Curved surface five-axis multi-station numerical control rotary sanding machine

Abstract

The utility model discloses a curved surface five-axis multi-station numerical control rotary sanding machine which comprises a base, an X-axis movement mechanism, a Y-axis movement mechanism, a Z-axis movement mechanism, a lifting frame, a turnover frame, a turnover driving device, an abrasive belt polishing assembly and a multi-station workpiece autorotation table. The turnover driving device is arranged on the lifting frame and can drive the turnover frame to conduct turnover motion, and the abrasive belt grinding assembly is arranged on the turnover frame. The overturning frame is driven to overturn through the overturning driving device, then the abrasive belt grinding assembly is driven to rotate, the purpose of adjusting the angle of a grinding working face is achieved, the polishing requirement of an inclined face or a curved face of a workpiece is met by combining action cooperation of the X-axis movement mechanism, the Y-axis movement mechanism, the Z-axis movement mechanism and the multi-station workpiece rotation table, and the application range is wide. And in addition, the abrasive belt of the abrasive belt grinding assembly is used for grinding the workpieces on all the stations at the same time, the consistency of the grinding effect is effectively guaranteed, and the product quality stability is good.

Description

Technical Field

[0001] This utility model relates to the field of grinding and polishing technology, specifically to a curved surface five-axis multi-station CNC rotary sander. Background Technology

[0002] In the processing of everyday hardware parts, it is often necessary to polish the sides of certain parts. To improve the side polishing effect, many side polishing machines have been launched on the market.

[0003] For example, the invention patent with publication number "CN107971900A" entitled "Multi-station CNC Side Polishing Machine" discloses a multi-station CNC side polishing machine. This machine uses a CNC system to control the coordinated operation of a reciprocating motion device, an X-axis motion mechanism, a Y-axis motion mechanism, a height adjustment device, a feed motion mechanism, a workpiece clamping module, and a polishing device to achieve the purpose of grinding and polishing. However, the grinding working surface of the polishing device is at a fixed angle and cannot be adjusted, resulting in a narrow application range and difficulty in meeting the polishing needs of inclined or curved surfaces. Therefore, it is necessary to optimize and improve the existing design to develop a curved surface grinding device that can adjust the angle of the polishing working surface and has a wider range of applications. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a curved surface five-axis multi-station CNC rotary sander with a reasonable structural design and adjustable grinding surface angle.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A curved surface five-axis multi-station CNC rotary sander includes a base, an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism, a lifting frame, a tilting frame, a tilting drive device, a belt sanding assembly, and a multi-station workpiece rotator. The Z-axis motion mechanism is vertically mounted on the base. The lifting frame is mounted on the Z-axis motion mechanism and is driven by it to reciprocate in the Z-axis direction. The two ends of the tilting frame are rotatably mounted on the lifting frame. The tilting drive device is mounted on the lifting frame and can drive the tilting frame to tilt. The belt sanding assembly is mounted on the tilting frame. The X-axis motion mechanism is mounted on the base at a position corresponding to the front of the Z-axis motion mechanism. The multi-station workpiece rotator is mounted on the Z-axis motion mechanism via the Y-axis motion mechanism.

[0007] As a preferred embodiment of this utility model, the lifting frame includes a central frame and two symmetrically arranged support arms at both ends of the central frame, which have good structural stability and can withstand a large load.

[0008] In a preferred embodiment of this utility model, the flipping frame is a rectangular box. One end face of the rectangular box is provided with a rotating shaft, and a bearing seat adapted to the rotating shaft is provided on the corresponding support arm. The other end face of the rectangular box is provided with a flange pipe. The rectangular box structure is stable, capable of supporting the sanding belt assembly, and is easy to install. Its flipping action is flexible and can adapt to sanding needs at different angles.

[0009] As a preferred embodiment of this utility model, the flipping drive device includes a servo motor and a hollow placement platform. The hollow placement platform is installed on the support arm corresponding to the position of the flange pipe. The flange pipe is connected to the rotating table of the hollow placement platform. The servo motor is used to drive the hollow placement platform, thereby driving the flipping frame to flip.

[0010] As a preferred embodiment of this utility model, the belt sanding assembly includes a sanding motor, a drive wheel, a sanding belt, a tension wheel, a tension adjustment device, and several rubber wheels. The rubber wheels are arranged side by side at intervals on the rectangular housing. The tension wheel is located at one side of the rectangular housing via the tension adjustment device. The sanding motor is located at the other side of the rectangular housing. The drive wheel is located on the drive shaft of the sanding motor. The sanding belt winds around the drive wheel, the rubber wheels, and the tension wheel. The drive wheel drives the sanding belt to rotate, achieving the purpose of sanding and polishing.

[0011] As a preferred embodiment of this utility model, the tension adjustment device includes a cylinder mounting base, a tension cylinder, and a wheel frame. The cylinder body of the tension cylinder is fixed on the cylinder mounting base, the wheel frame is mounted on the piston rod of the tension cylinder, and the tension wheel is mounted on the wheel frame. The tension of the sanding belt is adjusted by driving the wheel frame and the tension wheel to move through the cylinder.

[0012] As a preferred embodiment of this utility model, the multi-station workpiece rotary table includes a base, a height frame, a lifting drive device, a rotation positioning device, a rotary platform, and a rotary motor. Several rotary platforms are arranged side by side at intervals on the base. The rotary motor is mounted on the base and drives all rotary platforms to rotate synchronously via a synchronous belt. The height frame is mounted on the base, and the lifting drive device is mounted on the base and can drive the height frame to move up and down relative to the base. Several rotation positioning devices are mounted on the height frame corresponding to the positions of the rotary platforms, and the height frame drives the several rotation positioning devices to adjust their height.

[0013] As a preferred embodiment of this utility model, the self-rotating positioning device includes a positioning cylinder, a pressure seat, and a rubber block. The pressure seat is disposed on the piston rod of the positioning cylinder, and a bearing is provided on the pressure seat. The rubber block is mounted on the bearing of the pressure seat through a rotating shaft, so that the rubber block can rotate while positioning the workpiece.

[0014] As a preferred embodiment of this utility model, the height frame includes a long plate, an inner tube, an outer cylinder, a lead screw, and a nut. The outer cylinder is mounted on the base, the long plate is mounted on the upper end of the inner tube, the lower end of the inner tube is movably inserted into the outer cylinder, the nut is fixed inside the inner tube and cooperates with the lead screw, and one end of the lead screw is connected to the lifting drive device.

[0015] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design. The flipping frame is driven to flip by the flipping drive device, which in turn drives the sanding belt grinding assembly to rotate, so as to adjust the angle of the grinding working surface. Combined with the action coordination of the X-axis motion mechanism, Y-axis motion mechanism, Z-axis motion mechanism and multi-station workpiece rotator, it can meet the polishing requirements of the inclined or curved surface of the workpiece, and has a wide range of applications. Moreover, it uses the sanding belt of the sanding belt grinding assembly to grind the workpieces at each station at the same time, which effectively ensures the consistency of the grinding effect and the good stability of product quality.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the sanding belt grinding component in this utility model.

[0019] Figure 3 This is an exploded structural diagram of the abrasive belt grinding component in this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the multi-station workpiece rotation table in this utility model.

[0021] Figure 5 This is a schematic diagram of the height frame in this utility model.

[0022] Figure 6 This is a schematic diagram of the self-rotating positioning device in this utility model. Detailed Implementation

[0023] See the example. Figures 1 to 6 This embodiment provides a five-axis multi-station CNC rotary sander for curved surfaces, comprising a base 1, an X-axis motion mechanism 2, a Y-axis motion mechanism 3, a Z-axis motion mechanism 4, a lifting frame 5, a tilting frame 6, a tilting drive device 7, a belt sanding assembly 8, and a multi-station workpiece rotary table 9. This embodiment describes a four-station structure. Other embodiments may include three, five, six, or more stations.

[0024] The X-axis motion mechanism 2, Y-axis motion mechanism 3, and Z-axis motion mechanism 4 are all driven by ball screws. The Z-axis motion mechanism 4 is vertically mounted on the base 1, and the lifting frame 5 is mounted on the Z-axis motion mechanism 4 and driven by it to reciprocate in the Z-axis direction. The lifting frame 5 includes a central frame 51 and two symmetrically arranged support arms 52 at both ends of the central frame 51, exhibiting good structural stability and the ability to withstand large loads.

[0025] The two ends of the tilting frame 6 are rotatably mounted on the lifting frame 5. Specifically, the tilting frame 6 is a rectangular box. One end face of the rectangular box is provided with a rotating shaft 61, and a bearing seat 53 adapted to the rotating shaft 61 is provided on the corresponding support arm 52. The other end face of the rectangular box is provided with a flange pipe 62. The rectangular box structure is stable and can support the sanding belt assembly 8. It is easy to install, and the tilting action is flexible, which can adapt to sanding needs at different angles.

[0026] The flipping drive device 7 is mounted on the lifting frame 5 and can drive the flipping frame 6 to perform a flipping motion. Specifically, the flipping drive device 7 includes a servo motor 71 and a hollow placement platform 72. The hollow placement platform 72 is mounted on the support arm 52 at the position corresponding to the flange pipe 62. The flange pipe 62 is connected to the rotary table of the hollow placement platform 72. The servo motor 71 is used to drive the hollow placement platform 72, thereby causing the flipping frame 6 to flip.

[0027] The belt sanding assembly 8 is mounted on the tilting frame 6. Specifically, the belt sanding assembly 8 includes a sanding motor 81, a drive wheel 82, a sanding belt 83, a tension wheel 84, a tension adjustment device 85, and four rubber wheels 86. The four rubber wheels 86 are arranged side-by-side at intervals on the rectangular housing. The tension wheel 84 is positioned at one end of the rectangular housing via the tension adjustment device 85. The tension adjustment device 85 includes a cylinder mounting base 851, a tension cylinder 852, and a wheel frame 853. The cylinder body of the tension cylinder 852 is fixed to the cylinder mounting base 851. The wheel frame 853 is mounted on the piston rod of the tension cylinder 852, and the tension wheel is mounted on the wheel frame 853. The tension of the sanding belt 83 is adjusted by moving the wheel frame 853 and the tension wheel 84 driven by the cylinder. The grinding motor 81 is located on the side of the other end of the rectangular box. The drive wheel 82 is located on the drive shaft of the grinding motor 81. The sanding belt 83 is wound around the drive wheel 82, the rubber wheel 86 and the tension wheel 84. The drive wheel 82 drives the sanding belt 83 to rotate to achieve the purpose of grinding and polishing.

[0028] The X-axis motion mechanism 2 is positioned on the base 1 in front of the Z-axis motion mechanism 4, and the multi-station workpiece rotary table 9 is mounted on the Z-axis motion mechanism 4 via the Y-axis motion mechanism 3. The multi-station workpiece rotary table 9 is driven by the X-axis motion mechanism 2 and the Y-axis motion mechanism 3 to reciprocate in the X and Y axis directions.

[0029] The multi-station workpiece rotating table 9 includes a base 91, a height frame 92, a lifting drive device 93, a rotation positioning device 94, a rotating platform 95, and a rotating motor 96. The four rotating platforms 95 are arranged side by side at intervals on the base 91. The rotating motor 96 is mounted on the base 91 and drives all rotating platforms 95 to rotate synchronously via a synchronous belt. The height frame 92 is mounted on the base 91.

[0030] The lifting drive device 93 is mounted on the base 91 and can drive the height frame 92 to move up and down relative to the base 91. See also Figure 5 The height frame 92 includes a long plate 921, an inner tube 922, an outer cylinder 923, a lead screw 924, and a nut 925. The outer cylinder 923 is mounted on the base 91. The long plate 921 is located at the upper end of the inner tube 922, and the lower end of the inner tube 922 is movably inserted into the outer cylinder 923. The nut 925 is fixed inside the inner tube 922 and cooperates with the lead screw 924. One end of the lead screw 924 is connected to the lifting drive device 93. The lifting drive device 93 includes a lifting motor 931, a linkage shaft 932, and a belt drive assembly 933. The lifting motor 931 drives the linkage shaft 932 to rotate via the belt drive assembly 933. The two ends of the linkage shaft 932 drive the lead screw 924 to rotate via a worm gear reducer 934.

[0031] Four self-rotating positioning devices 94 are positioned on the long plate 921 corresponding to the positions of the rotating platform 95. (See also...) Figure 6 The self-rotating positioning device 94 includes a positioning cylinder 941, a pressure seat 942, and a rubber block 943. The pressure seat 942 is disposed on the piston rod of the positioning cylinder 941. The pressure seat 942 is provided with a mounting cavity for mounting a bearing 944. The bearing 944 is located in the mounting cavity and is positioned by a retaining ring 946. The rubber block 943 is mounted on the bearing 944 of the pressure seat 942 via a rotating shaft 945, so that the rubber block 943 can rotate while positioning the workpiece.

[0032] During operation, the workpiece is placed on the rotating platform 95. The lifting drive device 93 drives the height frame 92 to descend to a predetermined height, and the self-rotating positioning device 94 presses down to position the workpiece on the rotating platform 95. During grinding, the grinding angle of the sanding belt grinding assembly 8 can be adjusted according to the side shape of the workpiece. With the coordinated actions of the X-axis motion mechanism 2, Y-axis motion mechanism 3, and Z-axis motion mechanism 4, the polishing requirements of the inclined or curved surfaces of the workpiece can be met. Since the workpieces at each station are ground by the same sanding belt, the consistency of the grinding effect is effectively ensured, resulting in good product quality stability. After polishing, when it is necessary to remove the workpiece, the self-rotating positioning device 94 is controlled to return to its original position to release the workpiece, making it easy to remove the ground workpiece. Then, the workpiece to be ground is loaded. The entire loading and unloading process does not require adjustment of the height frame 92, making operation simple and convenient.

[0033] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Other edge grinding machines that are the same as or similar to these machines are all within the protection scope of this utility model.

Claims

1. A curved surface five-axis multi-station CNC rotary sander, comprising a base, an X-axis motion mechanism, a Y-axis motion mechanism, and a Z-axis motion mechanism, characterized in that, It also includes a lifting frame, a tilting frame, a tilting drive device, a belt sanding assembly, and a multi-station workpiece rotator. The Z-axis motion mechanism is vertically mounted on the base. The lifting frame is mounted on the Z-axis motion mechanism and is driven by it to reciprocate in the Z-axis direction. The two ends of the tilting frame are rotatably mounted on the lifting frame. The tilting drive device is mounted on the lifting frame and can drive the tilting frame to tilt. The belt sanding assembly is mounted on the tilting frame. The X-axis motion mechanism is mounted on the base at the front position corresponding to the Z-axis motion mechanism. The multi-station workpiece rotator is mounted on the Z-axis motion mechanism via a Y-axis motion mechanism.

2. The curved surface five-axis multi-station CNC rotary sander according to claim 1, characterized in that: The lifting frame includes a central frame and two symmetrically arranged support arms at both ends of the central frame.

3. The curved surface five-axis multi-station CNC rotary sander according to claim 2, characterized in that: The tilting frame is a rectangular box. One end of the rectangular box is provided with a rotating shaft, and a bearing seat adapted to the rotating shaft is provided on the corresponding support arm. The other end of the rectangular box is provided with a flange pipe.

4. The curved surface five-axis multi-station CNC rotary sander according to claim 3, characterized in that: The flipping drive device includes a servo motor and a hollow placement platform. The hollow placement platform is mounted on the support arm corresponding to the position of the flange pipe. The flange pipe is connected to the rotary table of the hollow placement platform. The servo motor is used to drive the hollow placement platform.

5. The curved surface five-axis multi-station CNC rotary sander according to claim 3, characterized in that: The belt sanding assembly includes a sanding motor, a drive wheel, a sanding belt, a tension wheel, a tension adjustment device, and several rubber wheels. The rubber wheels are arranged side by side at intervals on the rectangular housing. The tension wheel is located at one side of the rectangular housing via the tension adjustment device. The sanding motor is located at the other side of the rectangular housing. The drive wheel is mounted on the drive shaft of the sanding motor. The sanding belt passes around the drive wheel, the rubber wheels, and the tension wheel.

6. The curved surface five-axis multi-station CNC rotary sander according to claim 5, characterized in that: The tension adjustment device includes a cylinder mounting base, a tension cylinder, and a wheel frame. The cylinder body of the tension cylinder is fixed on the cylinder mounting base, the wheel frame is mounted on the piston rod of the tension cylinder, and the tension wheel is mounted on the wheel frame.

7. The curved surface five-axis multi-station CNC rotary sander according to claim 1, characterized in that: The multi-station workpiece rotary table includes a base, a height frame, a lifting drive device, a rotation positioning device, a rotary platform, and a rotary motor. Several rotary platforms are arranged side by side at intervals on the base. The rotary motor is mounted on the base and drives all rotary platforms to rotate synchronously via a synchronous belt. The height frame is mounted on the base. The lifting drive device is mounted on the base and can drive the height frame to move up and down relative to the base. Several rotation positioning devices are mounted on the height frame corresponding to the positions of the rotary platforms.

8. The curved surface five-axis multi-station CNC rotary sander according to claim 7, characterized in that: The self-rotating positioning device includes a positioning cylinder, a pressure seat, and a rubber block. The pressure seat is mounted on the piston rod of the positioning cylinder and has a bearing. The rubber block is mounted on the bearing of the pressure seat via a rotating shaft.

9. The curved surface five-axis multi-station CNC rotary sander according to claim 7, characterized in that: The height frame includes a long plate, an inner tube, an outer cylinder, a lead screw, and a nut. The outer cylinder is mounted on a base, the long plate is positioned at the upper end of the inner tube, the lower end of the inner tube is movably inserted into the outer cylinder, the nut is fixed inside the inner tube and cooperates with the lead screw, and one end of the lead screw is connected to the lifting drive device.

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