Numerical control grinding machine for ball head cutter

Abstract

The utility model discloses a ball head cutter numerical control grinding machine, and relates to the technical field of machine tools. The ball head cutter numerical control grinding machine comprises a machine body, a workpiece frame assembly and a grinding wheel frame assembly, the workpiece frame assembly and the grinding wheel frame assembly are slidably arranged on the mounting face of the machine body, the workpiece frame assembly comprises a first workpiece frame, a second workpiece frame and a rotary table, the first workpiece frame is slidably arranged on the machine body along the X axis, the rotary table is arranged on the first workpiece frame, and the second workpiece frame is arranged on the rotary table. The grinding wheel frame assembly comprises a grinding wheel frame arranged on the machine tool body in a sliding mode along the Y axis and a mounting plate connected with the grinding wheel frame in a sliding mode along the Z axis, and a grinding wheel assembly is arranged on the mounting plate and used for grinding the workpiece to be machined. The grinding wheel frame can be driven to move close to or away from the workpiece frame assembly. The machining precision of the ball head cutter can be improved.

Description

Technical Field

[0001] This application relates to the technical field of machine tools, and more particularly, to a numerically controlled grinding machine for ball-end cutters. Background Art

[0002] The ball-end cutter is a new type of structural cutter for machining complex curved surfaces on numerically controlled machine tools and is also one of the most important cutters for the finish machining of complex three-dimensional curved surfaces. It has high machining accuracy and long service life, meets the need for automatic machining of complex spatial curved surfaces, and is widely used in the manufacturing industry.

[0003] In the prior art, a simple grinding equipment is generally used for grinding the ball-end cutter, and the machining accuracy of this equipment is low, and the machining quality of the ball-end cutter cannot be guaranteed. Utility Model Content

[0004] The purpose of this application is to provide a numerically controlled grinding machine for ball-end cutters, which can improve the machining accuracy of the ball-end cutter.

[0005] The embodiments of this application are implemented as follows:

[0006] The embodiments of this application provide a numerically controlled grinding machine for ball-end cutters, including a bed body, and a workpiece holder assembly and a grinding wheel holder assembly slidably arranged on the mounting surface of the bed body. The workpiece holder assembly includes a first workpiece holder, a second workpiece holder and a turntable. The first workpiece holder is slidably arranged on the bed body along the X-axis, the turntable is arranged on the first workpiece holder, and the second workpiece holder is arranged on the turntable. The second workpiece holder is used for mounting the workpiece to be machined. The grinding wheel holder assembly includes a grinding wheel holder slidably arranged on the bed body along the Y-axis and a mounting plate slidably connected with the grinding wheel holder along the Z-axis. A grinding wheel assembly is arranged on the mounting plate, and the grinding wheel assembly is used for grinding the workpiece to be machined. The grinding wheel holder can be driven to move towards or away from the workpiece holder assembly.

[0007] Optionally, as an implementable manner, a first linear driving member is arranged on the bed body, and the first linear driving member drives the first workpiece holder to perform a reciprocating linear motion along the X-axis.

[0008] Optionally, as an implementable manner, a second linear driving member is arranged on the bed body, and the second linear driving member drives the grinding wheel holder to perform a reciprocating linear motion along the Y-axis.

[0009] Optionally, as an implementable manner, a third linear driving member is arranged on the grinding wheel holder, and the third linear driving member drives the mounting plate to perform a reciprocating linear motion along the Z-axis.

[0010] Optionally, as an implementable manner, a slide rail is laid on the second workpiece holder, and a workpiece mounting bracket for mounting a workpiece to be processed is slidably arranged on the slide rail, and the workpiece mounting bracket is driven to slide along the extension direction of the slide rail.

[0011] Optionally, as an implementable manner, a fourth linear drive member is arranged on the second workpiece holder, and the fourth linear drive member drives the workpiece mounting bracket to perform a reciprocating linear motion.

[0012] Optionally, as an implementable manner, the grinding wheel assembly includes a grinding wheel motor arranged on the mounting plate and a grinding wheel arranged at the driving end of the grinding wheel motor, and the grinding wheel motor drives the grinding wheel to rotate.

[0013] Optionally, as an implementable manner, an oil spray pipe is arranged on the mounting plate, and a coolant is sprayed onto the grinding wheel on the mounting plate through the oil spray pipe.

[0014] Optionally, as an implementable manner, a workpiece probe is further arranged on the mounting plate, and the workpiece probe is used to detect the position of the workpiece to be processed.

[0015] Optionally, as an implementable manner, a workpiece shaft is arranged on the workpiece mounting bracket, and the workpiece shaft is used to fix the workpiece to be processed.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The ball-end cutter CNC grinding machine provided by the present application includes a bed body, and a workpiece holder assembly and a grinding wheel holder assembly slidably arranged on the mounting surface of the bed body. The workpiece holder assembly includes a first workpiece holder, a second workpiece holder and a turntable. The first workpiece holder is slidably arranged on the bed body along the X axis. The turntable is arranged on the first workpiece holder. The second workpiece holder is arranged on the turntable. The second workpiece holder is used to mount the workpiece to be processed, so that the workpiece to be processed on the second workpiece holder can rotate with the turntable and can also slide along the X axis with the first workpiece holder. The grinding wheel holder assembly includes a grinding wheel holder slidably arranged on the bed body along the Y axis and a mounting plate slidably connected with the grinding wheel holder along the Z axis. A grinding wheel assembly is arranged on the mounting plate, so that the grinding wheel assembly can slide along the Z axis with the mounting plate and can also slide along the Y axis with the grinding wheel holder. The grinding wheel assembly is used for grinding the workpiece to be processed. The grinding wheel holder can be driven to move towards or away from the workpiece holder assembly. Through the coordinated movement of the workpiece holder assembly and the grinding wheel holder assembly, the processing accuracy of the ball-end cutter CNC grinding machine is higher. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 One of the structural schematic diagrams of the ball-end cutter CNC grinding machine provided by the embodiment of the present application;

[0020] Figure 2 Another structural schematic diagram of the ball-end cutter CNC grinding machine provided by the embodiment of the present application;

[0021] Figure 3 The third structural schematic diagram of the ball-end cutter CNC grinding machine provided by the embodiment of the present application.

[0022] Icon: 100 - ball-end cutter CNC grinding machine; 110 - bed body; 120 - workpiece holder assembly; 121 - first workpiece holder; 122 - second workpiece holder; 1221 - slide rail; 1222 - workpiece mounting bracket; 1223 - workpiece shaft; 1224 - fourth linear drive member; 123 - turntable; 130 - grinding wheel head assembly; 131 - grinding wheel head; 132 - mounting plate; 133 - grinding wheel assembly; 134 - fuel injection pipe; 135 - workpiece probe. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Generally, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0027] Please refer to Figure 1 、 Figure 2 and Figure 3 , this embodiment provides a numerical control grinding machine 100 for a ball-end cutter, including a bed body 110, and a workpiece holder assembly 120 and a grinding wheel holder assembly 130 slidably arranged on the mounting surface of the bed body 110. The workpiece holder assembly 120 includes a first workpiece holder 121, a second workpiece holder 122, and a turntable 123. The first workpiece holder 121 is slidably arranged on the bed body 110 along the X-axis. The turntable 123 is arranged on the first workpiece holder 121. The second workpiece holder 122 is arranged on the turntable 123. The second workpiece holder 122 is used for installing the workpiece to be machined. The grinding wheel holder assembly 130 includes a grinding wheel holder 131 slidably arranged on the bed body 110 along the Y-axis and a mounting plate 132 slidably connected with the grinding wheel holder 131 along the Z-axis. A grinding wheel assembly 133 is arranged on the mounting plate 132. The grinding wheel assembly 133 is used for grinding the workpiece to be machined. The grinding wheel holder 131 can be driven to move towards or away from the workpiece holder assembly 120.

[0028] Specifically, the turntable 123 is a DD turntable 123. When the ball-end cutter CNC grinding machine 100 is working, a workpiece to be machined is installed on the second workpiece holder 122. The first workpiece holder 121 is slidably arranged on the machine body 110 along the X-axis. The turntable 123 is arranged on the first workpiece holder 121. The second workpiece holder 122 is arranged on the turntable 123. When the first workpiece holder 121 is driven to slide along the X-axis, the workpiece to be machined arranged on the second workpiece holder 122 follows the first workpiece holder 121 to slide along the X-axis. When the turntable 123 drives the second workpiece holder 122 to rotate, the workpiece to be machined arranged on the second workpiece holder 122 follows the second workpiece holder 122 to rotate by a preset angle. The grinding wheel head assembly 130 includes a grinding wheel head 131 slidably arranged on the machine body 110 along the Y-axis and a mounting plate 132 slidably connected with the grinding wheel head 131 along the Z-axis. A grinding wheel assembly 133 is arranged on the mounting plate 132. The mounting plate 132 is driven to slide along the Z-axis so that the grinding wheel assembly 133 can follow the mounting plate 132 to slide along the Z-axis. The grinding wheel head 131 is driven to slide along the Y-axis so that the grinding wheel assembly 133 can follow the grinding wheel head 131 to slide along the Y-axis. The first workpiece holder 121, the turntable 123, the grinding wheel head 131 and the mounting plate 132 are controlled by a numerical control module to move in cooperation to ensure the machining accuracy of the ball-end cutter. It should be noted that the X-axis, Y-axis, and Z-axis are specifically marked in Figure 1 and the X-axis, Y-axis, and Z-axis are perpendicular to each other in pairs.

[0029] The ball-end cutter CNC grinding machine 100 provided by the present application includes a machine body 110, and a workpiece holder assembly 120 and a grinding wheel head assembly 130 slidably arranged on the mounting surface of the machine body 110. The workpiece holder assembly 120 includes a first workpiece holder 121, a second workpiece holder 122 and a turntable 123. The first workpiece holder 121 is slidably arranged on the machine body 110 along the X-axis. The turntable 123 is arranged on the first workpiece holder 121. The second workpiece holder 122 is arranged on the turntable 123. The second workpiece holder 122 is used for installing a workpiece to be machined so that the workpiece to be machined on the second workpiece holder 122 can follow the turntable 123 to rotate and can also follow the first workpiece holder 121 to slide along the X-axis. The grinding wheel head assembly 130 includes a grinding wheel head 131 slidably arranged on the machine body 110 along the Y-axis and a mounting plate 132 slidably connected with the grinding wheel head 131 along the Z-axis. A grinding wheel assembly 133 is arranged on the mounting plate 132 so that the grinding wheel assembly 133 can follow the mounting plate 132 to slide along the Z-axis and can also follow the grinding wheel head 131 to slide along the Y-axis. The grinding wheel assembly 133 is used for grinding the workpiece to be machined. The grinding wheel head 131 can be driven to move towards or away from the workpiece holder assembly 120. Through the cooperative movement of the workpiece holder assembly 120 and the grinding wheel head assembly 130, the machining accuracy of the ball-end cutter CNC grinding machine 100 is higher.

[0030] In a feasible embodiment of the present application, as Figure 1 , Figure 2 andFigure 3 As shown in the figure, a first linear drive is provided on the bed body 110, and the first linear drive drives the first workpiece holder 121 to perform reciprocating linear motion along the X-axis.

[0031] Furthermore, a second linear drive is provided on the bed body 110, and the second linear drive drives the grinding wheel holder 131 to perform reciprocating linear motion along the Y-axis.

[0032] A third linear drive is provided on the grinding wheel holder 131, and the third linear drive drives the mounting plate 132 to perform reciprocating linear motion along the Z-axis.

[0033] Specifically, when the ball-nose cutter CNC grinding machine 100 is working, a workpiece to be machined is installed on the second workpiece holder 122. The first workpiece holder 121 is slidably arranged on the bed body 110 along the X-axis. The turntable 123 is arranged on the first workpiece holder 121, and the second workpiece holder 122 is arranged on the turntable 123. The first linear drive drives the first workpiece holder 121 to slide along the X-axis, and the workpiece to be machined arranged on the second workpiece holder 122 follows the first workpiece holder 121 to slide along the X-axis. When the turntable 123 drives the second workpiece holder 122 to rotate, the workpiece to be machined arranged on the second workpiece holder 122 follows the second workpiece holder 122 to rotate by a preset angle. The grinding wheel holder assembly 130 includes a grinding wheel holder 131 slidably arranged on the bed body 110 along the Y-axis and a mounting plate 132 slidably connected to the grinding wheel holder 131 along the Z-axis. A grinding wheel assembly 133 is arranged on the mounting plate 132. The third linear drive drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can follow the mounting plate 132 to slide along the Z-axis. The second linear drive drives the grinding wheel holder 131 to slide along the Y-axis so that the grinding wheel assembly 133 can follow the grinding wheel holder 131 to slide along the Y-axis. The first workpiece holder 121, the turntable 123, the grinding wheel holder 131 and the mounting plate 132 are controlled by a numerical control module to cooperate in motion to ensure the machining accuracy of the ball-nose cutter. The second linear drive drives the grinding wheel holder 131 to perform reciprocating linear motion along the Y-axis so that the grinding wheel holder 131 moves towards or away from the workpiece holder assembly 120. The first linear drive drives the first workpiece holder 121 to slide along the X-axis so that the workpiece to be machined arranged on the second workpiece holder 122 follows the first workpiece holder 121 to slide along the X-axis to adjust the contact position between the workpiece to be machined and the grinding wheel assembly 133.

[0034] In a feasible embodiment of the present application, as Figure 1 、 Figure 2 and Figure 3 shown, a slide rail 1221 is laid on the second workpiece holder 122, and a workpiece mounting holder 1222 for installing the workpiece to be machined is slidably arranged on the slide rail 1221, and the workpiece mounting holder 1222 is driven to slide along the extension direction of the slide rail 1221.

[0035] Specifically, when the CNC grinding machine 100 for ball-end cutters is working, the workpiece to be machined is installed on the workpiece mounting frame 1222. The first workpiece frame 121 is slidably arranged on the machine body 110 along the X-axis. The turntable 123 is arranged on the first workpiece frame 121, and the second workpiece frame 122 is arranged on the turntable 123. The first linear drive member drives the first workpiece frame 121 to slide along the X-axis, and the workpiece to be machined arranged on the second workpiece frame 122 slides along the X-axis following the first workpiece frame 121. When the turntable 123 drives the second workpiece frame 122 to rotate, the workpiece to be machined arranged on the second workpiece frame 122 rotates by a preset angle following the second workpiece frame 122. The grinding wheel headstock assembly 130 includes a grinding wheel headstock 131 slidably arranged on the machine body 110 along the Y-axis and a mounting plate 132 slidably connected to the grinding wheel headstock 131 along the Z-axis. A grinding wheel assembly 133 is arranged on the mounting plate 132. The third linear drive member drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can slide along the Z-axis following the mounting plate 132. The second linear drive member drives the grinding wheel headstock 131 to slide along the Y-axis so that the grinding wheel assembly 133 can slide along the Y-axis following the grinding wheel headstock 131. The first workpiece frame 121, the turntable 123, the grinding wheel headstock 131 and the mounting plate 132 are controlled by the numerical control module to move in cooperation to ensure the machining accuracy of the ball-end cutter. The second linear drive member drives the grinding wheel headstock 131 to perform a reciprocating linear motion along the Y-axis so that the grinding wheel headstock 131 moves towards or away from the workpiece headstock assembly 120. The first linear drive member drives the first workpiece frame 121 to slide along the X-axis so that the workpiece to be machined arranged on the second workpiece frame 122 slides along the X-axis following the first workpiece frame 121 to adjust the contact position between the workpiece to be machined and the grinding wheel assembly 133. The cutting point of the grinding wheel remains unchanged. By driving the workpiece mounting frame 1222 to slide along the extension direction of the slide rail 1221 and cooperating with the rotation of the turntable 123, the machining of the ball-end cutter can be completed to ensure the machining accuracy of the ball-end cutter.

[0036] In a feasible embodiment of the present application, as Figure 1 , Figure 2 and Figure 3 shown, a fourth linear drive member 1224 is arranged on the second workpiece frame 122, and the fourth linear drive member 1224 drives the workpiece mounting frame 1222 to perform a reciprocating linear motion.

[0037] Specifically, the numerical control module controls the coordinated movement of the first workpiece holder 121, the workpiece mounting bracket 1222, the turntable 123, the grinding wheel bracket 131, and the mounting plate 132 to ensure the machining accuracy of the ball-end cutter. The second linear drive member drives the grinding wheel bracket 131 to perform reciprocating linear motion along the Y-axis, so that the grinding wheel bracket 131 moves towards or away from the workpiece holder assembly 120. Subsequently, the third linear drive member drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can slide along the Z-axis following the mounting plate 132 to adjust the grinding wheel assembly 133 to a proper position. The first linear drive member drives the first workpiece holder 121 to slide along the X-axis, so that the workpiece to be machined provided on the second workpiece holder 122 slides along the X-axis following the first workpiece holder 121 to adjust the contact position between the workpiece to be machined and the grinding wheel assembly 133. With the cutting point of the grinding wheel unchanged, the fourth linear drive member 1224 drives the workpiece mounting bracket 1222 to slide along the extending direction of the slide rail 1221 and cooperate with the rotation of the turntable 123 to complete the machining of the complex curved surface of the ball-end cutter, so as to ensure the machining accuracy of the ball-end cutter.

[0038] In a feasible embodiment of the present application, as Figure 1 , Figure 2 and Figure 3 shown, the grinding wheel assembly 133 includes a grinding wheel motor provided on the mounting plate 132 and a grinding wheel provided at the driving end of the grinding wheel motor, and the grinding wheel motor drives the grinding wheel to rotate.

[0039] Specifically, the numerical control module controls the coordinated movement of the first workpiece holder 121, the workpiece mounting bracket 1222, the turntable 123, the grinding wheel bracket 131, and the mounting plate 132 to ensure the machining accuracy of the ball-end cutter. The second linear drive member drives the grinding wheel bracket 131 to perform reciprocating linear motion along the Y-axis, so that the grinding wheel bracket 131 moves towards or away from the workpiece holder assembly 120. Subsequently, the third linear drive member drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can slide along the Z-axis following the mounting plate 132 to adjust the grinding wheel assembly 133 to a proper position. Subsequently, the grinding wheel motor is started to drive the grinding wheel to rotate to realize the grinding of the ball-end cutter by the grinding wheel assembly 133.

[0040] In a feasible embodiment of the present application, as Figure 1 , Figure 2 and Figure 3 shown, an oil spray pipe 134 is provided on the mounting plate 132, and coolant is sprayed onto the grinding wheel on the mounting plate 132 through the oil spray pipe 134.

[0041] Specifically, the numerical control module controls the coordinated movement of the first workpiece holder 121, the workpiece mounting frame 1222, the turntable 123, the grinding wheel holder 131, and the mounting plate 132 to ensure the machining accuracy of the ball-end cutter. The second linear drive member drives the grinding wheel holder 131 to perform reciprocating linear motion along the Y-axis, so that the grinding wheel holder 131 moves towards or away from the workpiece holder assembly 120. Subsequently, the third linear drive member drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can follow the mounting plate 132 to slide along the Z-axis, so as to adjust the grinding wheel assembly 133 to a suitable position. Subsequently, the grinding wheel motor is started to drive the grinding wheel to rotate, and at the same time, coolant is sprayed onto the grinding wheel on the mounting plate 132 through the oil spray pipe 134 to cool the grinding point and prevent burns and other situations during the tool machining process, so as to realize the grinding of the ball-end cutter by the grinding wheel assembly 133.

[0042] In a feasible embodiment of the present application, as Figure 1 , Figure 2 and Figure 3 shown, a workpiece probe 135 is further provided on the mounting plate 132, and the workpiece probe 135 is used to detect the position of the workpiece to be machined.

[0043] Specifically, the second linear drive member drives the grinding wheel holder 131 to perform reciprocating linear motion along the Y-axis, so that the grinding wheel holder 131 moves towards or away from the workpiece holder assembly 120. Subsequently, the third linear drive member drives the mounting plate 132 to slide along the Z-axis so that the grinding wheel assembly 133 can follow the mounting plate 132 to slide along the Z-axis, so as to detect the position of the workpiece to be machined through the workpiece probe 135 on the mounting plate 132, so as to adjust the grinding wheel assembly 133 to a suitable position. Subsequently, the grinding wheel motor is started to drive the grinding wheel to rotate, so as to realize the grinding of the ball-end cutter by the grinding wheel assembly 133.

[0044] In a feasible embodiment of the present application, as Figure 1 , Figure 2 and Figure 3 shown, a workpiece shaft 1223 is provided on the workpiece mounting frame 1222, and the workpiece shaft 1223 is used to fix the workpiece to be machined.

[0045] Specifically, when fixing the workpiece to be machined, the workpiece to be machined is fixed on the workpiece shaft 1223, so that the workpiece shaft 1223 drives the workpiece to be machined to rotate, and the grinding wheel motor drives the grinding wheel to rotate. Through the relative rotation of the grinding wheel and the workpiece to be machined, the grinding of the ball-end cutter by the grinding wheel assembly 133 is realized.

[0046] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ball end tool CNC grinding machine, characterized in that: It includes a bed body and a workpiece rack assembly and a grinding wheel rack assembly slidably arranged on the mounting surface of the bed body, the workpiece rack assembly includes a first workpiece rack, a second workpiece rack and a turntable, the first workpiece rack is slidably arranged on the bed body along the X-axis, the turntable is arranged on the first workpiece rack, the second workpiece rack is arranged on the turntable, the second workpiece rack is used to install the workpiece to be processed, the grinding wheel rack assembly includes a grinding wheel rack slidably arranged on the bed body along the Y-axis and a mounting plate slidably connected to the grinding wheel rack along the Z-axis, a grinding wheel assembly is arranged on the mounting plate, the grinding wheel assembly is used to grind the workpiece to be processed, and the grinding wheel rack can be driven to move toward or away from the workpiece rack assembly.

2. The ball end tool CNC grinding machine according to claim 1, characterized in that: The bed is provided with a first linear driving member, and the first linear driving member drives the first workpiece frame to perform reciprocating linear motion along the X-axis.

3. The ball end tool CNC grinding machine according to claim 1, characterized in that: The bed is provided with a second linear driving member, and the second linear driving member drives the grinding wheel frame to perform reciprocating linear motion along the Y axis.

4. The ball end tool CNC grinding machine according to claim 1, characterized in that: The grinding wheel frame is provided with a third linear driving member, and the third linear driving member drives the mounting plate to perform reciprocating linear motion along the Z axis.

5. The ball end tool CNC grinding machine according to claim 1, characterized in that: The second workpiece rack is provided with a slide rail, and a workpiece mounting frame for mounting the workpiece to be processed is slidably arranged on the slide rail, and the workpiece mounting frame is driven to slide along the extending direction of the slide rail.

6. The ball end tool CNC grinding machine according to claim 5, characterized in that: The second workpiece rack is provided with a fourth linear driving member, and the fourth linear driving member drives the workpiece mounting rack to perform reciprocating linear motion.

7. The ball end tool CNC grinding machine according to claim 1, characterized in that: The grinding wheel assembly comprises a grinding wheel motor arranged on the mounting plate and a grinding wheel arranged at a driving end of the grinding wheel motor, and the grinding wheel motor drives the grinding wheel to rotate.

8. The ball end tool CNC grinding machine according to claim 7, characterized in that: The mounting plate is provided with an oil spray pipe, through which coolant is sprayed to the grinding wheel on the mounting plate.

9. The ball end tool CNC grinding machine according to claim 8, characterized in that: A workpiece probe is also provided on the mounting plate, and the workpiece probe is used to detect the position of the workpiece to be processed.

10. The ball end tool CNC grinding machine according to claim 5, characterized in that: The workpiece mounting frame is provided with a workpiece shaft, and the workpiece shaft is used to fix the workpiece to be processed.

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