JPS58177262A - Long-distance annular vibrating barrel working machine equipped with interlocked electric motor - Google Patents

Abstract

PURPOSE:To permit the working suitable for the state and working purpose etc. of a mass by varying the number of revolution and the phase difference in the revolution angle of a plurality of motors each having an unbalance weight, when a long-distance annular barrel is vibrated. CONSTITUTION:A plurality of motors 5 and 6 each having an unbalance weight installed are controlled by the respective frequency converter, and the number of revolution can be varied. According to the conditions set by a control panel 15, the revolution of another motor is controlled by a processor 14, having the revolution of one motor as the standard. Thus, a barrel 3 is vibrated in the vibratory mode suitable for the working conditions.

Description

Detailed Description of the Invention This invention makes the rotation speed and rotation angle phase difference of a multi-cylinder electric motor equipped with unbalanced weights variable, and when exciting a large, long-distance spherical barrel, the mass shape ( In order to perform machining that suits the purpose, such as the type of workpiece and its charge, the type of polishing stone and its charge, the type of compound, etc.), the purpose of machining (rough machining or finishing machining), and the time required for circumference. The present invention relates to an interlocking long-distance annular vibrating barrel processing machine that can be controlled in a controlled manner.

Conventionally, in this type of processing machine, the applicant proposed installing multiple cylinder oscillators and synchronizing the rotation angle phase to stabilize vibration machining and improve machining efficiency, but according to this method, the electric motor Since the rotation speed of the machine is constant, it is not possible to respond immediately when the machining conditions change or when changes need to be made at the same time.

However, in this invention, a plurality of relatively inexpensive general-purpose motors (for example, three-phase induction motors, etc.) are installed in the longitudinal direction of the barrel, and each is controlled by a frequency converter (inverter) to make the rotation speed variable. Using the rotation of one electric motor as a reference, detecting the rotation angle phase shift of the rotation shaft of other electric motors,
Since it is controlled by a microprocessor (cutting type control device) to obtain the required lead angle, it is possible to change the rotation speed of the multi-cylinder motor and adjust the lead angle, making it possible to adjust the machining conditions. Since it is easy to modify, machining conditions suitable for the purpose can be adopted, and the VC has succeeded in obtaining an ideal long-distance vibrating barrel machining machine with an interlocking electric motor.

The details of the apparatus of this invention will now be explained with reference to FIGS. 1 and 2. Although this embodiment shows a case where the rotations of two electric motors are synchronized, two or more electric motors can be controlled in the same way. That is, the main motor S and the slave motor B are installed vertically on the bottom plate t in the central space of the barrel 3. A relatively inexpensive general-purpose motor (such as a three-phase induction motor) can be used for this motor. Unbalanced weights of 10°I are installed at the upper and lower shaft ends of these motors, respectively.
Attach Q, a, //, // a (it is also possible to use it by attaching it to only one side), give barrel vibration by the centrifugal force generated by the rotation of the main shaft, and create a spiral flow in the mass around the barrel axis. Along with the motion, it gives a circular motion in the axial direction to process the workpiece. In this case, the lead angle between the upper and lower weights is selected to optimize these movements, but for the barrels of the structure shown in Figures 1 and 2, the lower lead angle is O0~ /gθ0, optimally 1200 to isoo, and used with a fixed angle. However, when using the structure of patent application Sho St-1qqo3a, it is also possible to vary this angle by the processor and select the optimum angle during operation. The total length of the barrel is several times to several tens of times the total width, and optimally it is 5 times to /S @ inside and outside, and a large number of springs 2 are arranged on the bottom of the barrel 3 and on the machine base 1. A pair of semi-circular barrels 3a, 3b facing each other at both ends are mounted on the spring coater 2.
The barrel 3, which is connected by a pair of parallel linear barrels 3c and 3d and integrated into an annular shape, is suspended and supported so as to be able to vibrate. 2. The main mechanism S is rotated by a commercial frequency power source 7 via a frequency conversion device #ga. Further, the slave motor 1 is connected to a frequency conversion device gb and rotated by a variable frequency power supply at a specified rotational angular velocity. An upper weight 10 is attached to the rotating shaft 9, 9a of each electric motor. /θa and downward weight//,
//a are attached with a predetermined lead angle, and a known signal generator (encoder) is fixed to each rotary shaft 9, 9a and the machine base l./3. /3a and flexible cable /2. D and a are connected to transmit the rotation of the rotating shafts 9 and 9a to the signal generators /3 and /3a. The signal generators /3 and /3a are connected to the processor Fugu, and the processor /4I is connected to the frequency converters ga and gb.

As shown in FIG. 3, an upper weight 1 is used as the signal generator.
A dog/9 is provided at the tip (or above) of 0 (it can be a downward weight), and a magnetic proximity switch 20 (sensor) is provided outside (or above) it to detect the passage of an unbalanced weight. However, the same effect can be achieved. 1 and 15 is a control panel that includes knobs for adjusting the rotational speed of the main motor S and the lead angle of the slave motor B, and a scale plate for indicating these digitally or analogously. Accompanying.

Next, FIGS. 1 and 5 show other embodiments in which the shape of the barrel is changed.

That is, the semicircular barrels 3a and Jb are respectively in the flow direction of the mass (
The linear barrels 3c and 3d are installed with a downward slope in the direction of mass flow (arrows /fa, /gb), respectively.
gc) mounted with an upward slope and a semicircular barrel,
? a...? b and linear barrels 3G and 3d are connected smoothly on the inner surfaces at their respective ends, and the signal generator, processor, frequency converter, etc. are all the same as in the previous embodiment. When the barrel is shaped like this, the flow in a part of the corner is further improved and the sorting effect is also improved.

Next, Fig. 6 shows the machine shown in Figs. 1 and 2 in which seven barrels 3' of similar shapes are installed on the outside of the barrel 3, and it is a processing machine with double barrels inside and outside. . According to this embodiment, it is possible to perform two different types of processing at the same time with one processing machine, for example, performing rough finishing with the outer A barrel J, and then performing gloss finishing with the inner barrel 3. You can do it too.

It is also possible to carry out processing such as polishing in the outer barrel J, followed by drying in the inner barrel 3 charged with desiccant material such as sawdust and sorghum powder (concob). In addition, it is possible to perform not only double barrels but also multiple barrels (triple or more) inside and outside of similar shapes to perform various types of processing at the same time. It is also possible to configure one in multiple stages. Next, an electronic circuit that controls the rotational speed of the main motor and the advance angle between the unbalanced weights attached to the plurality of cylinders of the motor will be described. This circuit uses the rotational speed of one electric motor and the rotation angle phase of the unbalanced weight as a reference, and controls the rotational angle phase of the unbalanced weight of the other electric motor so that it takes a specified advance angle.

Further, the number of revolutions and the thickness of the lead angle can be arbitrarily set to 5 using a dial (volume) according to the structure of the barrel, processing conditions, and type of mass, and are displayed in an analog or digital manner. Furthermore, by using appropriate sensors, it is possible to perform so-called adaptive control in which these quantities are always controlled to optimal conditions. A flowchart of this control is shown in FIG. FIG. 3 is a system diagram in the case of analog instruction. In the figure, human power A and B are inputs from proximity switches, respectively, and a timer is for regulating changes in the advance angle. Figure 1 shows a system diagram in the case of digital display, and CPU shows the electronic circuit of the processor.

j.

The operation of this device will be explained based on the structure as described above. Abrasive materials and workpieces, as well as water and compound (hereinafter these charges will be collectively referred to as chemas) are charged into the barrel 3, and the main motor S and the slave motor A are driven. The main motor S rotates at a required rotational speed through adjustment of the frequency converter #ga, and the slave motor A rotates at the same rotational speed as the main motor S according to instructions from the frequency conversion device gb. Signal generator/? , /3 a inputs the generated signal to the processor (CPU) /+, and outputs the signal generator /,? , t3a to processor/4' to each electric motor S.

Enter the position at which the rotation axis of B is rotating. The processor/lI calculates the deviation between the rotational speed and rotational angle phase of the slave motor B based on the rotational speed and rotational angle phase of the main motor S, and calculates the deviation between the rotational speed and rotational angle phase of the slave motor B so that both chamber motors have the same rotational speed and a predetermined lead angle. Instruct frequency bed fluid replacement #gb. The processor/gb is designed to provide the same rotational angle phase for the slave motor B at the same rotation speed as the main motor S.
Change the frequency to the one specified, and synchronize by constantly checking the frequency. Therefore, the mass inside the barrel 3 has a normal helical flow motion, and the workpiece is polished well.
The mass is raised through the fixed chevron weir, 2/ and the flap 2, and the workpieces are separated by the sorting net 7 and carried out of the system to be processed on the line. Furthermore, if the flap is raised, the mass circulates within the barrel 3, so batch processing can be performed. Reference numeral 22 is a flow regulating weir for preventing uneven distribution of mass and making the mass amount uniform, but it is not necessarily necessary for this invention. In the above embodiment, a case was described in which a number of electric motors were controlled. However, when controlling a plurality of electric motors, the same number of frequency converters and signal generators as the slave motors are required, but only one processor is required. It can be done on a stand. Increasing the rotational speed with an unbalanced weight of the same weight will increase the excitation force of the weight, which will improve the amount of polishing, but the surface roughness will tend to become rougher, so the barrel structure, type of mass, unbalance, etc. Adopt an appropriate rotation speed according to the weight. There is peace of mind attached to master and slave motors. For example, the amplitude and flow condition will be good in the part of the barrel row where the advance angle is ahead (so you can change the advance angle by looking at the flow of the mass to obtain the appropriate flow. The angle is usually within 60 degrees.Although the above embodiment describes the case where the apparatus of the present invention is used for polishing, it goes without saying that it can also be used for processing such as stirring, mixing, or pulverizing the contents. This also belongs to the technical scope of this invention.

As described above, according to the present invention, the unbalanced weight rack attached to the multi-tube electric motor IN'lI fixed below the long-distance vibrating barrel row rotates at a specified rotation speed and adjusts the advance angle between the unbalanced weights. Since it can be controlled to a specified value, it is possible to maximize the polishing ability (it is possible to perform line processing of workpieces, it is very robust and has excellent safety, etc.). There are 0 effects

[Brief explanation of the drawing]

FIG. 7 is a plan view of an embodiment of the present invention, FIG. 2 is a detailed sectional view, FIG. 3 is a front view of an embodiment of a signal generator using a proximity switch, and FIG. The plan view and Figure S when using the inclined barrel in the embodiment are the same (front view,
Fig. 6 is a plan view of another embodiment of this invention using a co-heavy barrel, Fig. 7 is a flowchart of an electric circuit for carrying out this invention, and Fig. 3 is the same (in case of analog display). The system diagram and the figures are the same (the system diagram for digital display is shown. /・Kakidai 21I@Spring y,,?',3
a, 31) , ,? C, 3d -- Barrel g
@-Bottom plate S...Main motor B...Slave motor 7...
Commercial frequency power supply gB, gb...Frequency conversion device9.
9a@-Rotary axis /θ, 10aII-Upper unbalanced weight //, //a・-Downward unbalanced weight /Y, 72a@-Cable D, /, 3a" Signal generator /G-Processor /J- -Control panel /Otsu, /A' @ So flap /'), /7'-
-Selection net 1g, /ga, /gb, /gc -Yuyaji /9...Dog 〃...Magnetic proximity switch
λ/... Yamagata fixed weir n... Flow adjustment weir procedural amendment (Relationship with Kazuo Wakasugi, Director-General of the Self-Responsive Patent Office, 1, Indication of the Case, 1983 Patent Application No. S Otsu No. 3.27)
Patent applicant 4, agent (zip code 160) Address Tokumei Building, 29 Shinanomachi, Shinjuku-ku, Tokyo Telephone: Tokyo (353) 3 4 0 7 (actor) Z Contents of amendment (1) Specification page q/2 The line that says ``Vibrate the barrel'' should be corrected to ``Vibrate the barrel.'' (2) On page 9 of the specification, the phrase ``Frequency converter &bJ'' is corrected to ``Frequency converter gb.'' (3) Figures 1 and 2 are corrected as shown in separate figures. List of attached documents

Claims (1)

[Claims] l A pair or multiple pairs of semicircular barrels facing each other at both ends;
In a device installed to enable intermittent vibration of a long-distance annular vibrating barrel in which both ends of the semicircular barrel are integrated with an equal number of pairs of parallel linear barrels, one vibrating barrel is set at a constant rotation speed in the longitudinal direction of the barrel. An imbalance in which a main motor and one or more slave motors connected to a frequency converter are installed with their rotational axes perpendicular, and an excitation force is applied to each rotational axis of the main motor and slave motors. The weights are fixed, a signal generator connected to a processor is provided on the rotating shafts of the main motor and the slave motor, the processor is connected to the frequency converter, and the unbalanced weights are moved in the same direction and at a set advance angle. A long-distance annular vibrating barrel processing machine with an interlocking electric motor, which is synchronized and rotates continuously to maintain A long-distance annular vibrating barrel processing machine 3 with interlocking electric motors according to claim 1, characterized in that each mass has an upward slope in the moving direction. The angles are represented analogously or digitally and are
A long-distance annular vibrating barrel processing machine with an interlocking electric motor according to claim 1, characterized in that W is made variable.