JPH02253903A - Automatic facetting machine - Google Patents

Abstract

PURPOSE:To automate fully a process from cutting to polishing in use of a machine by installing an attaching device equipped with transporting means on a frame, and also installing a plurality of work processing devices, and setting control systems of respective devices. CONSTITUTION:A work attaching device 2 is installed on the central part of one side in the upper part of a frame 1, and a cutting device 3 and polishing device 4 are installed on the upper lift and right side of the frame 1, and further, a washing device 5 is installed on the central part of both devices. The respective devices are operated successively by the control device within a control box 47. An overarm 13 is adjusted to a predetermined height, and then a work 38 comes over the cutting device 3. Accompanying the start of setting work, a motor 22 starts, and thus a grinding stone rotates, so that the cutting process is started as the work is brought into contact with the grinding stone.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic faceting machine for cutting and polishing precious or semi-precious stones.

(Prior Art) Conventionally, a wide variety of manual and semi-automatic faceting machines have been proposed and used, but none of them are fully automatic and involve mechanical processing.

(Problems to be Solved by the Invention) According to the conventional equipment, since it is highly dependent on human power, it is not only difficult to improve efficiency, but also the quality of the product varies significantly depending on the technical ability of the worker. Otherwise, there would be a problem in that it would be difficult to polish each facet surface and the angle of the cut with high precision.

In addition, even if some processing is automated, -processing-
Because of the machines, products are obtained through sequential processing using a wide variety of equipment, which inevitably leads to diversification of processing processes, which leads to problems such as longer processing times and more labor. .

(Means for Solving the Problem) However, the present invention installs a plurality of workpiece processing devices on the same machine, installs corresponding workpiece mounting devices, and controls the control devices for the processing devices and mounting devices. By adding this, the above-mentioned conventional problems have been solved.

That is, the present invention provides an automatic faceting machine characterized in that a workpiece mounting device equipped with a moving means is installed on the machine stand, a plurality of workpiece processing devices are installed, and a control system for each of the devices is attached. be. The moving means of the invention includes a lifting device and a rotating device.

The workpiece mounting device is constructed by fixing a faceta spindle bearing having a chuck for the workpiece mounting shaft, a faceta spindle indexing device, and a protractor to an elevating bearing. Further, the workpiece processing device includes a cutting device, a cleaning device, and a polysink device.

As described above, by providing a workpiece cutting device, a cleaning device, and a polishing device, products can be manufactured in a fully automatic manner by attaching a preformed stone to a predetermined size. However, if the order and angle of various facet cuts are stored in the control device, the operator can then instruct the workpiece to be attached, removed, and cut, thereby fully automating cutting, cleaning, and polysinking.

(Function) That is, according to the present invention, a workpiece mounting device, a plurality of workpiece processing devices, and a control system for each of the devices are attached to the same machine stand, so that the operator can set the workpieces and issue processing instructions. By doing so, various types of processing are performed sequentially with high precision and accuracy based on a predetermined sequence.

(Example) Next, an example of the present invention will be described based on the attached drawings.

A workpiece mounting device 2 is installed at the center of the upper side of the machine stand 1, and a cutting device 3 and a polysink device 4 are installed at the upper left and right sides of the machine stand 1 (in Fig. 3). A cleaning device 5 is installed to.

In FIG. 2, the workpiece mounting device 2 has a swivel shaft 7 rotatably inserted into a swivel bearing 6 fixed to the top surface of the machine base 1, a gear 8 is attached to the swivel shaft 7, and a swivel arm 9 is attached to the upper end. is fixed horizontally, a motor 10 is installed on the swivel arm 9, and the gear 8 is meshed with a pinion gear 11 fixed to the shaft of the motor 10. An example of the swivel arm 9 is provided with a sliding receiving plate 12 vertically, and a sliding piece 14 provided at the base of the over arm 13 is fitted into the sliding receiving plate 12 so as to be able to move up and down. A cutting ball screw 15 is screwed into a female screw (not shown) attached to the hole 14. The upper end of the cutting ball screw 15 is connected to the output shaft of a cutting motor 16 installed on the swivel arm 9.

A base portion of a faceter 18 is attached to the distal end side of the overarm 13 via a cutting pressure adjustment device 17.

The cutting device 3 includes a grindstone 20 fixed to the upper end of a rotating shaft 19 installed perpendicularly to the machine 1, a boo 9-21 provided at the lower end of the rotating shaft 19, and a motor 22 fixed to the machine 1. A belt 24 is attached to the pulley 23 (
Figures 1 and 2).

The polysink device 4 has a rotary shaft 25 installed vertically on the machine base 1, a finishing lap 26 is fixed to the upper part of the rotary shaft 25, and a pulley 27 is fixed to the lower part of the rotary shaft 25.
The belt 3 is connected between the pulley 29 of the motor 28 fixed to
0 (Figure 3).

The cleaning device 5 is a cleaning tank installed on the machine stand 1 and into which cleaning liquid is poured.

In the cutting pressure adjusting device 17, as shown in FIGS. 5 and 6, a base rod 32a of a facet arm 32 is attached to a guide column 31 so as to be movable up and down, and a facet mounting shaft 33 is rotatably attached to the tip of the facet arm 32. Possibly installed vertically. A protractor 3 is installed at the bottom of the facet mounting shaft 33.
4 is attached to the protractor 34, a plurality of faceta spindle bearings 35 are movably attached to the protractor 34, a faceta spindle 36 is rotatably fitted into the faceta spindle bearing 35, and the front end side of the faceta spindle 36 is A collet chuck 37 is connected to the top stick 39 of the workpiece 38.

The protractor 34 includes a motor 4 for setting the cut angle.
The index motor 41 rotates the index worm shaft 45 through gears 42, 43, 44, and the faceta spindle 3 is rotated by the rotation of the worm of the worm shaft 45.
6 to set a predetermined cut surface.

Further, the motor 40 for setting the cut angle is a worm 46.
By moving the protractor 34 through, the angle of the facet spindle bearing 35 can be adjusted and the cut angle can be set. In the figure, 48 is a protractor holder, 49 is a pressure gauge, and 50 is a pressure sensor.

Each of the devices is sequentially operated by a control device in the control box 47. That is, once the top stick 39 to which each workpiece 38 is fixed is attached to the collet chuck 37, when the start button is pressed, the swivel motor 10 is started, the pinion gear 11 and the gear 8 rotate the swivel shaft 7, and the workpiece 38 is adjusted onto the outer circumference of the grinding wheel 2°, and then the cutting motor 16 is started, the overarm 13 is adjusted to a predetermined height, and the workpiece 38 is brought above the cutting device 3. When detected by the detection device, the workpiece 38 is lowered by rotation of the swivel motor 10 until it comes into contact with the grindstone 20.

When the workpiece 38 comes into contact with the surface of the grindstone 2o in this way, the entire facetator 18 is pushed upward as shown by the arrow 51 in FIG.
2 also rises and is fixed to the tip of the over arm 13 and presses the contact piece 53 of the near gauge 49, so the pointer 54 of the linear gauge 49 indicates the pressing force. The linear gauge 49 is provided with a pulse circuit contact, which generates a pulse when the pointer 54 reaches a set value, rotates the motor 16, and slightly raises the overarm 13 for adjustment.

Further, a pressure sensor 50 is installed in the guide column 31, so that the workpiece pressure can be automatically controlled. Then, at this time, the cut angle setting motor 40 and the index motor 41 are respectively started and set to the initial set angle.

At the same time as the setting of the work is started, the motor 22 is started and the grindstone 20 is rotated, so that when the work comes into contact with the grindstone, cutting is started. After a certain period of time has elapsed after the start of the cutting process, the cutting motor 16 starts and lifts the workpiece 38 by an inch, and then the indexing motor 41 starts and gives the spindle 36 the necessary rotation angle.
Set the next cut surface. After lowering the workpiece 38 again, cutting is performed. Once all tone facets have been cut in this manner, girdle cutting and upper girdle cutting are performed in sequence to complete all cuts on the front side.

Next, the facetter 18 is moved onto the cleaning device 5, and the workpiece is cleaned with a cleaning liquid. After cleaning the workpiece 38 in this way, start the cutting motor 16 to lift the over arm 13, then start the swivel motor 10 to rotate the swivel arm 9, and remove the workpiece. When the workpiece 38 is moved onto the polysink device 4 and each side of the workpiece 38 is lapped by the same operation as the cutting process described above, finishing of the front side is completed.

The processing using the cutting device, cleaning device, and polysink device can be performed manually at first, and the instructions for each part can be stored in the storage device in the control box.
From the second time onwards, it can be fully automated.

Moreover, FIG. 7 shows a case where the workpiece is oriented diagonally upward,
Place the facetator in this position when inspecting the polishing condition or replacing the workpiece.

(Effects of the Invention) That is, according to the present invention, a workpiece mounting device equipped with a moving means is installed on the machine table, a plurality of workpiece processing devices are installed, and a control system for each of the devices is attached. This machine has the effect of fully automating everything from cutting to 4° sinking.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of an embodiment of Nono's invention, Fig. 2 is a partially cutaway side view, Fig. 3 is a plan view, and Fig. 4 is an enlarged plan view of the facet portion. Figure, 5th
The figure is an enlarged side view, FIG. 6 is an enlarged front view, and FIG. 7 is a side view when the device is oriented diagonally upward. 1... Machine base 2... Workpiece mounting device 3
... Cutting device 4 ... Polysink device 5.
... Cleaning device 7 ... Swivel shaft 9 ... Swivel arm 10 ... Motor 12 ... Sliding receiver 13 ... Over arm 16 ... Cutting motor 17 ... Cutting pressure Adjustment device 18...faceta 19.25...rotating shaft 20...grindstone 32...
Faceta arm 34... Protractor 36... Faceta spindle 38... Workpiece 39... Top stick Figure 2 Figure 3 b] 8 Figure 4 Figure 5 Rigid

Claims (1)

[Claims] 1. Automatic faceting characterized in that a workpiece mounting device equipped with a moving means is installed on the machine stand, a plurality of workpiece processing devices are installed, and a control system for each of the devices is attached. Machine 2 Claim 1 wherein the moving means is a lifting device and a rotating device
The automatic faceting machine 3 according to claim 1, wherein the workpiece mounting device is configured by fixing a faceta mounting shaft comprising a faceta spindle bearing having a chuck for the workpiece mounting shaft, a faceta spindle indexing device, and a protractor to an elevating bearing. Automatic faceting machine 4 according to claim 1. The automatic faceting machine according to claim 1, wherein the workpiece processing device includes a cutting device, a cleaning device, and a polysink device.