JP2564764Y2 - Engraving device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamping device for stamping a workpiece such as a machined gear such as a product number.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional stamping apparatus of this type is mounted on a broaching machine for forming a keyway in a workpiece, and a punch 2 stamped on a gear 1 is provided with a stamping unit main body 3. The stamping holder 4 is integrated with the stamp holder 4 movably up and down, and is constantly urged upward by a push-up spring 5. When the keyway processing is completed, the engraving unit main body 3 moves forward by the unit driver 6 and stops when the punch 2 comes directly above the engraving position of the gear 1. Next, the engraving driving body 7 is actuated, the weight 9 is raised by the weight operating body 8, and when the weight 9 comes off at the rising end, the weight 9 is accelerated and vigorously descends to collide with the engraving holding body 4, Due to this impact, the punch 2 descends and the gear 1 is stamped. When the stamping is completed, the marking unit main body 3 is retracted, the gear 1 is taken out from the jig 10 and the operation is completed (actual opening in the Japanese Utility Model Application No. -11764
Reference).

FIG. 8 shows a conventional air-driven hammer device, in which air is supplied from a pipe 1 to a lock brake 2 to fix a piston 4 at an upper end of a rod 3 at an intermediate position of an air cylinder 5. 3 The weight 6 at the lower end is located at the highest position in the guide pipe 7, and air is supplied from the pipe 8 at the top of the air cylinder 5 and the air cylinder 5
Air is removed from the bottom pipe 9 by suction. Then, when the lock brake 2 is released by removing air, the piston 4,
That is, the weight 6 is rapidly lowered by the pressing force of the upper chamber 5a of the air cylinder 5 and the depressurizing force of the lower chamber 5b to hit the top of the cutter 10, and the cutting edge of the cutter 10 is moved by the impact force to the head of the rivet 11. Is to be cut.
-44785).

[0004]

However, in the conventional example disclosed in Japanese Utility Model Laid-Open Publication No. 64-11764, the punch 2 is constantly pushed up by the push-up spring 5 and is in a non-contact state with the gear 1. When the stamping is performed, the displacement of the stamp or the sharpness of the stamp is varied due to the spring pressure, the stamp wear, or the like, and the change of the stamp 2 following the stamp position of the gear 1 is troublesome. In the conventional example disclosed in Japanese Utility Model Laid-Open Publication No. Sho 63-44785, the impact force to the cutter 10 is given by the pressure of the upper chamber 5a of the air cylinder 5 and the depressurizing force of the lower chamber 5b, and the air device is frequently used. Therefore, there has been a problem that the structure is complicated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and provides an apparatus which simplifies an engraving apparatus and a process. The gist of the present invention is to provide a unit body that can move forward toward a workpiece and a support plate that can move up and down and a weight stopper that can move horizontally above the support plate. A stamping holder having an imprinting punch is fixed on the lower surface of the device, and a guide shaft on which a weight is vertically movably fitted via a spacer coaxially with the imprinting holder is provided on the upper surface thereof. It is on the marking device.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 is a front view of the stamping device according to the present invention, in which a part of the stamping device is cut off, FIG. 2 is a front view of a processing machine equipped with the stamping device, and FIG. 3 shows an operation state of a main part of the stamping device. FIGS. 4 to 6 are perspective views showing the operation steps of the engraving device.

In FIG. 1, reference numeral 1 denotes a machining machine, which is a general-purpose key broaching machine for machining a keyway on a gear 2 which is a workpiece, and the key broaching machine 1 is provided at an upper end of a column 4 standing upright on a base 3. A cylinder 5 is provided, and a broach 7 that moves up and down along a slider 6 is connected to the cylinder 5, and the gear 2 fixed to a jig 8 is processed by the broach 7.

Reference numeral 9 denotes a marking device, which is installed on the left side of the processing machine 1. The unit body 10 is supported by a linear motion guide 11 so as to slide in the horizontal direction. A main cylinder 12 is vertically fixed to 10, a base end of a horizontally disposed support plate 13 is fixed to a rod tip, and the other end faces the gear 2 direction. A disc-shaped stamping holder 14 is fixed to the lower surface of the other end of the support plate 13, and a stamping stamp 15 stamped on the lower surface is provided on a part of the outer periphery of the lower surface of the stamping holder 14.

Reference numeral 16 denotes a disk-shaped spacer fixed to the upper surface of the other end of the support plate 13 coaxially with the marking holder 14.
A cylindrical guide shaft 17 stands upright at the center of the upper surface of the spacer 16, and a ring-shaped weight 18 having a predetermined weight is fitted to the guide shaft 17 so as to be vertically movable. Here, the diameter of the spacer 16 is equal to the guide shaft 17.
Is smaller than the diameter of the weight 18, and the height d of the spacer 16 is set slightly higher than the height of a plate-shaped weight stopper 19 described later.

The weight stopper is provided on the support plate 13.
Is arranged in a horizontal state at an upper position of the cylinder 2, and its base end is fixed to the unit main body 10 in a horizontal state.
0 rod. Also weight stopper 1
As shown in FIG. 3, a through hole 21 is formed in the vicinity of the distal end of the weight stopper 9. The through hole 21 is formed by a stopper 21 a on the distal end edge when the weight stopper 19 is retracted. When the weight stopper 19 moves forward, the weight 18 is formed in such a size that the weight 18 can drop. Here, the distance (height) between the lower surface of the weight stopper 19 and the upper surface of the support plate 13 is set slightly higher than the height d of the spacer 16.

Next, the operation of the above embodiment will be described. At the time of key groove machining by the key broaching machine 1, the unit body 10 is on standby on the left side of the key broaching machine so as not to hinder keyway machining. When the keyway processing is completed and the broach 7 is raised, the unit body 10 is moved to the jig 8.
4 and stops when the marking holder 14 is located immediately above the gear 2 as shown in FIG. 4, and thereafter the marking holder 14 is driven by the main cylinder 12 via the support plate 13. It descends and stops when the lower surface of the marking punch 15 contacts the end surface of the gear 2.

As shown in FIGS. 3 and 5, the weight stopper 19 moves forward by driving the cylinder 20,
When the stopper portion 21a separates from the weight 18, the weight 18 passes through the through hole 21 by its own weight, accelerates, falls vigorously onto the spacer 16, and the lower end of the stamping punch 15 strikes the end face of the gear 2 by the impact. Engrave.

When the above-mentioned embossing is completed, as shown in FIG.
When the support plate 13 is lifted while the weight is placed, and stops when the lower surface of the weight 18 reaches a position slightly higher than the upper surface of the weight stopper 19. Next, after the weight stopper 19 is retracted and the stopper portion 21a is positioned on the lower surface of the weight 18, the unit body 10 returns to the retracted position and
4 and the weight 18 are separated from the gear 2.

[0014]

As described above, the marking device according to the present invention is provided with a support plate movable up and down on a unit body that can move forward toward a workpiece and a weight stopper movable horizontally above the support plate. A stamping holder having a stamping stamp is fixed to the lower surface of the support plate, and a guide shaft having a weight vertically movably fitted thereto via a spacer coaxially with the stamping holder is fixed on the upper surface thereof. Therefore, the stamping force against the stamping punch is a natural drop force of the weight, which simplifies the structure.In addition, the stamping punch is in direct contact with the workpiece at the time of stamping, and the position of the stamping punch and It is possible to prevent imprinting and the like. In addition, since the engraving holder is positioned coaxially with the workpiece, any change in the engraving position of the workpiece can be easily handled simply by moving the engraving punch in the circumferential or radial direction with respect to the engraving holder. There are various effects that can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a stamping device according to the present invention with a part thereof cut away.

FIG. 2 is a front view of a processing machine equipped with the marking device.

FIG. 3 is a perspective view showing an operation state of a main part of the marking device.

FIG. 4 is an explanatory diagram showing a first operation of the marking device.

FIG. 5 is an explanatory diagram showing a second operation of the engraving device.

FIG. 6 is an explanatory view showing a third operation of the engraving device.

FIG. 7 is a perspective view showing a conventional marking device.

FIG. 8 is a longitudinal sectional view of a conventional air-driven hammer device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing machine 2 Workpiece 9 Marking device 10 Unit main body 13 Support plate 14 Marking holder 15 Marking punch 16 Spacer 17 Guide shaft 18 Weight 19 Weight stopper 21 Passage hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A unit body that can move forward toward a workpiece, a support plate that can move up and down, and a weight stopper that can move horizontally above the support plate, are respectively provided, and a stamping punch is provided on the lower surface of the support plate. A stamping device characterized in that the stamping holder is fixed, and a guide shaft on which a weight is vertically movably fitted via a spacer coaxially with the stamping holder upright on an upper surface thereof.