CN110695717A - Device for preventing numerical control revolving stage from overturning and deforming - Google Patents

Abstract

The device for preventing the overturning and deformation of the numerical control turntable, including the assembly for preventing the overturning and deformation of the numerical control turntable, the assembly for preventing the overturning and deformation of the numerical control turntable is arranged on the support table, and the assembly for preventing the overturning and deformation of the numerical control turntable includes a large cylindrical roller bearing installed on the annular surface of the support table. The rotary guide rail of the turntable, a large precision ring gear is placed on the upper surface of the large cylindrical roller bearing, the large precision ring gear is connected with the connecting plate by screws, the connecting plate is connected with the worktable by screws, the worktable and the connecting plate, the large precision The ring gear is connected as a whole and revolves around the central shaft assembly together. The invention has the characteristics of simple structure, low cost, stable and reliable performance, simple and easy operation, and good effect of preventing overturning and deformation.

Description

A device for preventing the overturning and deformation of the numerical control turntable

technical field

The invention relates to a device for preventing mechanical deformation, in particular to a device for preventing the overturning and deformation of a numerically controlled turntable.

Background technique

As the core component of CNC machine tools, CNC rotary table has been widely used, which not only expands the application scope of CNC machine tools, but also improves the grade of CNC machine tools and the added value of products. As the fourth axis of the CNC machine tool, the CNC turntable participates in CNC machining. When the installation position of the workpiece is offset, or the center of gravity of the workpiece is seriously deviated from the center of the CNC turntable, the eccentric weight of the workpiece will inevitably cause the CNC turntable to overturn and deform; in addition, the spindle cutting When an upward axial force is generated, or if the axial force is perpendicular to the table surface of the turntable and obviously deviates from the center of the turntable, the cutting force at this time will also cause the CNC turntable to overturn and deform, which will have a significant impact on the machining accuracy of the high-precision CNC turntable. . Therefore, measures should be taken to prevent overturning deformation in the design of CNC turntable.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies of the prior art, the present invention provides a device for preventing the overturning and deformation of the numerical control turntable, which has the characteristics of simple structure, low cost, stable and reliable performance, simple and easy operation, and good effect of preventing overturning and deformation.

In order to achieve the above object, the technical scheme of the present invention is:

The device for preventing the overturning and deformation of the numerical control turntable includes the assembly for preventing the overturning and deformation of the numerical control turntable, the assembly for preventing the overturning and deformation of the numerical control turntable is arranged on the support table 2, and the assembly for preventing the overturning and deformation of the numerical control turntable includes a large cylindrical roller installed on the annular surface of the support table 2 The bearing 1 is used as the rotary guide of the turntable, and the large precision ring gear 14 is placed on the upper surface of the large cylindrical roller bearing 1. The large precision ring gear 14 is connected with the connecting plate 11 through the screw 12, and the connecting plate 11 is connected with the table 10 through the screw. The worktable 10 described above is connected with the connecting plate 11 and the large precision ring gear 14 as a whole and revolves around the central axis assembly 3 together.

The upper part of the support table 2 is connected with the lower seat 6 through the screw 4 , and the upper part of the lower seat 6 is connected with the upper seat 13 through the screw 8 .

The upper seat 13 is integrally connected with the grinding plate 7 through screws 9 .

The said grinding plate 7 is made of copper alloy.

The said assembly for preventing the overturning and deformation of the numerical control turntable consists of 6 groups of parts, which are evenly distributed in the circumferential direction.

Beneficial effects of the present invention:

1. When the center of gravity of the workpiece installed on the CNC turntable is seriously deviated from the center of the turntable, the machine tool produces upward cutting force, or when the cutting force is perpendicular to the surface of the turntable and deviates from the center of the turntable, the surface grinding of the matching grinding plate 7 is used to ensure the matching grinding. The lower surface of the plate 7 and the upper surface of the large precision gear ring 14 form a zero or very small gap, which can effectively prevent the CNC turntable from overturning and deform during the continuous processing of the fourth axis, and ensure the machining accuracy of the CNC turntable.

2. The device for preventing the overturning and deformation of the CNC turntable consists of six groups of parts, which are evenly distributed in the circumferential direction to ensure that the overturning deformation at any position on the turntable can be controlled within the design range.

3. The device has a simple structure, contains few types of parts, is simple and easy to implement, and has low manufacturing costs.

Instruction drawings

FIG. 1 is a cross-sectional view of the present invention in the direction A-A.

Fig. 2 is a plan view of the present invention (removal table 10).

specific implementation

The structural principle and working principle of the present invention will be further described below with reference to the accompanying drawings.

Referring to FIG. 1 , a rotary guide 3 is set on the annular surface of the support table 2, and a large precision gear ring 14 is placed on the upper surface of the rotary guide 3. The large precision gear 14 is connected to the connecting plate 11 through screws 12, and the connecting plate 11 is connected to the working plate through screws. The table 10 is connected, and the work table 10 rotates around the central axis assembly 3 together with the connecting plate 11 and the large precision ring gear 14 . In the assembly for preventing the numerical control turntable from overturning and deforming, the lower seat 6 is connected with the support table 2 through the screw 4 . The upper seat 13 is connected with the lower seat 6 through the screw 8 . The grinding plate 7 is integrally connected with the upper seat 13 by means of screws 9 . The grinding plate 7 should not only ensure that the surface has a certain strength and wear resistance, but also ensure that the upper surface of the large precision gear ring 14 will not be scratched when it is in contact with the large precision gear ring 14. quantity.

Referring to FIG. 2 , the described numerical control turntable overturning deformation prevention system consists of 6 groups of parts, which are evenly distributed in the circumferential direction, ensuring that the overturning deformation at any position on the worktable 10 is small and the numerical values are basically the same.

The working principle of the present invention:

When the transmission part transmits the operation command of the servo motor to the large precision ring gear 14, the worktable 10, the connecting plate 11, and the large precision ring gear 14 are connected as a whole to drive the workpiece to rotate, and participate in the fourth axis of the CNC machine tool. Or CNC machining alone. At this time, the upward cutting force generated by the machining, the eccentric load force generated by the offset of the workpiece center of gravity, or the cutting force perpendicular to the surface of the table that is deviated from the center of the turntable will cause the turntable to overturn and deform. Because the device for preventing the overturning deformation of the turntable of the present invention grinds the surface of the matching grinding plate 7, it ensures that the lower surface of the matching grinding plate 7 and the upper surface of the large precision gear ring 14 form zero or very small gaps, and the uniform and uniform Distributed in the circumferential direction, this can effectively prevent the overturning deformation of the CNC turntable during continuous operation, and ensure the machining accuracy of the precision CNC turntable.

Claims (5)

1. Prevent device of numerical control revolving stage deformation of overturning, a serial communication port, including preventing the deformation subassembly of numerical control revolving stage deformation of overturning, prevent that the deformation subassembly of numerical control revolving stage deformation of overturning sets up on brace table (2), prevent that the deformation subassembly of numerical control revolving stage deformation of overturning includes installs large-scale cylindrical roller bearing (1) on the toroidal surface of brace table (2) and regard as the rotary guide of revolving stage, large-scale accurate ring gear (14) have been placed to large-scale cylindrical roller bearing (1) upper surface, large-scale accurate ring gear (14) are connected with connection pad (11) through screw (12), connection pad (11) are connected with workstation (10) through the screw, workstation (10) and connection pad (11), large-scale accurate ring gear (14) be connected as an organic whole and revolve round central axis subassembly (3) jointly.

2. The device for preventing the overturning deformation of the numerical control turntable according to the claim 1 is characterized in that the upper part of the support platform (2) is connected with the lower seat (6) through a screw (4), and the upper part of the lower seat (6) is connected with the upper seat (13) through a screw (8).

3. The device for preventing the overturning deformation of the numerical control turntable according to the claim 2 is characterized in that the upper seat (13) is connected with the grinding plate (7) into a whole through a screw (9).

4. The device for preventing the overturning deformation of the numerical control turntable according to the claim 3 is characterized in that the wear-matching plate (7) is made of copper alloy.

5. The device for preventing the overturning deformation of the numerical control turntable according to claim 1, wherein the component for preventing the overturning deformation of the numerical control turntable comprises 6 groups of parts which are uniformly distributed in the circumferential direction.

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