JPH1170447A - Grinding method of surfaces of work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a highly efficient grinding when the surfaces of a work are ground using the end surface of a rotating grinding wheel. SOLUTION: A cup-shaped grinding wheel 14 rotating about a rotating shaft 13 grinds the surface 12 of a work 11 using its end surface. In this case, the rotating shaft 13 of the grinding wheel 14 is tilted by an angle of α to a grinding wheel rear acting part Q side relative to a, normal line to a reference plane of the work 11 so that a difference in cut depth between a shallowest part (a) on a grinding wheel front acting part P side and a deepest part (b) on the grinding wheel rear acting part Q side becomes (h) so as to distribute the grinding removal action of the work 11 between a grinding wheel front acting part P and the grinding wheel rear acting part Q. Thus highly efficient grinding is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of grinding a surface of a workpiece, and more particularly, to a method of grinding a surface of a workpiece using an end surface of a rotating cup-shaped grinding wheel.

[0002]

2. Description of the Related Art Conventional methods for grinding a workpiece surface include:
A conventional method of grinding a surface of a workpiece as shown in FIG.
That is, there is a method of grinding the surface 2 of the workpiece 1 using the end surface of the cup-shaped grinding wheel 4 that rotates around the rotation axis 3 (cup grinding method). In FIG. 10, the workpiece 1 is sent to the grinding wheel 4 in the direction of arrow A in FIG. 10, and in this case, the rotary shaft of the grinding wheel 4 is required to finish the surface 2 of the workpiece 1 with good grinding. It is necessary to grind the workpiece 3 and the reference plane of the workpiece 1 at right angles to each other. Surface 2 where this grinding was done
Is a flat surface, and the grinding streak of the grinding wheel 4 has a traverse shape (FIG. 1).
0 (b)).

In general, in the cup grinding, a large amount of grinding heat is generated, which is caused by frictional heat generated when the end surface of the grinding wheel 4 acts on the surface 2 of the workpiece 1. Is believed to be something. In the conventional method for grinding the surface of a workpiece, the end surface of the grinding wheel 4 is usually formed as a flat surface at first, and becomes a convex protruding surface as shown in FIG. FIG. 11 shows a grinding state when the cutting depth t of the grinding wheel 4 is set. In this case, the entire convex protruding surface of the grinding wheel 4 constitutes a contact area with the workpiece 1. The zone includes a grinding zone (i) in which a grinding action mainly occurs and a friction zone (ii) in which a friction action mainly occurs. The grinding action area (i) is located on the outer peripheral portion of the end face of the grinding wheel 4 on the grinding wheel front working portion P side (FIG. 10B), and the friction action area (ii) is located inside the end face of the grinding wheel 4. . The grinding action is mainly performed in the grinding action area (i),
In the friction action area (ii), the heat is hardly generated and frictional heat is generated.

Therefore, as a method of reducing the friction action area (ii) to reduce the frictional heat, a first conventional technique in which the rotating shaft 3 of the grinding wheel 4 is inclined toward the front working portion P of the grinding wheel, and a grinding wheel. A second prior art is known in which a concave protruding surface is formed on the end face of the grinding wheel 4 so as to protrude toward the periphery thereof to reduce the contact surface with the surface 2 of the workpiece 1 inside the end face of the grinding wheel 4.

[0005]

However, as in the first prior art, when the rotating shaft 3 of the grinding wheel 4 is tilted toward the grinding wheel front working portion P side of the workpiece 1, the grinding wheel 4
As a result, the finished surface of the workpiece 1 becomes concave, and the grinding streaks become streaks, making it impossible to obtain a good finished surface. Further, since the grinding action is performed only on the grinding wheel front working portion P side of the grinding wheel 4 and not performed on the grinding wheel speed portion acting portion Q of the grinding wheel 4, the grinding efficiency is limited.

On the other hand, as in the second prior art, a concave protruding surface is formed on the end face of the grinding wheel 4 so as to protrude toward the periphery, and a contact surface with the surface 2 of the workpiece 1 inside the end face of the grinding wheel 4. In the method for reducing the grinding wheel, the surface 2 of the ground workpiece 1 has a fine grinding surface with grinding streaks, and the grinding wheel 4
The grinding efficiency is limited by the wear of the steel, the grinding heat, and the like. In this method, at first glance, the entire contact area of the end face of the grinding wheel 4 (portions indicated by P and Q in FIG. 11) seems to be effectively performing the grinding action. The removal operation is performed on the grinding wheel front working portion P side of the grinding wheel 4 and only a slight removal action is performed on the grinding wheel rear working portion Q side of the grinding wheel 4, and the grinding action is unbalanced between the P side and the Q side. And the grinding efficiency is limited.

The above description is an example of surface grinding of the surface 2 of the workpiece 1. However, the same problem occurs in the case of grinding the end face of a ring or a cylinder.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has as its object to realize high-efficiency grinding when grinding the surface of a workpiece using the end face of a rotating grinding wheel. An object of the present invention is to provide a method of grinding a surface of a workpiece which can be performed.

[0009]

According to a first aspect of the present invention, there is provided a method for grinding a surface of a workpiece using an end surface of a rotating grinding wheel. In the method of grinding a surface of a workpiece, the surface of the workpiece is ground by an end face of the grinding wheel while tilting a rotation axis of the grinding wheel toward a rear working portion of a grinding wheel with respect to a normal to a reference plane of the workpiece. It is characterized by doing.

According to the method of grinding a work surface according to the first aspect of the present invention, the end surface of the grinding wheel is tilted while the rotation axis of the grinding wheel is inclined toward the rear working portion of the grinding wheel with respect to the normal to the reference plane of the workpiece. Since the surface of the workpiece is ground, the grinding and removing action of the workpiece can be distributed to the front working portion of the grinding wheel and the rear working portion of the grinding wheel. High-efficiency grinding can be realized when grinding a surface.

Further, the surface ground as described above has a concave shape on the finished surface of the workpiece, similarly to the method according to the first prior art, and the grinding streaks have a streak shape. Therefore, it is preferable to further grind the end surface of the grinding wheel while holding the rotation axis perpendicular to the normal line. As a result, the surface of the workpiece can be ground with high precision.

The above-described method for grinding a surface of a workpiece includes a method for grinding a surface of a workpiece including a rotating grinding wheel and support means for supporting the grinding wheel to grind the surface of the workpiece at an end surface of the grinding wheel. In the grinding device, the support means includes a first attitude in which a rotation axis of the grinding wheel is inclined toward a rear working portion side with respect to a normal to a reference plane of the workpiece, and the rotation axis is aligned with the normal. The grinding wheel may be configured to support the grinding wheel so as to selectively take a second attitude perpendicular to the workpiece.

[0013] The alignment means includes a bed for supporting the workpiece, a support member for supporting the grinding wheel to grind a surface of the workpiece at an end surface of the grinding wheel, and the grinding wheel having the first attitude. Preferably, an alignment mechanism is provided for connecting the support member and the bed while performing alignment, so that the bed and the second posture can be selectively taken.

The alignment mechanism includes a leaf spring for connecting the support member and the bed, and a second spring provided on the bed for restricting the movement of the support member so that the grinding wheel takes the first attitude. The bed may include a first stopper and a second stopper provided on the bed to restrict movement of the support member such that the grinding wheel takes the second posture.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is an explanatory view of a method for grinding a surface of a workpiece according to a first embodiment of the present invention, and FIG. 1 (a) is a grinding wheel used in the method. And (b) is a plan view of the same, and (c) is an end view of the ground side of the workpiece. In FIG. 1, a workpiece 11 has a rectangular parallelepiped shape, and a cup-shaped grinding wheel 14 that rotates around a rotation axis 13 uses the end surface thereof to grind the surface 12 of the workpiece 11 (cup grinding method). The workpiece 11 is sent to the grinding wheel 14 in the direction of arrow B in FIG. The grinding wheel 14 has a concave protruding surface protruding toward its periphery at its end face, and the workpiece 11 inside the end face of the grinding wheel 14 is formed.
The contact surface with the surface 12 is reduced. Also, the grinding wheel 14
The cutting depth h at the shallowest part a on the grinding wheel front working part P side (FIG. 1 (b)) is substantially equal to the cutting depth in the conventional case, for example, 2.5 μm. The cut amount is adjusted so that the surface 12 of 11 is ground.
Further, the rotating shaft 13 of the grinding wheel 14 is provided with a grinding wheel front action part P.
So that the difference in cutting depth between the shallowest part a on the side and the deepest part b on the grinding wheel rear working part Q side is h, the grinding wheel rear working part Q side with respect to the normal to the reference plane of the workpiece 11. The angle α is inclined, for example, 0.0014 ° (D = 100 mm).
The angle α is represented by α = tan ⁻¹ (h / D). However,
D is the outer diameter of the grinding wheel 14. Thereby, the workpiece 11
Approximately half of the total grinding removal amount is removed by the grinding wheel front working portion P, and the other half is removed by the grinding wheel rear working portion Q. As a result, the grinding removal amount of the workpiece 11 can be equalized between the grinding wheel front working portion P and the grinding wheel rear working portion Q. As a result, the grinding of a depth of 2 h, which is almost twice as much as the conventional one, can be performed at one time. The removal amount can be obtained.

As described above, the surface 12 of the workpiece 11 ground by inclining the rotating shaft 13 of the grinding wheel 14 toward the rear working portion Q side of the grinding wheel 14 becomes concave (FIG. 1 (c)). The grinding streaks become streaks (FIG. 1 (b)). In the case of reciprocating grinding, the cutting amount h is the same as the conventional one when returning.

After the above-mentioned grinding (rough grinding) is repeated a predetermined number of times and completed, the surface 12 of the workpiece 11 is ground by setting the rotating shaft 13 of the grinding wheel 14 to be perpendicular to the reference plane of the workpiece 11 and grinding with high precision. Finish. In this case, it is needless to say that the cut depth is the minimum necessary amount.

(Second Embodiment) FIG. 2 is an explanatory view of a method for grinding a surface of a workpiece according to a second embodiment of the present invention, and FIG. 2 (a) shows a grindstone used in the method. 2A and 2B are longitudinal sectional end views of the workpiece, FIG. 2B is a plan view of the same, and FIG. 2C is a longitudinal sectional end view in a direction perpendicular to FIG. In the figure, a workpiece 21 has a ring shape having a flange protruding in the axial direction on an outer peripheral portion and a cutout hole in a central portion.

In FIG. 2, a cup-shaped grinding wheel 24 that rotates around a rotating shaft 23 uses a work piece 21 by using its end face.
Is ground (cup grinding method). Workpiece 21
Is rotated in the direction of arrow C in FIG. The grinding wheel 24 has a concave protruding surface protruding toward its peripheral portion on the end surface thereof to reduce the contact surface with the end surface 22 of the workpiece 21 inside the end surface of the grinding wheel 24.

2 (a) and 2 (b).
(C) It is fed in the direction of the middle arrow D to give a grinding cut.

For example, if the feed speed of the grinding wheel 24 is 50
μm / sec, and the rotational feed speed of the workpiece 21 is 10 rpm
If s, the total cutting depth of the grinding wheel front working portion P ′ and the grinding wheel rear working portion Q ′ is 5 μm per rotation of the workpiece.

Further, the rotating shaft 23 of the grinding wheel 24 has a portion a 'on (r0 + r1) / 2 on the side of the grinding wheel front working portion P'.
And the normal to the reference plane of the workpiece 21 such that the difference in the cutting depth between the part b ′ on the radius (r0 + r1) / 2 on the side of the grinding wheel rear working part Q ′ is h ′ (not shown). The angle α ′, for example, 0.0033 °, is inclined toward the rear working portion Q side of the grinding wheel (FIG. 2C). The angle α ′ is α ′ = tan ⁻¹
(H ′ / Dsinβ). However, D is grinding wheel 2
And β is the opening angle formed by a portion a ′ on the grinding wheel front working portion P ′ side and a portion b ′ on the grinding wheel rear working portion Q ′ side with respect to the rotation center R of the grinding wheel 24. Half (Fig. 2
(B)). In the present embodiment, h ′ = 2.5 μm, D =
In the case of 50 mm and β = 60 °, α ′ = 0.0033 °.

With the above structure, about half of the total removal amount of the workpiece 21 (approximately equal to the amount that can be removed by the conventional technique) is removed by the grinding wheel front working portion P ′, and the other half is removed. It is removed by the grinding wheel rear working portion Q ′, and the grinding and removing action of the workpiece 21 can be distributed to the grinding wheel front working portion P ′ and the grinding wheel rear working portion Q ′.
When the rotational feed speed is constant, the feed speed in the direction of arrow D can be set to almost double the conventional speed, and high-efficiency grinding can be realized.

As described above, the surface 22 of the workpiece 21 ground by tilting the rotating shaft 23 of the grinding wheel 24 toward the rear working portion Q 'side of the grinding wheel 24 becomes concave, and the grinding streak is It becomes a streak (FIG. 2 (b)).

After the completion of the grinding, the rotating shaft 23 of the grinding wheel 24 is perpendicular to the reference plane of the workpiece 21, and the end face 22 of the workpiece 21 is ground to perform high-precision grinding. In this case, it is needless to say that the cut depth is the minimum necessary amount.

Although the above embodiment is directed to a ring-shaped workpiece 21 having a flange protruding in the axial direction on the outer peripheral portion and having a cutout hole in the central portion, the present invention is applied to a ring without a flange or a cylindrical member. Can also be applied.

An embodiment of an apparatus for performing the above-mentioned grinding method will be described below with reference to the drawings.

FIGS. 3 and 4 show the second embodiment of the present invention, respectively.
1 shows a configuration of a grinding apparatus that performs a method of grinding a surface of a workpiece according to the embodiment. In the figure, a workpiece 31 has a ring shape having a flange protruding in the axial direction on an outer peripheral portion and a cutout hole in a central portion, and is supported by a spindle head 35 so as to be rotatable around a horizontal axis. Spindle head 35 is table 3
6, and is placed on a bed 37. A motor 38 is mounted on the table 36, and the pulleys of the motor 38 and the spindle head 35 are connected to each other by a belt. Thus, the workpiece 31 is rotated counterclockwise by the motor 38 when viewed from the pulley side.

On the other hand, the cup-shaped grinding wheel 34 has a rotating shaft 33 for grinding the end face 32 of the workpiece 31 using the end face.
Is rotatably supported by a grinding wheel axle head 39,
And it is rotated. The grinding wheel 34 is formed with a concave protruding surface protruding toward its peripheral portion at the end surface thereof to reduce the contact surface with the end surface 32 of the workpiece 31 inside the end surface of the grinding wheel 34. The wheel axle head 39 is mounted on a table 40 via an alignment mechanism 41 described later. The table 40 is placed on a bed 37 and the grinding wheel 3
4 has a function of causing the workpiece 31 to perform a cutting operation.

Hereinafter, the alignment mechanism 41 will be described in detail with reference to FIGS. FIG. 5 is a partial cross-sectional elevation view of the alignment mechanism 41, and FIG. 6 is a cross-sectional view taken along line AA of the alignment mechanism 41 of FIG.

The alignment mechanism 41 has a first posture in which the rotation shaft 33 of the grinding wheel 34 is inclined at an angle α ′ toward the grinding wheel rear working portion Q ′ with respect to the normal to the reference plane of the workpiece 31. It has a function as an alignment mechanism for connecting the grinding wheel axle head 39 to the table 40 while aligning and connecting the grinding wheel axle 39 to the table 40 so as to selectively take the second posture in which the normal 33 is perpendicular to the normal line.

Specifically, the alignment mechanism 41 includes a movable plate 50 for fixing the grinding wheel axle head 39, a fixed plate 51 fixed to the table 40, one end J of the movable plate 50 and one end K of the fixed plate 51. And a leaf spring 53 connecting the other end L of the movable plate 50 and the other end M of the fixed plate 51.
And an actuator 54 for moving the movable plate 51 in the vertical direction.

The leaf spring 52 is fixed to one end J of the movable plate 50 and one end K of the fixed plate 51 by bolts, respectively.
One leaf spring having a size corresponding to the entire width of 0 and the fixed plate 51 may be used, or two leaf springs arranged at intervals from each other. Similarly, the leaf spring 53 is
0 and the other end M of the fixed plate 51 may be fixed by bolts, and may be a single leaf spring having a size corresponding to the entire width of the movable plate 50 and the fixed plate 51. It may be two leaf springs arranged in a vertical direction.

The fixing plate 51 includes stoppers 55a and 55b.
Is provided on the upper surface thereof, and the stoppers 56a and 56b are provided above the stoppers 55a and 55b with the movable plate 50 therebetween.
b. The positions of the stoppers 55a and 55b and the stoppers 56a and 56b are set so as to satisfy the following conditions.

The actuator 54 includes a hydraulic cylinder 57 mounted below the fixed plate 51 and a rod 58 having a piston reciprocating in the hydraulic cylinder 57. The rod 58 has a round bar-shaped head at the opposite end of the piston. The rod 58 penetrates through the fixed plate 51, and the head is engaged with a space formed in the movable plate 50. As a result, when the rod 58 is moved downward by the operation of the actuator 54, the leaf springs 52, 53
And the movable plate 50 is positioned at the contact position (FIG. 6A) with the stoppers 55a and 55b. As a result, the rotating shaft 33 of the grinding wheel 34 It takes a first attitude inclined at an angle α ′ toward the grinding wheel rear working portion Q ′ with respect to the line.

On the other hand, when the actuator 58 is operated to move the rod 58 upward, the leaf springs 52 and 53 move to the position indicated by the two-dot chain line in FIG.
a and 56b (FIG. 6 (b)), so that the rotation shaft 33 of the grinding wheel 34 takes a second position perpendicular to the normal to the reference plane of the workpiece 31. .

In FIG. 5, the grinding point O of the grinding wheel 34 supported by the grinding wheel shaft head 39 mounted on the movable plate 50 with respect to the workpiece 31 extends from the middle point of the points L and L 'to the point M. If the lengths of the leaf springs 52 and 53 are determined to be on the line and on the extension of the point K and the middle point of the point J ′ and the point K, the movable plate 50 rotates around the grinding point O. Therefore, the grinding point O does not move with respect to the workpiece 31.

Therefore, the movable plate 50 is connected to the stopper 55a.
The movable plate 50 is positioned at the contact position (FIG. 6A) with the stoppers 56a and 5b.
The grinding finish can be performed by positioning it at the contact position (FIG. 6B) with the 6b.

As a specific example, the grinding cut allowance is 1
In the case of 80 μm, in the case of rough grinding, a depth of cut of 150 μm at a depth direction cutting speed of 5 μm per work rotation.
m, and in the case of finish grinding, the depth of cut is 3 μm at a depth direction cutting speed of 2.5 μm per work rotation.
It can be ground to 0 μm. Compared with the prior art, the cutting speed in the depth direction of the rough grinding, which occupies a large part, can be almost doubled, so that the grinding efficiency can be improved and the precision of the grinding finish can be secured.

Hereinafter, a first modification of the alignment mechanism 41 will be described in detail with reference to FIG. FIG. 7 is an elevation view of a first modified example of the alignment mechanism 41. FIG.

This modification is the same as the above-described alignment mechanism 41 (FIG. 5) except for the following points, and the same components are denoted by the same reference numerals and description thereof is omitted. That is, the alignment mechanism 41 according to the present modification is provided with only the leaf spring 52 without the leaf spring 53, and the stopper 55 is configured such that the rotation shaft 33 of the grinding wheel 34 is positioned on the reference plane of the workpiece 31. Angle α 'on the wheel wheel rear working section Q' side with respect to the normal
The upper surface of the movable plate 50 has an inclination α ′ so as to define the inclination of the movable plate 50 so as to take the inclined first position.
The lower surface is horizontal to define the inclination of the movable plate 50 so that the rotation shaft 33 takes a second position perpendicular to the normal line.

As a result, when the rod 58 is moved downward by the operation of the actuator 54, the leaf spring 52 moves to the solid line position in FIG. 7 and the movable plate 50 is positioned at the contact position with the stopper 55. As a result, The rotation shaft 33 of the grinding wheel 34 takes a first posture inclined at an angle α ′ toward the grinding wheel rear working portion Q ′ with respect to the normal to the reference plane of the workpiece 31.

On the other hand, when the rod 58 is moved upward by operating the actuator 54, the leaf spring 52 moves to the position indicated by the two-dot chain line in FIG. 7 and the movable plate 50 comes into contact with the stopper 56 (FIG. 7). Is positioned. As a result, grinding wheel 3
4 takes a second position in which the rotating shaft 33 is perpendicular to the normal to the reference plane of the workpiece 31.

Hereinafter, a second modification of the alignment mechanism 41 will be described in detail with reference to FIGS. FIG. 8 is a front view of a second modification of the alignment mechanism 41, and FIG. 9 is a side view of the alignment mechanism 41 of FIG.

The present modification is the same as the above-described alignment mechanism 41 (FIG. 5) except for the following points, and the same components are denoted by the same reference numerals and description thereof is omitted. That is, the alignment mechanism 41 according to the present modification includes the leaf springs 52, 5
3, and the stoppers 55a and 55b are not provided,
One end of the movable plate 50 and one end of the fixed plate 51 are pivotally connected by a shaft 60, and the fixed plate 51 is
a and 55b are provided on the upper surface at the other end, and stoppers 56a and 56b are provided above the stoppers 55a and 55b with the movable plate 50 interposed therebetween. Stopper 5
5a and 55b and stoppers 56a and 56b are provided at positions satisfying the following conditions. In the case of this modification, the spindle head 35 and the spindle table 36 in FIG.
A moving mechanism (not shown) for moving the spindle head 35 in the vertical direction is provided between them.

Thus, when the rod 58 is moved downward by the operation of the actuator 54, the movable plate 50 is positioned at a contact position (indicated by a two-dot chain line) with the stopper 55b. As a result, the rotation shaft 33 of the grinding wheel 34 assumes a first posture inclined at an angle α ′ toward the grinding wheel rear working portion Q ′ with respect to the normal to the reference plane of the workpiece 31.

On the other hand, when the rod 58 is moved upward by the operation of the actuator 54, the movable plate 50 is positioned at a position (shown by a solid line) in contact with the stopper 56b. As a result, the rotating shaft 33 of the grinding wheel 34 takes a second position perpendicular to the normal to the reference plane of the workpiece 31.

However, in FIG. 8, the movable plate 50 is
The grinding point O ′ of the grinding wheel 34 with respect to the workpiece 31 when the posture is taken is in the X-axis direction with respect to the grinding point O of the grinding wheel 34 with respect to the workpiece 31 when the movable plate 50 is in the second posture. There is a problem that the workpiece 31 moves away from the workpiece 31 by ΔX and rises by ΔY in the Y-axis direction.

For this reason, the deviation of ΔY is caused by raising the spindle head 35, that is, the workpiece 31 by ΔY by operating the moving mechanism, and the deviation of ΔX is caused by operating the table 40 to move the grinding wheel 34 from the workpiece 31. Offset by approaching.

[0051]

According to the method of grinding a workpiece surface according to the first aspect, the grinding wheel is inclined while the rotation axis of the grinding wheel is inclined toward the rear working portion side of the grinding wheel with respect to the normal to the reference plane of the workpiece. Since the surface of the workpiece is ground by the end face of the grinding wheel, the grinding and removing action of the workpiece can be distributed to the front working portion of the grinding wheel and the rear working portion of the grinding wheel. High efficiency grinding can be realized when grinding the surface of an object.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a method of grinding a surface of a workpiece according to an embodiment of the present invention, wherein (a) is a longitudinal sectional view of a grindstone and a workpiece used in the method, and (b) is FIG.
(C) is an end view of the ground side of the workpiece.

FIG. 2 is an explanatory view of a method of grinding a surface of another workpiece according to the embodiment of the present invention, wherein (a) is a longitudinal sectional end view of a grindstone and a workpiece used in the method, 2B is a plan view of the same, and FIG. 2C is a longitudinal sectional end view in a direction perpendicular to FIG.

FIG. 3 is a plan view of a grinding device that implements a second embodiment of the present invention.

FIG. 4 is a front view of a grinding device that implements a second embodiment of the present invention.

5 is a partial cross-sectional elevation view of the alignment mechanism 41. FIG.

FIG. 6A is a view showing a state in which a movable plate 50 is connected to stoppers 55a and 55a.
5B is a sectional view taken along line AA of the alignment mechanism 41 of FIG. 5 when the movable plate 50 is positioned at a contact position with the stoppers 56a and 56b. FIG. 6 is a sectional view taken along line AA of the alignment mechanism 41 of FIG. 5.

FIG. 7 is a configuration diagram of a first modification of the alignment mechanism 41.

FIG. 8 is a configuration diagram of a second modification of the alignment mechanism 41.

FIG. 9 is a side view of the alignment mechanism 41 of FIG.

10A and 10B are explanatory views of a conventional method for grinding a surface of a workpiece, FIG. 10A is a longitudinal sectional view of a grindstone and a workpiece used in the method, and FIG. 10B is a plan view of the same. .

FIG. 11 is an explanatory view of a grinding wheel used in a conventional method for grinding a work surface.

[Explanation of symbols]

 11, 21, 31 Workpiece 12 surface 13, 23, 33 Rotating shaft 14, 24, 34 Grinding wheel 22, 32 End surface 35 Spindle head 36, 40 Table 37 Bed 38 Motor 39 Grinding wheel shaft head 41 Alignment mechanism 50 Movable plate 51 Fixed Plate 52, 53 Plate spring 54 Actuator 55, 56 Stopper

Claims (1)

[Claims] 1. A method of grinding a surface of a workpiece using an end surface of a rotating grinding wheel, wherein the rotation axis of the grinding wheel is adjusted with respect to a normal to a reference plane of the workpiece. A method of grinding a surface of a workpiece, wherein the surface of the workpiece is ground by an end surface of the grinding wheel while being inclined toward a rear portion of the vehicle.