CN211192887U

CN211192887U - Guide rail anti-collision structure for machining center

Info

Publication number: CN211192887U
Application number: CN201922026819.6U
Authority: CN
Inventors: 黄金花
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-08-07
Anticipated expiration: 2029-11-22

Abstract

The utility model belongs to the field of machining centers, in particular to a guide rail anti-collision structure for a machining center, which comprises a guide rail body and a screw rod transmission mechanism, wherein a groove is formed in the center of the upper end surface of the guide rail body, the screw rod transmission mechanism is fixedly installed in the groove, a nut is connected to the screw rod transmission mechanism through a thread, and the screw rod transmission mechanism drives the nut to move back and forth; be equipped with the anticollision piece at the both ends of recess, can be when the nut removes guide rail body both ends, through first anticollision institution and nut contact, and follow the nut and rotate together, thereby slow down the translation rate of nut, and then through second anticollision institution and third anticollision institution, slow down the speed of nut in proper order, after the nut removed the buffer spring position, carry out final anticollision operation with the buffer spring contact, make the nut slow down at removal in-process speed, thereby protect buffer spring.

Description

Guide rail anti-collision structure for machining center

Technical Field

The utility model relates to a machining center field specifically is a guide rail anticollision structure for machining center.

Background

The guide rail is a groove or ridge made of metal or other materials, can bear, fix and guide a moving device or equipment and reduce friction of the moving device or equipment, is also called as a slide rail, a linear guide rail and a linear slide rail, is used for linear reciprocating motion occasions, has higher rated load than a linear bearing, can bear certain torque and can realize high-precision linear motion under the condition of high load. Longitudinal grooves or ridges on the surface of the guide rail for guiding, fixing machine parts, special equipment, instruments, etc.

Chinese patent discloses a guide rail buffer stop for machining center (grant publication number is CN 207953180U), and this patent technique realizes the effect of multiple buffering through setting up first elasticity collision proof body, second elasticity collision proof body and first reset spring, progressively reduces the injury that the striking brought, nevertheless, cushions through setting up reset spring, when nut translation rate is very fast, with reset spring extrusion deformation easily, surpass the compression limit of spring, need frequent change spring.

Accordingly, those skilled in the art have provided a rail impact preventing structure for a machining center to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guide rail anticollision structure for machining center to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

A guide rail anti-collision structure for a machining center comprises a guide rail body and a screw rod transmission mechanism, wherein a groove is formed in the center of the upper end face of the guide rail body, the screw rod transmission mechanism is fixedly installed in the groove, a nut is connected to the screw rod transmission mechanism in a threaded mode, a sliding block is fixedly connected to the upper end face of the nut, the screw rod transmission mechanism drives the sliding block to move back and forth through the nut, and anti-collision pieces are arranged at two ends of the inner wall of the groove; the anti-collision piece comprises a first anti-collision mechanism, a second anti-collision mechanism and a third anti-collision mechanism, the first anti-collision mechanism, the second anti-collision mechanism and the third anti-collision mechanism are all arranged in sequence along the moving direction of the nut, the first anti-collision mechanism comprises a first anti-collision roller, a first fixed cylinder and a plurality of springs, the springs are evenly distributed at equal intervals on the outer wall of the first anti-collision roller, the first anti-collision roller passes through the springs and the first fixed cylinder are in elastic connection, and a first rubber layer is fixedly bonded on the outer portion of the first fixed cylinder.

As a further aspect of the present invention: the second anti-collision mechanism comprises a second anti-collision roller, a second fixing cylinder and elastic pieces, the second fixing cylinder is sleeved outside the second anti-collision roller, a plurality of elastic pieces are fixedly mounted inside the second fixing cylinder, the other side of each elastic piece is in contact with the outer wall of the second anti-collision roller, and a second rubber pad is fixedly bonded to the outer wall of the second fixing cylinder.

As a further aspect of the present invention: the third anti-collision mechanism comprises a third anti-collision roller and a wear-resistant layer, and the wear-resistant layer is fixedly mounted outside the third anti-collision roller.

As a further aspect of the present invention: the outer walls of the second rubber pad and the first rubber layer are fixedly provided with bulges.

As a further aspect of the present invention: the sizes of the first anti-collision roller, the second anti-collision roller and the third anti-collision roller are sequentially increased.

As a further aspect of the present invention: buffer springs are fixedly mounted on the left side wall and the right side wall of the groove.

As a further aspect of the present invention: the connecting groove has been seted up at the inner wall both ends of recess, anticollision piece rotates to be connected in the connecting groove.

Compared with the prior art, the beneficial effects of the utility model are that:

In the use, both ends at the recess are equipped with anticollision piece, can move when guide rail body both ends at the nut, through first anticollision institution and nut contact, and rotate together with the nut, thereby slow down the translation rate of nut, then through second anticollision institution and third anticollision institution, the speed to the nut slows down in proper order, after moving to the buffer spring position until the nut, carry out final anticollision process with the buffer spring contact, because first anticollision roller, the size that second anticollision roller and third anticollision roller hit the roller increases in proper order, the extrusion force that the nut received at the removal in-process is bigger and bigger, thereby the frictional force grow gradually that the nut received, make the nut slow down at removal in-process speed, thereby protect buffer spring.

Drawings

Fig. 1 is a schematic structural view of a guide rail collision avoidance structure for a machining center;

Fig. 2 is a schematic structural diagram of a first anti-collision mechanism in a guide rail anti-collision structure for a machining center;

FIG. 3 is a schematic structural view of a second anti-collision mechanism in a guide rail anti-collision structure for a machining center;

Fig. 4 is a schematic structural diagram of a third anticollision mechanism in a guide rail anticollision structure for a machining center.

In the figure: 1. a guide rail body; 11. a groove; 12. connecting grooves; 2. a screw drive mechanism; 3. a nut; 4. a slider; 5. an anti-collision member; 51. a first anti-collision mechanism; 511. a first anti-collision roller; 512. a first fixed cylinder; 513. a spring; 514. a first rubber layer; 52. a second collision avoidance mechanism; 521. a second anti-collision roller; 522. a second fixed cylinder; 523. a spring plate; 524. a second rubber pad; 53. a third anti-collision mechanism; 531. a third collision prevention roller; 532. a wear layer; 54. a protrusion; 6. a buffer spring.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present invention, a guide rail anti-collision structure for a machining center includes a guide rail body 1 and a screw rod transmission mechanism 2, a groove 11 is formed in a center of an upper end surface of the guide rail body 1, the screw rod transmission mechanism 2 is fixedly installed in the groove 11, a nut 3 is connected to the nut 3 through a thread, a slider 4 is fixedly connected to an upper end surface of the nut 3, the screw rod transmission mechanism 2 drives the slider 4 to move back and forth through the nut 3, and anti-collision members 5 are arranged at two ends of an inner wall of the groove 11; the anti-collision piece 5 comprises a first anti-collision mechanism 51, a second anti-collision mechanism 52 and a third anti-collision mechanism 53, the first anti-collision mechanism 51 comprises a first anti-collision roller 511, a first fixed cylinder 512 and a plurality of springs 513, the plurality of springs 513 are uniformly distributed on the outer wall of the first anti-collision roller 511 at equal intervals, the first anti-collision roller 511 is elastically connected with the first fixed cylinder 512 through the springs 513, and a first rubber layer 514 is bonded and fixed to the outer part of the first fixed cylinder 512.

In the embodiment, in the using process, the anti-collision pieces 5 are arranged at the two ends of the groove 11, when the nut 3 moves to the two ends of the guide rail body 1, the first anti-collision mechanism 51 is contacted with the nut 3 and rotates along with the nut 3, so as to slow down the moving speed of the nut 3, then the second anti-collision mechanism 52 and the third anti-collision mechanism 53 are used for sequentially slowing down the speed of the nut 3 until the nut 3 moves to the position of the buffer spring 6 and then is contacted with the buffer spring 6 for final anti-collision operation, because the sizes of the first anti-collision roller 511, the second anti-collision roller 521 and the third anti-collision roller 531 are sequentially increased, the extrusion force applied to the nut 3 in the moving process is gradually increased, the friction force applied to the nut 3 is gradually increased, so that the speed of the nut 3 in the moving process is slowed down, the buffer spring 6 is protected, and the moving speed of the nut 3 is prevented from being too fast, the impact force on the buffer spring 6 is too large, resulting in damage to the buffer spring 6.

In fig. 1: first anticollision institution 51, second anticollision institution 52 and third anticollision institution 53 all arrange along nut 3's moving direction in proper order, the equal fixed mounting of the left and right sides wall of recess 11 has buffer spring 6, connecting groove 12 has been seted up at the inner wall both ends of recess 11, anticollision 5 rotates to be connected in connecting groove 12, first crashproof roller 511, the size that second crashproof roller 521 and third crashproof roller 531 increases in proper order, nut 3 is at the removal in-process, at first with first anticollision institution 51 contact, carry out the first speed reduction to nut 3 through first anticollision institution 51, carry out the second speed reduction to nut 3 through second anticollision institution 52 after that, and third anticollision institution 53 carries out the third speed reduction, make nut 3's speed reduction effect better.

In fig. 2: first anticollision institution 51 includes first anticollision roller 511, first fixed cylinder 512 and a plurality of spring 513, the even equidistant distribution of a plurality of spring 513 is at the outer wall of first anticollision roller 511, first anticollision roller 511 passes through spring 513 and first fixed cylinder 512 elastic connection, the outside bonding of first fixed cylinder 512 is fixed with first rubber layer 514, first anticollision institution 51 carries out first speed reduction to nut 3, in the removal process of nut 3, through first fixed cylinder 512 and nut 3 contact, under the effect of spring 513, the impact force to nut 3 cushions the shock attenuation, then nut 3 continues to move, under the effect of frictional force, nut 3 drives first fixed cylinder 512 and first anticollision roller 511 and rotates, thereby slow down nut 3, first anticollision institution 51 can provide the direction function for second anticollision institution 52 simultaneously.

In fig. 3: the second anti-collision mechanism 52 comprises a second anti-collision roller 521, a second fixed cylinder 522 and spring pieces 523, the second fixed cylinder 522 is sleeved outside the second anti-collision roller 521, a plurality of spring pieces 523 are fixedly installed inside the second fixed cylinder 522, the other side of each spring piece 523 is in contact with the outer wall of the second anti-collision roller 521, a second rubber pad 524 is fixedly bonded on the outer wall of the second fixed cylinder 522, the nut 3 moves after being in contact with the first anti-collision mechanism 51 in the moving process, moves to the second anti-collision mechanism 52 and is in contact with the second fixed cylinder 522, the second fixed cylinder 522 is extruded under the action of the spring pieces 523, the second anti-collision roller 521 is larger than the second anti-collision roller 521, so that the second anti-collision roller 521 is in closer contact with the nut 3, the extrusion force is larger, and the friction force between the second anti-collision mechanism 52 and the nut 3 is larger than the friction force between the first anti-collision mechanism 51 and the nut 3, so that the deceleration effect of the nut 3 is better.

In fig. 4: third anticollision mechanism 53 includes third anticollision roller 531 and wearing layer 532, wearing layer 532 fixed mounting is in the outside of third anticollision roller 531, the equal fixed mounting of outer wall on second rubber pad 524 and first rubber layer 514 has arch 54, nut 3 is at the removal in-process, remove after contacting with second anticollision mechanism 52, remove third anticollision mechanism 53 department, because third anticollision roller 531 is greater than second anticollision roller 521, make third anticollision roller 531 closely laminate with nut 3, carry out the third speed reduction to nut 3.

The utility model discloses a theory of operation is: during the moving process of the nut 3, the nut 3 is firstly contacted with the first anti-collision mechanism 51, the first anti-collision mechanism 51 is used for carrying out first speed reduction on the nut 3, then the second anti-collision mechanism 52 is used for carrying out second speed reduction on the nut 3, and the third anti-collision mechanism 53 is used for carrying out third speed reduction, so that the speed reduction effect of the nut 3 is better, during the moving process of the nut 3, the first fixed cylinder 512 is contacted with the nut 3, under the action of the spring 513, the impact force of the nut 3 is buffered and damped, then the nut 3 continuously moves, under the action of the friction force, the nut 3 drives the first fixed cylinder 512 and the first anti-collision roller 511 to rotate, so that the nut 3 is decelerated, meanwhile, the first anti-collision mechanism 51 can provide a guiding function for the second anti-collision mechanism 52, and because the second anti-collision roller 521 is larger than the second anti-collision roller 521, the second anti-collision roller 521, the extrusion force is larger, so that the friction force between the second anti-collision mechanism 52 and the nut 3 is larger than the friction force between the first anti-collision mechanism 51 and the nut 3, the deceleration effect of the nut 3 is better, the nut continues to move after being in contact with the second anti-collision mechanism 52 and moves to the third anti-collision mechanism 53, the third anti-collision roller 531 is larger than the second anti-collision roller 521, so that the third anti-collision roller 531 is tightly attached to the nut 3, the nut 3 is decelerated for the third time, and the nut 3 is in contact with the buffer spring 6 until the nut 3 moves to the position of the buffer spring 6 to perform final anti-collision operation.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The guide rail anti-collision structure for the machining center is characterized by comprising a guide rail body (1) and a screw rod transmission mechanism (2), wherein a groove (11) is formed in the center of the upper end face of the guide rail body (1), the screw rod transmission mechanism (2) is fixedly installed in the groove (11), a nut (3) is connected onto the screw rod transmission mechanism (2) in a threaded mode, a sliding block (4) is fixedly connected onto the upper end face of the nut (3), the screw rod transmission mechanism (2) drives the sliding block (4) to move back and forth through the nut (3), and anti-collision pieces (5) are arranged at two ends of the inner wall of the groove (11);

The anti-collision piece (5) comprises a first anti-collision mechanism (51), a second anti-collision mechanism (52) and a third anti-collision mechanism (53), wherein the first anti-collision mechanism (51), the second anti-collision mechanism (52) and the third anti-collision mechanism (53) are sequentially arranged along the moving direction of the nut (3), the first anti-collision mechanism (51) comprises a first anti-collision roller (511), a first fixed cylinder (512) and a plurality of springs (513), the springs (513) are uniformly distributed on the outer wall of the first anti-collision roller (511) at equal intervals, the first anti-collision roller (511) is elastically connected with the first fixed cylinder (512) through the springs (513), and a first rubber layer (514) is fixedly bonded to the outer part of the first fixed cylinder (512).

2. The guide rail anti-collision structure for the machining center according to claim 1, wherein the second anti-collision mechanism (52) comprises a second anti-collision roller (521), a second fixed cylinder (522) and elastic sheets (523), the second fixed cylinder (522) is sleeved outside the second anti-collision roller (521), a plurality of elastic sheets (523) are fixedly installed inside the second fixed cylinder (522), the other side of each elastic sheet (523) is in contact with the outer wall of the second anti-collision roller (521), and a second rubber pad (524) is fixedly bonded to the outer wall of the second fixed cylinder (522).

3. A guide rail collision avoidance structure for a machining center according to claim 2, wherein the third collision avoidance mechanism (53) comprises a third collision avoidance roller (531) and a wear layer (532), the wear layer (532) being fixedly mounted to an outer portion of the third collision avoidance roller (531).

4. The guide rail collision avoidance structure for a machining center according to claim 3, wherein the second rubber pad (524) and the first rubber pad (514) are fixedly provided with a protrusion (54) at the outer wall.

5. A guide rail collision avoidance structure for a machining center according to claim 3, wherein the sizes of the first collision roller (511), the second collision roller (521), and the third collision roller (531) are increased in order.

6. The guide rail collision avoidance structure for a machining center according to claim 1, wherein the buffer springs (6) are fixedly mounted on both left and right side walls of the groove (11).

7. The guide rail collision avoidance structure for a machining center according to claim 1, wherein the groove (11) has a connecting groove (12) formed at both ends of an inner wall thereof, and the collision avoidance member (5) is rotatably connected in the connecting groove (12).