High-precision long lead screw working platform

Abstract

The utility model relates to the field of ball screws, in particular to a high-precision long screw working platform which comprises a working platform and a base, and a screw is rotatably arranged on the base. The supporting blocks are arranged on the lead screw and located between the working platform and the base, the supporting blocks drive the working platform to slide in the length direction of the lead screw, the number of the supporting blocks is at least three in the moving direction of the working platform, and the supporting blocks located at the two ends are connected with sliding block assemblies; the guide rail is arranged on the base and is parallel to the lead screw, and the sliding block assembly is matched with the guide rail. The multiple supporting blocks are arranged between the working platform and the lead screw, the loading capacity of the equipment is greatly enhanced, the supporting blocks at the two ends play a supporting role by being connected with the sliding blocks, the lead screw can be used for driving under some long-stroke working conditions, it is guaranteed that the lead screw cannot be bent, the precision of the lead screw cannot be affected, and the service life of the equipment is prolonged. Meanwhile, under the condition that a plurality of supporting blocks work simultaneously, the stroke cannot be wasted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ball screw, especially to a high-precision long screw working platform. BACKGROUND

[0002] With the development of automation more and more rapidly, more and more manufacturers use screw to drive the working platform, because the precision of the screw is high. In some components with long moving stroke, long screw is needed to provide driving, but the screw will bend in the sliding process of the nut, which reduces the precision of the screw and the whole equipment.

[0003] In the existing long screw structure, in order to prevent the screw from bending, a support seat is arranged on the screw, which can support the screw, but the stroke length of the support screw is limited. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the problems in the background art.

[0005] Therefore, the utility model provides a high-precision long screw working platform.

[0006] The utility model adopts the technical scheme that:

[0007] A high-precision long screw working platform comprises,

[0008] a working platform, and

[0009] a base, wherein the base is provided with a screw rotating thereon;

[0010] support blocks, which are arranged on the screw and located between the working platform and the base, drive the working platform to slide along the length direction of the screw, and at least three support blocks are arranged along the moving direction of the working platform, wherein the support blocks at both ends are connected with slider assemblies;

[0011] guide rails, which are arranged on the base and arranged in parallel with the screw, and the slider assemblies and the guide rails are matched with each other.

[0012] Further, some of the support blocks are threadedly matched with the screw, some of the support blocks are slidingly matched with the screw, or all the support blocks are threadedly matched with the screw.

[0013] Further, the support blocks threadedly matched with the screw comprise nuts and nut seats, the nuts are threadedly connected with the screw, and the nut seats are sleeved on the nuts.

[0014] Further, the sliding block assembly comprises a sliding block arranged on the guide rail in sliding fit with the guide rail, and the sliding block is arranged opposite to the support block, and a connecting plate is connected between the sliding block and the support block.

[0015] Further, the sliding block assembly further comprises a sliding block mounting plate mounted on the top of the sliding block, and the top surface of the sliding block mounting plate is flush with the top surface of the support block.

[0016] Further, the opposite side walls of the support block are each provided with a slot, one end of the connecting plate is inserted into the slot, and the other end is connected between the sliding block and the sliding block mounting plate.

[0017] Further, a locking assembly is further included, and the locking assembly is used for controlling the locking or disconnection relationship between the support block close to the end of the lead screw, the workbench and the sliding block assembly.

[0018] Further, the locking assembly comprises:

[0019] a locking piece inserted between the workbench and the support block;

[0020] a push plate extending into the connecting plate, and a limiting hole for inserting the locking piece is formed in the push plate;

[0021] wherein, the support block is provided with a through hole for inserting the locking piece, the connecting plate is provided with an avoiding hole opposite to the through hole, when the support block moves to the position close to the end of the lead screw, the limiting hole moves to the position opposite to the through hole, the locking piece is inserted into the limiting hole, and the locking piece is separated from the workbench.

[0022] Further, the connecting plate is provided with a cavity for inserting the push plate, and a spring is arranged between the end surface of the push plate close to the support block and the inner cavity of the connecting plate.

[0023] Further, one end of the base is connected with a mounting seat, the mounting seat is connected with a driving source, one end of the lead screw is connected with the output shaft of the driving source through a shaft coupling, and the other end of the lead screw is connected with the base through a support seat.

[0024] The beneficial effects of the utility model are that, on the one hand, a plurality of support blocks are arranged between the workbench and the lead screw, the load capacity of the equipment is greatly improved, the two end support blocks are connected with the sliding blocks to play a supporting role, the lead screw can be driven in some long-stroke working conditions, the bending of the lead screw is prevented, the precision of the lead screw is not affected, and the stroke is not wasted in the case that the plurality of support blocks work simultaneously.

[0025] In another aspect, the locking assembly is arranged to control the support block near the end of the lead screw to release the connection relationship between the support block and the work platform when moving to the end position of the lead screw, and the work platform and other support blocks can continue to move, so as to make full use of the lead screw to expand the moving stroke of the work platform. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further explained in connection with the drawings and embodiments.

[0027] Figure 1 is the structure schematic view of high-precision long lead screw work platform in embodiment 1 of the utility model.

[0028] Figure 2 is the structure schematic view of the position relationship between the lead screw and the support block in embodiment 1 of the utility model.

[0029] Figure 3 is the structure schematic view of the position relationship between the support block and the sliding block in embodiment 1 of the utility model.

[0030] Figure 4 is the structure schematic view of the position relationship between the pushing piece and the sliding block in embodiment 2 of the utility model.

[0031] Figure 5 is the structure schematic view of the locking assembly in embodiment 2 of the utility model.

[0032] Figure 6 is the A part enlarged view for embodying Figure 5 the position relationship between the locking piece and the support plate.

[0033] In the drawing: 1, base; 11, support seat; 12, mounting seat; 13, driving source; 2, work platform; 3, lead screw; 4, support block; 41, nut seat; 42, slot; 43, through hole; 44, nut; 5, guide assembly; 51, guide rail; 52, sliding block; 53, mounting plate; 54, connecting plate; 541, avoiding hole; 6, locking assembly; 61, push plate; 62, locking piece; 63, pushing piece; 64, spring; 65, limiting hole. DETAILED DESCRIPTION

[0034] The utility model will be further explained in connection with the drawings and embodiments.

[0035] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0036] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] Embodiment 1

[0038] A high-precision long screw rod 3 working platform 2, including base 1, working platform 2, guide assembly 5, screw rod 3 and support block 4.

[0039] The screw rod 3 is rotatably arranged on the base 1, one end of the base 1 is connected with the mounting seat 12, the mounting seat 12 is connected with the driving source 13, the other end of the base 1 is connected with the supporting seat 11, one end of the screw rod 3 is connected with the output shaft of the driving source 13 through the shaft coupling, and the other end is rotatably connected with the supporting seat 11. A plurality of support blocks 4 are arranged along the axial direction of the screw rod 3, the number of support blocks 4 is at least three, the support blocks 4 are connected to the bottom of the working platform 2, the support blocks 4 are sleeved on the screw rod 3, part or all of the plurality of support blocks 4 are threadedly connected with the screw rod 3, and the support blocks 4 threadedly connected with the screw rod 3 include the nut 44 and the nut seat 41, the nut 44 is sleeved on the screw rod 3 and threadedly connected with the screw rod 3, and the nut seat 41 is sleeved on the nut 44.

[0040] The plurality of support blocks 4 are supported between the working platform 2 and the screw rod 3, the plurality of support blocks 3 not only play a role of load, but also play a role of support. Prevent the screw rod 3 from being too long and bending, which affects the precision.

[0041] The guide assembly 5 comprises two guide rails 51 arranged on both sides of the lead screw 3 in parallel with the lead screw 3 and a slider assembly connected with the support blocks at both ends of the plurality of support blocks, the slider assembly comprising a slider 52 and a slider mounting plate 53, and the slider 52 is connected with the support block 4 through a connecting plate 54. Specifically, the top surface of the slider 52 is connected with the slider mounting plate 53 to ensure that the top surface of the slider mounting plate 53 is on the same horizontal plane as the top surface of the support block 4, thereby ensuring the levelness of the installation of the work platform 2.

[0042] Specifically, each of the opposite side walls of the support block 4 is provided with a slot 42, and it should be noted that when the support block 4 is threadedly connected with the lead screw 3, the slot 42 is specifically provided on the side wall of the nut seat 42, one end of the connecting plate 54 is inserted into the slot 42, and the other end is connected between the slider 52 and the slider mounting plate 53 to ensure that the slider 52 is firmly connected with the support block 4 and the positioning of the support plate is accurate, thereby preventing the lead screw 3 from bending due to insufficient strength when the long lead screw 3 is used.

[0043] In the embodiment, three support blocks 4 are provided, of which two support blocks 4 near the end of the lead screw 3 are in sliding connection with the lead screw 3, and the middle support block 4 is in threaded connection with the lead screw 3.

[0044] Embodiment 2

[0045] A high-precision long lead screw 3 work platform 2 further comprises a locking assembly 6.

[0046] On the basis of embodiment 1, the support blocks 4 near the end of the lead screw 3 are in sliding connection with the lead screw 3 and are detachably connected with the work platform 2, when the support blocks 4 at both ends are moved to the position of the end of the lead screw 3 and cannot be moved any further, the locking assembly 6 controls the disconnection between the end support block 4 and the work platform 2, so that the work platform 2 and the other support blocks 4 can continue to move, thereby making full use of the lead screw 3 to expand the moving stroke of the work platform 2.

[0047] The locking assembly 6 comprises a pushing piece 63, a pushing plate 61 and a locking piece 62, the pushing plate 61 is horizontally arranged, the pushing plate 61 extends into the connecting plate 54 through the sliding block mounting plate 53, the connecting plate 54 is provided with a cavity for inserting the pushing plate 61, and the pushing plate 61 and the end face of the connecting plate 54 cavity close to the support block 4 are provided with a spring 64. The pushing plate 61 slides towards the support block 4, the top surface of the support block 4 which is in sliding cooperation with the lead screw 3 is provided with a through hole 43, the through hole 43 is in communication with the insertion slot 42, the connecting plate 54 is provided with an avoiding hole 541 opposite to the through hole 43, the pushing plate 61 is provided with a limiting hole 65, the locking piece 62 is inserted into the through hole 43, and the pushing piece 63 is a pneumatic cylinder, the pushing piece 63 is arranged on the side of the sliding block 52 away from the support block 4 and close to the end of the lead screw 3, and the pushing piece 63 is used for pushing the pushing plate 61 towards the support block 4. In other embodiments, the pushing plate 61 can be arranged along the length direction of the lead screw 3, and the end of the pushing plate 61 away from the spring 64 is arranged towards the support seat 11.

[0048] When the spring 64 is in a natural state, one end of the locking piece 62 abuts against the top of the pushing plate 61, and the other end is inserted into the working platform 2, so that the support block 4 and the working platform 2 maintain a connection relationship, and at this time, the limiting hole 65 is located on the side of the locking piece 62 close to the sliding block 52; when the support block 4 close to the end of the lead screw 3 moves to the position of the end of the lead screw 3, the pushing piece 63 pushes the pushing plate 61, the spring 64 is compressed, the limiting hole 65 is opposite to the locking piece 62, one end of the locking piece 62 is inserted into the limiting hole 65, and the other end of the locking piece 62 is separated from the working platform 2, so that the position of the support block 4 remains unchanged, and at this time, the working platform 2 and other support blocks 4 continue to move.

[0049] In one aspect of the present application, a plurality of support blocks 4 are arranged between the working platform 2 and the lead screw 3, which greatly enhances the load capacity of the device, and the support blocks 4 at both ends are connected with the sliding block 52 to play a supporting role, and in some long-stroke working conditions, the lead screw 3 can also be driven, so that the lead screw is not bent and the accuracy of the lead screw 3 is not affected, and at the same time, in the case that multiple support blocks 4 work simultaneously, the stroke is not wasted.

[0050] On the other hand, the locking assembly 6 is arranged, the support block 4 close to the end of the lead screw 3 is controlled to release the connection relationship between the support block 4 and the working platform 2 when moving to the position of the end of the lead screw 3, and the working platform 2 and other support blocks 4 can continue to move, so that the lead screw 3 is fully utilized to expand the moving stroke of the working platform 2.

[0051] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined by the scope of the claims.

Claims

1. A high-precision long-filament screw work platform, characterized in that, Including, a work platform (2), and a base (1), a screw rod (3) is arranged on the base (1) and rotates; a support block (4) is arranged on the screw rod (3) and is located between the work platform (2) and the base (1), the support block (4) drives the work platform (2) to slide along the length direction of the screw rod (3), and at least three support blocks (4) are arranged along the moving direction of the work platform (2), wherein the support blocks (4) at both ends are connected with a sliding block assembly; a guide rail (51) is arranged on the base (1) and is arranged in parallel with the screw rod (3), and the sliding block assembly cooperates with the guide rail (51).

2. The high-precision long-filament screw work platform according to claim 1, wherein, Part of the plurality of support blocks (4) threadedly cooperates with the screw rod (3), part of the support blocks (4) slidingly cooperates with the screw rod (3), or all the support blocks (4) threadedly cooperates with the screw rod (3).

3. The high-precision long-filament screw work platform according to claim 2, characterized in that, The support block (4) threadedly cooperating with the screw rod (3) comprises a nut (44) and a nut seat (41), the nut (44) is threadedly connected with the screw rod (3), and the nut seat (41) is sleeved on the nut (44).

4. The high-precision long-filament screw work platform according to claim 1, wherein, The sliding block assembly comprises a sliding block (52), the sliding block (52) is arranged on the guide rail (51) and slidingly cooperates with the guide rail (51), the sliding block (52) is oppositely arranged with the support block (4), and a connecting plate (54) is connected between the sliding block (52) and the support block (4).

5. The high-precision long-filament screw work platform according to claim 4, characterized in that, The sliding block assembly further comprises a sliding block mounting plate (53), the sliding block mounting plate (53) is mounted on the top of the sliding block (52), and the top surface of the sliding block mounting plate (53) is flush with the top surface of the support block (4).

6. The high-precision long-filament screw work platform according to claim 5, wherein, One insertion slot (42) is arranged on the opposite side wall of the support block (4), one end of the connecting plate (54) is inserted into the insertion slot (42), and the other end is connected between the sliding block (52) and the sliding block mounting plate (53).

7. The high-precision long-filament screw work platform according to claim 1, wherein, Further comprising a locking assembly (6), the locking assembly (6) is used for controlling the locking or disconnection relationship between the support block (4) close to the end of the screw rod (3), the work platform (2) and the sliding block assembly.

8. The high-precision long-filament screw work platform according to claim 7, characterized in that, The locking assembly (6) comprises: a locking piece (62) inserted between the work platform (2) and the support block (4); a push plate (61) extending into the connecting plate (54), and a limiting hole (65) for inserting the locking piece (62) is formed in the push plate (61); wherein, a through hole (43) for inserting the locking piece (62) is arranged on the support block (4), and an avoiding hole (541) opposite to the through hole (43) is arranged on the connecting plate (54), when the support block (4) moves to the position close to the end of the screw rod (3), the limiting hole (65) moves to the position opposite to the through hole (43), the locking piece (62) is inserted into the limiting hole (65), and the locking piece (62) is separated from the work platform (2).

9. The high-precision long-filament screw work platform according to claim 8, characterized in that, A cavity for inserting the push plate (61) is arranged on the connecting plate (54), and a spring (64) is arranged between the end face of the cavity in the connecting plate (54) close to the support block (4) and the push plate (61).

10. The high-precision long-filament screw work platform according to claim 1, wherein, One end of the base (1) is connected with a mounting seat (12), the mounting seat (12) is connected with a driving source (13), one end of the lead screw (3) is connected with the output shaft of the driving source (13) through a shaft coupling, the other end of the lead screw (3) is connected with the base (1) through a support seat (11).

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