JPS6042011Y2 - tool guide device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a guide device for a tool for drilling holes.

Generally, when drilling a hole with a tool provided at the tip of a spindle, a guide plate is provided for the tool in order to reduce runout of the tool and machine the hole with high precision.

It is desirable for this guide plate to guide and hold the tool as close to the workpiece as possible, and it also needs to be moved rearward so as not to get in the way when carrying in and out of the workpiece.

For this reason, a guide plate is movably guided and held on the front surface of a conventional processing head, and is moved back and forth together with the processing head.

In this case, it can only be applied to devices with a large processing head equipped with a feed unit to hold the guide plate on the processing head, and can only be applied to devices with small processing heads such as tile unit types that move the tiles themselves forward and backward. It could not be used.

The present invention provides a tool guide device that solves the above-mentioned problems.The feature is that the guide plate is held in the jig body, and its forward and backward movement utilizes the forward and backward movement of the machining head. In addition to ensuring reliable operation using a simple linkage mechanism, the amount of compression of the springs that make up the linkage mechanism is reduced, and the deformation of the guide plate due to the repulsive force of the springs is prevented, as well as the collapse of the jig body, resulting in high precision. This makes it possible to perform various types of processing.

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

FIG. 1 shows the original state, and FIG. 2 shows the processed state.

Reference numeral 1 denotes a processing head, which is of a tile unit type in which the tiles themselves move forward and backward on the base B.

Reference numeral 2 indicates a tool spindle which is rotatably supported by the processing head 1 and has a tool T detachably attached to its tip, and 3 indicates a jig body fixed to the base B.

A pair of left and right guide cylinders 4 are fixed to the jig main body 3 with axes parallel to the forward and backward axis of the processing head 1, and a sleeve 5 is slidably held within the guide cylinders 4.

A guide plate 6 is fixed to the front end of the sleeve 5.

Therefore, the guide plate 6 is located on the front side of the jig main body 3 and faces the workpiece W to be carried into the position.

A guide bushing 7 for guiding the tool T along the same axis as the tool T is attached to the guide plate 6.

A spring 12 is installed inside the sleeve 5, and the rear end of the sleeve 5 has a stop flange 8 that abuts the rear end surface of the guide tube 4, and a front end of a response member 10, which is fixed to the stop flange 8 and will be described later. An engaging member 9 is provided that slidably holds the member 10 and engages when the responsive member 10 moves in the backward direction.

The responsive member 10 is a shaft-like member that is long in the direction of forward and backward movement of the processing head 1, and its front end is inserted into the sleeve 5 and abuts against the rear end of the spring 12.

Further, a screw 14 is formed at the rear end of the responsive member 10, and a locking member 15 is screwed onto the screw 14 so as to be able to adjust its position.

On the other hand, a contact flange 13 is formed on the processing head 1, and a shaft hole 16 through which the responsive member 10 is loosely fitted is opened in the contact flange 13.

Therefore, the locking member 15 is located on the rear surface of the abutment flange 13.

Furthermore, the responsive member 10 has a stepped portion 11 against which the abutment flange 13 of the processing head 1 abuts.

This stepped portion 11 is formed at a position where the processing head 1 is located at the retreating end.
This is a point that has moved 1□ from the position.

Further, the distance 1□ between the rear end surface of the guide tube 4 and the stop flange 8 formed on the sleeve 5 corresponds to the movable stroke of the guide plate 6, and thereby the guide plate 6 is moved to the second position.
As shown in the figure, there is a slight gap [3], and the stroke is regulated at the forward end that is close to the workpiece W.

Next, the operation of the present invention having the above configuration will be explained.

As mentioned above, FIG. 1 shows the original position.

While the processing head 1 moves a distance 11 from this state,
The shaft hole 16 freely moves on the responsive member 10.

When the abutment flange 13 abuts against the stepped portion 11, the tool T is inserted into the guide bush 7 of the guide plate 6 located at the rearward end.

The processing head 1 moves further forward, moves the responsive member 10 axially in the same direction via the step portion 11 that the abutment flange 13 abuts, and slides the sleeve 5 in the forward direction via the spring 12 to move the guide plate 6 approach the workpiece W.

When the stop flange 8 of the sleeve 5 moves forward by a distance of 1°, it comes into contact with the rear end surface of the guide tube 4.The forward movement of the waist sleeve 5 means that the guide plate 6 has a gap of 1° with respect to the workpiece W.
3 and stop.

However, since the machining head 1 continues to move forward, the tool T moves relatively within the guide bush 7 and operates until the forward end where drilling of the workpiece W is completed, even after the guide plate 6 stops at the forward end. The responsive member 10 continues to move forward together with the processing head 1 and moves relative to the waist sleeve 5 to compress the spring 12.

Next, when the machining head 1 moves backward upon completion of machining,
First, only the response member 10 moves backward together with the processing head 1 by the amount of relative movement forward movement of the response member 10 that has moved relative to the sleeve 5, leaving the guide plate 6 at the forward end position.

When the responsive member 10 has retreated by the relative forward movement amount, it engages with the engagement member 9, and the backward movement of the responsive member 10 is temporarily stopped.

As a result, the abutment flange 13 of the processing head 1
It moves farther away and eventually comes into contact with the locking member 15 at the rear end of the response member 10, causing the response member 10 to move backward again.

In this second backward movement, the stop flange 10 of the response member 10
Since a is integrated with the sleeve 5 via the engagement member 9, the guide plate 6 that was left behind can be moved to the jig main body 3.
When the processing head 1 is stopped at its original position, the guide plate 6 is also returned to its original position as shown in FIG.

As detailed above, the present invention has a structure in which a sleeve is slidably guided and held in the jig body in a direction parallel to the moving direction of the processing head, and a guide plate is attached to the front end of the sleeve to guide and hold the tool. Therefore, it can be applied to small and inexpensive processing equipment of tile unit type.
Furthermore, the amount of overhang of the guide plate relative to the jig body is small, and the supporting rigidity of the guide plate can be increased.

Further, in the present invention, a responsive member is fitted into the sleeve so as to be slidable in a direction parallel to the moving direction of the processing head and is applied with a repulsive force in the backward direction by a spring, and the front end of the responsive member is fitted into the sleeve in a direction parallel to the moving direction of the processing head. Since the configuration includes a locking flange that comes into contact with the sleeve and restricts backward movement, the movement of the processing head is transmitted to the guide plate via this response member, thereby utilizing the movement of the processing head. The guide plate can be moved forward and backward between the forward position where it guides the tool and the retracted position where it does not get in the way of the loading position of the workpiece.In the forward position, it guides the tool reliably, and in the retracted position, the guide plate It has the advantage that workpieces can be carried in and out smoothly without interference.

Furthermore, in the present invention, the rearwardly extending portion of the responsive member is provided with a step portion and a locking member that come into contact with the contact flange of the processing head before the processing head moves to the forward end and the backward end. , the spring is not compressed when the machining head starts moving forward, and then the tool is guided by the guide plate, and the spring starts to be compressed only after the abutment flange comes into contact with the step, so the amount of compression of the spring is reduced accordingly. This has the advantage of being able to be made smaller, thereby preventing deformation of the jig main body due to the repulsive force of the spring, and furthermore, preventing deterioration in machining accuracy caused by this.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the device of the present invention with its main parts cut away, showing the device in its original position. FIG. 2 is a plan view of the same processing state. 1... Processing head, 2... Tool spindle, 3... Jig body, 4... Guide tube, 5... Sleeve, 6... Guide plate, tail... Flange, 9... Engaging member,
10...Response member, 11...Step part, 1
2... Spring, 13... Flange, 15... Locking member, 16... Shaft hole.

Claims (1)

[Scope of utility model registration request] A jig body is installed between a workpiece and a machining head that moves forward and backward toward the workpiece, and a sleeve is slidably guided in the jig body in a direction parallel to the moving direction of the machining head. A guide plate for guiding and holding the tool is attached to the front end of the sleeve, and a guide plate that comes into contact with the jig body or a member integral therewith before the guide member comes into contact with the workpiece is attached to the rear end of the sleeve. A stop flange is formed to regulate the forward end position of the processing head, and a responsive member is provided within the sleeve so as to be slidable in a direction parallel to the moving direction of the processing head, and a spring applies a repulsive force in the backward direction. The front end of this responsive member has a locking flange that abuts against the sleeve and restricts its rearward movement, and the rearwardly extending portion of this responsive member has a locking flange that prevents the processing head from moving forward. A tool guide device characterized in that a step portion and a locking member are provided which abut the abutting flange of the processing head before moving to the end and the retreating end.