CN220586103U - Intelligent electric cylinder of embedded guide rail of integrative semi-closed formula of drive control - Google Patents

Abstract

The utility model relates to an intelligent electric cylinder of a driving and controlling integrated semi-closed embedded guide rail, which comprises a driving and controlling integrated motor and a sliding table assembly; the sliding table assembly comprises a base, a sliding seat and a ball screw; two base grooves are symmetrically arranged in the base; the sliding seat is arranged in the base in a matched sliding manner, a sliding seat through hole is formed in the center of the sliding seat, a sliding seat groove opposite to the base groove is formed in the sliding seat, two steel ball reflow holes corresponding to the two sliding seat grooves are also formed in the sliding seat, and return devices are respectively arranged at two ends of the sliding seat; a steel ball is arranged between the base groove and the slide seat groove; the screw nuts of the ball screw are arranged in the through holes of the sliding seat, and the two ends of the ball screw are correspondingly connected with bearings arranged at the two ends of the base; the motor is in transmission connection with one end of the ball screw. The utility model saves space, reduces the installation error of the guide rail, improves the straightness and running parallelism of the guide rail, and has high transmission efficiency and operation efficiency.

Description

Intelligent electric cylinder of embedded guide rail of integrative semi-closed formula of drive control

Technical Field

The utility model relates to the field of sliding tables, in particular to an intelligent electric cylinder of a driving and controlling integrated semi-closed embedded guide rail.

Background

The linear module is a linear actuator driven by a servo or stepper motor. The modular linear modules become an indispensable motion execution unit in automation applications. The linear modules are commonly used as linear modules, single-axis manipulators, and the like.

In the prior art, the guide part of the linear module is generally assembled on the base by adopting a standard linear guide rail, and then is formed by combining a ball screw, a bearing seat and a servo motor, and the linear movement of the linear module sliding block is realized by controlling the motor to drive the ball screw to rotate. However, in the application, the installation error exists in both the guide rail and the screw rod, the connection between the screw rod and the base is unstable, the ball screw rod can generate axial clearance and play, and then the straightness and running parallelism of the linear guide mechanism are caused to generate errors, and the existing electric cylinder is low in integration level, more in assembly parts, larger in external dimension and large in accumulated error, so that the application of the electric cylinder in a plurality of high-precision and high-integration-level devices is limited.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an intelligent electric cylinder for driving and controlling an integrated semi-closed embedded guide rail.

The technical scheme adopted for solving the technical problems is as follows: an intelligent electric cylinder of a driving and controlling integrated semi-closed embedded guide rail comprises a driving and controlling integrated motor and a sliding table assembly; the sliding table assembly comprises a base, a sliding seat and a ball screw; the base is of a U-shaped cross section, and linear base grooves are symmetrically formed in two side walls of the U-shaped structure in the base; the sliding seat is arranged in the base in a matched sliding manner, a sliding seat through hole is formed in the center of the sliding seat along the sliding direction of the sliding seat, linear sliding seat grooves opposite to the base grooves are formed in two side surfaces of the sliding seat parallel to the sliding direction of the sliding seat, two steel ball reflow holes corresponding to the two sliding seat grooves are also formed in the sliding seat, and a reverser which is communicated with the steel ball reflow holes and the sliding seat grooves is respectively arranged at two ends of the sliding seat; steel balls rolling in the base groove and the slide seat groove are arranged between the base groove and the slide seat groove; the screw nuts of the ball screw are arranged in the sliding seat through holes, and two ends of the ball screw correspondingly extend out from two ends of the sliding seat through holes and are connected with bearings arranged at two ends of the base; the motor is in transmission connection with one end of the ball screw.

Preferably, two base clamping grooves with square cross sections are symmetrically formed in two side walls of the U-shaped structure in the base, base guide rails are embedded in the base clamping grooves, and the two base grooves are correspondingly formed in the opposite surfaces of the two base guide rails.

Preferably, the ball screw has a flange-less screw nut.

Preferably, two side surfaces of the sliding seat are provided with sliding seat clamping grooves at positions opposite to the base grooves, sliding seat guide rails are embedded in the sliding seat clamping grooves, and the sliding seat grooves are arranged on surfaces of the sliding seat guide rails opposite to the base grooves.

Preferably, a return pipeline is arranged in the steel ball return hole.

Preferably, the bearings are arranged at two ends of the base through bearing supports, one of the bearings is a precise angular contact ball bearing, the other is a deep groove ball bearing, and the motor is arranged at one side of the precise angular contact ball bearing.

Preferably, the motor is in transmission connection with the ball screw through a coupler arranged on the base, a pin hole communicated with the through hole of the slide seat is formed in the top of the slide seat, a pin positioning hole opposite to the pin hole is formed in a screw nut of the ball screw, a threaded hole is further formed in the position, adjacent to the pin hole, of the top of the slide seat, a pin penetrates through the pin hole and then is inserted into the pin positioning hole, and a stop screw abutting against the top of the pin is arranged in the threaded hole.

Preferably, the side wall of the sliding seat is provided with an oil filling hole communicated with the through hole of the sliding seat, and the screw rod of the ball screw is sleeved with an oil storage ring which corresponds to the oil filling hole and moves synchronously with a screw nut of the ball screw.

Preferably, a protective cover above the sliding seat is further arranged on the base.

Preferably, the motor has an absolute encoder built therein.

The utility model has the beneficial effects that: the utility model adopts the driving and controlling integrated motor, so that the running efficiency is improved, the embedded guide rail structure reduces the installation error, reduces the volume of the linear guide mechanism, and improves the straightness and running parallelism of the linear guide mechanism; the ball screw nut is directly arranged in the sliding seat, so that the installation error of the ball screw nut is reduced, the axial clearance and the play of the ball screw are eliminated, the transmission efficiency and the operation efficiency are improved, the volume is greatly reduced, and the installation space is more saved under the condition of the same load capacity.

Drawings

FIG. 1 is a schematic exploded view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present utility model in the middle of the lead screw nut along the radial direction of the lead screw nut;

FIG. 4 is a schematic cross-sectional view of an embodiment of the present utility model along a lead screw;

FIG. 5 is a schematic view of a sliding seat according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the structure of a lead screw nut according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the structure of a base and base rail according to an embodiment of the present utility model;

FIG. 8 is an enlarged schematic view of the structure of FIG. 7A according to the embodiment of the present utility model;

FIG. 9 is a schematic view of a carriage rail according to an embodiment of the present utility model;

part names and serial numbers in the figure: 1-a motor 2-a base 20-a base groove 21-a base clamping groove 22-a base guide rail 23-a protective cover 3-a sliding seat 30-a sliding seat through hole 31-a sliding seat groove 32-a steel ball return hole 33-a sliding seat clamping groove 34-a sliding seat guide rail 35-a return pipe 36-a pin hole 37-a threaded hole 38-an oil filling hole 4-a ball screw 40-a screw nut 41-a screw 42-a pin 43-a stop screw 400-a pin positioning hole 5-a reverser 6-a steel ball 7-a rear end bearing 70-a rear end bearing support 71-a front end bearing 72-a front end bearing support 8-a coupling 9-an oil storage ring.

Detailed Description

For the purpose of illustrating more clearly the objects, technical solutions and advantages of embodiments of the present utility model, the present utility model will be further described with reference to the accompanying drawings and embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model. Furthermore, directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., in the present utility model are used only with reference to the directions of the attached drawings, and are used for better and more clear description and understanding of the present utility model, not to indicate or imply the orientations that the present utility model must have, and thus should not be construed as limiting the present utility model.

The embodiment of the utility model is shown in fig. 1 to 9, and the intelligent electric cylinder with the embedded guide rail is integrated with a driving and controlling function, and comprises a driving and controlling integrated motor 1 and a sliding table component, wherein the driving and controlling integrated motor comprises a shell, a motor body arranged in the shell and a driving and controlling circuit board for controlling the motor; the sliding table assembly comprises a base 2, a sliding seat 3 and a ball screw 4; the base 2 is a base with a U-shaped cross section and is made of extruded aluminum profiles, the sliding seat 3 and the ball screw 4 are arranged in the U-shaped structure of the base 2 to form a semi-closed linear guide mechanism, the two side walls of the U-shaped structure in the base 2 are symmetrically provided with linear base grooves 20, namely, the inner surfaces of the two side walls of the base 2 are respectively provided with one base groove 20, the base grooves 20 on the two sides are arranged at the same height in the base 2, the base grooves 20 can be integrally formed with the base 2, the straightness and running parallelism of the linear guide mechanism are improved, in order to keep the stability of the base 2 and the base grooves 20, two base clamping grooves 21 with square cross sections are symmetrically arranged on the two side walls of the U-shaped structure in the base 2, the base clamping grooves 21 are embedded with base guide rails 22 correspondingly arranged on the opposite surfaces of the two base guide rails 22, namely, one base clamping groove 21 is embedded with one base guide rail 22 in a matching way, the square structure of the cross sections of the base clamping grooves 21 avoids the base guide rails 22 from being embedded into the base clamping grooves 21, and the straightness and running parallelism of the base 2 is improved, and the error of the linear guide mechanism is reduced, and the running error of the linear guide mechanism is further improved; the slide seat 3 is matched and glidingly arranged in the base 2, namely the slide seat 3 slides in the U-shaped structure of the base 2, the center of the slide seat 3 is provided with a slide seat through hole 30 along the sliding direction of the slide seat 3, when the base 2 is arranged in the front-back direction, the axial line direction of the slide seat through hole 30 is also in the front-back direction, at the moment, the screw nut 40 of the ball screw 4 is arranged in the slide seat through hole 30, the screw nut 40 of the ball screw 4 and the slide seat 3 are integrated, the installation error of the screw nut 40 of the ball screw 4 is reduced, the screw nut 40 of the ball screw 4 is selected to be a flangeless screw nut, namely a flangeless cylinder structure, then the screw nut 40 of the ball screw 4 is arranged in the slide seat 3, the installation space is greatly saved, at the moment, the two ends of the screw 41 of the ball screw 4 correspondingly extend out from the two ends of the slide seat through hole 30 and are connected with bearings arranged at the two ends of the base 2, namely, two ends of the base 2 are respectively provided with a bearing, after the screw 41 of the ball screw 4 passes through the sliding seat through hole 30, the two ends of the screw 41 are correspondingly arranged on the two bearings at the two ends of the base 2, the bearings are arranged at the two ends of the base 2 through bearing supports, one bearing is a precise angular contact ball bearing, the other bearing is a deep groove ball bearing, namely, the front end and the rear end of the base 2 are correspondingly provided with a front end bearing support 72 and a rear end bearing support 70, the front end bearing support 72 is provided with paired precise angular contact ball bearings, namely, the front end bearing 71 can bear larger axial force and radial force, the axial play and the gap can be avoided, the rear end bearing 7 arranged on the rear end bearing support 70 is a deep groove ball bearing, mainly bears radial force, and a shaft end swinging motor for eliminating the rotation of the ball screw 4 is arranged at one side of the precise angular contact ball bearing, the motor is arranged at the front end shaft end of the ball screw 4, so that the axial gap and the play of the ball screw 4 are eliminated, the volume is greatly reduced, and the installation space is more saved under the same load capacity. The motor 1 is in transmission connection with one end of the ball screw 4, the motor 1 is in transmission connection with the ball screw 4 through a coupler 8 arranged on the base 2, the coupler 8 comprises a coupler body and a shell for installing the coupler body, the shell is arranged at the front end of the base 1 and enables a front end bearing support 72 to be positioned at the rear side in the shell, the motor body is connected with the coupler body, the shell is connected with the shell, so that the ball screw 4, a front end bearing 71, a rear end bearing 7, a front end bearing support 72, a rear end bearing support 70, the coupler 8 and a driving and controlling integrated motor 1 are all arranged on the base 2, a linear electric cylinder for precise transmission and positioning is formed, the overall size of the module is greatly reduced, the overall length of the module is shortened, an external servo driver and a sensor are not required to be installed, a drag chain cable is reduced, wiring is simplified, and meanwhile, the straightness and running parallelism of a linear guide rail are improved; the slide 3 is provided with linear slide grooves 31 opposite to the base grooves 20 on both side surfaces parallel to the sliding direction, that is, the slide grooves 31 are arranged on the side surfaces of the slide 3 opposite to the base grooves 20 and at the same height as the base grooves 20, and the steel balls 6 can be mounted in a matched manner in the space formed by the base grooves 20. Also, in order to maintain the stability of the structures of the slider 3 and the slider groove 31, both side surfaces of the slider 3 are provided with slider grooves 33 at positions opposite to the base groove 20, the slider grooves 33 are embedded with slider rails 34, and the slider groove 31 is provided on a surface of the slider rails 34 opposite to the base groove 20. Two steel ball reflow holes 32 corresponding to the two slide grooves 31 are also arranged in the slide 3, namely, one steel ball reflow hole 32 is arranged in the slide 3 corresponding to one slide groove 31, the two steel ball reflow holes 32 are arranged below the slide through hole 30 and form a delta-shaped structure with the slide through hole 30, and two ends of the slide 3 are respectively provided with a reverser 5 which is communicated with the steel ball reflow hole 32 and the slide groove 31; a steel ball 6 rolling in the base groove 20 and the slide groove 31 is arranged between the base groove 20 and the slide groove 31; when the sliding seat 3 and the base 2 relatively move, the steel balls 6 form circular rolling through the base groove 20, the sliding seat groove 31, the reverser 5 and the steel ball backflow hole 32, so that the sliding seat 3 and the base 2 relatively move, and the precise, stable and smooth linear movement sliding table of the embedded guide rail is realized, and the ball screw can achieve higher transmission efficiency. At this time, a return pipe 35 is installed in the steel ball return hole 32, so that the steel ball 6 rolls in the return pipe 35, the steel ball 6 is prevented from directly contacting the slide seat 2, and the stability of the structure is maintained.

For the installation of the screw nut 40 of the ball screw 4 on the slide 3, a pin hole 36 communicated with the slide through hole 30 is arranged at the top of the slide 3, a pin positioning hole 400 opposite to the pin hole 36 is arranged on the screw nut 40 of the ball screw 4, a threaded hole 37 is further arranged at the top of the slide 3 and adjacent to the pin hole 36, a pin 42 is inserted into the pin positioning hole 400 after passing through the pin hole 36, a stop screw 43 abutting against the top of the pin 42 is arranged in the threaded hole 37, the pin 42 passes through the pin hole 36 of the slide 3 and enters the pin positioning hole 400 of the screw nut 40, and then the pin is locked into the threaded hole 37 of the slide 3 through the stop screw 43, so that the precise positioning and fixing of the screw nut 40 are realized.

As shown in fig. 1, 2, 4 and 5, an oil filling hole 38 communicated with the slide through hole 30 is formed in the side wall of the slide 3, an oil storage ring 9 corresponding to the oil filling hole 38 and moving synchronously with a screw nut 40 of the ball screw 4 is sleeved on the screw of the ball screw 4, the oil filling hole 38 penetrates through the wall of the slide through hole 30, grease is conveyed to the oil storage ring 9 through the oil filling hole 38 arranged outside, the oil storage ring 9 is made of a fiber material with an oil absorption function, is sleeved on the screw 41 of the ball screw 4 and is arranged close to the rear end of the screw nut 40, meanwhile, the oil storage ring 9 is also arranged in the slide through hole 30, then an annular baffle plate is arranged at the port of the slide through hole 30 to limit the oil storage ring 9 in the slide through hole 30, the oil storage ring 9 slides on the screw 41 of the ball screw 4 along with the sliding of the screw nut 40 and the slide 3, and the oil filling linear module has a long-time lubrication-free function through the external and internal oil storage device, and the service life of the linear module is prolonged.

As shown in fig. 1 to 4, a protective cover 23 is further arranged on the base 2 and above the sliding seat 3 to prevent foreign matters from touching the transmission part during high-speed operation, the protective cover 23 is arranged into an n-shaped cross section protective cover, top sliding grooves are concaved downwards in parallel at intervals at the top of the sliding seat 3, and two walls of the n-shaped structure of the protective cover 23 correspondingly hang in the two top sliding grooves and cannot influence the sliding of the sliding seat 3.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. An intelligent electric cylinder of embedded guide rail of integrative semi-closed type of drive control, its characterized in that: comprises a driving and controlling integrated motor and a sliding table component; the sliding table assembly comprises a base, a sliding seat and a ball screw; the base is of a U-shaped cross section, and linear base grooves are symmetrically formed in two side walls of the U-shaped structure in the base; the sliding seat is arranged in the base in a matched sliding manner, a sliding seat through hole is formed in the center of the sliding seat along the sliding direction of the sliding seat, linear sliding seat grooves opposite to the base grooves are formed in two side surfaces of the sliding seat parallel to the sliding direction of the sliding seat, two steel ball reflow holes corresponding to the two sliding seat grooves are also formed in the sliding seat, and a reverser which is communicated with the steel ball reflow holes and the sliding seat grooves is respectively arranged at two ends of the sliding seat; steel balls rolling in the base groove and the slide seat groove are arranged between the base groove and the slide seat groove; the screw nuts of the ball screw are arranged in the sliding seat through holes, and two ends of the ball screw correspondingly extend out from two ends of the sliding seat through holes and are connected with bearings arranged at two ends of the base; the motor is in transmission connection with one end of the ball screw.

2. The intelligent electric cylinder with the embedded guide rail being integrally driven and controlled according to claim 1, wherein two base clamping grooves with square cross sections are symmetrically formed in two side walls of the U-shaped structure in the base, the base guide rail is embedded in the base clamping grooves, and the two base grooves are correspondingly formed in the opposite surfaces of the two base guide rails.

3. The intelligent electric cylinder of the driving and controlling integrated semi-closed type embedded guide rail according to claim 1, wherein the screw nut of the ball screw is a flangeless screw nut.

4. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein two side surfaces of the sliding seat are provided with sliding seat clamping grooves at positions opposite to the base grooves, the sliding seat clamping grooves are embedded with sliding seat guide rails, and the sliding seat grooves are arranged on surfaces of the sliding seat guide rails opposite to the base grooves.

5. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein a return pipeline is arranged in the steel ball return hole.

6. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein the bearings are arranged at two ends of the base through bearing supports, one bearing is a precise angular contact ball bearing, the other bearing is a deep groove ball bearing, and the motor is arranged at one side of the precise angular contact ball bearing.

7. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein the motor is in transmission connection with the ball screw through a coupler arranged on the base, a pin hole communicated with the through hole of the sliding seat is formed in the top of the sliding seat, a pin positioning hole opposite to the pin hole is formed in a screw nut of the ball screw, a threaded hole is formed in the top of the sliding seat adjacent to the pin hole, a pin is inserted into the pin positioning hole after passing through the pin hole, and a stop screw abutting against the top of the pin is arranged in the threaded hole.

8. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein the side wall of the sliding seat is provided with an oil filling hole communicated with the through hole of the sliding seat, and an oil storage ring which corresponds to the oil filling hole and moves synchronously with a screw nut of the ball screw is sleeved on the screw of the ball screw.

9. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein a protective cover above the sliding seat is further arranged on the base.

10. The intelligent electric cylinder of the driving and controlling integrated semi-closed embedded guide rail according to claim 1, wherein an absolute encoder is arranged in the motor.