JPS60263657A - Abrasive polishing device - Google Patents

Abstract

PURPOSE:To simultaneously polish at one time of polishing process external contours and end surfaces of a work and improve its polishing accuracy, by using a disc-shaped grinding wheel, molded to a female mold aligned to an external shape of the cylindrical work containing its external contour surfaces and both end surfaces to be polished, and polishing the external contour surfaces of the work after its both end surfaces are polished. CONSTITUTION:A polishing device, quickly feeding a stone wheel 15 to a cylindrical work 1 and decreasing a feed speed of the wheel to its predetermined polishing speed if a polishing part 19 reaches end surfaces 20, 21 to be polished, polishes the end surfaces 20, 21. Here the device dischages a chip to the outside by and from a plurality of slitted grooves 18 while prevents the wheel from a burn by the supply of cutting oil, performing high accurate polishing. Successively the wheel 15, if it finishes polishing the end surfaces 20, 21, simultaneously polishes external contour surfaces 22, 23 and 24 by bringing both a small contour part 16 into contact with the external contour surface 22 of the cylindrical work 1 and large contour parts 17, 17' into contact with the both side external contour surfaces 23, 24 of the cylindrical work 1, enabling a polishing cost to be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a polishing device for polishing the outer diameter and end face of a cylindrical workpiece.

(Prior art) Conventionally, polishing of the outer diameter surface and end surface of a cylindrical workpiece using a plunge cut polishing machine, etc., involves using at least two types of grindstone tools with different outer circumferential shapes and dividing the process into two steps. Polishing is being performed.

For example, as shown in FIG. 4, the outer diameter surface 2.3 and end surface 4 of the cylindrical workpiece 1 are first polished with a grindstone tool 5, and then, as shown in FIG. And the end face 7 is polished using a grindstone tool 8.

In addition, when the rotation axis of the grindstone tool is inclined with respect to the workpiece, as shown in FIG. Then, as shown in FIG. 7, the remaining outer diameter surface 6 and end surface 7 are polished using a grindstone tool 11.

(Problems to be Solved by the Invention) However, in such conventional polishing equipment, polishing of the outer diameter surface and end surface of a cylindrical workpiece is performed in two steps using two types of grindstone tools. Because the work was done separately, two polishing machines were required, and the workpieces had to be set for each polishing machine, which took a lot of man-hours.Furthermore, it was difficult to manage the dimensions of the workpieces because they had to be replaced. There was a problem.

(Means for Solving the Problems) The present invention has been made in view of such conventional problems, and is a polishing apparatus for polishing the outer diameter surface and both end surfaces of a cylindrical workpiece. A disc-shaped grindstone tool whose polishing outer circumferential surface is formed into a female mold shape that matches the outer diameter including the polishing outer diameter surface and both end surfaces of the cylindrical workpiece is used, and this grindstone tool is moved to a position where both end surfaces of the cylindrical workpiece are polished by a feeding mechanism. After fast forwarding, the end face is polished at a predetermined polishing speed, and after this end face polishing, the outer diameter is polished, so that the outer diameter face and both end faces of the cylindrical workpiece are simultaneously polished in one processing process. This is what I did.

(Example) FIG. 1 is an explanatory diagram showing a forming process of a grindstone tool used in a polishing apparatus of the present invention.

In FIG. 1, reference numeral 12 denotes a rotary diamond dresser, which has a male shape corresponding to the polishing shape of the grindstone tool 15, that is, a large diameter part 13 in the center and small diameter parts 1" 4.14 on both sides.
′ is provided.

The grindstone tool 15 formed by such a rotary diamond dresser 12 has a female shape that matches the outer diameter and end shape of the rotary diamond dresser 12;
That is, the dressing is formed into a shape having a small diameter portion 16 in the center and large diameter portions 17, 17 on both sides.

Figure 2 shows a cross-section of the grindstone tool 15 shown in Figure 1, with a gap of 2 to 3 mm width on the inner end surface between the small diameter part 16 and the large diameter part 17, 17'. A plurality of slit grooves 18 are provided in the radial direction, and the formation of the slit grooves 18 prevents burning when the end face of the workpiece is polished.

FIG. 3 is an explanatory diagram showing the polishing of a cylindrical workpiece using the whetstone tool 15 formed by the rotary diamond dresser, as shown in FIG. The rotation axis of the grindstone tool 15 set on the grinding wheel is arranged parallel to the center axis of the cylindrical workpiece 1, and the grindstone tool 15 is rapidly fed to the cylindrical workpiece 1 by a hydraulic feed mechanism (not shown). The polishing part 19 in which the slit groove 18 is formed is the cylindrical workpiece 1.
Polished end surface 20. When the polishing speed reaches '21, the hydraulic pressure is reduced 1 to reduce the feed rate to a predetermined polishing rate, and first, the polished end surfaces 20 and 21 of the cylindrical workpiece 1 are polished using the grindstone tool 15.

In this polishing process of the polished end face 20.21, the end face of the grindstone tool 15 (the polishing part 19 for σf polishing is formed with a plurality of slit grooves 18 as shown in FIG. Cutting powder is discharged to the outside from the slit groove 18, and cutting oil is supplied to the polishing section during polishing, so that the grindstone tool may burn during the polishing of the polishing end face 20.21. Highly accurate polishing is performed without any grinding.Next, grinding/stone tool 15
When the polishing process of the polishing end surfaces 20 and 21 is completed by the polishing part of
At the same time, the large diameter portion 17.17- contacts the outer diameter surface 23.24 on both sides of the cylindrical workpiece 1, and polishing of the outer diameter surfaces 22.23 and 24 is performed simultaneously. .

As described above, according to the polishing apparatus of the present invention, by polishing and sending the dressed grindstone tool to the cylindrical workpiece only once, it is possible to polish the outer diameter surface and both end faces of the cylindrical workpiece at the same time. can.

(Effects of the Invention) As described above, according to the present invention, in a polishing apparatus for polishing the outer diameter surface and both end surfaces of a cylindrical workpiece,
Use a disc-shaped grindstone tool whose polishing outer peripheral surface is formed into a female shape that matches the outer diameter shape including the polishing outer diameter surface and polishing end surface of the cylindrical workpiece, and place this grindstone tool at the position for machining the end surface of the cylindrical workpiece. After fast forwarding, end face polishing is performed at a predetermined polishing speed, and after this end face polishing is completed, outer diameter polishing is performed subsequently, so that the outer diameter face and both end faces of a cylindrical workpiece can be polished at the same time with one processing feed. Since it can be polished and requires only one type of grindstone tool, only one polishing machine is required, which greatly reduces equipment costs compared to the conventional case where at least two polishing machines were required. Since the outer diameter surface and both end surfaces can be polished in one processing step, the number of work steps can be significantly reduced, and processing accuracy can be improved and processing costs using a polishing machine can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the forming process of the grindstone tool used in the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. Figure 4゜5 is the conventional 2
An explanatory diagram showing polishing divided into steps, FIGS. 6 and 7 are explanatory diagrams showing another example of conventional polishing divided into two steps. 1: Cylindrical workpiece 12: Rotary diamond dresser 13.17.
17': Large diameter part 14.14", 16: Small diameter part 15: Grinding wheel tool 18 Nislit groove 19: End face polished part 20.21: Polished end face 22. 23, 24: Outer diameter polished surface Patent applicant Fuji Iron Works Co., Ltd. Patent Attorney Susumu Takeuchi Figure 1 Figure 2 Figure 4 Figure 5

Claims (2)

[Claims] (1) In a polishing device that polishes the outside diameter and both ends of a cylindrical workpiece, the polishing outer peripheral surface is formed into a female mold shape that matches the external shape of the cylindrical workpiece, including the polished outer diameter surface and polished end surface. The present invention is equipped with a disc-shaped grindstone tool, and a feeding mechanism that rapidly feeds the grindstone tool to an end face processing position of a cylindrical workpiece, performs end face polishing at a predetermined polishing speed, and performs external polishing after the end face polishing. Polishing processing equipment featuring: (2) The polishing apparatus according to claim 1, wherein the grindstone tool has a plurality of grooves formed in the radial direction at predetermined intervals on the end face of the grindstone for end face polishing.