. The dressing is moved relative to the dress advance end position in the direction, and the first grinding side surface and the third grinding side surface of the grinding wheel are dressed to a predetermined dimension by the first dress side surface and the third dress side surface, and the second grinding is performed. Dress the side with the second dress side and move the dresser and grinding wheel relative to each other in the axial direction with the grinding wheel positioned at the dress forward end position, and move in the axial relative direction at the forward end position of the grinding wheel. The second grinding surface dresses the second grinding side with the second dressing side by an amount corresponding to the axial feed grinding allowance for grinding the second side of the workpiece. It can be efficiently dress.
[0015]
In the invention according to claim 5 configured as described above, a workpiece having a first side surface and having a V-groove formed by the second side surface and the third side surface is moved around the workpiece axis by the workpiece support device. The grindstone wheel having the first to third grinding side surfaces is rotationally driven and is rotationally driven by being supported on the grindstone table, and the first moving means makes the first side surface larger than the second angle formed by the second side surface. The wheel head is moved relative to the workpiece support device at a movement angle smaller than the first angle, and the first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface. At the same time, the second side surface is ground by the second grinding side surface while leaving only an allowance for feed grinding in the axial direction with respect to a predetermined dimension, and the workpiece support device is axially aligned with respect to the wheel base with the wheel head positioned at the forward end position. Move the second side relative to the direction Since the grinding is carried out by the axial feed grinding allowance on the cut side, it is possible to grind the first side and the second and third sides forming the V-groove with a single grinding machine, thereby reducing the capital investment cost. And because the grinding process is not divided into two grinding machines, the dimensional variation that occurs during the grinding processCan be eliminated.
[0016]
  In the invention which concerns on Claim 6 comprised as mentioned above, it has a 1st side surface and is divided into a 2nd side surface and a 3rd side surface.ThanA workpiece having V-grooves and having first to fourth outer peripheral surfaces connected to the first to third side surfaces is rotationally driven around the workpiece axis by the workpiece support device, and the first to third grinding side surfaces and the The grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed is supported on a grinding wheel base and driven to rotate, and the first moving means makes the axis larger than the second angle formed by the second side surface and by the first angle formed by the first side surface. The grindstone is moved relative to the workpiece support device at a small movement angle, and the first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first grinding side surface, the third grinding side surface, and the first to first side surfaces. The grinding wheel is ground to the predetermined dimension by the fourth grinding outer peripheral surface, and the grinding wheel base is positioned at the forward end position by grinding the second side surface while leaving the second side surface by an axial feed grinding allowance with respect to the predetermined dimension. With the workpiece support device relative to the grinding wheel base in the axial direction Since the second side surface is ground by an axial feed grinding allowance by the second grinding side surface, it is possible to grind the composite surface with a single grinding device and keep the capital investment cost low, The first to third side surfaces and the first to fourth outer peripheral surfaces can be ground with high accuracy in a short time by one grinder.
[0017]
In the invention according to claim 7 configured as described above, the first moving means detects that the outer diameter of the first outer peripheral surface has become a predetermined dimension, and the grinding wheel is moved forward by the signal. Since it is stopped at the position, high dimensional accuracy of the first outer peripheral surface can be secured, and high dimensional accuracy of other parts by composite grinding can be secured.
[0018]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 10 denotes a composite grinding apparatus capable of simultaneously grinding a side surface and an outer peripheral surface of a tool holder, which is a workpiece W, such as a V-groove and a tapered portion, and the X-axis direction on the T-shaped bed 15 ( The workpiece support device 16 is slidably mounted in the left-right direction) and the grindstone base 17 is slidable in the Z-axis direction (front-back direction).
[0019]
The workpiece support device 16 has a table 26 slidably mounted on X-axis guide rails 24, 25 extending in the X-axis direction on a T-shaped bed 15, and a headstock on the table 26. 35 and a tailstock 36 are mounted. A carbide center 37 is attached to the tip of the center shaft of the spindle stock 35 and supports the workpiece W with the carbide center 38 attached to the tailstock 36. A rotating face plate 40 is rotatably supported on the center shaft, and the rotating face plate 40 is rotationally driven by a main shaft motor 34 to rotate the workpiece W around the X-axis line through a rotating metal.
[0020]
As shown in FIG. 3, the workpiece W has a tapered first outer peripheral surface 11 extending in the axial direction, and a radial direction at a first angle α which is 90 degrees from the first outer peripheral surface 11 to the axis. The first side surface 21 that extends, the second side surface 22 that extends at a second angle β that is 60 degrees smaller than the first angle α (90 degrees), and 120 degrees that is larger than the first angle α (90 degrees). A V-groove formed by the third side surface 23 extending at the third angle γ, a second outer peripheral surface 12 connecting the extended ends of the first side surface 21 and the second side surface 22, and a third outer periphery forming the bottom of the V-groove. A fourth outer peripheral surface 14 connected to the extending ends of the surface 13 and the third side surface 23 is formed.
[0021]
On the grindstone base 41 that is inclined and fixed on the T-shaped bed 15, an angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees) is formed with respect to the X-axis direction. Z-axis guide rails 42 and 43 extending in the Z-axis direction are provided, and the grinding wheel platform 17 is slidably mounted on the Z-axis guide rails 42 and 43. A grinding wheel shaft 7 is rotatably supported on the grinding wheel base 17, and a grinding wheel G is mounted on the tip of the grinding wheel shaft 7. The grinding wheel shaft 7 is driven to rotate by a grinding wheel motor 6. On the outer peripheral surface of the grinding wheel G, the first to third grinding side surfaces 71 to 73 and the first to third side surfaces corresponding to the first to third side surfaces 21 to 23 and the first to fourth outer peripheral surfaces 11 to 14 of the workpiece W are provided. Fourth grinding outer peripheral surfaces 61 to 64 are formed.
[0022]
The grinding wheel platform 17 is moved relative to the workpiece support device 16 in the Z-axis direction on the Z-axis guide rails 42 and 43 via the ball screw mechanism 46 by the Z-axis servo motor 45. The grinding wheel platform 17 is supported by the Z-axis guide rails 42 and 43, the Z-axis servo motor 45, the ball screw mechanism 46, and the like at a movement angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees). First moving means 20 is configured to move relative to the device 16. The table 26 of the workpiece support device 16 is moved relative to the grindstone table 17 in the X-axis direction on the X-axis guide rails 24 and 25 via the ball screw mechanism 29 by the X-axis servomotor 28. The X-axis guide rails 24 and 25, the X-axis servo motor 28, and the ball screw mechanism 29 constitute second moving means 30 that relatively moves the workpiece support device 16 and the grindstone table 17 in the axial direction.
[0023]
On the T-shaped bed 15, a measuring device 18 is attached in the vicinity of the center of the front surface opposite to the grinding wheel platform 17 with the workpiece support device 16 interposed therebetween. The measuring device 18 is in contact with the first side surface 21 of the workpiece W to measure the position of the workpiece W in the X-axis direction and the outer diameter measurement of the outer diameter of the first outer peripheral surface 11 during grinding. The apparatus 9 is comprised. The end face measuring device 8 and the outer diameter measuring device 9 can be moved back and forth between a fixed position and a retracted position by an advancing / retreating device (not shown). In the end face measuring device 8 and the external shape measuring device 9, the measuring element contacts the outer diameter of the first side surface 21 and the first outer peripheral surface 11 of the workpiece W at the measuring position, and the built-in differential transformer is the displacement amount of the contacting element. Is detected, and the position of the first side surface 21 in the X-axis direction and the outer diameter of the first outer peripheral surface 11 are output as electric signals to a numerical controller 51 described later. The outer diameter measuring device 9 detects that the outer diameter of the first outer peripheral surface 11 of the workpiece W has been ground to a predetermined size by the first grinding outer peripheral surface 61 of the grinding wheel G, and sends a signal to the numerical control device 51 described later. Is fed back to stop the grinding wheel G at the forward end position 60.
[0024]
The numerical controller 51 is connected to an input device 50 for inputting control commands, machining conditions, and the like. The first and second feed control means 52 and 53 and the first and second dress feed control means 54 and 55 are connected to the numerical control device 51. I have. The feed control means 52 to 55 transmit drive signals from the X-axis and Z-axis drive circuits 57 and 58 to the X-axis and Z-axis servomotors 28 and 45 via the interface 56, and the X-axis and Z-axis servomotors. The X-axis and Z-axis direction positions of the workpiece support device 16 and the grindstone table 17 are detected by the X-axis and Z-axis encoders 27 and 44 from the rotations 28 and 45 and fed back to the numerical control device 51 via the interface 56. It has become. The first feed control means 52 feeds and moves the grindstone platform 17 relative to the workpiece support device 16 to the advance end position 60 at a movement angle larger than the second angle and smaller than the first angle by the first movement means 20. The first side surface 21, the third side surface 23, and the first to fourth outer peripheral surfaces 11 to 14 of the workpiece W are used as the first grinding side surface 71, the third grinding side surface 73, and the first to fourth outer peripheral surfaces of the grinding wheel G. While grinding to a predetermined dimension by the side surfaces 61 to 64, as shown in FIG._{twenty two}) Leave (d_{twenty one}) Grind only.
[0025]
The second feed control means 53 moves the workpiece support device 16 and the grindstone table 17 relatively in the axial direction, that is, in the X-axis direction while the grindstone table 17 is positioned at the forward end position 60, thereby The second side surface 22 of the workpiece W is fed by the second grinding side surface 72 of the grinding wheel G to the remaining axial feed grinding amount (d_{twenty two}) Only to grind. The relative movement amount (L) in the X-axis direction between the grinding wheel platform 17 and the workpiece support device 16 at this time is L = d because the second angle is β degrees._{twenty two}/ Sinα.
[0026]
In the dresser device 19, a rotary shaft 33 is rotatably supported on a dresser base 31, and a diamond roll D is attached to the tip of the rotary shaft 33. The dresser table 31 is fixed to the spindle table 35 of the workpiece support device 16, and the rotary shaft 33 is driven by a dresser drive motor 47, so that the diamond roll D is rotated around the X axis parallel to the workpiece axis. As shown in FIG. 5, the diamond roll D has first to third dress side surfaces 74 to 76 for dressing the first to third grinding side surfaces 71 to 73 of the grinding wheel G, and second to fourth grinding outer circumferences. Second to fourth dress outer peripheral surfaces 65 to 67 for dressing the surfaces 62 to 64 and a large-diameter tapered first dress outer peripheral surface 68 for dressing the first grinding outer peripheral surface 61 are formed. The cross-sectional position dimensions of the first to third dress side surfaces 74 to 76 and the second to fourth dress outer peripheral surfaces 65 to 67 are the first to third side surfaces 21 to 23 and the second to fourth outer peripheral surface 12 of the workpiece W. It is the same as the cross-sectional position dimension of -14. The first dress feeding means 54 feeds and moves the grinding wheel base 17 relative to the workpiece support device 16 by the first moving means 20 to move the first grinding side surface 71 and the third grinding side surface 73 of the grinding wheel G to the first. The first dress side surface 74 and the third dress side surface 76 are dressed to a predetermined size, and the second ground side surface 72 is dressed by the second dress side surface 75 by a predetermined amount. The second dress feed control means 55 moves the workpiece support device 16 and the grindstone table 17 by the second moving means 30 in the state where the grinding wheel G has reached the dress advance end position 69 by the first dress feed control means 54. The second grinding side surface 72 is moved in the axial direction by the dressing movement relative to the axial direction by the second dressing side surface 75 (d_{twenty two}) Dress as much as you need.
[0027]
The operation of the composite grinding apparatus configured as described above will be described together with the composite grinding method based on the flowchart of the operation of the composite grinding apparatus shown in FIG. First, an operator attaches the workpiece W between the carbide center 37 of the headstock 35 and the carbide center 38 of the tailstock 36 of the workpiece support device 16, and attaches the workpiece W to the rotating face plate 40 with a screwdriver. Next, by pressing a start button attached to the numerical control device 51, the grinding cycle of the workpiece W starts. In order to position the workpiece W in the X-axis direction, the end face measuring device 8 of the measuring device 18 is advanced to a fixed position, and the workpiece support device 16 is moved to the right by the X-axis servomotor 28. The first side surface 21 of the workpiece W comes into contact with the probe of the end surface measuring device 8 and the position of the first side surface 21 in the X-axis direction is detected and transmitted to the numerical control device 51 to be compared with the grinding position. When the first side face 21 moves to the grinding position and the detection signal from the end face measuring device 8 coincides with the grinding position, the numerical control device 51 stops the X-axis servo motor 28 to extend the workpiece support device 16 and the workpiece. W is positioned at the grinding position (step 77). When the positioning of the workpiece W in the X-axis direction is completed, the end face measuring device 8 is retracted to the retracted position, the spindle motor 34 is driven, and the workpiece W is rotated by the rotating face plate 40 via the rotating metal (step 78). .
[0028]
The Z-axis servo motor 45 is driven, and the grinding wheel base 17 is guided by the Z-axis guide rails 42 and 43 through the ball screw mechanism 46 and advances toward the workpiece W at a fast feed speed, a rough grinding feed speed, and a fine grinding feed speed. (Step 79), the first to third grinding side surfaces 71 to 73 and the first to fourth grinding outer peripheral surfaces 61 to 64 of the grinding wheel G being driven to rotate by the grinding wheel motor 6 are the first to fourth grinding surfaces of the workpiece W. The three side surfaces 21 to 23 and the first to fourth outer peripheral surfaces 11 to 14 are subjected to rough grinding and fine grinding (step 80). When the first grinding outer peripheral surface 61 slightly coarsely grinds the first outer peripheral surface 11 to remove the black skin, the outer diameter measuring device 9 is advanced to the measurement position, and the contactor contacts the first outer peripheral surface 11. The outer diameter is measured, and an electrical signal corresponding to the outer diameter of the first outer peripheral surface 11 is transmitted to the numerical controller 51. The numerical controller 51 changes the feed rate of the grindstone table 17 from the coarse grinding feed rate to the fine grinding feed rate in accordance with the outer diameter of the first outer circumferential surface 11 input from the outer diameter measuring device 9. When the outer diameter reaches a predetermined dimension, the Z-axis servo motor 45 is stopped, the grinding wheel base 17 is extended, and the grinding wheel G is stopped at the forward end position 60 (step 81). At this time, the second grinding side surface 72 has an axial feed grinding allowance (d_{twenty two}) Is dressed by an amount corresponding to a predetermined amount, so that the second side surface 22 has an axial feed grinding allowance (d_{twenty two}And the second grinding side surface 72 is ground. Subsequently, after the outer diameter measuring device 9 is retracted to the retracted position, the workpiece support device 17 is moved in the X-axis direction with respect to the grindstone table 16 by an amount L = d._{twenty two}/ Sin α is ground and fed, and the second side surface is finished to a predetermined dimension by the second grinding side surface 72 (step 82). Thereafter, the grinding wheel base 17 is moved back to the original position, the workpiece support device 16 is moved to the original position, the rotation of the workpiece W is stopped (step 83), and a series of complex grinding of the workpiece W is completed. .
[0029]
Next, a dressing method and apparatus for the grinding wheel G will be described based on the flowchart of FIG. When the numerical controller 51 is instructed to start dressing, the dressing cycle of the grinding wheel G starts. The workpiece support device 16 and the grindstone platform 17 are positioned at the dress start position, the dress motor 47 is driven, and the diamond roll D is rotated (step 85).
[0030]
The X-axis and Z-axis servomotors 28 and 45 are driven by two-axis control at the same time, and the workpiece support device 16 and the grindstone table 17 are moved via the ball screw mechanisms 29 and 46 to the X-axis and Z-axis guide rails 24, 25 and 42. , 43 and moved in relation to each other, and the first grinding outer peripheral surface 61 of the grinding wheel G rotated by the grinding wheel motor 6 is dressed in a taper shape by the first dress outer peripheral surface 68 of the diamond roll D (step) 86). After dressing the first grinding outer peripheral surface 61, the first to third grinding side surfaces 71 to 73 and the first to third dress side surfaces 74 to 76 are driven in the X-axis direction by driving the X-axis and Z-axis servomotors 28 and 45. The workpiece support device 16 and the grindstone platform 17 are positioned at the positions shown in FIG. Next, the X-axis and Z-axis servomotors 28 and 45 are simultaneously controlled in two axes to move the grinding wheel G forward relative to the diamond roll D in a direction perpendicular to the Z-axis, and the first grinding side surface 71 is moved. End dressing is performed by the first dress side surface 74 (step 87), and the second and third grinding side surfaces 72 and 73 and the second to fourth grinding outer peripheral surfaces 62 to 64 are connected to the second and third dress side surfaces 75 and 75 in the vicinity of the forward end. 76 and the second to fourth dress outer peripheral surfaces 65 to 67 are dressed to a predetermined size (step 88). At the forward end position 69, the Z-axis servo motor 45 and the grinding wheel base 17 are stopped (step 89), and the workpiece support device 16 is moved to the left by the X-axis servo motor 28 in the X-axis direction movement amount L = d._{twenty two}/ Sin α and the second grinding side surface 72 is moved in the axial direction by the second dress side surface._{twenty two}) And finish to a predetermined size (step 90). Finally, the end face 70 and the first dress side face 74 are aligned in the X-axis direction, the grinding wheel G is advanced in the direction perpendicular to the diamond roll D, and the end face 70 is end face dressed by the first dress side face 74 and the grindstone. The dress of the car G is finished (step 91). The grinding wheel base 17 and the workpiece support device 16 are moved to the original positions, and the rotation of the diamond roll D is stopped (step 92).
[0031]
In the above embodiment, the grindstone table 17 is moved at a movement angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees) with respect to the X axis that is the axis of the workpiece support device 16. The Z-axis guide rails 42 and 43 are arranged so as to move in the axial direction. However, the Z-axis guide rail is arranged at a right angle to the X axis, and the grinding wheel base 17 is perpendicular to the X axis. The movement of the workpiece support device 16 and the grindstone table 17 is simultaneously controlled by two axes by numerical control, and the grindstone table 17 is moved relative to the workpiece support device 16 at the aforementioned movement angle. You may do it.
[Brief description of the drawings]
FIG. 1 is a diagram showing a conventional divided grinding process.
FIG. 2 is a plan view of a composite grinding apparatus according to the present invention.
FIG. 3 is a diagram showing the relationship of grinding a workpiece with a grinding wheel.
FIG. 4 is a diagram showing a grinding allowance for a workpiece.
FIG. 5 is a diagram showing the relationship between a grinding wheel and a diamond roll.
FIG. 6 is a diagram showing a grinding process of a workpiece.
FIG. 7 is a diagram showing a dressing process of a grinding wheel.
[Explanation of symbols]
8 ... End face measuring device, 9 ... Outer diameter measuring device, 10 ... Composite grinding device, 11-14 ... First to fourth outer peripheral surfaces, 15 ... T-shaped bed, 16. ..Workpiece support device, 17 ... Wheel head, 18 ... Measurement device, 19 ... Dresser device, 20 ... First moving means, 21-23 ... First to third side surfaces, 26 ... Table, 30 ... Second moving means, 31 ... Dresser base, 35 ... Spindle base, 36 ... Tailstock, 41 ... Grinding wheel base, 51 ... Numerical value Control device, 52, 53 ... first and second feed control means, 54, 55 ... first and second dress feed control means, 60 ... forward end position, 61 to 64 ... first -4th grinding outer peripheral surface, 65-68 ... 1st-4th dress outer peripheral side surface, 69 ... Dress advance end position, 70 ... End surface, 71-73 ... 1st-3rd grinding side surface, 74-76 ... 1st-3rd dress side surface, (alpha) ... 1st angle, (beta) ... 2nd angle, (gamma) ... 3rd angle, D ... Diamond roll, G ... grinding wheel, d_{twenty two}... Axial feed grinding allowance, L ... Axis movement, W ... Workpiece.

Claims (7)

A first side surface having a first angle with respect to the axis and having a second side surface having a second angle smaller than the first angle and a third side surface having a third angle larger than the first angle are formed. A V-shaped groove formed at a predetermined distance in the axial direction from the first side surface is driven to rotate around the workpiece axis, and is dressed in dimensions corresponding to the first and third side surfaces . A grinding wheel having a first grinding surface and a third grinding side surface, and a second grinding side surface that is dressed more than the dimension corresponding to the second side surface by an axial feed grinding allowance, and the second angle with respect to the workpiece. The first side surface and the third side surface are ground to a predetermined size by the first grinding side surface and the third grinding side surface by relatively feeding and moving to a forward end position at a movement angle larger and smaller than the first angle. And the second side surface with respect to a predetermined dimension. Leaving only the axial feed grinding allowance is grinding by the second grinding side causes the grinding wheel relative feed movement of said workpiece in a state of being positioned in the forward end position and the grinding wheel in the axial direction Then, the second side surface is ground by the second grinding side surface by the axial feed grinding amount. A first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, and a second angle extending at a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface extending at a third angle greater than the first angle, a second outer peripheral surface connecting the extending ends of the first and second side surfaces, and the V-groove bottom portion A workpiece formed with a fourth outer peripheral surface connected to an extended end of the third outer peripheral surface and the third outer surface is supported around the workpiece axis, and is driven to rotate. The first and third side surfaces The first and third grinding surfaces dressed to the dimensions corresponding to the second side surface, the second grinding side surfaces dressed more than the dimension corresponding to the second side surface by the axial feed grinding allowance, and the first to fourth the first to grinding wheel fourth grinding the outer peripheral surface is formed respectively corresponding to the outer peripheral surface with respect to the workpiece second The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first grinding side surface, the first outer surface by relatively moving to the forward end position at a movement angle larger than the angle and smaller than the first angle. with grinding to a predetermined size by 3 grinding the side surface and the first to fourth grinding the outer peripheral surface, wherein all but said axial feed grinding allowance of the second side surface to a predetermined size by grinding by the second grinding side face, With the grinding wheel positioned at the forward end position, the workpiece and the grinding wheel are relatively fed and moved in the axial direction so that the second side surface is fed by the second grinding side surface by the axial feed grinding allowance. A composite grinding method characterized by grinding.  3. The composite grinding method according to claim 2, wherein the grinding wheel is moved relative to the workpiece at the moving angle and is ground by the first outer peripheral grinding surface. A composite grinding method, wherein the grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that the diameter has reached a predetermined dimension. 4. The composite grinding method according to claim 1, wherein a dresser formed with first to third dress side surfaces corresponding to the first to third side surfaces of the workpiece is parallel to the workpiece axis. The first grinding side surface of the grinding wheel is supported by rotating around the axis, the dressing wheel is moved relative to the dresser in a direction perpendicular to the axis to the dress advance end position, and the grinding wheel is moved. And the third grinding side is dressed to a predetermined size by the first dress side and the third dress side, the second grinding side is dressed by the second dress side, and the grinding wheel is positioned at the dress forward end position. to many the dresser and in the state with the grinding wheel by said axial feed grinding allowance of the second grinding sides by relatively dress feed movement by said second address side in the axial direction dress The grinding wherein the. A first side surface having a first angle with respect to the axis and having a second side surface having a second angle smaller than the first angle and a third side surface having a third angle larger than the first angle are formed. A workpiece support device that supports and rotates a workpiece having a V-groove formed at a predetermined distance in the axial direction from the first side surface, and dimensions corresponding to the first and third side surfaces. Rotating and driving a grinding wheel having a first grinding surface and a third grinding surface, and a second grinding side surface which is dressed more than the dimension corresponding to the second side surface by an axial feed grinding allowance. A grinding wheel base, first moving means for moving the grinding wheel base relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle, the workpiece support device and the grinding wheel Second moving the table relative to the axial direction Moving the wheel head and the grindstone table relative to the workpiece support device by the first moving means at the moving angle to the forward end position, and moving the first side surface and the third side surface to the first side. with grinding to size by 1 grinding the side surface and the third ground side, a first feed control means for grinding by the second grinding side face leaving only the axial feed grinding allowance of the second side surface relative to a predetermined dimension The workpiece support device is moved in the axial direction with respect to the grinding wheel table by the second moving means in a state where the grinding wheel table is positioned at the forward end position, and the second side surface is moved to the second grinding side surface. And a second feed control means for grinding only the axial feed grinding allowance. A first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, and a second angle extending at a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface extending at a third angle greater than the first angle, a second outer peripheral surface connecting the extending ends of the first and second side surfaces, and the V-groove bottom portion A workpiece support device configured to support and rotate the workpiece having a third outer circumferential surface and a fourth outer circumferential surface connected to the extending end of the third outer surface around the workpiece axis, The first and third grinding surfaces dressed in dimensions corresponding to the first and third side surfaces; the second grinding side surface dressed more than the dimension corresponding to the second side surfaces by an axial feed grinding allowance; and first through by supporting the first through grinding wheel fourth grinding the outer peripheral surface is formed respectively corresponding to the fourth outer peripheral face A grindstone table that is driven to roll, a first moving means that moves the grindstone table relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle, and the workpiece support device. A second moving means for relatively moving the grindstone table in the axial direction; and the grindstone table is relatively moved to the forward end position at the moving angle by the first moving means with respect to the workpiece support device. The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to a predetermined size by the first grinding side surface, the third grinding side surface, and the first to fourth grinding outer peripheral surfaces. the machine tool and the first feed control means for grinding by the second grinding side face leaving only the axial feed grinding allowance for a given size of the second aspect, in a state where the wheel head is positioned at the forward end position Object support device and said abrasive And a second feed control means for grinding the second side surface by the second grinding side surface by the axial feed grinding amount by moving the base relative to the axial direction by the second movement means. A composite grinding apparatus characterized by that.  The composite grinding apparatus according to claim 6, wherein the first moving unit is configured to detect that an outer diameter of the first outer peripheral surface ground by the first outer peripheral ground surface has become a predetermined dimension. The grinding wheel is stopped at the forward end position by a signal of

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