JPH0627286Y2 - Revolution radius adjusting device for revolution tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for adjusting the revolution radius of a revolving tool.

(Prior art) The tool is rotated along the inner surface of the hole with a constant radius in order to cut the inner surface of the hole formed in the workpiece and remove burrs generated on the inner surface of the hole. There is a device to (revolve).

For example, in the "Eccentric quill cutting unit drive mechanism" of Japanese Utility Model Publication No. 57-91510, a main shaft and an eccentric quill rotatably supported at an eccentric position in the main shaft are provided, and the main shaft is rotated by a drive device. There is disclosed a device in which a tool attached to the tip of the eccentric quill revolves to cut the inner peripheral surface of the hole.

However, in this device, the position of the eccentric quill with respect to the spindle is fixed and the revolution radius of the tool is constant, so it is a dedicated device according to the inner diameter of the hole of the work, or when the tool wears There is a problem in that the tool must be replaced anew because it is impossible to move the tool in the direction of the revolution radius for correction.

Therefore, it has been proposed that one device can accommodate holes having different inner diameters and that the revolution radius of the tool can be changed so that the wear of the tool can be corrected.

This uses a machine tool that has a biaxial slide mechanism for front, rear, left and right, combines a numerical control device that controls the biaxial slide mechanism at the same time, and uses the coordinate conversion mechanism of the numerical control device to determine the revolution radius of the tool. It can be set freely.

(Problems to be solved by the invention) However, the following problems have been encountered in the tool in which the revolution radius of the tool can be freely set.

First, since the machine tool and the numerical control device having the biaxial slide mechanism are expensive, the cost of the entire device is high.

Further, since the revolution movement of the tool is controlled by numerical control, the control is complicated, and when changing the revolution radius, special skills such as program creation and program change are required. There was a problem that it took a long time to change.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a device having a simple structure and capable of easily adjusting the revolution radius of a tool.

(Means for Solving the Problem) The revolution radius adjusting device for a revolution tool of the present invention comprises a spindle to which a revolution drive means for revolving the tool is connected, and a rotation drive means for rotating the tool. A tool holding part, a slide mechanism interposed between the main shaft and the tool holding part, which supports the tool holding part on the main shaft so as to be movable in the revolution radius direction of the tool, and operates independently of the main shaft. And an adjusting mechanism provided with a converting section for converting the rotation of the adjusting shaft into the sliding motion of the sliding mechanism.

(Operation) According to the above configuration, when the adjusting shaft of the adjusting mechanism is rotated, the tool holding portion moves in the radial direction of the tool to decenter the tool from the spindle, and in that state, the orbital drive means is operated to operate the spindle. Is rotated and, at the same time, the rotation driving means is operated to rotate the tool, so that the tool revolves around a fixed radius while rotating.

Moreover, the structure is remarkably simplified by adopting the uniaxial slide mechanism.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
In this embodiment, the revolving radius adjusting device of the present invention is applied to the deburring device. FIG. 1 is a vertical sectional view of the deburring device provided with the revolving radius adjusting device, and FIGS. It is a figure which shows the revolution state of the tool in the deburring device shown in FIG.

The orbital radius adjusting device 1 of this embodiment is provided with a deburring tool 2
A spindle 4 to which a revolution drive means 3 which is a revolution drive motor for revolving the tool is connected, a tool holding portion 6 which is provided with a revolution drive means 5 which is a rotation drive motor for rotating the tool 2, and a spindle. 4 and a tool holding part 6, and a slide mechanism 7 for supporting the tool holding part 6 on the spindle 4 so as to be movable in the revolution radius direction of the tool 2, and connected to the slide mechanism 7, and inserted into the spindle 4. The adjusting mechanism 9 moves the tool holding part 6 by the rotation of the adjusted adjusting shaft 8.

The main shaft 4 is rotatably supported by a bearing 10 (the lower bearing in the drawing is not shown), and is rotated by the operation of the revolution drive means 3 connected via gears 11 and 12.

In the tool holding portion 6, a clamp member 13 for holding the deburring tool 2 is rotatably supported by a bearing 14, and the clamp member 13 is connected to a rotation driving means 5 and is operated by the rotation driving means 5. The tool 2 held by the clamp member 13 rotates (rotates).

A slide mechanism 7 is provided between the main spindle 4 and the tool holding portion 6, and the slide mechanism 7 is formed on a bracket 15 fixed to the end of the main spindle 4 (not shown).
And the dovetail groove (not shown) formed in the slide 16 fixed to the tool holding portion 6 are engaged with each other to move the slide 16 in a direction perpendicular to the axis of the main shaft 4 (left-right direction in FIG. 1). ) Is movably supported.

Next, the adjusting mechanism 9 that moves the tool holding portion 6 to adjust the revolution radius of the tool 2 will be described.

The adjusting mechanism 9 is inserted into the main shaft 4 and is mounted on the main shaft 4 by the bearing 17.
An adjusting shaft 8 rotatably supported therein, a converting portion 18 provided at one end of the adjusting shaft 8 for converting rotation of the adjusting shaft 8 into movement of a slide 16 of the slide mechanism 7, The adjusting shaft driving means 19 is connected to the other end of the shaft 8.

The conversion unit 18 has a bevel gear 20 provided at one end of the adjusting shaft 8 and a bracket 15 provided at one end of the main shaft 4 in a direction perpendicular to the axial direction of the main shaft 4 (the same direction as the moving direction of the slide 16). ) Is provided with a bevel gear 22 that meshes with the bevel gear 20 of the adjusting shaft 8 and a screw portion 23, and the screw portion 23 is used for sliding the slide 16 of the slide mechanism 7. It is screwed into the screw hole 24 formed in the. According to this configuration, when the adjusting shaft 8 is rotated, the bevel gear 2
The conversion shaft 21 rotates through 0, 22, and the threaded portion 23 of the conversion shaft 21
The tool holding portion 6 is moved by the movement of the slide 16 in which the tool is screwed, and the revolution radius of the tool 2 can be changed.

The adjustment shaft drive means 19 includes an adjustment motor 25 for rotating the adjustment shaft 8, a coupling 26 interposed between the adjustment motor 25 and the adjustment shaft 8, and an adjustment motor 25. It is composed of a cylinder 27 for connecting and disconnecting the coupling 26 by approaching and separating from the adjusting shaft 8.

Then, by rotating the adjustment shaft 8 by the adjustment shaft drive means 19, the slide 16 of the slide mechanism 7 is moved via the conversion unit 18, and the amount of movement of this slide 16 depends on the rotation angle of the adjustment shaft 8. It can be set and is performed by appropriately controlling the adjusting motor 25.

The operation of the deburring device having the revolution radius adjusting device 1 having the above configuration will be described.

As shown in FIG. 2, when removing burrs formed on the inner peripheral surface of the hole W1 formed in the work W, first, the center line O of the hole W1 is removed.
After arranging the deburring device with the shaft center of the main shaft 4 aligned with each other, the cylinder 27 of the adjusting shaft driving means 19 is operated to move the adjusting motor 25 to connect the coupling 26.

Then, by rotating the adjusting motor 25, the slide 16 of the slide mechanism 7 is moved in the direction of the revolution radius of the tool 2 via the conversion portion 18, and the tool 2 attached to the tool holding portion 6 is opened in the hole W1. It is moved to a position (revolution radius A) along the inner peripheral surface of.

Then, after the adjustment motor 25 is moved by the cylinder 27 of the adjustment shaft drive means 19 to disconnect the coupling 26, the tool 2 is rotated by the rotation drive means 5, and at the same time,
By rotating the spindle 4 by the revolution drive means 3,
While the tool 2 rotates, it revolves along the inner peripheral surface of the hole W1 and scrapes off burrs.

When the tool 2 is worn, the cylinder 27 of the adjusting shaft driving means 19 connects the coupling 26 again and the adjusting motor 25 rotates the adjusting shaft 8 to move the slide 16 via the converting portion 18. Then, the tool holding part 6 is moved by the amount of wear of the tool 2 to adjust the revolution radius of the tool 2.

Further, when the burrs produced on the inner peripheral surfaces of the holes having different inner diameters are removed by using the deburring apparatus of the present embodiment, as shown in FIG. The rotation of the adjusting motor 25 is controlled so that
When the hole W2 has a small diameter, the rotation of the adjusting motor 25 is controlled so that the revolution radius of the tool 2 becomes B, and the tool holding portion 6 is moved.

As described above, the burr generated on the inner peripheral surface of the hole W1 can be scraped off, and even when the tool 2 is worn, the tool 2 can be moved by the correction by moving the tool 2 by the worn amount. There is no need to replace it with a new one. Further, even if the inner diameter of the hole W1 for removing the burrs is different, it is possible to cope with it by adjusting the revolution radius of the tool 2 with one device.

In this embodiment, the example in which the revolution radius adjusting device is applied to the deburring device has been shown, but the present invention is not limited to this, and a device for machining a work by utilizing the revolution of the tool, for example, It can also be applied to a device for cutting the inner peripheral surface of the hole of the work.

Further, in the present embodiment, the slide mechanism 7 is configured to use the dovetail and the dovetail groove, but the present invention is not limited to this, and the tool holding portion 6 can move smoothly with respect to the spindle 4. Any slide mechanism may be used as long as it is one.

Further, in the present embodiment, the converting portion 18 for converting the rotation of the adjusting shaft 8 into the movement of the slide 16 has a structure using the bevel gears 20 and 22 and the screw portion 23 of the converting shaft 21. May be used to convert the rotation of the adjusting shaft 8 into the movement of the slide 16.

(Effect of the Invention) As described in detail above, according to the present invention, the tool holder can be moved in the radial direction of the tool by the slide mechanism, and the adjustment shaft is rotated by the adjusting mechanism to move the tool holder. Therefore, the revolution radius of the tool can be easily adjusted according to the rotation of the adjustment shaft. Therefore, the tool revolution radius can be changed easily and in a short time when the tool is worn out or when machining is performed with a different revolution radius. Also, since the adjustment shaft can be rotated independently of the main shaft, it is possible not only to adjust the revolution radius while inserting the tool into the workpiece, but also to adjust the revolution radius during machining. It becomes possible, and moreover, it becomes possible to easily deal with automation of adjustment, and its utility value is great.

Then, unlike the conventional device, an inexpensive revolution radius adjusting device can be provided without using an expensive device such as a machine tool having a biaxial slide mechanism or a numerical control device.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a deburring device to which the revolution radius adjusting device of the present invention is applied, and FIGS. 2 and 3 are views showing a revolving state of a tool in the deburring device shown in FIG. Is. 2 ... Tool 3 ... Revolution driving means 4 ... Spindle 5 ... Rotation driving means 6 ... Tool holding part 7 ... Slide mechanism 8 ... Adjustment shaft 9 ... Adjustment mechanism

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A main shaft to which a revolution driving means for revolving a tool is connected, a tool holding portion including a rotation driving means for rotating the tool, and a main shaft and the tool holding portion. A slide mechanism mounted on the main shaft so that the tool holding portion is movable in the revolution radius direction of the tool, an adjusting shaft arranged to operate independently of the main shaft, and rotation of the shaft. An orbital radius adjusting device for an orbital tool, comprising: an adjusting mechanism having a conversion unit for converting the sliding motion of the sliding mechanism.