JP2008307627A - Polishing device of drum type regulating wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polishing device of a drum type regulating wheel to polish and work a spiral screw groove of the drum type regulating wheel required to centerless-polish a taper roller bearing in high precision. <P>SOLUTION: It is possible to polish and finish the desired spiral screw groove 3 by synchronously controlling motion to rotate the regulating wheel 1, to move it in the axial direction, to rotate a grinding wheel 9 to polish the regulating wheel 1, to revolve it to position at a position corresponding to an outline 2 of the regulating wheel 1 and to move the grinding wheel 9 in a direction to approach or separate from the regulating wheel 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a polishing apparatus for a drum-type adjusting wheel for grinding a helical screw groove of a drum-type adjusting wheel used when centerless polishing a tapered roller bearing.

For centerless polishing of a tapered roller bearing (hereinafter referred to as a workpiece), for example, as shown in FIG. 7, a grinding wheel 8 for sandwiching the workpiece 7 and an adjusting wheel 1 are used. When the workpiece 7 has a cylindrical shape, the adjustment wheel 1 may also have a cylindrical shape, and “Patent Document 1” is known as a known technique.
JP 2006-102909 (FIG. 1)

  As shown in “FIG. 1” and “FIG. 2” of the “polishing apparatus” of “Japanese Patent Laid-Open No. 2006-102909” of “Patent Document 1,” the adjustment wheel (30) is cylindrical. Become. However, in order to perform centerless polishing of the tapered roller bearing 7 shown in FIG. 6, a drum-shaped adjusting wheel 1 is required as shown in FIGS. 7 (a) and 7 (b). The adjusting wheel 1 is usually formed as shown in FIG. 1A, and is formed by forming a drum-like outer contour 2 and a spiral screw groove 3. The spiral screw groove 3 is formed as shown in FIG. ). The spiral thread groove 3 has a cross-sectional shape in which a thread valley bottom surface 4 having a clearance angle of 0 ° to 10 ° with respect to a drum-shaped contour concentric to the outer contour 2 and wall surfaces 5 and 6 standing on both sides thereof are provided. It consists of what to form. The wall surfaces 5 and 6 are substantially perpendicular to the thread valley bottom surface 4, and the thread valley bottom surface 4 and the wall surfaces 5 and 6 are ground simultaneously (in the drawing, the wall surfaces 5 and 6 are orthogonal to each other). .

  An object of the present invention is to provide a polishing apparatus for a drum-type adjusting wheel that automatically and precisely finishes the helical screw groove of the adjusting wheel having the above-described shape.

  In order to achieve the above object, the present invention provides a drum that is disposed opposite to a grinding wheel with the workpiece sandwiched therebetween in order to perform centerless polishing of a tapered roller bearing (hereinafter referred to as a workpiece). A polishing apparatus for an adjustment wheel, in which a helical thread groove is screwed into an outer contour, and the apparatus rotates the adjustment wheel and moves the adjustment wheel in the axial direction thereof and a Z-axis movement mechanism And an A-axis turning mechanism that rotates the grinding wheel for grinding the helical thread groove of the adjusting wheel and rotates the grinding wheel along the drum-like outer contour of the adjusting wheel and B-axis rotation A mechanism unit, an X-axis moving mechanism unit that moves the grindstone in a direction approaching or separating from the adjustment wheel, and a control unit that controls the mechanism units synchronously are provided.

  According to a second aspect of the present invention, there is provided a screw bottom surface in which the spiral thread groove has a clearance angle of 0 ° to 10 ° with respect to the drum-shaped contour concentric with the drum-shaped outer contour, and orthogonal to the screw bottom surface. The outer peripheral shape of the grindstone has the same cross-sectional shape as the screw bottom surface and the wall surface.

  According to the polishing apparatus for a drum-type adjusting wheel according to the first aspect of the present invention, the helical thread groove can be polished and finished in a desired shape and with high accuracy by synchronously controlling each mechanism unit by the control unit. it can.

  According to the polishing apparatus for a drum type adjustment wheel of claim 2 of the present invention, the grinding wheel is formed in the same shape as the spiral thread groove, and the workpiece and the grinding wheel are controlled synchronously, so that the adjustment wheel of a desired form can be obtained with high accuracy. Can be polished.

Embodiments of a polishing apparatus for a drum-type adjusting wheel according to the present invention will be described below in detail with reference to the drawings.
FIG. 2 shows an overall schematic structure of the polishing apparatus 100 of the drum type adjustment wheel. The polishing apparatus 100 for the drum-type adjusting wheel is roughly divided into a Z-axis moving mechanism unit 11 for moving the adjusting wheel 1 in the axial direction thereof, a C-axis rotating mechanism unit 10 for rotating the adjusting wheel 1, and a grindstone 9 for turning. The A-axis turning mechanism 12, the B-axis turning mechanism 13 for positioning the grindstone 9 at a position along the R turning groove 2 of the thread root of the adjusting wheel 1, and the grindstone 9 are close to or away from the adjusting wheel 1. The X-axis moving mechanism unit 14 that moves in the direction and the control unit 15 that synchronously controls the mechanism units 10, 11, 12, 13, and 14. Hereinafter, the structure of each mechanism part will be described sequentially.

  As shown in FIG. 2, the C-axis rotation mechanism unit 10 includes a headstock 16 and a chuck 17 that is attached to the headstock 16 and grips the adjustment wheel 1, and is mounted on a base base 18.

  The Z-axis movement mechanism unit 11 includes a base base 19, a guide rail 20 formed on the upper portion, and bellows 21 and 22 provided near both ends. The base 18 is guided by a guide rail 20 and is formed to move in the Z-axis direction along the guide rail 20 by a driving means 23 such as a servo motor.

  As shown in FIG. 3, the grindstone 9 is pivotally supported by a bearing stand 25 fixed to the front end side (left end in FIG. 3) of the box body 24, and the shape of the spiral screw groove 3 of the adjustment wheel 1 shown in FIG. It consists of what forms the corresponding outer contour.

  As shown in FIGS. 2 and 3, in order to rotationally drive the grindstone 9, it is fixed to the pulley 27 attached to the rotating shaft 26 of the bearing base 25 and the rear end side (right end in FIG. 3) of the box body 24. The motor 29 on the support base 28, the pulley 30 mounted on the motor shaft of the motor 29, the pulley 27, the belt 31 wound around the pulley 30, and the like. The grindstone 9 is driven to rotate by driving the motor 29.

4 and 5 show the B-axis rotation mechanism 13.
The box 24 shown in FIG. 3 is fixed on a rotating table 32, and the rotating table 32 is pivotally supported on the center upper portion of a base table 33 via a rotating support shaft 34. Further, as shown in FIG. 5, a ring-shaped large gear 35 is fixed to the lower surface side of the rotating table 32 so as to be aligned with the rotating support shaft 34. On the other hand, a worm 36a is provided side by side on the rotating shaft 36 provided on the base table 33 side, and a gear 37 that meshes with the worm 36a is arranged on the base table 33 and meshes with the large gear 35, respectively. Further, a motor 38 having a speed reducer is connected to the end of the rotary shaft 36. By driving the motor 38 with the above structure, the gear 37 and the large gear 35 are rotated through the worm 36a, and the rotating table 32 is rotated around the rotating support shaft 34 as shown in FIG. . Thereby, the grindstone 9 can move along the outer contour of the adjustment wheel 1.

  As shown in FIG. 3, the X-axis movement mechanism unit 14 moves the guide rail 40 on the support table 39 that supports the base table 33 of the B-axis rotation mechanism unit 13 and the base table 33 in the X-axis direction. For example, it has a drive means 41, a lead screw shaft 42, a nut-like member 43, and the like. By the operation of the driving means 41, the box body 24 is moved in the X-axis direction via the base table 33, and the grindstone 9 is moved in the proximity or separation direction to the adjustment wheel 1.

  The control unit 15 shown in FIG. 2 controls all of the C-axis rotation mechanism unit 10, the Z-axis movement mechanism unit 11, the A-axis turning mechanism unit 12, the B-axis rotation mechanism unit 13, and the X-axis movement mechanism unit 14. And is configured to perform these synchronous controls.

  Next, the polishing process of the adjusting wheel 1 by the drum type adjusting wheel polishing device 100 of the present invention will be described. First, the A-axis turning mechanism 12 is tilted by the angle of the spiral screw groove 3, and then the grindstone 9 is aligned with the adjustment wheel 1, and then the motor 29 is operated to rotate the grindstone 9. Next, the Z-axis movement mechanism unit 11, the C-axis rotation mechanism unit 10, and the B-axis rotation mechanism unit are operated and the X-axis movement mechanism unit 14 is moved in the X-axis direction. By the synchronous control of these mechanism parts (Z, C, B, X), grinding of the spiral screw groove 3 of the adjusting wheel 1 by the grindstone 9 is performed.

  In the above description, the overall structure of the polishing apparatus 100 for the drum type adjustment wheel has been described. However, the structure of each mechanism unit is not limited to the above-described structure, and those of the same technical category are applied. Of course.

  Although the present invention has a polishing apparatus for an adjusting wheel used when centerless polishing of a tapered roller bearing, the object to be polished is not limited to the adjusting wheel, and various members that require synchronous control as described above. It is also applicable to polishing and has a wide range of use.

The external view (a) of the adjustment wheel grind | polished by the grinding | polishing apparatus of the drum type adjustment wheel of this invention, and an expanded sectional view which shows the cross-sectional shape of the helical screw groove and the grindstone corresponding to this. The top view which shows the whole structure of the grinding | polishing apparatus of the drum type | formula adjustment wheel of this invention. The side view for demonstrating the structure of the A-axis turning mechanism part of the grinding | polishing apparatus of the drum type adjustment wheel of this invention, and the structure of an X-axis moving mechanism part. The front view for demonstrating the B-axis rotation mechanism part of this invention. The top view which shows the detailed structure of the rotation part of the top view of FIG. 4, and a B-axis rotation mechanism part. The perspective view of the taper roller bearing by which centerless grinding | polishing is carried out. The typical side view (a) and top view (b) which show centerless grinding | polishing of a taper roller bearing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adjustment wheel 2 R turning groove of valley bottom 3 Spiral screw groove 4 Bottom face of screw valley 5 Wall surface 6 Wall surface 7 Tapered roller bearing 8 Grinding wheel 9 Grinding wheel 10 C axis rotation mechanism part 11 Z axis moving mechanism part 12 A axis turning mechanism part 13 B axis rotation mechanism unit 14 X axis movement mechanism unit 15 Control unit 16 Main shaft base 17 Chuck 18 Base base 19 Base base 20 Guide rail 21 Bellows 22 Bellows 23 Drive means 24 Box body 25 Bearing base 26 Rotating shaft 27 Pulley 28 Support base DESCRIPTION OF SYMBOLS 29 Motor 30 Pulley 31 Belt 32 Rotating stand 33 Base stand 34 Rotating support shaft 35 Large gear 36 Rotating shaft 37 Gear 38 Motor 39 Support stand 40 Guide rail 41 Drive means 42 Lead screw 43 Nut-like member 100 Drum type adjustment vehicle Polishing equipment

Claims (2)

  Polishing device for adjusting wheel in which a tapered roller bearing (hereinafter referred to as a workpiece) is disposed opposite the grinding wheel with the workpiece sandwiched in order to perform centerless polishing. The apparatus rotates a wheel for grinding the helical thread groove of the adjustment wheel, and a C-axis rotation mechanism and a Z-axis movement mechanism that rotate and move the adjustment wheel in the axial direction thereof. And an A-axis turning mechanism and a B-axis turning mechanism that rotate the grindstone along the drum-like outer contour of the adjustment wheel, and an X that moves the grindstone toward or away from the adjustment wheel. An apparatus for polishing a drum-type adjusting wheel, comprising: a shaft moving mechanism section; and a control section that controls the mechanism sections in synchronization.   The spiral screw groove has a cross-sectional shape that forms a screw bottom surface having a clearance angle of 0 ° to 10 ° with respect to the drum-shaped contour concentric with the drum-shaped outer contour, and a wall surface orthogonal to the screw bottom surface. 2. The polishing apparatus for a drum-type adjusting wheel according to claim 1, wherein an outer peripheral shape of the grindstone has the same cross-sectional shape as that of the screw bottom surface and the wall surface.

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