Hard Wide Guide Rail for High-Speed Rapid Traverse of Machining Center Feed Axis

Abstract

The present invention relates to a hard wide guide rail for high-speed rapid traverse of the feed axis of a machining center, and its structure is as follows: on both sides of the carriage are symmetric vertical bent edge structures, on the lower surface of the carriage are provided two groups of four auxiliary support mechanisms in total, and on the inner surface of each vertical bent edge structure is provided a group of two auxiliary support mechanisms; the auxiliary support mechanisms on the lower surface of the carriage are in rolling contact with the upper surface of the steel hard wide guide rail at the corresponding positions, and the auxiliary support mechanisms of the vertical bent edge structure are in rolling contact with the outer surface of the steel hard wide guide rail; a 3-mm glue injection reserved gap is reserved between the contact surface of the steel hard wide guide rail and the carriage, and the gap is filled with a glue layer by glue injection on the inner surface of the carriage. This hard wide guide rail adopts a rolling body auxiliary support structure, reducing the friction between the carriage and the guide rail. At the same time, the glue layer formed by the glue injection process contacts the steel hard wide guide rail, which can not only improve the feed speed on the premise of meeting the requirements of heavy-duty cutting, but also has good shock absorption effect and can improve the machining accuracy.

Description

Technical Field

[0001] The present invention relates to a hard wide guide rail for high-speed rapid traverse of a feed axis of a machining center, belonging to the core drive technology field of heavy-duty horizontal machining center machine tools. Background Art

[0002] At present, the guide rails of heavy-duty horizontal machining centers on the market generally adopt the form of hard wide guide rails. This structure has strong load-bearing capacity and high rigidity, and is especially suitable for heavy cutting of parts with a large metal removal rate. However, due to the structural limitations of the hard wide rails, the sliding contact area is large, resulting in large frictional force, and it is difficult to achieve rapid movement of the feed axis of the machine tool. The highest rapid traverse speed of the horizontal machining center in the form of hard wide rails on the market is 16 m / min, which seriously affects the machining efficiency of the machine tool. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hard wide guide rail for high-speed rapid traverse of a feed axis of a machining center. The hard wide guide rail adopts a rolling body auxiliary support structure, which reduces the friction between the slide and the guide rail. At the same time, the glue layer formed by the glue injection process contacts the steel hard wide guide rail. Not only can the heavy cutting requirements be met, but also the feed speed is increased, and the shock absorption effect is good, which can improve the machining accuracy.

[0004] To solve the above problems, the specific technical solution of the present invention is as follows: A hard wide guide rail for high-speed rapid traverse of a feed axis of a machining center. Two parallel steel hard wide guide rails are arranged on the installation base surface of the machining center, and a slide is slidably connected to the steel hard wide guide rails; on both sides of the slide are symmetric vertical bent edge structures, and two groups of a total of four auxiliary support mechanisms are provided on the lower surface of the slide, and one group of two auxiliary support mechanisms is provided on the inner surface of each vertical bent edge structure; the auxiliary support mechanisms on the lower surface of the slide are in rolling contact with the upper surface of the corresponding steel hard wide guide rail, and the auxiliary support mechanisms of the vertical bent edge structure are in rolling contact with the outer surface of the steel hard wide guide rail; a 3-mm glue injection reserved gap is reserved between the contact surfaces of the steel hard wide guide rail and the slide, and the glue layer is filled through glue injection on the inner surface of the slide.

[0005] The specific structure of the auxiliary support mechanism is as follows: A longitudinal adjustment plate I is fixedly connected above the roller circulating slider, and a longitudinal adjustment plate II is slidably connected to the upper surface of the longitudinal adjustment plate I. The contact surface between the longitudinal adjustment plate I and the longitudinal adjustment plate II is an inclined surface; a positioning plate is jointly arranged at the ends of the longitudinal adjustment plate I and the longitudinal adjustment plate II, and the positioning plate is fixedly connected to the slide; two rows of vertical long holes are provided on the positioning plate, and connecting bolts pass through the long holes and are respectively connected to the corresponding longitudinal adjustment plate I or longitudinal adjustment plate II; threaded holes are vertically distributed in the middle of the positioning plate, and an adjusting screw is threadedly connected to the threaded hole, and the end surface of the adjusting screw passes through the threaded hole and abuts against the end surface of the corresponding longitudinal adjustment plate I or longitudinal adjustment plate II.

[0006] The upper surface of the longitudinal adjustment plate II is provided with a glue filling frame, and the glue filling frame is a box-shaped structure with an upper opening.

[0007] Horizontal positioning pressure plates are connected to the vertical bent edges on both sides of the sliding seat. The upper surface of the positioning pressure plate is provided with a glue filling groove arranged along the length direction. The glue filling groove is filled with colloid, and the colloid filled in the positioning pressure plate contacts the bottom surface of the steel hard wide guide rail; several pressure plate lubrication ports are arranged on the upper surface of the colloid, and a main lubrication pipeline is arranged directly below the glue filling groove, and the pressure plate lubrication ports communicate with the main lubrication pipeline.

[0008] The bottom surface of the sliding seat is provided with a glue filling groove, and the glue filling groove is filled with colloid. Several pressure plate lubrication ports are arranged on the upper surface of the filled colloid, and the colloid filled in the sliding seat contacts the upper surface of the steel hard wide guide rail.

[0009] The surface of the glue filling groove adopts a sawtooth surface structure with 2×45° arranged evenly at equal intervals.

[0010] The hard wide guide rail for the high-speed rapid traverse of the feed axis of the machining center in this application adopts the above structure, and has the following advantages:

[0011] 1. The steel hard wide guide rail and the sliding seat are supported by a rolling body auxiliary support mechanism, aiming to reduce the friction force of the sliding contact surface and reduce the driving load of the feed axis;

[0012] 2. The steel hard wide guide rail and the sliding seat are supported by a rolling body auxiliary support mechanism, and a gap of 3 mm is reserved, aiming to adopt a new glue filling process to form a glue layer on the sliding seat surface as the contact surface. This structure replaces the original plastic coating process on the sliding seat contact surface, which can effectively ensure the contact rigidity and contact rate with the guide rail, thereby further reducing the friction resistance and playing a role in reducing the driving load of the feed axis;

[0013] 3. The rolling body auxiliary support mechanism in this invention adopts an adjustable inclined surface structure, which can effectively ensure the gap between the rolling body and the steel hard wide guide rail and ensure the stability of the structure.

[0014] The same new glue filling process is also adopted between the positioning pressure plate and the steel hard wide guide rail in this application, so that the gap between the pressure plate and the guide rail can be realized according to the process requirements, ensuring the contact strength and contact rate. At the same time, compared with the plastic coated surface, the friction resistance is small, indirectly reducing the driving load of the feed axis. The structure of this application can achieve a rapid traverse speed of 30 m / min, which is nearly doubled compared with the horizontal machining centers of the same specification in the market. While meeting the heavy cutting of the machine tool, it greatly improves the machining efficiency of the machine tool. It breaks through the technical barrier that the rapid traverse speed of the hard wide rail type transmission structure cannot be improved. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of this application.

[0016] Figure 2 This is a schematic diagram of the layout of the rolling element auxiliary support mechanism for this application.

[0017] Figure 3 This is a front schematic diagram of the layout of the rolling element auxiliary support mechanism for this application.

[0018] Figure 4 is Figure 3 an enlarged view of part Ⅰ in

[0019] Figure 5 This is a schematic diagram of the rolling element auxiliary support mechanism (without connection by adjusting screws and connecting bolts).

[0020] Figure 6 This is a connection schematic diagram of the rolling element auxiliary support mechanism.

[0021] Figure 7 This is a schematic diagram of the positioning pressure plate structure for this application.

[0022] In the figure, 1 is the guide rail installation base surface; 2 is the steel hard wide guide rail; 3 is the rolling element auxiliary support mechanism; 4 is the slide base; 5 is the positioning pressure plate; 7 is the reserved gap for potting; 8 is the positioning plate; 9 is the potting frame; 10 and 11 are the longitudinal adjustment plates; 12 is the roller circulating slider; 14 is the long slot; 15 is the threaded hole; 16 is the connecting bolt; 17 is the adjusting bolt; 21 is the potting groove; 22 is the lubrication port of the pressure plate; 23 is the main lubrication pipeline. Detailed implementation manners

[0023] As Figures 1 to 4 shown, for a hard wide guide rail with high-speed rapid movement of the feed axis of a machining center, two parallel steel hard wide guide rails 2 are arranged on the installation base surface 1 of the machining center, and a slide base 4 is slidably connected to the steel hard wide guide rail 2; both sides of the slide base 4 are symmetric vertical flanging structures, and two groups of four auxiliary support mechanisms 3 are provided on the lower surface of the slide base 4, and one group of two auxiliary support mechanisms 3 is provided on the inner surface of each vertical flanging structure; the auxiliary support mechanisms 3 on the lower surface of the slide base 4 are in rolling contact with the upper surface of the corresponding steel hard wide guide rail 2, and the auxiliary support mechanisms 3 of the vertical flanging structure are in rolling contact with the outer surface of the steel hard wide guide rail 2; a reserved gap of 3 mm for potting 7 is reserved between the contact surfaces of the steel hard wide guide rail 2 and the slide base 4, and it is filled with a potting glue layer on the inner surface of the slide base 4. Both ends in the running direction of the slide base 4 are in rigid contact with the steel hard wide guide rail 2 through the auxiliary support mechanisms 3, and the middle is in contact with the steel hard wide guide rail 2 through the glue layer, which can reduce the frictional resistance between the hard wide guide rail and the moving parts while ensuring the strength of the contact surface of the hard wide guide rail, thereby improving the rapid movement speed of the driving moving parts.

[0024] As Figures 5 to 6As shown in the figure, the specific structure of the auxiliary support mechanism 3 is as follows: A longitudinal adjustment plate I11 is fixedly connected above the roller recirculating slider 12. The upper surface of the longitudinal adjustment plate I11 is slidably connected with a longitudinal adjustment plate II10, and the contact surface between the longitudinal adjustment plate I11 and the longitudinal adjustment plate II10 is an inclined surface. A positioning plate 8 is jointly arranged at the ends of the longitudinal adjustment plate I11 and the longitudinal adjustment plate II10, and the positioning plate 8 is fixedly connected with the slide base 4. The positioning plate 8 is provided with two rows of vertical long holes 14 up and down. Connecting bolts 16 pass through the long holes 14 and are respectively connected with the longitudinal adjustment plate I11 or the longitudinal adjustment plate II10 at the corresponding positions. Threaded holes 15 are arranged up and down in the middle of the positioning plate 8. An adjusting screw 17 is threadedly connected with the threaded hole 15, and the end face of the adjusting screw 17 passes through the threaded hole 15 and abuts against the end face of the corresponding longitudinal adjustment plate I11 or longitudinal adjustment plate II10. The roller recirculating slider 12 is an externally purchased part, purchased from SCHNEEBERGER company, with the model NRV26111, and its front end has a lubrication interface, which can continuously supply lubrication to the rollers in the roller recirculating slider 12. Through the inclined surface matching structure of the longitudinal adjustment plate I11 and the longitudinal adjustment plate II10, by continuously rotating the adjusting screw 17, the corresponding longitudinal adjustment plate I11 or longitudinal adjustment plate II10 is slightly pushed outwards. When the longitudinal adjustment plate I11 or the longitudinal adjustment plate II10 generates relative movement, the relative height between the roller recirculating slider 12 and the bottom surface of the slide base 4 is adjusted. After the adjustment is completed, the positioning plate 8 is connected and fastened by the connecting bolts 16. When the height adjustment is completed, a glue filling frame 9 is arranged on the upper surface of the longitudinal adjustment plate II10. The glue filling frame 9 is a box-shaped structure with an open upper part. Glue is filled into the box-shaped structure to achieve gluing.

[0025] As Figure 2 shown, horizontal positioning pressing plates 5 are connected to the vertical bent edges on both sides of the slide base 4. The upper surface of the positioning pressing plate 5 is provided with glue filling grooves 21 arranged along the length direction. Colloid is filled in the glue filling grooves 21, and the colloid filled in the positioning pressing plate 5 contacts the bottom surface of the steel hard wide guide rail 2. A plurality of pressing plate lubrication ports 22 are arranged on the upper surface of the colloid, and a main lubrication pipeline 23 is arranged directly below the glue filling groove 21. The pressing plate lubrication ports 22 communicate with the main lubrication pipeline 23. Through the pressing plate lubrication ports 22, sufficient lubrication between the contact surfaces is ensured, the frictional resistance is reduced, and thus the moving speed between the steel hard wide guide rail 2 and the slide base 4 is increased.

[0026] As Figure 7 shown, the bottom surface of the slide base 4 is provided with glue filling grooves 21. Colloid is filled in the glue filling grooves 21. A plurality of pressing plate lubrication ports 22 are arranged on the upper surface of the filled colloid, and the colloid filled in the slide base 4 contacts the upper surface of the steel hard wide guide rail 2.

[0027] The surface of the glue injection tank 21 adopts a sawtooth surface structure with 2×45° arranged evenly at equal intervals, which is beneficial to the firm and reliable connection between the glue and the sliding seat, replaces the original plastic coating process, is easy to operate, and has high wear resistance of the glue surface.

Claims

1. A hard wide guide rail for high-speed rapid traverse of the feed axis of a machining center, characterized in that: Two parallel steel hard wide guide rails (2) are arranged on the installation base surface (1) of the machining center, and a slide base (4) is slidably connected to the steel hard wide guide rails (2); symmetric vertical bent edge structures are respectively arranged on both sides of the slide base (4), and two groups of four auxiliary support mechanisms (3) are arranged on the lower surface of the slide base (4), and one group of two auxiliary support mechanisms (3) is arranged on the inner surface of each vertical bent edge structure; the auxiliary support mechanisms (3) on the lower surface of the slide base (4) are in rolling contact with the upper surface of the corresponding steel hard wide guide rails (2), and the auxiliary support mechanisms (3) of the vertical bent edge structures are in rolling contact with the outer surface of the steel hard wide guide rails (2); a glue filling reserved gap (7) of 3 mm is reserved between the contact surfaces of the steel hard wide guide rails (2) and the slide base (4), and the inner surface of the slide base (4) is filled with a glue layer through glue filling; The specific structure of the auxiliary support mechanism (3) is as follows: a longitudinal adjustment plate I (11) is fixedly connected above a roller circulating slider (12), a longitudinal adjustment plate II (10) is slidably connected to the upper surface of the longitudinal adjustment plate I (11), and the contact surface between the longitudinal adjustment plate I (11) and the longitudinal adjustment plate II (10) is an inclined surface; a positioning plate (8) is jointly arranged at the ends of the longitudinal adjustment plate I (11) and the longitudinal adjustment plate II (10), and the positioning plate (8) is fixedly connected to the slide base (4); two rows of vertical long strip holes (14) are arranged on the positioning plate (8), and connecting bolts (16) pass through the long strip holes (14) and are respectively connected to the longitudinal adjustment plate I (11) or the longitudinal adjustment plate II (10) at the corresponding positions; threaded holes (15) distributed up and down are arranged in the middle of the positioning plate (8), an adjusting screw (17) is threadedly connected to the threaded holes (15), and the end surface of the adjusting screw (17) passes through the threaded holes (15) and abuts against the end surface of the corresponding longitudinal adjustment plate I (11) or longitudinal adjustment plate II (10); Horizontal positioning pressure plates (5) are connected to the vertical bent edges on both sides of the slide base (4), a glue filling groove (21) arranged along the length direction is arranged on the upper surface of the positioning pressure plate (5), glue is filled in the glue filling groove (21), and the glue filled in the positioning pressure plate (5) is in contact with the bottom surface of the steel hard wide guide rail (2); a plurality of pressure plate lubrication ports (22) are arranged on the upper surface of the glue, and a main lubrication pipeline (23) is arranged directly below the glue filling groove (21), and the pressure plate lubrication ports (22) are communicated with the main lubrication pipeline (23); a glue filling groove (21) is arranged on the bottom surface of the slide base (4), glue is filled in the glue filling groove (21), a plurality of pressure plate lubrication ports (22) are arranged on the upper surface of the filled glue, and the glue filled in the slide base (4) is in contact with the upper surface of the steel hard wide guide rail (2).

2. The hard wide guide rail for high-speed rapid traverse of the feed axis of the machining center according to claim 1, wherein: A glue filling frame (9) is arranged on the upper surface of the longitudinal adjustment plate II (10), and the glue filling frame (9) is a box-shaped structure with an open upper part.

3. The hard wide guide rail for high-speed rapid traverse of the feed axis of the machining center according to claim 1, characterized in that: The surfaces of the glue filling grooves (21) on the upper surface of the positioning pressure plate (5) and the glue filling grooves (21) on the bottom surface of the slide base (4) adopt a 2×45° sawtooth surface structure with uniform and equidistant arrangement.

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