A grinding machine for automatically grinding flat surfaces and knife edges at one time

Abstract

The present invention is a one-time automatic grinding machine for grinding planes and blades, comprising a frame, an X-axis support seat is fixedly installed on the top surface of the frame, an X-axis screw bearing is fixedly installed on the X-axis support seat, an X-axis screw bearing is rotatably provided with an X-axis screw, an X-axis servo motor is also fixedly installed at one end of the X-axis support seat, the X-axis servo motor drives the X-axis screw to rotate, an X-axis screw nut is also sleeved on the X-axis screw, a pair of X-axis linear guides are also fixedly installed on both sides of the frame located on the X-axis support seat, and a grinding head base is slidably mounted on the X-axis linear guide. The rotation accuracy of the spindle of the present invention can reach within 1μ, and the motor rotor is directly installed on the spindle, avoiding vibration and error caused by the coupling connection of the motor.

Description

Technical Field

[0001] The invention relates to the field of numerically controlled grinding machines, in particular to a grinding machine capable of automatically grinding a surface and a knife edge at one time. Background Art

[0002] In the past, when grinding workpieces with angled blades, three devices were generally used: one for grinding the front and back surfaces, one for grinding the first blade angle, and one for grinding the back blade angle. This required at least three people, and the equipment occupied a large area and was bulky. In addition, the existing grinders all have a single angle processing table. After processing the horizontal surface of the workpiece that needs to be processed on multiple sides, the workpiece needs to be removed and transferred to the inclined surface processing table for further processing. This not only requires the replacement of different processing fixtures, but also has relatively low precision and low processing efficiency. Summary of the invention

[0003] The object of the present invention is to provide a grinding machine for automatically grinding a surface and a knife edge at one time, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A one-time automatic grinding machine for plane and blade grinding comprises a frame, an X-axis support seat is fixedly mounted on the top surface of the frame, an X-axis screw bearing is fixedly mounted on the X-axis support seat, an X-axis screw bearing is rotatably arranged on the X-axis screw bearing, an X-axis servo motor is also fixedly mounted on one end of the X-axis support seat, the X-axis servo motor drives the X-axis screw to rotate, an X-axis screw nut is also sleeved on the X-axis screw, a pair of X-axis linear guides are also fixedly mounted on both sides of the frame located on the X-axis support seat, a grinding head base is slidably mounted on the X-axis linear guide, a connecting plate is formed on the bottom surface of the grinding head base, the connecting plate is fixed on the X-axis screw nut, a pair of Z-axis linear guides are fixedly mounted on the top surface of the grinding head base, and a Z-axis screw is also fixedly mounted between the middle and upper parts of the pair of Z-axis linear guides Bearing, a Z-axis screw is rotatably arranged on the Z-axis screw bearing, a Z-axis servo motor is also fixedly installed on the top of the Z-axis screw bearing, the Z-axis servo motor drives the Z-axis screw to rotate, a Z-axis screw nut is also sleeved on the Z-axis screw, a grinding head suspension is fixedly installed on the Z-axis screw nut, the grinding head suspension extends downward to the lower edge of the Z-axis screw, a liquid static pressure bearing sleeve is also fixedly installed on the lower part of the grinding head suspension, a main shaft is rotatably arranged in the liquid static pressure bearing sleeve, liquid static pressure bearing sleeves are extended from both ends of the main shaft, a grinding wheel is installed at one end of the main shaft, a motor rotor is fixedly installed at the other end of the main shaft, the liquid static pressure bearing sleeve is located on the side of the main shaft where the motor rotor is installed, and a motor stator housing is also fixedly installed, and the motor stator housing covers the end of the main shaft where the motor rotor is installed.

[0006] Preferably, the bottom end of the Z-axis lead screw is located at 1 / 2 of the height of the Z-axis linear guide rail.

[0007] Preferably, a diamond pen disposed upward is fixedly mounted on the top surface of the frame at a position directly below the side of the hydrostatic bearing sleeve close to the grinding wheel.

[0008] Preferably, the diamond pens have two, one of which is arranged vertically upward, and the other is arranged obliquely toward the Z-axis screw rod.

[0009] Preferably, the cross-section of the grinding head suspension body is in an inverted T shape, and the side of the spindle on which the grinding wheel is installed and the side on which the motor rotor is installed are respectively located on both sides of the Z-axis linear guide rail.

[0010] Preferably, a workbench and a workpiece supporting mechanism are also provided on the side of the frame close to the grinding wheel, a bearing seat is fixedly installed on the top surface of the workbench, a horizontal rotating shaft is rotatably installed in the bearing seat, a supporting seat is fixedly installed on the horizontal rotating shaft, a through hole is opened in the middle of the supporting seat and an opening is opened on one side, a workpiece supporting mechanism is set up at the through hole position of the supporting seat, the workpiece supporting mechanism includes a sleeve fixedly installed at the through hole position of the supporting seat and a vertical rotating shaft rotatably installed in the sleeve, an electromagnetic suction cup is fixedly installed on the top of the vertical rotating shaft, a conductive slip ring is fixedly installed on the bottom end of the vertical rotating shaft, a large pulley is fixedly installed on the vertical rotating shaft located on the upper part of the conductive slip ring, a vertical servo motor is fixedly installed on the side of the opening of the supporting seat on the workbench, and the output shaft of the vertical servo motor is driven by a multi-V belt The large pulley rotates, and a side horizontal bearing seat is fixedly installed on the side wall of one side of the workbench, and a side horizontal rotating shaft is rotatably installed in the side horizontal bearing seat, and a linear guide rail is fixedly installed on the side horizontal rotating shaft, and a screw rod fixing seat is also fixedly installed on the linear guide rail, and a screw rod is rotatably installed on the screw rod fixing seat, and a turbine reducer is fixedly installed on the bottom end of the screw rod. The workbench is located below the side horizontal rotating shaft and a horizontal servo motor is also fixedly installed, which drives the turbine reducer to rotate. A screw rod nut is sleeved on the screw rod, and a slide plate is fixedly installed on the screw rod nut. A sliding block matching the linear guide rail is formed on the side of the slide plate facing the linear guide rail, and rotating shafts are fixedly installed on both ends of the slide plate, and a rotating shaft seat is also formed on the side of the support seat close to the linear guide rail, and the rotating shaft is rotatably arranged in the rotating shaft seat.

[0011] Preferably, a groove is formed on the top surface of the workbench at a position directly below the workpiece supporting mechanism.

[0012] Preferably, the axis lines of the horizontal rotation axis, the side horizontal rotation axis and the rotation axis are parallel to each other.

[0013] Preferably, it also includes an angle sensor fixed on one side of the top surface of the workbench, one end of the angle sensor extends into one end of a clamping coupling, and the other end of the clamping coupling is provided with an angle sensor connecting shaft, and the angle sensor connecting shaft is fixed on the side wall of the support seat.

[0014] Preferably, the axis lines of the angle sensor connecting axis and the horizontal rotation axis are parallel to each other.

[0015] The present invention adopts a sleeve-type rotor integrated processing method for the spindle. After the spindle is semi-finished, the motor rotor blank is installed on the spindle, and the outer surface of the motor rotor and the outer circle of the spindle are processed together. The outer circle runout can be controlled within 0.5μ. The spindle greatly reduces the vibration and wear caused by the relative movement of the metal rigid body contact through the non-contact characteristics of the hydrostatic oil film. The hydrostatic bearing can not only greatly improve the operation accuracy, but also relatively improve the service life of the spindle. The high-pressure hydraulic oil is injected into the copper alloy hydrostatic oil cavity, so that the spindle is suspended in the middle of the oil cavity. Regardless of whether the spindle is started, rotated or stopped, the spindle and the sleeve are always in a non-contact state. It has the characteristics of high precision, high rigidity, high bearing capacity and long service life. Since the hydrostatic oil film has the effect of error averaging, the spindle The rotation accuracy can reach within 1μ, and the motor rotor is directly installed on the main shaft, avoiding the vibration and error of the motor caused by the coupling connection. A support seat is designed, one side of the support seat is rotatably set on the workbench through a horizontal rotating shaft, and the other side of the support seat is set on the slide through the rotating shaft seat, so that the inclination angle of the support seat can be changed by moving the slide up and down, and the electromagnetic suction cup installed on the top of the vertical rotating shaft and the conductive slip ring installed on the bottom can make the workpiece adsorbed on the electromagnetic suction cup through magnetic attraction. It is not only convenient to operate, but also can process the horizontal and inclined surfaces of the workpiece at one time without changing the tooling fixture. The angle of the support seat is monitored in real time by the angle sensor, so as to control the output of the horizontal servo motor and ensure that the angle of the support seat is maintained at the angle required for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present invention after the frame is removed;

[0017] Figure 2 This is a cross-sectional view of the present invention after the frame is removed;

[0018] Figure 3 This is a side view of the present invention after removing the frame;

[0019] Figure 4 This is a cross-sectional view of the present invention after removing the workbench;

[0020] Figure 5 It is a structural schematic diagram of the present invention.

[0021] In the figure: 1, workbench, 2, bearing seat, 3, horizontal shaft, 4, support seat, 5, sleeve, 6, vertical shaft, 7, electromagnetic chuck, 8, conductive slip ring, 9, large pulley, 10, vertical servo motor, 11, multi-V belt, 12, side horizontal bearing seat, 13, side horizontal shaft, 14, linear guide, 15, screw fixing seat, 16, screw, 17, turbine reducer, 18, horizontal servo motor, 19, screw nut, 20, slide plate, 21, shaft, 22, shaft seat, 23, angle sensor, 24, clamp Tight coupling, 25. Angle sensor connecting shaft, 26. Frame, 27. X-axis support seat, 28. X-axis lead screw, 29. X-axis servo motor, 30. X-axis lead screw nut, 31. X-axis linear guide, 32. Grinding head base, 33. Connecting plate, 34. Z-axis linear guide, 35. Z-axis lead screw, 36. Z-axis servo motor, 37. Z-axis lead screw nut, 38. Grinding head suspension, 39. Liquid hydrostatic bearing sleeve, 40. Spindle, 41. Grinding wheel, 42. Motor rotor, 43. Motor stator housing, 44. Diamond pen. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3 , the present invention provides a technical solution:

[0024] A one-time automatic grinding machine for grinding planes and knife edges includes a frame 26, an X-axis support seat 27 is fixedly installed on the top surface of the frame 26, an X-axis screw bearing is fixedly installed on the X-axis support seat 27, an X-axis screw bearing is rotatably provided with an X-axis screw 28, an X-axis servo motor 29 is also fixedly installed at one end of the X-axis support seat 27, the X-axis servo motor 29 drives the X-axis screw 28 to rotate, an X-axis screw nut 30 is also sleeved on the X-axis screw 28, a pair of X-axis linear guides 31 are also fixedly installed on both sides of the X-axis support seat 27 of the frame 26, a grinding head base 32 is slidably mounted on the X-axis linear guide 31, a connecting plate 33 is formed on the bottom surface of the grinding head base 32, the connecting plate 33 is fixed on the X-axis screw nut 30, a pair of Z-axis linear guides 34 are fixedly installed on the top surface of the grinding head base 32, a Z-axis screw bearing is also fixedly installed between the middle and upper parts of the pair of Z-axis linear guides 34, and the Z-axis screw bearing is fixedly installed between the middle and upper parts of the pair of Z-axis linear guides A Z-axis screw 35 is rotatably provided on the shaft screw bearing, and a Z-axis servo motor 36 is also fixedly installed on the top of the Z-axis screw bearing, and the Z-axis servo motor 36 drives the Z-axis screw 35 to rotate. A Z-axis screw nut 37 is also sleeved on the Z-axis screw 35, and a grinding head suspension body 38 is fixedly installed on the Z-axis screw nut 37. The grinding head suspension body 38 extends downward to the lower edge of the Z-axis screw 35, and a liquid hydrostatic bearing sleeve 39 is also fixedly installed on the lower part of the grinding head suspension body 38. A main shaft 40 is rotatably provided in the liquid hydrostatic bearing sleeve 39, and liquid hydrostatic bearing sleeves 39 extend from both ends of the main shaft 40. A grinding wheel 41 is installed at one end of the main shaft 40, and a motor rotor 42 is fixedly installed at the other end of the main shaft 40. A motor stator housing 43 is also fixedly installed on the side of the liquid hydrostatic bearing sleeve 39 where the motor rotor 42 is installed, and the motor stator housing 43 covers one end of the main shaft 40 where the motor rotor 42 is installed.

[0025] The bottom end of the Z-axis lead screw 35 is located at 1 / 2 of the height of the Z-axis linear guide rail 34 .

[0026] A diamond pen 44 arranged upward is fixedly mounted on the top surface of the frame 26 at a position just below the hydrostatic bearing sleeve 39 on one side close to the grinding wheel 41 .

[0027] The diamond pen 44 has two pieces, one of which is arranged vertically upward, and the other is arranged obliquely toward the Z-axis screw rod.

[0028] The cross section of the grinding head suspension body 38 is in an inverted T shape, and the side of the spindle 40 where the grinding wheel 41 is installed and the side where the motor rotor 42 is installed are respectively located on both sides of the Z-axis linear guide 34.

[0029] A workbench 1 and a workpiece supporting mechanism are also provided on one side of the frame 26 close to the grinding wheel 41, a bearing seat 2 is fixedly installed on the top surface of the workbench 1, a horizontal rotating shaft 3 is rotatably installed in the bearing seat 2, a support seat 4 is fixedly installed on the horizontal rotating shaft 3, a through hole is opened in the middle of the support seat 4 and an opening is opened on one side, a workpiece supporting mechanism is set up at the through hole position of the support seat 4, the workpiece supporting mechanism includes a sleeve 5 fixedly installed at the through hole position of the support seat 4 and a vertical rotating shaft 6 rotatably installed in the sleeve 5, an electromagnetic suction cup 7 is fixedly installed on the top of the vertical rotating shaft 6, a conductive slip ring 8 is fixedly installed on the bottom end of the vertical rotating shaft 6, a large pulley 9 is also fixedly installed on the upper part of the conductive slip ring 8 of the vertical rotating shaft 6, a vertical servo motor 10 is also fixedly installed on the side of the workbench 1 located on the opening of the support seat 4, the output shaft of the vertical servo motor 10 drives the large pulley 9 to rotate through a multi-V belt 11, and one side wall of the workbench 1 A side horizontal bearing seat 12 is also fixedly installed on it, and a side horizontal rotating shaft 13 is rotatably installed in the side horizontal bearing seat 12. A linear guide 14 is fixedly installed on the side horizontal rotating shaft 13, and a screw fixing seat 15 is also fixedly installed on the linear guide 14. A screw 16 is rotatably installed on the screw fixing seat 15, and a turbine reducer 17 is fixedly installed on the bottom end of the screw 16. The workbench 1 is located below the side horizontal rotating shaft 12 and is also fixedly installed with a horizontal servo motor 18, which drives the turbine reducer 17 to rotate. A screw nut 19 is sleeved on the screw 16, and a slide plate 20 is fixedly installed on the screw nut 19. A sliding block that matches the linear guide 14 is formed on the side of the slide plate 20 facing the linear guide 14. A rotating shaft 21 is also fixedly installed on both ends of the slide plate 20. A rotating shaft seat 22 is also formed on the side of the support seat 3 close to the linear guide 14, and the rotating shaft 21 is rotatably arranged in the rotating shaft seat 22.

[0030] A groove is also formed on the top surface of the workbench 1 at a position directly below the workpiece supporting mechanism.

[0031] The axis lines of the horizontal rotation axis 3, the side horizontal rotation axis 13 and the rotation axis 21 are parallel to each other.

[0032] It also includes an angle sensor 23 fixed on one side of the top surface of the workbench 1, one end of the angle sensor 23 extends into one end of a clamping coupling 24, and the other end of the clamping coupling 24 is provided with an angle sensor connecting shaft 25, which is fixed on the side wall of the support seat 3.

[0033] The axis lines of the angle sensor connecting shaft 25 and the horizontal rotating shaft 3 are parallel to each other.

[0034] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding machine for automatically grinding a surface and a knife edge at one time, comprising a frame, characterized in that: An X-axis support seat is fixedly installed on the top surface of the frame, an X-axis screw bearing is fixedly installed on the X-axis support seat, an X-axis screw bearing is rotatably provided with an X-axis screw, an X-axis servo motor is also fixedly installed on one end of the X-axis support seat, the X-axis servo motor drives the X-axis screw to rotate, an X-axis screw nut is also sleeved on the X-axis screw, a pair of X-axis linear guides are also fixedly installed on both sides of the X-axis support seat of the frame, a grinding head base is slidably mounted on the X-axis linear guide, a connecting plate is formed on the bottom surface of the grinding head base, the connecting plate is fixed on the X-axis screw nut, a pair of Z-axis linear guides are fixedly installed on the top surface of the grinding head base, and a pair of Z-axis linear guides are fixedly installed between the middle and upper parts of the pair of Z-axis linear guides. A Z-axis screw bearing is also fixedly installed, and a Z-axis screw is rotatably provided on the Z-axis screw bearing. A Z-axis servo motor is also fixedly installed on the top of the Z-axis screw bearing, and the Z-axis servo motor drives the Z-axis screw to rotate. A Z-axis screw nut is also sleeved on the Z-axis screw, and a grinding head suspension body is fixedly installed on the Z-axis screw nut, and the grinding head suspension body extends downward to the lower edge of the Z-axis screw. A liquid hydrostatic bearing sleeve is also fixedly installed on the lower part of the grinding head suspension body, and a main shaft is rotatably provided in the liquid hydrostatic bearing sleeve, and liquid hydrostatic bearing sleeves extend from both ends of the main shaft, a grinding wheel is installed at one end of the main shaft, and a motor rotor is fixedly installed at the other end of the main shaft, and the liquid hydrostatic bearing sleeve is located at the main shaft where the motor is installed A motor stator housing is also fixedly installed on one side of the rotor, and the motor stator housing covers the end of the main shaft on which the motor rotor is installed. The bottom end of the Z-axis screw is located at 1 / 2 of the height of the Z-axis linear guide rail. The top surface of the frame is located directly below the liquid hydrostatic bearing sleeve on the side close to the grinding wheel. An upwardly set diamond pen is also fixedly installed. There are two diamond pens, one of which is vertically upward and the other is obliquely arranged toward the Z-axis screw rod. The cross-section of the grinding head suspension body is in an inverted T shape. The side of the main shaft on which the grinding wheel is installed and the side on which the motor rotor is installed are respectively located on both sides of the Z-axis linear guide rail. A workbench and a workpiece support mechanism are also provided on the side of the frame close to the grinding wheel. A bearing seat is fixedly installed on the top surface of the workbench , a horizontal rotating shaft is rotatably installed in the bearing seat, a supporting seat is fixedly installed on the horizontal rotating shaft, a through hole is opened in the middle of the supporting seat and an opening is opened on one side, a workpiece supporting mechanism is set up at the through hole position of the supporting seat, the workpiece supporting mechanism includes a sleeve fixedly installed at the through hole position of the supporting seat and a vertical rotating shaft rotatably installed in the sleeve, an electromagnetic suction cup is fixedly installed on the top of the vertical rotating shaft, a conductive slip ring is fixedly installed on the bottom end of the vertical rotating shaft, a large pulley is also fixedly installed on the upper part of the conductive slip ring of the vertical rotating shaft, a vertical servo motor is also fixedly installed on the side of the opening of the supporting seat of the working table, and the output shaft of the vertical servo motor drives the large pulley to rotate through a multi-V belt,A side horizontal bearing seat is fixedly installed on one side wall of the workbench, a side horizontal rotating shaft is rotatably installed in the side horizontal bearing seat, a linear guide rail is fixedly installed on the side horizontal rotating shaft, a screw rod fixing seat is fixedly installed on the linear guide rail, a screw rod is rotatably installed on the screw rod fixing seat, a turbine reducer is fixedly installed on the bottom end of the screw rod, a horizontal servo motor is fixedly installed on the workbench below the side horizontal rotating shaft, the horizontal servo motor drives the turbine reducer to rotate, a screw rod nut is sleeved on the screw rod, a slide plate is fixedly installed on the screw rod nut, a slider matching the linear guide rail is formed on the side of the slide plate facing the linear guide rail, a rotating shaft is fixedly installed on both ends of the slide plate, a rotating shaft seat is formed on the side of the support seat close to the linear guide rail, and the rotating shaft is rotatably arranged in the rotating shaft seat.

2. A one-time automatic grinding machine for grinding a surface and a knife edge according to claim 1, characterized in that: A groove is also formed on the top surface of the workbench at a position directly below the workpiece supporting mechanism.

3. A one-time automatic grinding machine for grinding a surface and a knife edge according to claim 1, characterized in that: The axis lines of the horizontal rotating shaft, the side horizontal rotating shaft and the rotating shaft are all parallel to each other.

4. A one-time automatic grinding machine for grinding a surface and a knife edge according to claim 1, characterized in that: It also includes an angle sensor fixed on one side of the top surface of the workbench, one end of the angle sensor extends into one end of a clamping coupling, the other end of the clamping coupling is provided with an angle sensor connecting shaft, and the angle sensor connecting shaft is fixed on the side wall of the support seat.

5. A one-time automatic grinding machine for grinding a surface and a knife edge according to claim 4, characterized in that: The axis lines of the angle sensor connecting axis and the horizontal rotating axis are parallel to each other.

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