JPH0452078Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention mainly relates to an engraving machine for engraving characters such as initials and dates on the inner peripheral surface of metal rings such as rings.

(Prior Art) Conventionally, in this type of engraving machine, as shown in FIGS. 4 to 6, a copying needle 32 is operated to follow the characters engraved on a model plate 30, and this copying needle 32
An engraving needle 34 is attached to an integral frame 35, which operates in response to the operation of the ring 33 to engrave characters, which are reduced versions of the characters 31 on the model board 30, on the inner peripheral surface of the ring 33. Further, the model plate 30 is formed into a disk shape having a predetermined diameter, and at a predetermined radius position on the outer periphery side, copying characters having a predetermined font size, such as alphabetic cursive uppercase letters and uppercase numbers, are engraved. In addition, on another model board, there are alphabetic cursive lowercase letters and lowercase numbers, alphabetical type uppercase letters and uppercase numbers, or uppercase letters in a type smaller than the alphabetic uppercase letters and numbers of the same size as the uppercase letters. Several types of model boards are prepared with engraved characters, etc., and locking recesses 30a are formed on the outer or inner periphery of the model boards at pitches corresponding to the pitches between the letters for copying. Further, on the upper surface of the base 35 of the engraving machine, a mounting part 36 is provided to rotatably attach the center of the model plate 30 via a stopper.
Spring 37 for one locking recess 30a of 0
A positioning member 38 is provided which is locked by a spring force, and the model plate 30 can be freely rotated only when the positioning member 38 is released from the locking recess 30a.

(Problem to be Solved) However, in the case of an engraving machine equipped with this disc-shaped model plate, the position of the copying character is positioned at a predetermined position centered on the stopper in the relationship between the copying needle and the engraving needle. At the same time, the arrangement of copying letters on the disk is limited, so as mentioned above, for example, four model plates must be prepared, and the stoppers must be removed each time when combining letters. There were problems such as the fact that the model plates had to be replaced and installed, which required a lot of work.

The present invention was made to solve the above-mentioned conventional problems, and allows for efficient engraving work by engraving multiple types of copy characters on a single model board, making it easy to change the position of the characters. The purpose of this invention is to provide a ring engraving machine that can be used to engrave rings.

(Means for solving the problem) In order to solve the above-mentioned technical problem, the present invention has a pendulum attached to the machine base by a support bolt so as to control the engraving operation in the arc direction of the inner peripheral surface of the ring, and a a base moving rod whose upper end is pivotally supported on a support shaft horizontally orthogonal to the pendulum so as to control engraving movement in the width direction of the circumferential surface; a copying needle supported vertically at a lower part of the base moving rod; It consists of an engraving shaft with an engraving needle attached to the upper part of the base moving rod, and the copying needle is operated by imitating the copying letters on the model board placed directly below the copying needle, and the amount of operation of the copying needle is In a ring engraving machine that operates an engraving needle at a constant reduction rate to engrave characters on the inner circumferential surface of a ring, the intersection of the support bolt and the support shaft and the axes of the engraving needle and copying needle are arranged on the same line. , a model plate is formed into a rectangular shape and provided so as to be slidable in the left and right direction in a guide groove provided on the base of the machine base, and the same line is placed on a line separated by a predetermined distance from the front and back edges of the model plate. The ring engraving machine has a structure in which the tip of the copying needle and the center line of the copy characters are aligned when the model plate is inserted into the guide groove with the copy characters arranged at the center.

(Function) A model plate is formed into a rectangular shape having a predetermined width, and fonts and fonts are placed upside down at predetermined intervals along the longitudinal direction of both edges of the model plate along predetermined dimensional positions from the same edge. Combinations of engraved characters can be created on a single model board by engraving groups of letters and numbers with different fonts on the front and back, and selectively inserting them into the guide groove formed on the base of the engraving machine on the front and back, and in the top and bottom directions. be able to.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
has been erected. This machine stand 1 is formed into a substantially box shape with an open surface on its entire surface, and guide plates 3 are attached to both edges of the open section. A slide plate 4 is provided between the guide plates 3 so as to be slidable up and down. A disc-shaped chuck base 5 having a hollow portion 5a in the center is attached to the slide plate 4 so as to be rotatable and positionable. A suitable number (usually three) of chuck pawls 6 are attached to the chuck base 5 so as to be slidable in the radial direction on the chuck base 5, similarly to a commonly known chuck mechanism. That is, three grooves (not shown) are formed in the chuck base 5 at equal angular intervals in the radial direction, and the chuck claws 6 are slidably fitted to each movable plate 6a along the grooves. bolt nut 6
It is attached by c. Moreover, there is a tooth pattern 7 on the outer periphery between the chuck base 5 and the slide plate 4.
An actuating plate 7 having a diameter of 1.a is rotatably attached to the boss portion of the chuck base 5, and a spiral lead groove 8 is formed in the actuating plate 7. A protruding pin 6b is slidably fitted therein, and by rotating the operating plate 7, each movable plate 6a moves on the chuck base 5 together with the chuck pawl 6 due to the linkage between the lead groove 8 and the pin 6b. It is slid in the radial direction. A pinion 10 is provided on a part of the slide plate 4 and rotates by meshing with the teeth 7a of the actuating plate 7 when the knob 9 is rotated. Further, an operating rod 4a is connected to the back surface of the slide plate 4, and by operating a handle 4b that operates the operating rod 4a, the slide plate 4 can be moved together with the chuck base 5, the chuck pawl 6, the actuating plate 7, etc. It is designed to be able to slide up and down.

A pendulum 11 is attached to the inside and upper part of the machine base 1 so as to be able to swing in a pendulum manner by means of fulcrum bolts 12 screwed in from both the left and right sides in FIG. A support shaft 15 is attached to this pendulum 11 and is horizontally perpendicular to the rotational axis of the pendulum 11.A support shaft 15 is attached to the support shaft 15, and a support shaft 15 has two parts integrally formed at the upper end of a base rod 14 formed in a substantially arc shape. The fork-shaped attachment part 14a is the pendulum 1
The base rod 14 is pivoted across the pendulum 11.
The support shaft 15 is mounted so as to be swingable in the left-right direction about the axis of the support shaft 15, and to be swingable in the front-rear direction about the axis of the support shaft 15.

One end of an engraving shaft 16 is fixed at a predetermined position near the upper end of the base moving rod 14, and the tip of this engraving shaft 16 passes through the hollow portion 5a of the chuck base 5, and a ring 29 is held by each chuck pawl 6. It extends to almost the center of the An engraving needle 17 having a diamond at the tip is attached to the tip of the engraving shaft 19 with the tip facing downward so that metal engraving can be performed.

The lower part of the base moving rod 14 is curved forward, and a copying needle support part 18 is attached to the tip thereof, and a copying needle 19 is attached to this copying needle support part 18 with the tip facing downward. When the base rod 14 provided in this way is suspended in a natural state, the axis of the engraving needle 17 attached to the engraving shaft 16 and the axis of the copying needle 19 are the intersection of the axes of the pendulum 11 and the support shaft 15. It is provided perpendicularly on a line C that is orthogonal to the line C.

Reference numeral 20 denotes a mounting part for the model plate 26 formed on the base 2, which is provided so that the model plate 26 formed in a rectangular shape can be slid in the left and right direction.
Engagement pieces 21a and 21b having a substantially hook-shaped cross section are arranged opposite each other at a predetermined interval to form a guide groove 22 having a substantially dovetail groove shape, and a notch 23 is formed approximately at the center of one of the engagement pieces 21a. At the same time, the same notch 2
3 is provided with a positioning member 24 for a model plate 26 so as to be retractable into the guide groove 22 via a spring 25.

Reference numeral 26 denotes a model plate, and the model plate 26 is formed into a rectangular shape having a width and a predetermined length that can be inserted into the guide groove 22 between the locking pieces 21a and 21b. longitudinal edge 26
From a, 26b, copy character strings A1, A2,
A3, A3 are engraved. As shown in FIGS. 3a and 3b, each copying character string has cursive uppercase letters and uppercase numbers engraved on one side of the character string A1 at predetermined intervals.
2 is engraved with alphabetic cursive lowercase letters and lowercase numbers in the opposite direction to the character string A1, and
In addition, on the other side, character string A3 (the back side of character string A1) is engraved with alphabetic uppercase letters and uppercase numbers, and character string A4 (character string 2
(back side) are engraved with printed uppercase letters whose font is smaller than the uppercase letters of the alphabet of character string A3, and numbers of the same size as the uppercase letters, and on the edges 26a and 26b, the pitch between the letters for copying is engraved. The locking recesses 27a, 27 at a pitch corresponding to
b is recessed. When each character string A1, A2, A3, A4 of the model plate 26 formed in this way is inserted into the guide groove 22 as the locking piece 21a side of the mounting portion, each character string A
1, A2, A3, A4 center line c1 and copying needle 19
It is formed so as to be substantially aligned with the tip of the line C, that is, with the line C.

The ring 28 is carved by the engraving machine configured as described above.
To engrave characters on the inner surface of the ring 29, operate the knob 9 and hold the ring 29 between the chuck claws 6.
The tip of the engraving needle 17 is located approximately at the center of the ring 28. Next, positioning member 2 of model board 26
4 is moved back against the spring 25. In this state, select a character string to be engraved from the character strings A1 to A4 on the model board 26, insert the same character string into the guide groove 22 as the locking piece 21a side, and insert the copying character to be engraved into the copying needle. Position it almost directly below 19. At the same time, the positioning member 24
is moved again to the model plate 26 by the force of the spring 25.
The model plate 26 is held immovably in that position by engaging with one of the locking recesses 27 of the model plate 26.

After this, the operating rod 4a and the operating handle 4
When the slide plate 4 is slid upward by the operation b, the ring 28 held between the chuck claws 6 also rises, and the inner peripheral surface of the ring 28 is pressed against the tip of the engraving needle 17. When the copying needle 19 is operated to follow the letters on the model board 26 while maintaining this state, the engraving needle 17 operates in a state in which it is in pressure contact with the inner peripheral surface of the ring 28 via the pendulum 11 and the support shaft 15. As a result, the characters of the model plate 26 are engraved in a reduced size on the inner peripheral surface of the ring 28. Note that the characters for copying on the model plate 26 are generally scaled down to about 1/5 or 1/6 and engraved on the inner peripheral surface of the ring 28. Also, this copying needle 1
The movement of the engraving needle 17 accompanying the movement of step 9 is such that the base rod 14 is suspended in its natural state, and the axis of the engraving needle 17 attached to the engraving shaft 16 and the axis of the copying needle 19 are aligned with the swing hole 11 and the support shaft. Since it is provided perpendicularly to the line C that is perpendicular to the intersection of the axis with
Although the tip of 9 performs arc-shaped operation, the engraving needle 1
The tip of No. 7 is operated almost linearly to engrave characters of approximately uniform depth on the inner circumferential surface.

After the first character is engraved on the inner circumferential surface of the ring 28 in this way, the slide plate 4 is lowered to release the pressure contact of the inner circumferential surface of the ring 28 with the engraving needle 17, and then the chuck base 5 is attached to the ring. 28
position by rotating it at a predetermined pitch. Then, the next character following the first character is selected from the model board 28. In this case, for example, if a character string can be selected from the initially set character strings, the model board 28 is moved left and right in that state to set the character string. In addition, if the next character is not in the same set character string, pull out the same model board 28 and insert the selected character string into the guide groove 22 as the locking piece 21a side of the mounting part 20, and set that character. is engraved on the inner peripheral surface of the ring 28 in the same manner as the shape. By repeating this operation, desired characters are sequentially engraved on the inner peripheral surface of the ring 28.

In this way, according to the engraving machine of this example, since the copying characters A1 to A4 are arranged along the front and back edges 26a and 26b of one rectangular model board 26, the positioning member is used as in the conventional case. 24, you can select the character to be engraved by sliding it left and right from among the set character strings in the model board mounting part 20. Also, when selecting from other character strings, positioning Model board 2 by operating member 24
By extracting 6 and inserting a desired character string, a desired character can be selected from the character string. In this way, the model board 26 can be easily inserted and removed from the mounting part 20 by simply operating the positioning member 24, so the character strings on the model board 26 can be easily replaced and set, so desired characters can be set extremely efficiently. It can be engraved.

(Effect of the invention) Now, the present invention has a pendulum attached to the machine base by a support bolt to control the engraving movement in the arc direction of the inner circumferential surface of the ring, and a pendulum that controls the engraving movement in the width direction of the inner circumferential surface of the ring. As shown in FIG. The machine consists of an engraving shaft with an engraving needle, which operates the copying needle by imitating the copying characters on the model board placed directly below the copying needle, and operates the engraving needle at a constant reduction rate relative to the amount of operation of the copying needle. In a ring engraving machine that engraves characters on the inner peripheral surface of a ring, the intersection of the support bolt and the support shaft and the axes of the engraving needle and copying needle are arranged on the same line, and the model plate is formed into a rectangular shape. The model is provided so as to be slidable in the left-right direction in a guide groove provided on the base of the machine, and copying letters are arranged on a line spaced a predetermined distance from the front and back edges of the model plate with the same line as the center. When the plate is inserted into the guide groove, the tip of the copying needle and the center line of the copying character are aligned. Therefore, since the copied characters are arranged along the front and back edges of a single rectangular model board, by operating the positioning member in the same way as in the past, the set character string can be placed in the model board mounting section. You can select the character you want to engrave by sliding left and right from the cursor, and if you want to select from other character strings, operate the positioning member, pull out the model board, insert the desired character string, and set. This allows you to select the desired character from the character string. In this way, the model board can be easily inserted and removed from the mounting part simply by operating the positioning member, so the character strings on the model board can be easily replaced and set, so the desired characters can be engraved extremely efficiently. be able to.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view of the engraving machine, Fig. 2 is a longitudinal sectional view, Figs. 3 a and b are plan views of the model board, and Figs. The figure shows a conventional example. 1... Machine base, 2... Base, 11... Pendulum,
12... Support bolt, 14... Base moving rod, 15...
Support shaft, 16...Engraving shaft, 17...Engraving needle, 19
... Copying needle, 22 ... Guide groove, 26 ... Model plate, 26a, 26b ... Edge, 28 ... Ring,
A1, A2, A3, A4... copy character string, c1...
...Pattern string center line.

Claims (1)

[Scope of utility model registration request] A pendulum attached to the machine base by a support bolt so as to control the engraving movement in the arcuate direction of the inner peripheral surface of the ring, and a support horizontally orthogonal to the pendulum so as to control the engraving movement in the width direction of the inner peripheral surface of the ring. It consists of a base moving rod whose upper end is pivotally supported on a shaft, a copying needle vertically supported at a lower part of the base moving rod, and an engraving shaft having an engraving needle attached at an upper part of the base moving rod, The copying needle is operated by copying the copying letters on the model board placed directly below the copying needle, and the engraving needle is operated at a constant reduction rate relative to the amount of operation of the copying needle to engrave the letters on the inner circumferential surface of the ring. In the ring engraving machine,
The intersection of the support bolt and the support shaft and the axes of the engraving needle and copying needle are arranged on the same line, and the model plate is formed into a rectangular shape and slid in the left and right direction in a guide groove provided on the base of the machine base. In addition, when the copying characters are arranged on a line that is a predetermined distance apart from the front and back edges of the model plate, with the same line as the center, and the model plate is inserted into the guide groove, the copying characters will be aligned with the tip of the copying needle. A ring engraving machine configured to match the center line of characters.