JPS62152668A - Fully automatic centrifugal floating barrel processing machine - Google Patents

Abstract

PURPOSE:To eliminate an idle time, by making processing baths detachable, providing transportation conveyers at the opposite sides of a processing machine and transporting a processing bath containing a processed workpiece from the processing machine to an unloader conveyer and a processing bath containing an unprocessed workpiece to a loader conveyer. CONSTITUTION:The rotation of a main motor is reduced when a prescribed processing time has elapsed to stop turrets 4, 5 at a predetermined position. The processing baths 14a, 14b are released at a position for taking out the processing path. At the same time, a manipulator claw at the side of an unloader is closed for holding the processing bath and transporting it to the position of an unloader conveyer 57 where the processing bath is placed on the conveyer 57 to be transported to the next process. Next, the turrets 4, 5 are turned by 360 deg./S (S represents a number of processing axes) for releasing the processing bath. After releasing of the processing baths is effected S/2 times, a processing bath containing a processed workpiece comes to the side of the unloader and a processing bath receiving plate without a processing bath comes to the side of the loader and then the former releases the processing bath and the latter is charged with the processing bath containing an unprocessed workpiece.

Description

[Detailed description of the invention] (Industrial field of application) This invention is aimed at unmanned centrifugal fluid barrel processing machines, and belongs to the industrial field of manufacturing, sales and use of fully automatic centrifugal fluid barrel processing machines. It is something.

(Prior Art) Conventionally, a fully automatic centrifugal flow barrel processing machine has been published by the same inventor as this application, but the processing tank was mainly placed inside the machine and the mass was exchanged by tipping it over. Furthermore, a device capable of taking the processing tank out of the system has been announced, but the taking out and charging were performed from the same direction (Japanese Patent Publication No. 55-46822).

(Problems to be Solved by the Invention) As described above, in the device in which the machining tank is tipped over inside the machine to exchange the mass, the machine must be shut down between discharging the processed corner mass and charging the unprocessed mass. It cannot operate and becomes a non-operating time. In addition, in a device that can take the machining tank out of the system, the structure is complicated in a system in which the machining tank containing the processed corner mass is taken out from one direction and the processing tank containing the unprocessed mass is charged from the same direction. and
It also required a large space.

(Means for Solving the Problems) However, this invention adopts a processing tank take-out method, and the direction of take-out of the processing tank containing processed corners is opposite to that of the processing tank containing unprocessed spaces. set in the direction,
The above-mentioned problems of the conventional method were solved by performing the processing from both sides of the processing machine and by adopting a simple and reliable structure for the clamping and rotating mechanism of the processing tank.

That is, in this invention, a machining tank loaded with a workpiece and media is rotatably installed between two turrets, and the turret is rotated at high speed to give the machining tank orbital motion and rotational motion.
In a centrifugal flow barrel processing machine that processes a workpiece stored inside a processing tank, a processing tank saucer is fixed on the main shaft of the processing tank that rotates the processing tank, the processing tank is mounted on the processing device 110, and the processing tank is mounted on the processing device 110, and A processing tank tensioning device is attached to the turret, an unloader conveyor and a loader conveyor are installed on both sides of the processing machine, and the processing tank is transported from the processing machine to the unloader conveyor, or from the loader conveyor to the processing machine. This is a fully automatic centrifugal flow barrel processing machine equipped with a manipulator that transports a processing tank.

In the above, the tensioning device of the processing tank has a double shaft at the bottom,
It is rotatably supported by a hollow shaft, the central shaft of the processing tank is configured to be slidable inside the hollow shaft, a hydraulic cylinder for lifting and lowering is provided in the upper part, and the lower end of the piston rod is configured in a box shape, The piston rod is rotatably connected to the tip of the central axis of the processing tank, and the box-shaped portion at the lower end of the piston rod is prevented from rotating by external rotation, but is configured to be movable up and down.

Of course, the processing tank tensioning device is not limited to the above structure.

Next, the number of main shafts of the processing tank is an even number, and two manipulators are installed on both sides of the turret diameter.

The media charged into the processing tank is a dry barrel processing media.

(Function of the Invention) Since the present invention employs the above configuration, it is possible to significantly shorten the time for mass exchange and to ensure various operations.

(Example) FIG. 1 and FIG. 2 show an overall external view of the apparatus of the present invention. The main body of the processing machine has a central shaft 2 rotatably attached to a frame 1, and an outer shaft 3 that rotates together with the central shaft 2 is fitted in the lower part of the central shaft 2, and an upper turret 4 is mounted on the outer shaft 3. and the lower turret 5 are fixed at a predetermined interval so that they can rotate together with the outer shaft 3.The rotation of the outer shaft 3 is caused by the sprocket wheel 58 of the main motor 6 and the chain 5.
9, the rotation is transmitted to the main sprocket wheel 7. A chain wheel housing 8 that supports the central shaft 2 above the main sprocket wheel 7 is fixed to the frame 1, and a chain wheel 9a is attached to the chain wheel housing 8.
, 9b are fixed. The maximum number of chain wheels 9a, 9b is the same as the number of main spindles of the processing tank, which will be described later, and there may be any number of them, but in Fig. 1, two are shown.
The number of machining tank spindles is six. Therefore, the structure is such that the three machining tank main shafts are rotated using one chain wheel 9a. Any number of machining tank spindles can be installed on one machine, but if an even number is used, the loading position and unloading position will be on an extension of the same diameter as shown in Figure 2, which is convenient, so it is usually Use an even number. Processing tank main shaft 10
a, 10b are bearinged on the lower turret 5, and can rotate on their own relative to the lower turret 5, and their drives are attached to the lower ends of the processing tank main shafts 10a, 10b, 10c... Processing tank rotation chain wheel 11a,
11b, 11c... and the chain wheel 9a,
9b is transmitted by the chain 60. The ratio of the number of teeth of both chain wheels 9a and 9b determines the ratio between the revolution number and the rotation number of the processing tank. For example, if the number of teeth of the chain wheels 9a, 9b is p, and the number of teeth of the tank driving chain wheel is q, then the processing tank main shaft rotates -p/Q during one revolution of the central shaft. In other words, this value is the ratio of the number of rotations and the number of revolutions of the main shaft of the machining tank, and this value is conventionally expressed as n/N. Although n/N can take a relatively wide range of values within certain limits, n/N=-1 is most widely used. When the machining process is finished and the machining tank is stopped at a fixed position, the main motor 6 is switched to slow rotation. For this purpose, a known frequency conversion device (commonly known as an inverter or frequency inverter, not shown in the figure) is installed to exchange the frequency of the power supply supplied to the main motor 6 to achieve low speed rotation. The processing tank is configured to be removable, and although the figure shows a case in which two widths are combined, there may be any number of processing tanks including -. A manipulator or a loader and an unloader are installed outside the processing equipment to load these processing tanks. Loader and unloader are shown in Figures 1 and 2.
As shown in the figure, they are provided on both sides of the processing machine and are symmetrical, but the structure may be the same. The structure of the loader and unloader will be explained later.

Both wet and dry media can be used in the barrel processing machine of this invention. In the case of the wet method, a polishing stone and a compound solution are mixed and used, and the cutting ability, deburring ability, radius, etc. are excellent, but liquid processing is required when automation is used.

In the case of a dry method, a media made of grains (made by crushing Kurji oysters, corn cobs, etc.) or plastic grains with abrasives, oils, and other additives is used, and is suitable for polishing. It has the advantage that it is easy to process the media because it is in a dry state.

The structure of the driving device for the machining tank is as shown in FIG.
Bearings 12a, 12b, 12C, . . . are provided on the main shaft 10a so as to rotate in the same direction
, 10b, 10c, etc.
, 13b, 13c, . . . are fixed. Processing tank 1
4a, 14b, 14c114d, 14e, 14f1...
・etc. shall be mounted on top of it. In Figure 1, processing W11
4a, 14b, etc. are mounted in two tiers, but they may be mounted in a single stack, or may be in three or more tiers. The machining tanks 14a, 14b, etc. are provided with a machining tank clamping device 15 provided directly above and on the upper turret 4.
a, 15b, 15c, - Clamped to WICc during T/III. This clamp device is used for processing tanks 14a, 14
b, etc., to keep the processing tank airtight during processing, to release the tightness and sealing of the processing tank after processing, and to prevent the hydraulic cylinder for lifting and lowering from rotating. R+: 4 is required, such as introducing fluid pressure that produces a UJ force of 17 even during planetary rotation. This structure will be described below. FIG. 3 shows a detailed diagram of the processing tank clamping device. This device consists of two middle shafts 17 and a machining tank main shaft 10a, which are configured to be rotatable with respect to a lower bearing 16 fixed to a turret 4. The hollow shaft 17 is internally connected to a central shaft 18 with keys 19a, 19b, 19c, and 19d. It is configured to be slidable and rotated together with the hollow shaft 17. The connection between the central shaft 18 (rotating part) and the hydraulic cylinder 20 (non-rotating part) for raising and lowering the central shaft is achieved by fixing a bushing 21 to the upper end of the central shaft 18, as shown in the figure, and using a piston rod 22 of the hydraulic cylinder 20. Insert the bearing 24 between the backing flange 23 fixed to the tip of the flange 23, and rotate and! i? It is configured so that it can be lowered.

The central axis 18 of the machining tank rotates with the above configuration.
7? due to the fixed hydraulic cylinder 20. A descending motion can be applied, and the processing tank can be tightened and released by this 7i+ descending motion. The fixing of the processing tank will prevent the processing [
Since the contents of the tank may escape under high acceleration, which is dangerous, hydraulic pressure is especially used for this tensioning cylinder 20.
After pressure loading, the pressure is shut off and care is taken to maintain the airtightness of the processing tank even if the source pressure drops due to a power outage, etc. A commercially available hydro unit can be used to convert from pneumatic pressure to hydraulic pressure. In order to prevent rotation of the lifting flange 23, that is, the piston rod 22, a rotation stopper 25 is provided fixed to the upper bearing 27, and its tip is fitted into a linear groove 26 provided in the lifting flange 23. Center of the processing tank @
A processing tank tension plate 28 is fixed to the lower end of the processing tank 18, and tightens the upper end of the processing tank when the piston rod 22 is lowered. In order to stop the turrets 4.5 in a fixed position, position regulating plates 29 are installed around either the upper turrets 1 to 4 or the lower turret 5, as shown in FIG. . The position regulating plate 29 is provided with a recess, and the position regulating knock 30 is fitted into the recess to be stopped at a fixed position.

Next, the manipulator will be explained. Two manipulators, a loader and an unloader, are installed on both sides of the processing machine. The processing tank containing the unprocessed workpieces is charged into the processing tank by a separately manufactured contents maintenance device, and when the processing tank has multiple stages (Figure 1 shows two stages), a multi-stage stacking device is used. The materials are stacked in multiple stages by the loader conveyor 56 and transferred to the front surface of the manipulator, and stopped at a prescribed position by the stopping device 33 shown in FIG. Furthermore, the machining tank containing the finished workpieces is taken out from the processing machine by an unloader and carried out of the system by an unloader conveyor 57, where it is overturned and the contents are discharged onto a sieve for sorting.

The relative positions of the manipulator and the processing machine are shown in FIGS. 1 and 2, and in more detail in FIG. 4. In the drawing, the processing tank in the processing machine is indicated by 140.14h,
Processing tanks on the transport device are indicated by 14k and 141. The loader and unloader have a processing tank of 14cx, 14k from 14h.
, to 141, or conversely to 14, 14j! From 11.14
Since the structure and operation are the same, only the charging side will be explained. Processing tanks 14k and 141 transported by transport rollers 32
The interior accommodates raw workpieces and media. This processing tank is stopped at a stop device 33 which is in a protruding state at the stop position. This processing tank is transported into the processing machine by a loader. The details of the structure of the loader are shown in FIGS. 5 and 6. Frames 34 and 35 are installed on both sides of the loader conveyor 56 at the front of the processing machine, and the two are connected to fix two guide shafts 36a and 36b.

Sliders 37a and 37b are provided to slide on the guide shafts 36a and 36b, and the machine base 38 is fixed by connecting them.

One end of the machine base 38 is connected to a piston rod 4o of a fluid pressure cylinder 39, so that the machine base 38 can be moved by movement of the piston rods 40 of the three fluid pressure cylinders. Below the machine stand 38 is a fluid pressure cylinder 4.
1 is fixed. A floating joint 43 is provided at the tip of the piston rod 42 of the fluid pressure cylinder 41.
A manipulator mounting base 44 is fixed thereto. The mounting base 44 has a manipulator mounting flange 49a149.
b is fixed, and bell crank-shaped manipulator claws 50a, 50b are attached to each mounting flange so as to be rotatable by a small angle, and both of the claws 50a,
At one end of 50b, there is a vi shock material 51a made of rubber or synthetic resin.
, 51b are fixed so that the processing tanks 14k and 141 are not damaged when the processing tanks 14k and 141 are gripped. The thin ends of the manipulator claws 50a, 50b are connected by a pin 52 so as to be rotatable through a small angle, and one arm is connected to a piston rod 61 of a hydraulic cylinder 53. Therefore, the movement of the piston rod 61 of the fluid pressure cylinder 53 opens and closes the manipulator claws 50a and 50b. A plurality of (three in the figure is shown) branch offices 45a are provided to guide the lifting and lowering of the manipulator mounting base 44.
, 45b, 45C are fixed, and R4 is formed so that they can slide inside bearings 46a, 46b, 46C fixed to the machine stand 38. A known shock absorber (shock absorber) 54a, 54b is provided above the machine base 38, and when the manipulator claws 50a, 50b move forward, the tip of the shock absorber hits the outer wall of the processing device, and the shock is absorbed by this portion. At the same time, a limit 1 switch is installed to issue a signal indicating that the manipulator claws 50a and 50b have moved forward and have come to the 1 position where they can grip the barrel tank. As mentioned above, if the number of processing tanks provided in one processing machine is an even number and they are arranged at the same angular intervals, the manipulators can be arranged on the same straight line as the diameter of the turret 45, as shown in FIG. The loader conveyor and unloader conveyor can also be arranged at right angles to the above diameter. The processing tank has the advantage of having a simple structure because it only needs to perform linear motion in the same direction as the manipulator axis.

The operation of the apparatus of the present invention will be explained based on the structure as described above. In principle, the apparatus of this invention operates fully automatically using a known sequence control system, but some operations may also be performed manually. That is, when the specified machining time ends, a current flows through the main motor via frequency impark due to the action of the timer, and the rotation is switched to a slow speed. In this case, the knock 3 for position regulation
0 moves forward and fits into the recesses of the two position regulating plates to stop at the fixed position. This fixed position stop is detected by a proximity switch (not shown) provided around the turret 4 or 5, and a signal No. 13 is sent to the control device. In response to this signal, pressurized fluid is introduced into the piston rod side of the hydraulic cylinder 20 at the processing tank take-out position (position A in Fig. 2), and the third
The processing tank saucer 28 shown in the figure is placed upside down, and the processing tanks 14a, 1
Release the tension in 4b. At the same time, the manipulator claws 50a and 50b on the unloader side move forward. At this time, the manipulator claws 50a and 50b are in an open state and are in a state of being lowered by the fluid pressure cylinder 41. Since pressurized fluid is introduced into the piston side of the fluid pressure cylinder 39, the manipulator claws 50a, 50b move forward. At the end of the forward movement, the impact is alleviated by the gentle WI devices 54a and 54b, and the forward movement is detected by the proximity switch 55 provided between them. By the signal output from the proximity switch 55,
Pressurized fluid is introduced into the piston rod 61 side of the fluid pressure cylinder 53, the manipulator claws 50a and 50b are closed to hold the processing tank, and the piston rod 4 of the fluid pressure cylinder 41 is closed.
2 to raise the manipulator claws 5Oa and 50b,
Pressurized fluid is introduced into the piston rod 61 side of the fluid pressure cylinder 39 to move the processing tank to the position of the unloader conveyor 57. At this position, the manipulator claws 50a, 50
The grip shown in b is released, the processing tank is lowered onto the unloader conveyor 57, and the processing tank is sent to the next step (reversing the processing tank). Next, the turret 4.5 is rotated by 360 degrees/S (S is the number of main shafts of the processing tank), and the same operation as above is performed to leave the processing tank. S/2-time processing tank it! When performing It IR, from next time onwards, the machining tank containing the workpiece in the machining corner will be on the unloader side, and the machining tank saucer without a machining tank will be on the loader side, so the weight will be placed in the machining tank in the same way as the previous operation. leave,
The latter is loaded with a processing tank containing unprocessed workpieces. The processing (a) that accommodates this unprocessed workpiece takes the opposite process to the removal of the 7Jl processing tank, and is self-explanatory, so the description will be omitted. In this way, If!it Ili of the processing tank is When this is done, the machining tank containing the finished workpiece disappears and the machining tank containing the unprocessed workpiece becomes set S/2, so from now on, the processing tank containing the unprocessed workpiece will be loaded S/2. In this way, when the machining tank containing the unprocessed workpieces is reached, the main motor is rotated at high speed, the process begins, and the operations described above are repeated.The flowchart of these operations is shown in It is shown in Figure 7.

(Effects of the Invention) As described above, according to the present invention, a centrifugal fluid barrel processing machine has a processing tank configured to be detachable, a conveyor is provided on both sides of the processing machine, and a processing machine that accommodates a workpiece in a processing corner is provided. Since a manipulator is provided for transporting the tank from the processing machine to the unloader conveyor and the processing tank containing unprocessed workpieces from the loader conveyor to the pre-processing stage, the contents of the processing tank can be exchanged externally. Therefore, it is extremely effective in eliminating wasted time for exchanging contents and making complete automation possible.

[Brief explanation of drawings]

Fig. 1 is an overall front view of the actual tS device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged detailed cross-sectional view showing the tightening structure of the processing tank, and Fig. 4 is the manipulator. Fig. 5 is a partially enlarged detailed cross-sectional view of the manipulator, Fig. 6 is an enlarged plan view of the manipulator, and Fig. 7 is a diagram showing the fully automated state of the machine. This is a flowchart. 1... Bridge groove 2... Center shaft 3... Outer shaft 4... Upper turret 5... Lower turret 6... Main motor 7... Main sub-block]
~Wheels 9a, 9b...Chain wheels 10a, 10b, 10c...Machining tank main shafts 11a, 1
1b, 11c...tank driving chain wheels 14a, 14b, 14c, 14d, 14e114f, 1
4Q, 14h, 14k, 141... Processing tank 15a, 15b, 15c... Processing tank clamp device 17
...Hollow shaft 18...Two central shafts of processing tank...Position regulation plate 30...Knock for position regulation 3
2... Conveyance roller 33... Stop device 36a,
36b...Guide shafts 37a, 37b...Slider 38...Machine base 44...Manipulator mounting bases 45a, 45b...Branch offices 47a, 47b...Dogs 48a, 48b... Proximity switches 49a, 49b...manipulator mounting flange 50a
, 50b... Manipulator claw 55... Proximity switch 56... Loader conveyor 57... Unloader conveyor

Claims (1)

[Scope of Claims] 1. A machining tank charged with a workpiece and media is rotatably installed between two turrets, and the turret is rotated at high speed to impart orbital motion and rotational motion to the machining tank. In a centrifugal flow barrel processing machine for processing a workpiece housed inside a processing tank, a processing tank saucer is fixed on the main axis of the processing tank that rotates the processing tank, the processing tank is mounted on the processing tank saucer, and the processing tank is mounted on the processing tank saucer, and the processing tank is mounted on the processing tank saucer, and A processing tank tensioning device is attached to the turret, an unloader conveyor and a loader conveyor are installed on both sides of the processing machine, and the processing tank is transported from the processing machine to the unloader conveyor, or from the loader conveyor to the processing machine. Fully automatic centrifugal flow barrel processing machine 2 characterized by being equipped with a manipulator for conveying the tank.The tensioning device of the processing tank has a double shaft at the bottom, rotatably supported by a hollow shaft, and the center axis of the processing tank is It is slidably inserted into the inside of the hollow shaft, and a hydraulic cylinder for lifting and lowering is provided at the upper part, and the lower end of the piston rod is configured in a box shape, and is rotatable between it and the tip of the central shaft of the processing tank. The fully automatic centrifugal fluid barrel processing machine 3 according to claim 1, wherein the box-shaped portion at the lower end of the piston rod is prevented from rotating from the outside and is configured to be movable up and down. The fully automatic centrifugal flow barrel processing machine 4 according to claim 1, wherein two manipulators are installed on both sides of the turret diameter. The media charged into the processing tank is dry barrel processing media. Fully automatic centrifugal flow barrel processing machine according to claim 1