JP2000210821A - Manufacture of flat parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method with high productive efficiency and good finishing, which is suitable for assembling to a continuous production line and solves problems on conventional barrel processing. SOLUTION: In a flat parts manufacturing method, a flat part P is obtained through the following processes to be carried out one by one while supplying a belt material 10 continuously: (a) a cutting process to cut and process a cut part to be an inner shape of a flat part on a belt material 10 by a feeding press machine 20 or a laser processing nozzle 30 and the like. (b) a finishing process to mend failures caused around the cut part in the cutting process by a deburring device 40 and the like. and (c) a cutting out process to cut out the belt material 10 for each individual flat part P by a cut out blade 8 and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a plate-shaped part, and more particularly, to cutting a thin metal plate into various parts by pressing or the like to form a plate-shaped part constituting various mechanical devices. It relates to a method of manufacturing.

[0002]

2. Description of the Related Art It is a widely used general-purpose technique to manufacture various device parts by pressing a thin metal plate or the like. For example, a valve lead constituting an intake valve of a reciprocating compressor is formed by forming a mounting hole for inserting a bolt through a thin plate such as a stainless steel plate by press working, or a lead having a complicated curved outer shape by laser processing, that is, a valve body. It is manufactured by cutting and forming pieces. In the machining of such a plate-like component, a defect called a burr or a return is inevitably generated at the periphery of the cut portion after the machining. In the case of laser processing, a part of the material melted by heat remains fixed around the processing location, resulting in a defect called laser dross. These defects are not preferable because they impair the use function of the plate-shaped part or the assemblability with other parts. Therefore, after working such as press working, a work for removing or correcting the above-mentioned defect, that is, a finishing work called so-called deburring is performed. 2. Description of the Related Art Conventionally, there is a barrel process as a finishing operation performed after a press process or the like. In barrel processing, a large number of plate-shaped parts that have been subjected to press processing and laser processing are housed in a processing tank together with granular abrasives and polishing liquid, and the processing tank is violently rotated or vibrated to produce abrasive materials. By such an action, fine protrusion-like defects such as burrs and laser dross are scraped off. Barrel processing is widely used as an efficient and economical method in that a large number of plate-like parts can be processed collectively at one time.

[0003]

However, conventional barrel processing involves automation of a production line, small-lot production of many kinds,
There was a problem with quick response to design changes.

[0004] That is, in the usual press working and the like, continuous operation is performed also from the viewpoint of efficient operation of the apparatus, and the processed plate-like parts are continuously sent out. However,
Due to the efficiency of the barrel processing, processing starts after the number of plate-like parts has accumulated to some extent, and once processing starts, the pressed plate-like parts are moved to another place for a certain period of time until the end of processing. Need to be stored. Usually, a plate-shaped component processed by a press machine is housed in a transport container such as a basket, and the operator transports the transport container to a barrel processing device and supplies it to a barrel processing tank. The necessity of such manual work has been a major obstacle to automation of the entire production line.

[0005] In addition, when processing accuracy is required in barrel processing, processing is generally performed slowly over a long period of time, and therefore, the production lead time has been long. When there are a plurality of types of plate-shaped components having different shapes and dimensions in detail, if a plurality of types of plate-shaped components are simultaneously placed in the barrel processing tank, it is very troublesome to collect and sort by type after the barrel processing. If this sorting operation is performed manually, the automation of the production line is further impeded. When barrel processing is performed separately for each type of component, if the number of one type of plate-shaped component is small, the efficiency of barrel processing becomes very poor. When a design change of a plate-shaped component occurs, if a part before the design change and a part after the design change are simultaneously barrel-processed, sorting after the processing is troublesome. If barrel processing is performed after the number of parts after the design change has accumulated to a certain extent, it takes a long time to obtain a finished product whose design has been changed. Moreover, while the plate-shaped components collide with each other in the barrel processing tank, the residual stress is improved, and the occurrence of defects such as scratches and dents is not rare. In addition, as a deburring device,
There is also known a mechanism provided with a mechanism for rotating a wheel having an outer peripheral surface made of ceramic or the like against a surface of a plate-shaped component while pressing the wheel, or a mechanism for pressing a rotating brush against the plate-shaped component. In these apparatuses, deburring can be performed by supplying plate-like parts one by one, and it is easy to incorporate them into a continuous production line or an automation line. However, in these apparatuses, since it is necessary to send and remove the plate-like parts to and from the apparatus one by one, it takes time to transport and handle the plate-like parts. A complicated holding mechanism is required to securely hold the small plate-shaped component in opposition to the above-mentioned force of the ceramic wheel or the rotating brush. Insufficient holding of parts may result in poor machining finish or damage to parts. The problem to be solved by the present invention is to solve the problems of the conventional barrel processing in the production of the above-mentioned plate-like parts, suitable for incorporation into a continuous production line, high production efficiency, The finish is also to provide a good method.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to cut off a cut portion which becomes an internal shape of a plate-like component from a strip while continuously supplying the strip in the longitudinal direction. A cutting process for processing, a finishing process for repairing a defect generated around the cut portion in the cutting process, and a cutting process for cutting the band material into individual plate-shaped parts are arranged in series and sequentially processed. A plate-shaped part is obtained. By the above-mentioned means, it is possible to flow in a series without delaying from material supply to the next process unloading, obstructing the automation of the production line, prolonging the production lead time, Problems such as occurrence of defects can be solved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above-mentioned problems, the present invention is to cut out a cut portion which becomes an internal shape of a plate-like component from a strip while continuously supplying the strip in the longitudinal direction. A cutting process, a finishing process for repairing defects generated around the cut portion in the cutting process, and a cutting process for cutting the band material into individual plate-shaped parts are arranged in a series and processed sequentially to form a plate. Get the parts. Thereby, it is possible to flow in series without stopping the process from material supply to unloading of the next process. Further, the cutting step includes laser processing, and the finishing step includes laser dross removing processing using an elastic polishing wheel. Thereby, for the shape change of the plate-shaped part, there is no need to replace the die of the press machine,
Switching is easy. In addition, large burrs such as laser dross, which are difficult to remove by barrel processing, can be removed in a short time. Further, a valve lead for a reciprocating compressor having a plate-shaped component made of a thin metal plate, a valve element piece disposed at the center and separated from the periphery by a through groove, and a mounting through hole disposed on the outer periphery, The cutting step may include a press process for extracting the mounting through hole and a laser process for cutting the through groove. As a result, by pressing the common shape part against poor productivity due to the slow processing speed in laser processing,
The processing speed can be increased and the productivity can be increased.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a manufacturing process of a plate-like component, and FIG. 2 shows a block diagram of the manufacturing process. A plate-like component P shown in FIG. 3 is obtained. FIG. 3 shows the processing state until the plate-shaped component P is obtained in a stepwise manner. The plate-shaped part P is an intake valve part for a reciprocating compressor. A discharge hole or a suction hole is formed between a cylinder block and a cylinder head of the compressor, and a valve plate or a gasket made of a sintered alloy is formed. And a component called a valve lead interposed with a plurality of sheets. As shown in FIG. 3, a specific structure is made of a stainless steel sheet, has a substantially square shape, and has a valve element piece 12 separated from an outer peripheral part by a separation groove 11 in a central part. The valve element piece 12 is capable of swinging separately from the outer peripheral portion in a state where a part thereof is connected to the outer peripheral portion. A plurality of through holes 13 such as bolt holes through which mounting bolts are inserted and holes for positioning pins are arranged on the outer periphery of the valve lead P. The outer four corners have quadrant notches 14. By using a plurality of valve leads P having different shapes of the valve element pieces 12 in a stacked manner, the flow of a high-pressure fluid passing through the valve mechanism or the movement of the valve element pieces 12 is controlled so as to exhibit desired characteristics. be able to. Therefore, in the state of attachment to the compressor, no gap or displacement of the attachment position occurs between the plurality of valve leads P or between the valve lead P and another member such as a valve plate. It is required that the operation of each valve element piece 12 be performed smoothly. For this reason, it is necessary to reliably remove defects such as burrs generated during the shape processing of the valve element piece 12 and the through hole 13. The apparatus shown in FIG. 1 continuously supplies a strip 10 serving as a material of a valve lead P in a longitudinal direction thereof. The band member 10 is made of a hoop material or a coil material of a stainless steel sheet, and has the same width as the valve lead P. The strip may have a greater width than the plate-shaped part, and the side parts of the plate-shaped part may be cut out to form irregularities or curved side shapes. Further, the strip has a width corresponding to a plurality of rows of the plate-shaped components, and a plurality of rows of the plate-shaped components can be manufactured at the same time. Although not shown, the band material 10 wound in a coil shape is pulled out from one end, and travels in a certain direction by using a normal belt material conveyor mechanism. It is also possible to supply straight strips of a fixed size in a straight line. The strip material can be continuously supplied at the same speed as the respective processing steps included in the manufacturing process are performed, the speed can be changed in the middle, and the running and the running stop are intermittently performed. Can be repeated. In the traveling route of the band material 10, areas where various operations are sequentially performed are arranged from the upstream side to the downstream side. The progressive press 20 is disposed at the most upstream side. As shown in FIG. 3, the band material 10 processed by the progressive press 20 has through holes 1 at positions corresponding to the individual valve leads P.
3 and the notch 14 are stamped. The operation of the progressive press 20 is such that the press die is raised and lowered while holding the strip 10 at a fixed position, so that the traveling of the strip 10 intermittently runs and stops in accordance with the operation of the progressive press 20. Repeatedly.

Following the progressive press 20, a laser processing nozzle 30 is arranged above the passage of the strip 10.
The laser processing nozzle 30 is irradiated with laser light from the tip to melt and remove the band material 10. By controlling the movement path of the laser processing nozzle 30 according to a shape pattern stored in the control computer in advance, the separation groove 11 having a complicated curved shape as shown in FIG. 3 is processed.
As described above, the shape of the valve element piece 12 formed by the separation groove 11 may be different for each of the plurality of valve leads P constituting one compressor. Thus, the movement of the laser processing nozzle 30 is automatically controlled. Processing of the separation groove 11 by laser processing
A precise separation groove 11 having a small width can be manufactured, and a valve lead P having high quality performance can be manufactured.

[0010] The machining shape includes holes, grooves, notches, and the like according to the internal shape required for the plate-like part. Shapes such as a combination of figures such as circles and polygons, and complicated curved shapes are also available. included.

[0011] If the plate-shaped part is a part provided with one kind of internal shape of the pattern, the same internal shape may be repeatedly cut off from the band material, or a plate-shaped part provided with a plurality of kinds of patterns. , The pattern shape to be cut can be changed for each plate-shaped part.

The cutting includes various cutting processes such as press punching, punching, drilling, boring, and milling. There are also electric discharge machining and water jet machining. A plurality of these processes can be combined. In the press working, in addition to the cutting work such as punching, the uneven forming processing for forming the unevenness on the surface of the band material can be performed.

Following the laser processing nozzle 30, the strip 10
A deburring machine 40 is arranged below the passage route of.
Defects generated around the cut portion in the cut step include burrs and returns formed on the processed end surface. In the case of a process in which a material is heated and melted, such as laser processing, there is a so-called dross formed by fixing the melted material around a cutting location. The deburring machine 40 has an axial center disposed in a direction perpendicular to the strip 10 and is rotatable.
0, a laser dross removing wheel 42 whose outer peripheral surface is made of a ceramic material, a rotating brush 44 for deburring that has a tip abutting on the strip 10 and rotates horizontally in a plane parallel to the strip 10; A finishing wheel 46 having the same wheel structure as the removal wheel 42 and smoothing the surface of the strip 10 is provided. The rotary brush 44 for deburring also has a function of R chamfering for processing the edges of the separation groove 11 and the through hole 13 into a curved surface. In addition, water or water containing an abrasive is supplied to a processing location such as the laser dross removing wheel 42 to suppress generation of processing dust and improve processing efficiency. Therefore, the strip 10 that has passed through the deburring machine 40 completes the deburring process, the R chamfering process, and the laser dross removing process for the separation groove 11 and the through hole 13. Furthermore, it is possible to simultaneously remove fine scratches and dirt on the surface of the band material.

[0014] Dry honing, wet honing, dry blasting, buffing, lapping, and the like can also be employed. As a method suitable for removing the laser dross, the above-described processing method in which a ceramic wheel whose outer peripheral surface is made of ceramic is brought into contact with the surface of the strip while rotating is preferable. Instead of ceramic, a wheel whose outer peripheral surface is made of metal such as zinc is also used,
These processings are called elastic grinding wheel processing. By using a nylon brush containing abrasive grains that rotates in a plane parallel to the surface of the band material, the inner peripheral edge of the cut portion can be rounded into a small circular cross-sectional shape.
Moreover, the above-mentioned finishing processing can also combine a plurality of processing.

Following the deburring machine 40, a washing nozzle 50 is disposed below the passage of the strip 10. The cleaning nozzle 50 sprays cleaning water on the band material 10 to wash and remove processing powder and the like attached to the band material 10 in the processing up to that time.

Following the washing nozzle 50, a draining nozzle 60 is arranged below the passage of the band material 10. The water adhering to the strip 10 is wiped off by bringing the drainer nozzle 60 into contact with the surface of the strip 10.

A drier 70 is disposed below the passage of the strip 10 following the drainer nozzle 60. The dryer 70 blows hot air onto the strip 10 to dry and remove washing water and the like. Following the dryer 70, a cutting means 80 is disposed in the passage path of the band material 10. Cutting means 80
Cuts the strip 10 for each valve lead P. As shown in FIG. 3, the cutting of the band material 10 is performed by cutting the notches 1 at both ends.
The process is performed along a straight line connecting the valve leads 4, and the valve lead P having a substantially square shape is separated. As the cutting means, a shearing machine such as a press cutter is used. A cutting device using a principle such as grinding cutting, laser cutting, gas fusing, water jet cutting, or the like can also be used. However, it is preferable to use a cutting technique in which a return or a burr generated at a cutting location does not hinder the use of the plate-shaped component.

In the cutting, a strip may be cut into a curved line or a concave and convex line in addition to a method of cutting a boundary line of each plate-like component linearly. A portion serving as a cutting waste may be generated between adjacent plate-shaped components.

When manufacturing a plurality of rows of plate-shaped parts at the same time, it is possible to add a step of cutting the boundaries of each row of the plate-shaped parts. However, the cutting process for each row can be performed simultaneously with the above-described cutting process or after the cutting process and before the finishing process.

The separated valve lead P is mounted on the mounting table 92.
And is sucked and held by the vacuum suction arm 94 and transported to the next processing step.

The valve lead P thus obtained is
With respect to the functionally important structural parts such as the valve element piece 12 and the through-hole 13, the deburring operation, the laser dross removing operation, and the R chamfering operation are completed. In addition, the cutting blade 8
No processing such as deburring is performed on the side edge of the valve lead P cut at 0. This is because, in the case of the valve lead P, in use, the outer peripheral edge of the valve lead P is not so important in terms of function, and even if finishing such as deburring is not performed, no trouble in use occurs at all. According to the above-described embodiment, after performing the pressing, the laser processing, and the deburring with the strip 10 as it is, the strip 10 is separated into individual valve leads, that is, the plate-shaped components P by cutting. Strip 1 compared to veneer material
In the case of 0, transport and handling are easy, the mechanisms and devices required for transport and handling can be simplified, and the holding during the processing step is reliable and stable. Even when a plurality of types of plate-shaped components P having different shapes are continuously manufactured, the plate-shaped components P are sent from the cutting process through the deburring process in the order of the shape pattern formed by press working or the like. Easy to manage. After the deburring step, there is no need to perform an operation of separating each type. Further, if the processing conditions such as press working are changed by performing a design change, the plate-shaped component whose design has been changed is immediately sent out. In the above embodiment, the valve lead of the reciprocating compressor is shown as a specific example of the plate-shaped component. However, the plate-shaped component is made of stainless steel or other metal or metal alloy, and has an internal shape as a specific shape for fulfilling a desired function. As long as it is a plate-shaped part having the above-mentioned shape part, a part incorporated in any mechanical equipment or apparatus can be applied. Here, the term “internal shape” is a concept that includes not only a hole or a groove closed inside the plate-shaped component, but also a cutout groove or a concave portion partially open to the outer periphery. The internal shape includes a cutout portion that can be formed by cutting the band material. The plate-shaped component may be a flat component, or may have a concave-convex shape such as a dent, a projection, or a ridge on a flat surface. In the internal shape, the function of the plate-shaped parts such as the valve element piece and bolt insertion hole of the valve lead, the passage holes and grooves for various fluids, the engagement shape part with other parts, and the thickness reduction for weight reduction In addition to the structure required for the design, it also includes design shapes that enhance the appearance. (Embodiment 2) The embodiment shown in FIG.
Deburring machine 4 provided with ceramic wheel 42 and the like
Instead of using 0, liquid honing is performed.

A spray nozzle 48 is provided on the running path of the strip 10.
Is arranged. The spray nozzle 48 sprays fine abrasive grains together with water with pressure on the surface of the band material 10 to scrape burrs, returns, dirt, foreign matter, and the like. Although not shown, the spray nozzle 48 is attached to the tip of the robot arm so that the spray direction and the spray position of the abrasive liquid from the spray nozzle 48 can be freely controlled. As a result, appropriate processing can be performed according to the shape of the cut portion formed in the band material 10.

The removal of the laser dross is more effective than the above-mentioned liquid honing.
A value of 0 gives a better finish, but the liquid honing process is more easily applied to a shape having large irregularities.

[0024]

According to the method for manufacturing a plate-shaped component of the present invention,
After cutting and deburring such as laser processing, etc., in the form of a strip instead of a veneer material, the strip is cut to obtain individually divided plate-like parts, making it easier to handle. Cutting and deburring can be performed in the form of a material. In the case of a strip, the work corresponding to each plate-shaped part is brought in and taken out to a plurality of processing devices in order, and the entire strip can be integrally and continuously performed efficiently. It is easy to hold. It is also easy to continuously manufacture multiple types of plate-shaped parts with different shapes,
It is possible to quickly respond to changes in the design of plate-shaped parts.

[Brief description of the drawings]

FIG. 1 is a process diagram showing a plate-shaped component manufacturing apparatus and a manufacturing process according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a manufacturing process of the present invention.

FIG. 3 is a plan view of the strip showing the processing state of the present invention step by step.

FIG. 4 is a process chart showing another embodiment of the deburring work of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Strip material 20 Progressive press machine 30 Laser processing nozzle 40 Deburring machine 42 Ceramic wheel 44 Rotary brush 46 Finishing wheel 50 Cleaning nozzle 60 Drain roller 70 Dryer 80 Cutting blade 92 Product receiving stand 94 Vacuum suction arm P Plate part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Masateru Nakayama 4-5-2, Takaidahondori, Higashiosaka-shi, Osaka Matsushita Refrigerator (72) Hiroki Kawabata 4-2-2, Takaidahondori, Higashiosaka-shi, Osaka No.5 Matsushita Refrigerator (72) Inventor Shigeki Sugimoto 4-5-2-5 Takaida Hondori, Higashiosaka City, Osaka Prefecture Matsushita Refrigerator

Claims (3)

[Claims] 1. A method of manufacturing a plate-shaped component for obtaining a plate-shaped component while continuously supplying a strip, wherein a cutting step of cutting a cut-off portion having an internal shape of the plate-shaped component from the strip is performed. A method of manufacturing a plate-like component, comprising: a finishing step of repairing a defect generated around the cut-off portion in the cutting step; and a cutting step of cutting the band material into individual plate-like parts. 2. The method according to claim 1, wherein the cutting step includes laser processing, and the finishing step includes laser dross removing processing using an elastic grinding wheel. 3. A valve lead for a reciprocating compressor having a plate-shaped part made of a thin metal plate and having a valve element piece disposed at the center and separated from the periphery by a through groove, and a mounting through-hole disposed on the outer periphery. 3. The method for manufacturing a plate-shaped component according to claim 1, wherein the cutting step includes a press working for extracting the mounting through hole and a laser processing for cutting the through groove. 4.