Grinding machine

Abstract

The application discloses a grinding machine, which comprises a mounting base, a rotating mechanism, a grinding wheel frame, an inner circular grinding assembly and an outer circular grinding assembly. The rotating mechanism is rotatably arranged on the mounting base. The grinding wheel frame comprises a fixing base, the fixing base comprises a main body part and a protruding part, the main body part comprises a first side face, the protruding part is located on the side of the main body part opposite to the first side face, the width of the protruding part gradually decreases in the direction away from the first side face, the protruding part comprises a second side face arranged away from the first side face and third and fourth side faces located on the two sides of the second side face, and the first, second, third and fourth side faces are all located on the outer circumferential side of the fixing base. The inner circular grinding assembly is detachably arranged on the second, third and fourth side faces. The outer circular grinding assembly is arranged on the first side face. The grinding machine solves the problems that the grinding machine has low modularization degree and it is difficult to increase the machining station of the inner circular grinding assembly in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining tools, in particular to a grinding machine. BACKGROUND

[0002] The numerical control high-precision composite grinding center is a typical process composite grinding machine. The outer circle, end face outer circle, inner hole, conical surface, curved surface, groove and thread grinding functions are highly combined through numerical control technology to realize the function of one-time clamping and multi-process grinding of the workpiece. Under the condition of unified reference, high-precision grinding between processes is guaranteed, becoming a high-precision, high-efficiency and multifunctional composite finishing center. The multi-station grinding wheel rotary table grinding machine commonly used at present integrates outer circle grinding spindles and inner hole grinding spindles on the rotary table type grinding wheel frame. By rotating the grinding wheel frame at different angles, the grinding processes of the outer circle, inner hole, end face, conical surface and chamfer of the workpiece are realized.

[0003] For example, the precision composite grinding machine universal rotary table type grinding wheel frame system and grinding machine disclosed in Chinese patent CN115972044A, wherein the grinding wheel frame system comprises: a rotating device, a rotary table frame, a spindle device mounted on the rotary table frame, an inner circle grinding device and a grinding fluid supply system. The spindle device comprises outer circle grinding wheels and end face grinding wheels mounted on both ends, and the inner circle grinding device is equipped with an inner circle grinding wheel. The control system is electrically connected with the grinding fluid supply system, the rotating device, the spindle device and the inner circle grinding device respectively. The rotating device controls the rotary table to rotate at a preset angle based on the control system, so that the grinding processing of the outer circle, the inner circle and the end face of the workpiece can be completed at one time.

[0004] The rotary table type grinding wheel frame in the existing grinding machine is usually in the shape of a cuboid. The outer grinding assembly is arranged on one side wall surface of the rotary table type grinding wheel, and the inner circle grinding assembly is arranged on the side wall surface opposite to the surface on which the outer grinding assembly is arranged. The remaining two side wall surfaces are used for connecting with the protective cover. Since multiple inner circle grinding assemblies are arranged on one surface, interference between the multiple inner circle grinding assemblies is likely to occur. When multiple inner circle grinding assemblies need to be installed, an extension assembly needs to be arranged on the side wall of the rotary table type grinding wheel to avoid interference between the multiple inner circle grinding assemblies.

[0005] That is, due to the limitation of the structure of the rotary table type grinding wheel in the existing grinding machine, the degree of modularity of the grinding machine is low, and it is difficult to increase the processing stations of the inner circle grinding assembly. SUMMARY

[0006] The main purpose of the present application is to provide a grinding machine to at least solve the problem of low degree of modularity of the grinding machine in the prior art and difficulty in increasing the processing stations of the inner circle grinding assembly.

[0007] According to one aspect of the present application, a grinding machine is provided, comprising:

[0008] a mounting seat;

[0009] A rotating mechanism is rotatably arranged on the mounting seat.

[0010] The grinding wheel frame comprises a fixed seat, the fixed seat comprises a main body part and a protruding part, the main body part comprises a first side surface, the protruding part is located on the side of the main body part opposite to the first side surface, the width of the protruding part gradually decreases in the direction away from the first side surface, the protruding part comprises a second side surface arranged away from the first side surface and a third side surface and a fourth side surface located on both sides of the second side surface, and the first side surface, the second side surface, the third side surface and the fourth side surface are all located on the outer circumferential side of the fixed seat.

[0011] An internal grinding assembly is detachably mounted on the second side surface, the third side surface and the fourth side surface.

[0012] An external grinding assembly is mounted on the first side surface.

[0013] Further, an included angle A between the second side surface and the third side surface satisfies a relationship 130°≤A≤140°; and / or,

[0014] An included angle B between the second side surface and the fourth side surface satisfies a relationship 130°≤B≤140°.

[0015] Further, the main body part at least comprises a rectangular body, and the protruding part comprises a trapezoidal prism body, and the rectangular body and the trapezoidal prism body are integrally formed.

[0016] Further, the main body part further comprises a fifth side surface and a sixth side surface, the fifth side surface and the sixth side surface are oppositely arranged, the fifth side surface is connected with the third side surface, and the sixth side surface is connected with the fourth side surface, wherein:

[0017] An included angle C between the fifth side surface and the third side surface satisfies a relationship 130°≤C≤140°; and / or,

[0018] An included angle D between the sixth side surface and the fourth side surface satisfies a relationship 130°≤D≤140°.

[0019] Further, the internal grinding assembly comprises a first internal grinding assembly mounted on the second side surface; or,

[0020] The internal grinding assembly comprises two second internal grinding assemblies, and the two second internal grinding assemblies are respectively mounted on the third side surface and the fourth side surface.

[0021] Further, the inner circular grinding assembly comprises an inner circular grinding support, an inner circular grinding spindle box and an inner circular grinding wheel, one end of the inner circular grinding support is installed on the protruding part, a inner circular grinding spindle box is arranged on the other end of the inner circular grinding support, a first spindle is arranged on the inner circular grinding spindle box, and the inner circular grinding wheel is installed on the first spindle.

[0022] The outer circular grinding assembly comprises an outer circular grinding spindle box and an outer circular grinding wheel, the outer circular grinding spindle box is installed on the first side wall, a second spindle is arranged on the outer circular grinding spindle box, and the outer circular grinding wheel is installed on the second spindle.

[0023] The grinding machine further comprises a protective cover, the protective cover is arranged on the outer periphery of the fixing base, the inner circular grinding spindle box and the outer circular grinding spindle box.

[0024] Further, the included angle between the inner circular grinding support and the axis of the second spindle is 45° or 90°.

[0025] Further, the rotary mechanism comprises a circular bearing table, the projection of the fixing base in the height direction of the grinding machine is a polygon, and the circumscribed circle of the polygon is consistent with the outer contour of the circular bearing table.

[0026] Further, the outer circular grinding assembly comprises an outer circular grinding spindle box, the outer circular grinding spindle box is locked on the first side wall through fasteners, and the bottom surface of the outer circular grinding spindle box is overlapped on the upper surface of the circular bearing table.

[0027] Further, the inner circular grinding assembly and the outer circular grinding assembly are arranged at intervals on the outer periphery of the fixing base, and the center of mass of the integrated structure formed by the inner circular grinding assembly, the outer circular grinding assembly and the fixing base is located on the rotation axis of the rotary mechanism.

[0028] Compared with the prior art, the fixed seat of the grinding machine comprises a protruding part and a main body part, the width of the protruding part gradually decreases in the direction away from the first side face, that is, the space outside the protruding part is larger relative to the main body part, at this time, the protruding part has a second side face (an end face away from the first side face) and third and fourth side faces on both sides of the second side face. When actually installing the internal grinding assembly, due to the predetermined included angle between the second, third and fourth side faces, the internal grinding assembly can be detachably installed on the second, third and fourth side faces based on the existence of the included angle and the increase of the space outside the protruding part, without the need to set an extension assembly on the fixed seat, the installed internal grinding assembly does not interfere with other structures, and the structure is more stable, facilitating the miniaturization and modular design of the grinding machine. The structure of the present application has a high degree of modularization of the grinding machine, and is easy to increase the machining stations of the internal grinding assembly. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the schematic embodiments of the present application and the explanations thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0030] Figure 1 The structure schematic diagram of the grinding machine disclosed by the present application is shown in the figure;

[0031] Figure 2 The exploded structure schematic diagram of the grinding machine disclosed by the present application is shown in the figure;

[0032] Figure 3 The structure schematic diagram of the fixed seat disclosed by the present application is shown in the figure;

[0033] Figure 4 The structure schematic diagram of the grinding machine in the three-station state disclosed by the present application is shown in the figure;

[0034] Figure 5 The structure schematic diagram of the grinding machine in the four-station state disclosed by the present application is shown in the figure.

[0035] Among the above drawings, the following reference signs are included:

[0036] 20, swivel mechanism; 21, mounting space; 22, protective cover; 30, fixing seat; 31, first side surface; 32, second side surface; 33, third side surface; 34, fourth side surface; 35, fifth side surface; 36, sixth side surface; 37, seventh side surface; 38, eighth side surface; 40, internal grinding assembly; 41, internal grinding support; 42, internal grinding headstock; 43, internal grinding wheel; 50, external grinding assembly; 51, external grinding headstock; 52, external grinding wheel; 60, protective cover; 70, drag chain; 80, measuring mechanism; 91, flow divider; 92, cooling pipe; 93, cooling valve; 301, main body portion; 302, protruding portion; 422, first spindle; 511, second spindle. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification mean the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth in the examples are not meant to limit the scope of the present application. It should also be understood that the size of the various parts shown in the figures can not be to scale and that the drawings are intended to conceptually illustrate the structures and procedures described herein. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description of the present application. In all examples shown and discussed herein, any specific value should be interpreted as merely an example and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items throughout the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0040] Reference is made to Figures 1 to 3 As shown, according to the embodiments of the present application, a grinding machine is provided, which includes a mounting seat (not shown in the figure), a swivel mechanism 20, a grinding wheel frame, an internal grinding assembly 40, and an external grinding assembly 50.

[0041] The rotating mechanism 20 is rotatably arranged on the mounting base. The grinding wheel frame comprises a fixed seat 30, the fixed seat 30 comprises a main body part 301 and a protruding part 302, the main body part 301 comprises a first side face 31, the protruding part 302 is located on the side of the main body part 301 opposite to the first side face 31, the width of the protruding part 302 gradually decreases in the direction away from the first side face 31, the protruding part 302 comprises a second side face 32 arranged away from the first side face 31 and a third side face 33 and a fourth side face 34 located on both sides of the second side face 32, the first side face 31, the second side face 32, the third side face 33 and the fourth side face 34 are all located on the outer circumferential side of the fixed seat 30. The internal grinding assembly 40 is detachably mounted on the second side face 32, the third side face 33 and the fourth side face 34. The external grinding assembly 50 is mounted on the first side face 31. It is worth mentioning that the outer circumferential side of the fixed seat 30 refers to the side wall surface of the fixed seat 30 except the bottom surface and the top surface.

[0042] Compared with the prior art, the fixed seat 30 of the grinding wheel frame in the grinding machine of the embodiment comprises a protruding part 302 and a main body part 301, the width of the protruding part 302 gradually decreases in the direction away from the first side face 31, that is, the space outside the protruding part 302 is larger relative to the main body part 301, at this time, the protruding part 302 has a second side face 32 (an end face away from the first side face 31) and a third side face 33 and a fourth side face 34 located on both sides of the second side face 32. When actually installing the internal grinding assembly 40, due to the existence of the predetermined included angle between the second side face 32, the third side face 33 and the fourth side face 34, based on the existence of the included angle and the increase of the space outside the protruding part 302, the internal grinding assembly 40 can be detachably mounted on the second side face 32, the third side face 33 and the fourth side face 34 without the need to arrange an extension assembly on the fixed seat 30, the installed internal grinding assembly 40 will not interfere with other structures, and the structure is more stable, which is convenient for realizing the miniaturization and modularization design of the grinding machine. The structure of the embodiment has high modularization degree of the grinding machine and is easy to increase the machining stations of the internal grinding assembly 40 compared with the prior art.

[0043] Considering the problem that when the internal grinding assemblies 40 are simultaneously installed on the second side face 32, the third side face 33 and the fourth side face 34, the internal grinding assemblies 40 may interfere with each other, thereby causing the grinding machine to not work normally. Therefore, the angles between the second side face 32 and the third side face 33 and between the second side face 32 and the fourth side face 34 are limited in the embodiment. The included angle A between the second side face 32 and the third side face 33 satisfies the relationship 130°≤A≤140°. Similarly, the included angle B between the second side face 32 and the fourth side face 34 satisfies the relationship 130°≤B≤140°. Exemplarily, the degrees of the included angles A and B may be 130°, 135°, 140° and the like.

[0044] Further, the main body 301 comprises a rectangular body, and the protruding part 302 comprises a trapezoidal prism, and the rectangular body and the trapezoidal prism are integrally formed. Of course, in other embodiments of the present application, the main body 301 can also comprise a triangular prism, a cylindrical body or other special-shaped column, as long as other deformation modes under the concept of the present application are within the protection scope of the present application.

[0045] Specifically, the second side surface 32, the third side surface 33 and the fourth side surface 34 in the embodiment are all side wall surfaces of a trapezoidal prism. Meanwhile, the integrally arranged rectangular body and trapezoidal prism can improve the structural strength of the fixing seat 30. In a preferred embodiment, the trapezoidal prism is an isosceles trapezoidal prism, that is, the third side surface 33 and the fourth side surface 34 are two equal surfaces, so as to balance the force exerted on the fixing seat 30 by the inner circular grinding assembly 40 installed on the third side surface 33 and the fourth side surface 34.

[0046] Further, the main body 301 further comprises a fifth side surface 35 and a sixth side surface 36, the fifth side surface 35 and the sixth side surface 36 are oppositely arranged, the fifth side surface 35 is connected with the third side surface 33, and the sixth side surface 36 is connected with the fourth side surface 34, wherein the included angle C between the fifth side surface 35 and the third side surface 33 satisfies the relationship 130°≤C≤140°. Alternatively, the included angle D between the sixth side surface 36 and the fourth side surface 34 satisfies the relationship 130°≤D≤140°. Exemplarily, the degrees of the included angles C and D can be 130°, 135°, 140° and the like.

[0047] Specifically, the fifth side surface 35 and the sixth side surface 36 are two opposite surfaces of the rectangular body, and the fifth side surface 35 and the sixth side surface 36 are usually used to install the protective cover 60. In order to avoid interference between the protective cover 60 and the inner circular grinding assembly 40, in the embodiment, the included angle C between the fifth side surface 35 and the third side surface 33 is limited to between 130° and 140°, and C is higher than 140°, which is easy to cause interference between the protective cover 60 and the inner circular grinding assembly 40. When C is lower than 130°, the inner circular grinding assembly 40 installed on the third side surface 33 and the fourth side surface 34 is easy to interfere. Similarly, the included angle D between the sixth side surface 36 and the fourth side surface 34 is limited to between 130° and 140°, so as to avoid interference between the components.

[0048] In one specific embodiment, the main body 301 further includes an isosceles trapezoidal prism, wherein the isosceles trapezoidal prism is integrally formed with the rectangular body, and the first side surface 31 is a side wall surface of the isosceles trapezoidal prism. The isosceles trapezoidal body also includes a seventh side surface 37 and an eighth side surface 38. The seventh side surface 37 connects the fifth side surface 35 and the first side surface 31, and the eighth side surface 38 connects the sixth side surface 36 and the first side surface 31. Furthermore, on the one hand, the arrangement of the isosceles trapezoidal prism increases the contact area between the fixed seat 30 and the rotating mechanism 20, thereby making the pressure applied by the fixed seat 30 to the rotating mechanism 20 more uniform and preventing the rotating mechanism 20 from shifting. On the other hand, the arrangement of the isosceles trapezoidal prism on the main body 301 increases the volume of the fixed seat 30, improves the rigidity of the fixed seat 30, and prevents the components installed on the fixed seat 30 from crushing the fixed seat 30. It is worth mentioning that the included angles between the seventh side 37 and the first side 31 and the fifth side 35 are all set between 130° and 140°, and the included angles between the eighth side 38 and the first side 31 and the sixth side 36 are all set between 130° and 140°, in order to prevent the protective cover 60 from interfering with the outer cylindrical grinding assembly.

[0049] To prevent interference between internal grinding assemblies 40 when they are simultaneously installed on the second side 32, the third side 33, and the third side 33, and to balance the forces exerted on the fixed base 30 by the internal grinding assemblies 40 and the external grinding assemblies 50, and to prevent the fixed base 30 from tilting, as shown in the attached... Figure 4 To be continued Figure 5 As shown, this embodiment provides two specific implementations: a three-station setup and a four-station setup for the grinding machine. Specifically, the internal grinding assembly 40 includes a first internal grinding assembly mounted on the second side 32. Alternatively, the internal grinding assembly 40 includes two second internal grinding assemblies, mounted on the third side 33 and the fourth side 34 respectively. The first internal grinding assembly is heavier than the second internal grinding assemblies to balance the forces exerted on the fixed base 30 by the internal and external grinding assemblies, preventing the fixed base 30 from tilting.

[0050] Further, the inner grinding assembly 40 comprises an inner grinding support 41, an inner grinding spindle box 42 and an inner grinding wheel 43, one end of the inner grinding support 41 is mounted on the protruding portion 302, the other end of the inner grinding support 41 is provided with the inner grinding spindle box 42, the inner grinding spindle box 42 is provided with a first spindle 422, and the inner grinding wheel 43 is mounted on the first spindle 422. The outer grinding assembly 50 comprises an outer grinding spindle box 51 and an outer grinding wheel 52, the outer grinding spindle box 51 is mounted on the first side surface 31, the outer grinding spindle box 51 is provided with a second spindle 511, and the outer grinding wheel 52 is mounted on the second spindle 511. The grinding machine further comprises a protective cover 60, which is arranged on the outer periphery of the fixed seat 30, the inner grinding spindle box 42 and the outer grinding spindle box 51.

[0051] Specifically, the inner grinding wheel 43 is used to extend into the object to be processed to process and polish the inner wall surface of the object to be processed, and the outer grinding wheel 52 is used to process and polish the end surface of the object to be processed. The protective cover 60 is mounted on the fifth side surface 35 and the sixth side surface 36, and the protective cover 60 is used to protect the inner grinding spindle box 42, the outer grinding spindle box 51 and the fixed seat 30.

[0052] Further, the angle between the length direction of the inner grinding support 41 and the axis of the second spindle 511 is 45° or 90°.

[0053] Specifically, when the grinding machine is provided with three workstations, i.e. the inner grinding assembly 40 is only mounted on the second side surface 32, the outer grinding wheel 52 is provided with two, and the outer grinding wheel 52 is mounted on both ends of the outer grinding spindle box 51, the angle between the inner grinding support 41 and the axis of the second spindle 511 is 90°. When the grinding machine is provided with four workstations, i.e. the inner grinding assembly 40 is provided with two, which are mounted on the third side surface 33 and the fourth side surface 34, and the outer grinding wheel 52 is provided with two, which are mounted on both ends of the outer grinding spindle box 51. At this time, the angle between the inner grinding support 41 and the axis of the second spindle 511 is 45°. In addition, the grinding machine is also provided with a control system (not shown in the figure), which is electrically connected with the rotating mechanism 20 to control the rotating angle and direction of the rotating mechanism 20, so as to realize the switching of the workstations on the grinding machine. That is to say, the present embodiment only needs to switch the predetermined angle, for example, the predetermined angle can be set to 30°, 40°, 50°, 60°, 70°, 80° or 90°, so as to switch to the next workstation, thereby simplifying the programming of the control system.

[0054] Further, the rotating mechanism 20 comprises a circular bearing table, which is arranged along the height direction of the grinding machine (as shown in the figure), and the inner grinding support 41 and the outer grinding spindle box 51 are arranged on the circular bearing table. Figure 1In the middle X direction, the projection of the fixing base 30 is a polygon, and the circumscribed circle of the polygon is consistent with the outer contour of the circular bearing table. That is to say, the fixing base 30 can also have a larger contact area between the fixing base 30 and the circular bearing table after considering the modular design, so that the fixing base 30 can exert more uniform pressure on the circular bearing table. In addition, a protective cover 22 is arranged on the outer periphery of the rotary mechanism 20 to protect the rotary mechanism 20.

[0055] In addition, the outer cylindrical grinding spindle box 51 is locked on the first side surface 31 by a fastener, and the bottom surface of the outer cylindrical grinding spindle box 51 overlaps the upper surface of the circular bearing table. Specifically, the first side surface 31 of the fixing base 30 has a mounting space 21 on the circular bearing table, and the mounting space 21 allows the outer cylindrical grinding spindle box 51 to be partially in direct contact with the circular bearing table, thereby reducing the pressure exerted by the outer cylindrical grinding spindle box 51 on the fixing base 30, and improving the structural stability of the entire grinding machine to some extent.

[0056] Further, the inner cylindrical grinding assembly 40 and the outer cylindrical grinding assembly 50 are arranged at the outer periphery of the fixing base 30, and the center of mass of the integrated structure formed by the inner cylindrical grinding assembly 40, the outer cylindrical grinding assembly 50, and the fixing base 30 is located on the axis of rotation of the rotary mechanism 20.

[0057] Specifically, the weight of the first inner cylindrical grinding assembly is higher than that of the second inner cylindrical grinding assembly. When the grinding machine is arranged in three stations, the center of mass of the integrated structure formed by the fixing base 30, the first inner cylindrical grinding assembly, and the outer cylindrical grinding assembly 50 is located on the axis of the circular bearing table. Similarly, when the grinding machine is arranged in four stations, the center of mass of the integrated structure formed by the fixing base 30, the two second inner cylindrical grinding assemblies, and the outer cylindrical grinding assembly 50 is still located on the axis of the circular bearing table. The structure of the present embodiment improves the working stability of the grinding machine and avoids the uneven force on the circular bearing table and the fixing base 30 from deviating in a particular direction.

[0058] In the present embodiment, the grinding machine further comprises a cooling assembly, which comprises a shunt pipe 91 and a cooling pipe 92. The shunt pipe 91 is arranged on the top surface of the fixed table and located in the protective cover 60, and the cooling pipe 92 is arranged on the outer cylindrical grinding spindle box 51 and the inner cylindrical grinding spindle box 42 to spray cooling liquid onto the outer cylindrical grinding wheel 52 or the inner cylindrical grinding wheel 43. The shunt pipe 91 is in communication with the cooling pipe 92 through the cooling valve 93 arranged on the outer cylindrical grinding wheel 52 and the inner cylindrical grinding wheel 43, respectively. In the present embodiment, the cooling assembly further comprises an adjusting part (not shown in the figure), which is electrically connected to the control system to control the flow of the liquid sprayed by the cooling pipe 92.

[0059] In addition, the grinding machine also includes a cable carrier 70 and a measuring mechanism 80. The cable carrier 70 is housed within a protective cover 60 and contains a water inlet pipe and a cable. The water inlet pipe is connected to a branch pipe 91, and the cable is connected to various components. The measuring mechanism 80 measures the workpiece dimensions by contacting it with a probe.

[0060] In a preferred embodiment, as shown in the appendix Figure 3 As shown, along the height direction of the grinding machine, the projection of the fixed base 30 is a near-regular octagon, meaning that the included angle between each adjacent sidewall of the fixed base 30, except for the top and bottom surfaces, is 135°. Furthermore, the first side surface 31 of the fixed base 30 has the largest area, creating a mounting space 21 between the first side surface 31 and the circular support table for the installation of the external cylindrical grinding assembly 50. The seventh side surface 37 and the eighth side surface 38 are identical rectangular surfaces, meaning both have the same width and length, and are the smallest possible surfaces. The arrangement of the seventh side surface 37 and the eighth side surface 38 gives the main body 301 an isosceles trapezoidal prism shape, improving the structural strength of the fixed base 30. The fifth side surface 35 and the sixth side surface 36 are opposite each other and are identical rectangular surfaces, used to connect the protective cover 60. The second side surface 32, the third side surface 33, and the fourth side surface 34 are identical rectangular surfaces, ensuring that when the same component is installed on the third side surface 33 and the fourth side surface 34, the forces on each part of the third side surface 33 and the fourth side surface 34 are the same. Furthermore, the included angle between each adjacent side is 135° to avoid interference between the components mounted on the fixed base 30. Simultaneously, the mounting method in this embodiment brings the heavy second spindle 511, protective cover 60, and outer cylindrical grinding wheel 52 closer to the rotation axis of the rotary mechanism 20, and the first spindle 422 is mounted on the second side 32, third side 33, and fourth side 34. This shortens the cantilever length of the inner cylindrical grinding support 41 through the structure of the fixed base 30, ensuring the stability of the inner cylindrical grinding assembly 40 during processing and rotation. Moreover, the short cantilever of the inner cylindrical grinding support 41 gives the inner cylindrical grinding assembly 40 higher structural strength and vibration resistance during grinding, thereby ensuring high dimensional accuracy and high surface roughness of the processed workpiece.

[0061] In the embodiment, the rotary mechanism 20 is internally provided with a direct drive torque motor (not shown in the figure), which can drive the rotary mechanism 20 to rotate, and an absolute rotary encoder (not shown in the figure) is internally installed in the rotary mechanism, which is electrically connected with the control system, and the control system of the grinder can control the direct drive torque motor to rotate to a preset angle based on an internal program, so as to realize switching of different stations, and finally achieve the machining purpose of outer circle, inner hole and end face processes. The probe of the measuring mechanism 80 is installed on an aluminum alloy hollow arm, the aluminum alloy arm is installed on a high-precision linear drive, the linear drive is composed of a rodless cylinder, a precision guide rail, a hydraulic buffer and a proximity switch, the device has the characteristics of simple structure, high motion accuracy and high repeat positioning accuracy, so as to ensure the repeat positioning accuracy of the measuring system to the workpiece. The cooling liquid enters the grinder through the water inlet pipe in the drag chain 70, and then is divided into one to four different routes according to the number of stations designed in the grinder, and then enters the outer circle grinding assembly 50 and the inner circle grinding assembly 40 respectively. In the embodiment, the adjusting part includes a valve island (not shown in the figure) and a gas control assembly (not shown in the figure), the valve island can adjust the air pressure in the gas control assembly, the gas control assembly is connected with the cooling valve 93, and the cooling valve 93 is opened by air pressure, so that the cooling liquid is sprayed out to cool and wash the grinding wheel and the workpiece, and at the same time, the heat and cutting generated in the grinding process are taken away, so as to ensure the final machining accuracy of the workpiece.

[0062] For the convenience of description, spatial relative terms such as "above", "upper", "top surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0063] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0064] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A grinding machine, characterized in that, include: Mounting base; A rotary mechanism (20) is rotatably mounted on the mounting base; A grinding wheel holder, the grinding wheel holder including a fixed base (30), the fixed base (30) including a main body (301) and a protrusion (302), the main body (301) including a first side (31), the protrusion (302) being located on the side of the main body (301) opposite to the first side (31), the width of the protrusion (302) gradually decreasing along the direction away from the first side (31), the protrusion (302) including a second side (32) disposed away from the first side (31) and located on the second side (302). 2) The third side (33) and the fourth side (34) on both sides, the first side (31), the second side (32), the third side (33) and the fourth side (34) are all located on the outer periphery of the fixing base (30), the main body (301) also includes a fifth side (35) and a sixth side (36), the fifth side (35) and the sixth side (36) are arranged opposite to each other, the fifth side (35) is connected to the third side (33), and the sixth side (36) is connected to the fourth side (34); An internal grinding assembly (40) is detachably mounted on the second side (32), the third side (33), and the fourth side (34); An external cylindrical grinding assembly (50) is mounted on the first side surface (31); Wherein, the included angle A between the second side (32) and the third side (33) satisfies the relationship 130°≤A≤140°; and / or, the included angle B between the second side (32) and the fourth side (34) satisfies the relationship 130°≤B≤140°; The angle C between the fifth side (35) and the third side (33) satisfies the relationship 130°≤C≤ 140°; and / or, the angle D between the sixth side (36) and the fourth side (34) satisfies the relation 130°≤D≤140°.

2. The grinding machine according to claim 1, characterized in that, The main body (301) includes at least a rectangular body, and the protrusion (302) includes a trapezoidal prism. The rectangular body and the trapezoidal prism are integrally formed.

3. The grinding machine according to claim 1, characterized in that, The internal grinding assembly (40) includes a first internal grinding assembly mounted on the second side surface (32); or, The internal grinding assembly (40) includes two second internal grinding assemblies, which are respectively mounted on the third side (33) and the fourth side (34).

4. The grinding machine according to any one of claims 1 to 3, characterized in that, The internal grinding assembly (40) includes an internal grinding bracket (41), an internal grinding spindle box (42), and an internal grinding wheel (43). One end of the internal grinding bracket (41) is mounted on the protrusion (302), and the other end of the internal grinding bracket (41) is provided with the internal grinding spindle box (42). The internal grinding spindle box (42) is provided with a first spindle (422), and the internal grinding wheel (43) is mounted on the first spindle (422). The external cylindrical grinding assembly (50) includes an external cylindrical grinding spindle box (51) and an external cylindrical grinding wheel (52). The external cylindrical grinding spindle box (51) is mounted on a first side wall. A second spindle (511) is passed through the external cylindrical grinding spindle box (51), and the external cylindrical grinding wheel (52) is mounted on the second spindle (511). The grinding machine also includes a protective cover (60), which is disposed on the outer periphery of the fixed base (30), the inner cylindrical grinding spindle box (42), and the outer cylindrical grinding spindle box (51).

5. The grinding machine according to claim 4, characterized in that, The included angle between the inner grinding support (41) and the axis of the second spindle (511) is 45° or 90°.

6. The grinding machine according to any one of claims 1 to 3, characterized in that, The rotary mechanism (20) includes a circular support platform. Along the height direction of the grinding machine, the projection of the fixed seat (30) is a polygon, and the circumcircle of the polygon is consistent with the outer contour of the circular support platform.

7. The grinding machine according to claim 6, characterized in that, The external cylindrical grinding assembly includes an external cylindrical grinding spindle box (51), which is locked to the first side (31) by fasteners, and the bottom surface of the external cylindrical grinding spindle box (51) overlaps the upper surface of the circular support table.

8. The grinding machine according to any one of claims 1 to 3, characterized in that, The inner cylindrical grinding assembly (40) and the outer cylindrical grinding assembly (50) are spaced apart on the outer periphery of the fixed base (30), and the center of mass of the integral structure formed by the inner cylindrical grinding assembly (40), the outer cylindrical grinding assembly (50) and the fixed base (30) is located on the rotation axis of the rotary mechanism (20).

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