Linear sliding table with improved structure

Abstract

The utility model provides a linear sliding table with an improved structure, and belongs to the technical field of machinery. The problem that an existing sliding table is complex in structure is solved. The linear sliding table of the improved structure comprises a cross beam, a connecting plate horizontally arranged below the cross beam and a motor fixed to one side of the cross beam, the type of the motor is a servo lead screw motor, the motor comprises a horizontally-arranged lead screw, and the outer end of the lead screw extends out of the motor; the axial direction of the lead screw is parallel to the length extension direction of the cross beam, and a nut is mounted on the lead screw; a linear guide rail is horizontally fixed to the bottom of the cross beam, the linear guide rail and the cross beam are consistent in length extending direction, and a sliding block is installed on the linear guide rail. The sliding block and the nut are fixed to the middle and the side of the top wall of the connecting plate respectively. The linear sliding table with the improved structure is simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a linear slide, in particular to a linear slide with an improved structure. Background Art

[0002] Linear slides, also known as linear modules, rectangular coordinate robots, linear slides, etc., can be divided into synchronous belt linear slides, ball screw linear slides, etc. according to the driving method.

[0003] An existing ball screw linear slide, such as a movable slide disclosed in the China Patent Library (application number: 202022323336.5), includes a guide rail, a slide arranged on the guide rail, a driving assembly and a limit assembly connected to the slide; the slide can move on the guide rail; the driving assembly includes: a driving member arranged at one end of the guide rail, a ball screw connected to the driving member, and bearing members symmetrically arranged at both ends of the ball screw; the driving member is used to drive the ball screw to rotate, the ball screw is used to drive the slide to move, and the bearing member is used to support the ball screw; the limit assembly includes: a light barrier arranged on the slide and a photoelectric switch arranged on the guide rail; the photoelectric switch is electrically connected to the driving member, and the limit assembly is used to sense and limit the position of the slide; the driving member includes: a coupling connected to the ball screw, a driving motor connected to the coupling, and a motor handwheel

[0004] In the above-mentioned slide, the motor is connected to the ball screw through a coupling, and both ends of the ball screw are rotatably supported by bearings. The overall components are relatively large and the structure is relatively complex. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a linear slide with a simple and improved structure.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a linear slide with an improved structure, including a crossbeam, a connecting plate horizontally arranged below the crossbeam and a motor fixed on one side of the crossbeam, characterized in that the type of the motor is a servo screw motor, which includes a horizontally arranged screw, and the outer end of the screw extends out of the motor; the axial direction of the screw is parallel to the length extension direction of the crossbeam, and a nut is installed on the screw; a linear guide is horizontally fixed to the bottom of the crossbeam, the length extension directions of the linear guide and the crossbeam are consistent, and a slider is installed on the linear guide; the slider and the nut are respectively fixed to the middle and side of the top wall of the connecting plate.

[0007] The lead screw and the motor rotor shaft are the same component, and the lead screw is supported by the inside of the motor. In this way, during actual assembly, the coupling for connecting the motor and the lead screw and the bearing for rotating and supporting the lead screw can be omitted, so as to reduce the investment in parts and make the slide structure simpler and more stable.

[0008] At the same time, the middle part of the connecting plate is slidably connected to the crossbeam by means of a linear guide rail and a slider, so that the forces on both sides of the connecting plate are relatively balanced, ensuring the sliding stability and accuracy of the connecting plate.

[0009] In the improved linear slide, a connection seat is fixed on the top wall of the connection plate, and the connection seat is arranged on one side of the linear guide rail; the nut includes a cylindrical body mounted on the lead screw and an annular flange formed at one end of the body, the annular flange is fixedly connected to the connection seat, and the connection seat is penetrated by a through hole for the lead screw to pass through. The above design can form a stable and reliable connection between the nut and the connection plate.

[0010] In the above-mentioned improved structure of the linear slide, the through hole is circular and matches the main body, the upper side of the through hole is open, and the main body is inserted into the through hole through the opening. This not only forms a more reliable connection between the nut and the connecting seat, but also improves the matching accuracy of the nut and the connecting seat, thereby improving the working stability and accuracy of the linear slide.

[0011] In the improved linear slide, a cylinder is formed on the outer end face of the lead screw, and the cylinder is coaxially arranged with the lead screw; a cylindrical self-lubricating sleeve is provided on the outer cover of the cylinder, the inner circumference of the self-lubricating sleeve and the outer circumference of the cylinder are attached together, and the self-lubricating sleeve is fixedly connected to the crossbeam through a bracket. The self-lubricating sleeve provides good support for the outer end of the lead screw, further suppresses the rotational vibration of the lead screw, and improves the running accuracy of the linear slide.

[0012] In the above-mentioned improved structure of the linear slide, the bracket includes a horizontally arranged plate body 1 and a plate body 2 vertically fixed on the lower side of the plate body, the plate body 1 is fixedly connected to the crossbeam, the cylinder is located between the plate body 2 and the lead screw, and one end of the above-mentioned self-lubricating sleeve is fixed on the plate body 2.

[0013] In the above-mentioned improved linear slide structure, an annular groove matching the self-lubricating sleeve is provided on the side of the plate body 2 close to the screw, and the end of the self-lubricating sleeve away from the screw is clamped in the annular groove, so that the self-lubricating sleeve and the plate body 2 are pre-connected to facilitate subsequent fixing operations.

[0014] In the above improved linear slide, the plate body 2 is connected to the plate body 1 through a connecting structure so that the plate body 2 can slide back and forth along the length direction of the beam, and under the action of the connecting structure, the plate body 2 can be locked in the sliding position. The plate body 2 can slide along the length direction of the beam to adjust the distance between the self-lubricating sleeve and the lead screw, which is convenient for debugging and assembly.

[0015] In the above improved linear slide, the second plate is pressed against the first plate; the connection structure includes a strip groove vertically penetrating the first plate, and the length extension direction of the strip groove and the crossbeam are parallel; the second plate is provided with a corresponding threaded hole, and a screw is provided in the strip groove, the screw rod is screwed into the threaded hole, and the screw head is pressed against the first plate. By turning the screw, the second plate can be controlled to be in a locked or unlocked state, which has the advantages of simple structure and convenient use.

[0016] In the above-mentioned improved linear slide, the self-lubricating bushing is fixedly connected to the plate body by welding.

[0017] As another scheme, in the above-mentioned improved structure of the linear slide, plate body two is pressed on plate body one; the connecting structure includes a screw rod vertically fixed on the top wall of plate body two, and plate body one is vertically penetrated with a clearance groove for the screw rod to pass through, the clearance groove is in the shape of an elongated strip, and the length extension directions of the clearance groove and the cross beam are parallel, a pressure cap is screwed on the screw rod, and the pressure cap is tightly pressed on the top wall of plate body one.

[0018] Compared with the prior art, the linear slide with the improved structure has the following advantages:

[0019] 1. The lead screw and the motor rotor shaft are the same component, and the lead screw is supported by the motor. In this way, during the actual assembly, the coupling for connecting the motor and the lead screw and the bearing for rotating and supporting the lead screw can be omitted, so as to reduce the investment in parts and make the slide structure simpler and more stable.

[0020] 2. The self-lubricating sleeve provides better support for the outer end of the screw, further suppressing the rotation vibration of the screw and improving the running accuracy of the linear slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of a linear slide with an improved structure.

[0022] Figure 2 It is a three-dimensional schematic diagram of the linear slide with improved structure in another direction.

[0023] Figure 3 It is a cross-sectional schematic diagram of a linear slide with an improved structure.

[0024] In the figure, 1, crossbeam; 2, connecting plate; 3, motor; 3a, lead screw; 3b, cylinder; 4, nut; 4a, annular flange; 5, linear guide; 6, slider; 7, connecting seat; 7a, through hole; 8, self-lubricating bushing; 9, bracket; 9a, plate body 1; 9a1, strip groove; 9b, plate body 2; 10, screw. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] Embodiment 1

[0027] like Figure 1 As shown, the linear slide of the improved structure comprises a beam 1, a connecting plate 2 horizontally arranged below the beam 1, and a motor 3 fixed to one side of the beam 1. The connecting plate 2 is in the shape of a long plate, and the connecting plate 2 and the beam 1 have the same length extension direction.

[0028] Specifically,

[0029] like Figure 1 and Figure 2 As shown, the type of motor 3 is a servo screw motor, and the servo screw motor is an existing product that can be purchased on the market. The motor 3 includes a horizontally arranged screw 3a, and the outer end of the screw 3a extends out of the motor 3; the axial direction of the screw 3a is parallel to the length extension direction of the crossbeam 1, and a nut 4 is installed on the screw 3a; a linear guide 5 is horizontally fixed to the bottom of the crossbeam 1, and the length extension direction of the linear guide 5 and the crossbeam 1 are consistent, and a slider 6 is installed on the linear guide 5; the slider 6 and the nut 4 are respectively fixed to the middle and side of the top wall of the connecting plate 2.

[0030] The lead screw 3a and the rotor shaft of the motor 3 are the same component, and the lead screw 3a is supported internally by the motor 3. Thus, during actual assembly, the coupling for connecting the motor 3 and the lead screw 3a and the bearing for rotating and supporting the lead screw 3a can be omitted, thereby reducing the investment in components and making the slide structure simpler and more stable.

[0031] At the same time, the middle part of the connecting plate 2 is slidably connected with the crossbeam 1 by means of a linear guide rail 5 and a slider 6, so that the forces on both sides of the connecting plate 2 are relatively balanced, thereby ensuring the sliding stability and accuracy of the connecting plate 2.

[0032] In this embodiment,

[0033] The connection method between the nut 4 and the connecting plate 2 is as follows: Figure 1 and Figure 3As shown, a connection seat 7 is fixed on the top wall of the connection plate 2, and the connection seat 7 is arranged on one side of the linear guide rail 5; the nut 4 includes a main body which is cylindrical and installed on the lead screw 3a and an annular flange 4a formed at one end of the main body, the annular flange 4a is fixedly connected to the connection seat 7, and the connection seat 7 is penetrated by a through hole 7a for the lead screw 3a to pass through. Preferably, the annular flange 4a is fixedly connected to the connection seat 7 by a circle of screws 10. Further explanation, the through hole 7a is circular to match the main body, the upper side of the through hole 7a is open, and the main body is inserted into the through hole 7a through the opening, which not only forms a more reliable connection between the nut 4 and the connection seat 7, but also improves the matching accuracy of the nut 4 and the connection seat 7, so as to improve the working stability and accuracy of the linear slide.

[0034] like Figure 3 As shown, a cylinder 3b is integrally formed on the outer end surface of the lead screw 3a, and the cylinder 3b is coaxially arranged with the lead screw 3a. A cylindrical self-lubricating sleeve 8 is provided on the outer surface of the cylinder 3b, and the inner circumference of the self-lubricating sleeve 8 is attached to the outer circumference of the cylinder 3b, and the self-lubricating sleeve 8 is fixedly connected to the crossbeam 1 through a bracket 9. The self-lubricating sleeve 8 provides good support for the outer end of the lead screw 3a, further suppresses the rotational vibration of the lead screw 3a, and improves the running accuracy of the linear slide.

[0035] Among them, the bracket 9 includes a horizontally arranged plate body 1 9a and a plate body 2 9b vertically fixed to the lower side of the plate body 1 9a, the plate body 1 9a is fixedly connected to the crossbeam 1, the cylinder 3b is located between the plate body 2 9b and the screw 3a, and one end of the above-mentioned self-lubricating sleeve 8 is fixed on the plate body 2 9b.

[0036] Preferably, the self-lubricating sleeve 8 is welded and fixedly connected to the plate body 9b. It is further explained that an annular groove matching the self-lubricating sleeve 8 is provided on the side of the plate body 9b close to the screw 3a, and the end of the self-lubricating sleeve 8 away from the screw 3a is clamped in the annular groove, so that the self-lubricating sleeve 8 and the plate body 9b are pre-connected to facilitate subsequent fixing operations.

[0037] Furthermore, if Figure 1 and Figure 2As shown, the plate body 2 9b is connected to the plate body 1 9a through a connecting structure so that the plate body 2 9b can slide back and forth along the length direction of the beam 1, and under the action of the connecting structure, the plate body 2 9b can be locked in the sliding position. The plate body 2 9b can slide along the length direction of the beam 1 to adjust the distance between the self-lubricating sleeve 8 and the lead screw 3a, which is convenient for debugging and assembly. Specifically, the plate body 2 9b is pressed on the plate body 1 9a; the connecting structure includes a strip groove 9a1 vertically penetrating the plate body 1 9a, and the length extension direction of the strip groove 9a1 and the beam 1 are parallel; the plate body 2 9b is correspondingly provided with a threaded hole, and the strip groove 9a1 is provided with a screw 10, the rod of the screw 10 is screwed into the threaded hole, and the head of the screw 10 is tightly pressed on the plate body 1 9a. By turning the screw 10, the plate body 2 9b can be controlled to be in a locked or unlocked state, which has the advantages of simple structure and convenient use. Preferably, there are two strip grooves 9a1 distributed along the width direction of the beam 1, and the screws 10, threaded holes and strip grooves 9a1 are the same in number and have one-to-one corresponding positions.

[0038] Embodiment 2

[0039] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the connection structure includes a screw rod vertically fixed on the top wall of the second plate body 9b, and a clearance groove for the screw rod to pass through is vertically penetrated on the first plate body 9a, the clearance groove is in the shape of an elongated strip, and the length extension directions of the clearance groove and the cross beam 1 are parallel, a pressure cap is screwed on the screw rod, and the pressure cap is tightly pressed on the top wall of the first plate body 9a.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A linear slide with an improved structure, comprising a crossbeam (1), a connecting plate (2) arranged horizontally below the crossbeam (1), and a motor (3) fixed to one side of the crossbeam (1), characterized in that: The motor (3) is a servo screw motor, comprising a screw (3a) arranged horizontally, wherein the outer end of the screw (3a) extends out of the motor (3); the axial direction of the screw (3a) is parallel to the length extension direction of the crossbeam (1), and a nut (4) is installed on the screw (3a); a linear guide rail (5) is horizontally fixed to the bottom of the crossbeam (1), the length extension directions of the linear guide rail (5) and the crossbeam (1) are consistent, and a slider (6) is installed on the linear guide rail (5); the slider (6) and the nut (4) are respectively fixed to the middle and side of the top wall of the connecting plate (2).

2. The improved linear slide according to claim 1, characterized in that: A connecting seat (7) is fixed on the top wall of the connecting plate (2), and the connecting seat (7) is arranged on one side of the linear guide rail (5); the nut (4) comprises a main body which is cylindrical and mounted on the lead screw (3a) and an annular flange (4a) formed on one end of the main body, the annular flange (4a) is fixedly connected to the connecting seat (7), and the connecting seat (7) is penetrated by a through hole (7a) for the lead screw (3a) to pass through.

3. The improved linear slide according to claim 2, characterized in that: The through hole (7a) is circular and matches the main body; the through hole (7a) is open on the upper side, and the main body is inserted into the through hole (7a) through the opening.

4. The improved linear slide according to claim 1, 2 or 3, characterized in that: A cylinder (3b) is formed on the outer end surface of the lead screw (3a), and the cylinder (3b) and the lead screw (3a) are coaxially arranged; a cylindrical self-lubricating sleeve (8) is disposed on the outer surface of the cylinder (3b), the inner circumference of the self-lubricating sleeve (8) and the outer circumference of the cylinder (3b) are attached together, and the self-lubricating sleeve (8) is fixedly connected to the crossbeam (1) via a bracket (9).

5. The improved linear slide according to claim 4, characterized in that: The bracket (9) comprises a horizontally arranged plate body 1 (9a) and a vertically fixed plate body 2 (9b) on the lower side of the plate body 1 (9a). The plate body 1 (9a) is fixedly connected to the crossbeam (1). The cylinder (3b) is located between the plate body 2 (9b) and the lead screw (3a), and one end of the self-lubricating sleeve (8) is fixed on the plate body 2 (9b).

6. The improved linear slide according to claim 5, characterized in that: An annular groove matching the self-lubricating sleeve (8) is provided on one side of the plate body 2 (9b) close to the lead screw (3a), and an end of the self-lubricating sleeve (8) away from the lead screw (3a) is clamped in the annular groove.

7. The improved linear slide according to claim 5, characterized in that: The second plate body (9b) is connected to the first plate body (9a) via a connecting structure so that the second plate body (9b) can slide back and forth along the length direction of the crossbeam (1), and under the action of the connecting structure, the second plate body (9b) can be locked in a sliding position.

8. The improved linear slide according to claim 7, characterized in that: The second plate (9b) is pressed against the first plate (9a); the connection structure comprises a strip groove (9a1) vertically penetrating the first plate (9a), and the length extension directions of the strip groove (9a1) and the crossbeam (1) are parallel; a threaded hole is correspondingly provided on the second plate (9b), a screw (10) is provided in the strip groove (9a1), the rod of the screw (10) is screwed into the threaded hole, and the head of the screw (10) is tightly pressed against the first plate (9a).

9. The improved linear slide according to claim 6, characterized in that: The self-lubricating shaft sleeve (8) is welded and fixedly connected to the second plate body (9b).

10. The improved linear slide according to claim 7, characterized in that: The second plate (9b) is pressed against the first plate (9a); the connection structure includes a screw rod vertically fixed on the top wall of the second plate (9b); a clearance groove for the screw rod to pass through is vertically penetrated on the first plate (9a); the clearance groove is in the shape of an elongated strip, and the length extension directions of the clearance groove and the cross beam (1) are parallel; a pressure cap is screwed on the screw rod, and the pressure cap is tightly pressed against the top wall of the first plate (9a).

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