JPH0329096Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention relates to a grinding wheel forming machine, and more specifically, it is possible to simply and easily adjust the stroke amount of the carriage that provides the reciprocating motion of the grinding wheel. Concerning a ground-in grinding wheel forming machine.

(Conventional technology) With the rise of difficult-to-grind materials, the use of diamond wheels as grinding wheels has increased, and on the other hand, high-precision diamond wheels are required for NC forming grinders. However, it was difficult to modify the molding according to the shape.

From the above point of view, a diamond wheel forming machine dedicated to shaping and correcting diamond wheels has been developed and is actually put into practical use.

A diamond wheel forming machine is relatively equipped with a workpiece moving table that holds the diamond wheel and gives it rotation, and a processing device that gives the grinding wheel rotation, cutting, reciprocating motion, and reciprocating turning motion.
Diamond wheels are now being molded.

Therefore, the stroke amount of the carriage that provides reciprocating motion to the grinding wheel of the processing device in the diamond wheel forming machine is adjusted by the operator inserting a jig into an adjustment hole drilled in the upper part of the carriage. was.

(Problem to be solved by the invention) However, the stroke amount adjustment of the carriage mentioned above is done by the operator by inserting a jig into the adjustment hole drilled in the upper part of the carriage. They either rely on their intuition or guess the scale and come up with it on the spot. Therefore, adjusting the stroke amount is very troublesome and often relies on the operator's intuition, which requires the operator's experience and is time-consuming.

In addition, since the grinding is carried out through an adjustment hole drilled in the upper part of the carriage, foreign matter such as grinding fluid and abrasive grains may enter the adjustment hole, adversely affecting machine accuracy and service life.

(Purpose of the invention) The purpose of the invention was proposed in order to improve the problem in view of the above circumstances. It is an object of the present invention to provide a grinding wheel forming machine that prevents foreign matter such as liquid and abrasive grains from entering the machine so as not to adversely affect machine accuracy and life.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a workpiece moving table that rotatably holds a wheel for forming on a bed, and also centers the workpiece moving table on the processing standard. A reciprocating swivel table is provided that can be freely adjusted in the direction toward and away from the position, and can swing back and forth around the processing reference center position, and the reciprocating table mounted on the reciprocating swivel table is moved relative to the processing reference line. Provided to be reciprocatable in orthogonal directions, on the reciprocating table,
A grinding wheel for forming the wheel to be formed is rotatably provided, a stroke adjusting device for adjusting the stroke amount of the reciprocating table is provided inside the reciprocating swivel, and the stroke adjusting device A grinding wheel forming machine is constructed by providing an adjustment operation section below the reciprocating swivel table.

(Function) By employing the grinding wheel forming machine of the present invention, even an unskilled operator can easily and easily adjust the stroke amount of the carriage. In addition, contamination of foreign substances such as grinding fluid and abrasive grains is prevented, improving machine accuracy.
There will be no negative impact on lifespan.

(Embodiments of the invention) Hereinafter, embodiments of the invention will be described in detail based on the drawings.

Referring to FIGS. 1 and 2, for example, a diamond wheel forming machine 1 as a grinding forming machine.
On the left side in Figure 1 above bed 3 in
A base 7 on which a workpiece moving table 5 is placed is erected. A support stand 9 is supported via a bracket 11 on the right side of the base 7 in FIG.
The workpiece moving table 5 is placed on the support table 9. The workpiece moving table 5 includes a cross feed table 13, a cross slide 15, and a diamond wheel support table 1.
It consists of 7 mag.

That is, on the support stand 9, there is a lateral feed stand 13 which is movable in the left-right direction in FIG.
A cross slide 15 is placed on the transverse feed table 13, which is movable in a direction perpendicular to the plane of the paper in FIG. A diamond wheel support 17 is provided on the right side of the cross slide 15 in FIG.
1 is rotatably supported. A diamond wheel DW serving as a grinding wheel to be processed is supported on the upper end of the shaft 21 in FIG. At the bottom of the other end of the shaft 21 in FIG.
A pulley 23 is attached.

Also, on the left side in FIG. 1 on the cross slide 15 is a diamond wheel drive motor 25 for giving rotation to the diamond wheel DW.
is provided via a motor base 27. A pulley 29 is attached to the lower part of the other end of the diamond wheel drive motor 25 in FIG. 2 via an output shaft. A belt 31 is wound around the pulley 23 and pulley 29.

With the above configuration, the diamond wheel DW can be moved within two planes by moving the cross feed table 13 in the left-right direction using the handle 19 and moving the cross slide 15 in a direction perpendicular to the plane of the paper in FIG. It will be positioned. Furthermore, the diamond wheel DW is rotated via the pulley 29, belt 31, and pulley 23 by driving the diamond wheel drive motor 25.

A processing device 33 is provided on the right side of the bed 3 in FIG. The processing device 33 includes a reciprocating swivel table 35 that provides a reciprocating rotational movement to the grinding wheel, and a reciprocating table 3 that provides angular positioning and reciprocating movement to the grinding wheel.
7. It is composed of a cutting table 39 for making a cut in the grinding wheel, a grinding wheel rotation drive motor 41 as a wheel rotation driving device for giving rotation to the grinding wheel, and the like.

That is, on the right side of the bed 3 in FIG. 1, there is mounted a reciprocating swivel table 35 that can freely rotate back and forth about the processing reference center line CL. On the reciprocating swivel table 35, angular positioning can be performed and the first
In the figure, a carriage 37 is mounted that can reciprocate in a direction perpendicular to the plane of the paper. A cutting table 39 is placed on the carriage 37 and is movable in the left-right direction in FIG. 1, that is, in the direction toward and away from the machining reference center line CL. A grinding wheel support stand 43 is erected on the cutting stand 39, and a grinding wheel rotation drive motor 41 is attached to the right side of the grinding wheel support stand 43 in FIG. 1 via a motor base 45. be.

A shaft 47 extending in the left-right direction in FIG. 2 is rotatably supported in the upper portion of the grinding wheel support base 43. A grinding wheel 49 is attached to one end of the shaft 47 on the right side in FIG. 2, and a pulley 5 is attached to the other end of the shaft 47 on the right side in FIG.
1 is installed. Wheel rotation drive motor 41
A pulley 53 is attached to the right side of the other end in FIG. 2 via an output shaft. A belt 55 is wound around the pulley 51 and pulley 53.

With the above configuration, the grinding wheel 49 is
5 is rotated as shown by arrow A in FIG. 2, for example. grinding wheel 49
is reciprocated by moving the reciprocating table 37 in the radial direction of the reciprocating swivel table 35, and the cutting of the grinding wheel 49 is made by moving the reciprocating table 37 in the direction perpendicular to the plane of the paper in FIG. This is done by moving the cutting table 39 one tooth at a time using, for example, a ratchet each time it is reciprocated.

Further, the grinding wheel 49 is rotated at a predetermined number of rotations by driving the grinding wheel rotation drive motor 41.

For example, the tip of the diamond wheel DW is R.
When forming the workpiece into a desired shape, move and adjust the cross feed table 13 and cross slide 15 of the workpiece moving table 5 in the left-right direction and in the direction perpendicular to the plane of the drawing, respectively, and move the diamond wheel.
The processing location, that is, the tip of the DW is set at the pivot center point O (FIG. 2) on the processing reference center line CL of the reciprocating pivot table 35. The reciprocating swivel table 35 is based on the processing reference center line.
It is reciprocated in the direction of arrow A shown in FIG. 2 with CL as the center. The carriage 37 is linearly moved back and forth in a direction perpendicular to the processing reference center line CL. Further, the cutting table 39 is moved by a cutting device (not shown) in the radial direction of the grinding wheel 49 toward the diamond wheel DW (for example, upward in FIG. 2). In other words, the motion of the grinding wheel 49 is such that it rotates and reciprocates in a direction perpendicular to the radial direction of the grinding wheel 49, cutting in the radial direction of the grinding wheel 49 toward the diamond wheel DW, and machining. It turns in the direction of arrow A in FIG. 2 about the turning center point O of the reference center line CL.

The amount R (second
If the grinding wheel 49 performs the above-mentioned movement, the tip of the diamond wheel DW will be R.
molded into a shape.

When molding the outer periphery and side surface of the diamond wheel 49 into an angular shape, the reciprocating swivel table 35 is used.
By fixing the carriage 37, the carriage 37 is fixed at a predetermined angle and cannot be reciprocated in the direction of arrow A in FIG.

While rotating, the grinding wheel 49 provides only a reciprocating motion in a direction perpendicular to the radial direction of the grinding wheel 49 and a cutting motion in the radial direction of the grinding wheel 49.

Thus, the tip of the diamond wheel DW is formed at a predetermined angle.

In FIG. 1 above the bed 3, two hollow cylindrical bodies are installed on both sides via brackets 55A and 55B.
A heavy-duty protective cover 57 is attached,
It plays a role in preventing chips from scattering during molding.

Furthermore, in FIG. 1, an L-shaped support arm 59 is attached to the base 7, and a microscope 63 is provided at the tip of the support arm 59 via a support bar 61. This microscope 63 is used, for example, when aligning the tip of the diamond wheel DW with the processing reference center line CL of the reciprocating swivel table 35.

Next, detailed structures of the reciprocating swivel table 35 and the reciprocating table 37 will be specifically explained with reference to FIGS. 3 and 4.

In FIG. 3, a drive body 65 of the reciprocating swivel table 35, which is made of, for example, a hollow cylindrical shape, is mounted in a hole drilled in the bed 3 and fixed to a mounting base 67 with a plurality of bolts 69. The mounting base 67 is fixed onto the bed 3 with a plurality of bolts 71. A reciprocating pivot shaft 73 is rotatably supported substantially in the center of the drive body 65 via bearings 75A and 75B.

In the lower part of the reciprocating pivot shaft 73 in FIG.
A worm gear 77 is fitted and fixed with a key. The worm gear 77 has a worm 79 extending in a direction perpendicular to the plane of the paper in FIG.
are engaged. A drive device (not shown) is attached to the worm 79.

With the above configuration, the worm 79 is rotated by driving a drive device (not shown). When the worm 79 rotates, the reciprocating pivot shaft 73 is rotated via the worm gear 77 that meshes with the worm 79.

For example, a dog 81 is installed in a radially T-shaped groove bored in the side surface of the upper flange 73F of the reciprocating pivot shaft 73. Also, that dog 81
For example, two proximity switches 83 are installed at close positions where the support arm 8 rotates together with the reciprocating pivot shaft 73.
5 on the bed 3.

Therefore, the reciprocating pivot shaft 73 rotates, for example, clockwise, and the dog 81 moves toward one of the proximity switches 8.
3, the reciprocating rotation 73 reverses and rotates counterclockwise, and the dog 81 rotates in the same direction until it is detected by the other proximity switch 83. When the dog 81 is detected by the other proximity switch 83, the reciprocating pivot shaft 73 begins to pivot clockwise. In this way, the cooperative action of the dog 81 and the proximity switch 83 causes the reciprocating pivot shaft 73 to perform a reciprocating pivoting motion.

A stroke adjustment device for adjusting the stroke amount of the reciprocating table 37 is provided inside the reciprocating swivel table 35, and an adjustment operation section of the stroke adjusting device is provided below the reciprocating table 35. That is, within the reciprocating pivot shaft 73, bearings 87A, 8
A rotatable hollow rotating shaft 89 is supported via 7B. A nut 91 is attached to the lower part of the rear part of the hollow rotating shaft 89 in FIG. 3 via a retainer that supports the bearing 87B.
1 is screwed together and tightened, the hollow rotating shaft 89 is fixed.

A mounting plate 93 having a square cross section is attached to the upper part of the hollow rotating shaft 89 with bolts 95. A pulley 97 is fitted into the lower part of the hollow rotating shaft 89 and fixed with a key. A plurality of V grooves are formed on the circumference of the pulley 97, and a belt (not shown) is wound around the V grooves. By rotating the pulley 97 via a belt with a drive motor (not shown), the hollow rotating shaft 89 is rotated at a predetermined number of rotations.

A shaft 101 extending vertically in FIG. 3 is fitted into the through hole 99 of the hollow rotating shaft 89. A disc-shaped upper cam 103 eccentric to the axis of the shaft 101 is fitted into the upper part of the shaft 101. Further, a pinion 105 is attached to the shaft 101 via an upper cam 103. pinion 10
A rack 107 meshing with the upper cam 103 is fixed to the lower part of the upper cam 103 with a bolt 109 in FIG.

A cam groove 11 is formed on a part of the circumference of the upper cam 103.
1 is bored, and a cam follower 113 is fitted into the cam groove 111.

Further, the upper flange 73 of the reciprocating pivot shaft 73
An angular positioning base 115 is fixed inside F with a plurality of bolts 117. Angle positioning base 1
A carriage 37 is mounted on the carriage 15 via a carriage mounting base 119.

The upper surface of the reciprocating mounting base 119 has a long hole 1.
21 are bored in the left and right direction as shown in FIGS. 3 and 4. A pin 123 screwed onto the cam follower 113 fitted into the upper cam 103 is attached to a part of the carriage 37 in the elongated hole 121 so as to be movable in the left-right direction in FIG.

On the other hand, a scale ring 125 is attached to the lower part of the rear part of the shaft 101 in FIG. 3, and is tightened with a nut 127.

With the above configuration, when the drive motor (not shown) is driven, the shaft 1
01 is rotated. When the shaft 101 is rotated, the upper cam 103 is rotated. When the upper cam 103 is rotated, the cam follower 113 performs a stroke movement along a cam groove 111 formed in the upper cam 103. Cam follower 113 is pin 123
Since the upper cam 103 is integrated into the reciprocating table 37 via the cam, the stroke amount is determined by the eccentricity of the upper cam 103, and the reciprocating table 37 is reciprocated in a direction perpendicular to the machining reference center line CL. Become.

The stroke amount is adjusted as follows. That is, in FIG. 3, the nut 127 tightened at the bottom of the shaft 101 is loosened, and the shaft 101 is
When a jig is attached to the lower part of the shaft 101 and the shaft 101 is rotated clockwise when viewed from below in FIG. 3, the pinion 105 provided at the upper part of the shaft 101 rotates in the same direction.
When the pinion 105 rotates, the rack 107 meshed with the pinion 105 moves to the right in FIG. Further, when the shaft 101 is turned counterclockwise, the rack 107 moves to the left in FIG. 3.

The rack 107 is fixed to the upper cam 103, and as the rack 107 moves, the cam follower 1
The stroke amount, which is the eccentricity amount of No. 13, is determined.
Since the cam follower 113 is integrated with the carriage 37 via the pin 123, the stroke amount of the carriage 37 can be adjusted.

The stroke amount is determined by reading the scale using a scale ring 125 provided at the bottom of the shaft 101.
Stroke adjustment is simple and easy.

Therefore, the grinding fluid,
Since foreign substances such as abrasive grains are not mixed in, there is no adverse effect on machine accuracy, lifespan, etc.

Further, when the reciprocating swivel table 35 is used while being fixed at a fixed angle, the angular positioning base 115 is loosened from the upper flange 73F of the reciprocating swivel shaft 73 with a bolt 117. Moreover, the upper flange 73F
The T-shaped pin 129 is attached to the T-shaped circumferential groove 73G on the circumference of the T-shaped pin 12.
Since 9 is attached to the clamp lever 131,
Turn the clamp lever 131 to position it at a predetermined angle. After that, the bolt 117 is tightened and fixed. Furthermore, the upper flange 7 of the reciprocating pivot shaft 73
A part of the outer periphery of 3F is clamped by, for example, a turning clamp device 133 provided on the left side of FIG. 3.

Note that the present invention is not limited to the embodiments described above, but can be implemented in other forms by making appropriate changes.

(Effects of the invention) As understood from the description of the embodiments above, according to the present invention, a stroke adjustment device for adjusting the stroke amount of the reciprocating table is provided inside the reciprocating swivel table, and the stroke amount described above is adjusted. An adjustment operation section of the adjustment device is provided below the reciprocating swivel table, and the stroke amount of the reciprocating table can be easily and easily adjusted by an operator operating the adjustment operation section.

Since the stroke of the reciprocating table is adjusted from the bottom of the reciprocating swivel table, foreign matter such as grinding fluid and abrasive grains is hardly mixed in, so there is no negative effect on machine accuracy and life.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a grinding wheel forming machine according to an embodiment of the present invention, and FIG. 2 is a view taken along the - line in FIG. 1. FIG. 3 is an enlarged cross-sectional view of a portion taken in the direction of arrows in FIG. 1. FIG. 4 is a view taken along the - line in FIG. 3. Explanation of the symbols representing the main parts of the drawing, 1...
Diamond wheel forming machine, 3...Bed, 3
3...Processing equipment, 35...Reciprocating swivel table, 37...
Reciprocating table, 39... Cutting table, 65... Drive body, 73... Reciprocating rotating shaft, 89... Hollow rotating shaft,
101...shaft, 103...upper cam, 113...
Cam follower, 121...long hole, 123...pin, 125...scale ring, CL...machining reference center line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A workpiece moving table is provided that rotatably holds a wheel for forming on a bed, and the position of the workpiece moving table is adjusted in the direction toward and away from the processing reference center line. A reciprocating swivel table is provided, which is freely provided and can swing back and forth about the processing reference center line, and a reciprocating table inserted on the reciprocating swivel table is provided so as to be able to reciprocate in a direction perpendicular to the processing reference line. , the reciprocating table is rotatably equipped with a grinding wheel for forming the wheel to be formed, and a stroke adjusting device for adjusting the stroke amount of the reciprocating table is provided inside the reciprocating rotary table. . A grinding wheel forming machine, characterized in that an adjustment operation section of the stroke adjustment device is provided below the reciprocating swivel table. (2) The stroke adjustment device comprises a disc-shaped cam whose eccentricity can be freely adjusted with respect to the processing reference position, and an adjustment device which adjusts the amount of this cam, Claim 1 of the Utility Model Registration Claim Grinding wheel forming machine described in .