A liftable cradle structure

Abstract

The utility model relates to machine tool technical field, concretely is a bracket structure of liftable, it can conveniently realize the free adjustment of workpiece center height, it includes bracket main part and workstation base, its characterized in that, the workstation support board is set up between the bracket main part with the workstation base, the bottom of bracket main part and the top of workstation support board are horizontal sliding fit, the bottom of workstation support board and the top of workstation base are inclined wedge fit, the bottom of workstation support board is connected with inclined arrangement's lead screw through screw rod nut, the lead screw is connected and is installed servo motor on the workstation base, the bracket main part and workstation base are provided with vertical guide mechanism.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a liftable bracket structure. Background Technology

[0002] The bracket is one of the important components of a machine tool. The bracket can be used to fix the workpiece. In order to meet the adjustment of the workpiece center height, a lifting mechanism is set at the bottom of the bracket. The existing lifting mechanism generally adopts a bolt lifting mechanism, which uses the bottom bolts to support the bracket and adjusts the height of the bolts to adjust the height of the bracket. This is cumbersome and inefficient. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a liftable bracket structure, which can easily realize the free adjustment of the center height of the workpiece.

[0004] The technical solution is as follows: a liftable bracket structure, comprising a bracket body and a worktable base, characterized in that a worktable support plate is provided between the bracket body and the worktable base, the bottom of the bracket body and the top of the worktable support plate are in horizontal sliding fit, the bottom of the worktable support plate and the top of the worktable base are in wedge fit, the bottom of the worktable support plate is connected to an inclined lead screw via a lead screw nut, the lead screw is connected to a servo motor mounted on the worktable base, and a vertical guide mechanism is provided between the bracket body and the worktable base.

[0005] A further feature is that the bottom of the workbench support plate and the bottom of the workbench base are connected by a dovetail-shaped wedge guide rail. The lead screw is a ball screw, and a harmonic reducer is provided between the ball screw and the output shaft of the servo motor; The servo motor is covered by a motor housing. The servo motor is connected to the workbench base via a motor mount, and an accordion-style protective cover is provided between the upper end of the motor mount and the workbench support plate. Rubber water-blocking sheets are installed around the main body of the bracket; The vertical guide mechanism includes a vertical guide rod fixed to the workbench base and a guide block fixed to the bracket body, wherein the vertical guide rod passes through the guide block and is slidably engaged; A position sensor transmitting module and a position sensor receiving module are provided between the bracket body and the workbench base; The bracket body includes a guide wheel seat, with the front and rear ends of the guide wheel seat respectively disposed on the front support and the rear support. The front support and the rear support are connected to a support plate, and a guide plate is installed on the support plate.

[0006] By adopting this utility model, a servo motor drives a lead screw, allowing the worktable support plate to change height along the inclined wedge guide rail. The vertical guide mechanism restricts the movement of the bracket body in the height direction, facilitating the free adjustment of the center height of the workpiece on the bracket. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a longitudinal sectional view of the present invention. Detailed Implementation

[0008] See Figure 1 and Figure 2 As shown, a liftable bracket structure includes a bracket body 1 and a worktable base 2. A worktable support plate 3 is disposed between the bracket body 1 and the worktable base 2. The bottom of the bracket body 1 and the top of the worktable support plate 3 are in a horizontal sliding fit, while the bottom of the worktable support plate 3 and the top of the worktable base 1 are in a wedge fit. Specifically, a dovetail-shaped wedge guide rail is used, and an insert is added to ensure a tight fit and allow for appropriate adjustment of the tightness. The bottom of the worktable support plate 3 is connected to an inclined ball screw 5 via a screw nut 4. The ball screw 5 is connected to and installed on... A harmonic reducer 11 is also provided between the servo motor 6 on the worktable base 2, the ball screw 5 and the output shaft of the servo motor 6, for precise control of displacement. A vertical guide mechanism is provided between the bracket body 1 and the worktable base 2. The vertical guide mechanism includes a vertical guide rod 8 fixed on the worktable base 2 and a guide block 9 fixed on the bracket body 1. A guide rod seat 10 for fixing the vertical guide rod 8 is installed on the worktable base 2. The vertical guide rod 8 passes through the guide block 9 and is slidably engaged, ensuring that there is only a change in height between the bracket body 1 and the worktable base plate 3, and the lateral position remains unchanged.

[0009] To achieve good waterproofing, the servo motor 6 is equipped with a motor cover 12. The servo motor 6 is connected to the workbench base 2 through the motor base 13. An accordion-style protective cover 14 is provided between the upper end of the motor base 13 and the workbench support plate 3. Rubber water-blocking sheets 15 are installed around the bracket body 1.

[0010] A position sensor transmitting module 16 and a position sensor receiving module 7 are provided between the bracket body 1 and the workbench base 2 to determine the lifting position of the bracket body 1.

[0011] The bracket body 1 includes a guide wheel seat 1-1. The front and rear ends of the guide wheel seat 1-1 are respectively set on the front bracket 1-2 and the rear bracket 1-3. The front bracket 1-2 and the rear bracket 1-3 are connected to the support plate 1-4. The support plate 1-4 is equipped with a guide plate 1-5.

[0012] The servo motor 6 drives the ball screw 5 to rotate, and the screw nut 4 moves on the ball screw 5. When it tilts downward, it moves the worktable support plate 3 to the left and the height of the upper end face decreases, causing the bracket body 1 to descend. When it tilts upward, it moves the worktable support plate 3 to the right and the height of the upper end face increases, causing the bracket body 1 to rise. The center height of the workpiece changes with the descent or rise of the bracket body 1.

Claims

1. A liftable bracket structure, comprising a bracket body and a worktable base, characterized in that, A worktable support plate is provided between the bracket body and the worktable base. The bottom of the bracket body and the top of the worktable support plate are in a horizontal sliding fit. The bottom of the worktable support plate and the top of the worktable base are in a wedge fit. The bottom of the worktable support plate is connected to an inclined lead screw through a lead screw nut. The lead screw is connected to a servo motor installed on the worktable base. A vertical guide mechanism is provided between the bracket body and the worktable base.

2. The liftable bracket structure according to claim 1, characterized in that, The bottom of the workbench support plate and the bottom of the workbench base are connected by a dovetail-shaped wedge guide rail.

3. The liftable bracket structure according to claim 1, characterized in that, The lead screw is a ball screw, and a harmonic reducer is provided between the ball screw and the output shaft of the servo motor.

4. The liftable bracket structure according to claim 1, characterized in that, The servo motor is covered by a motor housing.

5. The liftable bracket structure according to claim 1, characterized in that, The servo motor is connected to the workbench base via a motor mount, and an accordion-style protective cover is provided between the upper end of the motor mount and the workbench support plate.

6. The liftable bracket structure according to claim 1, characterized in that, Rubber water-blocking sheets are installed around the main body of the bracket.

7. The liftable bracket structure according to claim 1, characterized in that, The vertical guide mechanism includes a vertical guide rod fixed to the workbench base and a guide block fixed to the bracket body. The vertical guide rod passes through the guide block and is slidably engaged.

8. The liftable bracket structure according to claim 1, characterized in that, A position sensor transmitting module and a position sensor receiving module are provided between the bracket body and the workbench base.

9. The liftable bracket structure according to claim 1, characterized in that, The bracket body includes a guide wheel seat, with the front and rear ends of the guide wheel seat respectively disposed on the front support and the rear support. The front support and the rear support are connected to a support plate, and a guide plate is installed on the support plate.

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