JPH04159067A - Roller polishing device - Google Patents

Abstract

PURPOSE:To improve polishing precision by supporting a rotary shaft to a holder, rotatably held to a casing, through a bearing and causing the holder to form an eccentric holder which is differed in thickness in a radial direction, and regulating a rotation position by means of a regulation screw. CONSTITUTION:In a rotary type grinder 5, a rotary shaft 8 to the tip of which a grinding stone 7 is secured is rotatably located to a casing 9, and the rotary shaft 8 is coupled to a rotation drive means through a universal joint 10. The rotary shaft 8 is supported to a holder 12, rotatably held to a casing 9, through a bearing, and the holder 12 forms an eccentric holder differed in thicknesses T and (t) in a radial direction. A regulating screw 13 is joined in a screwed-in state in a state to be located astride between the holder 12 and the casing 9. Through rotation of the regulating screw 13, the holder 12 is rotationally displaced from the casing 9, and this constitution swings the axis of the rotary shaft 8.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a roller polishing device, and more specifically, the device body is provided with a roller mounting portion for rotationally driving a polishing roller, and the roller mounting portion is The present invention relates to an improvement in a roller polishing device, which is provided with a movable table that reciprocates in parallel, a rotary grinder is provided on the movable table, and the rotary grinder performs polishing while rotating the polishing roller.

(b) In terms of conventional technology, a 1fz roller polishing device (the term "roller" here includes cylindrical, cylindrical, and conical shapes, as well as those in which these are formed in a stepped portion) is as follows: Parallel linear! There was a problem that the polishing accuracy (roundness, surface roughness) could not be improved due to the appearance of grinding lines, but this could be solved (by bringing the grinding stone of the grinder into line contact with the roller). In this way, a device has been proposed that improves polishing accuracy by forming twill-like polishing lines on the roller surface (see Japanese Patent Publication No. 51-46315). , a rotary shaft with a grindstone fixed to the tip is rotatably held in the casing, and the casing is attached to the horizontal axis (an axis parallel to the polishing roller) with respect to a support arm provided on the movable table so as to be swingable in the vertical direction. The casing is provided with a balancer so that the contact angle and contact pressure of the grindstone with respect to the polishing roller can be adjusted.

(c) Problems to be Solved by the Invention However, in the above-mentioned grinder, as shown in FIG. 3 of the same patent publication, the casing is A pair of adjustment screws are brought into contact with an operating arm extending from a horizontal shaft provided on the support arm, and by rotating these screws, the operating arm is swung, and the casing relative to the support arm is rotated. The slope was adjusted.

This structure has the problem of requiring a pair of illumination screws, which is time-consuming, and since the casing is held on the support arm only by the horizontal shaft, the tension of the drive belt on the drive shaft of the grinding wheel is reduced. The polishing resistance reaction force during polishing acts on the horizontal axis,
There is a problem in that the adjustment position of the casing is very unstable, and the adjustment of the pair of adjustment screws must be made accurately to avoid play.

Furthermore, since the casing as a whole is swung and tilted around the horizontal axis while holding the drive shaft to which the grindstone is fixed, the means for driving the drive shaft must be limited to a transmission belt. .

In other words, if an electric motor is directly connected to the drive shaft of the grinding wheel, the weight of the electric motor will create an abnormal contact pressure (minimum pressure) of the grinding wheel against the polishing roller, which will reduce the contact pressure. This is because adjustments cannot be made.

In addition, in order to adjust the contact pressure of the grindstone, the balancer was configured to be slidably provided on the support arm, so there was a problem that it took time to locate the balancer at the 11th point, and the above-mentioned contact pressure was also required. Problems also arose due to limitations in pressure and drive means.

(c) Means for Solving the Problems In order to solve the problems of the prior art described above, the present invention provides a roller mounting section 3 for rotationally driving the polishing roller 2 in the apparatus main body l, and the roller mounting section 3, a rotary grinder 5 is provided on the movable base 4, and the rotary grinder 5 performs polishing while rotating the polishing roller 2. In the apparatus, the rotary grinder 5 is provided on the movable base 4 so as to be movable back and forth so as to be able to move toward and away from the polishing roller 2, and a drive means 6 for moving the rotary grinder 5 back and forth is provided, The rotary grinder 5 includes a rotary shaft 8 having a grindstone 7 fixed to the tip thereof, which is rotatably provided in a casing 9, and the rotary shaft 8 is connected to a rotary drive means 11 via a universal joint 10. is rotatably supported on a holder 12 rotatably held in the casing 9, and the holder 12 is
The solution was to construct an eccentric holder with different wall thicknesses in the radial direction, and to adjust the rotational position of the holder 12 using an adjustment screw 13.

The polishing roller 2 that is the object of the present invention includes a cylindrical shape, a cylindrical shape, a conical shape, and a shape in which these shapes are formed in a stepped portion. Further, as the driving means 6 for moving the rotary grinder 5 back and forth, an electric motor is preferable, but other means such as a hydraulic cylinder may also be used.
Further, as the rotational drive means 11 for driving the grindstone, as described in claim (2), a method in which a joint shaft is directly connected to an electric motor and then connected to the universal joint 10 as in the embodiment is used. According to the above configuration, when the IJi joint screw 13 is rotated in one direction, the holder 12 is moved against the casing 9. At this time, since the holder 12 is eccentric, the rotating shaft 8 supported by the holder 12
is bent and displaced from the universal joint 10, and as a result, the grindstone 7 attached to the rotating shaft 8 is displaced with respect to the polishing roller 2.

Therefore, by adjusting the adjustment screw 13 by turning it left and right, the contact angle of the grindstone 7 with respect to the polishing roller 2 can be adjusted very easily.

When adjusting the contact angle of the grindstone 7, the casing 9 does not swing or displace as in the prior art, so the casing 9 is always stably supported, and the rotating shaft 8 and the grindstone 7 can be stabilized, and polishing precision can be improved.

Furthermore, by using the eccentric holder 12, the rotational drive means 11 for driving the grinding wheel 7 can be provided directly on the casing 9, and by adjusting it by compressed air pressure, it is possible to The contact pressure can be adjusted easily and accurately, and at the same time, the entire device can be made more compact.

(e) Examples Below, FIGS. 1 to 4 (A), (B), and (C) show preferred examples of the roller polishing apparatus according to the present invention.
The details will be explained based on the following.

Basically, a roller polishing device is provided with a roller polishing unit 3 that rotationally drives a polishing roller 2 in the device main body 1, and a movable table 4 that reciprocates in parallel with the roller platform 3.
A rotary grinder 5 is provided on the movable base 4, and the rotary grinder 5 is configured to perform polishing while rotating the polishing roller 2.

An electric motor is used to rotationally drive the polishing roller 2, as is the case in the past, so a detailed explanation thereof will be omitted here.

The rotary grinder 5 is provided on the movable stand 4 so as to be movable back and forth so that it can move toward and away from the polishing roller 2. In this structure, the movable base 4
A rail facing the polishing roller 2 side is laid on the rail, and the rotary grinder 5 is placed on this rail. An electric motor 6 is provided as a drive means for moving the rotary grinder 5 back and forth on the rail, and although not shown, a female screw connected to the electric motor 6 and a part of the rotary grinder 5 are connected to each other. With the provided male screw,
The rotary grinder 5 is configured to be movable.

The rotary grinder 5 has a rotary shaft 8 rotatably provided in a casing 9 with a grindstone 7 fixed to the tip thereof.
is connected to rotational drive means via a universal joint 10.

The rotating shaft 8 is supported by a holder 12 rotatably held in the casing 9, and the holder 12 is shown in FIGS. 3 and 4 (A), (B), and (C). As shown, its radial thickness T￥(T), (t
) is composed of an eccentric holder with different features.

An eight-peripheral screw 13 is screwed between the holder 12 and the casing 9, and an eight-circle adjustment screw 1
3, the holder 12 is rotationally displaced relative to the casing 9t, thereby swinging the axis of the rotating shaft 8.

The adjusting screw 13 is configured to adjust the contact angle of the grindstone 7 of the rotary grinder 5 with respect to the polishing roller 2.

Figure 4 (B) shows the same state of contact with the grindstone as in Figure 3, Figure 4 (A) shows the state in which it is swung to the right, and Figure 4 (C) shows the state in which it is swung to the right. , shows the state of swinging to the left,
A contact state that matches each polishing condition can be obtained.

(f) Effect of the invention According to the present invention, by simply operating one il1 node screw,
The contact angle of the grindstone against the polishing roller can be adjusted very easily.

When adjusting the contact angle of the grindstone, the casing does not swing or displace as in the conventional technology, so the casing and, by extension, the grindstone can be stabilized, improving polishing accuracy. It is possible to do so.

Further, as described in claim (2), a rotary drive means for driving the grindstone is provided directly in the casing by using the eccentric holder and adjusting the contact pressure against the grindstone by air pressure. This makes it possible to adjust the contact pressure more easily and accurately than with conventional movable balancers, and at the same time, the entire device can be made more compact without being limited to belt transmission as in the past.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the roller polishing device according to the present invention, FIG. 1 is a front view of the entire device, FIG. 2 is a side view thereof, and FIG. 3 is a main part of the rotary grinder. Longitudinal side view, FIG. 4(A). (B) and (C) are longitudinal sectional front views each showing a state of use. DESCRIPTION OF SYMBOLS 1... Apparatus body, 2... Polishing roller, 3... Roller mounting part, 4... Movable base, 5... Rotary grinder, 6... Drive means, 7... Grindstone , 8...Rotating shaft, 9...Casing, 10...Universal joint, 11...Rotation drive means, 12...Holder, 13...VfI node screw. Patent applicant Sanko Kikai Co., Ltd. Figure 1 Figure 2

Claims (2)

[Claims] (1) A roller mounting part 3 for rotationally driving the polishing roller 2 is provided in the apparatus main body 1, a movable stand 4 is provided that reciprocates in parallel with the roller mounting part 3, and a rotary grinder is mounted on the movable stand 4. In a roller polishing device configured to perform polishing with the rotary grinder 5 while rotating the polishing roller 2, the rotary grinder 5 is mounted on the movable table 4 relative to the polishing roller 2. A driving means 6 is provided for moving the rotary grinder 5 back and forth, and the rotary grinder 5 has a rotating shaft 8 with a grindstone 7 fixed to the tip attached to a casing 9 so as to be freely rotatable. The rotating shaft 8 is connected to a rotation drive means 11 via a universal joint 10, and the rotating shaft 8 is supported on a holder 12 which is rotatably held in the casing 9.
A roller polishing device characterized in that the holders 12 and 2 are eccentric holders having different wall thicknesses in the radial direction, and the rotational position of the holder 12 is adjusted by an adjustment screw 13. (2) The roller polishing apparatus according to claim 1, wherein the rotational drive means 11 comprises an electric motor provided directly on the casing 9.