JPS6218359Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a key processing device, and more particularly to an automatic key processing device comprising a milling rotation drive motor and a reversible motor for horizontal reciprocating drive of a key feeding mechanism. .

(Prior art) In conventional key processing devices, both the milling cutter and the key feed mechanism were driven by the same motor, so it was necessary to use a cam to cause the key feed mechanism to move horizontally back and forth. That's where it was.

(Problem that the invention aims to solve) However, when using a conventional cam, the key feeding mechanism could be moved forward when cutting the key, but it could not be returned to its original position. .

That is, when one key cutting process is completed and the key cutting process is to proceed to the next one, it is necessary to manually remove the empty key holding part from the milling cutter and return it to the original position.

In addition, such conventional equipment has a slow cutting speed,
It lacked precision, or it was impossible to change the direction of movement of the key feeding mechanism or to stop it during operation.

Therefore, in view of the above-mentioned problems, the present invention aims to provide an automatic key processing device that does not require manual movement of the key feeding mechanism and can be stopped at any time during operation.

(Means for solving the problem) Therefore, in the present invention, one or two milling cutters, a fixed stylus installed next to the milling cutter, and a device arranged horizontally reciprocally opposite the milling cutter and the fixed stylus are provided. It consists of a key feeding mechanism, a motor for driving a milling cutter, and a reversible motor that drives the key feeding mechanism in a horizontal reciprocating manner. One end of the rack is equipped with a key holding part mounted opposite the fixed stylus and milling cutter, and the key holding part is a key biased in the rotating direction of the fixed stylus and milling cutter by a torsion spring attached to one end of the guide rod. It has a sample holding part for fixing the sample and a base material holding part for fixing the key base material, and between the reversible motor and the key feeding mechanism, both motors are stopped at one end of the rotating shaft that transmits the rotational power of the reversible motor. A mover that can move reciprocally in conjunction with a rotating shaft is arranged between a pair of microswitches.
In order to achieve the above object, the key feed mechanism is characterized by having a transmission mechanism having a pinion that is easily engaged with the other end, and can be stopped at any time even when the key feeding mechanism is in operation.

(Function) According to the automatic key processing device of the present invention configured as described above, the rotational power of the reversible motor is easily transmitted by the transmission mechanism while being decelerated and converted into reciprocating motion, and is converted into reciprocating motion by the torsion spring. A profiling mechanism is composed of a sample holder and a fixed stylus that reciprocate horizontally in an energized state, and the key base material held by the right base material holder is cut into keys by a milling cutter as the key holder moves horizontally. Cut to the same shape as the sample.

In other words, when the key holder integrated with the rack moves horizontally, it moves along the outer periphery of the key sample pressed against the tip of the fixed stylus, and the key base material held by the base material holder also moves around the key. It moves along the outer periphery of the sample, and is cut into the same shape as the key sample by a milling cutter, resulting in a copy of the same key as the key sample.

When the cutting process is completed, a mover arranged to be able to reciprocate between a pair of microswitches presses the microswitches to stop both motors.

(Example) Next, an example of implementation of the present invention will be described with reference to the drawings.

Reference numeral 1 in the figure shows an automatic key processing device, which includes a shaft body 4 rotatably supported by bearings 3, 3 protruding from a base 2. This shaft body 4 has milling cutters 5a and 5b fixed to both ends, respectively, and is rotatably driven by a motor 6 bolted onto the base 2.

A rotating brush 10 is attached to the tip of the rotating shaft 9 of the motor 6.
A belt gear 11a is attached inside the belt gear 11a, and the rotational power of the motor 6 is transmitted via a gear belt 12 to a belt gear 11b attached to the shaft body 4.

A key feed mechanism 7 is arranged horizontally on the front side of the base 2, facing the milling cutter 5a, and this key feed mechanism 7 is operated horizontally by a reversible motor 8 fixed to the underside of the base 2 with bolts. It is capable of reciprocating movement.

The key feeding mechanism 7 has a hollow worm-shaped rack 15 rotatably mounted on the outer periphery of a cylindrical guide rod 14 whose both ends are fixed to side frames 13, 13 provided at both ends of the front side of the base 2. The key holder 16 is slidably inserted into the rack 15, and a key holder 16 is attached to the left end of the rack 15.

The key holding part 16 is made up of two holding parts arranged in parallel: a sample holding part 16a for fixing and holding the key sample and a base material holding part 16b for fixing and holding the key base material.
A torsion spring 17 attached to the outer periphery of the left end of the guide rod 14 urges the guide rod 14 to turn in the direction of a fixed stylus and milling cutter 5a, which will be described later.

On the base 2 between the guide rod 14 and the reversible motor 8, a rotating shaft 23 rotatably supported by bearings 22, 22 is arranged parallel to the guide rod 14. A belt gear 23a is attached and fixed to the rotating shaft 23 at a portion facing the belt gear 8a fixed to the rotating shaft of the reversible motor 8.
The rotational power of the reversible motor 8 is transmitted to the rotating shaft 23 via the reversible motor 8.

Also, a bevel gear 25 is provided on the left end side of the rotating shaft 23.
a is attached, and a bevel gear 25b is provided which meshes with this to increase the gear ratio, and the other end of the rotating shaft 27 to which the bevel gear 25b is attached extends below the rack 15 and is connected to a pinion 26 that meshes with the rack 15. It's forcing me.

Thus, the rotational power of the reversible motor 8 is transmitted from the rotating shaft 23 to the pinion 26 of the rotating shaft 27 while being decelerated, and when being transmitted from the pinion 26 to the rack 15, the rotational motion of the pinion 26 is caused by the reciprocating motion of the rack 15. As a result, the base material holding portion 16b of the key holding portion 16 is located at a position facing the milling cutter 5a, and reciprocates in the horizontal direction in parallel with the milling cutter 5a.

On the other hand, a threaded portion 28 of a predetermined length is formed at the other end of the rotating shaft 23, and a slider 29 is screwed into this threaded portion 28 so as to be movable as the rotating shaft 23 rotates. Guide rod 14 of mover 29
A groove 29a is formed in the horizontal direction on the side, and the slider 29 is slidably fitted into this groove 29a.
A regulating rail 30 fixed to the frame prevents rotation together with the threaded portion 28 and rotating shaft 23.

Further, on the opposite side of the groove 29a, a pair of micro switches 31a and 31 are arranged facing each other on the base 2.
A protruding portion 29b is formed between the protrusions 29b and a pair of protrusions 29c and 29d formed by screwing small bolts, respectively, on the left and right sides of the protruding portion 29b.

The micro switches 31a and 31b are for stopping the motor 6 and the reversible motor 8. When the rotating shaft 23 is rotated by the reversible motor 8, the moving element 29 is moved by the regulating rail 30 to stop the rotating shaft 23 and the screw portion 28.
The projection 29c moves horizontally along the regulation rail 30, and this movement causes the projection 29c to move horizontally along the regulation rail 30.
Or 29d is the micro switch 31a or 31b
Press to switch between motor 6 and reversible motor 8.
This is to stop the operation of the

Column-shaped support frames 32a and 32b are provided on the bases 2 on both sides of the milling cutters 5a and 5b, inscribed in the rear end portions of the side frames 13 and 13, respectively, and projecting therefrom. Among these, a fixed stylus 33a having a wedge-shaped tip is attached to the upper end of the support frame 32a, facing the sample holding part 16a of the key holding part 16, so that its protrusion length can be adjusted.

The fixed stylus 33a is held at its tip by the sample holder 16a, and a key sample urged by a torsion spring 17 is pressed against it. At this time, the sample holder 16a that reciprocates horizontally while being biased by the torsion spring 17 and the fixed stylus 33a form a parallel mechanism, and the key base material held by the right base material holder 16b is As the key holder 16 moves horizontally, it is cut into the same shape as the key sample by the milling cutter 5a.

That is, as described above, the rotational movement of the reversible motor 8 is caused by the rotating shaft 23, bevel gears 25a, 25b.
and the pinion 26 to the rack 15, resulting in a horizontal reciprocating movement, and when the key holding part 16, which is integrated with the rack 15, moves horizontally, it moves along the outer periphery of the key sample pressed against the tip of the fixed stylus 33a. However, the key base material held by the base material holding part 16b also moves along the outer periphery of the key sample, and is cut into the same shape as the key sample by the milling cutter 5a, resulting in a key having the same shape as the key sample. ) is what is being copied.

Further, the outer periphery of the rack 15 is connected to a through hole 18 penetrating through the peripheral wall and a slot 19 formed elongately in the axial direction of the peripheral wall of the guide rod 14, and is fixed to prevent the rack 15 and the key holding part 16 from turning. A snap lock 20 is provided to do so.

The snap lock 20 is located inside a casing screwed into a screw hole drilled in the peripheral wall of the rack 15, and is biased inward by a spring 20a.
The small diameter tip 21 passes through the large diameter part 20b and connects to the through hole 18 of the rack 15 and the slot 1 of the guide rod 14.
When the keys 9 and 9 are lined up in a straight line, it faces into the slot 19 and fixes the rack 15 and the key holding part 16 so that they do not rotate.

This snap lock 20 is designed to rotate the key holding portion 16 toward you and lock it with the same snap lock 20 when working, such as when making the key holding portion 16 grip a key base material, or when removing a key after processing. belongs to.

Note that the guide rod 14 facing the milling cutter 5b
A spare key holding part 34 is provided on the outer periphery using a cylindrical pipe instead of a rack and is rotatably and slidably mounted separately from the key holding part 16, and can be manually cut with a milling cutter 5b as needed. I am trying to process it. However, it goes without saying that this spare key holder 34 may be driven by the reversible motor 8 similarly to the key holder 16.

FIG. 5 shows the electric circuit of the automatic key processing device 1, and the functions of the device 1 will be further explained with reference to this figure.

In the figure, L indicates a toggle switch, which starts the motor 6 and the reversible motor 8. When this toggle switch L is in the lower ON position,
A circuit including both a motor 6 circuit whose movable plate contacts contacts B and D to drive the milling cutters 5a and 5b, and a reversible motor 8 circuit which horizontally moves the key holder 16 and slider 29 to the left. form.

The protrusion 29d of the mover 29 is the micro switch 3
When 1b is pressed, the circuit is cut off, and both the motor 6 and the reversible motor 8 are stopped. Conversely, when toggle switch L is in the upper ON position,
The movable plate contacts contacts A and C and the motor 6
and a circuit that rotates the reversible motor 8 so as to move the key holder 16 and the mover 29 to the right. At this time, the protrusion 29c of the mover 29 is connected to the micro switch 31a.
When pressed, the circuit is cut off, and both the motor 6 and the reversible motor 8 stop.

According to the automatic key processing device 1, as described above,
After one key cutting process, the next key cutting process can be performed without manually returning the key holder 16 to its original position, and it is sufficient to simply change the switch.

Furthermore, the above-mentioned circuit may be configured such that a two-pole single-throw switch P is used so that when the switch P is open, the motor 6 can be operated while the reversible motor 8 is stopped. .

(Effects of the invention) The present invention is constructed and functions as described above, and includes a reversible motor and a key feeding mechanism that reciprocates by the reversible motor, and also includes a reversible motor that transmits information to the key feeding mechanism. Since the process is equipped with a mover that reciprocates between a pair of microswitches, there is no need to manually move the key feeding mechanism, which has advantages such as high work efficiency, safety and the ability to stop at any time.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted perspective view showing an embodiment of the automatic key processing device according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, and Fig. 4 is a longitudinal cross-section of the same. FIG. 5 is an electrical circuit diagram of the same as above. 1... Automatic key processing device, 5a... Milling cutter, 6
... Motor, 7 ... Key feeding mechanism, 8 ... Reversible motor, 14 ... Guide rod, 15 ... Rack,
16... Key holding part, 16a... Sample holding part, 16b... Base material holding part, 17... Torsion spring, 20... Snap lock, 26... Pinion, 28... Threaded part, 29... Mover, 29c,
29d...Protrusion, 30...Regulation rail, 31a,
31b...Micro switch, 33a...Fixed stylus.

Claims (1)

[Claims for Utility Model Registration] (1) One or two milling cutters, a fixed stylus installed next to the milling cutters, and a key feeding mechanism arranged horizontally reciprocally opposite the milling cutters and the fixed stylus; It consists of a milling motor and a reversible motor that horizontally reciprocates the key feed mechanism. A key holding part is attached opposite to the fixed stylus and the milling cutter, and the key holding part is biased in the rotating direction of the fixed stylus and the milling cutter by a torsion spring attached to one end of the guide rod. It has a holding part and a base material holding part for fixing the key base material, and between the reversible motor and the key feeding mechanism, there is a pair of micro switches that stop both motors at one end of the rotating shaft that transmits the rotational power of the reversible motor. An automatic key processing device characterized by having a transmission mechanism in which a movable element is disposed between the ends thereof and can be reciprocated in conjunction with a rotating shaft, and a pinion that is easily engaged with the other end is disposed. (2) The above-mentioned mover is provided with a pair of protrusions protruding on both the left and right sides, and the protrusions are adapted to press and operate each micro switch. Automatic key processing device. (3) The guide rod mentioned above is cylindrical, and
A utility model according to claim 1, characterized in that a slot extending in the axial direction is bored, and a snap lock that can be inserted and locked into the slot is easily attached to fix the key holding part. Automatic key processing device.