CS264179B1 - Recirculating one-side unit with balls - Google Patents

Abstract

The solution relates to recirculation unilateral units with balls for profile and planar guide surfaces. Recirculation unit consists of a support body to which there are heads attached to both sides. A lower track is formed in the support body bullets and the top of the spheres. They are in their heads an arc recess formed and in place the contacts of the heads with the support body are stored cylinders forming an inner arc of the lower and lower the upper spheres of the spheres.

Description

BACKGROUND OF THE INVENTION The invention relates to a recirculating one-sided ball unit for profile and planar guide surfaces.

Devices providing operation in the x, y and z planes with a requirement for guidance accuracy on guide surfaces with a profile surface shape are solved in different ways with the help of other members.

The rolling guides according to the arrangement are open and closed. Their use is distinguished from the point of capture of force and torque effects. In the x, y plane, 1 'arbitrary loads transmit both force and torque up to the bearing capacity of the rolling elements. The axial load is transmitted by the displacement mechanism. In terms of construction, rolling guides are designed according to the requirements for small, large and unlimited strokes. Lines for small strokes have movable lines as long as static - foundation lines. Movement members - balls are stored in cages secured against running out of the track. The lines for unlimited strokes are substantially shorter in the opposite position to the static foundation lines, and in the classical transmission, the movement members - bullets exceed the length of the movable guide. The balls are in the cage and this is secured against the escape of the guide track. Rolling nests and rollers used in machine tools are the most widespread. The essence is their stiffness. They are of several types and are divided into rolling single-sided and double-sided nests, which are used for planar guide surfaces. The disadvantage of a guide for limited strokes, whose rolling elements are all along the track between the two guides, but with the same rolling track lengths, when moving the maximum stroke, the moving track gets V2 of its length outside the rolling elements, thus preventing the guide from shifting more. moment in the plane x, z. The disadvantage of unlimited stroke guides when using recirculating rolling elements is that they are mainly used for heavy loads and tilting moments on unlimited strokes and for flat guides where closed and biased rolling guides need to be formed, which are relatively complicated and expensive to manufacture.

The advantage of the recirculating single-sided unit with bullets is its versatility for profile and planar guide surfaces, while being inexpensive to manufacture. It is also advantageous that the unit makes it possible to form a coordinate gallery with a rolling guide for small strokes as well as rolling guides for unlimited strokes with a reduced demand for other members such as ball cages.

The recirculating one-sided bullet unit is shown by way of example in the accompanying drawings, in which: FIG. 1 is a partial cross-sectional front view of the recirculation unit; FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 3 is a cross-sectional view taken along line B-- B of FIG. 1, FIG. 4 is a view taken in the direction P of FIG. 1, FIG. 5 is a planar surface recirculation unit; FIG. 6 is a cross-sectional view taken along line A-A in FIG. 5, FIG. 7 is a cross-sectional view taken along line B-- B of FIG. 5 and FIG. 8 is a side view of FIG. 5th

The recirculating one-sided ball unit consists of a support body 1, to which heads 3a, 3b are connected from both sides by screws 5, 9 and pins 6. In the support body 1 is formed a lower path 14 of balls 7 and an upper path 15 of balls 7. In the heads 3a, 3b arcuate recesses 16 are formed. At the point of contact of the heads 3a, 3b with the support body 1 The lower portion of the heads 3a, 3b has an inlet of the lower track 16 formed at an axis angle of 15 °. The lower path 14 of the balls 7 is closed by the closure member 4. The upper path 15 has a formed part which is closed by a capsule 8 with a lubrication opening 13. The balls 7 are guided with a scent, for example as bearings. On the fronts, the recirculation unit is provided with dirt wipers 10 which are fastened by a clip 11 and a screw 10.

The function of the recirculating one-sided ball unit is as follows: After the recirculation unit has been installed in the device, it moves in the indicated direction of the profile path, where the balls 7 roll on the guide flat, thereby securing the ball. the smooth operation of the supported part, for example an adit to which they are incorporated. The recirculation unit can be used for bidirectional operation. The balls 7 should be lubricated with a fine oil.

Claims (2)

OBJECT Recirculating one-sided ball unit, characterized in that it consists of a support body (1j, to which heads (3a, 3b) are connected from both sides), wherein a bottom track (14) of balls (7) is formed in the support body (1). ) and the upper track (5) of the balls (7), while in the heads (3a, 3b) there are arcuate recesses (16) and cylinders (2) are placed at the point of contact of the heads (3a, 3b) with the support body (1). ) forming an inner arc of the bottom and top tracks (14, 15) of the balls (7). 2 sheets of drawings 264179 FIG. 2 FIG. 3 FIG. 4 264179 FIG. 6 FIG. 7 0 & & Severografia, n. P., Závod 7, Most Price 2,40 Kcs