JPH11320350A - Composite machining method and composite machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time required for a plurality of kinds of machining, in a method to effect a plurality of kinds of machining to a surface to be machined of a workpiece. SOLUTION: In a composite machining method, by pressing a varnishing roller 76 and a lapping tape 84, being two kinds of machining tools, against a surface 12 to be machined in two positions situated facing each other, with the workpiece 10 rotated, a roller burnishing machining and a lapping machining, being two kinds of machining, are applied on the surface 12 to be machined simultaneously with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for processing a workpiece, and more particularly to a technique for performing a plurality of types of processing on a surface to be processed of the workpiece.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 8-1502 discloses a technique for performing a plurality of types of processing on a work surface of a work. A technique for performing polishing is described.

[0003]

Problems to be Solved by the Invention, Means for Solving Problems, Functions and Effects of the Invention In the technical field of processing a workpiece, it is generally important to reduce the required processing time. Was made to solve the problem. This problem is solved by the following aspects of the present invention. In the following description,
Each aspect of the present invention will be described in the same form as the claims, with the respective items numbered. This is to clarify the possibility of adopting the features described in each section in combination.

(1) While rotating a work having a generally cylindrical surface to be processed, two types of processing tools are pressed against the same processed surface at two positions facing each other with the work interposed therebetween. Wherein the two types of machining are performed in parallel on the same surface to be machined. According to this method, two types of machining (machining) are performed on the same surface to be processed in parallel with each other, so that these two types of machining are performed at different times from each other. The time required for processing can be easily reduced. Further, according to this method, the two types of processing tools are opposed to each other across the work, so that the forces acting on the work from each processing tool cancel each other. As a result, an unnecessary moment is not generated in the work at the time of combined machining, a function for supporting the moment is not required, and the structure of an apparatus that performs two types of machining in parallel can be easily simplified. . (2) The two types of processing tools include a roller having a smooth surface and a polishing tape, and the two types of processing include a roller polishing process in which the roller is pressed against the work to smooth the roller, and the polishing is performed. (1) The polishing method according to the above (1), wherein the polishing is performed by pressing the tape against the work. According to this method, the time required for the two types of processing can be easily reduced as compared with the case where the roller processing and the polishing processing are performed on the same processing surface at different times. Here, "Surface Rolling" includes roller burnishing. In addition, there are two types of "polishing": fixed abrasives and free abrasives.Fixed abrasives include dry lapping, and free abrasives include wet lapping. Processing is included. (3) The two types of processing tools are composed of a grindstone and a polishing tape, and the two types of processing are a grinding process in which the grinding stone is brought into contact with the work to grind the work, and the work is performed by pressing the polishing tape. (1) The polishing method according to the above (1), which comprises polishing. According to this method, the time required for the two types of processing can be easily reduced as compared with the case where the grinding processing and the polishing processing are performed on the same processing surface at different times. (4) The two types of processing tools are composed of a cutting tool and a polishing tape, and the two types of processing are a cutting process in which the cutting tool is brought into contact with the cutting tool to cut the work, and the work is performed by pressing the polishing tape. (1) The polishing method according to the above (1), which comprises polishing. According to this method, the time required for these two types of processing can be easily reduced as compared with the case where cutting and polishing are performed on the same processing surface at different times. (5) The two types of processing tools include a cutting tool and a grinding stone,
The processing method according to claim 1, wherein the two types of processing include a cutting process of cutting the work by contacting the cutting tool and a grinding process of grinding the work by contacting the grindstone. According to this method, the time required for these two types of processing can be easily reduced as compared with the case where cutting and grinding are performed on the same processing surface at different times. (6) A work rotating device for rotating a work having a work surface having a generally cylindrical shape, a pair of clamp members that can be approached and separated from each other at a position sandwiching the work, and the pair of clamp members are mutually connected. An approaching / separating device for approaching / separating, and detachable with respect to the pair of clamp members, and two types of processing tools, the two types of processing tools being separated from each other by separating the work on the same work surface. A multi-tasking machine (Claim 3), comprising a pair of cartridges that are held in a state where they can be pressed at two opposing positions. According to this apparatus, for the same reason as in the above item (1), the time required for two types of processing to be performed on the same processing surface can be easily reduced, and the structure of the combined processing apparatus can be simplified. Could be simplified. Furthermore, according to this apparatus, since two types of processing tools are held by a pair of clamp members via a pair of cartridges, two types of processing tools are paired as compared with a case where they are directly held. Can be easily attached to and detached from the clamp member. (7) The combined processing apparatus according to (6), wherein the two types of processing tools comprise a roller having a smooth surface and an abrasive tape. According to this apparatus, the time required for the two types of processing can be easily reduced as compared with the case where the roller processing and the polishing processing are performed on the same processing surface at different times. (8) The combined processing apparatus according to (6), wherein the two types of processing tools include a grindstone and a polishing tape. According to this apparatus, the time required for the two types of processing can be easily reduced as compared with the case where the grinding processing and the polishing processing are performed on the same processing surface at different times. (9) The composite processing apparatus according to (6), wherein the two types of processing tools include a cutting tool and an abrasive tape. According to this device,
Compared to a case where cutting and polishing are performed at different times on the same surface to be processed, the time required for these two types of processing can be easily reduced. (10) The two types of processing tools are composed of a cutting tool and a grindstone.
The combined machining apparatus according to the above mode (6). According to this apparatus, the time required for the two types of processing can be easily reduced as compared with the case where cutting and grinding are performed on the same processing surface at different times. (11) The pair of clamp arms are moved toward and away from each other by one of them being translated relative to the other along a straight line intersecting with the rotation axis of the work. The combined machining apparatus according to any one of the above items 10). According to this apparatus, even if the distance between the pair of clamp arms changes due to a change in the type of work or rotation during processing of the non-cylindrical surface to be processed, each processing tool is pressed against the surface to be processed. Position (rotational position on the work surface of the work)
Does not change, the processing by each processing tool can always be performed in a normal state.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some specific embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 shows a combined machining apparatus according to a first embodiment of the present invention. This combined machining apparatus implements the combined machining method according to the first embodiment of the present invention. This combined machining apparatus uses a cylindrical surface formed on a workpiece 10 as a work surface 12 and also performs a roller burnishing process, which is an example of roller polishing, and a polishing process on the same work surface 12. An example of lapping is performed in parallel with each other. For the work 10, for example, a camshaft or a crankshaft of an automobile engine can be selected.
Further, for the work surface 12, for example, a cam surface of a cam of a camshaft or an outer peripheral surface of a pin and a journal of a crankshaft can be selected.

[0006] The combined machining apparatus is provided with a work rotating device 20, and the work rotating device 20 gives the work 10 a rotational motion about its axis by a motor (not shown) as a drive source. The combined machining apparatus further includes a processing tool holding device 22.
Has a main body 26 and a pair of clamp arms 28a, 28b.

The main body 26 includes a frame 3 as a fixing member.
4 attached. A long hole 42 extending in the vertical direction is formed in the frame 34, and a pin 44 slidably fitted in the long hole 42 is fixed to the main body 26,
Thus, the main body 26 can move up and down with respect to the frame 34 and swing in a vertical plane.

A pair of support shafts 54 extending parallel to each other and to the left and right are fitted to the main body 26 so as to be slidable in the axial direction. The support shafts 54 are arranged vertically.
Both ends of each support shaft 54 are projected right and left from the main body 26. A portion of the support shaft 54 protruding leftward in the figure is a base end 56a of the clamp arm 28a.
The base end 56b of the clamp arm 28b is fitted to a portion protruding rightward so as to be slidable in the axial direction. The support shafts 54 also protrude from the base end 56b, and the housing 59 of the clamp cylinder 58 is fixed to the protruding portions. Clamp cylinder 58
The rod 60 protrudes from the base portion 56, and the protruding portion is fixed to the base end portion 56b. Accordingly, when the clamp cylinder 58 retracts the rod 60, the pair of clamp arms 28a and 28b are moved in parallel to move away from each other. Conversely, when the rod 60 is extended, the pair of clamp arms 28a and 28b Are translated parallel to each other.

The distal ends of the pair of clamp arms 28a and 28b are a pair of holding portions 72a and 72b for detachably holding the pair of cartridges 70a and 70b, respectively. The cartridge 70 a is for roller burnishing, and a housing 74 holds a burnishing roller 76 having a smooth surface so as to be rotatable around one axis parallel to the rotation axis of the workpiece 10. On the other hand, the cartridge 70
b is for lapping, and a housing 78 holds a wrapping tape 84 in which abrasive grains are held on a base material (film) by a take-up reel 80 and a supply reel 82. The lapping tape 84 has a relatively high surface roughness, for example, in the range of about $ 400-800. A normal lapping tape is one in which abrasive grains are unlikely to fall off from the base material. However, in this embodiment, the rough surface of the work 10 is smoothed with the wrapping tape 84 and further finished with the burnishing roller 76. Based on the idea, the wrapping tape 84 is designed such that the abrasive grains easily fall off the base material. The pair of cartridges 70a and 70b hold the burnishing roller 76 and the wrapping tape 84 at two positions facing each other with the work 10 therebetween.

FIG. 2 shows an enlarged view of only a portion of the cartridge 70a which is deeply related to the roller burnishing process. The housing 74 is provided with the burnishing roller 7.
6, a pair of support rollers 90 and 92 and a backup roller 94 are held. A pair of support rollers 9
Reference numerals 0 and 92 are rotatably held at fixed positions sandwiching the burnishing roller 94, and the work surface 1
2 contacts the cartridge 10 with the cartridge 7
0a, that is, the roller burnishing position. The backup roller 94 is a roller that has a larger diameter than the burnishing roller 76 and contacts behind the burnishing roller 76. The burnishing roller 76 and the backup roller 94 are held by the housing 74 so as to be movable along a straight line perpendicular to the rotation axis of the work 10. A spring 96 is provided between the backup roller 94 and the housing 74, and
6, 94 are urged toward the work 10 together.
Thus, despite the variation in the outer shape of the work 10, the burnishing roller 76 is kept at the regular pressure by the burnishing roller 76.
Pressed to zero.

It should be noted that, in this embodiment,
The burnishing roller 76 is rotatably held by the housing 74. During the burnishing operation, the burnishing roller 76 is rolled on the work surface 12 of the work 10 instead of sliding, but the motor is used to rotate the burnishing roller 76. Thereby, it is possible to make a sliding motion on the work surface 12 of the work 10.

In the cartridge 70b, as shown in FIG. 1, the take-up reel 80 and the supply reel 82 are arranged in one plane perpendicular to the rotation axis of the work 10. The wrapping tape 84 held by the pair of reels 80 and 82 is pressed against the workpiece 10 by a shoe 98 attached to the housing 78 as a pressing member.

In this combined machining apparatus, at the time of lapping, the take-up reel 80 is rotated every time the lapping process is completed for one processing surface 12, so that an unused portion of the wrapping tape 84 is removed. It is unwound from the supply reel 82 and wound around the take-up reel 80. Each time the lapping process is completed for one processing surface 12, the wrapping tape 84 is fed by a fixed amount in the length direction of the wrapping tape 84, so that the lapping process of each processing surface 12 is performed by the unused portion of the wrapping tape 84 It is started by. Therefore, as shown in FIG. 3, the tape winding device 104 is detachably attached to the cartridge 70b. The tape winding device 104 includes a motor 106,
The take-up reel 80 is rotated by the motor 106.

The work 10 is machined as follows by the multi-tasking machine configured as described above. First, the work 10 is set on the work rotating device 20, and then the clamp cylinder 58 is operated to cause the pair of clamp arms 28a and 28b to approach each other, whereby the burnishing roller 76 and the wrapping tape 84 are separated. The workpieces 10 are pressed against the work surface 12 of the workpiece 10 in opposite directions. Thereafter, the work 10 is rotated at a constant speed by the work rotating device 20. With this rotation, the burnishing roller 7
The roller 6 is rolled on the surface 12 to be processed, so that the surface to be processed 12 is subjected to roller burnishing. In parallel with the roller burnishing, the wrapping tape 84 rubs the surface 12 to be processed. As a result, the lapping process is performed on the work surface 12.

As described above, since the lapping tape 84 has a relatively rough surface, even if there is a slightly high mountain portion on the surface 12 to be processed before the lapping process, it is scraped off. Also, the surface roughness (the degree of surface irregularities) is improved even in a slightly deep valley portion. Further, when such a burnished surface 12 is subjected to roller burnishing, the surface roughness is further improved, and the surface hardness and tensile strength are also improved. Therefore, if the lapping process is performed on the work surface 12 first and then the roller burnishing process is performed, the surface properties of the work surface 12 change over time as shown in FIG. 4, and as a result, only the lapping process is performed. As compared with the case, the surface roughness and the like of the processed surface 12 are improved.
However, in this case, since the lapping process and the roller burnishing process are performed at different times, the required processing time becomes longer.

On the other hand, in the present embodiment, lapping and roller burnishing are performed on the work surface 12 in parallel with each other, so that lapping and roller burnishing are performed at different times. Compared with the case, the surface roughness of the work surface 12 is improved and the required processing time is shortened.

As is clear from the above description, in this embodiment, the pair of clamp arms 28a and 28b constitute a "pair of clamp members" and the clamp cylinder 5
8 constitutes the “approach / separation device”, and the burnishing roller 7
6 constitutes a "roller", the wrapping tape 84 constitutes a "polishing tape", and the burnishing roller 76 and the wrapping tape 84 constitute "two types of processing tools".

Next, a description will be given of a combined machining apparatus according to a second embodiment of the present invention. However, since the present embodiment has many elements common to the multifunctional machining apparatus according to the first embodiment, detailed description of common elements will be omitted by using the same reference numerals, and only different elements will be described in detail. I do.

In this combined machining apparatus, a grinding process using a grindstone and a lapping process, which is an example of a polishing process, are performed in parallel on the same processing surface 12 of the work 10.
This combined machining apparatus implements a combined machining method according to a second embodiment of the present invention.

FIG. 5 shows this combined machining apparatus. This multi-tasking machine has the same configuration as in the first embodiment for performing lapping, but uses a grinding machine instead of the roller burnishing cartridge 70a in the first embodiment to perform grinding. Cartridge 120. Cartridge 120
As shown in FIG.
4 is attached, and the circular grindstone 12 is
6 is detachably held. The grindstone 126 is rotated around an axis parallel to the rotation axis of the workpiece 10 by the motor 128 during grinding.

The work 10 is machined as follows by the multi-tasking machine configured as described above. First, the work 10 is set on the work rotating device 20, and then the clamp cylinder 58 is operated to cause the pair of clamp arms 28a and 28b to approach each other, whereby the grindstone 126 and the wrapping tape 84 are moved together. The workpieces 10 are pressed in opposite directions to each other. Thereafter, the work 10 is rotated at a constant speed by the work rotating device 20. Along with this rotation, the grindstone 126 grinds the work surface 12 so that the work surface 12 is ground. In parallel with the grinding process, the lapping tape 84 rubs the work surface 12. As a result, the lapping process is performed on the work surface 12.

Therefore, according to the present embodiment, the time required for these two processes is reduced as compared with the case where the same work surface 12 is first subjected to grinding and then lapping.

As is clear from the above description, in the present embodiment, the pair of clamp arms 28a and 28b constitute a "pair of clamp members" and the clamp cylinder 5
8 constitutes the "approach / separation device", and the grindstone 126 and the wrapping tape 84 constitute "two types of processing tools".

Next, a combined machining apparatus according to a third embodiment of the present invention will be described. However, since the present embodiment has many elements common to the multifunctional machining apparatus according to the first embodiment, detailed description of common elements will be omitted by using the same reference numerals, and only different elements will be described in detail. I do.

This combined machining apparatus performs cutting and lapping, which is an example of polishing, on the same work surface 12 of the work 10 in parallel with each other. This combined machining apparatus implements a combined machining method that is a third embodiment of the method of the present invention.

FIG. 6 shows this combined machining apparatus. This multifunctional processing apparatus has the same configuration as in the first embodiment for performing lapping processing, but performs cutting processing in place of the roller burnishing cartridge 70a in the first embodiment for performing cutting processing. Cartridge 140. Cartridge 140
As shown in FIG.
4, and a cutting tool 146 is detachably held in the holder 144.

The work 10 is machined as follows by the multi-tasking machine configured as described above. First, the work 10 is set on the work rotating device 20, and then the clamp cylinder 58 is operated to cause the pair of clamp arms 28a and 28b to approach each other, so that the cutting tool 146 and the wrapping tape 84 are connected. The workpieces 10 are pressed in opposite directions to each other. Thereafter, the work 10 is rotated at a constant speed by the work rotating device 20. With this rotation, the cutting tool 146 moves the work surface 12
By performing the cutting, the lapping tape 84 rubs the surface to be processed 12 in parallel with the cutting. Lapping is performed.

Therefore, according to the present embodiment, the time required for these two processes is reduced as compared with the case where the same work surface 12 is first subjected to cutting and then lapping.

As is clear from the above description, in the present embodiment, the pair of clamp arms 28a and 28b constitute a "pair of clamp members" and the clamp cylinder 5
8 constitutes an "approach / separation device", and the cutting tool 146 and the wrapping tape 84 constitute "two types of processing tools".

While some embodiments of the present invention have been described in detail with reference to the drawings, various modifications may be made based on the knowledge of those skilled in the art without departing from the scope of the claims. The present invention can be implemented in an improved form.

[Brief description of the drawings]

FIG. 1 is a front view showing a multifunctional processing apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged front view showing a main part of a cartridge 70a in FIG.

FIG. 3 is a side view showing the cartridge 70b shown in FIG.

FIG. 4 is a diagram conceptually showing a state in which the surface properties of the processing surface change when lapping processing is performed first on the same processing surface and then roller burnishing processing is performed.

FIG. 5 is a front view showing a combined machining apparatus according to a second embodiment of the present invention.

FIG. 6 is a front view showing a combined machining apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Work 12 Work surface 20 Work rotating device 28a, 28b Clamp arm 58 Clamp cylinder 70a, 70b, 120 Cartridge 76 Burnishing roller 84 Wrapping tape 126 Grinding stone 146 bytes

Claims (4)

[Claims] 1. A method in which two types of processing tools are pressed against the same processing surface at two positions facing each other with the workpiece being rotated, while rotating a work having a processing surface having a generally cylindrical shape. , 2 for the same work surface
A combined machining method characterized in that different types of machining are performed in parallel with each other. 2. The two types of processing tools comprise a roller having a smooth surface and an abrasive tape, wherein the two types of processing include roller polishing for pressing the roller to smooth the work. 2. The method according to claim 1, further comprising: polishing the workpiece by pressing the polishing tape. 3. A work rotating device for rotating a work having a surface to be machined which has a generally cylindrical shape, a pair of clamp members which can approach and separate from each other at a position sandwiching the work, and a pair of these clamp members. An approaching / separating device for approaching / separating from each other; detachable with respect to the pair of clamp members; and two types of processing tools, the two types of processing tools separating the work on the same surface to be processed. And a pair of cartridges that are held in a state where they can be pressed at two positions facing each other. 4. The multifunctional processing apparatus according to claim 3, wherein said two types of processing tools comprise a roller having a smooth surface and an abrasive tape.