JP2014163354A - Manufacturing method of partition plate, partition plate forming member and rotary compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a partition plate, a partition plate forming member and a rotary compressor capable of reducing the number of components on a manufacturing process.SOLUTION: A manufacturing method for manufacturing a plate-shaped partition plate which is used for a rotary compressor provided with a plurality of cylinders formed of compression chambers respectively on inner parts and is clamped by two cylinders in order to partition two compression chambers adjacent to each other includes: a first process of forming undivided partition plate provided with two division partition plates arranged on the same flat surface and an interposition part which is interposed between two division partition plates and connects two division partition plates to each other integrally; a second process of subjecting the undivided partition plate to at least one side of prescribed surface treatment and heat treatment; and a third process of removing the interposition part and dividing the undivided partition plate into two division partition plates.

Description

  The present invention relates to a partition plate manufacturing method for forming a plate-like partition plate used in a rotary compressor, a partition plate forming member, and a rotary compressor.

  Conventionally, a method of dividing a component is known. For example, Patent Document 1 relates to a method for manufacturing a cylinder for a rotary hermetic compressor having a rolling piston by defining a two-divided diameter plane including a weakening line by setting a tension concentration zone of the cylinder and applying a separation force to the cylinder. A method is disclosed in which the cylinder is cut according to a two-divided diameter plane and then both parts of the two-divided cylinder are joined. In the same document, since the “assembled” corrugated surface is created in the divided region by dividing the cylinder as described above, the corrugated surfaces created on both parts of the two-divided cylinder are completely engaged with each other, and the prototype of the cylinder is obtained. It can be easily reconfigured.

JP-A-5-202880 (3rd, 4th pages, etc.) JP 2001-353711 A (3rd, 4th page, etc.)

  Generally, a two-cylinder rotary compressor compresses refrigerant gas by gradually reducing the volume of two compression chambers partitioned by a rolling piston, a cylinder, a partition plate, and a vane. ing. In the rotary compressor, in order to improve the compression performance, it is effective to increase the eccentric amount of the eccentric portion provided in the crankshaft. However, when assembling the above-described two-cylinder rotary compressor using an integrally formed partition plate, it is necessary to pass at least one eccentric portion through the through hole of the partition plate. Therefore, if the amount of eccentricity of the eccentric portion is increased, it is necessary to increase the inner diameter of the through hole of the partition plate, so that it may be difficult to ensure airtightness between the upper and lower compression chambers by the partition plate.

  In order to suppress expansion of the inner diameter of the through hole of the partition plate, a divided partition plate in which the partition plate is divided into two in advance on the dividing surface passing through the through hole may be used instead of the integrally formed partition plate. The divided partition plates are assembled again with the intermediate shaft portion between the two eccentric portions of the crankshaft being sandwiched in the process of assembling the compressor. Since the partition plate is a part constituting the compression chamber of the two-cylinder rotary compressor, the adhesion between the divided partition plates that are divided and recombined greatly affects the performance of the compressor.

  In order to improve the adhesion between the divided partition plates, a high-precision surface property is required for the divided surfaces of the divided partition plates. In order to satisfy this requirement, it is necessary to perform high-precision grinding on the divided surface of the divided partition plate. Furthermore, when the roundness of the edge part of the ground processed surface (divided surface) is not minute, the airtightness of the compression chamber is deteriorated, causing a reduction in the performance of the compressor.

  When such a divided partition plate is molded by a mold using a method such as powder metallurgy, pressing, casting, etc., in a state where the molded shape is divided, it is compared with a partition plate formed integrally. The number of parts in the process increases. For this reason, there arises a problem that the manufacturing cost increases due to an increase in mold production cost, molding unit price, surface treatment cost, heat treatment cost, and the like.

  Further, in a state where the molded shape is divided, it is necessary to reduce the machining allowance as much as possible in order to suppress the machining cost when performing the grinding process in order to ensure adhesion. However, in the case of powder metallurgy, if lands and chamfered shapes are not formed at the edges of the divided surface, in the process of compression molding metal powder mixed with various metal powders at room temperature, there is inevitable burrs in the compression direction. It will occur. For this reason, when a burr contacts with another object at the time of material handling before a sintering process, an edge will be easily lost. When the edge defect occurs, the defect part remains even after the grinding process, and the performance of the compressor is deteriorated due to deterioration in airtightness.

  Furthermore, in the case of press working, the occurrence of sagging of the split surface edge portion is unavoidable during press punching. The length of the sagging range is about 30 times as long as the split surface grinding allowance for achieving an appropriate machining cost. For this reason, unless rough processing for removing the sag portion that induces an increase in processing cost is performed, the performance of the compressor is deteriorated due to deterioration of hermeticity.

  Moreover, in the conventional method disclosed by patent document 1, when the use application of a partition plate is considered, the following problems will arise. That is, if the surface groove for obtaining the weakening line is a through hole in the partition plate thickness direction, the upper and lower compression chambers communicate with each other through the surface groove, which causes a reduction in the performance of the compressor. On the other hand, when the surface groove is a through hole in the diameter direction of the partition plate, the direction of the through hole is orthogonal to the mold slide direction when performing powder metallurgy, casting, pressing, or the like. For this reason, formation of the through-hole requires removal processing by machining or electric discharge machining, which is a separate process from the mold forming, and the productivity is remarkably deteriorated.

  The present invention has been made to solve at least one of the above-described problems, and a first object is to provide a partition plate manufacturing method and partition plate formation capable of reducing the number of parts in the manufacturing process. It is to provide a member and a rotary compressor.

  A second object is to provide a partition plate manufacturing method, a partition plate forming member, and a rotary compressor, which can be stably manufactured while satisfying the accuracy required for the divided partition plate.

  In addition, a third object is to provide a partition plate manufacturing method, a partition plate forming member, and a rotary compressor that can reduce the processing time and consumable tool costs for dividing the partition plate to reduce the cost. It is in.

  The partition plate manufacturing method according to the present invention is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein, and is sandwiched between two cylinders in order to partition between two adjacent compression chambers. Manufacturing method for manufacturing a plate-shaped partition plate, which is interposed between two divided partition plates arranged on the same plane and the two divided partition plates, and integrally connects the two divided partition plates to each other A first step of forming an undivided partition plate provided with an intervening portion, a second step of applying at least one of a predetermined surface treatment and heat treatment to the undivided partition plate, and removing the intervening portion and undivided And a third step of dividing the partition plate into two divided partition plates.

  Further, the partition plate forming member according to the present invention is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein, and two cylinders for partitioning between two adjacent compression chambers. A partition plate forming member for forming a plate-shaped partition plate sandwiched between two partition partitions disposed on the same plane, and two partition partitions interposed between the two partition partitions The plates are integrally connected to each other, and there are intervening portions that are removed when the two divided partition plates are divided, and the surfaces of the two divided partition plates and the interposed portions are subjected to predetermined surface treatment and heat treatment. At least one of the above is applied, two divided partition plates are divided in a later step, and the two divided partition plates are combined again in a later step of the step, thereby forming a partition plate. And it is characterized in and.

  According to the present invention, since the predetermined surface treatment or heat treatment can be performed on the undivided partition plate before being divided into two divided partition plates, the number of parts in the manufacturing process can be reduced.

It is a longitudinal cross-sectional view which shows schematic structure of the 2 cylinder rotary compressor which concerns on Embodiment 1 of this invention. It is a top view which shows schematic structure of the division | segmentation partition plate which concerns on Embodiment 1 of this invention. 2A is a plan view showing a schematic configuration of the left divided partition plate, and FIG. 2B is a plan view showing a schematic configuration of the right divided partition plate. It is a flowchart which shows the manufacturing process of the division | segmentation partition plate which concerns on Embodiment 1 of this invention. It is a top view which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on Embodiment 1 of this invention. It is a figure which shows the cutting method of the undivided partition plate which concerns on Embodiment 1 of this invention. 5 (a) shows a state viewed from the rotation axis direction of the cutting edge of the metal saw, and FIG. 5 (b) shows a state viewed from the relative feed direction of the cutting edge with respect to the undivided partition plate. Is shown. It is a figure which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on the modification of Embodiment 1 of this invention. FIG. 6A is a plan view of the undivided partition plate, and FIG. 6B is a front view of the undivided partition plate. It is a figure which shows the cutting method of the undivided partition plate which concerns on the modification of Embodiment 1 of this invention. 7A shows a state viewed from the rotation axis direction of the cutting edge of the metal saw, and FIG. 7B shows a state viewed from the relative feeding direction of the cutting edge with respect to the undivided partition plate. Is shown. It is a top view which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on Embodiment 2 of this invention. It is a top view which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on the modification of Embodiment 2 of this invention. It is a top view which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on Embodiment 3 of this invention. It is a figure which shows schematic structure of the undivided partition plate (member for partition plate formation) which concerns on Embodiment 4 of this invention. In addition, Fig.11 (a) is a top view which shows schematic structure of an undivided partition plate, and FIG.11 (b) is a front view which shows schematic structure of an undivided partition plate.

  Hereinafter, a manufacturing method of a partition plate, a member for forming a partition plate, and a rotary compressor concerning an embodiment of the invention are explained based on a drawing.

Embodiment 1 FIG.
First, the configuration and operation of a two-cylinder rotary compressor (hereinafter simply referred to as “rotary compressor”) 1 according to Embodiment 1 of the present invention will be described. FIG. 1 is a longitudinal sectional view showing a schematic configuration of a rotary compressor 1 according to the present embodiment. The rotary compressor 1 is one of components of a refrigeration cycle used in various industrial machines such as a refrigerator, a freezer, a vending machine, an air conditioner, a refrigeration apparatus, and a water heater. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

[Rotary compressor configuration]
A rotary compressor 1 shown in FIG. 1 sucks a fluid (for example, a refrigerant circulating in a refrigeration cycle), compresses the fluid, and discharges the fluid in a high-temperature and high-pressure state. The rotary compressor 1 includes a compression mechanism unit 10 and an electric motor unit 50 that drives the compression mechanism unit 10. The compression mechanism unit 10 and the electric motor unit 50 are accommodated in the sealed container 60. Lubricating oil is stored at the bottom of the sealed container 60. The electric motor unit 50 includes a stator 51 and a rotor 52. A crankshaft 53 is fitted into the rotor 52. The crankshaft 53 is formed with two upper and lower eccentric portions (upper eccentric portion 54a and lower eccentric portion 54b) that are eccentric to each other in opposite directions, that is, shifted by 180 degrees in phase.

  The compression mechanism section 10 includes upper and lower ends of an upper cylinder 21, a lower cylinder 31, a partition plate 40 that partitions the upper cylinder 21 and the lower cylinder 31, and a stack of the upper cylinder 21, the lower cylinder 31, and the partition plate 40. The main bearing 11 and the sub-bearing 12 also serving as side walls, the upper rolling piston 22 fitted into the upper eccentric portion 54a, the lower rolling piston 32 fitted into the lower eccentric portion 54b, and the inner side of the upper cylinder 21 Has an upper vane 23 that divides the cylinder into a compression chamber and a suction chamber, and a lower vane 33 that divides the inside of the lower cylinder 31 into a compression chamber and a suction chamber.

  A crankshaft 53 is inserted into the upper cylinder 21, the lower cylinder 31 and the partition plate 40. Of the crankshaft 53, the upper eccentric portion 54 a on the main bearing 11 side is disposed in the upper cylinder 21, and the lower eccentric portion 54 b on the auxiliary bearing 12 side is disposed in the lower cylinder 31. Further, the intermediate shaft portion 55 between the upper eccentric portion 54 a and the lower eccentric portion 54 b in the crankshaft 53 is arranged in the partition plate 40. The upper rolling piston 22 and the lower rolling piston 32 can be eccentrically rotated in the upper cylinder 21 and the lower cylinder 31, respectively.

  An upper vane 23 and a lower vane 33 are slidably inserted into the upper cylinder 21 and the lower cylinder 31, respectively. The upper vane 23 is always pressed against the upper rolling piston 22 by upper urging means 24 configured by, for example, a coil spring. The upper vane 23 has a function of partitioning a space formed between the upper cylinder 21 and the upper rolling piston 22 into a compression chamber and a suction chamber. Similarly, the lower vane 33 is always pressed against the lower rolling piston 32 by a lower urging means 34 constituted by, for example, a coil spring, and a space formed between the lower cylinder 31 and the lower rolling piston 32 is formed. It has a function of partitioning into a compression chamber and a suction chamber.

[Rotary compressor operation]
In the rotary compressor 1 configured as described above, when the rotor 52 rotates, the crankshaft 53 fitted in the rotor 52 rotates, and the upper eccentric portion 54 a and the lower eccentric portion are rotated as the crankshaft 53 rotates. 54b rotates. As the upper eccentric portion 54 a rotates, the upper rolling piston 22 rotates and slides inside the upper cylinder 21. Further, the lower rolling piston 32 rotates and slides inside the lower cylinder 31 by the rotation of the lower eccentric portion 54b. That is, the upper rolling piston 22 and the lower rolling piston 32 rotate along the inner walls of the upper cylinder 21 and the lower cylinder 31, respectively.

  As a result, the refrigerant gas is sucked from the suction pipe 61 into the compression chamber, and the rolling piston (upper rolling piston 22, lower rolling piston 32), cylinder (upper cylinder 21, lower cylinder 31), partition plate 40, and vane ( The volume of the space (compression chamber) partitioned by the upper vane 23 and the lower vane 33) is gradually reduced, and the refrigerant gas in the compression chamber is compressed. The compressed high-pressure refrigerant gas is discharged into the sealed container 60 and discharged from the discharge pipe 62 to the outside of the sealed container 60.

[Configuration of partition plate]
Next, the configuration of a partition plate (an example of precision parts used in the rotary compressor) 40 used in the rotary compressor 1 according to the present embodiment and sandwiched between the upper cylinder 21 and the lower cylinder 31 will be described. The partition plate 40 according to the present embodiment is divided into two divided partition plates (divided in advance) in order to increase the eccentric amounts of the upper eccentric portion 54a and the lower eccentric portion 54b in order to improve the performance of the rotary compressor 1. The left divided partition plate 41 and the right divided partition plate 42) are combined.

  2A is a plan view showing a schematic configuration of one divided partition plate (hereinafter sometimes referred to as “left divided partition plate” for convenience) 41, and FIG. 2B is the other divided partition plate. 4 is a plan view showing a schematic configuration of 42 (hereinafter sometimes referred to as “right divided partition plate” for convenience). As shown in FIGS. 2A and 2B, the left divided partition plate 41 and the right divided partition plate 42 are flat plate members each having a substantially semicircular planar shape. The left divided partition plate 41 and the right divided partition plate 42 have a substantially symmetrical shape with the divided surfaces 41a and 41b that are in contact with each other when being combined as symmetrical surfaces. That is, the partition plate 40 according to the present embodiment shown in FIG. 1 has a configuration in which the partition plate 40 is divided into a left partition plate 41 and a right partition plate 42 in directions of 0 degrees and 180 degrees at the rotation angle of the crankshaft 53. Have.

  The left divided partition plate 41 is a flat plate member having a divided surface 41a formed in a substantially planar shape and an outer peripheral surface 41b formed in a substantially semi-cylindrical shape at its ends. In the left divided partition plate 41, the front surface (upper surface) and the rear surface (lower surface) in FIG. 2A are slides on which the upper rolling piston 22 or the lower rolling piston 32 slide. It becomes a moving surface. The left split partition plate 41 has three bolt holes 41c in the thickness direction through which bolts for fastening with the upper cylinder 21, the lower cylinder 31, the main bearing 11, the auxiliary bearing 12, and the like installed vertically are inserted. It is formed through. Further, the split surface 41 a of the left split partition plate 41 is formed with a semi-cylindrical groove 41 d having a semicylindrical cross-sectional shape and extending in the thickness direction of the left split partition plate 41. The semi-cylindrical groove 41d is a communication hole that allows the internal space of the sealed container 60 to communicate with the upper and lower sides of the compression mechanism unit 10 together with the semi-cylindrical groove 42d described later when the left divided partition plate 41 and the right divided partition plate 42 are combined. It functions. Furthermore, a substantially central portion in the radial direction of the dividing surface 41a of the left dividing partition plate 41 has a semi-cylindrical cross-sectional shape larger than the semi-cylindrical groove 41d, and extends in the thickness direction of the left dividing partition plate 41. A semi-cylindrical groove 41e is formed. The semi-cylindrical groove 41e functions as a through hole of the crankshaft 53 together with the semi-cylindrical groove 42e described later when the left divided partition plate 41 and the right divided partition plate 42 are combined.

  The right divided partition plate 42 is a flat plate member having a divided surface 42a formed in a substantially planar shape and an outer peripheral surface 42b formed in a substantially semi-cylindrical shape at its ends. In the right divided partition plate 42, the front surface (upper surface) and the rear surface (lower surface) in FIG. 2B are slides on which the upper rolling piston 22 or the lower rolling piston 32 slide. It becomes a moving surface. The right dividing partition plate 42 has three bolt holes 42c in the thickness direction through which bolts for fastening with the upper cylinder 21, the lower cylinder 31, the main bearing 11, the auxiliary bearing 12, and the like installed vertically are inserted. It is formed through. Further, the right dividing partition plate 42 is formed with a communication hole 42f for allowing the internal space of the sealed container 60 to communicate with the upper and lower sides of the compression mechanism unit 10 in the thickness direction. The split surface 42a of the right partition plate 42 has a semi-cylindrical cross section having the same diameter as the semi-cylindrical groove 41d of the left partition plate 41 and extends in the thickness direction of the right partition plate 42. 42d is formed. The semi-cylindrical groove 42d functions as a communication hole together with the semi-cylindrical groove 41d when the left divided partition plate 41 and the right divided partition plate 42 are combined. Further, in the substantially central portion in the radial direction of the dividing surface 42a of the right dividing partition plate 42, the right dividing partition plate has a semi-cylindrical sectional shape having the same diameter as the semi-cylindrical groove 41e of the left dividing partition plate 41. A semi-cylindrical groove 42e extending in the thickness direction of 42 is formed. The semi-cylindrical groove 42e functions as a through-hole of the crankshaft 53 together with the semi-cylindrical groove 41e when the left divided partition plate 41 and the right divided partition plate 42 are combined.

  When the partition plate 40 is assembled, the left partition plate 41 and the right partition plate 42 are a semi-cylindrical groove 41e of the left partition plate 41, a semi-cylindrical groove 42e of the right partition plate 42, and a half of the left partition plate 41. By aligning the cylindrical groove 41d and the semi-cylindrical groove 42d of the right dividing partition plate 42, it is possible to prevent the left dividing partition plate 41 and the right dividing partition plate 42 from being mistaken.

  Although not shown, in the left divided partition plate 41 and the right divided partition plate 42, an edge portion between the upper end surface and the outer peripheral surfaces 41b and 42b, and an edge between the lower end surface and the outer peripheral surfaces 41b and 42b. The part is subjected to predetermined chamfering. On the other hand, chamfering is not performed on the edge portion between the upper end surface and the divided surfaces 41a and 42a and the edge portion between the lower end surface and the divided surfaces 41a and 42a. A predetermined chamfered surface is formed at an edge portion (for example, E1 portion in FIG. 2A) between the divided surfaces 41a and 42a and the outer peripheral surfaces 41b and 42b. This chamfered surface is not formed by chamfering, but is formed at the time of molding by a mold in the material processing step.

  Also, the left divided partition plate 41 has a surface other than the divided surface 41a (upper end surface, lower end surface, outer peripheral surface 41b, a chamfered surface formed at an edge portion between the divided surface 41a and the outer peripheral surface 41b, etc.), right The surface of the divided partition plate 42 other than the divided surface 42a (upper end surface, lower end surface, outer peripheral surface 42b, chamfered surface formed at the edge portion between the divided surface 42a and the outer peripheral surface 42b, etc.) At least one of surface treatment and heat treatment is applied. On the other hand, neither the surface treatment nor the heat treatment is applied to the dividing surface 41a of the left dividing partition plate 41 and the dividing surface 42a of the right dividing partition plate 42. This is because, in the manufacturing process of the partition plate 40 according to the present embodiment, the undivided partition plate is subjected to at least one of a predetermined surface treatment and a heat treatment (surface treatment / heat treatment step described later) and the unprocessed partition plate 40 This is because a step of dividing the divided partition plate into the left divided partition plate 41 and the right divided partition plate 42 (a cutting step described later) is performed.

[Partition plate manufacturing process]
Next, the manufacturing process of the partition plate 40 according to the present embodiment will be described. FIG. 3 is a flowchart illustrating an example of a manufacturing process of the left divided partition plate 41 and the right divided partition plate 42 that constitute the partition plate 40.

(Step S1)
In the manufacturing process of the left divided partition plate 41 and the right divided partition plate 42, first, material processing is performed (material processing step). Since the partition plate 40 constitutes a part of the compression chamber wall, it needs to be formed of a rigid material. Further, the partition plate 40 needs to have good slidability with the upper rolling piston 22 and the lower rolling piston 32. Therefore, first, an unquenched material is prepared. Then, an undivided partition plate that is integrally processed into a shape close to the combined shape of the left divided partition plate 41 and the right divided partition plate 42 by performing molding (for example, powder metallurgy, pressing, casting, etc.) (Hereinafter, sometimes referred to as “undivided partition plate”). The configuration of the undivided partition plate will be described later with reference to FIG.

  Here, if the left divided partition plate 41 and the right divided partition plate 42 are separately molded, two molds are required for molding by the mold, so that the mold manufacturing cost is doubled. In addition, the press machine processing time is doubled in the pressing process such as powder metallurgy compression process and fine blanking, and the molding unit price increases. On the other hand, in the present embodiment, by integrally forming an undivided partition plate that is close to the shape in which the left divided partition plate 41 and the right divided partition plate 42 are combined, the above-described mold manufacturing costs and molding unit prices are obtained. Can be prevented.

(Step S2)
Next, at least the surface of the undivided partition plate obtained in step S1 is subjected to either a predetermined surface treatment or heat treatment, or both surface treatment and heat treatment (surface treatment / heat treatment step). When heat treatment is performed, it is desirable to perform heat treatment in a vacuum furnace. Thereby, since it can prevent that the carbon content of the surface used as a sliding surface in an undivided partition plate changes before and after hardening, slidability can be stabilized. In the present embodiment, the surface treatment and the heat treatment are performed on the undivided partition plate before being divided into the left divided partition plate 41 and the right divided partition plate 42 in the cutting step (step S4) described later, so that the cutting is performed. Compared to the case where surface treatment or heat treatment is performed after processing (after division), the time required for aligning and charging the processing furnace is about half. Thereby, the manufacturing cost of a division | segmentation partition plate can be reduced. The surface treatment / heat treatment process in step S2 is performed independently of the material processing process in step S1, for example.

(Step S3)
Next, if necessary, rough grinding of the sliding surface may be performed on the undivided partition plate (sliding surface rough grinding step). At the stage where step S2 is completed, the surface properties of the sliding surface of the undivided partition plate are often not perfect due to the accuracy of casting or pressing or the influence of heat treatment distortion. In a cutting process (step S4) to be described later, it is easy to perform the cutting process with reference to the sliding surface. For this reason, stabilization of the cutting accuracy can be expected by adjusting the surface properties of the sliding surface serving as the processing reference surface at this stage. Hereinafter, an undivided partition plate that has been subjected to both the processes of steps S2 and S3 or only the process of step S2 (when the process of step S3 is omitted) may be referred to as a “partition plate forming member”.

(Step S4)
Next, the undivided partition plate (partition plate forming member) is cut and divided into two left divided partition plates 41 and right divided partition plates 42 each having a shape close to the final shape (cut processing). Process). Details of the cutting process will be described later with reference to FIGS. 4 and 5.

(Step S5)
Next, surface grinding is applied to the sliding surface of the left divided partition plate 41 and the right divided partition plate 42 with the upper rolling piston 22 or the lower rolling piston 32 (sliding surface grinding step). Regarding the surface grinding of the sliding surface, the left divided partition plate 41 and the right divided partition plate 42 may be combined and the surface grinding may be performed as one partition plate 40. Thereby, the dispersion | variation in the thickness of the left division | segmentation partition plate 41 and the right division | segmentation partition plate 42 can be reduced.

(Step S6)
Next, surface grinding is performed on the split surface 41a of the left split partition plate 41 and the split surface 42a of the right split partition plate 42 (split surface grinding step). The dividing surface 41a of the left dividing partition plate 41 is formed on the same plane with the semi-cylindrical grooves 41d and 41e interposed therebetween. Similarly, the dividing surface 42a of the right dividing partition plate 42 is formed on the same plane with the semi-cylindrical grooves 42d and 42e interposed therebetween. For this reason, it is desirable to process each of the left divided partition plate 41 and the right divided partition plate one by one for the surface grinding of the divided surfaces 41a and 42a.

(Step S7)
Next, burrs at the edge part generated by the surface grinding process (step S5) of the sliding surface and the surface grinding process (step S6) of the divided surface are removed (edge part deburring step).

  The left divided partition plate 41 and the right divided partition plate 42 are manufactured through the steps S1 to S7 as described above. The left divided partition plate 41 and the right divided partition plate 42 are separated from each other between the divided surfaces 41a and 42a and between the semi-cylindrical grooves 41e and 42e in the assembly process of the rotary compressor 1 performed thereafter. The shaft portions 55 are combined so as to sandwich the shaft portion 55. The left divided partition plate 41 and the right divided partition plate 42 combined in this way function as the partition plate 40 in the rotary compressor 1.

[Configuration of undivided partition plate (partition plate forming member)]
Next, the structure of the undivided partition plate (work shape) according to the present embodiment will be described. FIG. 4 is a plan view showing a schematic configuration of the undivided partition plate 100 according to the present embodiment. The undivided partition plate (partition plate forming member) 100 shown in FIG. 4 is obtained before the cutting process of step S4 by passing through the steps S1 to S3 or steps S1 to S2 shown in FIG. Is. That is, the undivided partition plate 100, which is a partition plate forming member, is subjected to surface treatment, heat treatment, rough grinding of the sliding surface, etc. to satisfy the required sliding performance after being molded by a mold. Can be obtained.

  As shown in FIG. 4, the undivided partition plate 100 includes a left divided partition plate region 141 that becomes the left divided partition plate 41 after division, a right divided partition plate region 142 that becomes the right divided partition plate 42 after division, and a left divided partition plate. A flat plate member having an interposition part 110 interposed between the partition plate region 141 and the right partition plate region 142 and integrally connecting the left partition plate region 141 and the right partition plate region 142 on the same plane. It is.

  The left divided partition plate area 141 has the same configuration as the left divided partition plate 41 shown in FIG. 2A except that the processes in steps S4 to S7 are not performed. That is, the left divided partition area 141 is divided into the divided plane 41a (the plane that becomes the divided plane 41a is indicated by a virtual line L1 in FIG. 4) and the outer (left side) area of the undivided divider 100. Applicable. The left divided partition plate region 141 has an outer peripheral surface 41b formed in a substantially semicylindrical shape. Further, the left divided partition plate region 141 functions as three bolt holes 41c, a semi-cylindrical groove 41d that functions as a bolt hole together with the semi-cylindrical groove 42d, and a through-hole of the crankshaft 53 together with the semi-cylindrical groove 42e. A semi-cylindrical groove 41e is formed.

  The right divided partition plate area 142 has the same configuration as the right divided partition plate 42 shown in FIG. 2B except that the processes of steps S4 to S7 are not performed. That is, the right divided partition region 142 is divided into regions of the undivided partition plate 100 on the divided surface 42a (in FIG. 4, the plane that becomes the divided surface 42a is indicated by an imaginary line L2) and the outer (right) region thereof. Applicable. In the present embodiment, the plane (virtual line L2) that becomes the dividing plane 42a is substantially parallel to the plane (virtual line L1) that becomes the dividing plane 41a. Moreover, the right division | segmentation partition area 142 has the outer peripheral surface 42b formed in the substantially semi-cylindrical shape. The right divided partition region 142 has three bolt holes 42c, one communication hole 42f, a semi-cylindrical groove 42d that functions as a communication hole together with the semi-cylindrical groove 41d, and a penetrating through the crankshaft 53 together with the semi-cylindrical groove 41e. A semi-cylindrical groove 42e that functions as a hole is formed.

  The interposition part 110 corresponds to a region of the undivided partition plate 100 that is sandwiched between a plane (virtual line L1) that becomes the dividing surface 41a and a plane (virtual line L2) that becomes the dividing surface 42a. In addition, the intervening portion 110 serves as a cutting allowance that is removed during the cutting process of dividing into the left divided partition plate 41 and the right divided partition plate 42 in a cutting process step (step S4) to be performed later. The width of the interposition part 110 (interval between the dividing surface 41a and the dividing surface 42a) is, for example, substantially the same as the width of a metal saw cutting edge 200 (described later) used in the cutting process.

  The interposition part 110 has a shape such that the overall shape of the undivided partition plate 100 is as continuous as possible. That is, the interposition part 110 has the outer peripheral surfaces 110a and 110b which connect continuously between the outer peripheral surface 41b of the left divided partition plate area 141 and the outer peripheral surface 42b of the right divided partition plate region 142. The interposition part 110 continuously connects the surface of the semi-cylindrical groove 41e of the left divided partition plate region 141 and the surface of the semi-cylindrical groove 42e of the right divided partition plate region 142, and together with both the semi-cylindrical grooves 41e and 42e. It has inner wall surfaces 110c and 110d constituting one long cylindrical hole 120a. The long cylindrical hole 120 a is located at the approximate center of the undivided partition plate 101. Further, the interposition part 110 continuously connects the surface of the semi-cylindrical groove 41d of the left divided partition plate region 141 and the surface of the semi-cylindrical groove 42d of the right divided partition plate region 142, and together with both the semi-cylindrical grooves 41d and 42d. It has inner wall surfaces 110e and 110f that constitute one long cylindrical hole 120b.

  As a whole, the interposition part 110 has a substantially quadrangular prism-like shape provided with four surfaces including a front surface, a rear surface, and two divided surfaces (virtual lines L1 and L2) in FIG. However, gaps are formed between the inner wall surfaces 110c and 110d (a part of the long cylindrical hole 120a) and between the inner wall surfaces 110e and 110f (a part of the long cylindrical hole 120b). A portion of the interposition part 110 other than the gap, that is, a portion between the outer peripheral surface 110a and the inner wall surface 110c, a portion between the inner wall surface 110d and the inner wall surface 110e, and between the inner wall surface 110f and the outer peripheral surface 110b. This part functions as a connecting portion that connects the left divided partition region 141 and the right divided partition region 142.

  In the undivided partition plate 100 of the present embodiment, between the outer peripheral surface 41b and the outer peripheral surfaces 110a and 110b, between the semicylindrical groove 41e surface and the inner wall surfaces 110c and 110d, and between the semicylindrical groove 41d surface and the inner wall surface 110e. 110f are provided with a step which becomes lower on the interposition part 110 side and an inclined surface which is inclined toward the interposition part 110 in order to connect the steps. This inclined surface becomes a chamfered surface formed at an edge portion between the divided surfaces 41a, 42a and the outer peripheral surfaces 41b, 42b after being divided into the left divided partition plate 41 and the right divided partition plate 42. is there. Similarly, there are interposed between the outer peripheral surface 42b and the outer peripheral surfaces 110a and 110b, between the surface of the semi-cylindrical groove 42e and the inner wall surfaces 110c and 110d, and between the surface of the semi-cylindrical groove 42d and the inner wall surfaces 110e and 110f. A step which becomes lower on the portion 110 side and an inclined surface which is inclined on the interposition portion 110 side in order to connect the steps are provided. Due to these steps and inclined surfaces, the outer peripheral surfaces 41b, 110a, 42b, 110b of the undivided partition plate 100, the inner wall surfaces of the substantially long cylindrical holes 120a (semi-cylindrical grooves 41e, 42e, inner wall surfaces 110c, 110d), and substantially long The inner wall surface (semi-cylindrical grooves 41d and 42d, inner wall surfaces 110e and 110f) of the cylindrical hole 120b has a surface shape that is recessed at the interposition part 110.

[Details of cutting process]
Next, the cutting process in step S4 will be described in more detail. As described above, the cutting process is performed after the formed undivided partition plate 100 is subjected to surface treatment, heat treatment, or the like. In the cutting process, cutting using a metal saw, grindstone, wire saw, wire discharge, laser, water jet, or the like can be performed. Here, as an example, a cutting method using a metal saw (an example of a cutting blade) will be described.

  FIG. 5 is a diagram illustrating an example of a method of cutting the undivided partition plate 100 using a metal saw. FIG. 5A shows a state seen from the direction of the rotation axis of the cutting edge 200 of the metal saw, and FIG. 5B shows the relative feeding direction of the cutting edge 200 with respect to the undivided partition plate 100 (FIG. 5). The state seen from (right side in (a)) is shown. 5A and 5B, the solid arrow indicates the rotation direction of the cutting edge 200, and the thick arrow indicates the relative feed direction of the cutting edge 200 with respect to the undivided partition plate 100.

  As shown in FIGS. 5A and 5B, the undivided partition plate 100 has a reference pad 210 with an end surface (a front surface or a rear surface in FIG. 4) 100a serving as a sliding surface as a reference surface. It is cut in the state applied to. The cutting direction of the undivided partition plate 100 with a metal saw is such that the relative feed direction of the cutting edge 200 is the longitudinal direction of the interposition part 110 so that the cutting arc length A1 at which the cutting edge 200 cuts the undivided partition plate 100 is shortened. Is desirable. In addition, it is desirable to make the cut down so that the application of the reference surface of the undivided partition plate 100 to the reference pad 210 can be held by the rotation of the cutting blade 200.

  During the cutting process as described above, a tensile stress that curves the end surface acts on the edge portion E2 formed by the cut surface and the end surface in the direction in which the blade is removed. At this time, the edge portion E2 may be lost depending on the material of the undivided partition plate 100 and the magnitude of the tensile stress. In the present embodiment, the reference pad 210 is disposed up to a position where an appropriate clearance C1 is obtained with respect to the cutting edge 200 of the metal saw. The appropriate clearance C1 is, for example, a range larger than 0 and smaller than the machining allowance a (0 <C1 <a), where a is a machining allowance (that is, the width of the interposition part 110) in cutting. Thereby, since the compressive stress which opposes a tensile stress can be made to act on the edge part E2, the edge quality of the left division | segmentation partition plate 41 after cutting and the right division | segmentation partition plate 42 can be made favorable. The reference pad 210 may be affixed to the end surface 100a of the undivided partition plate 100 at least in the cutting process.

  As described above, according to the present embodiment, since the component to be processed in the steps S1 to S3 in FIG. 3 is not one divided partition plate but one undivided partition plate, The number of internal parts can be reduced. For this reason, manufacturing costs such as mold manufacturing costs, molding unit costs, surface treatment costs, and heat treatment costs can be reduced. In the present embodiment, the split surfaces 41a and 42a of the left split partition plate 41 and the right split partition plate 42 are formed by cutting rather than mold forming such as powder metallurgy or press working. Thereby, since the burr | flash and sagging of the division surface edge part which arise by mold forming can be prevented, the precision requested | required of the left division | segmentation partition plate 41 and the right division | segmentation partition plate 42 can be satisfy | filled more reliably, and the partition plate 40 is stabilized. Can be manufactured.

  Further, according to the present embodiment, since the reference pad 210 is disposed at a position where an appropriate clearance C1 is obtained with respect to the cutting edge 200 of the metal saw, a compressive stress that opposes the tensile stress is applied to the edge portion E2. The edge quality of the left divided partition plate 41 and the right divided partition plate 42 can be improved.

  FIG. 6 shows a configuration of an undivided partition plate (partition plate forming member) 101 according to a modification of the present embodiment. FIG. 6A is a plan view of the undivided partition plate 101, and FIG. 6B is a front view of the undivided partition plate 101. 6A and 6B, in the interposition part 110 of the undivided partition plate 101, at least one of the upper end surface 110g and the lower end surface 110h (in this example, the lower end surface 110h) that can serve as a reference surface at the time of cutting. Only), a rectangular groove (an example of a surface groove) 111 having a rectangular cross section and extending in the longitudinal direction of the interposition part 110 is formed.

  FIGS. 7A and 7B are diagrams corresponding to FIGS. 5A and 5B and show an example of a method for cutting the undivided partition plate 101 in the present modification. In the undivided partition plate 101 in this modification, the cutting allowance (cutting allowance) 112 of the intervening portion 110 can be miniaturized particularly when the cutter is pulled out during the cutting process shown in FIGS. It becomes possible. Thereby, in the undivided partition plate 101 at the time of cutting, the tensile stress in the direction in which the sliding surface is curved can be miniaturized. Therefore, according to the present modification, the same effect as the configuration shown in FIG. 4 can be obtained, and the edge quality of the left divided partition plate 41 and the right divided partition plate 42 after cutting can be further improved.

  Moreover, the removal volume of the interposition part 110 at the time of a cutting process can be reduced because the rectangular groove | channel 111 is formed. As a result, the tool feed rate can be increased, the cutting time can be shortened while preventing the blade rigidity from being lowered, and the manufacturing cost of the partition plate can be reduced. Furthermore, since the removal volume of the interposition part 110 can be reduced, the consumption of the blade can be suppressed, so that the manufacturing cost can be reduced by increasing the blade life.

  In this modification, the interposition part 110 is formed with a rectangular groove 111 having a rectangular cross section, but the surface groove formed in the interposition part 110 may have a cross-sectional shape other than a rectangle.

Embodiment 2. FIG.
Next, a method for manufacturing a partition plate and a member for forming a partition plate according to Embodiment 2 of the present invention will be described. In the present embodiment, a partition plate manufacturing method and a partition plate forming member that can further reduce the cutting processing time and suppress the consumption of the cutting blade will be described based on the configuration of the first embodiment. FIG. 8 is a plan view showing a schematic configuration of an undivided partition plate (partition plate forming member) 102 according to the present embodiment. In addition, about the component which has the same function and effect | action as the undivided partition plate 100 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, the interposition part 110 of the undivided partition plate 102 is cut from the outer peripheral surface 110 a toward the inner peripheral side, and a slit (extraction part) 130 extending along the longitudinal direction of the interposition part 110. The slit 131 is cut from the outer peripheral surface 110b toward the inner peripheral side and extends along the longitudinal direction of the interposition part 110. Both slits 130 and 131 are cut to the front so as not to reach the long cylindrical hole 120a. The slit 131 extends across the long cylindrical hole 120b. As a result, the long cylindrical hole 120b does not have an opening shape in which the entire circumference is closed, but an opening shape in which one end on the outer peripheral surface 110b side is open.

  Moreover, the interposition part 110 has the connection part 132 formed between the slit 130 and the long cylindrical hole 120a, and the connection part 133 formed between the long cylindrical hole 120a and the slit 131. FIG. . The left divided partition region 141 and the right divided partition region 142 are connected by two connecting portions 132 and 133.

  When the undivided partition plate 102 shown in FIG. 8 is cut by the same method as in the first embodiment, the tool feed speed is increased in inverse proportion to the removal volume at the position where the slits 130 and 131 are formed. Can do. At this time, when the width of the cutting allowance (width of the interposition part 110) is reduced in order to increase the tool feed speed without forming the slits 130 and 131, the rigidity of the blade is remarkably reduced, and the surface property of the cut surface is deteriorated. You must keep in mind that

  As described above, in the present embodiment, in addition to obtaining the same effect as in the first embodiment, the removal volume of the interposition part 110 during the cutting process can be reduced by having the slits 130 and 131. it can. As a result, the tool feed rate can be increased, the cutting time can be shortened while preventing the blade rigidity from being lowered, and the manufacturing cost of the partition plate can be reduced. Furthermore, since the removal volume of the interposition part 110 can be reduced, the consumption of the blade can be suppressed, so that the manufacturing cost can be reduced by increasing the blade life.

  FIG. 9 is a plan view showing a schematic configuration of an undivided partition plate (partition plate forming member) 103 according to a modification of the present embodiment. As shown in FIG. 9, the interposition part 110 of the undivided partition plate 103 is cut from the outer peripheral surface 110a toward the inner peripheral side and extends along the longitudinal direction of the interposition part 110, and a long cylindrical shape. The slit 120 is cut from the inner wall surface 110 c of the hole 120 a toward the outer peripheral side and extends along the longitudinal direction of the interposition part 110. In addition, the undivided partition plate 103 is cut from the inner wall surface 110d of the long cylindrical hole 120a toward the outer peripheral side and extends along the longitudinal direction of the interposition part 110, and the outer peripheral surface 110b of the interposition part 110. And a slit 137 that is cut along the longitudinal direction of the interposition part 110. Since the slit 137 reaches the long cylindrical hole 120b, the long cylindrical hole 120b does not have an opening shape in which the entire circumference is closed, but has an opening shape in which one end on the outer peripheral surface 110b side is open.

  Further, the interposition part 110 has a connecting part 138 formed between the slit 134 and the slit 135, and a connecting part 139 formed between the slit 136 and the slit 137 (long cylindrical hole 120b). Yes. The left divided partition region 141 and the right divided partition region 142 are connected by two connecting portions 138 and 139.

  According to the undivided partition plate 103 of this modification, the same effect as that of the undivided partition plate 102 shown in FIG. 8 can be obtained.

Embodiment 3 FIG.
Next, a method for manufacturing a partition plate and a member for forming a partition plate according to Embodiment 3 of the present invention will be described. In the present embodiment, a partition plate manufacturing method and a partition plate forming member capable of increasing the accuracy of the surface properties of the cut surface will be described based on the configuration of the first embodiment. FIG. 10 is a plan view showing a schematic configuration of an undivided partition plate (partition plate forming member) 104 according to the present embodiment. In addition, about the component which has the same function and effect | action as the undivided partition plate 100 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, the interposition part 110 of the undivided partition plate 104 is cut from the inner wall surface 110 c of the long cylindrical hole 120 a toward the outer peripheral side, and extends along the longitudinal direction of the interposition part 110. And a slit 151 that is cut from the inner wall surface 110 d of the long cylindrical hole 120 a toward the outer peripheral side and extends along the longitudinal direction of the interposition part 110. The slit 150 does not reach the outer peripheral surface 110 a of the interposition part 110. The slit 151 reaches the long cylindrical hole 120b, but does not reach the outer peripheral surface 110b of the interposition part 110. As a result, the long cylindrical holes 120a and 120b and the slits 150 and 151 constitute an integrated opening, and the opening has an opening shape whose entire circumference is closed.

  The interposition part 110 has a connecting part 152 formed between the slit 150 and the outer peripheral face 110a, and a connecting part 153 formed between the slit 151 (long cylindrical hole 120b) and the outer peripheral face 110b. ing. The left divided partition region 141 and the right divided partition region 142 are connected by two connecting portions 152 and 153. The connecting portions 152 and 153 are formed on the outer peripheral portion that is adjacent to the outer peripheral surfaces 110a and 110b of the interposition portion 110 and that are both ends of the interposition portion 110 in the longitudinal direction.

  When the undivided partition plate 104 shown in FIG. 10 is cut by the same method as in the first embodiment, the tool feed speed is increased in inverse proportion to the removal volume at the position where the slits 150 and 151 are formed. Can do. Further, since the connecting portions 152 and 153 are formed on the outer peripheral portion, the breakage of all the connecting portions 152 and 153 (that is, separation of the left divided partition plate region 141 and the right divided partition plate region 142) is cut. Can be simultaneously with the end timing. As a result, the positional deviation of the undivided partition plate 104 due to the cutting force at the time of cutting can be reduced, so that the surface properties of the cut surfaces of the left divided partition plate region 141 and the right divided partition plate region 142 can be made highly accurate. It becomes possible. In particular, in this example, since the connecting portions 152 and 153 are formed at both ends in the longitudinal direction of the interposition portion 110, the above-described effect can be obtained regardless of the relative feed direction of the cutting edge 200.

  As described above, in this embodiment, in addition to obtaining the same effects as those of the first embodiment, the surface properties of the cut surfaces of the left divided partition region 141 and the right divided partition region 142 are improved. Is possible.

Embodiment 4 FIG.
Next, a method for manufacturing a partition plate and a member for forming a partition plate according to Embodiment 4 of the present invention will be described. In the present embodiment, a partition plate manufacturing method and a partition plate forming member capable of reducing the running cost at the time of cutting will be described based on the configuration of the first embodiment. FIG. 11 is a diagram showing a schematic configuration of an undivided partition plate (partition plate forming member) 105 according to the present embodiment. FIG. 11A is a plan view showing a schematic configuration of the undivided partition plate 105, and FIG. 11B is a front view showing a schematic configuration of the undivided partition plate 105. In addition, about the component which has the same function and effect | action as the undivided partition plate 100 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, the undivided partition plate 105 includes a left divided partition plate region 141 that becomes the left divided partition plate 41 after the division, a right divided partition plate region 142 that becomes the right divided partition plate 42 after the division, and a left divided partition plate. There is an interposition part 110 that is interposed between the partition plate region 141 and the right partition plate region 142 and integrally connects the left partition plate region 141 and the right partition plate region 142. In the present embodiment, a pair of grooves 160 and 161 having an isosceles triangle shape (wedge shape) whose apexes face each other are formed on both surfaces (upper end surface 110g and lower end surface 110h) of the interposition part 110, respectively. ing. The grooves 160 and 161 extend from the outer peripheral surface 110a to the outer peripheral surface 110b of the interposition part 110 along the longitudinal direction of the interposition part 110 with the long cylindrical holes 120a and 120b interposed therebetween. A connecting portion 162 is formed between the vertices of the grooves 160 and 161. The thickness of the connecting portion 162 is, for example, less than half the thickness of the undivided partition plate 105.

  When cutting the undivided partition plate 105 shown in FIG. 11, a blade is applied to one or both of the grooves 160 and 161 to apply an impact. As a result, the undivided partition plate 105 breaks according to the fractured surface formed in the connecting portion 162 (in FIG. 11, the plane that becomes the fractured surface is indicated by an imaginary line L3), and the left divided partition plate 41 and the right divided partition plate It is divided into a partition plate 42. The undivided partition plate 105 of the present embodiment does not require a cutting allowance (that is, the interposition part 110 of the present embodiment is not removed in the cutting process), so that energy for removing the cutting allowance is unnecessary. Become. Therefore, the running cost required for cutting the undivided partition plate 105 can be reduced.

  As described above, in the present embodiment, in addition to obtaining the same effect as in the first embodiment, energy for removing the cutting allowance is unnecessary, so that the running required for cutting the undivided partition plate 105 is performed. Cost can be reduced.

  The partition plate according to each embodiment described above is formed into one part by a method such as powder metallurgy, press working, casting, etc., and then divided into a final part shape to be divided into two parts. Moreover, the partition plates of Embodiments 1 to 3 have an interposition part (connecting part) that is removed at the time of subsequent division. The interposition part has lands, chamfers, and slits with draft angles so that sharp edges can be formed later. Or an interposition part has a groove | channel for suppressing the tensile stress concerning a partition plate at the time of a cutting process. Thereby, the edge quality of a division | segmentation partition plate can be improved.

  Moreover, the manufacturing method of the partition plate which concerns on each embodiment includes the process of cutting an undivided partition plate according to an interposition part. In the cutting process, in order to suppress the tensile stress applied to the partition plate, a reference pad having an appropriate clearance from the cutting blade is used. Further, the partition plate manufacturing method according to Embodiment 4 divides an undivided partition plate into two divided partition plates by forming a groove that facilitates breakage due to impact in the interposed portion and breaking the interposed portion by impact. To do.

  In the above embodiment, a two-cylinder rotary compressor provided with two cylinders has been taken as an example. However, the present invention can also be applied to a rotary compressor provided with three or more cylinders.

  Further, the above embodiments and modifications can be implemented in combination with each other.

  DESCRIPTION OF SYMBOLS 1 Rotary compressor, 10 Compression mechanism part, 11 Main bearing, 12 Sub bearing, 21 Upper cylinder, 22 Upper rolling piston, 23 Upper vane, 24 Upper biasing means, 31 Lower cylinder, 32 Lower rolling piston, 33 Lower vane, 34 Lower urging means, 40 Partition plate, 41 Left split partition plate, 42 Right split partition plate, 41a, 42a Split surface, 41b, 42b, 110a, 110b Outer peripheral surface, 41c, 42c Bolt hole, 41d, 41e, 42d , 42e semi-cylindrical groove, 42f communication hole, 50 motor part, 51 stator, 52 rotor, 53 crankshaft, 54a upper eccentric part, 54b lower eccentric part, 55 intermediate shaft part, 60 sealed container, 61 suction pipe, 62 Discharge pipe, 100, 101, 102, 103, 104, 105 Undivided partition plate, 100a end face, 110 Existing part, 110c, 110d, 110e, 110f inner wall surface, 110g upper end surface, 110h lower end surface, 111 rectangular groove, 112 cutting allowance, 120a, 120b long cylindrical hole, 130, 131, 134, 135, 136, 137, 150 151, slit, 132, 133, 138, 139, 152, 153, 162 connecting part, 141 left divided partition area, 142 right divided partition area, 160, 161 groove, 200 cutting edge, 210 reference pad.

Claims (9)

Manufacture of a plate-like partition plate that is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein and is sandwiched between two cylinders to partition between two adjacent compression chambers A method,
An undivided partition plate comprising two divided partition plates arranged on the same plane and an intervening portion interposed between the two divided partition plates and integrally connecting the two divided partition plates is formed. A first step;
A second step of applying at least one of a predetermined surface treatment and heat treatment to the undivided partition plate;
A third step of removing the interposition part and dividing the undivided partition plate into the two divided partition plates;
The manufacturing method of the partition plate characterized by having. The third step is to divide the undivided partition plate into the two divided partition plates using a predetermined cutting blade while pressing the undivided partition plate against a reference pad.
The method for manufacturing a partition plate according to claim 1, wherein the reference pad is disposed up to a position where an appropriate clearance is obtained with respect to the cutting blade. Manufacture of a plate-like partition plate that is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein and is sandwiched between two cylinders to partition between two adjacent compression chambers A method,
Provided on both surfaces of the interposition part, two divisional partition plates arranged on the same plane, an intervening portion that is interposed between the two divisional partition plates and integrally connects the two divisional partition plates. A first step of forming an undivided partition plate comprising a pair of grooves having a triangular cross section extending along the longitudinal direction of the interposition part and having apexes facing each other;
A second step of applying at least one of a predetermined surface treatment and heat treatment to the undivided partition plate;
A third step of applying a blade to at least one of the pair of grooves, breaking the intermediate portion by applying an impact, and dividing the undivided partition plate into the two divided partition plates;
The manufacturing method of the partition plate characterized by having. In order to form a plate-like partition plate that is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein and is sandwiched between two cylinders to partition between two adjacent compression chambers A partition plate forming member,
Two divided partitions arranged on the same plane;
Intervening between the two divided partition plates, integrally connecting the two divided partition plates, and having an intervening portion removed when the two divided partition plates are divided,
The surfaces of the two divided partition plates and the interposition part are subjected to at least one of predetermined surface treatment and heat treatment,
The partition plate is formed by dividing the two divided partition plates in a later step and recombining the two divided partition plates in a later step of the step. Forming member. The partition plate forming member according to claim 4, wherein the interposition portion has a slit extending along a longitudinal direction of the interposition portion. The partition plate forming member according to claim 5, wherein the interposition portion has a connecting portion that connects the two divided partition plates on an outer peripheral portion. The partition plate forming member according to any one of claims 4 to 6, wherein the interposition portion has a surface groove extending along a longitudinal direction of the interposition portion. In order to form a plate-like partition plate that is used in a rotary compressor having a plurality of cylinders each having a compression chamber formed therein and is sandwiched between two cylinders to partition between two adjacent compression chambers A partition plate forming member,
Two divided partitions arranged on the same plane;
An intervening portion interposed between the two divided partition plates and integrally connecting the two divided partition plates;
A pair of grooves having a triangular cross section provided on both surfaces of the interposition part, extending along the longitudinal direction of the interposition part, and having apexes facing each other;
The surfaces of the two divided partition plates and the interposition part are subjected to at least one of predetermined surface treatment and heat treatment,
The partition plate is formed by dividing the two divided partition plates in a later step and recombining the two divided partition plates in a later step of the step. Forming member. A partition plate formed by dividing the partition plate forming member according to any one of claims 4 to 8 into the two divided partition plates and recombining the two divided partition plates. A rotary compressor characterized by having.

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