JPH0737498U - Slide guide device - Google Patents

Abstract

(57) [Summary] [Purpose] The temperature difference between the slide and the press frame occurs due to the reciprocating motion of the slide of the press machine, and the difference in the amount of expansion and contraction due to the thermal expansion is absorbed, and the reciprocating motion of the slide even during eccentric load during press work Provided is a slide guide device that accurately guides movement. [Structure] Thrust cylindrical roller bearing (5) on slide (2)
And a needle roller bearing (6), a guide post (8) having a plurality of guide surfaces on its outer peripheral surface rotatably mounted is erected on the upper surface of the press frame (3) and extends from the center of the slide (2) in a radial direction. Is guided by a cylindrical rolling element (14) provided in a guide sleeve (9) movable to
It has a high rigidity against lateral force, and is configured to perform high-precision, smooth reciprocating motion over a long period of time.

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is used for guiding the reciprocating movement of a slide of a press machine.

[0002]

2. Description of the Related Art As a slide guide device for a conventional press machine, as disclosed in Japanese Patent Publication No. 55-16760, each guide / colum attached to a slide and each guide column have a press machine. It has two guide surfaces mounted on the press frame at the same level as the plane of movement of the workpiece to be processed, these guide surfaces facing each other in the diagonal direction of the rectangle formed by the guides. It is in the form of being positioned as a guide for slides. Since each of the four guide columns has two guide surfaces, at least one guide position of each guide column accurately guides the movement of the slide even if an eccentric load is applied to the slide. .

[0003]

In the plain bearing type plain bearing type of the above-mentioned conventional device, there is a gap between the guide post called a guide column and the slide bearing type bush which is a guide although the rigidity is high. Therefore, the position accuracy is poor, and it is difficult to maintain the accuracy for a long time due to wear. In addition, there is a rolling guide type ball guide type that uses a ball as a conventional technology other than the above, but since the ball and the point are in point contact, the deformation under load is large and the rigidity is low. , The position accuracy during work is poor. Although the roller guide type using rollers, which is another conventional technology, has high rigidity, the guides that are attached to the slide and the guides that are attached to the press frame cause a temperature difference between the slide and the press frame during operation. However, due to the misalignment, an excessive bending force acts on the guide post, and a large lateral force is applied to the roller, the guide and the guide post, resulting in premature wear and, in some cases, damage. The present proposal makes use of these advantages and provides a slide guide device that can increase the rigidity by using rollers and absorb temperature changes during operation.

[0004]

In order to solve the above problems, the present invention provides a plurality of guide surfaces both on the outer surface of the guide post and on the inner surface of the guide, and between the guide post and each guide surface of the guide. By using a cylindrical rolling element as a rolling guide with a cylindrical rolling element interposed, and the guide post is rotatably attached to the slide, the guide post of the inner surface of the guide is inserted via the cylindrical rolling element. Keep parallel and guide accurately. When each guide and guide post are guided by two guide surfaces, each guide and guide post should be placed at an equal distance from the center of the slide in the radial direction, and both guide surfaces of the guide and guide post are parallel to the radial direction. The cylindrical rolling element is arranged so as to be movable in the width direction so as to allow thermal expansion. In addition, when guiding with three or more guide surfaces, insert a holder that guides the guide post linearly through a cylindrical rolling element inside the guide sleeve, and provide a parallel guide surface on the outside of the guide sleeve. , It is arranged so that it can move in the radial direction at a position equidistant from the center of the slide.

[0005]

In the present invention having the above-described structure, the forward and backward movement of the slide transmitted by the press machine is performed by the guide post having guide surfaces at a plurality of positions rotatably fixed to the slide and the guide sleeve erected on the press frame. Since it is rolled and guided by an internal guide through a cylindrical rolling element, the horizontal clearance between the guide post and the guide can be zero, and the guide post can rotate. The guide surface of the guide post automatically becomes parallel to the guide surface of the guide, and the cylindrical roller, which is a rolling element, makes line contact with the guide surface and rolls, so the rigidity against lateral force is high. Further, the guide post and the guide are arranged at positions horizontally equidistant from the center of the slide so as to be movable in the radial direction, and the guide post is also rotatably attached to the slide. The difference in expansion and contraction amount due to the temperature difference can be absorbed. Therefore, unlike the conventional plain guide type and ball guide type, it has high rigidity and can maintain high precision for a long period of time, and also supports high-speed operation.

[0006]

EXAMPLE 1 FIGS. 1 and 2 show Example 1 in which the guide post sliding portion guides on two surfaces. In order to guide the slide (2) of the press machine, a slide guide device (1) consisting of four guides arranged at each corner of the substantially rectangular slide (2) is installed on the slide (2). Needle roller bearing (6), thrust cylindrical roller bearing (5) and spacer (7) are embedded in the hole, and the guide post (8) is rotatably attached to the slide (2) by the end plate (4). Has two guide surfaces, and a guide sleeve (9) provided upright at four corners of the upper surface of the press frame (3) is provided with a push bolt (12) and a pull bolt (11) of a guide retainer (10). Guided by the guide (13) with adjustable spacing between the rolling element (14) and the guide surface, it is guided by the cylindrical rolling element (14) pressed so that the horizontal clearance becomes zero. Repeating the smooth reciprocating. By arranging the guide posts (8) and the guide surfaces of the guide (13) so as to be radially movable at positions equidistant from the center of the slide (2), the slide (2) and the press frame (3) can be separated from each other. It absorbs the difference in the amount of expansion and contraction due to the temperature difference.

FIGS. 3 and 4 show a second embodiment in the case of guiding on three surfaces. Similar to the first embodiment, the guide post (16) rotatably attached to the slide (2) has three guide surfaces. A holder (21) is attached by spacers (18), a guide retainer (20) and a ring (19) on the guide sleeves (17) attached at the four corners of the press frame (3). A cylindrical rolling element (23) is provided in the holder (21), and a guide (22) is fitted and provided therein to guide the reciprocating movement of the guide post (16). Further, in order to absorb the difference in expansion and contraction amount due to the temperature difference, a holder (21) whose outer peripheral surface is parallel to the spacer (18) is fitted into the spacer (18) and has a ring (19) with one side surface. Guided by, it is movable in the radiation direction in the same arrangement as in the first embodiment.

The present embodiment can be applied and expanded to increase the number of guide surfaces, or the guide sleeve (9) or (17) can be attached to the bolster (15) for use.

[0009]

EFFECTS OF THE INVENTION According to the present invention, unlike the conventional plain guide type and ball guide type, the line of the cylindrical rolling element and the guide surface are in contact with each other, the rigidity against lateral force is high, and the temperature difference is high. Since excessive bending stress is not applied to the guide posts, rollers and guides, heat generation is reduced, high accuracy can be maintained for a long time, and high-speed operation of the press machine is supported.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part configuration diagram of a two-sided guide of a slide guide device of the present invention.

FIG. 2 is a plan view showing the configuration of essential parts in the case of a two-sided guide of the slide guide device of the present invention.

FIG. 3 is a sectional view showing the configuration of the main part of a slide guide device of the present invention in the case of a three-sided guide.

FIG. 4 is a plan view of a main portion configuration diagram of a slide guide device of the present invention in the case of a three-sided guide.

[Explanation of symbols]

1 is a slide guide device, 2 is a slide, 3 is a press frame, 4 is an end plate, 5 is a thrust cylindrical roller bearing, 6 is a needle roller bearing, 7 is a spacer, 8 is a guide post, 9 is a guide sleeve, and 10 is a guide. Retainer, 11 is a pull bolt, 12 is a push bolt, 13 is a guide, 14 is a rolling element, 15 is a bolster, 16 is a guide post, 17 is a guide sleeve, 18 is a spacer, 19 is a ring, 20 is a guide retainer, 21 is a A holder, 22 is a guide, and 23 is a rolling element.

Claims (3)

[Scope of utility model registration request] 1. A guide post type slide guide device for guiding the reciprocating motion of a slide of a press machine, a guide post having an upper end rotatably attached to a slide of the press machine, and a plurality of guide surfaces, and a press. A plurality of guides, which are arranged on the upper surface of the frame at the same level as the moving plane of the work piece and provided with the same number of guide surfaces as the guide posts on the inner surface, are arranged at equal radial positions from the slide center in the radial direction. A slide guide device, characterized in that a cylindrical rolling element is interposed between the surface and the guide surface of the guide. 2. The guide posts and the guide surfaces of the guides, which are arranged at equal distances from the slide center in the radial direction, are constituted by two surfaces parallel to the radial direction. Item 1. A slide guide device according to item 1. 3. The guide posts and guides arranged at equal radial positions in the radial direction from the slide center have three or more guide surfaces, and the guide provided in the guide retainer is movable in the radial direction. The slide guide device according to claim 1, wherein