Vertical composite grinding machine with automatic normalizing device

Abstract

This utility model discloses a vertical composite grinding machine tool with an automatic normal dressing device, including a bed, a workpiece spindle, a crossbeam, a dresser assembly, and a grinding section. The dresser assembly includes an automatic normal dressing device and an internal and external cylindrical grinding dresser mounted on the X-axis slide. The grinding section includes a tooth surface grinding assembly and an internal and external cylindrical grinding assembly. The machine tool adopts a vertical gantry structure. A workpiece spindle that can rotate around the C-axis is mounted on the upper end face of the X-axis slide. It works in conjunction with the tooth surface grinding assembly and the internal and external cylindrical grinding assembly to perform grinding on the workpiece. The automatic normal dressing device drives the dresser body to dress the grinding wheel through a rotating device. When dressing the grinding wheel, the rotation axis of the dressing wheel is always perpendicular to the normal of the dressing point on the dressing contour. Automatic normal dressing is achieved through CNC programming or input curves to achieve higher dressing contour accuracy. This utility model belongs to the field of machine tool processing.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool processing, and more specifically relates to a vertical composite grinding machine tool with an automatic normal dressing device. Background Technology

[0002] Currently, the dressing of grinding wheel arcs is generally carried out using grinding wheel dressing devices equipped with forming rollers. However, this method has the following limitations: 1. The accuracy of the forming roller will determine the accuracy of the grinding wheel arc or the tooth profile of the workpiece. The profile accuracy of the dressing wheel will not be higher than that of the forming roller; 2. The cost of customizing forming rollers is high; 3. Forming rollers are only suitable for fixed profiles. Modifying the groove shape requires replacing the roller, resulting in low flexibility; 4. Forming dressing involves surface contact, resulting in large dressing forces, which can easily lead to excessive wear of the grinding wheel bond or abrasive grain shedding, potentially reducing the grinding wheel life by 20% to 30%. Utility Model Content

[0003] The main purpose of this utility model is to provide a vertical composite grinding machine tool with an automatic normal dressing device, which can not only dress multi-angle combined arcs, but also achieve higher dressing accuracy.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A vertical composite grinding machine tool with an automatic normal dressing device includes a bed, a workpiece spindle that can rotate along the C-axis and is perpendicular to the upper surface of the X-axis slide plate, a crossbeam perpendicular to the bed, a dresser assembly, and a grinding section mounted on the Y-axis slide plate. The bed has an X-axis slide plate, and the crossbeam has a Y-axis slide plate on its side. The dresser assembly includes an automatic normal dressing device and an internal and external cylindrical grinding dresser mounted on the X-axis slide plate. The automatic normal dressing device includes a rotating device mounted on the upper surface of the X-axis slide plate and a dresser body mounted on the rotating device. The grinding section includes a tooth surface grinding assembly mounted on the Z-axis slide plate and an internal and external cylindrical grinding assembly mounted on the W-axis slide plate.

[0006] According to a first aspect of the present invention, the dressing body includes a drive motor, a base and bearing seats respectively provided at both ends of the base, a connecting shaft is provided between the two bearing seats, a first dressing wheel is provided on the connecting shaft, and a rotating device is provided on the Z-axis sliding plate that can drive the tooth surface grinding assembly to rotate around the A-axis.

[0007] According to a first aspect of the present invention, the main body of the dressing tool is a dressing wheel or a shaping diamond pen.

[0008] According to a first aspect of the present invention, the inner and outer cylindrical grinding dressing tool is a dressing wheel or a shaping diamond pen.

[0009] According to a first aspect of the present invention, a drive mechanism is further included, the drive mechanism comprising an X-direction transmission mechanism disposed between the X-direction slide plate and the bed and a Y-direction transmission mechanism disposed between the Y-direction slide plate and the crossbeam.

[0010] According to a first aspect of the present invention, the grinding part further includes a Z-axis transmission mechanism and a W-axis transmission mechanism for driving the Z-axis slide plate and the W-axis slide plate to reciprocate.

[0011] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0012] This utility model adopts a vertical gantry structure, with a workpiece spindle that can rotate around the C-axis set on the upper end face of the X-axis slide plate. It works in conjunction with the tooth surface grinding assembly and the internal and external cylindrical grinding assembly to grind the workpiece. The automatic normal dressing device drives the dressing wheel to rotate through the rotating device. When dressing the grinding wheel, the rotation axis of the dressing wheel is always perpendicular to the normal of the dressing point on the dressing contour. Automatic normal dressing is achieved through CNC programming or input curves to achieve higher dressing contour accuracy. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Appendix Figure 1 This is an overall structural diagram of one embodiment of the present utility model;

[0015] Appendix Figure 2 This is a side view of one embodiment of the present invention;

[0016] Appendix Figure 3 Example 1 of a cylindrical grinding assembly and an internal and external cylindrical grinding dresser according to an embodiment of the present invention;

[0017] Appendix Figure 4 Example 2 of the cylindrical grinding assembly and internal / external cylindrical grinding dresser of this utility model;

[0018] Appendix Figure 5 Example 3 of the cylindrical grinding assembly and internal / external cylindrical grinding dresser of this utility model;

[0019] Appendix Figure 6 This is a structural diagram of an automatic normal adjustment device according to an embodiment of the present invention;

[0020] Appendix Figure 7 This is a schematic diagram illustrating the relative positions of the first dressing wheel and the grinding wheel during dressing according to an embodiment of the present invention. Figure 1 ;

[0021] Appendix Figure 8This is a schematic diagram illustrating the relative positions of the first dressing wheel and the grinding wheel during dressing according to an embodiment of the present invention. Figure 2 ;

[0022] Appendix Figure 9 This is a schematic diagram illustrating the relative positions of the first dressing wheel and the grinding wheel during dressing according to an embodiment of the present invention. Figure 3 . Detailed Implementation

[0023] 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.

[0024] 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 relationships based on the directional or positional relationships 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0029] See attached document Figure 1 To be continued Figure 9 As shown, a vertical compound grinding machine tool with an automatic normal dressing device includes a bed 1, a crossbeam 7 arranged perpendicular to the bed 1, a workpiece spindle 2 that can rotate around the C-axis, a dresser assembly 3, a grinding section 4, and a drive mechanism. The bed 1 is provided with an X-axis lead screw guide and double columns. The double columns are arranged on the bed 1 and support the crossbeam 7. The crossbeam 7 is provided with a Y-axis lead screw guide, and a Y-axis slide plate 71 is placed on the Y-axis lead screw guide.

[0030] In one embodiment of this utility model, the bed 1 is provided with an X-axis slide plate 11, the workpiece spindle 2 is set perpendicular to the upper end face of the X-axis slide plate 11, and the side of the crossbeam 7 is provided with a Y-axis slide plate 71. This composite machining grinding machine is specially designed for grinding needle tooth shells. The machine tool adopts a vertical gantry structure. The workpiece spindle 2 is vertically installed to keep the workpiece upright and places the workpiece spindle 2 on the moving linear axis. Since the structure of this machine tool has good rigidity, the vertically clamped workpiece only requires sufficient clamping force to resist the cutting force, and gravity is beneficial to the machining process rather than hindering the machining, thus more effectively ensuring the machining accuracy of the parts.

[0031] In one embodiment of the present invention, the dressing assembly 3 includes an automatic normal dressing device and an inner and outer cylindrical grinding dressing device 32 disposed on the X-axis slide plate 11. The automatic normal dressing device includes a rotating device 311 fixedly connected to the upper end face of the X-axis slide plate 11 and a mounting plate connected to the top of the rotating device 311. The mounting plate is provided with a dressing body 312. The rotating device 311 rotates to make the dressing body 312 achieve the effect of angle dressing.

[0032] In one embodiment of this utility model, the dressing body 312 can be a dressing wheel or a shaping diamond pen, and the inner and outer cylindrical grinding dressing device 32 can be a dressing wheel or a shaping diamond pen, as shown in the attached drawing. Figure 1 To be continued Figure 5 .

[0033] In one embodiment of the present invention, the trimmer body 312 includes a drive motor, a base 314 connected to a mounting plate, and bearing seats 315 respectively provided at both ends of the base 314. A connecting shaft 316 is provided between the two bearing seats 315. The output end of the drive motor is connected to one end of the connecting shaft 316. A first trimming wheel 317 is provided on the connecting shaft 316.

[0034] In one embodiment of this utility model, the rotating device 311 rotates to drive the dressing body 312 to achieve automatic normal dressing. The base 314 can be adjusted back and forth along the radius of the rotation circle. The bearing seats 315 at both ends of the base 314 can be adjusted back and forth along the tangent of the rotation circle while ensuring the concentricity of the two bearing seats 315. The bearing seats 315 at both ends support the connecting shaft 316. The first dressing wheel 317 is installed in the middle of the connecting shaft 316. The structure supported by both ends has good rigidity and can leave sufficient dressing space.

[0035] In one embodiment of this utility model, the first dressing wheel 317 is fixedly connected to the connecting shaft 316. The first dressing wheel 317 is disposed in the middle of the connecting shaft 316, thereby improving the rigidity through the structure supported at both ends.

[0036] In one embodiment of this utility model, the relative position of the first dressing wheel 317 and the grinding wheel during dressing can be referred to the attached figure. Figure 7 To be continued Figure 9 During the process of dressing the grinding wheel arc, the rotating device 311 will... Figure 7 Appendix Figure 8 Appendix Figure 9 Or attached Figure 9 Appendix Figure 8 Appendix Figure 7 The sequence of directions is rotated to achieve normal adjustment.

[0037] In one embodiment of the present invention, the grinding part 4 is disposed on the Y-axis slide plate 71. The grinding part 4 includes a Z-axis slide plate 43, a W-axis slide plate, a tooth surface grinding assembly 41 that can reciprocate along the Z-axis direction and the W-axis direction respectively, an inner and outer cylindrical grinding assembly 42, a Z-axis transmission mechanism and a W-axis transmission mechanism respectively used to drive the Z-axis slide plate 43 and the W-axis slide plate to reciprocate.

[0038] In one embodiment of this utility model, refer to the appendix. Figure 1 When there is no rotating device on the Z-axis slide plate to drive the tooth surface grinding assembly 41 to rotate around the A-axis, straight tooth workpieces are processed. When there is a rotating device on the Z-axis slide plate 43, both straight tooth workpieces and helical tooth workpieces can be processed.

[0039] In one embodiment of this utility model, the Z-axis transmission mechanism includes a Z-axis slide rail arranged parallel to the Z-axis direction and a third motor connected to the Z-axis slide plate 43. The lower end face of the Z-axis slide plate 43 is slidably connected to the two Z-axis slide rails respectively. The W-axis transmission mechanism includes a W-axis slide rail arranged parallel to the W-axis direction and a fourth motor connected to the W-axis slide plate. The lower end face of the W-axis slide plate is slidably connected to the two W-axis slide rails respectively.

[0040] In one embodiment of the present invention, the drive mechanism includes an X-direction transmission mechanism disposed between the X-direction slide plate 11 and the bed 1 and a Y-direction transmission mechanism disposed between the Y-direction slide plate 71 and the crossbeam 7. The X-direction transmission mechanism includes a first slide rail disposed parallel to the X-axis direction and a first motor connected to the X-direction slide plate 11. The lower end face of the X-direction slide plate 11 is slidably connected to the two first slide rails respectively.

[0041] In one embodiment of this utility model, the Y-direction transmission mechanism includes a second slide rail arranged parallel to the Y-axis and a second motor connected to the Y-direction slide plate 71. The lower end face of the Y-direction slide plate 71 is slidably connected to the two second slide rails respectively.

[0042] This vertical composite grinding machine can grind the inner hole (outer circle), end face, and internal teeth of a part in a single setup, ensuring high precision. Compared to traditional forming roller dressing, this vertical composite grinding machine, through its CNC system and precision mechanical structure, can not only adjust the dressing angle of the grinding wheel to meet various tilt angle requirements during grinding wheel dressing, but also perform dressing while rotating the angle through CNC interpolation, thereby achieving higher dressing accuracy.

[0043] In one embodiment of this utility model, please refer to the appendix. Figure 1 To be continued Figure 5 As shown, the internal and external cylindrical grinding components 42 and the internal and external cylindrical grinding dresser 32 of the machine tool can be configured and replaced according to the processing object and processing requirements. The automatic normal dressing device can achieve adjustable dressing angle through the rotating device 311 and the dresser body 312 to adapt to different workpiece tilt angle requirements. In addition, the automatic normal dressing device can quickly switch the processing contour through the CNC program. In contrast, the previous forming rollers required manual replacement. The automatic normal dressing device can accurately dress and avoid excessive wear of the grinding wheel in some areas, extending its life by 20% to 30%. The automatic normal dressing device can reduce stress concentration at the edge of the grinding wheel through progressive feed and reduce edge chipping. The dressing process of the automatic normal dressing device is point contact, which can reduce heat generation and thus reduce the impact of temperature drift.

[0044] 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 vertical composite grinding machine tool with an automatic normal dressing device, characterized in that, include: Bed (1), wherein the bed (1) is provided with an X-axis sliding plate (11); A workpiece spindle (2) capable of C-axis rotation is provided perpendicular to the upper end face of the X-axis slide plate (11), and a crossbeam (7) is provided perpendicular to the bed (1). A Y-axis slide plate (71) is provided on the side of the crossbeam (7). Dresser assembly (3), the dresser assembly (3) includes an automatic normal dressing device and an internal and external cylindrical grinding dresser (32) disposed on the X-axis slide plate (11). The automatic normal dressing device includes a rotating device (311) disposed on the upper end face of the X-axis slide plate (11) and a dresser body (312) disposed on the rotating device (311). The grinding part (4) is provided on the Y-axis slide plate (71), and the grinding part (4) includes a tooth surface grinding assembly (41) provided on the Z-axis slide plate (43) and an inner and outer cylindrical grinding assembly (42) provided on the W-axis slide plate.

2. The vertical composite grinding machine tool with an automatic normal dressing device according to claim 1, characterized in that: The main body (312) of the dresser includes a drive motor, a base (314) and bearing seats (315) respectively provided at both ends of the base (314). A connecting shaft (316) is provided between the two bearing seats (315). A first dressing wheel (317) is provided on the connecting shaft (316). A rotating device is provided on the Z-axis slide plate (43) that can drive the tooth surface grinding assembly (41) to rotate around the A-axis.

3. The vertical composite grinding machine tool with an automatic normal dressing device according to claim 1, characterized in that: The main body (312) of the dressing tool is a dressing wheel or a shaping diamond pen.

4. The vertical composite grinding machine tool with an automatic normal dressing device according to claim 1, characterized in that: The inner and outer cylindrical grinding dressing tool (32) is a dressing wheel or a shaping diamond pen.

5. The vertical composite grinding machine tool with an automatic normal dressing device according to claim 1, characterized in that: It also includes a drive mechanism, which includes an X-axis transmission mechanism disposed between the X-axis slide plate (11) and the bed (1) and a Y-axis transmission mechanism disposed between the Y-axis slide plate (71) and the crossbeam (7).

6. The vertical composite grinding machine tool with an automatic normal dressing device according to claim 1, characterized in that: The grinding section (4) further includes a Z-axis transmission mechanism and a W-axis transmission mechanism for driving the Z-axis slide plate (43) and the W-axis slide plate to reciprocate.

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