JPS5837527Y2 - Semi-automatic drilling device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drilling device such as a small drilling machine, and in particular, the drilling device is capable of automatically performing drilling.

In conventional small drilling machines, the operating lever is returned by the force of a spring after drilling is completed, but during drilling, the operator must continue to push the operating lever downward to apply a thrust load to the drill. I had to put it on.

For this reason, it was not possible for one worker to use multiple drilling machines to perform processing at the same time, which required a large amount of labor costs.

This invention applies a thrust load for drilling holes.
This can be done automatically by the biasing force of a spring without manual intervention, and an embodiment thereof will be described with reference to the drawings.

1 and 2 show an embodiment of the present invention.

First, in Figures 1 and 2, 1 is a bed, 2 is a
is a standing pillar fixed to this bed 1.

Reference numeral 3 denotes a drive source fixing bracket, on which an electric drill consisting of a motor 4 and a drill 5 is mounted, and is provided so as to be movable up and down along the vertical column 2.

Reference numeral 6 denotes a compression spring that urges the bracket 3 downward, and is wound around the pillar 2, and its lower end is fixed to the lower dust 7, the upper end is fixed to the upper dust 8, and the lower end is fixed to the lower dust 7. 7 is fixed to the bracket 3, and is loosely inserted through the upright column 2 so as to be movable up and down along the column 2.

The upper dust 8 is fixed to the pillar 2. Reference numeral 9 denotes an operating lever, which is pivotally connected to the upper part 8 with a pin 12.

The lever 9 has a movable guide roller 27, and the bracket 3 is provided with a horizontal guide groove 28, and the roller 27 is loosely fitted into the guide groove 28 so as to be able to roll.

Therefore, when the operating lever 9 is pushed up as shown by the arrow 26, the drive source fixing bracket 3 is pushed up via the guide roller 27 and the horizontal guide groove 28, and the bracket 3 is pushed up via the guide roller 27 and horizontal guide groove 28.
Since the dust rises along the pillar 2, the lower dust 7 also rises at the same time, and the upper dust 8 remains stationary, so the compression spring 6 is compressed.

Then, the guide roller 27 moves to the left along the horizontal guide groove 28.

Reference numeral 15 denotes a speed adjusting device consisting of an oil damper, which is provided between the bracket 3 and the bed 1, and is adapted to restrict rapid downward movement of the bracket 3.

Reference numeral 16 denotes a locking lever of the locking device, which is pivotally connected to the bed via a pin 17, and is constantly pressed by a compression sprocket 19 in the direction in which the claw portion 18 at the tip comes into contact with the bracket 3, and when the bracket 3 is raised. When the lower end 20 of the bracket 3 passes the claw portion 18, the lever 16 is rotated by the pressing force of the spring 19 to lock the lower end 20 of the bracket 3 with the claw portion 18, preventing the bracket 3 from falling. It is designed to prevent

21 is a workpiece, 22 is a workpiece fixing attachment provided on the bed 1, 23 is a limit switch for starting a drill,
24 is a limit switch for stopping the drill, and 25 is an attachment provided on the bracket 3.

The drive source fixing bracket 3 shown by the solid line in FIG.
' indicates the rising end of the bracket 3, that is, the upper limit.

In the drilling device configured in this way, the drive source fixing bracket 3 is always trying to go down due to the compression spring 6, but when the operating lever 9 is in the normal position shown by the solid line, that is, at the lowering end, By lifting the bracket 3 as shown at 26, the bracket 3 rises together with the upper part 7 along the vertical column 2, and eventually reaches the rising end shown by the two-dot chain line.

At this time, the claw portion 18 of the locking lever 16 automatically enters the lower end 20 of the bracket 3 by the locking spring 19, thereby inhibiting the downward movement of the bracket.

Therefore, the workpiece 21 is now set in the workpiece fixing attachment 22.

Next, by pushing the locking lever 16, the claw portion 1
8 comes off from the lower end 20 of the bracket 3, thus releasing the lock.

The operations up to this point are performed by the worker, and the subsequent operations are performed automatically.

That is, by releasing the above-mentioned lock, the bracket 3 is lowered by the force of the compression spring and its own weight, and when lowered to a certain position, the limit switch 23 is struck by the attachment 25 attached to the bracket 3, and the motor 4 is turned off. operates and the drill 5 starts.

When the workpiece 21 is later lowered to a certain position, the attach 25 causes the limit switch 24 to be activated and the drill 5 to stop.

The downward movement of the bracket 3 also stops.

In this way, Kongming's work is automatically completed.

As mentioned above, the semi-automatic drilling device of the present invention includes a drive source fixing bracket that mounts an electric drill and is movable up and down along the vertical column of the base, and a spring that biases this bracket downward. , is provided with an operation lever for lifting the bracket to the upper limit, so that after the bracket is raised to the upper limit by the lever, the bracket is automatically lowered by the spring and the hole can be drilled on the workpiece. Unlike the conventional method, the operator does not have to continuously apply a downward thrust load to the drill during machining.

Therefore, the operator only needs to push up the operating lever to reset the workpiece that has been machined and set the workpiece to be machined. Since work such as setting workpieces in the device can be performed, labor costs are significantly reduced and productivity is also improved.

Furthermore, since the upper limit of the bracket is equipped with a locking device that inhibits the downward movement of the bracket, the bracket is locked during workpiece setting and resetting work, making the work not only easier but also safer. In addition, since one drilling device can be left as it is and other drilling devices can be worked with peace of mind, and a speed adjustment device is provided between the bracket and the base to adjust the descending speed of the bracket, the bracket The advantages of the present invention include that the bracket does not fall suddenly when the lock is released at the upper limit of is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a partially cutaway front view of FIG. 1. 1...Bed, 2...Standing pillar, 3...
... Drive source fixing bracket, 4 ... Motor, 5 ... Drill, 6 ... Spring,
9...Operation lever, 15...Speed adjustment device, 16...Lock lever

Claims (1)

[Scope of utility model registration request] A drive source fixing bracket on which an electric drill is mounted is provided so as to be movable up and down along a vertical pillar installed on the bed, a spring that biases the bracket downward is wound around the vertical pillar, and the bracket is fixed to the upper limit position. A locking device is provided on the bed to inhibit the downward movement of the bracket at the upper limit position of the bracket, and a speed adjustment device is interposed between the bracket and the bed to adjust the downward speed of the bracket. A semi-automatic orifice device that is characterized by: