KR950012388B1 - Index-feed machining system - Google Patents

Abstract

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Description

Sequential Feed Processing Equipment

1 is a perspective view of a main portion showing an example of a sequential transfer processing device that is a premise of the present invention.

2A and 2B are a plan view and a sectional view, respectively, illustrating a processing state of a workpiece.

Figure 3 is a front view of the main portion showing a first embodiment of the present invention.

4 is a sectional side view showing the main portion of a second embodiment of the present invention;

5 is an explanatory view of principal parts showing a third embodiment of the present invention;

6 is a sectional view showing the principal part cross-sectional structure of a fourth embodiment of the present invention.

FIG. 7 is a hydraulic circuit diagram in the fourth embodiment shown in FIG.

8 and 9 are enlarged cross-sectional views of a main portion showing a modification of the hydraulic cylinder 306 in FIG. 6, respectively.

* Explanation of symbols for main parts of the drawings

3: pilot hole 23: high pressure pump

101: main body 103: groove

104: movement adjusting device 107: position measuring device

108: cassette 111: clamp screw

306: hydraulic cylinder 312: punch

[Background of invention]

In the present invention, for example, when processing such as punching, drawing, drawing, or the like on a workpiece, each process is performed in a set of apparatuses, and the workpiece is pitch-feeded to the next step in order to perform the machining. It further relates to a sequential transfer processing device for completing the processing in the final process.

[Private Technology]

Conventionally, when a sheet metal product of a predetermined shape is produced by punching, drawing, compression, or the like on a plate made of a structural material such as steel sheet, it is common to pass through various processes. In the case where the production quantity of such sheet metal products is large, each process or stage is processed one by one in a mold for processing, and the workpiece is sequentially sent to the next stage to proceed further processing, and the means for completing the processing at the final stage. Is adopted. Such a processing die is called a sequential transfer type, and for example, since one sheet metal product can be obtained for every stamp of a press, there is an advantage of being extremely high efficiency.

In the above-mentioned conventional sequential transfer processing dies, the production speed is high, the delivery time from the processing of the workpiece to the completion of processing is short, and there is little work to be done in the middle of the process during press work, and a large number of people use it. While producing has the advantage of being possible, there are the following problems. In other words, the structure in which a plurality of pairs of punch dies are incorporated into one mold makes the mold structure extremely complicated, requires a high-precision mold manufacturing technique, increases the production period, and increases the manufacturing cost.

In addition, it is necessary to dismantle the whole mold even for partial breakage, repair, and adjustment of the mold, and these operations are complicated, which requires a lot of time and process number. In addition, in the production of small quantities of multi-products, when the shape of the workpiece and the dimensions are slightly different, if a dedicated mold is produced every time, if the mold cost is high, the demand for the FMS production method is increasing. There is no problem.

In order to solve such a problem, the present applicant has already filed a sequential transfer processing apparatus which is simple in structure and can easily perform partial adjustments and the like (for example, Japanese Patent Application No. Hei 2-121760, 2-121761). The present invention is further improved on the premise of these improved inventions.

1 is a perspective view showing the main parts of an example of a sequential transfer processing device which is a premise of the present invention. In Fig. 1, reference numerals 100, 200, 300, 400, and 500 are processing units, respectively, and are arranged on the base 1 at intervals of, for example, 2P (P is the feed pitch of the workpiece) in the conveying direction of the workpiece (not shown). Although these processing units 100-500 are each provided with a pair of punches and dies corresponding to a some process, the structure is demonstrated to the processing unit 100 as an example. Reference numeral 101 is a main body, formed in a substantially U-shape, and integrally provided with a dovetail 102 having a dove tail shape at a lower end thereof, and engaging with a groove 103 installed in the base 1. The movement can be adjusted in the conveying direction of the workpiece, and also formed so as not to move in the direction perpendicular to the conveying direction of the workpiece. Reference numeral 104 denotes a movement adjusting device, and reference numeral 105 denotes a clamping device. Reference numeral 106 denotes a hydraulic cylinder and is provided at the upper end of the main body 101. Reference numeral 107 denotes a position measuring device and is provided at the side end of the hydraulic cylinder 106.

Next, reference numeral 108 is a cassette, which is formed in a substantially U shape and is provided with a punch or die (not shown) on the upper side to enable vertical movement, and at the same time, a die or punch paired with the punch or die ( (Not shown in the drawing), and is detachably installed in the main body 101. The positioning of the cassette 108 is performed by engaging with the positioning members 309 and 310 as shown in the machining unit 300. Reference numeral 111 is a clamp screw. In other words, by mounting the cassette 108 to the main body 101 via a positioning member (not shown in the processing unit 300, refer to 309 and 310), predetermined positioning can be performed and clamp screw It is configured to fix the position by tightening the 111. After fixing the cassette 108, the operating rod (not shown) of the hydraulic cylinder 106 is connected to the punch or die which is installed to move upward and downward. .

FIG. 2A and FIG. 2B are respectively explanatory parts showing the processing state of the workpiece, FIG. 2A shows the plane, FIG. 2B shows the cross section, and the same parts denote the same reference numerals as the first view. In FIG. 2A and FIG. 2B, the code | symbol 2 is a to-be-processed material, and it pitch feeds intermittently by the difference P in the arrow direction. That is, in FIG. 1, the gap between the pair of punches and the dies provided in the cassette 108 (the same applies to other cassettes) is pitch-feeded. In FIGS. 1 to 2b, the processing units 100 to 500 are formed so as to correspond to the machining process of the pilot hole 3, the machining process of the arc-shaped groove 4, and the first to third drawing machining processes, respectively. Doing.

First, the machining unit 100 includes a punch and a die for drilling the pilot hole 3 and a guide for engaging the pilot hole 3 at the position of the downstream side P in the conveying direction of the workpiece 2 (not shown). Well) is provided. Therefore, each time the machining unit 100 is operated, the pilot holes 3 are sequentially drilled and the guides are engaged with the drill holes 3 drilled at the same time, thereby preventing unwanted displacement of the workpiece 2 and precision. Can be maintained.

In the next processing unit 220, the arc-shaped groove 4 is processed. However, in the machining unit 300, the first drawing is performed, and a cup-shaped protrusion 5 is formed in the workpiece 2, and the arc-shaped groove 4 widens its width to form an arc-shaped groove 6. To change. In addition, in the machining unit 400, the second drawing processing and the processing of the flange hole 7 are performed, and the height of the projection 5 increases. In the processing unit 500, 3rd drawing process is performed and the height of the processus | protrusion 5 is formed in predetermined dimension. Thereafter, although not shown, edge cutting and other processing can be performed to obtain a cup-shaped sheet metal product. As a matter of course, positioning is performed to secure the predetermined precision by providing the guides engaged with the pilot holes 3 in the processing units 200 to 500.

According to the sequential transfer processing device of the above configuration, compared with the conventional sequential mold, the structure is simple and easy to manufacture, and has the advantage that can be processed in high efficiency even in the production of small quantities of various types, there are the following problems. .

In other words, since the hydraulic cylinders 106 are provided in the plurality of processing units as shown in FIG. 1, they can be operated independently and at the same time standardization and compatibility of the common parts are provided. If greater driving forces or operating loads are required than other machining units, a special hydraulic cylinder must be fitted to the machining unit. Therefore, there is a problem that the manufacturing cost is not only high, but also difficult to balance with other hydraulic cylinders.

On the other hand, it is conceivable to reduce the driving force or the operating load by dividing the machining process into a plurality of processes, but when such a means increases the machining process, it is necessary to newly incorporate machining units corresponding to them. Not only does it cause a problem, but the whole device becomes huge.

Next, the processing units 100 to 500 shown in FIG. 1 are driven by hydraulic cylinders 106, respectively. However, in this type of hydraulic cylinder, the stroke of the piston or plunger for operating the actuating rod is conventionally used for each processing unit. It is common to be comprised similarly. In other words, in the punching or punching of the workpiece, although the stroke of the punch is sufficient to be slightly larger than the plate thickness dimension of the workpiece, the processing unit corresponding to processing of other processing units, for example, bending, drawing, etc. The same stroke as the processing means was used. Therefore, the use amount of the operating flow rate as a whole apparatus becomes large and there is a problem that a large capacity hydraulic pump is inevitably required.

It is also usual to operate the pressure of the hydraulic oil at the same pressure, for example, a high pressure such as 140 Kg / cm 2. However, it is necessary to operate the hydraulic fluid at high pressure in the processing of the workpiece, bending and drawing. Only when punching or punching is performed, it is not necessary to operate the hydraulic oil in these processing means at high pressure while approaching or isolating the punch or die workpiece. On the other hand, in the hydraulic cylinder, a large amount of energy is required to make a high pressure hydraulic fluid. In the conventional one, it is always necessary to use a high pressure hydraulic oil, and furthermore, since the hydraulic cylinder with a larger stroke is used than necessary as described above, there is a problem that the operating flow rate is large and the energy consumption as a whole is large.

[Summary of invention]

It is a first object of the present invention to provide a sequential feed processing device having a configuration which can selectively increase the driving force or operating load of a specific processing unit.

A second object of the present invention is to provide a sequential feed processing apparatus capable of reducing the energy consumption while controlling the stroke of the processing means corresponding to the machining process.

EXAMPLE

3 is a front view of the main portion showing the first embodiment of the present invention, and the same parts are denoted by the same reference numerals as those in FIGS. 1, 2a, and 2b. In FIG. 3, three processing units of the same configuration are provided adjacent to the base 1, and these are denoted by reference numerals 300a, 300b, and 300c. In FIG. 3, the main body 301 of the processing unit mounts through the groove | channel (not shown in any figure) provided in the base 1. As shown in FIG. The cassette 308 is provided with a punch 31 formed so as to be movable up and down and a die 313 paired with the punch 312 and detachably attached to the main body 301. Reference numeral 306 denotes a hydraulic cylinder, reference numeral 307 denotes a position measuring device, and is provided at the upper end of the main body 301. Furthermore, in FIG. 3, only the central processing unit 300b is configured to contribute to the processing. Therefore, dies are not attached to the processing units 300a and 300c at the left and right ends. Reference numeral 314 is then a connecting member and cooperatively connects the operating rods 315 of the three hydraulic cylinders 306.

By the pitch-conveying the workpiece 2 in the direction of the arrow by the above configuration, as shown in Figs. 1, 2a and 2b, the feed unit can be sequentially processed and the machining unit shown in Fig. 3 In 300b, larger driving force can be obtained in another processing unit. In other words, if the normal driving force is W, the driving force of 3W can be obtained in the machining unit 300b. Generally, when the hydraulic cylinders of n machining units are connected by the connection member 314, and the movable punches (which may be movable) in s machining units are driven, the driving force of each movable punch is nW / s times. can do.

4 is a cross-sectional side view showing main parts of a second embodiment of the present invention, and the same parts are denoted by the same reference numerals as those in FIGS. In FIG. 4, the main body 301 is attached to the groove 303 provided in the base 1 via the dovetail 302, and is fixed as the clamp screw 311. As shown in FIG. Next, the hydraulic cylinder 306 is formed by connecting the first cylinder 306a and the second cylinder 306b in series, and opens each piston 316a, 316b. The piston rod 317a is connected to the punch 312 and at the same time the piston rod 317b is directed into the first cylinder 306 and is also in contact with and detachable from the piston 316a. The cylinder 306a and the 2nd cylinder 306b are comprised so that hydraulic pressure may be applied simultaneously or separately through a control apparatus (not shown).

In the case where the machining can be performed by the normal driving force by the above configuration, the hydraulic application to the second cylinder 306b is interrupted, and the punch 312 is operated only by the first cylinder 306a to perform the machining. When a large driving force is required, when the control device is operated to apply hydraulic pressure to the second cylinder 306b, the piston 316b is operated, the piston rod 317b abuts on the piston 316a, and cooperates with the punch 312. ) Can be activated. In general, when n cylinders having the same driving force are connected in series and selectively operated s cylinders near the punch 312, when the driving force of each cylinder is W, a driving force of sW can be obtained. The selection range can be W-nW.

In the present embodiment, an example of the drilling process has been described, but the same applies to the drawing process, the bending process, and the compression process. Moreover, although the example which used the hydraulic cylinder as a drive means was demonstrated, it may be a fluid pressure cylinder containing air, water, etc. Moreover, drive means other than a fluid pressure cylinder may also be used. Moreover, the arrangement | positioning space of a movable unit can generally be mP (m is a positive integer +), and you may change an arrangement | positioning interval as needed.

FIG. 5 is an explanatory view illustrating main parts of a third embodiment of the present invention, and the same parts are denoted by the same reference numerals as those of FIGS. 1, 2a, and 2b. In FIG. 5, the machining units 200, 300, and 400 correspond to the grooving process, the first drawing process, and the second drawing process in FIGS. 1 and 2a, respectively, and the spacing of mP on the base 1 is shown. To place. The processing units 200 to 300 have almost the same configuration, and the processing unit 200 will be described as an example in the same manner as in FIGS. 1 and 2A.

The main body 201 is detachably provided with a cassette 208 including a punch 212 and a die 213. Reference numeral 206 is a hydraulic cylinder and is installed at the upper end of the main body 201 and connects the rod 212 of the piston (not shown) with the pinch 212. Reference numeral 207 is a position detecting device and is provided for detecting the position of the piston in the hydraulic cylinder 206, that is, the position of the punch 212.

Next, reference numeral 20 denotes a hydraulic unit, and includes a low pressure pump 22 and a high pressure pump 23 driven by a motor 21, and the hydraulic cylinder ( 206) to supply the working oil. Furthermore, the low pressure pump 22 and the high pressure pump 23 are formed in a variable capacity type. Numeral 25 denotes a high pressure hydraulic circuit, retrofits an accumulator 30, and checks the check valve 26 and the switching valves 27 and 28 between the high pressure pump 23 and the hydraulic cylinder 206. Connected by media. Next, reference numeral 29 denotes a low pressure hydraulic circuit, and the check valves 31 and 32 and the switching valve 28 are connected between the low pressure pump 22 and the hydraulic cylinder 206. Reference numeral 33 is a return circuit and connects between the selector valve 28 and the oil tank 34. Furthermore, the switching valves 27 and 28 operate in response to the top dead center and the bottom dead center of the piston (not shown) in the hydraulic cylinder 206, that is, the upper and lower points of the punch 212. Is connected to a control device (not shown) that operates in accordance with the signal at " The other processing units 300 and 400 are formed similarly to the above.

The above-described operation will be described next. In FIG. 5, the punch 212 is in the position of the top point and shows the state before processing. When the hydraulic unit 20 is operated, the hydraulic oil in the low pressure pump 22 and the high pressure pump 23 is supplied into the low pressure hydraulic circuit 29 and the high pressure hydraulic circuit 25, respectively. Furthermore, the switching valve 27 is moved to the left side, and the hydraulic oil in the high pressure hydraulic circuit 25 is said to be in the standby state. Therefore, the hydraulic oil in the low pressure hydraulic circuit 29 is supplied to the upper portion of the hydraulic cylinder 206 through the switching valve 28 and the punch 212 is driven by the operation of the piston (not shown) to the surface of the workpiece 2. Close to In this state, the switching valve 27 moves to the right through a control device (not shown) in accordance with the signal from the position detection device 207, and the state shown in FIG. This allows the working hydraulic pressure in the high pressure hydraulic circuit 25 to be supplied to the upper portion of the hydraulic cylinder 206 through the switching valves 27 and 28 and to the workpiece 2 by the punch 212 and the die 213. Grooving is performed. In this case, the high pressure hydraulic fluid is not supplied into the low pressure hydraulic circuit 29 due to the presence of the check valve 32.

Next, when the punch 212 reaches the lower end point, the switching valve 27 moves to the left and the switching valve 28 moves to the right via the control device by a signal from the position detecting device 207. Therefore, the supply of hydraulic oil in the high pressure hydraulic circuit 25 to the hydraulic cylinder 206 is cut off, and at the same time, the hydraulic oil in the low pressure hydraulic circuit 29 is supplied to the lower portion of the hydraulic cylinder 206 via the switching valve 28 and the punch 212. Rises and stops at the upper end with a stopper (not shown). In this way, after the processing in the other processing units 300 and 400 is completed and each processing means reaches the upper end point, the workpiece 2 is pitch-feeded to the left and the next processing is repeatedly performed.

In the present embodiment, an example in which a hydraulic cylinder is used as the driving means of the processing unit has been described. In general, of course, other fluids such as air and water may be used as the pressure medium. Moreover, as a position detection apparatus, other well-known position detection apparatus can be applied besides electric. Moreover, although the example which used the switching valve as a control means of a hydraulic circuit was shown, a flow control valve can also be used.

FIG. 6 is an explanatory view of the configuration of the main part cross-section showing the fourth embodiment of the present invention, and the same parts are denoted by the same reference numerals as those in FIGS. 1, 2a and 2b. In FIG. 6, the main body 301 of the processing unit 300b is mounted with the dovetail 302 in the groove 303 provided in the base 1 by a clamp device (not shown). Fix it. The cassette 308 is provided with a punch 312 formed so as to be movable up and down and a die 313 paired with the punch 312 and detachably attached to the main body 301. Reference numeral 306 denotes a hydraulic cylinder, reference numeral 307 denotes a position measuring device, and is provided at the upper end of the main body 301.

Next, the hydraulic cylinder 306 is configured by connecting the first cylinder 306a which forms the rear end and the second cylinder 306b which forms the front end in series, and opens the pistons 316a and 316b, respectively. The piston rod 317a connects with the punch 312 and simultaneously forms the piston rod 317b into the first cylinder 306a. In addition, the first cylinder 306a and the second cylinder 306b have hydraulic pressure simultaneously or separately through the pipes 314a, 314b, 315a, and 315b having the flow control valve 318 and the switching valve 319 installed, respectively. Configure it to apply. In this case, the pipe 314a is formed to introduce the fluid into the first cylinder 306a through the hole provided in the piston rod 317b. Reference numeral 320 is a pressure sensor that detects the oil pressure in the first cylinder 306a. Reference numeral 321 denotes a control device, and is configured to control the flow rate control valve 318 and the switching valve 319 by signals from the position measuring device 307 and the pressure sensor 320 or either.

7 is a hydraulic circuit diagram according to an embodiment of the present invention, and the same parts are denoted by the same reference numerals as those in FIG. In FIG. 7, the example which implemented the hydraulic cylinder 306 of the same structure by three sets is shown. However, the stroke of the piston rod 317a317b can be set differently. In FIG. 7, reference numeral 40 denotes an operation control device, and three control devices 321 are connected to each other in a controllable manner. Next, reference numeral 41 is a variable displacement hydraulic pump, and is driven by the motor 42. The hydraulic oil is supplied from the oil tank 43 to the hydraulic cylinder 306 via the flow control valve 318 and the switching valve 319 via the hydraulic pipe 44. Reference numeral 45 denotes a return pipe.

Next, the above-described configuration will be described with reference to FIGS. 6 and 7. When the hydraulic pump 41 is operated via the motor 42, the hydraulic oil is supplied from the hydraulic pipe 44 to the hydraulic cylinder 306. Furthermore, the switching valve 319 is in the home position, and the flow control valve 318 is in the closed state. Therefore, the hydraulic oil in the hydraulic pipe 44 passes through the switching valve 319 and is supplied from the hole of the pipe 314a and the piston rod 317b to the upper portion of the first cylinder 306a, and the piston 316a is lowered and the piston rod Drawing processing is performed on the workpiece by the punch 312 connected to 317a, as shown in the second.

Next, when a larger driving force is required in the final step of the drawing machining process, that is, when the piston 316a and the piston rod 317a in the first cylinder 306a reach a predetermined position, the position measuring device ( The flow control valve 318 is opened by the detection signal of 307 via the control apparatus 321, and the hydraulic fluid in the hydraulic piping 44 is supplied from the piping 315a to the 2nd cylinder 306b. Accordingly, the piston rod 317b connected to the piston 316b enters into the first cylinder 306a.

On the other hand, the hole of the pipe 314a is closed by the lowering of the piston rod 317b, and the upper hydraulic oil of the first cylinder 306a is closed. Accordingly, the piston rod 317b may enter the first cylinder 306a to increase the hydraulic oil pressure in the first cylinder 306a and exert a large pressing force on the piston rod 317a. That is, when the piston 316a and the piston rod 317b have the cross sectional areas A ₁ and A ₂ , respectively, the piston rod 317B enters the first cylinder 306a and the hydraulic oil pressure in the first cylinder 306a is changed to A _1. / A will be increased in _two times. Therefore, for example, when the hydraulic oil pressure in the hydraulic pipe 24 is 140kg / cm ² , A ₁ / A ₂ = 3, the hydraulic oil pressure in the first cylinder 306a may be increased to 420kg / cm ² .

Furthermore, when the piston 316a descends in the above state, the volume in the first cylinder 306a increases. Therefore, when the piston rod 317b enters the first cylinder 306a by the amount corresponding to the increased volume therein, the pressure decreases. For this reason, the pressure in the first cylinder 306a is detected by the pressure sensor 320, the signal is pressed by the control device 321, and the flow rate is flowed into the second cylinder 306b via the flow control valve 318. It is configured to supplement. Furthermore, if the above flow rate cannot be supplemented even by the single entry of the piston rod 317b, the flow rate control valve 318 is operated in the reverse position via the control device 321 and the piston 316b is raised. By this, the operation oil is introduced into the first cylinder 306a through the holes of the pipe 314a and the piston rod 317b, and the piston rod 317b is again entered. In this way, the pressure sensor 320 is controlled so that the pressure in the first cylinder 306a maintains a predetermined value.

Next, when the punch 312 shown in FIG. 6 reaches the lower end point, the flow control valve 318 is reversed by the signal from the position measuring device 307 via the control device 321, and the pipe ( At the same time that the hydraulic oil supply at 315a is cut off, the upper hydraulic oil of the second cylinder 306b is returned to the oil tank 43 from the return pipe 45 shown in FIG. 7 via the flow control valve 310. At the same time, since the hydraulic oil is supplied to the lower side of the second cylinder 306b from the pipe 315b, the piston 316b and the piston rod 317b are raised to stop at the upper end point. In this case, the upper hydraulic oil of the first cylinder 306a is in a sealed state until the hole provided in the piston rod 317b is directed to the hole of the pipe 314a, and the pressure gradually decreases as the piston rod 317b rises. When the piston rod 317b reaches the upper end point, it returns to the initial pressure. Simultaneously with this, the switching valve 319 is reversed via the control device 321, and the upper hydraulic oil of the first cylinder 306a passes through the pipe 314a and the oil tank in the return pipe 45 shown in FIG. The hydraulic oil is supplied to the lower side of the first cylinder 306a through the pipe 314b while returning to the inside of 43. Thus, the piston 316a shown in FIG. 6 rises and stops at each of the upper end points. In this way, after the machining is completed in another machining unit and each machining means reaches the upper end point, the workpiece 2 is pitch-shifted to the left in FIGS. 2a and 2b, and the next machining is repeatedly performed. .

8 and 9 are enlarged longitudinal sectional views of the main portion showing a modification of the hydraulic cylinder 306 shown in FIG. 6, respectively, and the same parts are denoted by the same reference numerals as those in FIG. First, as shown in FIG. 8, when the piston rod 317b is located approximately at the upper end, the hydraulic oil is formed to be introduced into the first cylinder 306a in the pipe 314a. As the piston rod 317b descends, the hole of the pipe 314a is closed. Therefore, when the piston rod 317b enters into the first cylinder 306a, the first cylinder 306a can increase the hydraulic oil pressure.

In FIG. 9, the hole of the piping 314a is provided in the upper part of the 1st cylinder 306a, and the check valve 319a is retrofitted to the piping 314a. With the above configuration, the hydraulic oil supplied to the first cylinder 306a is closed by the lowering of the piston rod 317b, and the pressure of the hydraulic oil can be increased as shown in FIG.

In the present embodiment, an example in which a hydraulic cylinder is used as the driving means of the processing unit has been described. In general, of course, other fluids such as air and water may be used as the pressure medium. Moreover, although the example which demonstrated the hydraulic cylinder by the two stage structure was demonstrated, you may have a three or more stage multistage structure by the magnitude | size of the driving force calculated | required by a drive means. In general, in the case of using an n-stage hydraulic pressure cylinder, the operating portion of the piston member mounted on the (n-1) -stage hydraulic pressure cylinder may be formed so as to enter the n-th stage hydraulic pressure cylinder of the rear stage.

Furthermore, instead of the hydraulic cylinder at the foremost stage, the operating portion may be driven by an electromagnet or other mechanical means. Moreover, other well-known position detection apparatus can be applied as an electronic position detection apparatus. Moreover, although the example which used the switching valve as a control means of a hydraulic circuit was shown, a flow control valve can be used.

Since the present invention has the configuration and operation as described above, the following effects can be obtained.

(1) By using the drive means of substantially the same capacity, the energy balance of the whole apparatus can be maintained satisfactorily, and the drive force of an arbitrary processing unit can be selectively increased.

(2) Since it is not necessary to use a driving means for a particular use, the production cost can be reduced and processing can be performed by the driving means having a minimum required capacity, so that the use efficiency of energy is high.

(3) It is possible to selectively apply high pressure fluid pressure and low pressure fluid pressure to the fluid pressure cylinder, to use the low pressure fluid pressure to move the processing means, and to use the high pressure fluid pressure only during processing, so Can reduce the energy consumption.

(4) Since the operating position of the hydraulic cylinder is controlled for each processing unit, the total amount of the working oil can be reduced and the time required for processing can be shortened.

(5) Positioning of upper point, operation point and lower point. In addition, the change point of the hydraulic fluid can be controlled, for example, only a predetermined section can be switched to low pressure or high pressure, and extremely efficient processing can be performed.

(6) By using the flow control valve for the control of the fluid circuit, the force, the direction, and the like can be freely controlled, that is, the NC can be processed by the digital control of the flow rate.

(7) Since the multistage cylinder is operated only when a large driving force is required in processing, there is no need to prepare high pressure hydraulic fluid, and energy consumption can be reduced.

Claims (3)

The cassettes 208 and 308 having a plurality of types of processing means are mounted in such a manner that a plurality of restoration units 200, 300, and 400 are detachably installed in the main bodies 201 and 301 in correspondence with a plurality of processing steps, and mP (m) in the conveying direction of the workpiece 2. Is an arbitrary positive integer, P is a pitch of the workpiece, and the sequential transfer is configured so that the plurality of machining steps are sequentially performed by a plurality of machining units for pitch transfer of the workpiece. In the processing apparatus, independent driving means (206, 306) are provided in the plurality of processing units (200, 300, 400), respectively, and a plurality of driving means (306a, 306b) provided in the processing unit in series and their movable members ( Sequential transfer characterized in that the 316a and 317a, 316b and 317b are detachably connected to each other, and the drive means 306a closer to the punch 312 or the die 313 is selectively driven. Ball unit. The plurality of processing units 200, 300 and 400, in which cassettes 208 and 308 having a plurality of types of processing means are detachably installed in the main bodies 201 and 301, correspond to a plurality of processing steps, and mP (m) in the conveying direction of the workpiece 2 Is an arbitrary positive integer, P is a pitch of the workpiece, and the sequential transfer is configured so that the plurality of machining steps are sequentially performed by a plurality of machining units for pitch transfer of the workpiece. In the processing apparatus, the independent driving means 206 and 306 are provided in the plurality of processing units 200, 300 and 400, respectively, and the driving means 206 provided in the processing unit is formed as a hydraulic pressure cylinder. The fluid circuits 25 and 29 are connected so that the high pressure fluid pressure and the low pressure fluid pressure can be selectively applied, and the high pressure fluid pressure is applied to the fluid pressure cylinder only when the workpiece is processed. Sequentially transfer machining apparatus, characterized by. A plurality of processing units 200, 300 and 400, in which cassettes 208 and 308 having a plurality of types of processing means are detachably installed in the main bodies 201 and 301, correspond to a plurality of processing steps, and mP (m) in the conveying direction of the workpiece 2 Is an arbitrary positive integer, P is a pitch of the workpiece, and the sequential transfer is configured so that the plurality of machining steps are sequentially performed by a plurality of machining units for pitch transfer of the workpiece. In the processing apparatus, the drive means consisting of a plurality of stages of hydraulic cylinders (306a, 306b) which are connected to the processing unit in series while providing independent driving means (206, 306) in the plurality of processing units (200, 300, 400), respectively ( At the same time as the 306 is provided, the actuating portion 317b of the piston member, which is mounted on the hydrostatic cylinder 306b at the front end, is formed to be able to enter into the hydrostatic cylinder 306 at the rear end, and the actuating portion 317b is provided. After The supply fluid is closed by entering into the fluid pressure cylinder 306a of the cylinder, and the fluid pressure at the front end when the piston members 316a and 317a mounted in the last fluid pressure cylinder 306a reach a predetermined position. And a fluid circuit (315a and 315b) so as to be able to apply a predetermined fluid pressure to the cylinder (306b), so as to increase the driving force of the driving means.