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CN-224214572-U - Pretensioning mechanism of high-rigidity linear guide rail

CN224214572UCN 224214572 UCN224214572 UCN 224214572UCN-224214572-U

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a pre-tightening mechanism of a high-rigidity linear guide rail, which comprises two mutually symmetrical linear guide rail main bodies, wherein a central fixing block is fixedly arranged at the middle position of each linear guide rail main body, a trapezoid clamping groove is formed in the upper surface of each central fixing block, two mutually symmetrical rectangular limiting rods are arranged between the two linear guide rail main bodies, a central clamping block is fixedly arranged between each two rectangular limiting rods, the central clamping block is matched with the trapezoid clamping groove in a clamping way, the end part of each rectangular limiting rod is fixedly provided with an end limiting plate, the end limiting plates are abutted against the end face of each linear guide rail main body, inner supporting ribs abutted against the inner side faces of each linear guide rail main body are fixedly arranged on the front side face and the rear side face of each rectangular limiting rod, a bolt plate is fixedly arranged on the side face of each end limiting plate, and the bolt plate is detachably arranged on an external frame. The utility model has firm and stable structure and better anti-loosening effect.

Inventors

  • LI GUOTUAN
  • LI TIANXI

Assignees

  • 广州权硕机电设备有限公司

Dates

Publication Date
20260508
Application Date
20250711

Claims (8)

  1. 1. The pre-tightening mechanism of the high-rigidity linear guide rail comprises two linear guide rail main bodies (1) which are symmetrical to each other, and is characterized in that central fixing blocks (11) are fixedly arranged at the middle positions of the two linear guide rail main bodies (1), trapezoid clamping grooves (12) are formed in the upper surfaces of the central fixing blocks (11), two rectangular limiting rods (2) which are symmetrical to each other are arranged between the two linear guide rail main bodies (1), central clamping blocks (23) are fixedly arranged between the two rectangular limiting rods (2), the central clamping blocks (23) are matched with the trapezoid clamping grooves (12) in a clamping mode, end limiting plates (22) are fixedly arranged at the end portions of the rectangular limiting rods (2), inner supporting ribs (20) which are propped against the inner side surfaces of the linear guide rail main bodies (1) are fixedly arranged on the front side surfaces and the rear side surfaces of the rectangular limiting rods (2), screw plates (221) are fixedly arranged on the side surfaces of the end limiting plates (22), and the detachable bolt plates (221) are arranged on the detachable frame.
  2. 2. The pre-tightening mechanism of the high-rigidity linear guide rail according to claim 1, wherein the linear guide rail main body (1) and the central fixing block (11) are of an integrated structure, and the cross section of the trapezoid clamping groove (12) is trapezoid.
  3. 3. The pretensioning mechanism for high rigidity linear guide rail according to claim 1, characterized in that the cross section of the center clamping block (23) is also trapezoid, and the size of the center clamping block (23) is adapted to the size of the trapezoid clamping groove (12).
  4. 4. The pre-tightening mechanism of the high-rigidity linear guide rail according to claim 1, wherein a chute (10) is arranged in the linear guide rail main body (1), and the chute (10) is arranged along the length direction of the linear guide rail main body (1).
  5. 5. The pretensioning mechanism for a high rigidity linear guide rail according to claim 1, wherein side gaps (13) are provided on both sides of the center fixing block (11), and the inner support rib (20) is located in the side gaps (13).
  6. 6. The pre-tightening mechanism of the high-rigidity linear guide rail according to claim 1, wherein a plurality of fixing lugs (15) are fixedly arranged on the side face of the linear guide rail main body (1), and the fixing lugs (15) are fixedly arranged on an external frame body through a plurality of fastening bolts.
  7. 7. The pre-tightening mechanism of the high-rigidity linear guide rail according to claim 5, wherein a first inclined plane (201) is arranged on the side surface of the inner supporting rib (20), second inclined planes (231) are arranged on the front side surface and the rear side surface of the central clamping block (23), and a third inclined plane (24) is arranged on the end surface, close to the central clamping block (23), of the two rectangular limiting rods (2).
  8. 8. The pre-tightening mechanism of the high-rigidity linear guide rail according to claim 1, wherein rectangular clamping grooves (14) are formed in the side surfaces, close to each other, of the two linear guide rail main bodies (1), inner clamping blocks (21) are fixedly mounted on the side surfaces of the inner supporting ribs (20), and the inner clamping blocks (21) are located in the rectangular clamping grooves (14) and are in clamping fit with the rectangular clamping grooves (14).

Description

Pretensioning mechanism of high-rigidity linear guide rail Technical Field The utility model relates to the technical field of linear guide rails, in particular to a pre-tightening mechanism of a high-rigidity linear guide rail. Background The linear guide rail is used as a key component for realizing high-precision linear motion in mechanical equipment, the performance of the linear guide rail directly influences the machining precision, the running stability and the service life of the equipment, and in a plurality of application scenes, such as machine tools, automatic production lines, semiconductor manufacturing equipment and the like, the rigidity and the precision requirements on the linear guide rail are increasingly improved. At present, linear guide rail on the market has some defects in the pre-tightening mode, and the traditional pre-tightening mode is difficult to stably fasten, so that the guide rail is easy to loose in the actual operation process, when the pre-tightening force is insufficient, the rigidity of the guide rail is reduced, vibration and displacement are easy to generate when the guide rail bears a large load or moves at a high speed, and the processing precision and stability of equipment are seriously affected. In addition, most of the existing pre-tightening mechanisms are complex in structure, complicated in installation and debugging processes and required to be operated by professional technicians, so that the installation cost and maintenance difficulty of equipment are increased, and the application of the linear guide rail in occasions with high requirements on installation space and operation convenience is limited. Therefore, the development of the pretensioning mechanism of the high-rigidity linear guide rail, which has a simple structure and is easy to install and debug, has important significance for improving the performance of the linear guide rail and meeting the requirements of modern mechanical equipment on high precision and high stability. Disclosure of utility model The present utility model aims to provide a pretensioning mechanism for a high-rigidity linear guide rail, which solves the above-mentioned drawbacks of the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a high rigidity linear guide's pretension mechanism, includes two mutual symmetry's linear guide main part, two the middle part position department fixed mounting of linear guide main part has central fixed block, be provided with trapezoidal draw-in groove on the upper surface of central fixed block, two be provided with two mutual symmetry's rectangle gag lever post between the linear guide main part, two fixed mounting has central fixture block between the rectangle gag lever post, central fixture block with joint cooperation between the trapezoidal draw-in groove, the tip fixed mounting of rectangle gag lever post has the tip limiting plate, the tip limiting plate supports on the terminal surface of linear guide main part, all fixed mounting is in on the front and back both sides face of rectangle gag lever post supports the interior supporting rib on the linear guide main part medial surface, fixed mounting has the bolt board on the side of tip limiting plate, the detachable mounting of bolt board is on external support body. Preferably, the linear guide rail main body and the central fixed block are of an integrated structure, and the section of the trapezoid clamping groove is trapezoid. Preferably, the cross section of the central clamping block is also trapezoid, and the size of the central clamping block is matched with the size of the trapezoid clamping groove. Preferably, a sliding groove is arranged in the linear guide rail main body, and the sliding groove is arranged along the length direction of the linear guide rail main body. Preferably, side gaps are formed in two sides of the central fixing block, and the inner supporting ribs are located in the side gaps. Preferably, a plurality of fixing lugs are fixedly arranged on the side face of the linear guide rail main body, and the fixing lugs are fixedly arranged on the external frame body through a plurality of fastening bolts. Preferably, the side surfaces of the inner supporting ribs are provided with first inclined surfaces, the front side surface and the rear side surface of the central clamping block are provided with second inclined surfaces, and the end surfaces of the two rectangular limiting rods, which are close to the central clamping block, are provided with third inclined surfaces; this arrangement makes the snap fit assembly smoother. Preferably, rectangular clamping grooves are formed in the side surfaces, close to each other, of the two linear guide rail main bodies, an inner clamping block is fixedly mounted on the side surface of the inner supporting rib, and the inner clamping block is located in the rectangular cl