Internal thread grinding machine with numerical control interpolation for grinding grinding wheel

Abstract

The utility model discloses a grinding machine of internal thread of sand wheel numerical control interpolation repair type, including lathe bed, dresser and dresser swing angle device, be equipped with sand wheel swing angle mechanism and be provided with sand wheel main shaft on one side of sand wheel swing angle mechanism on X direction sliding plate, and dresser swing angle device includes swing angle rotating plate and the W direction sliding plate of setting in the swing angle rotating plate outside, set up the outside of W direction sliding plate to dresser to, and dresser can along with X axle interlock numerical control interpolation repair type along W axle, and can make dresser more close work piece to guarantee the consistency of processing size, and can fix the angle of sand wheel repairable when internal thread processing, thereby reduced the moving part of processing, further improved processing efficiency and processing accuracy, the utility model belongs to mechanical processing technical field.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and more specifically relates to a CNC interpolation and repair type internal thread grinding machine. Background Technology

[0002] Machine tools are the mother of all kinds of high-precision and high-efficiency machinery. With the continuous development and changes in market demands, the styles of internal thread parts are becoming more and more numerous, and the precision requirements are becoming higher and higher. Currently, internal thread grinding machines are divided into: 1. The dresser is set on the machine bed, and it is mostly manually adjustable; 2. The dresser is set on the Z-axis worktable, and the dresser is mostly non-adjustable.

[0003] Both of the above structures have their shortcomings. The structure in which the dresser is fixed on the machine bed is complicated to adjust when changing products, requires more spare parts, and the grinding wheel dresser is far away from the workpiece during processing, resulting in poor processing consistency. On the other hand, the structure in which the dresser is placed on the Z-axis worktable and does not swing, requires the grinding wheel to automatically swing during processing, which increases the steps, and the swing angle of the grinding wheel spindle will affect the accuracy.

[0004] Therefore, there is an urgent need for an internal thread grinding machine that can accurately control the swing angle and has a secondary spindle for interpolation and arbitrary modification, in order to ensure the high precision and high stability required when machining various helix angles. Utility Model Content

[0005] The main purpose of this utility model is to provide a CNC interpolation-type internal thread grinding machine that can ensure the consistency of machining dimensions, improve machining efficiency and machining accuracy.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A CNC interpolation-type internal thread grinding machine includes a bed, an X-axis transmission mechanism for driving the X-axis slide, a Z-axis transmission mechanism for driving the Z-axis slide, a dresser, and a dresser tilting device for controlling the tilting angle of the dresser. The bed is provided with an X-axis slide and a Z-axis slide. The Z-axis slide is provided with a workpiece spindle that can rotate along the C-axis. The X-axis slide is provided with a grinding wheel tilting mechanism and a grinding wheel spindle provided on one side of the grinding wheel tilting mechanism. The dresser tilting device includes a tilting rotation plate and a W-axis slide disposed outside the tilting rotation plate. The dresser is mounted on the outside of the W-axis slide.

[0008] According to a first aspect of the present invention, the grinding wheel tilting mechanism includes a guide brake plate, a tilting spindle, and a tilting sliding plate rotatable about the tilting spindle. One end of the tilting sliding plate away from the tilting spindle is slidably connected to the guide brake plate, and the grinding wheel spindle is mounted on the tilting sliding plate.

[0009] According to a first aspect of the present invention, the dressing device is fixed to one side of the workpiece spindle or disposed on the Z-axis slide plate.

[0010] According to a first aspect of the present invention, an outer circular grinding wheel spindle or a coarse grinding wheel spindle is provided at one end of the X-axis sliding plate away from the grinding wheel swing angle mechanism.

[0011] According to a first aspect of the present invention, the trimmer sway device further includes a third slide rail arranged parallel to the W-axis direction and a third drive component whose output end is connected to the W-axis slide plate.

[0012] According to a first aspect of the present invention, the X-axis sliding plate is further provided with a tool setting probe.

[0013] According to a first aspect of the present invention, the X-axis transmission mechanism includes a first slide rail arranged parallel to the X-axis direction and a first drive component whose output end is connected to the X-axis slide plate.

[0014] According to a first aspect of the present invention, the Z-axis transmission mechanism includes a second slide rail arranged parallel to the Z-axis direction and a second drive component whose output end is connected to the Z-axis slide plate.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] This utility model installs the dresser on the dresser swing angle device to swing the helical angle, and installs the grinding wheel spindle on the grinding wheel swing angle mechanism, thereby enabling automatic dressing of the grinding wheel;

[0017] By positioning the dresser on the outside of the W-axis slide, the dresser can perform CNC interpolation and shaping along the W and X axes. This allows the dresser to be closer to the workpiece to ensure consistent machining dimensions. Furthermore, it can fix the dressing angle of the grinding wheel during internal thread machining, thereby reducing the number of moving parts during machining and further improving machining efficiency and accuracy. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Appendix Figure 1 This is a top view of one embodiment of the present invention;

[0020] Appendix Figure 2 This is an overall structural diagram of one embodiment of the present utility model;

[0021] Appendix Figure 3 This is a front view of one embodiment of the present invention;

[0022] Appendix Figure 4 This is a top view of another embodiment of the present invention;

[0023] Appendix Figure 5 This is an overall structural diagram of another embodiment of the present utility model;

[0024] Appendix Figure 6 This is a front view of another embodiment of the present invention. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] 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 technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0030] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0031] See attached document Figure 1 To be continued Figure 6 As shown, a CNC interpolation-type internal thread grinding machine includes a bed 1, an X-axis transmission mechanism, a Z-axis transmission mechanism, a workpiece spindle 2 that can rotate along the C-axis and is mounted on a Z-axis slide plate 12, a grinding wheel tilting mechanism 3 mounted on an X-axis slide plate 11, a grinding wheel spindle 4 mounted on one side of the grinding wheel tilting mechanism 3, a dresser 5, and a dresser tilting device 6 for controlling the tilting angle of the dresser 5.

[0032] The bed 1 of this internal thread grinding machine adopts a flat bed structure, and the X-axis and Z-axis are arranged on the bed 1. The machine tool has four CNC coordinate axes: X / Z / W / C. (See attached diagram) Figure 1 Appendix Figure 2 This includes the C-axis for workpiece rotation, the X-axis for the grinding wheel spindle 10 to move back and forth, the Z-axis for the workpiece spindle 2 to move left and right, and the W-axis for the dresser 5 to move left and right.

[0033] In one embodiment of this utility model, the bed 1 is provided with an X-axis slide plate 11 and a Z-axis slide plate 12. The X-axis slide plate 11 is provided with a tool setting probe 7 for automatic tool setting. Encoders can be installed on the X / Z / W / C axes of the machine tool, the grinding wheel tilting mechanism 3, and the dresser tilting device 6 to perform closed-loop control of the machine tool's coordinate axes. The workpiece spindle 2, the grinding wheel spindle 4, and the dresser spindle of the machine tool are all electric spindles and are cooled by a forced constant temperature cooling machine to ensure stable operation and high precision of each spindle and automatic compensation of grinding wheel dressing amount.

[0034] In one embodiment of this utility model, the dressing device 5 can be mounted on the dressing device 6 to adjust the helical angle, and the grinding wheel spindle 4 can be mounted on the grinding wheel adjustment mechanism 3 to complete the adjustment, thereby enabling automatic dressing of the grinding wheel.

[0035] In one embodiment of the present invention, the X-axis transmission mechanism is used to drive the X-axis slide plate 11. The X-axis transmission mechanism includes a first slide rail 81 arranged parallel to the X-axis direction and a first drive component 82 whose output end is connected to the X-axis slide plate 11. The X-axis slide plate 11 is slidably connected to the first slide rail 81.

[0036] In one embodiment of the present invention, the Z-axis transmission mechanism is used to drive the Z-axis slide plate 12. The Z-axis transmission mechanism includes a second slide rail 91 arranged parallel to the Z-axis direction and a second drive component 92 whose output end is connected to the Z-axis slide plate 12. The Z-axis slide plate 12 is slidably connected to the second slide rail 91.

[0037] In one embodiment of this utility model, the trimmer tilting device 6 includes a tilting plate 61, a W-direction sliding plate 62 disposed outside the tilting plate 61, a third slide rail disposed parallel to the W-axis direction, and a third drive component whose output end is connected to the W-direction sliding plate 62. By configuring the trimmer tilting device 6 and setting the trimmer tilting device 6 as a solid rotating shaft, high rotational accuracy can be guaranteed, the overall rigidity of the device can be better, the processing and assembly processes of the parts can be simpler, and the tool setting operation can be more convenient and accurate.

[0038] In one embodiment of this utility model, the dresser 5 is installed on the outside of the W-axis sliding plate 62, the grinding wheel spindle 4 is set on the swing sliding plate 33, the dresser swing angle device 6 controls the swing angle of the dresser 5, and the grinding wheel swing angle mechanism 3 controls the swing angle of the grinding wheel spindle 4. Thus, the dresser 5 can perform CNC interpolation and shaping along the W-axis and X-axis, which can complete the shaping of any shape and reduce the number of rotating swing parts, thereby effectively improving the processing efficiency and ensuring the processing accuracy.

[0039] In one embodiment of the present invention, the grinding wheel swing angle mechanism 3 includes a guide brake plate 31, a spindle 32, and a swing sliding plate 33 that can rotate around the spindle 32. The end of the swing sliding plate 33 away from the spindle 32 is slidably connected to the guide brake plate 31.

[0040] In one embodiment of this utility model, the dresser swing angle device 6 is fixed to one side of the workpiece spindle 2 or set on the Z-axis slide plate 12, which allows the dresser 5 to still achieve a lightweight and simple design despite the increase in swing angle and W-axis, further reducing the moment of inertia. Furthermore, by mounting the dresser 5 on the Z-axis slide plate 12 or one side of the workpiece spindle 2, the dresser 5 can be closer to the workpiece, compensating for the errors caused by grinding wheel wear and bed thermal deformation, and ensuring the consistency of machining dimensions.

[0041] In one embodiment of this utility model, refer to the appendix. Figure 1 To be continued Figure 3 An external cylindrical grinding wheel spindle is provided at the end of the X-axis slide plate 11 away from the grinding wheel tilting mechanism 3. The external cylindrical grinding wheel spindle can be used to grind features such as the outer diameter and end face of the part; see attached diagram. Figure 4 To be continued Figure 6 The external cylindrical grinding wheel spindle can be replaced with a rough grinding (rough milling) grinding wheel spindle, which can perform multi-spindle rough and fine grinding of internal threads, and can multiply the efficiency when machining a single thread.

[0042] The swing angle of the grinding wheel dresser of this internal thread grinding machine is controlled by a solid rotary shaft, and a secondary spindle W-axis is configured to perform CNC interpolation dressing of the grinding wheel. This configuration not only allows the dresser 5 to be close to the workpiece to ensure the consistency of the machining dimensions, but also fixes the angle of the grinding wheel dresser during internal thread machining, reducing the number of moving parts during machining, improving machining efficiency, and improving machining accuracy.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A CNC interpolation-type internal thread grinding machine with a grinding wheel capable of repairing and patching, characterized in that, include: The bed (1) is provided with an X-axis sliding plate (11) and a Z-axis sliding plate (12); An X-axis transmission mechanism for driving the X-axis slide plate (11) and a Z-axis transmission mechanism for driving the Z-axis slide plate (12); The Z-axis slide plate (12) is provided with a workpiece spindle (2) that can rotate along the C-axis, and the X-axis slide plate (11) is provided with a grinding wheel tilting mechanism (3) and a grinding wheel spindle (4) provided on one side of the grinding wheel tilting mechanism (3). The trimmer (5) and the trimmer angle device (6) for controlling the angle of the trimmer (5) include an angle rotating plate (61) and a W-direction sliding plate (62) disposed outside the angle rotating plate (61), and the trimmer (5) is mounted on the outside of the W-direction sliding plate (62).

2. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The grinding wheel swing angle mechanism (3) includes a guide brake plate (31), a spindle (32), and a swing sliding plate (33) that can rotate around the spindle (32). The end of the swing sliding plate (33) away from the spindle (32) is slidably connected to the guide brake plate (31), and the grinding wheel spindle (4) is disposed on the swing sliding plate (33).

3. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The trimmer sway device (6) is fixed to one side of the workpiece spindle (2) or set on the Z-axis slide plate (12).

4. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The X-axis sliding plate (11) is provided with an outer circular grinding wheel spindle or a coarse grinding wheel spindle at one end away from the grinding wheel swing mechanism (3).

5. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The trimmer sway device (6) also includes a third slide rail arranged parallel to the W-axis direction and a third drive component whose output end is connected to the W-axis slide plate (62).

6. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The X-axis sliding plate (11) is also equipped with a tool setting probe (7).

7. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The X-axis transmission mechanism includes a first slide rail (81) arranged parallel to the X-axis direction and a first drive component (82) whose output end is connected to the X-axis slide plate (11).

8. The CNC interpolation-type internal thread grinding machine according to claim 1, characterized in that: The Z-axis transmission mechanism includes a second slide rail (91) arranged parallel to the Z-axis direction and a second drive component (92) whose output end is connected to the Z-axis slide plate (12).

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