CN217234133U

CN217234133U - Roller guide rail pair

Info

Publication number: CN217234133U
Application number: CN202123424892.2U
Authority: CN
Inventors: 舒雄辉; 韩军君; 戴林波; 谷葩; 刘特; 陆秉贤; 吴朝华; 郭海川; 谢学兴; 刘玉新
Original assignee: Ningbo Hilectro Precision Machinery Manufacturing Co ltd
Current assignee: Ningbo Hilectro Precision Machinery Manufacturing Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-19
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a roller guide rail pair, it includes linear guide, the slider, roller and return mechanism, the slider passes through the roller and moves on linear guide, return mechanism comprises two returning devices that the structure is the same, two returning devices are symmetrically installed on the both ends of the slider along the direction of motion that it moved on linear guide, returning device has a returning circular arc passageway that supplies the roller to circulate smoothly, the width of returning circular arc passageway is greater than the axial length of roller, the degree of depth of returning circular arc passageway is greater than the diameter of roller, two passways of returning circular arc passageway are towards the slider, the roller is transversely arranged in returning circular arc passageway with the mode that its axial end is towards the passageway lateral wall of returning circular arc passageway, the roller circulates and reciprocates between linear guide and slider through two returning circular arc passageways; the roller guide rail pair has the advantages that the abrasion of the roller can be reduced by the return mechanism, so that the running precision of the roller guide rail pair can be improved, and the service life of the roller guide rail pair can be prolonged.

Description

Roller guide rail pair

Technical Field

The utility model relates to a rolling guide is vice, especially relates to a roller guide is vice.

Background

Nowadays, with the rapid development of industrial industry, many mechatronics devices are developed towards high precision, high speed, high efficiency, energy saving and the like. Under the environment, the application of the guide rail pair is common, the guide rail pair can be divided into a sliding guide rail pair, a rolling guide rail pair, a fluid medium friction guide rail pair, an elastic friction guide rail pair and the like according to the friction property of a contact surface of the guide rail pair, wherein the rolling guide rail pair is widely applied and becomes an irreplaceable key matching member of the mechanical and electrical integration equipment.

The rolling guide rail pair can be classified into a ball guide rail pair using balls as rolling elements and a roller guide rail pair using rollers as rolling elements according to the type of the rolling elements. Because the ball and the raceway of the ball guide rail pair are in point contact, and the roller and the raceway of the roller guide rail pair are in line contact, the bearing capacity of the roller is higher than that of balls of the roller guide rail pair with the same specification, so that the rollers are widely applied to various heavy electromechanical integrated equipment, particularly large-scale numerical control machines and large-scale injection molding machines.

At present, a roller guide rail pair generally comprises a guide rail, a slide block, a roller, a return mechanism and the like, wherein the roller is circularly reciprocated between the guide rail and the slide block through the return mechanism. The design of the return mechanism is related to the smooth return operation degree of the roller guide rail pair, and is indirectly related to the operation precision, the operation speed, the noise and the service life of the roller guide rail pair, and particularly under the high-bearing use condition of the roller guide rail pair, the smooth return operation degree is more critical. Although the existing return mechanisms can ensure smooth return operation to a certain extent, some return mechanisms are restricted by the structures of the return mechanisms, so that the abrasion of the roller is large, and the operation precision and the service life of the roller guide rail pair are further influenced; some are complex in structure and high in cost.

Disclosure of Invention

The utility model aims to solve the technical problem that a roller guide rail is vice is provided, its mechanism that returns can reduce the wearing and tearing of roller to can improve the vice operating accuracy of roller guide rail and prolong the vice life of roller guide rail.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a roller guide rail pair comprises a linear guide rail, a slide block, a roller and a return mechanism, wherein the slide block moves on the linear guide rail through the roller, and the roller guide rail pair is characterized in that: the reversing mechanism is composed of two reversing devices with the same structure, the two reversing devices are symmetrically arranged at two ends of the sliding block along the moving direction of the sliding block moving on the linear guide rail, each reversing device is provided with a reversing arc channel for the roller to smoothly and circularly return, the width of the reversing arc channel is larger than the axial length of the roller, the depth of the reversing arc channel is larger than the diameter of the roller, two channel ports of the reversing arc channel face the sliding block, the roller is transversely arranged in the reversing arc channel in a mode that the axial end of the roller faces the side wall of the reversing arc channel, and the roller circularly reciprocates between the linear guide rail and the sliding block through the two reversing arc channels.

The reversing device comprises a reversing device body and a reversing stop block, wherein the reversing device body is outwards provided with a semicircular cavity from the inner side end of the reversing device body, a plane cavity opening of the semicircular cavity is positioned on the inner side end of the reversing device body, the reversing stop block is semicircular, the radius of the semicircular cavity is larger than that of the reversing stop block, the reversing stop block is additionally arranged in the semicircular cavity and enables the plane end of the reversing stop block to be flush with the plane cavity opening of the semicircular cavity, the circle center of the circle where the reversing stop block is positioned coincides with the circle center of the circle where the semicircular cavity is positioned, and a space between the arc surface of the reversing stop block and the arc cavity bottom of the semicircular cavity is a reversing arc channel. The reversing device is simple in structure, only a semicircular cavity needs to be formed in the reversing device body, the reversing stop block is designed to be semicircular, the reversing stop block is installed in the semicircular cavity in the same direction as the semicircular cavity and then forms a reversing arc channel with two channel openings, and the cost of the roller guide rail pair is greatly reduced due to the simple structure.

The two cavity walls of the semicircular cavity are symmetrically provided with semicircular positioning notches matched with the return stop blocks, and the return stop blocks extend into the semicircular positioning notches from the plane cavity openings of the semicircular cavity to enable the two sides of the return stop blocks to be correspondingly embedded into the two semicircular positioning notches, so that the return stop blocks are additionally arranged in the semicircular cavity. Utilize two semi-circular location notches to fix a position the dog that turns back for turn back dog simple to operate, turn back the dog and pass through semi-circular location notch and fixed, can remain stable when high-speed operation.

The oil holes for guiding lubricating oil into the returning arc channel are processed on the returning device body, an oil mouth on the outer side of the oil hole on one of the returning device bodies is connected with an oil nozzle, and a screw plug is arranged on an oil mouth on the outer side of the oil hole on the other returning device body. For processing convenience, return to the ware body and process in batches, two are returned the structure of ware body the same promptly, and consequently one returns to the ware body and passes through glib talker and the leading-in lubricating oil of oilhole to ensure the vice normal work of this roller guide rail, if need not to use the oilhole then directly block up firmly with the screw end cap on another returns the ware body, if actual conditions is high to the lubrication requirement also can set up glib talker (install two glib talkers on the slider).

A first lubricating oil storage channel is formed in the bottom of the arc cavity of the semicircular concave cavity, the position of the oil hole corresponds to that of the first lubricating oil storage channel, and a second lubricating oil storage channel is formed in the arc surface of the return stop block. The roller guide rail pair generally provides lubricating oil at regular time when working, and the first lubricating oil storage channel and the second lubricating oil storage channel can be used for storing lubricating oil in advance, so that the lubricating performance can be further improved, the rollers are fully lubricated in the circulating process, the noise generated when the roller guide rail pair operates is reduced, the operating stability of the roller guide rail pair is ensured, and the service life of the roller guide rail pair is prolonged; the first lubricant storage channel and the second lubricant storage channel are particularly suitable for storing lubricant grease in a semisolid state; the specific positions and the number of the first lubricating oil storage channel and the second lubricating oil storage channel are not limited.

The top of the slide block is provided with a roller upper working channel along the moving direction of the slide block on the linear guide rail, the bottom of the slide block is provided with a roller lower working channel corresponding to the position of the roller upper working channel, the roller upper working channel is communicated with the roller lower working channel through two return arc channels to form a runway-shaped roller circulating reciprocating channel, the rollers are horizontally arranged in the roller circulating reciprocating channel in a circle manner, the circumferences of two adjacent rollers are in line contact, the upper surface of the linear guide rail is used as a guide rail bearing raceway, the slide block and the two return devices are arranged right above the guide rail bearing raceway, and the circumference of the roller in the roller lower working channel is in line contact with the guide rail bearing raceway, the roller reciprocates in the roller circulating reciprocating channel to drive the slide block to move on the linear guide rail. The upper working channel and the lower working channel of the roller, which are arranged on the sliding block, can be communicated with the two circular arc channels to form a roller circulating reciprocating channel, and the roller can drive the sliding block to move on the linear guide rail by reciprocating in the roller circulating reciprocating channel, so that the whole structure is simple, and the roller guide rail pair can meet the use condition of high bearing.

Compared with the prior art, the utility model has the advantages of:

1) the reversing mechanism consists of two reversing devices with the same structure, so that the reversing devices can be processed in batch, and the production cost of the reversing mechanism is reduced.

2) Because the width of the return arc channel is greater than the axial length of the roller, the depth of the return arc channel is greater than the diameter of the roller, namely, after the roller is transversely arranged in the return arc channel, a certain gap can be always kept between the roller and the return arc channel, the roller positioned in the return arc channel is not subjected to bearing capacity, and continuous lubricating oil can be provided for the return arc channel inside through the oil hole arranged outside, through the rotating and rolling of the roller, the lubricating oil can be uniformly attached to the circumferential surface of the roller to form a layer of protective oil film, so that the abrasion of the roller can be effectively avoided, the noise can be reduced (the direct metal impact between the roller and the roller is avoided, the oil film plays a buffer role), the smooth and low-noise circulation return of the roller in the return arc channel is realized, and the operation precision and the service life of the roller guide rail pair are improved.

Drawings

FIG. 1 is an exploded view of a roller guide pair according to the present invention;

fig. 2 is a schematic structural view of a reverser body of the reverser in the roller guide pair of the present invention;

fig. 3 is a schematic structural view of a return stop of the return device in the roller guide pair of the present invention;

fig. 4 is a schematic view of an assembly structure of the return device, the slider and the roller in the roller guide pair of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The roller guide rail pair provided by the utility model comprises a linear guide rail 1 and a slide block 2, the roller 3 and the return mechanism, the slide block 2 moves on the linear guide rail 1 through the roller 3, the return mechanism is composed of two return devices 41 with the same structure, the two return devices 41 are symmetrically installed on two ends of the slide block 2 along the moving direction of the slide block 2 on the linear guide rail 1, the return device 41 is provided with a return arc channel 411 for the roller 3 to smoothly and smoothly return, the width of the return arc channel 411 is larger than the axial length of the roller 3, the depth of the return arc channel 411 is larger than the diameter of the roller 3, two channel openings of the return arc channel 411 face the slide block 2, the roller 3 is transversely arranged in the return arc channel 411 in a mode that the axial end of the roller 3 faces the channel side wall of the return arc channel 411, and the roller 3 circularly reciprocates between the linear guide rail 1 and the slide block 2 through the two return arc channels 411.

In this embodiment, the returning device 41 includes a returning device body 412 and a returning stop 413, the returning device body 412 is provided with a semicircular cavity 414 outward from an inner end thereof, a planar cavity 415 of the semicircular cavity 414 is located on the inner end of the returning device body 412, the returning stop 413 is semicircular, a radius of the semicircular cavity 414 is greater than a radius of the returning stop 413, the returning stop 413 is installed in the semicircular cavity 414, a planar end 416 of the returning stop 413 is flush with the planar cavity 415 of the semicircular cavity 414, a circle center of a circle of the returning stop 413 coincides with a circle center of a circle of the semicircular cavity 414, and a space between an arc surface 417 of the returning stop 413 and an arc cavity bottom 418 of the semicircular cavity 414 is a returning arc channel 411. The structure of the return device 41 is simple, only a semicircular cavity 414 is formed on the return device body 412, and the return stop 413 is designed to be semicircular, so that the return stop 413 is installed in the semicircular cavity 414 in the same direction as the semicircular cavity 414 to form a return arc channel 411 with two channel openings, and the structure is simple, and the cost of the roller guide rail pair is greatly reduced.

In this embodiment, the two cavity walls of the semicircular cavity 414 are symmetrically provided with semicircular positioning notches 419 adapted to the returning stopper 413, and the returning stopper 413 extends from the planar cavity opening 415 of the semicircular cavity 414 to enable two sides of the returning stopper 413 to be correspondingly embedded into the two semicircular positioning notches 419, so that the returning stopper 413 is installed in the semicircular cavity 414. Utilize two semi-circular location notches 419 to fix a position reverse dog 413 for reverse dog 413 simple to operate, reverse dog 413 is fixed through semi-circular location notch 419, can remain stable when high-speed operation.

In this embodiment, the return body 412 is provided with oil holes 42 for introducing lubricating oil into the return arc passage 411, one of the return body 412 is provided with an oil nipple 43 connected to an outer port of the oil hole 42, and the other return body 412 is provided with a screw plug 44 on an outer port of the oil hole 42. For the convenience of processing, the reverser bodies 412 are processed in batch, that is, the two reverser bodies 412 have the same structure, so that lubricating oil is introduced into one reverser body 412 through the oil nipple 43 and the oil hole 42 to ensure the normal operation of the roller guide rail pair, and the other reverser body 412 is directly and firmly blocked by the screw plug 44 without using the oil hole 42, and the oil nipple (two oil nipples are installed on one sliding block) can be set if the lubricating requirement of the actual working condition is high.

In this embodiment, the arc cavity bottom 418 of the semicircular concave cavity 414 is opened with a first lubricant storage channel 45, the position of the oil hole 42 corresponds to the position of the first lubricant storage channel 45, and the arc surface 417 of the return stopper 413 is opened with a second lubricant storage channel 46. The roller guide rail pair generally provides lubricating oil at regular time when working, and the first lubricating oil storage channel 45 and the second lubricating oil storage channel 46 can be used for storing lubricating oil in advance, so that the lubricating performance can be further improved, the rollers 3 can be fully lubricated in the circulation process, the noise generated when the roller guide rail pair operates is reduced, the operation stability of the roller guide rail pair is ensured, and the service life of the roller guide rail pair is prolonged; the first lubricant storage channel 45 and the second lubricant storage channel 46 are particularly suitable for storing a lubricant grease in a semi-solid state; the specific positions and the number of the first lubricant storage passage 45 and the second lubricant storage passage 46 are not limited.

In this embodiment, the top of the slider 2 is provided with a roller upper working channel 21 along the moving direction of the slider 2 on the linear guide 1, the bottom of the slider 2 is provided with a roller lower working channel 22 corresponding to the position of the roller upper working channel 21, the roller upper working channel 21 is communicated with the roller lower working channel 22 through two return arc channels 411 to form a runway-shaped roller circulating reciprocating channel (not shown in the figure), the rollers 3 are horizontally arranged in the roller circulating reciprocating channel in a circle, the circumferences of two adjacent rollers 3 are in line contact, the upper surface of the linear guide 1 is used as a guide rail bearing raceway 11, the slider 2 and two return devices 41 are arranged right above the guide rail bearing raceway 11, the circumference of the rollers 3 in the roller lower working channel 22 is in line contact with the guide rail bearing raceway 11, and the rollers 3 reciprocate in the roller circulating reciprocating channel to drive the slider 2 to move on the linear guide 1. The upper roller working channel 21 and the lower roller working channel 22 which are arranged on the sliding block 2 can be communicated with the two return arc channels 411 to form a roller circulating reciprocating channel, and the sliding block 2 can be driven to move on the linear guide rail 1 by the reciprocating operation of the rollers 3 in the roller circulating reciprocating channel, so that the whole structure is simple, and the roller guide rail pair can meet the use condition of high bearing.

During specific processing, on the premise of ensuring that the sliding block 2 moves on the guide rail bearing raceway 11 of the linear guide rail 1 through the roller 3, the matching relationship between the linear guide rail 1 and the sliding block 2 can adopt the prior art, and in fig. 1, the sliding block 2 is sleeved on the linear guide rail 1; according to actual needs, a roller retaining mechanism can be additionally arranged to ensure that the roller 3 always runs in a reciprocating way in the roller circulating reciprocating channel and cannot run out; according to actual needs, a sealing mechanism can be added to prevent dust and the like from entering the inside of the roller guide rail pair.

Claims

1. A roller guide rail pair comprises a linear guide rail, a slide block, a roller and a return mechanism, wherein the slide block moves on the linear guide rail through the roller, and the roller guide rail pair is characterized in that: the reversing mechanism is composed of two reversing devices with the same structure, the two reversing devices are symmetrically arranged at two ends of the sliding block along the moving direction of the sliding block moving on the linear guide rail, each reversing device is provided with a reversing arc channel for the roller to smoothly and circularly return, the width of the reversing arc channel is larger than the axial length of the roller, the depth of the reversing arc channel is larger than the diameter of the roller, two channel ports of the reversing arc channel face the sliding block, the roller is transversely arranged in the reversing arc channel in a mode that the axial end of the roller faces the side wall of the reversing arc channel, and the roller circularly reciprocates between the linear guide rail and the sliding block through the two reversing arc channels.

2. A roller guide pair according to claim 1, wherein: the reversing device comprises a reversing device body and a reversing stop block, wherein the reversing device body is outwards provided with a semicircular cavity from the inner side end of the reversing device body, a plane cavity opening of the semicircular cavity is positioned on the inner side end of the reversing device body, the reversing stop block is semicircular, the radius of the semicircular cavity is larger than that of the reversing stop block, the reversing stop block is additionally arranged in the semicircular cavity and enables the plane end of the reversing stop block to be flush with the plane cavity opening of the semicircular cavity, the circle center of the circle where the reversing stop block is positioned coincides with the circle center of the circle where the semicircular cavity is positioned, and a space between the arc surface of the reversing stop block and the arc cavity bottom of the semicircular cavity is a reversing arc channel.

3. A roller guide pair according to claim 2, wherein: the two cavity walls of the semicircular cavity are symmetrically provided with semicircular positioning notches matched with the return stop blocks, and the return stop blocks extend into the semicircular positioning notches from the plane cavity openings of the semicircular cavity to enable the two sides of the return stop blocks to be correspondingly embedded into the two semicircular positioning notches, so that the return stop blocks are additionally arranged in the semicircular cavity.

4. A roller guide pair according to any one of claims 1 to 3, wherein: the oil holes for guiding lubricating oil into the returning arc channel are processed on the returning device body, an oil mouth on the outer side of the oil hole on one of the returning device bodies is connected with an oil nozzle, and a screw plug is arranged on an oil mouth on the outer side of the oil hole on the other returning device body.

5. A roller guide pair according to claim 4, wherein: a first lubricating oil storage channel is formed in the bottom of the arc cavity of the semicircular concave cavity, the position of the oil hole corresponds to that of the first lubricating oil storage channel, and a second lubricating oil storage channel is formed in the arc surface of the return stop block.

6. A roller guide pair according to claim 5, wherein: the top of the slide block is provided with a roller upper working channel along the motion direction of the slide block on the linear guide rail, the bottom of the slide block is provided with a roller lower working channel corresponding to the position of the roller upper working channel, the roller upper working channel is communicated with the roller lower working channel through two return arc channels to form a runway-shaped roller circulating reciprocating channel, the rollers are horizontally arranged in the roller circulating reciprocating channel in a circle mode, the circumferences of two adjacent rollers are in surface line contact, the upper surface of the linear guide rail is used as a guide rail bearing raceway, the slide block and the two return devices are arranged right above the guide rail bearing raceway, and the circumference of the rollers in the roller lower working channel is in line contact with the guide rail bearing raceway, the roller reciprocates in the roller circulating reciprocating channel to drive the slide block to move on the linear guide rail.