Precise sliding table transmission mechanism

Abstract

The utility model discloses a precise sliding table transmission mechanism, which comprises a lathe bed and a sliding table doing linear motion on the lathe bed, the two sides of the sliding table are arranged on the lathe bed, and the two sides of the sliding table are connected with the lathe bed through ball splines; the two sides of the sliding table are respectively provided with two seat holes, the ball spline housing is fixed in the seat holes, the ball spline shaft penetrates through the seat holes and the spline housing and is fixed on the supporting seat, the supporting seat is fixed on the lathe bed, a roller path is arranged in the ball spline housing, and balls are arranged in the roller path, so that gapless sliding between the ball spline housing and the ball spline shaft is achieved through the balls. Compared with an installation guide sliding plate type sliding table structure in the prior art, the gap between the ball and the roller path can be smaller, so that the movement precision of the sliding table is greatly improved, and the structure is convenient to install, maintain and check and has good interchangeability.

Description

Technical Field

[0001] The utility model relates to the technical field of slide transmission of a forming machine, in particular to a precision slide transmission mechanism using a ball spline. Background Art

[0002] In the current existing technology, the slide of the forming machine generally adopts guide plates installed on both sides and above and below the moving pair to provide guidance. The linear motion error generated by the slide mainly comes from the matching clearance between the guide plate and the slide, which directly affects the forming accuracy of the product; in order to improve the motion accuracy of the slide, a secondary guide rail is often set, which makes the overall structure of the slide and the bed complicated, and the sliding friction generated by the slide pair formed by the guide plate and the secondary guide rail is also relatively large, which is not conducive to the sliding of the slide. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and to provide a precision slide transmission mechanism which reduces the linear motion error of the slide during the linear reciprocating motion and improves the product forming accuracy.

[0004] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0005] To reduce the impact of the slide's weight on its movement, a support structure is provided between the slide's bottom and the bed. The support structure includes a guide plate fixed to the bed and a flat roller bearing fixed to the slide's bottom corresponding to the guide plate. The flat roller bearing fixed to the slide's bottom can be provided with a bearing support at the slide's bottom, with the flat roller bearing mounted on the bearing support. A second adjustment pad can also be provided on the bearing support to facilitate adjustment of the flat roller bearing's vertical clearance and horizontal position in the direction of movement. Alternatively, the guide plate can be provided at the slide's bottom, the bearing support can be provided on the bed, and the flat roller bearing can be provided on the bearing support.

[0006] The precision slide transmission mechanism designed in this utility model utilizes a ball spline for guidance. In combination with the drive characteristics of the forming machine, the driving force acting on the slide is not parallel to the spline shaft, but rather has a vertical downward component. Therefore, a support structure is provided at the bottom of the slide to balance this component, improving structural rigidity while reducing the load on the ball spline and extending the spline's service life. In a ball spline, rolling friction between the balls and the raceway is significantly reduced compared to the sliding friction generated by the existing slide pair. As a result, the overall motion resistance of the slide is reduced, and the required driving force and heat generation are significantly reduced, enabling high-speed and smooth linear motion.

[0007] Compared to existing slide structures using guide plates, the slide mechanism designed in this utility model achieves a smaller gap between the ball bearings and the raceway, significantly improving the slide's motion accuracy and, consequently, the product's forming precision. Conventional slides require auxiliary guide rails to enhance motion accuracy, which complicates the overall structure of the slide and bed. This mechanism eliminates the need for auxiliary guide rails, reducing the manufacturing and assembly costs of the slide and guide plates while also simplifying and simplifying the design of the lubrication system. The structure also facilitates installation, maintenance, and inspection, and offers excellent interchangeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0009] Figure 2 yes Figure 1 A side structural diagram of

[0010] Figure 3 yes Figure 1 Schematic diagram of the top view structure;

[0011] Figure 4 1. It is a schematic structural diagram of a ball spline embodiment;

[0012] Figure 5 It is a schematic diagram of the supporting structure of Example 2.

[0013] Among them: bed 1, slide 2, ball spline 3, seat hole 4, ball spline sleeve 5, ball spline shaft 6, support seat 7, end cover 8, raceway 9, ball 10, first adjustment plate 11, support structure 12, guide slide 13, plane roller bearing 14, bearing support 15, second adjustment pad 16. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0015] Example 1:

[0016] As Figure 1 , Figure 2 , Figure 3 shown, the embodiment describes a precision slide drive mechanism, which includes a bed 1 and a slide 2 moving linearly on the bed 1, the slide 2 is placed on both sides of the bed, and is connected between the slide 2 and the bed 1 through a ball spline 3; the slide 2 and the bed 1 are connected through the ball spline 3, two seat holes 4 are arranged on both sides of the slide 2, a ball spline sleeve 5 is fixed in the seat hole 4, a ball spline shaft 6 passes through the ball spline sleeve 5 in the seat hole 4 and is fixed on a support seat 7, the support seat 7 is fixed on the bed 1, end covers 8 are arranged at both ends of the ball spline shaft 6 and are fixed on the support seat 7 to prevent the ball spline shaft 6 from moving axially when the mechanism is running; as Figure 4 shown, a raceway 9 is arranged in the ball spline sleeve 5, and a ball 10 is arranged in the raceway 9, so that the ball spline sleeve 5 and the ball spline shaft 6 realize gapless sliding through the ball 10; so that the slide 2 moves linearly and reciprocally on the bed 1 through the ball spline 3; a first adjusting plate 11 is arranged on the support seat 7 to adjust the horizontal distance between the slide 2 and the bed 1 and the center distance between the support seat 7, so that the slide 2 moves smoothly.

[0017] Embodiment 2:

[0018] As Figure 5 shown, in order to reduce the influence of the weight of the slide 2 on sliding when the slide 2 moves, a support structure 12 is arranged between the bottom of the slide 2 and the bed 1, the support structure 12 includes a guide slide plate 13 fixed on the bed 1 and a plane roller bearing 14 fixed on the bottom of the slide 2 corresponding to the guide slide plate 13; the plane roller bearing 14 fixed on the bottom of the slide 2 can be a bearing support 15 arranged on the bottom of the slide 2, and the plane roller bearing 14 is installed on the bearing support 15; a second adjusting pad plate 16 can also be arranged on the bearing support 15 to facilitate adjusting the up-down gap distance and the horizontal position of the movement direction of the plane roller bearing 14 and the guide slide plate 13. Here, as Figure 1 , Figure 2 shown, the guide slide plate 13 is arranged on the bottom of the slide 2, the bearing support 15 is arranged on the bed 1, and the plane roller bearing 14 is arranged on the bearing support 15. The support structure 12 is arranged on the bottom of the slide to balance the vertical downward component force received by the slide 2 when working, improve the rigidity of the structure of the slide 2, reduce the load of the ball spline 3, and prolong the service life of the ball spline 3.

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A precision slide transmission mechanism, comprising a bed (1) and a slide (2) for linear motion on the bed (1), characterized in that The two sides of the slide (2) are placed on the bed, and the two sides of the slide (2) are connected to the bed (1) through ball splines (3); the ball splines (3) include ball spline sleeves (5), ball spline shafts (6) and balls (10); the two sides of the slide (2) are connected to the bed (1) through the ball splines (3), and two seat holes (4) are respectively provided on the two sides of the slide (2); the ball spline sleeves (5) are fixed in the seat holes (4); the ball spline shafts (6) pass through the seat holes (4) and the ball spline sleeves (5) and are fixed on the support seat (7); the support seat (7) is fixed on the bed (1); and end covers (8) fixed on the support seat (7) are provided at both ends of the ball spline shaft (6).

2. A precision slide transmission mechanism according to claim 1, characterized in that A raceway (9) is provided in the ball spline sleeve (5), and gapless sliding is achieved between the ball spline sleeve (5) and the ball spline shaft (6) via the balls (10); thereby, the slide (2) performs linear reciprocating motion on the bed (1) via the ball spline (3).

3. A precision slide transmission mechanism according to claim 1 or 2, characterized in that A first adjustment plate (11) is provided on the support seat (7) to adjust the level between the slide (2) and the bed (1) and the center distance between the support seats (7).

4. A precision slide transmission mechanism according to claim 1 or 2, characterized in that A support structure (12) is provided between the bottom of the slide (2) and the bed (1), and the support structure (12) includes a guide slide (13) fixed on the bed (1) and a plane roller bearing (14) fixed to the bottom of the slide (2) corresponding to the guide slide (13); the plane roller bearing (14) fixed to the bottom of the slide (2) can be a bearing support (15) provided at the bottom of the slide (2), and the plane roller bearing (14) is installed on the bearing support (15); a second adjustment pad (16) is provided on the bearing support (15) for adjusting the upper and lower gap distances and the horizontal position of the movement direction between the plane roller bearing (14) and the guide slide (13).

5. A precision slide transmission mechanism according to claim 3, characterized in that A support structure (12) is provided between the bottom of the slide (2) and the bed (1), and the support structure (12) includes a guide slide (13) fixed on the bed (1) and a plane roller bearing (14) fixed to the bottom of the slide (2) corresponding to the guide slide (13); the plane roller bearing (14) fixed to the bottom of the slide (2) can be a bearing support (15) provided at the bottom of the slide (2), and the plane roller bearing (14) is installed on the bearing support (15); a second adjustment pad (16) is provided on the bearing support (15) for adjusting the upper and lower gap distances and the horizontal position of the movement direction between the plane roller bearing (14) and the guide slide (13).

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