Adjustable ball screw positioning device

Abstract

The utility model discloses an adjustable ball screw positioning device which comprises a working table, the bottom end of the working table is fixedly connected with a support, the top end of the working table is provided with a positioning device, and when a rotating ball is extruded, a moving rod is driven to move in a moving groove and extrudes a second spring. A rotating disc is rotated, the rotating disc drives a threaded rod to rotate, the threaded rod rotates to drive a connecting block to move downwards, the connecting block moves downwards to drive an upper fixing block to move downwards, and the upper fixing block moves downwards to drive a frame to move downwards; the frame moves downwards to drive the rotating roller to extrude the ball screw, the rotating roller is extruded to drive the frame to move in the movable cavity, at the moment, the frame extrudes the first spring, the first spring is extruded to provide supporting force in the opposite direction for the frame, and the ball screw is further positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to an adjustable ball screw positioning device. Background Technique

[0002] The ball screw is an ideal product for converting rotary motion into linear motion or vice versa; the ball screw is the most commonly used transmission element in machine tools and precision machinery. Its main function is to convert rotational motion into linear motion, or convert torque into axial reciprocating force, and at the same time has the characteristics of high precision, reversibility and high efficiency.

[0003] The publication number CN207093694U discloses a ball screw positioning device, including a support and a slider. A guide rail is provided on the support, the slider is slidably connected to the guide rail, chutes are provided on both sides of the guide rail on the support, the slider is slidably connected to the chutes, a vertical rod is fixed on the slider, a cross rod is fixed at the end of the vertical rod, a semi-circular locking ring is fixed at the end of the cross rod, locking ears are provided at both ends of the semi-circular locking ring, and the two semi-circular locking rings are connected through the locking ears to form a complete locking ring, and an elastic pad is provided on the inner side of the semi-circular locking ring.

[0004] In the above technical solution, although it is possible to prevent the ball screw from jittering during the positioning process of the ball screw, during the positioning process of the ball screw, there is too much contact with the outer surface of the ball screw, which may cause the ball screw to work abnormally during operation, and long-term friction may cause positioning deviation, and it is not convenient to adjust the fixed position, and it cannot well adapt to the fixation of different lengths of screws, reducing the practicability of the device. Content of the Utility Model

[0005] The purpose of the utility model is to provide an adjustable ball screw positioning device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an adjustable ball screw positioning device, including a workbench, the bottom end of the workbench is fixedly connected with a bracket, the top end of the workbench is provided with a positioning device, the inside of the positioning device includes a lower fixing block, the outer wall of the lower fixing block is fixedly connected with a column, the top end of the column is rotatably connected with a threaded rod, the top end of the threaded rod is fixedly connected with a turntable, the outer wall of the threaded rod penetrates and is threadedly connected with a connecting block, the end of the connecting block away from the threaded rod is fixedly connected with an upper fixing block, an activity cavity is opened at the bottom end inside the upper fixing block, a first spring is fixedly connected to the top end inside the activity cavity, a frame is fixedly connected to the bottom end of the first spring, and a roller is rotatably connected to the inner wall of the frame.

[0007] As a further preferred embodiment of the technical solution, a cushion block is fixedly connected to the top end of the lower fixed block, and a movable groove is provided on the inner wall of the lower fixed block.

[0008] As a further preferred embodiment of the present technical solution, a second spring is fixedly connected to the inner wall of the movable groove, and an end of the second spring away from the movable groove is fixedly connected to a movable rod.

[0009] As a further preferred embodiment of the present technical solution, the outer wall of the movable rod is fixedly connected to a fixed disk, and the outer wall of the fixed disk is rotatably connected to a rotating ball.

[0010] As a further preferred embodiment of the present technical solution, an adjusting device is provided inside the workbench, a sliding groove is provided inside the workbench, and a sliding block is slidably connected to the inner wall of the sliding groove.

[0011] As a further preferred embodiment of the present technical solution, the top end of the sliding block is fixedly connected to the bottom end of the lower fixed block, the bottom end of the sliding block is fixedly connected to a third spring, and the bottom end of the third spring is fixedly connected to a fixed plate.

[0012] As a further preferred embodiment of the present technical solution, an insert rod is fixedly connected to the outer wall of the fixing plate, and a slot is provided at the bottom end of the workbench.

[0013] The utility model provides an adjustable ball screw positioning device, which has the following beneficial effects:

[0014] (1) The utility model drives the moving rod to move inside the moving groove and squeeze the second spring when the rotating ball is squeezed. When the second spring is squeezed, it relies on its own elastic force to support the moving rod, and then fixes the ball screw. The turntable is rotated, and the turntable drives the threaded rod to rotate. The rotation of the threaded rod drives the connecting block to move downward. The downward movement of the connecting block drives the upper fixed block to move downward. The downward movement of the upper fixed block drives the frame to move downward. The downward movement of the frame drives the roller to squeeze the ball screw. The roller is squeezed and drives the frame to move inside the movable cavity. At this time, the frame squeezes the first spring. The squeezed first spring provides a supporting force in the opposite direction to the frame, thereby further positioning the ball screw.

[0015] (2) The utility model moves the fixed plate downward, and the fixed plate drives the third spring to stretch, while driving the insertion rod to disengage from the interior of the slot. At this time, the sliding block disengages from the limit, and the lower fixed block is moved. When it moves to a suitable position, the force on the fixed plate is released, and the third spring drives the fixed plate to reset. The reset of the fixed plate drives the insertion rod to insert into the interior of the slot to limit the lower fixed block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the overall three-dimensional appearance structure of the present utility model;

[0017] Figure 2 Schematic diagram of the overall sectional structure of the present utility model;

[0018] Figure 3 Schematic diagram of the positioning device structure of the present utility model;

[0019] Figure 4 Schematic diagram of the adjusting device structure of the present utility model.

[0020] In the figure: 1, workbench; 2, bracket; 3, positioning device; 31, lower fixing block; 32, upper fixing block; 33, column; 34, connecting block; 35, threaded rod; 36, turntable; 37, movable cavity; 38, first spring; 39, frame; 310, roller; 311, cushion block; 312, moving groove; 313, second spring; 314, fixed disk; 315, rotating ball; 316, moving rod; 4, adjusting device; 41, sliding groove; 42, sliding block; 43, third spring; 44, fixing plate; 45, inserting rod; 46, inserting slot. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] The present utility model provides a technical solution: As Figures 1 to 4 shown, in this embodiment, an adjustable ball screw positioning device includes a workbench 1, a bracket 2 is fixedly connected to the bottom end of the workbench 1, a positioning device 3 is arranged on the top end of the workbench 1, the inside of the positioning device 3 includes a lower fixing block 31, a column 33 is fixedly connected to the outer wall of the lower fixing block 31, a threaded rod 35 is rotatably connected to the top end of the column 33, a turntable 36 is fixedly connected to the top end of the threaded rod 35, a connecting block 34 is penetrated and threadedly connected to the outer wall of the threaded rod 35, an upper fixing block 32 is fixedly connected to the outer wall of the connecting block 34 away from the threaded rod 35, a movable cavity 37 is opened at the bottom end inside the upper fixing block 32, a first spring 38 is fixedly connected to the top end inside the movable cavity 37, a frame 39 is fixedly connected to the bottom end of the first spring 38, and a roller 310 is rotatably connected to the inner wall of the frame 39.

[0023] Among them, a cushion block 311 is fixedly connected to the top end of the lower fixing block 31, and a moving groove 312 is opened in the inner wall of the lower fixing block 31.

[0024] Through the cushion block 311, during the process of positioning the ball screw, the friction between the lower fixing block 31 and the ball screw can be reduced.

[0025] Among them, a second spring 313 is fixedly connected to the inner wall of the moving groove 312, and one end of the second spring 313 away from the moving groove 312 is fixedly connected to a moving rod 316.

[0026] Through the second spring 313, when the second spring 313 relies on its own elastic force, it can provide a supporting force for the moving rod 316.

[0027] Among them, a fixed disk 314 is fixedly connected to the outer wall of the moving rod 316, and a rotating ball 315 is rotatably connected to the outer wall of the fixed disk 314.

[0028] Through the rotating ball 315, when the rotating ball 315 positions the ball screw, the rotating ball 315 can move while moving, further increasing the positioning effect on the ball screw.

[0029] Among them, an adjusting device 4 is arranged inside the workbench 1, a sliding groove 41 is opened inside the workbench 1, and a sliding block 42 is slidably connected to the inner wall of the sliding groove 41.

[0030] Through the sliding block 42, the movement of the sliding block 42 can drive the lower fixed block 31 to move, thereby adjusting the position of the positioning device 3.

[0031] Among them, the top end of the sliding block 42 is fixedly connected to the bottom end of the lower fixed block 31, the bottom end of the sliding block 42 is fixedly connected to a third spring 43, and the bottom end of the third spring 43 is fixedly connected to a fixing plate 44.

[0032] Through the third spring 43, when the third spring 43 is not affected by external forces, it can limit the position of the fixing plate 44.

[0033] Among them, a plug rod 45 is fixedly connected to the outer wall of the fixing plate 44, and a plug slot 46 is opened at the bottom end of the workbench 1.

[0034] Through the plug slot 46, the plug rod 45 is inserted into the inside of the plug slot 46, thereby limiting the position of the lower fixed block 31.

[0035] The present utility model provides an adjustable ball screw positioning device, and the specific working principle is as follows:

[0036] If it is necessary to position the ball screw, place the ball screw above the pad 311, and the ball screw squeezes the rotating ball 315. When the rotating ball 315 is squeezed, it drives the moving rod 316 to move inside the moving groove 312 and squeezes the second spring 313. When the second spring 313 is squeezed, it relies on its own elastic force to support the moving rod 316, thereby fixing the ball screw, rotating the turntable 36, and the turntable 36 drives the threaded rod 35 to rotate. The rotation of the threaded rod 35 drives the connecting block 34 to move downward. The connecting block 34 moves downward and drives the upper fixed block 32 to move downward. The upper fixed block 32 moves downward and drives the frame 39 to move downward. The frame 39 moves downward and drives the roller 310 to squeeze the ball screw. The roller 310 is squeezed and drives the frame 39 to move inside the movable cavity 37. At this time, the frame 39 squeezes the first spring 38. The first spring 38 is squeezed to provide a supporting force in the opposite direction to the frame 39, so as to further position the ball screw. If it is necessary to adjust the position of the positioning device 3, the fixed plate 44 is moved downward. The fixed plate 44 drives the third spring 43 to stretch and drives the insertion rod 45 to disengage from the inside of the slot 46. At this time, the sliding block 42 disengages from the limit and moves the lower fixed block 31. When it moves to the appropriate position, it disengages from the force on the fixed plate 44. The third spring 43 drives the fixed plate 44 to reset. The fixed plate 44 resets and drives the insertion rod 45 to insert into the inside of the slot 46 to limit the lower fixed block 31.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable ball screw positioning device, comprising a workbench (1), characterized in that: The bottom end of the workbench (1) is fixedly connected to a bracket (2), and the top end of the workbench (1) is provided with a positioning device (3), the interior of the positioning device (3) includes a lower fixed block (31), the outer wall of the lower fixed block (31) is fixedly connected to a column (33), the top end of the column (33) is rotatably connected to a threaded rod (35), the top end of the threaded rod (35) is fixedly connected to a turntable (36), the outer wall of the threaded rod (35) penetrates and is threadedly connected to a connecting block (34), the outer wall of the connecting block (34) away from the threaded rod (35) is fixedly connected to an upper fixed block (32), the inner bottom end of the upper fixed block (32) is provided with an active cavity (37), the inner top end of the active cavity (37) is fixedly connected to a first spring (38), the bottom end of the first spring (38) is fixedly connected to a frame (39), and the inner wall of the frame (39) is rotatably connected to a roller (310).

2. The adjustable ball screw positioning device according to claim 1, characterized in that: A cushion block (311) is fixedly connected to the top of the lower fixed block (31), and a movable groove (312) is provided on the inner wall of the lower fixed block (31).

3. The adjustable ball screw positioning device according to claim 2, characterized in that: A second spring (313) is fixedly connected to the inner wall of the movable groove (312), and one end of the second spring (313) away from the movable groove (312) is fixedly connected to a movable rod (316).

4. The adjustable ball screw positioning device according to claim 3, characterized in that: The outer wall of the moving rod (316) is fixedly connected to a fixed disk (314), and the outer wall of the fixed disk (314) is rotatably connected to a rotating ball (315).

5. The adjustable ball screw positioning device according to claim 4, characterized in that: An adjusting device (4) is arranged inside the workbench (1), a sliding groove (41) is opened inside the workbench (1), and a sliding block (42) is slidably connected to the inner wall of the sliding groove (41).

6. The adjustable ball screw positioning device according to claim 5, characterized in that: The top end of the sliding block (42) is fixedly connected to the bottom end of the lower fixed block (31), the bottom end of the sliding block (42) is fixedly connected to a third spring (43), and the bottom end of the third spring (43) is fixedly connected to a fixed plate (44).

7. The adjustable ball screw positioning device according to claim 6, characterized in that: An insert rod (45) is fixedly connected to the outer wall of the fixing plate (44), and a slot (46) is provided at the bottom end of the workbench (1).

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