JP2009136963A - Liquid honing device for cylindrical workpiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid honing device for a cylindrical workpiece, which can reduce an occurrence frequency of inconvenience in which the cylindrical workpiece cannot be detached from a boss portion due to engagement of abrasive grains of a honing liquid in a gap between the workpiece and the boss portion. <P>SOLUTION: The liquid honing device 1 has a workpiece support member 2 for supporting the workpiece 30. The workpiece support member 2 has: a mount portion 3 having a bearing surface 4 arranged on an upper surface thereof, for bearing a lower end face 31 of the workpiece 30; and the boss portion 5 protruding upward from the bearing surface 4, and fitted into an opening 32 formed in a lower edge of the workpiece 30. Then the liquid honing device has formed therein honing liquid discharge grooves 7 in a manner of extending from a peripheral surface of the boss portion 5 via the bearing surface 4 to a peripheral surface of the mount portion 3, for discharging the honing liquid 23 having infiltrated inside the workpiece 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid honing processing apparatus and a liquid honing processing method for performing a liquid honing process on a cylindrical workpiece such as a raw pipe of a pipe for a photosensitive drum substrate.

  In a photosensitive drum mounted on an electronic copying machine, a laser printer, or the like, a photosensitive drum substrate that supports a photosensitive conductive layer such as selenium or an organic photosensitive member is made of a metal pipe such as aluminum (including its alloy). Is formed. This pipe is required to have high dimensional accuracy (for example, straightness) and also to have high surface accuracy in order to obtain a high-quality image.

  By the way, in many cases, this pipe is manufactured from a raw tube obtained by drawing, but such a raw tube often has a non-uniform surface state. Therefore, conventionally, in order to make the surface of the raw tube uniform (for example, uniformly roughened), the surface of the raw tube is subjected to liquid honing (see, for example, Patent Documents 1-6).

  11 and 12 are diagrams for explaining a method of liquid honing a workpiece (that is, a raw tube) by a conventional liquid honing apparatus.

  As shown in these drawings, the conventional liquid honing apparatus (101) includes a workpiece support member (102) that vertically supports the workpiece (130) from the lower side thereof. The workpiece support member (102) includes a pedestal portion (103) having an annular seat surface (104) provided on the upper surface, and a seat surface (104) inside the seat surface (104) of the pedestal portion (103). And a boss portion (105) provided so as to protrude upward. As shown in FIG. 12, in a state where the workpiece (130) is supported by the workpiece support member (102), the boss portion (105) is fitted into the lower end opening (132) of the workpiece (130), and the workpiece ( 130) is received by the seat surface (104) of the pedestal portion (103). In this state, as shown in FIG. 11, the pedestal portion (103), the boss portion (105), and the workpiece (130) are integrally rotated around the central axis of the workpiece (130). Further, the honing gun (122) is moved in the axial direction of the work (130) while the honing liquid (123) is jetted toward the surface of the work (130) by the honing gun (honing liquid jetting means) (122). Thereby, the surface of the workpiece (130) is subjected to liquid honing.

  According to this liquid honing process, during the liquid honing process, the honing liquid (123) flows between the lower end surface (131) of the work (130) and the seat surface (104) of the pedestal (103). Infiltrate inside. Further, the honing liquid (123) enters the inside of the work (130) from the upper end opening of the work (130). Then, as shown in FIG. 12, the abrasive grains contained in the honing liquid (123) that has entered the inside of the work (130) are removed between the inner peripheral surface of the work (130) and the outer peripheral surface of the boss part (105). As a result, the work (130) cannot be removed from the boss part (105) after the liquid honing process, and the inner peripheral surface of the work (130) is damaged by abrasive grains. The problem of sticking occurs.

In order to eliminate such problems, Japanese Patent Application Laid-Open No. 2005-221908 discloses that the lower end portion of the boss portion is set to have a smaller diameter than the upper end portion of the boss portion (see Patent Document 7).
JP 2004-246124 A JP-A-6-35211 JP 2002-292567 A JP 2006-224298 A JP 2006-150585 A JP 2007-72179 A JP-A-2005-221908

  However, in the method disclosed in the above publication, after removing the workpiece from the boss portion, the abrasive grains accumulated on the outer peripheral surface and the seating surface of the boss portion must be carefully cleaned and removed, resulting in a reduction in processing efficiency. There was a difficulty to do.

  The present invention has been made in view of the above-described technical background, and its purpose is to reduce the frequency of occurrence of problems that prevent removal of the cylindrical workpiece from the boss portion due to the biting of abrasive grains. It is an object of the present invention to provide a cylindrical workpiece liquid honing processing apparatus capable of improving the processing efficiency, a cylindrical workpiece liquid honing processing method using the processing apparatus, a pipe manufacturing apparatus, and a pipe manufacturing method.

  The present invention provides the following means.

[1] A seat portion that receives the lower end surface of the cylindrical workpiece has a pedestal portion provided on the upper surface, and a boss portion that protrudes upward with respect to the seat surface of the pedestal portion and is fitted into the lower end opening of the workpiece. A work support member,
A honing liquid discharge groove for discharging honing liquid that has entered inside the work to the outside of the work extends from the outer peripheral surface of the boss portion to the outer peripheral surface of the pedestal portion through the seat surface. Liquid honing machine for workpieces.

  [2] The liquid honing apparatus according to the above item 1, further comprising a work receiving ring that is detachably disposed between the seating surface of the base portion of the work support member and the lower end surface of the work.

  [3] The liquid honing apparatus according to item 1 or 2, wherein the bottom surface of the discharge groove portion is bent in an arc shape on the outer peripheral surface side of the pedestal portion in a direction in which the honing liquid flows through the discharge groove portion toward the discharge port.

[4] There are a plurality of discharge grooves,
4. The liquid honing apparatus according to any one of items 1 to 3, wherein the plurality of discharge grooves are arranged at intervals in the circumferential direction of the boss and the pedestal.

[5] A chuck means for chucking the workpiece by pressing the inner peripheral surface of the workpiece over the entire circumference in the circumferential direction is provided on the boss portion of the workpiece support member.
The workpiece supported by the workpiece support member and chucked by the chuck means is sequentially subjected to liquid honing and cleaning, and then the workpiece is chucked by the chuck means according to any one of items 1 to 4 above. Liquid honing machine.

[6] Using the liquid honing apparatus according to any one of 1 to 5 above,
A liquid honing method characterized by subjecting a cylindrical workpiece supported by a workpiece support member to liquid honing.

[7] Using the liquid honing apparatus according to item 2 above,
The workpiece support ring is detachably disposed between the seat surface of the base portion of the workpiece support member and the lower end surface of the cylindrical workpiece, and the workpiece support member boss is fitted into the lower end opening of the workpiece. A liquid honing process, characterized by subjecting a liquid honing process.

[8] Using the liquid honing apparatus as described in 5 above,
A liquid honing method characterized in that after a cylindrical workpiece supported by a workpiece support member and chucked by a chuck means is sequentially subjected to liquid honing and cleaning, the chuck of the work by the chuck means is released.

[9] In a pipe manufacturing apparatus provided with a liquid honing apparatus for liquid honing a raw pipe,
A pipe manufacturing apparatus comprising the liquid honing apparatus according to any one of items 1 to 5 as the liquid honing apparatus.

[10] Using the liquid honing apparatus according to any one of 1 to 5 above,
A method for manufacturing a pipe, comprising subjecting an elementary pipe supported by a workpiece support member to liquid honing.

[11] Using the liquid honing apparatus according to the preceding item 2,
The workpiece support ring is detachably disposed between the seat surface of the pedestal portion of the workpiece support member and the lower end surface of the blank tube, and the boss portion of the workpiece support member is fitted in the lower end opening of the blank tube. A method of manufacturing a pipe, characterized by subjecting the pipe to a liquid honing process.

[12] Using the liquid honing apparatus according to item 5,
A pipe manufacturing method comprising: subjecting a raw pipe supported by a workpiece support member and chucked by a chuck means to liquid honing and cleaning in sequence, and then releasing the chuck of the raw pipe by the chuck means.

  The present invention has the following effects.

  According to the cylindrical workpiece liquid honing apparatus according to the invention of [1], the honing liquid discharge groove for discharging the honing liquid that has entered the inside of the cylindrical work to the outside of the work is provided from the outer peripheral surface of the boss portion to the seating surface. It extends through the outer peripheral surface of the pedestal portion. Therefore, if the honing liquid enters the inside of the work during the liquid honing process, the entered honing liquid is quickly discharged to the outside of the work through the discharge groove. Therefore, it is possible to make it difficult for the abrasive grains in the honing liquid to be caught between the inner peripheral surface of the workpiece and the outer peripheral surface of the boss part. Thereby, it is possible to reduce the frequency of occurrence of a failure that makes it impossible to remove the workpiece from the boss portion, and it is possible to prevent a failure in which the inner peripheral surface of the workpiece is damaged by abrasive grains.

  Further, as described above, the honing liquid that has entered the inside of the work is quickly discharged to the outside of the work through the discharge groove, so that the abrasive grains in the honing liquid accumulate on the outer peripheral surface and the seating surface of the boss part. It becomes difficult to do. As a result, it is not always necessary to clean the outer peripheral surface and the seating surface of the boss portion, or it is only necessary to clean the boss portion easily, so that the processing efficiency can be improved.

  In the invention of [2], the liquid honing apparatus includes a workpiece receiving ring that is detachably disposed between the seat surface of the base portion of the workpiece support member and the lower end surface of the workpiece. Therefore, by receiving the lower end surface of the workpiece with the workpiece receiving ring, the lower end surface of the workpiece does not directly contact the seat surface of the pedestal portion. Thereby, the malfunction which the seat surface of a base part wears can be prevented. On the other hand, since the lower end surface of the work comes into direct contact with the work receiving ring, the receiving ring is worn. However, if the work receiving ring is worn, remove the work receiving ring and replace it with a new one. Compared to the case of replacement, the replacement work can be performed easily.

  In the invention of [3], the honing liquid passing through the discharge groove is easy to flow toward the discharge port of the discharge groove. Therefore, the honing liquid can be discharged more rapidly.

  In the invention of [4], since the plurality of discharge groove portions are arranged at intervals in the circumferential direction of the boss portion and the pedestal portion, the honing liquid that has entered the inside of the workpiece is discharged more rapidly to the outside of the workpiece. be able to. Thereby, the abrasive grains in the honing liquid can be made more difficult to deposit on the outer peripheral surface and the seating surface of the boss portion.

  In the invention of [5], after the workpiece supported by the workpiece support member and chucked by the chuck means is sequentially subjected to liquid honing and cleaning, the workpiece chucking by the chuck means is released, so that the workpiece is cleaned when the workpiece is cleaned. With the cleaning liquid collected on the upper side of the chuck part of the chuck means inside the abrasive grains, the abrasive grains remaining on the outer peripheral surface and the seating surface of the boss part can be washed out to the outside of the work at once. Thereby, an abrasive grain can be removed reliably.

  The liquid workpiece honing method for a cylindrical workpiece according to the invention of [6] has the same effect as the effect of any one of the inventions of [1] to [5].

  The liquid work honing method for a cylindrical workpiece according to the invention of [7] has the same effect as the effect of the invention of [2].

  The liquid work honing method for a cylindrical workpiece according to the invention of [8] has the same effect as the effect of the invention of [5].

  The pipe manufacturing apparatus according to the invention of [9] has the same effect as the effect of any of the inventions of [1] to [5].

  The method for manufacturing a pipe according to the invention of [10] has the same effect as the effect of any of the inventions of [1] to [5].

  The method for manufacturing a pipe according to the invention of [11] has the same effect as the effect of the invention of [2].

  The pipe manufacturing method according to the invention of [12] has the same effect as the effect of the invention of [5].

  Next, several embodiments of the present invention will be described below with reference to the drawings.

  1-7 is a figure explaining the liquid honing processing apparatus and the liquid honing processing method of the cylindrical workpiece which concern on 1st Embodiment of this invention.

  In FIG. 1, (1) is the liquid honing apparatus of the first embodiment. The cylindrical workpiece (30) subjected to liquid honing by the liquid honing apparatus (1) is, for example, a base pipe of a precision pipe. More specifically, a photosensitive work mounted on an electronic copying machine, a laser printer, a FAX apparatus, or the like. This is a base pipe of a pipe used for a drum base, that is, a pipe for a photosensitive drum base.

  This work (that is, a raw pipe) (30) is a cylindrical one set to a predetermined length, and is made of a drawn pipe made of aluminum (including an alloy thereof, the same applies hereinafter) obtained by drawing. The length of the workpiece (30) is, for example, 200 to 450 mm, the outer diameter of the workpiece (30) is, for example, 15 to 50 mm, and the thickness of the workpiece (30) is, for example, 0.5 to 2 mm. The lower end surface (31) and the upper end surface of the work (30) are respectively disposed in a plane perpendicular to the central axis of the work (30).

  However, in the present invention, the workpiece (30) is not limited to being made of aluminum, and may be made of another metal or other material. In the present invention, the length, outer diameter, and thickness of the work (30) are not limited to the above ranges.

  In the first embodiment, the surface of the work (30) (more specifically, the outer peripheral surface of the work (30)) is subjected to liquid honing using this liquid honing machine (1) (that is, roughened). Thus, a pipe for the photosensitive drum substrate is obtained. In other words, the liquid honing apparatus (1) is for liquid honing the surface of the workpiece (30) provided in the photosensitive drum substrate pipe manufacturing apparatus.

  In the first embodiment, the surface of the workpiece (30) is subjected to liquid honing so that, for example, Rz is in the range of 1 to 3 μm. Rz is the ten-point average roughness defined in JIS (Japanese Industrial Standards) B0601-1994. However, in the present invention, the workpiece (30) is not limited to the liquid honing process so that the surface roughness Rz of the workpiece (30) falls within this range, and depending on the use of the workpiece (30). The roughness of the surface of the workpiece (30) is set.

  As shown in FIG. 1, the liquid honing apparatus (1) includes a honing tank (20), and is configured to sequentially liquid-hone and clean the workpiece (30) in the honing tank (20). Has been.

  The honing tank (20) includes a honing chamber (21), a cleaning chamber (24), and a conveying means (27) inside the honing tank (20).

  The honing chamber (21) is where the workpiece (30) is subjected to liquid honing.

  The cleaning chamber (24) is a place where the workpiece (30) subjected to the liquid honing process in the honing chamber (21) is cleaned.

  The conveying means (27) conveys the work (30) subjected to the liquid honing in the honing chamber (21) from the honing chamber (21) to the cleaning chamber (24). In the first embodiment, the conveying means (27) is a turntable type. In FIG. 1, (27a) is a turntable and (27b) is a rotating shaft of the turntable (27a). (28) is a partition wall installed on the turntable (27a).

  In the honing chamber (21), a work support member (2) that vertically supports the work (30) from below, and a honing liquid injection that injects honing liquid (23) toward the surface of the work (30). A honing gun (22) as a means is arranged. Further, although not shown, a rotatable upper support member is disposed to support the upper end of the work (30) in a state where the upper end opening (33) of the work (30) is closed.

  As shown in FIGS. 1 to 3, the work support member (2) is attached to the rotation support base (18) installed on the turn table (27 a) of the turn table type transport means (27) by a plurality of bolts (19). It is attached in a fixed state. The rotation support base (18) is rotationally driven by a rotation drive source (not shown) such as a motor. By attaching the work support member (2) to the rotation support base (18) in a fixed state, the work support member (2) and the work (30) supported by the work support member (2) It is rotated about the central axis (30). The configuration of the work support member (2) will be described later.

  The honing gun (22) has an injection port (22a) that injects the honing liquid (23) toward the surface of the work (30) perpendicularly to the surface of the work (30). The honing gun (22) is disposed corresponding to the work (30) supported by the work support member (2). Further, the honing gun (22) is arranged laterally with respect to the central axis of the work (30) and is configured to be movable in the vertical direction along the central axis of the work (30). Specifically, in the present embodiment, the honing gun (22) is configured to be movable from top to bottom along the central axis of the workpiece (30) during the liquid honing process.

  The honing liquid (23) ejected from the ejection port (22a) by the honing gun (22) contains a large number of abrasive grains. The abrasive grains are made of aluminum oxide, calcium oxide, silicon carbide, silicon nitride, boron nitride or the like. The average grain size of the abrasive grains is set in the range of 10 to 60 μm, for example. The abrasive grain concentration in the honing liquid (23) is set, for example, in the range of 5 to 20% by volume. However, in the present invention, the average grain size and the abrasive grain concentration of the abrasive grains are not limited to the above ranges, respectively.

  As shown in FIG. 1, the cleaning chamber (24) is a place where the surface of the work (30) subjected to the liquid honing process is shower-cleaned, in detail. In this cleaning chamber (24), a plurality of cleaning liquid injection nozzles (25) for injecting a cleaning liquid (26) such as water toward the surface of the work (30) are arranged side by side in the axial direction of the work (30). Has been. Further, the nozzle (25a) arranged at the top of the plurality of nozzles (25) is configured so that the cleaning liquid (26) is opened at the upper end of the work (30) in order to clean the inner peripheral surface of the work (30). The cleaning liquid (26) is sprayed from the portion (33) so as to flow into the inside of the work (30) (that is, into the hollow portion of the work (30)).

  Moreover, as shown in FIG. 1, the liquid honing apparatus (1) is provided with the control means (29) which controls operation | movement of a liquid honing apparatus (1). This control means (29) is comprised from the computer which has a memory | storage part (for example, hard disk, ROM, RAM). The storage unit stores a program for controlling the operation of the liquid honing apparatus (1) so that the workpiece (30) is sequentially subjected to liquid honing and cleaning.

  In FIG. 1, one work (30) is arranged in each of the honing chamber (21) and the cleaning chamber (24). However, in the present invention, the honing chamber (21) and the cleaning chamber are also provided. A plurality of (for example, 2 to 10) workpieces (30) are disposed in the chamber (24), respectively, and the plurality of workpieces (30) are sequentially liquid-honed and cleaned. The honing apparatus (1) may be configured.

  Next, the configuration of the work support member (2) will be described in detail below.

  As shown in FIGS. 2 to 5, the work support member (2) has a pedestal portion (3), a boss portion (5), and the like. The pedestal portion (3) and the boss portion (5) are made of resin and are integrally formed with each other. As the resin, MC nylon, polytetrafluoroethylene, polyoxymethylene, urethane or the like is used.

  The pedestal portion (3) is substantially columnar or substantially cylindrical. An annular seat surface (4) for receiving the annular lower end surface (31) of the vertically arranged workpiece (30) is formed on the upper surface of the pedestal portion (3). The seating surface (4) is arranged horizontally.

  The boss portion (5) protrudes upward with respect to the seat surface (4) on the inner side of the seat surface (4) of the pedestal portion (3) and is integrally formed coaxially with the pedestal portion (3). The boss part (5) is substantially columnar or substantially cylindrical, and the diameter of the boss part (5) is set smaller than the diameter of the pedestal part (3). The boss portion (5) is fitted into the lower end opening (32) of the work (30) in an adapted state.

  A chuck means (8) is provided projecting upward at the upper end of the boss (5) (more specifically, the center of the upper end surface of the boss (5)). The chuck means (8) grips the work (30). Specifically, the chuck (8) presses the inner peripheral surface of the work (30) over the entire circumference in the circumferential direction. Is to chuck. The chuck means (8) is composed of, for example, a commercially available air picker.

  The chuck means (8) includes a vertically-arranged support shaft portion (8b) and a rubber chuck portion (8a) that is provided at the upper end portion of the support shaft portion (8b) and can be expanded and contracted in the radial direction. ). The chuck part (8a) is swelled by supplying compressed air into the chuck part (8a), while the chuck part (8a) is swelled by discharging air from the swelled chuck part (8a), The chuck portion (8a) is configured to contract. An air supply / discharge passage (not shown) for supplying and discharging air to and from the chuck portion (8a) extends downward along the axial direction of the support shaft portion (8b). Is provided. And this spindle part (8b) is inserted in a fitting state in the spindle part insertion hole (9) provided in the center part of the base part (3) and boss part (5) of the work support member (2). (See FIG. 5).

  In the work support member (2), as shown in FIGS. 3 to 5, there is a boss in the region from the outer peripheral surface of the boss portion (5) through the seat surface (4) to the outer peripheral surface of the pedestal portion (3). A plurality of (four in the first embodiment) honing liquid discharge groove portions (7) arranged at equal intervals in the circumferential direction of the portion (5) and the pedestal portion (3) are formed from the outer peripheral surface of the boss portion (5). It extends through the seat surface (4) to the outer peripheral surface of the pedestal portion (3). The discharge groove (7) is for discharging the honing liquid (23) that has entered the work (30) to the outside of the work (30). The discharge port (7a) of the discharge groove part (7) is formed to open to the outer peripheral surface of the pedestal part (3).

  The cross-sectional shape of the discharge groove (7) is an arc shape (see FIG. 4). Moreover, the width E of the part formed in the outer peripheral surface of the boss | hub part (5) in the discharge groove part (7) is set to the range of 5-15 mm, for example. The width F of the part formed in the outer peripheral surface of the base part (3) in the discharge groove part (7) is set to the range of 8-20 mm, for example. The depth of the discharge groove (7) is set in a range of 5 to 30 mm, for example.

  However, in the present invention, the cross-sectional shape of the discharge groove portion (7) is not limited to the arc shape, but may be a V shape, a U shape, or the like. In the present invention, the widths E and F of the discharge groove (7) are not limited to the above ranges, and can be variously changed according to the inner diameter and outer diameter of the work (30). In the present invention, the depth of the discharge groove (7) is not limited to the above range. In the present invention, the number of discharge grooves (7) is not limited to four, and can be variously changed. For example, the number of discharge grooves (7) may be one or two to ten. Alternatively, other numbers may be used.

  Further, as shown in FIG. 5, the bottom surface (7b) of the discharge groove (7) is formed so that the honing liquid (23) flows in the discharge groove (7) toward the discharge port (7a). ) Is bent in an arc shape on the outer peripheral surface side. The curvature radius of the bottom surface (7b) bent in this arc shape is set to, for example, 5 to 30 mm, and specifically set to, for example, 10 mm. However, in the present invention, the radius of curvature of the bottom surface (7b) is not limited to the above range.

  In FIG. 4, (17) is a bolt insertion hole for a bolt (19) for fixing the work support member (2) to the rotation support base (18).

  Next, a method for liquid honing the workpiece (30) using the liquid honing apparatus (1) of the first embodiment will be described below.

  As shown in FIG. 3, the lower end opening (32) of the work (30) is moved by moving the vertically disposed work (30) in the honing chamber (21) of the honing tank (20). The chuck means (8) is inserted into the workpiece (30) from the inside, and the boss portion (5) of the workpiece support member (2) is fitted into the fit in the lower end opening (32) of the workpiece (30). Furthermore, the lower end surface (31) of the work (30) is placed in contact with the seat surface (4) of the pedestal portion (3) in a surface contact state with the lower end surface (31) of the work (30). Receive on the seat (4). Thereby, a workpiece | work (30) is directly supported by the workpiece | work support member (2) vertically.

  Next, the compressed air is supplied into the chuck portion (8a) of the chuck means (8) to swell the chuck portion (8a), and the inner peripheral surface of the work (30) extends over the entire circumference. Press with the chuck part (8a). Thereby, the work (30) is chucked by the chuck means (8). If necessary, the upper end of the work (30) is supported in a state in which the upper end opening (33) of the work (30) is closed by a rotatable work upper end support member (not shown).

  Next, the work support member (2) and the work (30) are integrally rotated about the central axis of the work (30) by rotating the rotation support base (18). The rotation speed of the workpiece (30) is set to, for example, 50 to 200 rotations / min. However, in the present invention, the rotational speed of the workpiece (30) is not limited to the above range.

  Next, as shown in FIGS. 1 and 2, the honing gun (22) ejects the honing liquid (23) from the injection port (22a) toward the surface of the work (30), and the honing gun (22) is moved to the work piece. Move from top to bottom along the axial direction of (30). Thereby, the entire surface of the workpiece (30) is subjected to a liquid honing process [liquid honing process].

  During this liquid honing process, the honing liquid (23) entered the inside of the pipe (30) from between the lower end surface (31) of the pipe (30) and the seating surface (4) of the pedestal (3). In this case, the entered honing liquid (23) is quickly discharged from the discharge port (7a) to the outside of the work (30) through the plurality of discharge grooves (7).

  When the liquid honing process is completed, the injection of the honing liquid (23) by the honing gun (22) is stopped. Further, the rotation of the work (30) is stopped.

  Next, the workpiece (30) subjected to the liquid honing process is transferred from the honing chamber (21) to the cleaning chamber (24) by the transfer means (27) [transfer step].

  Next, by rotating the rotation support base (18) again, the work support member (2) and the work (30) are integrally rotated around the central axis of the work (30).

  Next, as shown in FIG. 1, the cleaning liquid (26) is sprayed toward the surface of the work (30) by a plurality of cleaning liquid spray nozzles (25), thereby shower-cleaning the entire surface of the work (30) [ Cleaning step]. Simultaneously with this cleaning, the cleaning liquid (26) is moved from the upper end opening (33) of the work (30) to the inside of the work (30) by the nozzle (25a) disposed at the top of the plurality of nozzles (25). By spraying the cleaning liquid (26) so as to flow in, the inner peripheral surface of the work (30) is cleaned.

  During the cleaning, the cleaning liquid (26) that has flowed into the inside of the work (30) from the upper end opening (33) of the work (30), as shown in FIG. It collects on the upper side of the chuck part (8a) of 8).

  When the cleaning is completed, the spraying of the cleaning liquid (26) by the nozzle (25) is stopped. Further, the rotation of the work (30) is stopped.

  Next, the chuck portion (8a) is contracted by discharging air in the chuck portion (8a) of the chuck means (8), thereby releasing the chuck of the work (30) by the chuck means (8). Then, as shown in FIG. 7, the cleaning liquid (26) accumulated inside the work (30) is discharged from the discharge port (7a) to the outside of the work (30) through the plurality of discharge grooves (7) all at once. The Thereby, the abrasive grains remaining on the outer peripheral surface and the seating surface (4) of the boss portion (5) are washed away to the outside of the workpiece (30).

  Next, the work (30) is removed from the boss part (5).

  By passing through the above process, the workpiece | work (30) in which the liquid honing process and washing | cleaning were performed is obtained. Next, the work (30) is transported to another process for manufacturing the photosensitive drum base pipe. In the above process, the liquid honing process, the transport process, and the cleaning process are controlled so as to be automatically and sequentially shifted by the control means (29) of the liquid honing apparatus (1).

  Thus, the liquid honing apparatus (1) of the first embodiment has the following advantages.

  The honing liquid discharge groove (7) for discharging the honing liquid (23) that has entered the work (30) to the outside of the work (30) passes through the seat surface (4) from the outer peripheral surface of the boss part (5). It extends to the outer peripheral surface of the pedestal part (3). Therefore, if the honing liquid (23) enters the inside of the work (30) during the liquid honing process, the entered honing liquid (23) passes through the discharge groove (7) and is discharged from the discharge port (7a). It is quickly discharged outside the work (30). Therefore, it is possible to make it difficult for the abrasive grains in the honing liquid (23) to be caught between the inner peripheral surface of the work (30) and the outer peripheral surface of the boss portion (5). Thereby, it is possible to reduce the frequency of occurrence of problems that make it impossible to remove the work (30) from the boss part (5), and to prevent problems that the inner peripheral surface of the work (30) is damaged by abrasive grains. Can do.

  Further, as described above, the honing liquid (23) that has entered the inside of the work (30) is quickly discharged to the outside of the work (30) through the discharge groove (7), so that the honing liquid (23) Are difficult to deposit on the outer peripheral surface and the seating surface (4) of the boss portion (5). Thereby, it is not always necessary to clean the outer peripheral surface and the seating surface (4) of the boss portion (5), or it is only necessary to clean the boss portion (5), and the processing efficiency can be improved.

  Further, the bottom surface (7b) of the discharge groove portion (7) is circular on the outer peripheral surface side of the pedestal portion (3) in the direction in which the honing liquid (23) flows through the discharge groove portion (7) toward the discharge port (7a). Bent in an arc. Accordingly, the honing liquid (23) passing through the discharge groove (7) is discharged compared to the case where the bottom surface (7b) of the discharge groove (7) is bent at right angles to the outer peripheral surface side of the pedestal (3). It tends to flow toward the discharge port (7a) of the groove (7). Therefore, the honing liquid (23) can be discharged more rapidly.

  Further, since the plurality of discharge groove portions (7) are arranged at intervals in the circumferential direction of the boss portion (5) and the pedestal portion (3), the honing liquid (23) entering the inside of the work (30). Can be discharged to the outside of the work (30) more rapidly. Thereby, the abrasive grains in the honing liquid (23) can be further hardly deposited on the outer peripheral surface and the seating surface (4) of the boss portion (5).

  Further, the liquid honing apparatus (1) supports the workpiece (30) by the workpiece support member (2) and sequentially chucks the workpiece (30) with the workpiece (30) chucked by the chuck means (8). After honing and cleaning, the chuck of the work (30) by the chuck means (8) is released. Therefore, as shown in FIGS. 6 and 7, the boss portion (5) is caused by the cleaning liquid (26) accumulated on the upper side of the chuck portion (8a) of the chuck means (8) inside the workpiece (30) when the workpiece (30) is cleaned. The abrasive grains remaining on the outer peripheral surface and the seating surface (4) can be washed out to the outside of the workpiece (30) at once. Thereby, an abrasive grain can be removed reliably.

  8-10 is a figure explaining the liquid honing processing apparatus and the liquid honing processing method which concern on 2nd Embodiment of this invention. The second embodiment will be described below with a focus on differences from the first embodiment.

  The liquid honing apparatus (1) of the second embodiment is obtained by adding a work receiving ring (16) to the liquid honing apparatus of the first embodiment. The number of work receiving rings (16) is one or more.

  As shown in FIG. 8, the work receiving ring (16) can be removed between the seat surface (4) of the base (3) of the work support member (2) and the lower end surface (31) of the work (30). It is arranged and used. This work receiving ring (16) receives the lower end surface (31) of the work (30), and is made of an annular plate-shaped resin as shown in FIG. As the resin, MC nylon, polytetrafluoroethylene, polyoxymethylene, urethane or the like is used. An insertion hole (16a) having a circular cross section into which the boss portion (5) is fitted is formed at the center of the work receiving ring (16).

  The inner diameter of the workpiece receiving ring (16), that is, the diameter of the fitting hole (16a) is set to be the same as the diameter of the boss portion (5). As a result, the workpiece receiving ring (16) can be fitted with the boss portion (5) in the inside (that is, the boss portion fitting hole (16a)).

  The outer diameter of the workpiece receiving ring (16) is set to be the same as or slightly larger than the outer diameter of the pipe (30). In the second embodiment, the outer diameter of the workpiece receiving ring (16) is set to be, for example, 0.3 to 2 mm larger than the outer diameter of the pipe (30). However, in the present invention, the outer diameter of the workpiece receiving ring (16) is not limited to the above range.

  The thickness of the workpiece receiving ring (16) is set to 0.5 to 3 mm, for example. However, in the present invention, the thickness of the work receiving ring (16) is not limited to the above range.

  Both surfaces in the thickness direction of the workpiece receiving ring (16), that is, the upper surface and the lower surface of the workpiece receiving ring (16) are formed flat.

  Next, a method of liquid honing the workpiece (30) using the liquid honing apparatus (1) of the second embodiment will be described below with a focus on differences from the first embodiment.

  As shown in FIG. 9, the boss portion (5) of the workpiece support member (2) is fitted into the inside of the workpiece receiving ring (16) (that is, the boss portion fitting hole (16a)), and the workpiece receiving ring (16) is fitted. It mounts on the seat surface (4) of a base part (3). Thereby, the workpiece receiving ring (16) is detachably mounted on the seating surface (4).

  Next, the workpiece (30) arranged vertically is moved downward, whereby the chuck means (8) is inserted into the inside of the workpiece (30) from the lower end opening (32) of the workpiece (30). The boss part (5) is fitted into the lower end opening part (32) of (30) in an adapted state. Further, the lower end surface (31) of the work (30) is placed on the upper surface of the work receiving ring (16) in contact with the upper surface of the work receiving ring (16), thereby placing the lower end surface (31) of the work (30) on the work receiving ring. Receive in (16). As a result, as shown in FIG. 9, the work (30) is vertically supported by the work support member (2) via the work receiving ring (16). In this support state, the workpiece receiving ring (16) is interposed between the lower end surface (31) of the workpiece (30) and the seat surface (4) of the base portion (3) of the workpiece support member (2). .

  Further, the compressed air is supplied into the chuck portion (8a) of the chuck means (8) to swell the chuck portion (8a), and the inner peripheral surface of the work (30) extends over the entire circumference. Press with the chuck part (8a). Thereby, the work (30) is chucked by the chuck means (8).

  Thereafter, the workpiece (30) is sequentially subjected to liquid honing and cleaning in the same procedure as the liquid honing method of the first embodiment.

  Thus, the liquid honing apparatus (1) of the second embodiment has the following advantages in addition to the advantages of the first embodiment.

  That is, in the liquid honing apparatus of the first embodiment, the lower end surface (31) of the work (30) is in direct contact with the seat surface (4) of the pedestal part (3). The seating surface (4) is worn by the abrasive grains in the honing liquid (23) that has entered between the lower end surface (31) of the seating portion (30) and the seating surface (4) of the pedestal (3). In particular, in the first embodiment, since a plurality of honing liquid discharge grooves (7) are formed on the seat surface (4) of the base portion (3), the work lower end surface (31) of the seat surface (4). The contact area is reduced. Therefore, the load per unit area acting on the seat surface (4) during the liquid honing process is increased, and the seat surface (4) is likely to be worn.

  On the other hand, in the second embodiment, since the liquid honing apparatus (1) includes the workpiece receiving ring (16), the workpiece receiving ring (16) is provided on the seat surface (4) of the pedestal portion (3). ) Is placed, the lower end surface (31) of the work (30) is received by the work receiving ring (16), so that the lower end surface (31) of the work (30) becomes the seat surface (3) of the base part (3). 4) No contact directly. For this reason, it is possible to prevent the seat surface (4) from being worn out. On the other hand, since the lower end surface (31) of the work (30) directly contacts the work receiving ring (16), the work receiving ring (16) (more specifically, the upper surface of the work receiving ring (16)) wears out. When the receiving ring (16) is worn, remove the work receiving ring (16) and replace it with a new one, compared to replacing the pedestal (3) (or work supporting member (2)). Exchange work can be performed easily.

  Moreover, since the shape of the work receiving ring (16) is an annular plate shape, that is, a simple shape, the work receiving ring (16) can be obtained or manufactured at low cost. Therefore, the workpiece receiving ring (16) can be replaced at a low cost.

  Although several embodiments of the present invention have been described above, the present invention is not limited to those shown in the above embodiments, and various modifications can be made.

  In the present invention, the cleaning of the workpiece (30) performed after the workpiece (30) is subjected to the liquid honing process is not limited to the shower cleaning, and various types of cleaning can be applied. It may be washed.

  In the present invention, the work support member (2) may be made of metal such as stainless steel.

  In the present invention, the work receiving ring (16) may be made of metal such as stainless steel.

  Further, in the present invention, the workpiece (30) is not limited to being a pipe of a photosensitive drum as a pipe of a precision pipe, and can be applied to various pipes, for example, an optical pipe. It may be an elementary tube of a pipe for a barrel of a device (eg, camera, telescope), or may be used for other purposes.

  In the present invention, the work (30) is not limited to a cylindrical shape, but may be a rectangular tube shape or the like.

  INDUSTRIAL APPLICABILITY The present invention can be used in a liquid honing processing apparatus and a liquid honing processing method for performing a liquid honing process on a cylindrical workpiece such as a raw pipe of a pipe for a photosensitive drum substrate.

  In addition, the present invention can be used for an apparatus for manufacturing a pipe such as a pipe for a photosensitive drum substrate and a method for manufacturing the pipe.

FIG. 1 is a schematic side view of a liquid honing apparatus for a cylindrical workpiece according to a first embodiment of the present invention. FIG. 2 is a side view showing the workpiece support member of the liquid honing apparatus in a state where the workpiece is being subjected to liquid honing. FIG. 3 is a perspective view of the workpiece support member. FIG. 4 is a plan view of the workpiece support member. FIG. 5 is a sectional view taken along line XX in FIG. FIG. 6 is a cross-sectional view showing the workpiece support member in a state during workpiece cleaning. FIG. 7 is a cross-sectional view showing the workpiece support member in a state after cleaning the workpiece. FIG. 8 is a side view showing the workpiece supporting member and the workpiece receiving ring of the liquid honing apparatus according to the second embodiment of the present invention in a state where the workpiece is being subjected to liquid honing. FIG. 9 is a perspective view showing the work support member and the work receiving ring separately. FIG. 10 is a cross-sectional view of a state in which the workpiece receiving ring is placed on the seat surface of the pedestal portion of the workpiece supporting member. FIG. 11 is a side view showing a workpiece support member of a conventional liquid honing apparatus in a state where the workpiece is subjected to liquid honing. FIG. 12 is an enlarged view of a portion Z in FIG.

Explanation of symbols

1: liquid honing apparatus 2: work support member 3: pedestal part 4: seat surface 5: boss part 7: honing liquid discharge groove part 7a: discharge port 7b: bottom face 8: chuck means 8a: chuck part 16: work receiving ring 18 : Rotating support 20: Honing tank 22: Honing gun (honing liquid injection means)
23: Honing liquid 25: Cleaning liquid injection nozzle 26: Cleaning liquid 27: Conveying means 30: Workpiece (element tube)
31: Lower end surface 32: Lower end opening

Claims (12)

A work support member having a pedestal portion having a seat surface for receiving the lower end surface of the cylindrical workpiece on the upper surface, and a boss portion protruding upward with respect to the seat surface of the pedestal portion and fitted into the lower end opening of the work piece With
A honing liquid discharge groove for discharging honing liquid that has entered inside the work to the outside of the work extends from the outer peripheral surface of the boss portion to the outer peripheral surface of the pedestal portion through the seat surface. Liquid honing machine for workpieces.   2. The liquid honing apparatus according to claim 1, further comprising a work receiving ring that is detachably disposed between a seating surface of the base portion of the work support member and a lower end surface of the work.   3. The liquid honing apparatus according to claim 1, wherein the bottom surface of the discharge groove portion is bent in an arc shape toward the outer peripheral surface side of the pedestal portion in a direction in which the honing liquid flows through the discharge groove portion toward the discharge port. The number of discharge grooves is plural,
The liquid honing apparatus according to claim 1, wherein the plurality of discharge grooves are arranged at intervals in the circumferential direction of the boss and the pedestal. Chuck means for chucking the workpiece by pressing the inner peripheral surface of the workpiece over the entire circumference in the circumferential direction is provided on the boss portion of the workpiece support member.
The workpiece supported by the workpiece support member and chucked by the chuck means is sequentially subjected to liquid honing and cleaning, and then the workpiece is chucked by the chuck means. The liquid honing apparatus as described. Using the liquid honing apparatus according to any one of claims 1 to 5,
A liquid honing method for a cylindrical workpiece, characterized by subjecting a cylindrical workpiece supported by a workpiece support member to liquid honing. Using the liquid honing apparatus according to claim 2,
The workpiece support ring is detachably disposed between the seat surface of the base portion of the workpiece support member and the lower end surface of the cylindrical workpiece, and the workpiece support member boss is fitted into the lower end opening of the workpiece. A liquid honing method for a cylindrical workpiece, characterized in that a liquid honing process is performed. Using the liquid honing apparatus according to claim 5,
The cylindrical workpiece supported by the workpiece support member and chucked by the chuck means is sequentially subjected to liquid honing and cleaning, and then the chuck of the workpiece by the chuck means is released. . In a pipe manufacturing apparatus including a liquid honing apparatus for liquid honing a raw pipe,
A pipe manufacturing apparatus comprising the liquid honing apparatus according to claim 1 as the liquid honing apparatus. Using the liquid honing apparatus according to any one of claims 1 to 5,
A method for manufacturing a pipe, comprising subjecting an elementary pipe supported by a workpiece support member to liquid honing. Using the liquid honing apparatus according to claim 2,
The workpiece support ring is detachably disposed between the seat surface of the pedestal portion of the workpiece support member and the lower end surface of the blank tube, and the boss portion of the workpiece support member is fitted in the lower end opening of the blank tube. A method of manufacturing a pipe, characterized by subjecting the pipe to a liquid honing process. Using the liquid honing apparatus according to claim 5,
A pipe manufacturing method comprising: subjecting a raw pipe supported by a workpiece support member and chucked by a chuck means to liquid honing and cleaning in sequence, and then releasing the chuck of the raw pipe by the chuck means.

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