JPH0752006A - Rotary grinding machine - Google Patents

Abstract

PURPOSE:To provide a rotary grinding machine capable of performing both surface grinding and internal grinding. CONSTITUTION:A second grinding whell driving device 23 having a grinding wheel spindle 33 nearly perpendicular to the upper face of a table 8 is provided, as a unit, on a first grinding wheel driving device 10 having a grinding wheel spindle 12 nearly parallel to the upper face of the table 8 so that it can be loaded and unloaded. When surface grinding of a workpiece W is performed, the grinding is performed by the outside peripheral surface of a grinding wheel of the first grinding wheel driving device 10. Further, when internal grinding of a workpiece W is performed, the grinding is performed by the outside peripheral surface of a grinding wheel 35 of the second grinding wheel driving device 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary grinder for grinding a work piece.

[0002]

2. Description of the Related Art Conventionally, there has been a rotary grinder including a grindstone driving device having a grindstone shaft substantially parallel to a rotatable table upper surface. Then, the grindstone wheel and the table of the grindstone driving device are in a rotating state, and the grindstone driving device descends to perform surface grinding of the workpiece.

[0003]

However, in this conventional rotary grinder, the grindstone axis of the grindstone driving device is substantially parallel to the table upper surface, and in order to perform the inner surface grinding, the grindstone driving device has It can not be done only by exchanging the grinding wheel,
It was carried out by an inner surface grinding machine in another place. For this reason, there is a problem that the workpiece must be moved between the rotary grinder and the inner surface grinder, and that each installation space is required and installation cost is high.

The present invention has been made in view of the problems existing in such conventional techniques, and an object thereof is to provide a rotary grinder capable of performing surface grinding and inner surface grinding. is there.

[0005]

In order to achieve the above object, in the invention of a rotary grinder according to claim 1, a first grindstone having a grindstone shaft substantially parallel to a rotatable table upper surface. And a second whetstone driving device connected to the first whetstone driving device and having a whetstone axis substantially vertical to the table upper surface.

Further, in the invention of the rotary grinding machine described in claim 2, the first grindstone drive device and the second grinding wheel drive device according to claim 1 are provided.
The above-mentioned grindstone driving device and the lifting device for moving up and down with respect to the table are independently provided.

Further, in the invention of the rotary grinding machine according to claim 3, in the invention of claim 1 or 2, the second grindstone drive device has a structure which is attachable to and detachable from the first grindstone drive device. Is.

[0008]

In the rotary grinding machine according to the first aspect of the present invention configured as described above, the surface grinding of the workpiece is performed by the grindstone of the first grindstone driving device. Further, the inner surface of the workpiece is ground by the grindstone of the second grindstone driving device. Therefore, it is not necessary to move the workpiece between the rotary grinder and the inner surface grinder, it is not necessary to secure an installation space for each, and the installation cost can be reduced.

Further, in the rotary grinding machine according to a second aspect, the first grindstone drive device and the second wheel drive apparatus according to the first aspect are provided.
Lifting devices for lifting and lowering the table with respect to the whetstone driving device are independently provided. Therefore, when the inner surface is ground by the second grindstone drive device, the grindstone shaft of the second grindstone drive device can be finely adjusted in the vertical direction.

Further, in the rotary grinding machine according to the third aspect, the second grindstone driving device is attachable to and detachable from the first grindstone driving device. Therefore, when performing the surface grinding by the first grindstone driving device, by removing the second grindstone driving device, the second grindstone driving device does not get in the way and the smooth surface grinding work is performed. You can
Further, if a structure for mounting the second grindstone driving device is provided on the existing rotary grinder, the inner surface grinding function is added to the surface grinder by mounting the second grindstone driving device. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the rotary grinding machine of the present invention will be described below with reference to FIGS.

As shown in FIG. 3, a motor 2 is attached to the upper portion of the side surface of the main frame 1, and a rotary shaft 3 of the motor 2 is attached.
Has threads. On the upper surface of the main frame 1,
A rail 5 is attached so as to extend in the same direction as the rotary shaft 3, and a saddle 6 is slidably engaged with the rail 5. A threaded body 7 is attached to a substantially central portion of the lower surface of the saddle 6, and the rotary shaft 3 is threaded through the threaded body 7. With the rotation of the motor 2, the saddle 6 is moved left and right in FIG. A table 8 is supported on the upper surface of the saddle 6, and the table 8 is positively rotated by a motor (not shown).

Next, the first grindstone driving device 10 will be described. A column 9 is fixed to the upper surface of the main frame 1, and a first grindstone driving device 10 is installed on the column 9 so as to be vertically movable. A grindstone shaft 12 is inserted into the arm body 11 a substantially parallel to the upper surface of the table 8 and is supported by a bearing 13. The arm body 11a
A motor 14 is attached to the grinding wheel shaft 12, and the rotation shaft of the motor 14 is attached to the end of the grindstone shaft 12. A grindstone wheel 16 is attached to the grindstone shaft 12 via a press fitting 15, and the grindstone wheel 16 is covered with a cover 17.
The grinding wheel 16 can be positively rotated by the motor 14.

An arm support 11b is attached to a substantially central portion of the arm body 11a, and a vertical upper end of a rotary shaft 18 is attached to a lower portion of the arm support 11b via a bearing 19. A lower end of the rotary shaft 18 is meshed and supported by a guide 20, and a worm gear 36 of a rotary shaft 22 of a motor 21 mounted inside the main frame 1 is meshed with a screw thread of the guide 20. The guide 20 is rotated by the motor 21, and the rotation shaft 18 is moved up and down while being supported by the guide 20, whereby the arm 11 is rotated.
Can move up and down.

Next, the inner surface grinding unit 23 as the second grindstone driving device will be described. As shown in FIGS. 1 and 2, a box 25 is attached to one end of the mounting arm 24, and a through hole 24a is provided at the other end. The through hole 24
The inner surface grinding unit 23 is fixed to the arm 11 by inserting a bolt 26 projecting from the upper part of the arm 11 of the rotary grinding machine into a and tightening it with a nut 37.

A through hole 27 is provided on the upper surface of the box body 25, and a rotary shaft 29 of a motor 28 attached to the upper surface of the box body 25 is inserted into the through hole 27. The rotary shaft 29 is threaded and is supported by a bearing (not shown) provided in the through hole 27. A rail 30 is attached to the left side surface of the box body 25 in the figure, and a frame 31 is vertically movably engaged with the rail 30.

Further, a screwing body 32 is attached to a substantially central portion of the right side surface of the frame 31 in FIG.
The rotary shaft 29 is screwed into the shaft. The rotation shaft 29 is rotated by the action of the motor 28, whereby the frame 31 can move up and down on the rail 30. A spindle 33 as a grindstone shaft perpendicular to the upper surface of the table 8 is rotatably supported on the frame 31, and a rotary shaft of a motor 34 attached to the upper surface of the frame 31 is attached to one end of the spindle 33 and the other end thereof is attached. A grinding wheel 35 is attached to the wheel. Then, the grinding wheel 35 can be positively rotated by the motor 34 via the spindle 33.

Next, the operation of the rotary grinder constructed as described above will be described. First, the surface grinding will be described. When performing surface grinding, the inner surface grinding unit 23 is removed from the arm 11. Now, place the work piece W on the table 8 and fix it, and then adjust the saddle 6,
The workpiece W is positioned with respect to the grinding wheel 16. After the positioning, the table 8 and the grinding wheel 16 are rotated and the motor 21 is driven to lower the arm 11. And
The surface grinding of the workpiece W is performed by bringing the grinding wheel 16 into contact with the workpiece W and sliding the saddle 6.

Next, the inner surface grinding will be described. As shown in FIG. 2, the grinding wheel 16 is removed from the grinding wheel shaft 12, and the inner surface grinding unit 23 is attached to the arm 11. First, for example, the workpiece W having a cylindrical inner circumference is placed and fixed on the table 8, and the saddle 6 is adjusted to position the workpiece W with respect to the grinding wheel 35. After the positioning, the table 8 and the grinding wheel 35 are positively rotated, and in this state, the motor 28 is driven to lower the frame 31 of the inner surface grinding unit 23. The inner surface of the work W is ground by bringing the grinding wheel 35 into contact with the inner circumference of the work W.

As described above, in the rotary grinder of this embodiment, the workpiece W can be surface-ground by the grinding wheel 16 of the first grinding wheel drive device 10, and the second grinding machine is used.
The inner surface of the workpiece W can be ground by the grinding wheel 35 of the inner surface grinding unit 23 as the whetstone driving device. Therefore, there is no need to install a separate inner surface grinding machine for inner surface grinding, the installation space is small, and the installation cost is reduced.

Further, in the rotary grinder of this embodiment, the second grindstone driving device is detachable as the inner surface grinding unit 23. For this reason, the inner surface grinding unit 23 can be attached by providing a bolt on the existing rotary grinding machine, and an inner surface grinding function can be added to the surface grinding machine.

The present invention is not limited to the above embodiments, but may be constructed as follows, for example, within the scope of the invention. (1) A structure in which all the positioning of the grinding wheel and the table of the first and second grinding wheel drive devices is performed manually. (2) The inner surface grinding unit itself is not provided with a vertical mechanism, and the inner surface grinding unit is moved up and down by moving the grindstone shaft of the arm 11 of the rotary grinder up and down.

[0023]

In the rotary grinding machine according to the first aspect of the present invention constructed as described above, the grinding wheel of the first grinding wheel drive device can perform the surface grinding of the workpiece, and the second grinding wheel drive device. The inner surface of the workpiece can be ground with the grinding wheel. Therefore, it is not necessary to move the workpiece between the rotary grinder and the inner surface grinder, it is not necessary to secure an installation space for each, and the installation cost can be reduced.

In the rotary grinding machine according to the second aspect of the present invention, the first grindstone drive device and the second grindstone drive device are independently provided with lifting devices for moving up and down with respect to the table. Therefore, when the inner surface is ground by the second grindstone drive device, the grindstone shaft of the second grindstone drive device can be finely adjusted in the vertical direction.

Further, in the rotary grinding machine according to the third aspect, the second grindstone driving device is attachable to and detachable from the first grindstone driving device. Therefore, when the first grinding wheel drive device is used for surface grinding, by removing the second grinding wheel drive device, the second grinding wheel drive device does not get in the way and the work can be performed smoothly. . Further, if a structure for mounting the second grindstone driving device is provided on the existing rotary grinder, the inner surface grinding function is added to the surface grinder by mounting the second grindstone driving device. be able to.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an inner surface grinding unit portion of an embodiment in which the present invention is embodied in a rotary grinding machine.

FIG. 2 is a partially cutaway side view showing a rotary grinder.

FIG. 3 is a partially cutaway side view showing a state in which an inner surface grinding unit is removed from a rotary grinder.

[Explanation of symbols]

8 ... Table, 10 ... 1st grindstone drive device, 12 ... 1st
Of the grindstone driving device, 14 ... Motor of the first grinding wheel driving device, 16 ... Grinding wheel of the first grinding wheel driving device, 18 ... Rotating shaft of the lifting device,
Reference numeral 0 ... Guide constituting the lifting device, 21 ... Motor constituting the lifting device, 23 ... Inner surface grinding unit as second grinding wheel drive device, 28 ... Motor constituting lifting device, 29 ...
Rotating shafts constituting the elevating device, 30 ... Rails constituting the elevating device, 33 ... Spindles as grindstone shafts constituting the second grindstone drive device, 34 ... Motors constituting the second grindstone drive device, 35 ... Grinding wheel that constitutes the grinding wheel driving device of No. 2

Claims (3)

[Claims] 1. A first grindstone driving device (10) having a grindstone shaft (12) substantially parallel to an upper surface of a rotatable table (8), and being connected to the first grindstone driving device (10). And a second grindstone driving device (23) having a grindstone shaft (33) substantially vertical to the upper surface of the table (8). 2. The first grindstone drive device (10) and the second grindstone drive device (10)
Elevating devices (18, 20, 21) (28, 2) for moving up and down with respect to the table (8) with the grindstone driving device (23)
9. The rotary grinding machine according to claim 1, wherein the rotary grinding machines are provided independently of each other. 3. The rotary grinding machine according to claim 1 or 2, wherein the second grindstone drive device (23) has a structure that is attachable to and detachable from the first grindstone drive device (10). .