JPH04129657A - Automatic gem polishing method and machine - Google Patents

Abstract

PURPOSE:To make a work pressure holdable constant by equipping various adjusting functions, memory and control functions, also performing in order motions set in advance by sequence. CONSTITUTION:A motor M2 for lift is fitted on the machine frame 2 on a base 1, and an encoder 20 and a rotation detecting sensor 21 on a machine base 3. A horizontal detection sensor 22 is installed at the lower part of an arm 12, and a polishing direction detecting sensor 24, etc., are set up at the outside of a scale plate 23 fixed to the outside of a head support shaft 13 at the tip of the arm 12. A work is then polished while its abutting with the set pressure on the lap for polishing, after setting a cut angle as well as performing indexing, by a preset sequence. Each part is thus automatically motioned as per preset conditions, also a constant polishing pressure can be kept by the sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic jewelry polishing method and polishing machine for fully automatic polishing of jewelry (eg, diamond).

(Prior art) Conventionally, semi-automatic machines with a flat plate have been frequently used for polishing jewelry, but single-purpose automatic polishing machines are also known, such as cabochon profile polishing machines or facete ink machines. was.

(Problems to be solved by the invention) However, when semi-automatic machines are used, not only does the quality of the product vary greatly depending on the skill of the worker, but also the work efficiency is difficult to improve. There was a problem. Furthermore, single-use machines have the problem of requiring manual labor every time the polishing method changes, and that it is difficult to automatically adjust the polishing pressure and other parameters.

(Means for Solving the Problems) However, the present invention solves the problems of the conventional art by providing various adjustment functions, detection functions, storage and control functions, and sequentially performing preset operations according to a sequence. We created a fully automatic polishing machine that solved the problem.

In other words, this invention uses a preset sequence to
This automatic jewelry polishing method is characterized in that after indexing and determining the cut angle, the workpiece is brought into contact with a polishing lap at a set pressure and polished. In addition, the invention is characterized by performing indexing according to a preset sequence, determining the cutting angle, automatically selecting the cutting direction, and then polishing the workpiece while bringing it into contact with a polishing lap at a set pressure. This is an automatic jewelry polishing method. Next, the invention of the device is to set the swing means provided with the swing means on the machine base, attach the base of the swing head arm holder so as to be horizontally rotatable, and attach the arm to the '6'1jiE[E arm holder. The proximal end of the arm is attached to be rotatable in a vertical direction, each arm is provided with a power means and a detection means, and the arm is provided with means for controlling a cutting angle and a cutting direction, and a protractor is attached to the tip of the arm. The automatic jewelry polishing machine is characterized in that the input terminals of each of the power means are connected to the output of a controller having a built-in sequencer. Further, the power means is a hydration system and its transmission mechanism, and the detection means is a sensor.

(Function) According to the present invention, each part automatically operates according to preset conditions through sequence control, and a constant polishing pressure can be maintained using a sensor.

Also, in diamond tinting, the angle at which grinding is possible can be automatically found.

(Example) Embodiments of the invention will be described based on the accompanying drawings.

In FIGS. 1 and 3, a machine base 3 is constructed by a base j and a machine frame 2, a swivel motor 4 is fixed to the machine base 3 via an elevating frame 5, and a swivel motor M3 is attached to the opposite side of the arm I2.
is installed vertically, and a pulley 6 is fixed to its dryer shaft 19. A swivel shaft 7 is vertically installed in the center of the swivel motor 4, a pulley 8 is fixed to the swivel shaft 7, and the base of an arm holder 9 is fixed to the swivel shaft 7. Attach the belt 10. The base of an arm 12 is installed on the arm holder 9 by a horizontal shaft 11, and a facet 15 is fixed to the tip of the arm 2 via a head support shaft 13 and a holder 14, and one side of a work shaft 16 is fixed to the facet 15. is fixed.

On the machine frame 3, a lifting motor M2, an encoder 20, and a rotation detection sensor 21 are attached to the machine frame 2F on the base 1.

A horizontal detection sensor 22 is installed at the bottom of the arm 12, and a polishing direction detection sensor 2 is installed at the tip of the arm 12 on the outside of a scale plate 23 fixed to the outside of the head support shaft 13.
4 is installed, and a dryer M for rotating the head support shaft 13 is also installed.

A dryer M for setting the cut angle is attached to the head support shaft 13 via a holder 14, and a cutter M4 for setting the angle is fixed to the facetter 15. The shaft of the motor M2 is connected to a ball screw 27 via a coupling 26, and is engaged with a nut 25 of the lifting frame 5 (FIG. 4).

Next, FIGS. 5 and 6 show the arm balance device. That is, a support shaft 29 is installed on the tip end side of the arm holder 9 via a bracket 28, one end of a weight rod 3o is fixed to one side of the support shaft 29, and a weight 3o is fixed to the other end of the weight rod 30.
1 in a slidable manner, and the arm holder 9
A receiving piece 33 with a weight rod of 3° is provided on. On the other side of the support shaft 29, a receiving roll 34 of the arm 12 is pivotally supported via a projecting piece 32. The arm holder 9 is provided with a horizontal detection sensor 22, a stopper 36 that contacts the steel ball 35, and an arm detection sensor 37. The arm 12 is adjusted so that it becomes horizontal when the stopper 36 comes into contact with the steel ball 35. In this case, the arm detection sensor 37 must be ON. For example, when raising the workpiece axis by ]mm,
The arm detection sensor 37 is adjusted so that the arm detection sensor 37 is turned off. The arm detection sensor 3
7 detects when the arm 12 rises upward for some reason. Also arm 12
The horizontal detection sensor 22 must be ON when the position is horizontal.

Next, the adjustment screw 38 is used to adjust the horizontal detection sensor 22 so that it turns OFF when the workpiece axis is raised, for example, by 0.05 mm. Further, the adjustment in microns is assumed to be performed by the amplifier 39 of the horizontal detection sensor (FIG. 9). Said faceta 15
As shown in FIG. 8, a gear 41 fixed to a rotating shaft 40 of a motor M6 is interlocked with a gear 44 fixed to a shaft 45 of a ohm 43 via an intermediate gear 42. As shown in FIG. Therefore, the rotation of the tractor M5 passes through the ohm 43 to the protractor 4.
6 and the workpiece axis 16 relative to the polishing lap 47
Set the angle accurately.

The device of the present invention attaches a rough stone to a work shaft 16 and automatically performs various facet cuts, and has the following features.

+1) According to the device of the present invention, the pressure during processing can be kept constant (by adjusting the weight 31).

(2) By setting a sequence for the operation of each part and entering a program into the controller, all or part of the cutting process can be performed fully automatically.

(3) If there is a surface that cannot be machined depending on the polishing direction relative to the crystal axis, such as with a diamond, the machine detects the optimal polishing direction and performs the cutting.

(4) Programs can be input to the controller either manually or from a computer.

(5) It can be easily attached and removed at the desired position using a magnet, independent of the polishing machine body.

The controller in this invention is, for example, as shown in FIG. That is, the outputs of the various sensors 21, 22, and 24 are converted to the corresponding values M+.

M2. M,,M4. M, each axis rotates respectively, rotates the corresponding axis, thereby inputting at the required location displayed on the panel 49 of the controller,
The switch is turned ON, OFF L, and displayed on the display board 51.

The sequence in this invention is configured as follows.

+1) Rapidly feed (2 axes) to the position immediately before cutting starts (set with DIP switch).

(2) Slow feed (2-axis) until it hits the wrap (Sky 7).

(3) When it hits the lap (Sky 7), the horizontal detection sensor turns OFF.

(4) When polishing starts and the arm 12 descends, the horizontal detection sensor turns on, so the two axes are lowered.

(5) Repeat the above steps until the cutting depth setting value is reached.

(6) When the set value is reached, the current state is maintained for a certain period of time, then it increases and the index is sent.

(7) Repeat steps (1) to 6 above.

(8) In (3) above, if the horizontal detection sensor does not turn off after a certain period of time, the cutting direction is automatically changed.

(9) In (3) and +4 above, it can be expected that the horizontal detection sensor will repeatedly turn ON and OFF due to vibrations, etc., so it can be made more stable by performing the process as in (8).

The control port 49 in this invention is, for example, the seventh
It is configured as shown in the figure. The control port 4
9 is provided with an adjustment switch 5o at the top, a cutting status current display section 51 below it, and cut display lamps 52 provided on the left side below it for the number of cuts.
The cut part is flashing and the already cut part is lit. A sequence program is displayed on the right side, and below it is a direction indicator 53 for the head support shaft, below which manual buttons 54 are arranged in parallel, and at the bottom line is a - hour/stop switch button 5.
5. Main switch buttons 56 and others are arranged in parallel.

58 is a sequence program.

Therefore, when the main switch button 56 is pressed, each part operates in sequence according to the sequence, but it can be manually switched to stop at - or other times as necessary.

Conventionally, since there is a directionality when cutting a diamond, each cut is performed by considering the directionality of the workpiece, but according to the present invention, all of these points can be automated.

For example, the cutting direction of the curette Q is determined by the hour number (1 to 12) on the clock face 57 as shown in FIG.

That is, in FIG. 42, Q is the direction of 1, and Q2 is the direction of 5. Therefore, the cut surface of the workpiece is shown in Figures 14 and 16.
The direction of the curet of each part is determined and controlled as shown in FIG. 18, FIG. 20, and FIG. 22. Also, the order of cutting is, for example, Fig. 13, Fig. 15, Fig. 17, Fig. 12.
Display numbers on each side as shown in Figure 1, and cut in the order of these numbers. Since all such instructions are given in sequence, they can be carried out smoothly.

Furthermore, as shown in Figure 11, the men facet is done as shown in (d), the girdle facet is done as shown in (C), the star facet is done as shown in (b), and the final result is as shown in fa). .

(Effects of the invention) According to this invention, indexing, cutting angles, and polishing can be performed fully automatically, which allows advanced processing to be performed with high efficiency without depending on the skill of the operator. effective. Furthermore, since the processing pressure can be kept constant and the cutting order can be freely set, it is possible to not only improve processing quality but also to process a large quantity of homogeneous products.

[Brief explanation of the drawing]

Fig. 2 is a front view of the apparatus for implementing the present invention, Fig. 2 is a plan view, Fig. 3 is a right side view, Fig. 4 is a left side view, and Fig. 5 is a view of the weight for adjusting processing pressure. Fig. 6 is a plan view showing the installation state, Fig. 6 is a front view, Fig. 7 is an enlarged plan view of the controller panel, Fig. 8 is an enlarged view of a partially cut away faceter, and Fig. 9 shows the control system. Figure 1O is a front view showing the adjustment structure of the arm, Figure 11 is a diagram showing the relationship between the cutting section and the display (control board), and (a) shows the end of cutting;
fb) shows a star facet, (c) shows a girdle facet, and (d) shows a men facet. FIG. 12 is a diagram showing the direction of the culet with respect to the center 0 of the skiff, in which Q indicates the direction of 1 and Q2 indicates the direction of 5. Figures 13, 15, 17, 19, and 21 are diagrams showing the order of cuts in each cut, Figures 14, 16, 18, 20, and 22, respectively. Each figure shows the direction of the curette in each cut. 1... Heath 2... Machine frame 3... Machine base 4... Swivel heath 5... Lifting frame 7
...Swivel axis 9...Arm holder 1
2...Arm 13...Head support shaft 14...Holder 15-...Faceta 16
...Work axis 20...Encoder 21.
...Rotation detection sensor 22...Horizontal detection sensor 24
... Polishing direction detection sensor 30 ... Weight rod 31 ... Weight 22 ...
・Horizontal detection sensor 39...Amplifier 27...Arm detection sensor 38...Adjustment screw 46...Protractor 47...Polishing lap 49...Control panel 50...Adjustment switch 51... Cutting status current display section 52...Cut display lamp 53...Direction indicator 54...Angle cut button 55...-Time stop switch button 56...Main switch button 57...Index switch Button 58...Sequence program M,...Head support shaft rotation motor M2...Motor for raising and lowering the entire body M,...Rotating motor M4...Spindle index motor M6...Hair for cutting angle adjustment Fig. 4 / ] (Basin Fig. 6 Fig. 9 (End-Music Ruta') Fig. 56 (Start end Tanno Fig. / 39 (Intensifier) Fig. 10 M4, Ms Fig. 11 ( a) (C) (b) (d) (Sgoof Y set) (Ku 5 Fu Ding 7 Shito) Figure 12 Figure 13 Figure 14 Funeral Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22

Claims (1)

[Claims] 1. An automatic jewelry device characterized in that, after indexing and determining the cut angle according to a preset sequence, the workpiece is brought into contact with a polishing lap at a set pressure and polished. Polishing method 2 The workpiece is indexed according to a preset sequence, determines the cut angle, automatically selects the cutting direction, and then polishes the workpiece while contacting it with a set pressure against the polishing lap. Jewelry automatic polishing method 3 A swing base provided with a swing means is set on the machine stand, the base of an arm holder is attached to the swing base so as to be horizontally rotatable, and the base end of the arm is rotated vertically to the arm holder. The arms are movably mounted, and each arm is provided with a power means and a detection means, and the arm is provided with means for controlling a cutting angle and a cutting direction, and a protractor is attached to the tip of the arm, and the input side of each of the power means is Automatic jewelry polishing machine 4, characterized in that the automatic jewelry polishing machine is connected to the output of a controller having a built-in sequence.The automatic jewelry polishing machine according to claim 3, wherein the power means is a motor and its transmission mechanism, and the detection means is a sensor.