WO2022259412A1 - Coated-surface modification device and production method for rotary compressor - Google Patents

Coated-surface modification device and production method for rotary compressor Download PDF

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Publication number
WO2022259412A1
WO2022259412A1 PCT/JP2021/021898 JP2021021898W WO2022259412A1 WO 2022259412 A1 WO2022259412 A1 WO 2022259412A1 JP 2021021898 W JP2021021898 W JP 2021021898W WO 2022259412 A1 WO2022259412 A1 WO 2022259412A1
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WO
WIPO (PCT)
Prior art keywords
crankshaft
painted surface
painted
correcting device
correction tool
Prior art date
Application number
PCT/JP2021/021898
Other languages
French (fr)
Japanese (ja)
Inventor
哲也 平野
喬 秋山
真和 金子
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN202180098933.7A priority Critical patent/CN117412820A/en
Priority to JP2023526719A priority patent/JP7418664B2/en
Priority to PCT/JP2021/021898 priority patent/WO2022259412A1/en
Publication of WO2022259412A1 publication Critical patent/WO2022259412A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means

Definitions

  • This application relates to a manufacturing method for a painted surface correction device and a rotary compressor.
  • Sliding parts such as the crankshaft of a rotary compressor
  • Sliding parts are generally surface-treated to improve their slidability.
  • surface treatments there is a method of forming a film by painting, and in the process of painting, an operation is performed to prepare the painted surface by removing convex portions on the painted surface.
  • These protrusions are caused by dust in the coating environment, foreign substances in the coating liquid, and lumps of the coating.
  • the existence of such a convex portion causes deterioration of slidability and assembly error, resulting in a decrease in commercial value.
  • Sandpaper, a whetstone, or a tool such as that of Patent Document 1 is known as a tool for correcting such a painted surface.
  • the present invention has been made to solve the above-described problems, and provides a coated surface capable of efficiently and reliably removing convex portions without damaging portions of the painted surface of a crankshaft having no convex portions.
  • the purpose is to obtain a corrective device.
  • the painted surface correcting device disclosed in the present application includes a correcting tool and a pressing mechanism that presses the correcting tool while following the painted surface of the crankshaft. It consists of an arc-shaped concave portion larger than the concave portion and a groove portion formed on the concave portion and having a width smaller than the diameter of the painted portion. is characterized by removing the convex part of
  • the painted surface correcting device disclosed in the present application it is possible to efficiently and reliably remove the convex portion without damaging the non-convex portion of the painted surface of the crankshaft.
  • FIG. 1 is a cross-sectional view of a rotary compressor having a crankshaft, which is a workpiece of the painted surface correcting device according to Embodiment 1.
  • FIG. 1 is a schematic configuration diagram of a painted surface correcting device according to Embodiment 1;
  • FIG. 1 is a perspective view of a crankshaft that is a workpiece;
  • FIG. 2 is a side view of the painted surface correcting tool unit according to Embodiment 1;
  • FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4; 4 is a front cross-sectional view when the upper eccentric portion correction tool unit according to Embodiment 1 is pressed against the crankshaft;
  • FIG. 4 is a front cross-sectional view when the crankshaft is rotated and the phase is changed while the upper eccentric portion correction tool unit according to Embodiment 1 is being pressed against the crankshaft;
  • 1 is a front cross-sectional view of a correction tool according to Embodiment 1;
  • FIG. 4 is a front cross-sectional view when the correction tool according to Embodiment 1 is pressed against the upper eccentric portion;
  • FIG. FIG. 4 is a diagram showing surface photographs and cross-sectional shapes before and after the painted surface is processed by the painted surface correcting device according to the first embodiment;
  • FIG. 8 is a front view of a correction tool according to Embodiment 2;
  • FIG. 11 is a front view of a correction tool according to Embodiment 3;
  • FIG. 1 shows a rotary compressor 1 having a crankshaft 50, which is a workpiece of a painted surface correcting apparatus according to Embodiment 1.
  • the rotary compressor 1 is manufactured by arranging the crankshaft 50, which has a modified coating surface as will be described later, in the center. The operation of the rotary compressor 1 will be briefly described.
  • the crankshaft 50 is rotationally driven by the electric mechanism section 4 having the rotor 2 fixed to the crankshaft 50 and rotated by the electromagnetic force of the stator 3 .
  • the rolling pistons 6 fixed to the upper eccentric portion 53 and the lower eccentric portion 54 of the crankshaft 50 rotate along the inner peripheral surface of the cylinder block 5 .
  • a vane (not shown) sliding in contact with the outer peripheral surface of the rolling piston 6 divides the cylinder chamber in the cylinder block 5 into a suction chamber for sucking the refrigerant and a compression chamber for compressing the refrigerant.
  • Refrigerant is compressed by a compression mechanism portion 7 composed of a cylinder block 5, a rolling piston 6, and vanes.
  • the number of rolling pistons 6 is not limited to two, and a rotary compressor having one or three or more rolling pistons 6 may be used.
  • crankshaft 50 slides on a plurality of other parts, its surface is coated with a lubricating paint or the like in order to improve slidability.
  • a painted surface correcting device 100 for correcting the painted surface will be described.
  • FIG. 2 is a schematic configuration diagram of the painted surface correcting device 100 according to the first embodiment.
  • the painted surface correction device 100 includes a rotation support device 20 that rotatably supports a crankshaft 50 that is an object to be processed, and a rotation drive device 30 that rotates the crankshaft 50 . Further, an elevating device 40 that can be driven in a direction perpendicular to the axis of the crankshaft 50 is provided. A painted surface correction tool unit 60 for correction is attached.
  • the painted surface correction tool unit 60 is pressed against the crankshaft 50, and the rotation drive device 30 rotates the crankshaft 50, thereby correcting the painted surface of the crankshaft 50.
  • FIG. 3 is a perspective view of a crankshaft 50 that is a workpiece.
  • the crankshaft 50 has a main shaft portion 51, a subshaft portion 52, an uncoated shaft portion 55, which are coaxially provided, and an upper eccentric portion 53 and a lower eccentric portion which are provided on different axes parallel to the axis of the crankshaft 50. 54. Since the main shaft portion 51, the sub shaft portion 52, the upper eccentric portion 53, and the lower eccentric portion 54 slide against other parts, they are painted to improve their slidability. Protrusions on these surfaces affect assembly accuracy and adversely affect slidability, so correction processing is required to remove the protrusions.
  • an upper center hole 56 and a lower center hole 58 are formed at both ends of the crankshaft 50 for use in processing and for supplying oil.
  • a drive groove 57 is formed on the outer side of the upper center hole 56 .
  • the upper center hole 56 is used to engage the rotation support device 20, and the lower center hole 58 is used to engage the rotation drive device 30, thereby supporting the crankshaft 50 from both sides and rotating the drive groove 57. It is configured to rotate the crankshaft 50 by being attached to the drive portion of the drive device 30 .
  • the shape of the workpiece is not limited to the above.
  • the non-coated shaft portion 55 is gripped and rotated, it can be applied to a shape that does not have the upper center hole 56 and the drive groove 57 .
  • the outer diameter portion of the sub shaft portion 52 may be rotatably supported by a roller or the like.
  • FIG. 4 is a side view of the painted surface correction tool unit 60.
  • FIG. A main shaft portion correcting tool unit 61, a sub shaft portion correcting tool unit 62, an upper eccentric portion correcting tool unit 63, and a lower eccentric portion correcting tool unit 64 are attached to a unit base 65 and integrated.
  • the main shaft portion correction tool unit 61 is the main shaft portion 51 which is the painted portion
  • the sub shaft portion correction tool unit 62 is the sub shaft portion 52 which is the painted portion
  • the upper eccentric portion correction tool unit 63 is the painted portion.
  • the upper eccentric portion 53 and the lower eccentric portion correcting tool unit 64 are for processing the lower eccentric portion 54, which is a portion to be painted, and have the same basic configuration. Therefore, the correction tool unit 63 for the upper eccentric portion will be described below as a representative example of the coating portion.
  • FIG. 5 is a front cross-sectional view of the upper eccentric portion correction tool unit 63 taken along line AA in FIG.
  • the upper eccentric portion correction tool unit 63 is provided with a guide rail 71 .
  • This guide rail 71 is attached to the aforementioned unit base 65 .
  • a slide block 72 is attached to the surface opposite to the guide rail 71 attached to the unit base 65 so as to be movable along the guide rail 71 .
  • a slide base 73 that moves integrally is attached to the slide block 72 .
  • One end of a guide pin 74 is attached to the slide base 73
  • a correction tool base 75 is attached to the other end of the guide pin 74 via a linear bushing 76 .
  • a compression spring 77 engaged with the slide base 73 and the correcting tool base 75 is arranged around the guide pin, and biases the correcting tool base 75 and the slide base 73 so that they are spaced at a constant distance. When the gap is narrowed, the compression spring 77 generates a spring reaction force.
  • a fall prevention bolt 79 is fixed to the correction tool base 75, and the fall prevention bolt 79 penetrates a correction tool 80 for processing the painted surface and is formed so as to prevent the correction tool 80 from falling off.
  • the correction tool 80 is movably suspended along the drop prevention bolt 79 .
  • a spherical washer 78 passes through the drop prevention bolt 79 and is arranged between the correction tool 80 and the correction tool base 75 .
  • the operation of the painted surface correcting tool unit 60 configured as described above when correcting the painted surface of the crankshaft 50 will be described using the upper eccentric portion correcting tool unit 63 as a representative example.
  • the upper eccentric portion correcting tool unit 63 is lowered by the lifting device 40 , the correcting tool 80 comes into contact with the upper eccentric portion 53 of the crankshaft 50 .
  • the correction tool 80 Since the correction tool 80 is suspended by the drop prevention bolt 79, if the descent continues, the correction tool 80 follows the upper eccentric portion 53 and becomes parallel. As the descent continues, since the upper eccentric portion 53 is fixed, only the correction tool 80 moves upward along the fall prevention bolt 79, and the spherical washer 78 and the correction tool base 75 come into contact. As a result, the correction tool 80 follows the upper eccentric portion 53 and is pressed by the correction tool base 75 via the spherical washer 78 .
  • the slide base 73 descends so that the guide pin 74 follows the linear bushing 76 while the correcting tool base 75 maintains its position.
  • a spring reaction force is generated by compressing a compression spring 77 arranged so as to be sandwiched between the correction tool base 75 and the slide base 73 .
  • the upper eccentric portion correcting tool unit 63 is further lowered until this spring reaction force reaches a predetermined value. After the spring reaction force reaches a predetermined value, the crankshaft 50 is rotated by the rotary drive device 30 while the position of the upper eccentric portion correction tool unit 63 is held.
  • FIG. 7 is a front cross-sectional view when the crankshaft 50 is rotated while the upper eccentric portion correction tool unit 63 is pressed against the crankshaft 50 and the phase changes.
  • the position of the central axis changes because the central axis of the upper eccentric portion 53 is not coaxial with the rotation axis.
  • the correction tool base 75 moves up and down along the guide pin 74 and the slide base 73 attached to the slide block 72 moves left and right along the guide rail 71 .
  • the correction tool 80 follows the rotation of the crankshaft 50 while being pressed against the upper eccentric portion 53 by the spring reaction force of the compression spring 77 .
  • the upper eccentric portion correction tool unit 63 has described the configuration of the tool unit and the movement during correction machining.
  • the main shaft correcting tool unit 61, the counter shaft correcting tool unit 62, and the lower eccentric correcting tool unit 64 may have the same configuration, but the main shaft correcting tool unit 61 and the counter shaft correcting tool Regarding the unit 62, if the rotation axis of the crankshaft 50 and the central axes of the main shaft portion 51 and the sub shaft portion 52, which are the machining portions of the respective tool units, are made to coincide with each other, the unit 62 can be driven during machining. Therefore, the guide rail 71 and the slide block 72 are unnecessary.
  • FIG. 8 is a front view of the correction tool 80.
  • FIG. A large circle portion 82 and a small circle portion 83 are provided on a body 81 using a material such as tool steel that is much harder than the paint, and the large circle portion 82 and the small circle portion 83 form a convex coating surface.
  • An edge portion 84 is formed for modifying or removing a portion.
  • the small circular portion 83 is provided in the present embodiment, the groove does not have to be arc-shaped as long as the groove can form the edge portion 84 .
  • the large circle portion 82 has a diameter larger than the diameter of the upper eccentric portion 53 to be machined, and the small circle portion 83 has a diameter smaller than the diameter of the upper eccentric portion 53 and is provided parallel to the central axis of the large circle portion 82. It is By forming each portion with high precision, the edge portion 84 is also formed parallel to each central axis.
  • the surface of the large circle portion 82 is finished to a very smooth surface with a ten-point average roughness Rz of 1.0 ⁇ m or less. It is sufficient that the crankshaft 50 is not scratched when it is slid. For example, it is known that the slidability of the crankshaft 50 can be improved by providing a fine texture to the large circular portion 82, and there is no problem in exceeding Rz 1.0 ⁇ m by such processing.
  • the large circle portion 82 is finished after the small circle portion 83 is machined so that burrs on the edge portion 84 do not occur in the radial direction of the large circle portion 82 . Further, the length of the correction tool 80 formed with the large circle portion 82 and the small circle portion 83 in the depth direction of the paper surface is set longer than the axial length of the upper eccentric portion 53 .
  • FIG. 9 is a front cross-sectional view when the correction tool 80 according to Embodiment 1 is pressed against the upper eccentric portion 53.
  • the diameter of the large circle portion 82 is larger than the diameter of the upper eccentric portion 53, which is the painted portion, and the small circular portion 83 is smaller than the diameter of the upper eccentric portion 53, which is the painted portion.
  • the edge portion 84 formed by the large circle portion 82 and the small circle portion 83 and the upper eccentric portion 53 are brought into close contact with each other. If the upper eccentric portion 53 has a convex portion 90 on the painted surface, it may occur that the edge portion 84 cannot be in close contact momentarily. , the edge portion 84 and the upper eccentric portion 53 are brought into close contact with each other as shown in FIG. 8 by rotating the crankshaft 50 .
  • the convex portion 90 of the painted surface comes into contact with the edge portion 84 and is scraped off.
  • the painted surface other than the convex portion 90 is not damaged because it comes into contact with the smoothly finished large circular portion 82 .
  • the large circular portion 82 and the upper eccentric portion 53 are in contact with each other in the concave and convex shapes, the stress at the contact portion is small, and the damage is less likely to occur.
  • the length of the correction tool 80 in the depth direction is set longer than the axial length of the upper eccentric portion 53, the entire coated surface of the upper eccentric portion 53 is corrected by rotating the crankshaft 50 one or more times. can do.
  • the length of the correction tool 80 in the depth direction may be shorter than the axial length of the upper eccentric portion 53 as long as it is equal to or greater than the length of the portion requiring correction.
  • FIGS. 10A and 10B are photographs of the surface and cross-sectional shape before and after the painted surface of the crankshaft 50 is processed by the painted surface correcting device according to the first embodiment.
  • the horizontal axis of the drawing showing the cross-sectional shape represents the dimensionless value of the axial length of the coated surface
  • the vertical axis represents the dimensionless value of the coated surface height.
  • the correction tool 80 having a groove such as a circular arc larger than the diameter of the painted portion and a small circular portion parallel thereto and having a width smaller than the diameter of the painted portion mimics the crankshaft 50, which is the workpiece. Then, the crankshaft 50 is rotated while being driven so as to be driven, so that the projection 90 can be efficiently and surely removed without damaging the non-projection part of the coated surface of the crankshaft 50. ⁇ Here, it is desirable that the groove of the correction tool 80 is parallel to the circular arc, but even if it is not parallel, if the edge portion 84 can come into contact with the crankshaft 50, it is possible to remove the convex portion of the painted surface. .
  • Embodiment 2 As in the first embodiment, a correction tool 80 having a large circular arc portion 82 that is an arc larger than the diameter of the painted portion and a small circular portion 83 that is parallel to the arc and has a width smaller than the diameter of the painted portion is used.
  • the crankshaft 50 which is an object, is pressed so as to be driven while following the crankshaft 50, and the crankshaft 50 is rotated.
  • a tapered portion 86 that smoothly connects from the large circle portion 82 of the correction tool 80 to the end face portion 87 may be provided.
  • Embodiment 3 As in the first embodiment, a correction tool 80 having a large circular arc portion 82 that is larger than the diameter of the painted portion and a groove that is parallel to it and has a width smaller than the diameter of the painted portion is mounted on the crankshaft, which is the workpiece.
  • the crankshaft 50 is rotated while following the 50 and pressed so as to be driven.
  • the groove of the correction tool 80 may be formed like a rectangular portion 88 as shown in FIG. With such a configuration, the angle of the contact surface becomes a right angle when removing the convex portion 90 on the coated surface. This corresponds to setting the rake angle of a cutting tool to 0°, and can improve sharpness compared to grooves formed by the small circular portions 83, and can improve the removability of convex portions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A coated-surface modification device that is characterized by comprising a modification tool (80) and a pressing mechanism (60) that presses the modification tool (80) such that the modification tool (80) conforms to a coated surface of a crankshaft (50). The coated-surface modification device is also characterized in that a cross-section of the modification tool (80) that is perpendicular to the axis of the crankshaft (50) comprises an arc-shaped recessed part (82) that is larger than the diameter of a coated section and groove parts (83, 88) that are formed in the recessed part (82) and are narrower than the diameter of the coated section. The coated-surface modification device is also characterized in that, while the crankshaft (50) is rotated, protruding parts (90) of the coated surface are removed by edge parts (84) formed at the boundaries between the recessed part (82) and the groove parts (83, 88).

Description

塗装面修正装置およびロータリ圧縮機の製造方法Coated surface correction device and rotary compressor manufacturing method
　本願は、塗装面修正装置およびロータリ圧縮機の製造方法に関するものである。 This application relates to a manufacturing method for a painted surface correction device and a rotary compressor.
　ロータリ圧縮機のクランクシャフトなど、摺動する部品には、一般的に摺動性を高めるために表面処理がされている。表面処理の中には塗装によって成膜するものがあり、塗装を行う工程では、塗装面上の凸部を除去して塗装面を整える作業が行われている。この凸部は、塗装環境中のほこり、塗料液中の異物および塗料のかたまりに起因して生じるものである。このような凸部があると、摺動性の低下および組立誤差の原因となり、商品価値が低下する原因となる。 　Sliding parts, such as the crankshaft of a rotary compressor, are generally surface-treated to improve their slidability. Among surface treatments, there is a method of forming a film by painting, and in the process of painting, an operation is performed to prepare the painted surface by removing convex portions on the painted surface. These protrusions are caused by dust in the coating environment, foreign substances in the coating liquid, and lumps of the coating. The existence of such a convex portion causes deterioration of slidability and assembly error, resulting in a decrease in commercial value.
　このような塗装面の修正作業を行う工具には紙やすり、砥石、もしくは特許文献１のような工具が知られている。 Sandpaper, a whetstone, or a tool such as that of Patent Document 1 is known as a tool for correcting such a painted surface.
特許第４６７６３４９号公報Japanese Patent No. 4676349
　これら従来の工具は、凸部に対して部分的に押し当てながらこすり取るものであった。したがって、凸部を確認する必要があるため、作業性を向上しにくいという課題があった。また、凸部を確認する作業を省略するために全面を加工する場合には、正常な面も傷つけて品質を損なってしまうという課題があった。 These conventional tools were used to scrape while partially pressing against the convex portion. Therefore, since it is necessary to confirm the convex portion, there is a problem that it is difficult to improve the workability. Moreover, when processing the entire surface in order to omit the work of confirming the convex portions, there is a problem that the normal surface is also damaged and the quality is impaired.
　本願は上記のような課題を解決するためになされたものであり、クランクシャフトの塗装面の凸部が無い箇所を傷つけることなく、凸部を効率的にかつ確実に除去することができる塗装面修正装置を得ることを目的としている。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a coated surface capable of efficiently and reliably removing convex portions without damaging portions of the painted surface of a crankshaft having no convex portions. The purpose is to obtain a corrective device.
　本願に開示される塗装面修正装置は、修正工具、修正工具をクランクシャフトの塗装面に倣わせながら押し付ける押し付け機構を備え、修正工具は、クランクシャフトの軸に垂直な断面が、塗装箇所の径よりも大きな円弧状の凹部と凹部上に形成され塗装箇所の径よりも小さな幅の溝部とからなり、塗装面を移動させることにより、凹部と溝部との境界に形成されるエッジ部で塗装面の凸部を除去することを特徴とする。 The painted surface correcting device disclosed in the present application includes a correcting tool and a pressing mechanism that presses the correcting tool while following the painted surface of the crankshaft. It consists of an arc-shaped concave portion larger than the concave portion and a groove portion formed on the concave portion and having a width smaller than the diameter of the painted portion. is characterized by removing the convex part of
　本願に開示される塗装面修正装置よれば、クランクシャフトの塗装面の凸部が無い箇所を傷つけることなく、凸部を効率的にかつ確実に除去することができる。 According to the painted surface correcting device disclosed in the present application, it is possible to efficiently and reliably remove the convex portion without damaging the non-convex portion of the painted surface of the crankshaft.
実施の形態１に係る塗装面修正装置の被加工物であるクランクシャフトを備えたロータリ圧縮機の断面図である。1 is a cross-sectional view of a rotary compressor having a crankshaft, which is a workpiece of the painted surface correcting device according to Embodiment 1. FIG. 実施の形態１に係る塗装面修正装置の概略構成図である。1 is a schematic configuration diagram of a painted surface correcting device according to Embodiment 1; FIG. 被加工物であるクランクシャフトの斜視図である。1 is a perspective view of a crankshaft that is a workpiece; FIG. 実施の形態１に係る塗装面修正工具ユニットの側面図である。FIG. 2 is a side view of the painted surface correcting tool unit according to Embodiment 1; 図４におけるＡ―Ａ断面図である。FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4; 実施の形態１に係る上側偏心部用修正工具ユニットがクランクシャフトに押し付けられたときの正面断面図である。4 is a front cross-sectional view when the upper eccentric portion correction tool unit according to Embodiment 1 is pressed against the crankshaft; FIG. 実施の形態１に係る上側偏心部用修正工具ユニットがクランクシャフトに押し付けられた状態で、クランクシャフトが回転され位相が変化したときの正面断面図である。FIG. 4 is a front cross-sectional view when the crankshaft is rotated and the phase is changed while the upper eccentric portion correction tool unit according to Embodiment 1 is being pressed against the crankshaft; 実施の形態１に係る修正工具の正面断面図である。1 is a front cross-sectional view of a correction tool according to Embodiment 1; FIG. 実施の形態１に係る修正工具が上側偏心部に押し付けられた時の正面断面図である。4 is a front cross-sectional view when the correction tool according to Embodiment 1 is pressed against the upper eccentric portion; FIG. 実施の形態１に係る塗装面修正装置で塗装面を加工する前後の表面写真と断面形状を表した図である。FIG. 4 is a diagram showing surface photographs and cross-sectional shapes before and after the painted surface is processed by the painted surface correcting device according to the first embodiment; 実施の形態２に係る修正工具の正面図である。FIG. 8 is a front view of a correction tool according to Embodiment 2; 実施の形態３に係る修正工具の正面図である。FIG. 11 is a front view of a correction tool according to Embodiment 3;
　以下、本願に係る塗装面修正装置の好適な実施の形態について、図面を参照して説明する。なお、同一内容および相当部については同一符号を配し、その詳しい説明は省略する。以降の実施形態も同様に、同一符号を付した構成について重複した説明は省略する。 Preferred embodiments of the painted surface correcting device according to the present application will be described below with reference to the drawings. The same reference numerals are assigned to the same contents and corresponding parts, and detailed description thereof will be omitted. In the following embodiments as well, redundant descriptions of the configurations denoted by the same reference numerals will be omitted.
実施の形態１．
　図１は、実施の形態１に係る塗装面修正装置の被加工物であるクランクシャフト５０を備えたロータリ圧縮機１である。後述するように塗装面を修正したクランクシャフト５０を、中心部に配置してロータリ圧縮機１を製造する。ロータリ圧縮機１の動作を簡単に説明する。クランクシャフト５０に固定され、固定子３の電磁力によって回転する回転子２を有する電動機構部４によってクランクシャフト５０が回転駆動される。これにより、クランクシャフト５０の上側偏心部５３および下側偏心部５４にそれぞれ固定されたローリングピストン６が、シリンダブロック５の内周面に沿って回転する。ローリングピストン６の外周面に接触して摺動するベーン（図示せず）が、シリンダブロック５内のシリンダ室を、冷媒を吸入する吸入室と、冷媒を圧縮する圧縮室とに仕切る。シリンダブロック５、ローリングピストン６、およびベーンで構成される圧縮機構部７により冷媒を圧縮する。なお、ローリングピストンは２個とは限らず、１個又は３個以上のローリングピストン６を有するロータリ圧縮機でもよい。 Embodiment 1.
FIG. 1 shows a rotary compressor 1 having a crankshaft 50, which is a workpiece of a painted surface correcting apparatus according to Embodiment 1. As shown in FIG. The rotary compressor 1 is manufactured by arranging the crankshaft 50, which has a modified coating surface as will be described later, in the center. The operation of the rotary compressor 1 will be briefly described. The crankshaft 50 is rotationally driven by the electric mechanism section 4 having the rotor 2 fixed to the crankshaft 50 and rotated by the electromagnetic force of the stator 3 . As a result, the rolling pistons 6 fixed to the upper eccentric portion 53 and the lower eccentric portion 54 of the crankshaft 50 rotate along the inner peripheral surface of the cylinder block 5 . A vane (not shown) sliding in contact with the outer peripheral surface of the rolling piston 6 divides the cylinder chamber in the cylinder block 5 into a suction chamber for sucking the refrigerant and a compression chamber for compressing the refrigerant. Refrigerant is compressed by a compression mechanism portion 7 composed of a cylinder block 5, a rolling piston 6, and vanes. The number of rolling pistons 6 is not limited to two, and a rotary compressor having one or three or more rolling pistons 6 may be used.
　クランクシャフト５０は、複数の他の部品と摺動するものであるため、摺動性を高めるため表面に潤滑性塗料などで塗装（コーティング）が施されている。この塗装面を修正する塗装面修正装置１００を説明する。 Since the crankshaft 50 slides on a plurality of other parts, its surface is coated with a lubricating paint or the like in order to improve slidability. A painted surface correcting device 100 for correcting the painted surface will be described.
　図２は、実施の形態１に係る塗装面修正装置１００の概略構成図である。塗装面修正装置１００は、被加工対象物であるクランクシャフト５０を回転自在に支持する回転支持装置２０と、クランクシャフト５０を回転駆動させるための回転駆動装置３０を備えている。また、クランクシャフト５０の軸に対して直交する方向に駆動可能な昇降装置４０が備えられており、昇降装置４０は筐体１０に固定され、昇降装置の先端にはクランクシャフト５０の塗装面を修正するための塗装面修正工具ユニット６０が取り付けられている。 FIG. 2 is a schematic configuration diagram of the painted surface correcting device 100 according to the first embodiment. The painted surface correction device 100 includes a rotation support device 20 that rotatably supports a crankshaft 50 that is an object to be processed, and a rotation drive device 30 that rotates the crankshaft 50 . Further, an elevating device 40 that can be driven in a direction perpendicular to the axis of the crankshaft 50 is provided. A painted surface correction tool unit 60 for correction is attached.
　昇降装置４０を駆動することによって、塗装面修正工具ユニット６０をクランクシャフト５０に押しつけ、回転駆動装置３０によってクランクシャフト５０を回転させることでクランクシャフト５０の塗装面を修正する構成となっている。 By driving the lifting device 40, the painted surface correction tool unit 60 is pressed against the crankshaft 50, and the rotation drive device 30 rotates the crankshaft 50, thereby correcting the painted surface of the crankshaft 50.
　図３は、被加工物であるクランクシャフト５０の斜視図である。クランクシャフト５０は、同軸上に設けられた主軸部５１、副軸部５２、非塗装軸部５５、クランクシャフト５０の軸と平行で異なる軸上に設けられた上側偏心部５３および下側偏心部５４からなる。主軸部５１、副軸部５２、上側偏心部５３、および下側偏心部５４は、他の部品と摺動する箇所であるため、摺動性を高めるための塗装がなされている。これらの面に凸部があると組立精度に影響したり、摺動性に悪影響を及ぼしたりすることから、凸部を除去する修正加工が必要となる。 FIG. 3 is a perspective view of a crankshaft 50 that is a workpiece. The crankshaft 50 has a main shaft portion 51, a subshaft portion 52, an uncoated shaft portion 55, which are coaxially provided, and an upper eccentric portion 53 and a lower eccentric portion which are provided on different axes parallel to the axis of the crankshaft 50. 54. Since the main shaft portion 51, the sub shaft portion 52, the upper eccentric portion 53, and the lower eccentric portion 54 slide against other parts, they are painted to improve their slidability. Protrusions on these surfaces affect assembly accuracy and adversely affect slidability, so correction processing is required to remove the protrusions.
　また、クランクシャフトの５０の両端には加工に用いたり油を供給したりするための上側中心穴５６と下側中心穴５８が形成されている。さらに上側中心穴５６の外形側にはドライブ溝５７が形成されている。上側中心穴５６を利用して回転支持装置２０に係合させ、下側中心穴５８を利用して回転駆動装置３０に係合させることでクランクシャフト５０を両側から支持し、ドライブ溝５７を回転駆動装置３０の駆動部に取り付けることによりクランクシャフト５０を回転させる構成としている。 In addition, an upper center hole 56 and a lower center hole 58 are formed at both ends of the crankshaft 50 for use in processing and for supplying oil. Further, a drive groove 57 is formed on the outer side of the upper center hole 56 . The upper center hole 56 is used to engage the rotation support device 20, and the lower center hole 58 is used to engage the rotation drive device 30, thereby supporting the crankshaft 50 from both sides and rotating the drive groove 57. It is configured to rotate the crankshaft 50 by being attached to the drive portion of the drive device 30 .
　しかし、被加工物の形状を前述のものに限定するものではない。例えば、非塗装軸部５５を把持して回転させる方式とすれば、上側中心穴５６およびドライブ溝５７を有さない形状のものにも適用可能である。また、下側中心穴５８が無いような場合においても、副軸部５２の外径部をローラーなどで回転自在に支持してもよい。 However, the shape of the workpiece is not limited to the above. For example, if the non-coated shaft portion 55 is gripped and rotated, it can be applied to a shape that does not have the upper center hole 56 and the drive groove 57 . Also, even if the lower center hole 58 is not provided, the outer diameter portion of the sub shaft portion 52 may be rotatably supported by a roller or the like.
　図４は、塗装面修正工具ユニット６０の側面図である。主軸部用修正工具ユニット６１、副軸部用修正工具ユニット６２、上側偏心部用修正工具ユニット６３、下側偏心部用修正工具ユニット６４がユニットベース６５に取り付けられて一体となったものである。主軸部用修正工具ユニット６１は、塗装箇所である主軸部５１、副軸部用修正工具ユニット６２は、塗装箇所である副軸部５２、上側偏心部用修正工具ユニット６３は、塗装箇所である上側偏心部５３、下側偏心部用修正工具ユニット６４は、塗装箇所である下側偏心部５４をそれぞれ加工するためのものであり、基本的な構成はいずれも同じである。従って、上側偏心部用修正工具ユニット６３を塗装箇所の代表例として以下に説明する。 4 is a side view of the painted surface correction tool unit 60. FIG. A main shaft portion correcting tool unit 61, a sub shaft portion correcting tool unit 62, an upper eccentric portion correcting tool unit 63, and a lower eccentric portion correcting tool unit 64 are attached to a unit base 65 and integrated. . The main shaft portion correction tool unit 61 is the main shaft portion 51 which is the painted portion, the sub shaft portion correction tool unit 62 is the sub shaft portion 52 which is the painted portion, and the upper eccentric portion correction tool unit 63 is the painted portion. The upper eccentric portion 53 and the lower eccentric portion correcting tool unit 64 are for processing the lower eccentric portion 54, which is a portion to be painted, and have the same basic configuration. Therefore, the correction tool unit 63 for the upper eccentric portion will be described below as a representative example of the coating portion.
　図５は、上側偏心部用修正工具ユニット６３の図４におけるＡ―Ａ正面断面図である。上側偏心部用修正工具ユニット６３には、ガイドレール７１が備えられている。このガイドレール７１は前述のユニットベース６５に取り付けられる。ユニットベース６５に取り付けられたガイドレール７１の反対側の面には、スライドブロック７２が、ガイドレール７１に沿って移動可能に取り付けられる。スライドブロック７２には、一体となって移動するスライドベース７３がとりつけられる。スライドベース７３には、ガイドピン７４の一端が取り付けられ、ガイドピン７４の他端部には、リニアブッシュ７６を介して修正工具ベース７５が取付けられる。ガイドピンの周囲に、スライドベース７３と修正工具ベース７５に係合された圧縮ばね７７が配置され、修正工具ベース７５とスライドベース７３とが一定間隔となるように付勢されており、一定の間隔より狭まると、圧縮ばね７７に、ばね反力が生じる。 FIG. 5 is a front cross-sectional view of the upper eccentric portion correction tool unit 63 taken along line AA in FIG. The upper eccentric portion correction tool unit 63 is provided with a guide rail 71 . This guide rail 71 is attached to the aforementioned unit base 65 . A slide block 72 is attached to the surface opposite to the guide rail 71 attached to the unit base 65 so as to be movable along the guide rail 71 . A slide base 73 that moves integrally is attached to the slide block 72 . One end of a guide pin 74 is attached to the slide base 73 , and a correction tool base 75 is attached to the other end of the guide pin 74 via a linear bushing 76 . A compression spring 77 engaged with the slide base 73 and the correcting tool base 75 is arranged around the guide pin, and biases the correcting tool base 75 and the slide base 73 so that they are spaced at a constant distance. When the gap is narrowed, the compression spring 77 generates a spring reaction force.
　修正工具ベース７５に落下防止ボルト７９が固定され、落下防止ボルト７９は、塗装面を加工するための修正工具８０を貫通するとともに、修正工具８０が抜け落ちないように形成されており、これにより、修正工具８０は、落下防止ボルト７９に沿って移動可能に吊るされた状態となる。球面座金７８が落下防止ボルト７９を貫通し、修正工具８０と修正工具ベース７５との間に配置されている。 A fall prevention bolt 79 is fixed to the correction tool base 75, and the fall prevention bolt 79 penetrates a correction tool 80 for processing the painted surface and is formed so as to prevent the correction tool 80 from falling off. The correction tool 80 is movably suspended along the drop prevention bolt 79 . A spherical washer 78 passes through the drop prevention bolt 79 and is arranged between the correction tool 80 and the correction tool base 75 .
　以上のような構成とした塗装面修正工具ユニット６０が、クランクシャフト５０の塗装面を修正加工する際の動作について、上側偏心部用修正工具ユニット６３を代表例として説明する。
　昇降装置４０によって、上側偏心部用修正工具ユニット６３が降下すると、修正工具８０がクランクシャフト５０の上側偏心部５３に接触する。 The operation of the painted surface correcting tool unit 60 configured as described above when correcting the painted surface of the crankshaft 50 will be described using the upper eccentric portion correcting tool unit 63 as a representative example.
When the upper eccentric portion correcting tool unit 63 is lowered by the lifting device 40 , the correcting tool 80 comes into contact with the upper eccentric portion 53 of the crankshaft 50 .
　修正工具８０は落下防止ボルト７９により吊るされた状態となっているため、そのまま降下を続けると、修正工具８０が上側偏心部５３に倣うようにして平行な状態となる。さらに降下を続けると、上側偏心部５３は固定されているため、落下防止ボルト７９に沿って修正工具８０のみが上方に移動することにより、球面座金７８と修正工具ベース７５が当接する。これにより、修正工具８０が、上側偏心部５３に倣った状態のまま、球面座金７８を介して修正工具ベース７５によって押圧された状態となる。 Since the correction tool 80 is suspended by the drop prevention bolt 79, if the descent continues, the correction tool 80 follows the upper eccentric portion 53 and becomes parallel. As the descent continues, since the upper eccentric portion 53 is fixed, only the correction tool 80 moves upward along the fall prevention bolt 79, and the spherical washer 78 and the correction tool base 75 come into contact. As a result, the correction tool 80 follows the upper eccentric portion 53 and is pressed by the correction tool base 75 via the spherical washer 78 .
　その状態からさらに降下を続けると、修正工具ベース７５が、位置を保ったまま、リニアブッシュ７６にガイドピン７４が沿うようにして、スライドベース７３が降下する。この時、図６に示すように、修正工具ベース７５とスライドベース７３に挟まれるように配置された圧縮ばね７７が圧縮されることにより、ばね反力が生じる。このばね反力が予め定められた値となるまで上側偏心部用修正工具ユニット６３をさらに降下させる。ばね反力が予め定められた値となった後は、上側偏心部用修正工具ユニット６３の位置を保持した状態で、回転駆動装置３０によってクランクシャフト５０を回転させる。 If it continues to descend from that state, the slide base 73 descends so that the guide pin 74 follows the linear bushing 76 while the correcting tool base 75 maintains its position. At this time, as shown in FIG. 6, a spring reaction force is generated by compressing a compression spring 77 arranged so as to be sandwiched between the correction tool base 75 and the slide base 73 . The upper eccentric portion correcting tool unit 63 is further lowered until this spring reaction force reaches a predetermined value. After the spring reaction force reaches a predetermined value, the crankshaft 50 is rotated by the rotary drive device 30 while the position of the upper eccentric portion correction tool unit 63 is held.
　図７は、上側偏心部用修正工具ユニット６３がクランクシャフト５０に押し付けられた状態で、クランクシャフト５０が回転され、位相が変化したときの正面断面図である。クランクシャフト５０が回転すると、上側偏心部５３の中心軸が回転軸と同軸上にないため、中心軸の位置が変化する。この中心軸の位置の動きにあわせて、修正工具ベース７５がガイドピン７４にそって上下に動き、スライドブロック７２に取り付けられたスライドベース７３がガイドレール７１にそって左右に動く。このように、修正工具８０が上側偏心部５３に圧縮ばね７７のばね反力により押し付けられた状態のまま、クランクシャフト５０の回転にあわせて従動する。 FIG. 7 is a front cross-sectional view when the crankshaft 50 is rotated while the upper eccentric portion correction tool unit 63 is pressed against the crankshaft 50 and the phase changes. When the crankshaft 50 rotates, the position of the central axis changes because the central axis of the upper eccentric portion 53 is not coaxial with the rotation axis. In accordance with the movement of the position of the central axis, the correction tool base 75 moves up and down along the guide pin 74 and the slide base 73 attached to the slide block 72 moves left and right along the guide rail 71 . Thus, the correction tool 80 follows the rotation of the crankshaft 50 while being pressed against the upper eccentric portion 53 by the spring reaction force of the compression spring 77 .
　以上のように、上側偏心部用修正工具ユニット６３で工具ユニットの構成と修正加工中の動きについて述べた。主軸部用修正工具ユニット６１、副軸部用修正工具ユニット６２、下側偏心部用修正工具ユニット６４も同様の構成とすればよいが、主軸部用修正工具ユニット６１と副軸部用修正工具ユニット６２について、クランクシャフト５０の回転軸とそれぞれの工具ユニットの加工部位である主軸部５１および副軸部５２の中心軸が一致するように精度よく作られている場合には、加工中に従動する必要がないため、ガイドレール７１およびスライドブロック７２は不要である。 As described above, the upper eccentric portion correction tool unit 63 has described the configuration of the tool unit and the movement during correction machining. The main shaft correcting tool unit 61, the counter shaft correcting tool unit 62, and the lower eccentric correcting tool unit 64 may have the same configuration, but the main shaft correcting tool unit 61 and the counter shaft correcting tool Regarding the unit 62, if the rotation axis of the crankshaft 50 and the central axes of the main shaft portion 51 and the sub shaft portion 52, which are the machining portions of the respective tool units, are made to coincide with each other, the unit 62 can be driven during machining. Therefore, the guide rail 71 and the slide block 72 are unnecessary.
　クランクシャフト５０の塗装面を修正するための修正工具８０について、さらに詳細を説明する。
　図８は、修正工具８０の正面図である。工具鋼などの塗料よりもはるかに硬質な材料を用いたボディ８１に対して、大円部８２と小円部８３が設けられ、大円部８２と小円部８３とで、塗装面の凸部を修正または除去するためのエッジ部８４を形成している。なお、本実施の形態では、小円部８３を設けたが、エッジ部８４を形成できる溝であれば、円弧状である必要はない。 Further details of the correction tool 80 for correcting the painted surface of the crankshaft 50 will be described.
FIG. 8 is a front view of the correction tool 80. FIG. A large circle portion 82 and a small circle portion 83 are provided on a body 81 using a material such as tool steel that is much harder than the paint, and the large circle portion 82 and the small circle portion 83 form a convex coating surface. An edge portion 84 is formed for modifying or removing a portion. Although the small circular portion 83 is provided in the present embodiment, the groove does not have to be arc-shaped as long as the groove can form the edge portion 84 .
また、落下防止ボルト７９が貫通するボルト通し穴８５を備えている。大円部８２は加工対象である上側偏心部５３の径よりも大きな径としており、小円部８３は上側偏心部５３の径よりも小さな径で、大円部８２の中心軸に平行に設けられている。それぞれの部分を高精度に形成することによって、エッジ部８４もそれぞれの中心軸に平行に形成される。 It also has a bolt through hole 85 through which the fall prevention bolt 79 passes. The large circle portion 82 has a diameter larger than the diameter of the upper eccentric portion 53 to be machined, and the small circle portion 83 has a diameter smaller than the diameter of the upper eccentric portion 53 and is provided parallel to the central axis of the large circle portion 82. It is By forming each portion with high precision, the edge portion 84 is also formed parallel to each central axis.
　本実施の形態では、大円部８２の表面は十点平均粗さＲｚ１．０μｍ以下の非常になめらかな面に仕上げられているが、必ずしもＲｚ１．０μｍ以下である必要はなく、修正工具８０とクランクシャフト５０を摺動させた時に傷がつかないようになっていれば良い。例えば、微細なテクスチャを大円部８２に設けることでクランクシャフト５０の摺動性を向上できることが知られており、そのような加工によってＲｚ１．０μｍを超過することは問題とならない。 In the present embodiment, the surface of the large circle portion 82 is finished to a very smooth surface with a ten-point average roughness Rz of 1.0 μm or less. It is sufficient that the crankshaft 50 is not scratched when it is slid. For example, it is known that the slidability of the crankshaft 50 can be improved by providing a fine texture to the large circular portion 82, and there is no problem in exceeding Rz 1.0 μm by such processing.
　小円部８３を加工した後に、大円部８２を仕上げるなどして、エッジ部８４に生じるバリが大円部８２の径方向に発生しないようにしている。また、大円部８２および小円部８３が形成された修正工具８０の紙面奥行き方向の長さは、上側偏心部５３の軸方向長さよりも長く設定されている。 The large circle portion 82 is finished after the small circle portion 83 is machined so that burrs on the edge portion 84 do not occur in the radial direction of the large circle portion 82 . Further, the length of the correction tool 80 formed with the large circle portion 82 and the small circle portion 83 in the depth direction of the paper surface is set longer than the axial length of the upper eccentric portion 53 .
　図９は、実施の形態１に係る修正工具８０が上側偏心部５３に押し付けられた時の正面断面図である。大円部８２の径は、塗装箇所である上側偏心部５３の径よりも大きく、小円部８３は、塗装箇所である上側偏心部５３の径よりも小さく形成されているため、修正工具８０を上側偏心部５３に押し付けると大円部８２と小円部８３によって形成されるエッジ部８４と上側偏心部５３が密着された状態となる。上側偏心部５３に塗装面の凸部９０があるような場合には、瞬間的にエッジ部８４で密着できないようなことが起こりうるが、小円部８３の開口幅が塗装面の凸部９０の幅よりも大きく作られていれば、クランクシャフト５０を回転させることで図８に示したようなエッジ部８４と上側偏心部５３が密着された状態となる。 FIG. 9 is a front cross-sectional view when the correction tool 80 according to Embodiment 1 is pressed against the upper eccentric portion 53. FIG. The diameter of the large circle portion 82 is larger than the diameter of the upper eccentric portion 53, which is the painted portion, and the small circular portion 83 is smaller than the diameter of the upper eccentric portion 53, which is the painted portion. is pressed against the upper eccentric portion 53, the edge portion 84 formed by the large circle portion 82 and the small circle portion 83 and the upper eccentric portion 53 are brought into close contact with each other. If the upper eccentric portion 53 has a convex portion 90 on the painted surface, it may occur that the edge portion 84 cannot be in close contact momentarily. , the edge portion 84 and the upper eccentric portion 53 are brought into close contact with each other as shown in FIG. 8 by rotating the crankshaft 50 .
　図９に示した状態からクランクシャフト５０を回転させると、塗装面の凸部９０はエッジ部８４に接触し、削りとられる。凸部９０以外の塗装面については、滑らかに仕上げられた大円部８２と接触することになるため、傷等がつくことは無い。また、大円部８２と上側偏心部５３は、凹部形状と凸部形状の接触となるため、接触箇所の応力が小さく、傷等がつきにくい効果がある。 When the crankshaft 50 is rotated from the state shown in FIG. 9, the convex portion 90 of the painted surface comes into contact with the edge portion 84 and is scraped off. The painted surface other than the convex portion 90 is not damaged because it comes into contact with the smoothly finished large circular portion 82 . In addition, since the large circular portion 82 and the upper eccentric portion 53 are in contact with each other in the concave and convex shapes, the stress at the contact portion is small, and the damage is less likely to occur.
　また、修正工具８０の奥行き方向の長さは上側偏心部５３の軸方向長さよりも長く設定されているため、クランクシャフト５０を１回転以上させることで、上側偏心部５３の塗装面全面を修正することができる。なお、修正工具８０の奥行き方向の長さは修正が必要な個所の長さ以上となっていれば、上側偏心部５３の軸方向長さよりも短くてもよい。 Further, since the length of the correction tool 80 in the depth direction is set longer than the axial length of the upper eccentric portion 53, the entire coated surface of the upper eccentric portion 53 is corrected by rotating the crankshaft 50 one or more times. can do. The length of the correction tool 80 in the depth direction may be shorter than the axial length of the upper eccentric portion 53 as long as it is equal to or greater than the length of the portion requiring correction.
　図１０は、実施の形態１に係る塗装面修正装置でクランクシャフト５０の塗装面を加工する前後の表面写真と断面形状を表した図である。断面形状を示す図の横軸は、塗装面の軸方向長さを無次元化した値を表し、縦軸は、塗装面の高さを無次元化した値を表す。前述のとおり、塗装面の凸部が無い箇所を傷つけることなく、凸部９０を効率的にかつ確実に除去することができていることが確認できる。 10A and 10B are photographs of the surface and cross-sectional shape before and after the painted surface of the crankshaft 50 is processed by the painted surface correcting device according to the first embodiment. The horizontal axis of the drawing showing the cross-sectional shape represents the dimensionless value of the axial length of the coated surface, and the vertical axis represents the dimensionless value of the coated surface height. As described above, it can be confirmed that the protrusions 90 can be removed efficiently and reliably without damaging the portions of the painted surface where there are no protrusions.
　以上のように、塗装箇所の径よりも大きな円弧と、それと平行かつ塗装箇所の径よりも小さな幅の小円部などの溝を有する修正工具８０を、被加工物であるクランクシャフト５０に倣わせながら従動可能に押し付け、クランクシャフト５０を回転させる、これにより、クランクシャフト５０の塗装面の凸部が無い箇所を傷つけることなく、凸部９０を効率的にかつ確実に除去することができる。ここで、修正工具８０の溝は円弧と平行であることが望ましいが、平行でない場合でもエッジ部８４がクランクシャフト５０に接触できるようになっていれば塗装面の凸部の除去は可能である。 As described above, the correction tool 80 having a groove such as a circular arc larger than the diameter of the painted portion and a small circular portion parallel thereto and having a width smaller than the diameter of the painted portion mimics the crankshaft 50, which is the workpiece. Then, the crankshaft 50 is rotated while being driven so as to be driven, so that the projection 90 can be efficiently and surely removed without damaging the non-projection part of the coated surface of the crankshaft 50.例文帳に追加Here, it is desirable that the groove of the correction tool 80 is parallel to the circular arc, but even if it is not parallel, if the edge portion 84 can come into contact with the crankshaft 50, it is possible to remove the convex portion of the painted surface. .
実施の形態２．
　実施の形態１同様、塗装箇所の径よりも大きな円弧である大円部８２と、それと平行かつ塗装箇所の径よりも小さな幅の溝の小円部８３を有した修正工具８０を、被加工物であるクランクシャフト５０に倣わせながら従動可能に押し付け、クランクシャフト５０を回転させる。この場合、図１１のように、修正工具８０の大円部８２から端面部８７に滑らかにつながるテーパー部８６を設けてもよい。このような構成にすることによって、修正工具８０をクランクシャフト５０に押し付ける際に、テーパー部８６に沿って、修正工具８０が上側偏心部５３に従動することができるようになるため、端面部８７と上側偏心部５３が接触することによる傷の発生を防止することができる。 Embodiment 2.
As in the first embodiment, a correction tool 80 having a large circular arc portion 82 that is an arc larger than the diameter of the painted portion and a small circular portion 83 that is parallel to the arc and has a width smaller than the diameter of the painted portion is used. The crankshaft 50, which is an object, is pressed so as to be driven while following the crankshaft 50, and the crankshaft 50 is rotated. In this case, as shown in FIG. 11, a tapered portion 86 that smoothly connects from the large circle portion 82 of the correction tool 80 to the end face portion 87 may be provided. With such a configuration, when the correction tool 80 is pressed against the crankshaft 50 , the correction tool 80 can follow the upper eccentric portion 53 along the tapered portion 86 . and the upper eccentric portion 53 can be prevented from being scratched.
実施の形態３．
　実施の形態１同様、塗装箇所の径よりも大きな円弧である大円部８２と、それと平行かつ塗装箇所の径よりも小さな幅の溝を有した修正工具８０を、被加工物であるクランクシャフト５０に倣わせながら従動可能に押し付け、クランクシャフト５０を回転させる。この場合、図１２のように、修正工具８０の溝を矩形部８８のように形成してもよい。このような構成にすることで、塗装面の凸部９０を除去する時に接触する面の角度が直角となる。切削工具でいうところのすくい角を０°にすることに相当し、小円部８３によって形成された溝よりも切れ味を向上することができ、凸部の除去性を向上できる。 Embodiment 3.
As in the first embodiment, a correction tool 80 having a large circular arc portion 82 that is larger than the diameter of the painted portion and a groove that is parallel to it and has a width smaller than the diameter of the painted portion is mounted on the crankshaft, which is the workpiece. The crankshaft 50 is rotated while following the 50 and pressed so as to be driven. In this case, the groove of the correction tool 80 may be formed like a rectangular portion 88 as shown in FIG. With such a configuration, the angle of the contact surface becomes a right angle when removing the convex portion 90 on the coated surface. This corresponds to setting the rake angle of a cutting tool to 0°, and can improve sharpness compared to grooves formed by the small circular portions 83, and can improve the removability of convex portions.
　本願は、様々な例示的な実施の形態及び実施例が記載されているが、１つ、または複数の実施の形態に記載された様々な特徴、態様、及び機能は特定の実施の形態の適用に限られるのではなく、単独で、または様々な組み合わせで実施の形態に適用可能である。
従って、例示されていない無数の変形例が、本願明細書に開示される技術の範囲内において想定される。例えば、少なくとも１つの構成要素を変形する場合、追加する場合または省略する場合、さらには、少なくとも１つの構成要素を抽出し、他の実施の形態の構成要素と組み合わせる場合が含まれるものとする。 While this application describes various exemplary embodiments and examples, various features, aspects, and functions described in one or more embodiments may not apply to particular embodiments. can be applied to the embodiments singly or in various combinations.
Accordingly, numerous variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, modification, addition or omission of at least one component, extraction of at least one component, and combination with components of other embodiments shall be included.
１：ロータリ圧縮機、２：回転子、３：固定子、４：電動機構部、５：シリンダブロック、６：ローリングピストン、７：圧縮機構部、１０：筐体、２０：回転支持装置、３０：回転駆動装置、４０：昇降装置、５０：クランクシャフト、５１：主軸部、５２：副軸部、５３：上側偏心部、５４：下側偏心部、５５：非塗装軸部、５６：上側中心穴、５７：ドライブ溝、５８：下側中心穴、６０：塗装面修正工具ユニット、６１：主軸部用修正工具ユニット、６２：副軸部用修正工具ユニット、６３：上側偏心部用修正工具ユニット、６４：下側偏心部用修正工具ユニット、６５：ユニットベース、７１：ガイドレール、７２：スライドブロック、７３：スライドベース、７４：ガイドピン、７５：修正工具ベース、７６：リニアブッシュ、７７：圧縮ばね、７８：球面座金、７９：落下防止ボルト、８０：修正工具、８１：ボディ、８２：大円部、８３：小円部、８４：エッジ部、８５：ボルト通し穴、８６：テーパー部、８７：端面部、８８：矩形部、９０：凸部、１００：塗装面修正装置。 1: rotary compressor, 2: rotor, 3: stator, 4: electric mechanism, 5: cylinder block, 6: rolling piston, 7: compression mechanism, 10: housing, 20: rotation support device, 30 : rotary drive device, 40: lifting device, 50: crankshaft, 51: main shaft portion, 52: sub shaft portion, 53: upper eccentric portion, 54: lower eccentric portion, 55: uncoated shaft portion, 56: upper center hole, 57: drive groove, 58: lower center hole, 60: painted surface correcting tool unit, 61: main shaft correcting tool unit, 62: sub shaft correcting tool unit, 63: upper eccentric correcting tool unit , 64: correction tool unit for lower eccentric portion, 65: unit base, 71: guide rail, 72: slide block, 73: slide base, 74: guide pin, 75: correction tool base, 76: linear bush, 77: Compression spring 78: spherical washer 79: fall prevention bolt 80: correction tool 81: body 82: large circle portion 83: small circle portion 84: edge portion 85: bolt through hole 86: tapered portion , 87: end surface portion, 88: rectangular portion, 90: convex portion, 100: coating surface correcting device.

Claims (11)

  1. 　修正工具、前記修正工具をクランクシャフトの塗装面に倣わせながら押し付ける押し付け機構を備え、前記修正工具は、前記クランクシャフトの軸に垂直な断面が、塗装箇所の径よりも大きな円弧状の凹部と前記凹部上に形成され前記塗装箇所の径よりも小さな幅の溝部とからなり、前記塗装面を移動させることにより、前記凹部と前記溝部との境界に形成されるエッジ部で前記塗装面の凸部を除去することを特徴とする塗装面修正装置。 A correction tool is provided with a pressing mechanism that presses the correction tool while following the painted surface of the crankshaft, and the correction tool has an arc-shaped concave portion whose cross section perpendicular to the axis of the crankshaft is larger than the diameter of the painted portion. and a groove formed on the concave portion and having a width smaller than the diameter of the coating portion. A painted surface correction device characterized by removing a part.
  2. 　前記クランクシャフトを回転させる回転駆動手段をさらに備え、前記回転駆動手段で前記クランクシャフトを回転させることにより前記塗装面を移動させることを特徴とする請求項１に記載の塗装面修正装置。 2. The painted surface correcting apparatus according to claim 1, further comprising rotational driving means for rotating the crankshaft, wherein the painted surface is moved by rotating the crankshaft with the rotational driving means.
  3. 　前記修正工具は、前記押し付け機構により押し付けられた状態のまま、前記クランクシャフトの回転に合わせて従動することを特徴とする請求項２に記載の塗装面修正装置。 The painted surface correcting device according to claim 2, wherein the correcting tool follows the rotation of the crankshaft while being pressed by the pressing mechanism.
  4. 　前記塗装箇所の軸方向全体にわたって前記エッジ部が延びていることを特徴とする請求項１から３のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 3, characterized in that the edge portion extends over the entire axial direction of the painted portion.
  5. 　前記溝部は、前記凹部とともに前記軸方向に平行に形成されていることを特徴とする請求項１から４のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 4, characterized in that the groove is formed parallel to the axial direction together with the recess.
  6. 　前記押し付け機構は、前記凹部を前記塗装面に接触させ、予め定められたばねの反力で付勢することで、前記エッジ部を前記塗装面に密着させることを特徴とする請求項１から５のいずれか１項に記載の塗装面修正装置。 6. The method according to any one of claims 1 to 5, wherein the pressing mechanism brings the recessed portion into contact with the painted surface and urges it with a predetermined reaction force of a spring to bring the edge portion into close contact with the painted surface. The painted surface correcting device according to any one of claims 1 to 3.
  7. 　前記凹部の表面は、十点平均粗さＲｚ１．０μｍ以下であることを特徴とする請求項１から６のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 6, wherein the surface of the recess has a ten-point average roughness Rz of 1.0 µm or less.
  8. 　前記凹部の端部がテーパー状に形成されていることを特徴とする請求項１から７のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 7, characterized in that the end of the recess is tapered.
  9. 　前記溝部は、クランクシャフトの軸に垂直な断面が円弧状に形成されていることを特徴とする請求項１から８のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 8, wherein the groove has an arcuate cross section perpendicular to the axis of the crankshaft.
  10. 　前記溝部は、クランクシャフトの軸に垂直な断面が矩形状に形成されていることを特徴とする請求項１から８のいずれか１項に記載の塗装面修正装置。 The painted surface correcting device according to any one of claims 1 to 8, characterized in that the groove has a rectangular cross section perpendicular to the axis of the crankshaft.
  11. 　請求項１から１０のいずれか１項に記載の塗装面修正装置を用いて、ロータリ圧縮機のクランクシャフトの塗装面を修正するロータリ圧縮機の製造方法。 A method for manufacturing a rotary compressor, wherein the painted surface of a crankshaft of the rotary compressor is corrected using the painted surface correcting device according to any one of claims 1 to 10.
PCT/JP2021/021898 2021-06-09 2021-06-09 Coated-surface modification device and production method for rotary compressor WO2022259412A1 (en)

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JPH106101A (en) * 1996-06-14 1998-01-13 Nkk Corp Scraper for resin pipe
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JPH03238067A (en) * 1990-02-15 1991-10-23 Matsushita Electric Ind Co Ltd Method and apparatus for removing coating layer
JPH106101A (en) * 1996-06-14 1998-01-13 Nkk Corp Scraper for resin pipe
JPH1182820A (en) * 1997-09-06 1999-03-26 Usui Internatl Ind Co Ltd Method of stripping resin layer from resin coated metallic pipe, and device therefor
JP2004167398A (en) * 2002-11-20 2004-06-17 Kurimoto Ltd Apparatus for removing coating sticking on outside surface of tube
JP2005098379A (en) * 2003-09-24 2005-04-14 Usui Kokusai Sangyo Kaisha Ltd Method for stripping off resin layer of resin coated metal tube
JP2017185458A (en) * 2016-04-07 2017-10-12 キヤノン株式会社 Cylindrical substrate coating film removing method and electrophotographic photosensitive manufacturing method

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