Grinding machine with ultrasonic processing function

Abstract

The present invention discloses a grinding machine with an ultrasonic machining function, including a machine tool (1), a Z-axis transfer assembly (2) mounted on the machine tool (1) and extending along the Z-axis direction, an X-axis transfer assembly (3) mounted on the machine tool (1) and extending along the X-axis direction, the Z-axis direction and the X-axis direction being perpendicular to each other, a headstock assembly (4) mounted on the Z-axis transfer assembly (2) and used to clamp a workpiece, an ultrasonic generator (5) mounted on the Z-axis transfer assembly (2) and disposed on one side of the headstock assembly (4) corresponding to the headstock assembly (4), with an operating end acting on the workpiece, and a polishing assembly mounted on the X-axis transfer assembly (3) and disposed on the other side of the headstock assembly (4) corresponding to the ultrasonic generator (5), with an operating end acting on the workpiece, the polishing assembly being driven to reciprocate by the X-axis transfer assembly (3) and performing polishing processing on various positions of the workpiece.

Description

[Technical Field]

[0001] The present invention relates to the technical field of grinding machines, and more particularly to a grinding machine with ultrasonic machining capabilities. [Background technology]

[0002] A grinding machine is a machine tool that uses a grinding wheel to grind the surface of a workpiece. Using a grinding machine, excess parts of the workpiece can be ground away to obtain the required shape, size, and processed surface. Grinding can improve the surface accuracy of the workpiece. Grinding is generally necessary, especially for workpieces with high requirements for surface quality.

[0003] To accommodate a variety of grinding operations, our company has previously applied for a patent for a multi-purpose grinding machine (application number 2023105945961), disclosing a multi-purpose grinding machine with three functions: cylindrical grinding, internal grinding, and thread grinding. This multi-purpose grinding machine allows for flexible adjustment of the positions of the headstock, cylindrical grinding device, internal grinding device, and thread grinding device, allowing for flexible switching between cylindrical grinding, internal grinding, and thread grinding operations. Various types of grinding operations can be performed on the same workpiece with a single clamping operation, without the need to switch machine tools. This not only effectively improves the processing accuracy and quality of the workpiece, but also significantly improves workpiece processing efficiency.

[0004] In actual use, when a cylindrical grinding machine, an internal grinding machine, or a thread grinding machine is used to grind a workpiece, a large grinding force is generated. If the grinding force is too large, the grinding efficiency will decrease and the surface roughness of the workpiece to be ground will also be affected. Therefore, the applicant believes that by combining ultrasonic technology to assist the grinding of the workpiece, the processing efficiency will be improved and better surface roughness will be obtained. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the technical problem that this invention aims to solve is to solve the problems of the prior art, that is, low processing efficiency and poor surface roughness due to excessive grinding force, and to provide a grinding machine with an ultrasonic processing function that uses an ultrasonic generator to apply ultrasonic waves to the workpiece when polishing the workpiece, thereby improving processing efficiency and effectively reducing the grinding force generated during grinding, thereby achieving better surface roughness. [Means for solving the problem]

[0006] In order to solve the above technical problems, the present invention provides: Machine tools and a Z-axis transfer assembly provided in the machine tool and extending along a Z-axis direction; an X-axis transfer assembly provided in the machine tool, extending along an X-axis direction, the Z-axis direction and the X-axis direction being perpendicular to each other; a headstock assembly provided on the Z-axis transfer assembly and used to clamp a workpiece; an ultrasonic generator provided on the Z-axis transfer assembly and on one side of the headstock assembly corresponding to the headstock assembly, the ultrasonic generator having an operating end that acts on a workpiece to be machined; and a polishing assembly that is provided on the X-axis transfer assembly, is provided on the other side of the headstock assembly corresponding to the ultrasonic generator, has an operating end that acts on the workpiece to be processed, and is driven to move back and forth by the X-axis transfer assembly to polish various positions of the workpiece.

[0007] In one embodiment of the present invention, the headstock assembly comprises: The first table and a clamping mechanism that is provided on the first table, is used to clamp the workpiece, and is rotationally driven by the first table.

[0008] In one embodiment of the present invention, the Z-axis transfer assembly is further provided with an ultrasonic generator slide base, the ultrasonic generator is provided on the ultrasonic generator slide base, and the ultrasonic generator slides towards or away from the headstock assembly on the ultrasonic generator slide base.

[0009] In one embodiment of the present invention, the grinding assembly includes an internal grinding device and a thread grinding device, and the X-axis transfer assembly moves the internal grinding device and the thread grinding device to act on the workpiece to be machined, respectively.

[0010] In one embodiment of the present invention, the internal grinding device comprises: The second table and an internal polishing body that is provided on the second table, is rotationally driven by the second table, and includes an internal polishing head and an internal polishing drive source.

[0011] In one embodiment of the present invention, the thread grinding device comprises: A mounting frame and a Y-axis transfer assembly provided on the mounting frame and extending along a Y-axis direction, with both the X-axis direction and the Z-axis direction being perpendicular to the Y-axis direction; a third table provided in the Y-axis transfer assembly and moved along the Y-axis by the Y-axis transfer assembly; a screw grinding body that is provided on the third table, is rotationally driven by the third table, and includes a screw grinding head and a screw grinding drive source.

[0012] In one embodiment of the present invention, the thread grinding machine further includes a measuring device mounted on the mounting frame, the measuring device facing the workpiece to be machined.

[0013] In one embodiment of the present invention, the X-axis transfer assembly, the Z-axis transfer assembly, and the Y-axis transfer assembly all include a linear power source and a stage driven by the linear power source, and the linear power source drives the stage to move back and forth.

[0014] In one embodiment of the present invention, the X-axis transfer assembly, the Z-axis transfer assembly, and the Y-axis transfer assembly all include position detection devices, which define the transfer positions.

[0015] In one embodiment of the present invention, the Z-axis transfer assembly is further provided with a wheel dresser. [Effects of the Invention]

[0016] Compared with the prior art, the above technical solution of the present invention has the following advantages: The ultrasonic grinding machine described in this invention is an improved version of a conventional grinding machine, adding an ultrasonic generator to the conventional grinding machine. The ultrasonic generator and grinding assembly are respectively located on both sides of the workpiece to be processed, so that the movements of the two assemblies do not interfere with or affect each other. The ultrasonic generator functions as a positioning mechanism for mounting the workpiece, and the ultrasonic waves generated by the ultrasonic generator determine the clamping position of the workpiece to ensure clamping accuracy. Meanwhile, the working end of the ultrasonic generator is configured to act on the workpiece to be processed. The ultrasonic generator applies ultrasonic waves to the workpiece when the grinding assembly grinds the workpiece, thereby assisting the grinding process by the grinding assembly, thereby reducing the grinding force generated during grinding, improving grinding accuracy, and reducing the risk of damage to the workpiece. [Brief explanation of the drawings]

[0017] In order to make the present invention more clearly understandable, the present invention will be described in more detail below based on specific embodiments of the present invention with reference to the accompanying drawings. [Figure 1] 1 is a schematic diagram of the overall structure of the grinding machine with ultrasonic machining function of the present invention. [Figure 2] FIG. 2 is a structural schematic diagram of the headstock member of the present invention. [Figure 3]2 is a structural schematic diagram of the ultrasonic generator of the present invention when it is linked with the headstock member. [Figure 4] 1 is a structural diagram of an internal grinding device according to the present invention; [Figure 5] 1 is a front view of the thread grinding device of the present invention; [Figure 6] 2 is a schematic diagram of the rear structure of the thread grinding device of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will now be further described with reference to the drawings and specific examples so that those skilled in the art can better understand and practice the present invention, but the examples given are not intended to limit the present invention.

[0019] As shown in FIG. 1, the grinding machine with ultrasonic machining function of the present invention includes a machine tool 1, a Z-axis transfer assembly 2, an X-axis transfer assembly 3, a headstock assembly 4, an ultrasonic generator 5, and a grinding assembly. The machine tool 1 has a "T"-shaped structure, the Z-axis transfer assembly 2 and the X-axis transfer assembly 3 are all installed on the machine tool 1, the Z-axis transfer assembly 2 extends along the Z-axis direction, the X-axis transfer assembly 3 extends along the X-axis direction, the Z-axis direction and the X-axis direction are perpendicular to each other, and the Z-axis transfer assembly 2 and the X-axis transfer assembly 3 are perpendicular to each other; The headstock assembly 4 and the ultrasonic generator 5 are provided on the Z-axis transfer assembly 2, and the headstock assembly 4 and the ultrasonic generator 5 are driven by the Z-axis transfer assembly 2 to move along the Z-axis direction, the headstock assembly 4 is used to clamp the workpiece, the ultrasonic generator 5 is provided on one side of the headstock assembly 4 corresponding to the headstock assembly 4, the working end of the ultrasonic generator 5 acts on the workpiece to be processed, and the ultrasonic generator 5 can generate ultrasonic waves to act on the workpiece to be processed; The grinding assembly is mounted on the X-axis transfer assembly 3 on the other side of the headstock assembly 4, corresponding to the ultrasonic generator 5. In this embodiment, the grinding assembly includes an internal grinding device 6 and a thread grinding device 7. The X-axis transfer assembly 3 drives the internal grinding device 6 and the thread grinding device 7, and the working ends of the internal grinding device 6 and the thread grinding device 7 act on the workpiece, respectively, allowing for high-speed switching to meet various grinding needs and enabling various grinding operations. In other embodiments, various types of grinding assemblies, such as cylindrical grinding devices, may be added according to actual usage needs. Also, combinations of different grinding assemblies may be provided. This is not a limitation. When the grinding assembly is mounted on the X-axis transfer assembly 3 and driven to reciprocate by the X-axis transfer assembly 3, various positions on the workpiece can be ground and various grinding processes can be achieved.

[0020] During actual machining, the workpiece to be machined is clamped on the headstock assembly 4, and the ultrasonic generator 5 is applied to the workpiece, with the tip of the ultrasonic generator 5 abutting against the workpiece to restrict the workpiece clamping. Once the workpiece is firmly fixed, the Z-axis transfer assembly 2 drives the headstock assembly 4 to move toward the X-axis transfer assembly 3, and the X-axis transfer assembly 3 drives the polishing assembly to move in the X-axis direction, so that the polishing assembly acts on the workpiece to its initial polishing position. Once all movements are complete, the polishing assembly and the ultrasonic generator 5 are driven, and the Z-axis transfer assembly 2 drives the headstock assembly 4 to transport it in the Z-axis direction, and the ultrasonic generator 5 supports the polishing operation by the polishing assembly.

[0021] As described above, this embodiment provides a grinding machine with ultrasonic machining functions and the operation of the grinding machine. Compared with the conventional grinding machine structure, an ultrasonic generator 5 is added. The ultrasonic generator 5 and the polishing assembly are respectively mounted on both sides of the workpiece to be machined, so that the movements of the two assemblies do not interfere with or affect each other. The ultrasonic generator 5 functions as a positioning mechanism for mounting the workpiece, and the tip of the ultrasonic generator 5 limits the workpiece clamping, ensuring the clamping accuracy of the workpiece. Meanwhile, the working end of the ultrasonic generator 5 is configured to act on the workpiece to be machined. The ultrasonic generator 5 applies ultrasonic waves to the workpiece when the polishing assembly polishes the workpiece, thereby assisting the polishing assembly in the grinding process. This not only improves processing efficiency but also effectively reduces the grinding force generated during grinding, resulting in better surface roughness.

[0022] As shown in FIG. 2 , the headstock assembly 4 of this embodiment includes a first table 41 and a clamping mechanism 42 attached to the first table 41. The first table 41 is attached to the X-axis transfer assembly 3, and the clamping mechanism 42 is used to clamp the workpiece. In this embodiment, the clamping mechanism 42 is configured using a hydraulic clamping mechanism, which effectively ensures uniform and stable workpiece clamping force and ensures high clamping and grinding quality. However, other gripping mechanisms may be used in other embodiments as long as they can clamp and secure the workpiece. The first table 41 rotates the clamping mechanism 42. When grinding long workpieces, the grinding assembly link must be extended. However, the small diameter of the link reduces the link's rigidity and makes it prone to bending or breaking. The headstock assembly 4 of this embodiment allows the first table 41, located below the clamping mechanism 42, to rotate the clamping mechanism 42 180°, enabling double-sided grinding. This allows the workpiece to be rotated and grinded on a different side without extending the link, even if the workpiece is long, to meet the requirements of the entire grinding process.

[0023] As shown in FIG. 3 , when feeding a workpiece using the headstock assembly 4 of this embodiment, the workpiece must be fed from the side of the clamping mechanism 42. At this time, since the ultrasonic generator 5 needs to avoid the workpiece feeding path, in this embodiment, an ultrasonic generator slide base is further provided on the Z-axis transfer assembly 2, and the ultrasonic generator 5 is mounted on the ultrasonic generator slide base 51. By configuring the ultrasonic generator 5 to be movable relative to the headstock assembly 4, the ultrasonic generator 5 slides away from the headstock assembly 4 on the ultrasonic generator slide base 51 when feeding a workpiece, thereby avoiding the workpiece feeding action. After workpiece feeding is completed, the ultrasonic generator 5 slides close to the headstock assembly 4 on the ultrasonic generator slide base 51, allowing the working end of the ultrasonic generator 5 to act on the workpiece.

[0024] As shown in FIG. 4, the internal grinding device 6 includes a second table 61 and an internal grinding body 62 mounted on the second table 61, and the internal grinding body 62 is rotated by the second table 61, which is advantageous for adjusting the grinding angle of the internal grinding body 62 according to actual working conditions. Specifically, the internal polishing body 62 includes an internal polishing head and an internal polishing drive source, and the internal polishing drive source rotates and drives the internal polishing head to perform a polishing action.

[0025] 5, the thread grinding device 7 includes a mounting frame 71, a Y-axis transfer assembly 72, a third table 73, and a thread grinding body 74. Here, the mounting frame 71 is mounted on an X-axis transfer assembly 3, the Y-axis transfer assembly 72 extends to the mounting frame 71 along the Y-axis direction, both the X-axis direction and the Z-axis direction are perpendicular to the Y-axis direction, the X-axis transfer assembly 3, the Z-axis transfer assembly 2, and the Y-axis transfer assembly 72 perform transfer actions in three directions in space, the third table 73 is mounted on the Y-axis transfer assembly 72 and driven to move along the Y-axis direction by the Y-axis transfer assembly 72, the thread grinding body 74 is mounted on the third table 73 and driven to rotate by the third table 73, the thread grinding body 74 is driven by the Y-axis transfer assembly 72 to be transported up and down along the Y-axis direction, and the thread grinding body 74 is driven to rotate by the third table 73. When grinding the thread orbit of the workpiece, the thread orbit has a specific thread lead angle, so during grinding, the thread grinding body 74 is driven by the third table 73 to rotate to the angle set by the system, and is also driven to move up and down along the Y-axis direction by the Y-axis transfer assembly 72, so that the height of the center of the thread grinding body 74 remains constant, thereby meeting the requirements of the grinding process.

[0026] Specifically, the screw grinding body 74 includes a screw grinding head and a screw grinding drive source, and the screw grinding drive source rotates and drives the screw grinding head to perform a grinding action.

[0027] 6, the thread grinding device 7 further includes a measuring device mounted on the mounting frame 71, which is positioned facing the workpiece to be machined. The measuring device determines the relative position between the workpiece and the thread grinding body 74, and determines the feed position during initial machining.

[0028] Specifically, the X-axis transfer assembly 3, the Z-axis transfer assembly 2, and the Y-axis transfer assembly 72 all have linear power sources and stages driven by the linear power sources, and the linear power sources are configured to drive the stages in a reciprocating manner. In this embodiment, the linear power sources of the X-axis transfer assembly 3, the Z-axis transfer assembly 2, and the Y-axis transfer assembly 72 are all screw slide units, and the screw slide units are configured to drive the stages to move linearly. In other embodiments, the linear power sources may be configured as other power assemblies, such as air cylinder drive assemblies or linear module motor drive assemblies, as long as they can move the stages linearly. The screw slide units, air cylinder drive assemblies, and linear module motor drive assemblies are all conventional technologies, and will not be described in detail here.

[0029] Specifically, in order to ensure the accuracy of the moving positions of the headstock assembly 4 and the grinding assembly, the X-axis transfer assembly 3, the Z-axis transfer assembly 2, and the Y-axis transfer assembly 72 are all configured to include position detection devices. The position detection devices limit the transfer positions, and the position detection devices may be linear encoders, which can be combined with photoelectric detection sensors to accurately determine the transfer positions.

[0030] 1, the Z-axis transfer assembly 2 is further provided with a wheel dresser 8. The grinding wheel of the polishing assembly can be dressed by the wheel dresser 8 when it becomes dull.

[0031] Obviously, the above examples are merely illustrative for the purpose of clarity and are not intended to limit the embodiments. Those skilled in the art can make other different modifications or changes based on the above description. It is not necessary to comprehensively list all the embodiments here, and it is impossible to comprehensively list all the embodiments. However, obvious changes or modifications derived therefrom still fall within the scope of protection of the present invention. [Explanation of symbols]

[0032] 1 Machine tools 2 Z-axis transfer assembly 3 X-axis transfer assembly 4 Headstock Assembly 41 Table 1 42 Clamping mechanism 5. Ultrasonic generator 51 Ultrasonic generator slide base 6 Internal grinding equipment 61 Table 2 62 Internally polished body 7 Thread grinding equipment 71 Mounting frame 72 Y-axis transfer assembly 73 Table 3 74 Screw grinding body 75 Measuring Instruments 8 Wheel Dresser

Claims

1. A grinding machine with an ultrasonic processing function, Machine tools and a Z-axis transfer assembly provided on the machine tool and extending along a Z-axis direction; an X-axis transfer assembly provided in the machine tool, extending along an X-axis direction, the Z-axis direction and the X-axis direction being perpendicular to each other; a headstock assembly provided on the Z-axis transfer assembly and used to clamp a workpiece; an ultrasonic generator provided on the Z-axis transfer assembly and disposed on one side of the headstock assembly corresponding to the headstock assembly, the ultrasonic generator having an operating end that acts on a workpiece to be machined; a polishing assembly that is provided on the X-axis transfer assembly, that is provided on the other side of the headstock assembly corresponding to the ultrasonic generator, that has an operating end that acts on a workpiece to be machined, and that is driven to move back and forth by the X-axis transfer assembly to polish various positions of the workpiece.

2. The headstock assembly includes: The first table, 2. The grinding machine with ultrasonic machining function according to claim 1, further comprising: a clamping mechanism provided on the first table, used to clamp the workpiece, and rotated by the first table.

3. 2. The grinding machine with ultrasonic machining function according to claim 1, wherein the Z-axis transfer assembly is further provided with an ultrasonic generator slide base, the ultrasonic generator is provided on the ultrasonic generator slide base, and the ultrasonic generator slides on the ultrasonic generator slide base toward or away from the headstock assembly.

4. 2. The grinding machine with ultrasonic machining function according to claim 1, wherein the polishing assembly includes an internal grinding device and a thread grinding device, and the X-axis transfer assembly moves the internal grinding device and the thread grinding device to act on the workpiece to be machined.

5. The internal grinding device is A second table; 5. The grinding machine with ultrasonic processing function according to claim 4, further comprising: an internal polishing body provided on the second table, rotated by the second table, and including an internal polishing head and an internal polishing drive source.

6. The thread grinding device is A mounting frame and a Y-axis transfer assembly provided on the mounting frame, extending along a Y-axis direction, with both the X-axis direction and the Z-axis direction being perpendicular to the Y-axis direction; a third table provided in the Y-axis transfer assembly and moved along the Y-axis by the Y-axis transfer assembly; a thread grinding body that is provided on the third table, is rotationally driven by the third table, and includes a thread grinding head and a thread grinding drive source.

7. 7. The grinding machine with ultrasonic machining function according to claim 6, wherein the thread grinding device further includes a measuring device provided on the mounting frame, the measuring device being provided facing the workpiece to be machined.

8. 7. The grinding machine with ultrasonic machining function according to claim 6, wherein the X-axis transfer assembly, the Z-axis transfer assembly, and the Y-axis transfer assembly all include a linear power source and a stage driven by the linear power source, and the linear power source drives the stage to move back and forth.

9. 7. The grinding machine with ultrasonic machining function according to claim 6, wherein the X-axis transfer assembly, the Z-axis transfer assembly, and the Y-axis transfer assembly all include position detection devices, and the position detection devices limit the transfer positions.

10. 2. The grinding machine with ultrasonic machining function according to claim 1, wherein the Z-axis transfer assembly is further provided with a wheel dresser.

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