A direct-drive CNC indexing plate assembly mounting structure and a CNC grinding machine using it

Abstract

This utility model provides a direct-drive CNC indexing plate assembly mounting structure and a CNC machine tool using the same, including a Y-axis slide, a direct-drive motor assembly mounted on the Y-axis slide, and an indexing plate driven and connected to the direct-drive motor assembly; the direct-drive motor assembly includes a drive assembly, a bearing assembly connected to the upper end of the drive assembly, and a connecting flange assembly connected to the upper end face of the bearing assembly. The inner ring of the bearing assembly is synchronously rotated and connected to the spindle of the drive assembly, the bottom of the connecting flange assembly is connected to the inner ring, and the top is connected to the indexing plate; this utility model uses a direct-drive motor assembly and reduces the axial distance between the drive plane of the direct-drive motor assembly and the rotation plane of the indexing plate, shortens the distance to the sway center, and reduces the lever arm, thereby reducing rotational sway, resulting in more stable rotation and higher precision.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a direct-drive CNC indexing plate assembly mounting structure and a CNC grinding machine using the same. Background Technology

[0002] A five-axis CNC grinding machine is a machine tool that uses grinding wheels to grind the surface of a workpiece. Most grinding machines use high-speed rotating grinding wheels for grinding. Five-axis linkage means that there are five coordinate axes (X, Y, Z three linear coordinates and A, C two rotary coordinates) on one machine tool.

[0003] Chinese patent CN220051108U discloses a grinding machine for machining the inner ring of a tapered roller bearing, comprising: a machine tool having a working surface; an X-axis assembly including a workpiece spindle, the workpiece spindle being arranged parallel to the Z-axis of the working surface; a Z-axis assembly including a large grinding wheel spindle, the projection of the large grinding wheel spindle on the YZ plane forming an acute angle with the negative Z-axis of the working surface; and a W-axis assembly including a small grinding wheel spindle, the projection of the small grinding wheel spindle on the YZ plane being parallel to the Z-axis of the working surface, wherein the workpiece spindle, the large grinding wheel spindle, and the small grinding wheel spindle are configured to rotate the workpiece, the large grinding wheel spindle, and the small grinding wheel spindle.

[0004] However, this technical solution has the following shortcomings: the flange on the spindle slide is installed at a low position, far from the swing center, and has a large lever arm, resulting in poor stability and low precision during the rotation of the rotating shaft assembly; moreover, the equipment has low connection strength and is prone to deformation under load. Summary of the Invention

[0005] This utility model addresses the shortcomings of existing technologies by providing a direct-drive CNC indexing plate assembly mounting structure. The direct-drive CNC indexing plate assembly mounting structure uses a direct-drive motor assembly and is designed to reduce the axial distance between the drive plane of the direct-drive motor assembly and the rotation plane of the indexing plate, thereby shortening the distance from the sway center. The lever arm is small, resulting in small rotational sway, which in turn makes the rotation more stable and more accurate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A direct-drive CNC indexing plate assembly mounting structure includes a Y-axis slide, a direct-drive motor assembly mounted on the Y-axis slide, and an indexing plate driven and connected to the direct-drive motor assembly; the Y-axis slide is configured as a frame-shaped structure with height, and the direct-drive motor assembly includes a drive assembly and a bearing assembly connected to the upper end of the drive assembly, the drive assembly being housed within the frame-shaped cavity of the Y-axis slide.

[0008] Preferably, the bearing assembly is fitted onto the upper end face of the Y-axis slide or housed within the frame cavity of the Y-axis slide.

[0009] Preferably, the direct drive motor assembly further includes a connecting flange assembly connected to the upper end face of the bearing assembly, wherein the inner ring of the bearing assembly is synchronously rotatably connected to the main shaft of the drive assembly, the bottom of the connecting flange assembly is connected to the inner ring, and the top is connected to the indexing plate.

[0010] Preferably, the outer ring of the bearing assembly is mounted on the top surface of the Y-axis slide, the outer diameter of the outer ring is adapted to the size of the Y-axis slide, and the lower end face of the outer ring supports the upper end face of the Y-axis slide.

[0011] Preferably, the inner wall of the Y-axis slide adjacent to the upper end face is the assembly surface of the drive assembly and the Y-axis slide. This assembly surface is configured as a limiting step A of at least one level, and the drive assembly is matched and limitedly mounted on the limiting step A.

[0012] Preferably, the limiting step A is provided with two levels.

[0013] Preferably, the bottom of the indexing plate is assembled with the top of the connecting flange assembly, and the assembly surface of the two is set as at least one limiting step B, and the connecting flange assembly is matched and limitedly installed on the limiting step B.

[0014] Preferably, the limiting step B has two levels.

[0015] Preferably, the system further includes a rotating shaft assembly mounted on the indexing plate.

[0016] This utility model also provides a CNC grinding machine, including: a grinding machine base, and a direct drive CNC indexing plate assembly mounting structure as described above, the direct drive CNC indexing plate assembly mounting structure being slidably mounted on the grinding machine base.

[0017] Preferably, the grinding machine base is provided with a Y-axis slide rail, and the Y-axis slide table is slidably mounted on the Y-axis slide rail.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) The direct drive CNC indexing plate assembly installation structure of this utility model adopts a direct drive motor assembly and is designed to reduce the axial distance between the drive plane of the direct drive motor assembly and the rotation plane of the indexing plate, shorten the distance to the center of the sway, and reduce the lever arm, thereby reducing the rotational sway and making the rotation more stable and more accurate.

[0020] (2) By setting the slide table as a frame structure with increased height and thickness, this utility model increases the connection strength of the equipment, improves the bending resistance and strength, reduces deformation under weight, and enhances stability compared to the traditional single-plate structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the CNC machine tool in this utility model;

[0022] Figure 2 This is a schematic diagram of the mounting structure of the direct-drive CNC indexing plate assembly in this utility model;

[0023] Figure 3 for Figure 2 A partial sectional view;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Example 1

[0028] like Figures 2-4As shown, a direct-drive CNC indexing plate assembly mounting structure includes a Y-axis slide 1, a direct-drive motor assembly 2 mounted on the Y-axis slide 1, and an indexing plate 4 driven and connected to the direct-drive motor assembly 2. The direct-drive motor assembly 2 includes a drive assembly 21, a bearing assembly 22 connected to the upper end of the drive assembly 21, and a connecting flange assembly 23 connected to the upper end face of the bearing assembly 22. The inner ring 221 of the bearing assembly 22 is synchronously rotatably connected to the spindle of the drive assembly 21. The bottom of the connecting flange assembly 23 is connected to the inner ring 221, and the top is connected to the indexing plate 4.

[0029] In this embodiment, the direct drive CNC indexing plate assembly mounting structure adopts a direct drive motor assembly, and the axial distance between the drive plane of the direct drive motor assembly 2 and the rotation plane of the indexing plate 4 is reduced, the distance from the swing center is shortened, the lever arm is small, and thus the rotation swing is small, resulting in more stable rotation and higher precision.

[0030] Preferably, the outer ring 222 of the bearing assembly 22 is mounted on the top surface of the Y-axis slide 1, the outer diameter of the outer ring 222 is adapted to the size of the Y-axis slide 1, and the lower end face of the outer ring 222 supports the upper end face 11 of the Y-axis slide 1.

[0031] In this embodiment, the outer diameter of the outer ring 222 of the bearing assembly 22 is the same as that of the Y-axis slide 1, and the lower end face of the outer ring 222 supports the upper end face 11 of the Y-axis slide 1, thereby providing more reliable and stable support for rotation.

[0032] Preferably, the system also includes a rotating shaft assembly 5, which is mounted on the indexing plate 4.

[0033] Preferably, the Y-axis slide 1 is configured as a frame-shaped structure with height. The drive assembly 21 is housed within the frame cavity 10 of the Y-axis slide 1. The bearing assembly 22 is fitted onto the upper end face 11 of the Y-axis slide 1 or housed within the frame cavity 10 of the Y-axis slide 1. The mounting structure of the Y-axis slide 1 and the direct drive motor assembly 2 can be changed according to user requirements, choosing to place the direct drive motor assembly 2 completely inside the Y-axis slide 1 or to expose part of the structure above the Y-axis slide 1.

[0034] In this embodiment, the Y-axis slide 1 is vertically raised and a bearing assembly 11 is installed on its upper end face 11, thereby changing the installation position of the turntable. That is, the matching slide is raised to shorten the distance from the swing center and the lever arm is smaller, thus making the rotation more stable and more accurate.

[0035] In addition, by setting the slide table as a frame structure with increased height and thickness, compared with the traditional single-plate structure, the connection strength of the equipment is increased, the bending resistance and strength are improved, the deformation under weight is small, and the stability is strong.

[0036] Example 2

[0037] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0038] As a preferred option, such as Figure 4 As shown, the inner wall of the upper end face 11 of the Y-axis slide 1 is the assembly surface of the drive assembly 21 and the Y-axis slide 1. The assembly surface is set as a limiting step A12 of at least one level, and the drive assembly 21 is matched and limitedly installed on the limiting step A12.

[0039] Preferably, the limiting step A12 is provided with two levels.

[0040] Preferably, the bottom of the indexing plate 4 is assembled with the top of the connecting flange assembly 23, and the assembly surface of the two is set as at least one limiting step B41, and the connecting flange assembly 23 is matched and limitedly installed on the limiting step B41.

[0041] Preferably, the limiting step B41 is provided with two levels.

[0042] Example 3

[0043] A type of CNC grinding machine, such as Figure 1 As shown, it includes: a rotary axis assembly 5 and a grinding machine base 6, and also includes the direct drive CNC indexing plate assembly mounting structure described in the above embodiment. The direct drive CNC indexing plate assembly mounting structure is slidably mounted on the grinding machine base 6, and the rotary axis assembly 5 is mounted on the indexing plate 4.

[0044] Preferably, the grinding machine base 6 is provided with a Y-axis slide rail 7, and the Y-axis slide table 1 is slidably mounted on the Y-axis slide rail 7.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mounting structure for a direct-drive CNC indexing plate assembly, characterized in that, It includes a Y-axis slide, a direct-drive motor assembly mounted on the Y-axis slide, and an indexing plate driven and connected to the direct-drive motor assembly; the Y-axis slide is configured as a frame structure with height. The direct drive motor assembly includes a drive assembly and a bearing assembly connected to the upper end of the drive assembly. The drive assembly is housed within the frame cavity of the Y-axis slide.

2. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 1, characterized in that, The bearing assembly is fitted onto the upper end face of the Y-axis slide or housed within the frame cavity of the Y-axis slide.

3. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 2, characterized in that, The direct drive motor assembly also includes: A connecting flange assembly is connected to the upper end face of the bearing assembly. The inner ring of the bearing assembly is synchronously rotatably connected to the main shaft of the drive assembly. The bottom of the connecting flange assembly is connected to the inner ring, and the top is connected to the indexing plate.

4. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 1, characterized in that, The outer ring of the bearing assembly is mounted on the top surface of the Y-axis slide. The outer diameter of the outer ring is adapted to the size of the Y-axis slide, and the lower end face of the outer ring supports the upper end face of the Y-axis slide.

5. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 4, characterized in that, The inner wall of the Y-axis slide close to the upper end face is the assembly surface of the drive assembly and the Y-axis slide. The assembly surface is set as at least one limiting step A, and the drive assembly is matched and limitedly mounted on the limiting step A.

6. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 5, characterized in that, The limiting step A has two levels.

7. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 3, characterized in that, The bottom of the indexing plate is assembled with the top of the connecting flange assembly, and the assembly surface of the two is set as at least one level of limiting step B, and the connecting flange assembly is matched and limited on the limiting step B.

8. The mounting structure of a direct-drive CNC indexing plate assembly according to claim 7, characterized in that, The limiting step B has two levels.

9. A CNC grinding machine, comprising: The rotary axis assembly and the grinding machine base are characterized in that they further include a direct-drive CNC indexing plate assembly mounting structure as described in any one of claims 1-8, wherein the direct-drive CNC indexing plate assembly mounting structure is slidably mounted on the grinding machine base, and the rotary axis assembly is mounted on the indexing plate.

10. A CNC grinding machine according to claim 9, characterized in that, The grinding machine base is provided with a Y-axis slide rail, and the Y-axis slide table is slidably mounted on the Y-axis slide rail.

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