Five-axis numerical control grinding machine spindle with high stability and precision

Abstract

The five-axis numerical control grinding machine spindle comprises a main motor, the lower end of the main motor is fixedly connected with a triangular supporting seat, the right side of an output shaft is fixedly connected with a belt groove block, the upper end of the belt groove block is provided with a second belt groove block, and the right side of the center position of the second belt groove block is fixedly connected with a transmission shaft. The lower end of the bearing box is fixedly connected with a spindle supporting block, and the left side of the front end of the spindle supporting block is fixedly connected with two sets of stable motors. The right sides of output shafts of the stabilizing motors are fixedly connected with screws, the screws are movably connected with the grinding assembly, the screws are movably connected with the cooling mechanism, a belt groove block and a second belt groove block are arranged, then three sets of identical closed belts are used for enabling a transmission shaft to rotate more stably and accurately, and a sawtooth face in a main shaft clamping block can clamp a cutter more stably; through stable grinding of the grinding assembly and wind cooling of the cooling mechanism, high grinding precision and good cooling effect are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC grinder spindles, in particular to a five-axis CNC grinder spindle with stable precision. Background Art

[0002] A CNC grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece through CNC technology, and a five-axis CNC grinder is a grinder composed of axial devices in five directions. Through the mutual cooperation of the axial devices in the five directions, on the one hand, the position between the grinding mechanism and the grinding workpiece is adjusted, and on the other hand, grinding power is provided, so as to fully grind the grinding workpiece. However, the stability of the upper end of the spindle directly affects the accuracy of the overall tool grinding. In many existing technologies, in order to pursue flexible grinding, the stability of the entire machine is poor and the frequency of maintenance is too high.

[0003] Patent No. CN201820105264.7 discloses a five-axis five-linkage CNC tool grinder, which has a bed, an X-moving part and a column installed on the bed, a Y-moving part installed on the X-moving part to form a cross slide, and a rotating spindle installed on the Y-moving part; a Z-moving part is installed on the column, and an electric spindle is installed on the Z-moving part; the electric spindle is installed opposite to the rotating spindle; the column is installed on the bed corner opposite to the rotating spindle, and the angle between the column and the edge of the bed is less than 90°. By adopting a reasonable layout, the length of the machinable workpiece is increased; the mutual interference problem between workpiece processing and loading is reduced, but the spindle of the grinder has the following problems: first, the placement stability of the grinding component at the upper end of the spindle is poor, and the adjustment angle is not accurate. Secondly, the ground chips are easily left on the tool surface, affecting the overall grinding accuracy. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By setting a belt groove block and a second belt groove block, and then using three groups of identical closed belts, the rotation of the transmission shaft is made more stable and accurate, and the serrations in the spindle clamping block can also clamp the tool more stably. Through the stable grinding of the grinding assembly and the wind cooling of the cooling mechanism, the technical problems of poor grinding stability, poor grinding accuracy, debris and grinding oil remaining on the tool body, and poor cooling effect in the prior art are solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A five-axis CNC grinding machine spindle with high stability and precision, comprising a main motor, wherein the lower end of the main motor is fixedly connected to a triangular support seat, and an output shaft is arranged on the right side of the main motor, and the right side of the output shaft is fixedly connected to a belt groove block, and the surface of the belt groove block is provided with three groups of identical grooves, and each of the grooves is provided with a closed belt, and the upper end of the closed belt is connected to a No. 2 belt groove block, and the right side of the center position of the No. 2 belt groove block is fixedly connected to a transmission shaft, and the right end of the transmission shaft is fixedly connected to a spindle clamping block, and the bearing at the center position of the transmission shaft is connected to a bearing box, and the lower end of the bearing box is fixedly connected to a spindle support block, and the left side of the front end of the spindle support block is fixedly connected to two groups of stable motors, and the left and right sides of the lower end of the spindle support block are fixedly connected to the same supporting feet;

[0007] A stable motor, wherein an output shaft is arranged on the right side of the stable motor, a screw is fixedly connected to the right side of the output shaft of the stable motor, the screw at the lower end is movably connected to the grinding assembly, and the screw at the upper end is movably connected to the cooling mechanism.

[0008] As a preferred embodiment, the transmission shaft is hollow inside, and a clamping hole is opened at the center position of the main shaft clamping block, the clamping hole is connected to the internal space of the transmission shaft, three groups of clamping grooves are evenly arranged on the outside of the clamping hole, the electric slider is movably connected in the clamping groove, and the electric slider is provided with a serrated surface on the side close to each other.

[0009] As a preferred embodiment, the grinding assembly includes a movable block, which is movably connected to a screw rod, and the front end of the movable block is fixedly connected to a horizontal plate, the upper end of the horizontal plate is fixedly connected to a movable slider, the lower sides of the front and rear ends of the movable slider are fixedly connected to an L-shaped slider, and step plates are provided on the upper ends of the left and right sides of the movable slider, the left and right sides of the step plates are movably connected to support electric sliders, the upper end of the supporting electric slider is fixedly connected to a protective cover, a grinding motor is provided inside the protective cover, an output shaft is provided at the left end of the grinding motor, and the left side of the output shaft of the grinding motor is fixedly connected to a grinding sheet.

[0010] As a preferred embodiment, the cooling mechanism includes a No. 2 movable block, the front end of the No. 2 movable block is fixedly connected to the No. 2 cross plate, and the center position of the No. 2 movable block is movably connected to the screw, the rear side of the No. 2 cross plate is fixedly connected to the L-shaped connecting block, the rear side of the L-shaped connecting block is fixedly connected to the cooling slider, the lower side of the cooling slider is slidably connected to the cooling support plate, and a fan cover is provided at the center position of the upper end of the cooling slider, a fan motor is provided in the fan cover, an output shaft is provided on the left side of the fan motor, and the left side of the fan motor output shaft is fixedly connected to the fan.

[0011] Preferably, a ventilation hole is provided at the center of the right side of the fan cover, and the fan and the fan motor are both arranged inside the fan cover, and a hole is hollowed out at the center of the left side of the fan cover, and the diameter of the hole is the same as the diameter of the fan.

[0012] As another preferred embodiment, V-shaped connecting blocks are evenly arranged at the center of the spindle support block, and the center of the spindle support block is connected from top to bottom. The support foot includes a support box body, and rubber shock-absorbing discs are arranged at the four end points of the lower end of the support box body.

[0013] Beneficial effects of the utility model:

[0014] (1) In the utility model, a belt groove block and a second belt groove block are provided, and three groups of grooves are provided on the belt groove block and the second belt groove block, and three groups of identical closed belts are used to drive the transmission shaft to rotate, so that the spindle clamping block can rotate more stably, and the serrated surface provided on the spindle clamping block can increase the friction with the clamped tool, ensuring high overall clamping stability, strong rotation stability, and higher overall tool precision.

[0015] (2) In the utility model, a grinding assembly is set up, a screw and a movable block are used to drive the grinding motor to adjust the left and right position, a step plate and an L-shaped slider are used to limit the front and rear position to prevent the movable slider from shifting during the left and right movement, and then the front and rear position of the grinding sheet is adjusted. Even during the grinding process, the entire grinding assembly will not be damaged due to vibration. The utility model is cheap, has a simple structural principle, and is highly practical.

[0016] (3) In the utility model, a cooling mechanism is provided, and a fan motor is used to drive the fan to rotate, thereby generating wind force to blow away the contact position between the tool and the grinding sheet. In addition, a cutting fluid is provided at the contact position between the tool and the grinding sheet for spraying. The blowing of wind force can also reduce the amount of debris left on the surface of the tool body by the cutting fluid. The cooling mechanism can also move left and right to work in different situations. The closer to the spindle clamping block, the better the chip removal and cooling effect on the surface of the tool body. The farther away from the spindle clamping block, the better the heat dissipation inside the entire grinder.

[0017] In summary, the equipment has the advantages of high stability, higher precision in producing cutting tools, the vibration generated by grinding will not affect the installation and activity of the grinding components, the number and frequency of maintenance are reduced, the labor cost is greatly reduced, and the cooling effect is good. It is especially suitable for the field of CNC grinder spindle technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the belt groove block and the second belt groove block in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the main shaft clamping block in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the V-shaped connecting block in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the grinding assembly in the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] like Figures 1 to 5 As shown, the utility model provides a five-axis CNC grinding machine spindle with high stability and precision, including a main motor 1, the lower end of the main motor 1 is fixedly connected to a triangular support seat 11, and an output shaft is arranged on the right side of the main motor 1, the right side of the output shaft is fixedly connected to a belt groove block 2, the surface of the belt groove block 2 is provided with three groups of identical grooves 21, and the grooves 21 are each provided with a closed belt 3, the upper end of the closed belt 3 is connected to a No. 2 belt groove block 4, the No. 2 belt groove block 4 is fixedly connected to a transmission shaft 41 on the right side of the center position, the right end of the transmission shaft 41 is fixedly connected to a spindle clamping block 5, and the center position bearing of the transmission shaft 41 is connected to a bearing box 6, the lower end of the bearing box 6 is fixedly connected to a spindle support block 7, the front end left side of the spindle support block 7 is fixedly connected to two groups of stable motors 8, and the left and right sides of the lower end of the spindle support block 7 are fixedly connected to the same support feet 71;

[0027] A stabilizing motor 8 is provided with an output shaft on the right side of the stabilizing motor 8. The right side of the output shaft of the stabilizing motor 8 is fixedly connected with a screw rod 81. The lower end of the screw rod 81 is movably connected with the grinding assembly 10. The upper end of the screw rod 81 is movably connected with the cooling mechanism 9.

[0028] Furthermore, the transmission shaft 41 is hollow inside, and a clamping hole 51 is opened at the center position of the spindle clamping block 5. The clamping hole 5 is connected to the internal space of the transmission shaft 41. Three groups of clamping grooves 52 are evenly arranged on the outside of the clamping hole 51. The clamping grooves 52 are movably connected to an electric slider 53. The electric sliders 53 are provided with a serrated surface 54 on one side close to each other. The electric slider 53 is used to clamp different types of tools. The setting of the serrated surface 54 makes the tool more stable when clamped.

[0029] Further, the grinding assembly 10 includes a movable block 101, the movable block 101 is movably connected to the screw rod 81, and the front end of the movable block 101 is fixedly connected to the cross plate 102, the upper end of the cross plate 102 is fixedly connected to the moving slider 103, the lower side of the front and rear ends of the moving slider 103 is fixedly connected to the L-shaped slider 104, and the upper ends of the left and right sides of the moving slider 103 are provided with step plates 105, the left and right sides of the step plates 105 are movably connected to the supporting electric slider 106, the upper end of the supporting electric slider 106 is fixedly connected to the protective cover 107, the protective cover 107 is provided with a grinding motor 108 inside, and the left end of the grinding motor 108 is provided with Output shaft, the left side of the output shaft of the grinding motor 108 is fixedly connected to the grinding plate 109, when the stabilizing motor 8 at the lower end starts to work, it drives the screw 81 at the lower end to rotate, so that the movable block 101 can stably slide on the screw 81, and the overall front and rear positions of the entire grinding assembly 10 are limited, which effectively prevents the vibration generated during the grinding process from causing the grinding assembly 10 to shift, ensuring higher overall grinding accuracy, and then the supporting electric slider 106 can slide on the step plate 105, thereby driving the grinding motor 108 to move forward and backward on the upper end surface of the movable slider 103, so as to adapt to the position of the tool for grinding, the principle is simple and practical.

[0030] Further, the cooling mechanism 9 includes a second movable block 91, the front end of the second movable block 91 is fixedly connected to the second cross plate 92, and the center position of the second movable block 91 is movably connected to the screw 81, the rear side of the second cross plate 92 is fixedly connected to the L-shaped connecting block 93, the rear side of the L-shaped connecting block 93 is fixedly connected to the cooling slide block 94, the lower side of the cooling slide block 94 is slidably connected to the spindle support block 7, and a fan cover 96 is provided at the center position of the upper end of the cooling slide block 94, a fan motor 97 is provided in the fan cover 96, an output shaft is provided on the left side of the fan motor 97, and a fan 98 is fixedly connected to the left side of the output shaft of the fan motor 97, and the upper end of the stabilizing motor 8 starts to work and drives the upper end of the screw 81 to rotate, so that the second movable block 91 can stably slide on the screw 81, drive the cooling slide block 94 to slide on the spindle support block 7, and adjust the position of the fan 98 to the tool. The closer to the tool, the better the cooling effect on the tool body, and the farther from the tool, the better the heat dissipation effect on the entire five-axis CNC grinder, thereby extending the service life of the device.

[0031] Furthermore, a ventilation hole 961 is provided at the center position of the right side of the fan cover 96, and the fan 98 and the fan motor 97 are both arranged inside the fan cover 96, and a hole is hollowed out at the center position of the left side of the fan cover 96, and the diameter of the hole is the same as the diameter of the fan 98. The ventilation hole 961 is provided to facilitate the operation of the fan 98, and the fan cover 96 is provided to prevent excess cutting fluid from interfering with the operation of the fan motor 97.

[0032] Furthermore, V-shaped connecting blocks 72 are evenly arranged at the center position of the spindle support block 7, and the center position of the spindle support block 7 is penetrated from top to bottom. The support foot 71 includes a support box 73, and the four ends of the lower end of the support box 73 are provided with rubber shock-absorbing discs 74. The center position of the spindle support block 7 is penetrated from top to bottom, which is convenient for the falling of debris and the outflow of cutting fluid, and can also be more convenient for subsequent recycling and processing, reducing the debris and cutting fluid remaining on the workpiece body and affecting the overall accuracy; the support foot 71 is to reduce the impact of ground vibration on the entire CNC grinder.

[0033] Working process: first, place the tool to be ground in the clamping hole 51, the electric slider 53 begins to close and use the serrated surface 54 to increase the friction with the tool body, so as to stably clamp the tool, the stabilizing motor 8 starts to work, driving the grinding assembly 10 to approach the tool position, and then use the supporting electric slider 106 to grind the front and rear positions of the motor 108, so as to contact and grind with the tool, with high overall precision, the cooling mechanism fluid adjusts the position and distance with the tool as the stabilizing motor 8 works, so that while the entire CNC grinder is dissipating heat, it can also cool the tool surface, reducing the debris and cutting fluid remaining on the tool surface, affecting the grinding accuracy;

[0034] The main motor 1 works, and the belt groove block 2 and the second belt groove block 4 are used to stably rotate the transmission shaft 41, ensuring that when the tool is grinding one side, the angle position can be adjusted more accurately and stably. The entire structure has high precision and strong stability, which reduces the frequency of manual maintenance and greatly reduces labor costs and machine maintenance costs.

[0035] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0036] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A five-axis CNC grinding machine spindle with stable and high precision, characterized by: include A main motor (1), wherein the lower end of the main motor (1) is fixedly connected to a triangular support seat (11), and an output shaft is arranged on the right side of the main motor (1), and the right side of the output shaft is fixedly connected to a belt groove block (2), and the surface of the belt groove block (2) is provided with three groups of identical grooves (21), and each of the grooves (21) is provided with a closed belt (3), and the upper end of the closed belt (3) is connected to a No. 2 belt groove block (4), and the right side of the center position of the No. 2 belt groove block (4) is fixedly connected to a transmission shaft (41), and the right side end of the transmission shaft (41) is fixedly connected to a spindle clamping block (5), and the center position bearing of the transmission shaft (41) is connected to a bearing box (6), and the lower end of the bearing box (6) is fixedly connected to a spindle support block (7), and the left side of the front end of the spindle support block (7) is fixedly connected to two groups of stabilizing motors (8), and the left and right sides of the lower end of the spindle support block (7) are fixedly connected to identical support feet (71); A stabilizing motor (8) is provided with an output shaft on the right side of the stabilizing motor (8), a screw rod (81) is fixedly connected to the right side of the output shaft of the stabilizing motor (8), the screw rod (81) at the lower end is movably connected to the grinding assembly (10), and the screw rod (81) at the upper end is movably connected to the cooling mechanism (9).

2. The five-axis CNC grinding machine spindle with stable and high precision according to claim 1 is characterized in that: The transmission shaft (41) is hollow inside, and a clamping hole (51) is provided at the center of the main shaft clamping block (5), the clamping hole (51) is communicated with the internal space of the transmission shaft (41), three groups of clamping grooves (52) are evenly arranged outside the clamping hole (51), an electric slider (53) is movably connected inside the clamping groove (52), and a serrated surface (54) is provided on one side of the electric slider (53) close to each other.

3. The five-axis CNC grinding machine spindle with stable and high precision according to claim 1 is characterized in that: The grinding assembly (10) comprises a movable block (101), the movable block (101) is movably connected to a screw rod (81), and the front end of the movable block (101) is fixedly connected to a transverse plate (102), the upper end of the transverse plate (102) is fixedly connected to a movable slider (103), the lower sides of the front and rear ends of the movable slider (103) are fixedly connected to an L-shaped slider (104), and the upper ends of the left and right sides of the movable slider (103) are provided with step plates (105), the left and right sides of the step plates (105) are movably connected to a supporting electric slider (106), the upper end of the supporting electric slider (106) is fixedly connected to a protective cover (107), a grinding motor (108) is provided inside the protective cover (107), the left end of the grinding motor (108) is provided with an output shaft, and the left side of the output shaft of the grinding motor (108) is fixedly connected to a grinding sheet (109).

4. The five-axis CNC grinding machine spindle with stable and high precision according to claim 1 is characterized in that: The cooling mechanism (9) comprises a second movable block (91), the front end of the second movable block (91) is fixedly connected to the second transverse plate (92), and the center position of the second movable block (91) is movably connected to the screw rod (81), the rear side of the second transverse plate (92) is fixedly connected to the L-shaped connecting block (93), the rear side of the L-shaped connecting block (93) is fixedly connected to the cooling slider (94), the lower side of the cooling slider (94) is slidably connected to the main shaft support block (7), and a fan cover (96) is provided at the center position of the upper end of the cooling slider (94), a fan motor (97) is provided in the fan cover (96), an output shaft is provided on the left side of the fan motor (97), and a fan (98) is fixedly connected to the left side of the output shaft of the fan motor (97).

5. The five-axis CNC grinding machine spindle with stable and high precision according to claim 4 is characterized in that: A ventilation hole (961) is provided at the center position of the right side of the fan cover (96), and the fan (98) and the fan motor (97) are both arranged inside the fan cover (96), and a hole is hollowed out at the center position of the left side of the fan cover (96), and the diameter of the hole is the same as the diameter of the fan (98).

6. The five-axis CNC grinding machine spindle with stable and high precision according to claim 1, characterized in that: The center position of the spindle support block (7) is evenly provided with V-shaped connecting blocks (72), and the center position of the spindle support block (7) is connected from top to bottom. The support foot (71) includes a support box (73), and the four end points of the lower end of the support box (73) are all provided with rubber shock-absorbing discs (74).

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