Workpiece charging and positioning device of ball grinding machine

Abstract

The invention discloses a workpiece loading positioning device of a ball grinding machine in the technical field of grinding machines, which comprises a male die positioning mechanism matched with a female die positioning mechanism. The male die positioning mechanism comprises a male die large bowl positioning unit, a male die small bowl positioning unit and a male die small ball positioning unit, the male die small bowl positioning unit is installed on the male die large bowl positioning unit, and the male die small ball positioning unit is installed on the male die small bowl positioning unit; the female die positioning mechanism comprises a female die large bowl positioning unit, a female die small bowl positioning unit and a female die small ball positioning unit, the female die small bowl positioning unit is installed on the female die large bowl positioning unit, and the female die small ball positioning unit is installed on the female die small bowl positioning unit. The spherical workpiece can be ground in two parts, the ground parts do not coincide, and the grinding precision and effect are improved.

Description

Technical Field

[0001] The invention relates to a workpiece charging and positioning device for a ball grinding machine in the technical field of grinding machines. Background Art

[0002] Spherical workpieces include hemispherical bowl-shaped workpieces and complete spherical workpieces. When grinding these with a grinder, the workpiece must be positioned and loaded, then secured before being ground with a sharpening tool. During positioning and loading, one portion of the workpiece must be clamped while the other is ground. However, grinding in two sections inevitably results in overlapping parts of the workpiece, compromising grinding accuracy and effectiveness, and reducing the quality of the finished workpiece. Summary of the Invention

[0003] The purpose of the present invention is to provide a workpiece loading and positioning device for a ball grinder, which can realize grinding of a spherical workpiece in two parts without overlapping the grinding parts, thereby improving the grinding accuracy and effect.

[0004] To achieve the above-mentioned objectives, the present invention provides a workpiece loading and positioning device for a ball grinding machine, comprising a punch positioning mechanism, which is equipped with a die positioning mechanism; the punch positioning mechanism comprises a punch large bowl positioning unit, a punch small bowl positioning unit and a punch small ball positioning unit, the punch small bowl positioning unit is installed on the punch large bowl positioning unit, and the punch small ball positioning unit is installed on the punch small bowl positioning unit; the die positioning mechanism comprises a die large bowl positioning unit, a die small bowl positioning unit and a die small ball positioning unit, the die small bowl positioning unit is installed on the die large bowl positioning unit, and the die small ball positioning unit is installed on the die small bowl positioning unit.

[0005] Compared with the prior art, the beneficial effect of the present invention is that the large bowl workpiece in the spherical workpiece is loaded and positioned respectively through the punch large bowl positioning unit and the die large bowl positioning unit, and the bowl mouth of the large bowl workpiece is inverted on the punch large bowl positioning unit, so that the outer wall of the large bowl workpiece is completely within the grinding range of the grinder. After the outer wall is ground, the outer periphery of the large bowl workpiece is fixed to the die large bowl positioning unit, so that the inner wall of the large bowl workpiece is completely within the grinding range of the grinder. In this way, the inner and outer walls of the large bowl workpiece can be completely ground in two steps, and there will be no overlapping parts. Similarly, the small bowl workpiece can be loaded and positioned respectively through the punch small bowl positioning unit and the die small bowl positioning unit before being ground. As for the complete spherical workpiece, it is positioned and loaded through the punch small ball positioning unit and the die small ball positioning unit, and its two symmetrical hemispherical surfaces are ground respectively. It can achieve the grinding of the spherical workpiece in two parts, and there will be no overlap in the grinding parts, thereby improving the grinding accuracy and effect.

[0006] As a further improvement of the present invention, the punch bowl positioning unit includes a punch bowl chassis, the punch bowl chassis is concentrically equipped with a punch bowl floating ring, a plurality of punch bowl adjustment grooves are opened on the punch bowl adjustment grooves, and the punch bowl positioning pins are matched to be inserted into the punch bowl positioning pins. All the punch bowl positioning pins are on the same circular surface, one end of the punch bowl positioning pin passes through the punch bowl positioning pin and is inserted into the punch bowl floating block, and the punch bowl floating block is inserted into the punch bowl floating In the moving groove, the punch bowl floating groove is opened on the outer periphery of the punch bowl chassis, and the punch bowl floating block can move back and forth in the punch bowl floating groove. There are also multiple groups of punch bowl positioning screw holes on the punch bowl floating ring. Each group of punch bowl positioning screw holes is connected to a punch bowl positioning gasket through a punch bowl positioning bolt. Bowl screw holes are opened on the punch bowl chassis, and a bowl mounting groove is opened on the punch bowl floating ring. The bowl mounting groove and the bowl screw holes are matched with bowl fixing bolts.

[0007] In this way, the large bowl fixing bolt is inserted into the large bowl mounting groove and screwed with the large bowl screw hole, so that the punch large bowl floating ring and the punch large bowl chassis can be assembled together. According to the inner diameter of the large bowl workpiece, the large bowl workpiece is turned upside down on the surface of the punch large bowl floating ring, and the punch large bowl positioning gasket is rotated so that the bowl edge of the large bowl workpiece is pressed on the surface of the punch large bowl positioning gasket. Then, the punch large bowl floating ring is rotated so that the punch large bowl positioning pin is driven by the punch large bowl adjustment groove to move toward or away from the center of the circle, thereby driving the punch large bowl floating block to move along the punch large bowl floating groove toward or away from the center of the circle, thereby adjusting the position of the punch large bowl positioning pin on the punch large bowl floating ring so that the end of the punch large bowl positioning pin can contact the inner wall of the large bowl workpiece, thereby fixing the position of the large bowl workpiece, so that the outer wall of the large bowl workpiece can be polished.

[0008] As a further improvement of the present invention, the punch small bowl positioning unit includes a punch small bowl chassis, which is fixedly connected to the punch large bowl chassis and concentrically arranged. The punch small bowl chassis passes through the punch large bowl floating ring, and the punch small bowl chassis is concentrically matched with a punch small bowl floating ring. A plurality of punch small bowl adjustment grooves are provided on the punch small bowl floating ring, and the punch small bowl adjustment grooves are matched with punch small bowl locating pins. All the punch small bowl locating pins are on the same circular surface, and one end of the punch small bowl locating pin passes through the punch small bowl locating pin and is inserted into the punch small bowl. In the floating block, the punch small bowl floating block is inserted in the punch small bowl floating groove, the punch small bowl floating groove is opened on the outer periphery of the punch small bowl chassis, the punch small bowl floating block can move back and forth in the punch small bowl floating groove, and multiple groups of punch small bowl positioning screw holes are also opened on the punch small bowl positioning ring. Each group of punch small bowl positioning screw holes is connected to a punch small bowl positioning gasket through a punch small bowl positioning bolt. Small bowl screw holes are opened on the punch small bowl chassis, and a small bowl mounting groove is opened on the punch small bowl floating ring. The small bowl mounting groove and the small bowl screw holes are matched with small bowl fixing bolts.

[0009] In this way, the small bowl fixing bolt is inserted into the small bowl mounting groove and screwed with the small bowl screw hole, so that the punch small bowl floating ring and the punch small bowl chassis can be assembled together. According to the inner diameter of the small bowl workpiece, the small bowl workpiece is turned upside down on the surface of the punch small bowl floating ring, and the punch small bowl positioning gasket is rotated so that the bowl edge of the small bowl workpiece is pressed on the surface of the punch small bowl positioning gasket. Then, the punch small bowl floating ring is rotated so that the punch small bowl positioning pin is driven by the punch small bowl adjustment groove to move toward or away from the center of the circle, thereby driving the punch small bowl floating block to move along the punch small bowl floating groove toward or away from the center of the circle, thereby adjusting the position of the punch small bowl positioning pin on the punch small bowl floating ring so that the end of the punch small bowl positioning pin can contact the inner wall of the small bowl workpiece, thereby fixing the position of the small bowl workpiece, so that the outer wall of the small bowl workpiece can be polished.

[0010] As a further improvement of the present invention, the punch ball positioning unit includes a punch ball hollow column, which is concentrically fixed to the punch small bowl chassis, the punch ball hollow column passes through the punch small bowl floating ring, the front end of the punch ball hollow column is open, the inner wall of the punch ball hollow column is processed into a frustum state, the closer the inner diameter of the punch ball hollow column is to the punch small bowl chassis, the smaller the punch ball hollow column, the punch small bowl floating ring, the punch small bowl chassis, the punch large bowl floating ring and the center of the punch large bowl chassis are connected to each other.

[0011] In this way, the spherical workpiece is placed in the hollow column of the punch ball, and its hemispherical surface contacts the inner wall of the cone in the hollow column of the punch ball. By inserting the vacuum tube from the center of the hollow column of the punch ball, the floating ring of the punch small bowl, the bottom plate of the punch small bowl, the floating ring of the punch large bowl and the bottom plate of the punch large bowl, the mouth of the vacuum tube is facing the center of the hemispherical surface of the spherical workpiece in the hollow column of the punch ball, and starting the vacuum pump, the spherical workpiece can be firmly adsorbed in the hollow column of the punch ball, so that the grinder can grind the other hemispherical surface outside the hollow column of the punch ball.

[0012] As a further improvement of the present invention, the die ball positioning unit includes a die ball hollow column, the front end of the die ball hollow column is open, the inner wall of the die ball hollow column is processed into a frustum state, the inner diameter of the die ball hollow column becomes smaller towards its rear end, the die ball hollow column is matched with the punch ball hollow column, and a die vacuum hole is opened at the rear end center of the die ball hollow column.

[0013] In this way, the other half of the spherical workpiece is placed in the hollow column of the die ball, and contacts the inner wall of the cone in the hollow column of the die ball. The vacuum hole of the die is inserted into the vacuum tube, and the vacuum pump is started to firmly adsorb the spherical workpiece in the hollow column of the die ball, so that the grinding knife can grind the hemisphere outside the hollow column of the die ball.

[0014] As a further improvement of the present invention, the die bowl positioning unit includes a die fixing ring, which is mounted on the outer periphery of the front end of the hollow column of the die ball. The die fixing ring and the die bowl cylinder are fixedly connected by bolts. The inner wall of the die bowl cylinder is processed into a frustum shape, and its inner diameter becomes smaller as it approaches the die fixing ring. The die bowl cylinder matches the floating ring of the punch bowl.

[0015] In this way, the outer wall of the small bowl workpiece is placed in the die small bowl cylinder and contacts the inner wall of the cone of the die small bowl cylinder. Since the die small bowl cylinder is open at both ends and is connected to the hollow column of the die small ball, the vacuum pump is started to vacuum, so that the small bowl workpiece is adsorbed in the die small bowl cylinder, which is convenient for the sharpener to grind the inner wall of the small bowl workpiece.

[0016] As a further improvement of the present invention, the die bowl positioning unit includes a die bowl cylinder, which is fixedly connected to the die fixing ring by bolts. The inner wall of the die bowl cylinder is processed into a frustum state, and its inner diameter becomes smaller as it gets closer to the die fixing ring. The die bowl cylinder matches the punch bowl floating ring.

[0017] In this way, the outer wall of the large bowl workpiece is placed in the large bowl cylinder of the die, and contacts the inner wall of the cone of the large bowl cylinder of the die. Since the large bowl cylinder of the die is open at both ends, it is connected to the hollow column of the die ball, so the vacuum pump is started to vacuum, so that the large bowl workpiece is adsorbed in the large bowl cylinder of the die, which is convenient for the sharpener to grind the inner wall of the large bowl workpiece.

[0018] As a further improvement of the present invention, the ends of the locating pins of the large bowl of the punch and the locating pins of the small bowl of the punch are sheathed with flexible anti-collision blocks.

[0019] In this way, the flexible anti-collision block contacts the inner wall of the large bowl workpiece or the small bowl workpiece, thereby preventing the positioning pin from hard collision with the inner wall of the workpiece and causing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a structural schematic diagram of the punch positioning mechanism of the present invention for loading and positioning a small bowl workpiece.

[0022] Figure 3 This is a schematic structural diagram of the punch positioning mechanism of the present invention for loading and positioning a spherical workpiece.

[0023] Figure 4 It is a structural schematic diagram of the punch positioning mechanism of the present invention.

[0024] Figure 5 This is a structural schematic diagram of the punch positioning mechanism of the present invention without the floating ring.

[0025] Figure 6 This is a schematic structural diagram of the die positioning mechanism of the present invention for loading and positioning a large bowl workpiece.

[0026] Figure 7 This is a schematic structural diagram of the die positioning mechanism of the present invention for loading and positioning a small bowl workpiece.

[0027] Figure 8 It is a structural schematic diagram of the die ball positioning unit in the die positioning mechanism of the present invention.

[0028] Figure 9 It is a structural schematic diagram of the die large bowl positioning unit in the die positioning mechanism of the present invention.

[0029] Figure 10 It is a structural schematic diagram of the die small bowl positioning unit in the die positioning mechanism of the present invention.

[0030] Among them, 1 die bracket, 2 die vacuum tube, 3 punch bracket, 4 punch vacuum tube, 5 punch bowl positioning gasket, 6 punch bowl positioning pin, 7 punch bowl floating ring, 8 small bowl workpiece, 9 large bowl fixing bolt, 10 punch bowl adjustment slot, 11 large bowl installation slot, 12 punch bowl positioning gasket, 13 spherical workpiece, 14 small bowl fixing bolt, 15 punch bowl positioning pin, 16 punch bowl floating ring, 17 small bowl Mounting groove, 18 punch small bowl adjustment groove, 19 flexible anti-collision block, 20 punch small ball hollow column, 21 punch small bowl floating groove, 22 punch large bowl chassis, 23 punch large bowl floating block, 24 punch small bowl floating block, 25 punch small bowl chassis, 26 punch large bowl floating groove, 27 die large bowl cylinder, 28 large bowl workpiece, 29 die small bowl cylinder, 30 die small ball hollow column, 31 die fixing ring, 32 die vacuum hole. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-10 The workpiece loading and positioning device of a ball grinding machine shown in the figure includes a punch positioning mechanism, which is equipped with a die positioning mechanism; the punch positioning mechanism includes a punch large bowl positioning unit, a punch small bowl positioning unit and a punch small ball positioning unit, the punch small bowl positioning unit is installed on the punch large bowl positioning unit, and the punch small ball positioning unit is installed on the punch small bowl positioning unit; the die positioning mechanism includes a die large bowl positioning unit, a die small bowl positioning unit and a die small ball positioning unit, the die small bowl positioning unit is installed on the die large bowl positioning unit, and the die small ball positioning unit is installed on the die small bowl positioning unit.

[0032] The punch bowl positioning unit includes a punch bowl chassis 22, which is concentrically equipped with a punch bowl floating ring 7. A plurality of punch bowl adjustment grooves 10 are provided on the punch bowl floating ring 7. The punch bowl adjustment grooves 10 are equipped with punch bowl positioning pins 6. All the punch bowl positioning pins 6 are on the same circular surface. One end of the punch bowl positioning pin 6 passes through the punch bowl positioning pin 6 and is inserted into the punch bowl floating block 23. The punch bowl floating block 23 is inserted into the punch bowl floating groove 26. The die bowl floating groove 26 is provided on the outer periphery of the punch bowl chassis 22, and the punch bowl floating block 23 can move back and forth in the punch bowl floating groove 26. The punch bowl floating ring 7 also has multiple groups of punch bowl positioning screw holes. Each group of punch bowl positioning screw holes is connected to a punch bowl positioning gasket 5 through a punch bowl positioning bolt. Bowl screw holes are provided on the punch bowl chassis 22, and a bowl mounting groove 11 is provided on the punch bowl floating ring 7. The bowl mounting groove 11 and the bowl screw holes are matched with bowl fixing bolts 9.

[0033] The punch small bowl positioning unit includes a punch small bowl chassis 25, which is fixedly connected to the punch large bowl chassis 22 and concentrically arranged. The punch small bowl chassis 25 passes through the punch large bowl floating ring 7. The punch small bowl chassis 25 is concentrically matched with a punch small bowl floating ring 16. A plurality of punch small bowl adjustment grooves 18 are opened on the punch small bowl floating ring 16. The punch small bowl adjustment groove 18 is matched with a punch small bowl positioning pin 15. All the punch small bowl positioning pins 15 are on the same circular surface. One end of the punch small bowl positioning pin 15 passes through the punch small bowl positioning pin 15 and is inserted into the punch small bowl floating block 24. In the figure, the punch small bowl floating block 24 is inserted into the punch small bowl floating groove 21, and the punch small bowl floating groove 21 is provided on the outer periphery of the punch small bowl chassis 25. The punch small bowl floating block 24 can move back and forth in the punch small bowl floating groove 21. There are also multiple groups of punch small bowl positioning screw holes on the punch small bowl positioning ring. Each group of punch small bowl positioning screw holes is connected to a punch small bowl positioning gasket 12 through a punch small bowl positioning bolt. A small bowl screw hole is provided on the punch small bowl chassis 25, and a small bowl mounting groove 17 is provided on the punch small bowl floating ring 16. The small bowl mounting groove 17 and the small bowl screw hole are matched with a small bowl fixing bolt 14.

[0034] The punch ball positioning unit includes a hollow punch ball column 20, which is concentrically fixed to the punch bowl base 25. The column passes through the punch bowl floating ring 16. The front end of the column 20 is open, and the inner wall of the column 20 is machined into a frustum. The inner diameter of the column 20 decreases as it approaches the punch bowl base 25. The centers of the column 20, the small bowl floating ring 16, the small bowl base 25, the large bowl floating ring 7, and the large bowl base 22 are interconnected. Flexible bumper blocks 19 are mounted on the ends of the large bowl positioning pin 6 and the small bowl positioning pin 15.

[0035] The die ball positioning unit includes a die ball hollow column 30, the front end of the die ball hollow column 30 is open, the inner wall of the die ball hollow column 30 is processed into a frustum state, the inner diameter of the die ball hollow column 30 becomes smaller toward its rear end, the die ball hollow column 30 is matched with the punch ball hollow column 20, and a die vacuum hole 32 is opened at the center of the rear end of the die ball hollow column 30.

[0036] The die bowl positioning unit includes a die fixing ring 31, which is mounted on the outer periphery of the front end of the die ball hollow column 30. The die fixing ring 31 is fixedly connected to the die bowl cylinder 29 by bolts. The inner wall of the die bowl cylinder 29 is processed into a frustum shape, and its inner diameter becomes smaller as it approaches the die fixing ring 31. The die bowl cylinder 29 matches the punch bowl floating ring 16.

[0037] The die bowl positioning unit includes a die bowl cylinder 27, which is fixedly connected to the die fixing ring 31 by bolts. The inner wall of the die bowl cylinder 27 is processed into a frustum state, and its inner diameter becomes smaller as it gets closer to the die fixing ring 31. The die bowl cylinder 27 matches the punch bowl floating ring 7.

[0038] In the present invention, the punch positioning mechanism and the die positioning mechanism are respectively installed on the punch bracket 3 and the die bracket 1. The two brackets are installed on the grinder and correspond to each other on the left and right. The punch positioning mechanism and the die positioning mechanism are respectively connected to a punch vacuum tube 4 and a die vacuum tube 2. The punch vacuum tube 4 and the die vacuum tube 2 are respectively connected to the punch vacuum pump and the die vacuum pump.

[0039] The following is a detailed description of the grinding of three different sizes of workpieces: a large bowl workpiece 28, a small bowl workpiece 8, and a spherical workpiece 13. When the workpiece 28 to be polished is a large bowl, the bottom of the die large bowl cylinder 27 is fixedly connected to the die fixing ring 31 by bolts, and the die small bowl cylinder 29 is removed before positioning and loading the workpiece 28. First, based on the inner diameter of the large bowl workpiece 28 and the current position of the punch large bowl positioning pin 6 on the punch large bowl floating ring 7, determine whether it is necessary to adjust the position of the punch large bowl positioning pin 6 to ensure that the large bowl workpiece 28 can be inverted on the punch large bowl floating ring 7. If the diameter of the circular surface where all the punch large bowl positioning pins 6 are located is larger than the inner diameter of the large bowl workpiece 28, rotate the punch large bowl floating ring 7 so that the punch large bowl positioning pin 6 is driven by the punch large bowl adjustment groove 10 to move toward the center of the punch large bowl floating ring 7, thereby driving the punch large bowl floating block 2 3 Move along the punch bowl floating groove 26 toward the center of the punch bowl base 22, thereby adjusting the position of the punch bowl positioning pin 6 on the punch bowl floating ring 7, so that the diameter of the circular surface where all the punch bowl positioning pins 6 are located is smaller than the inner diameter of the bowl workpiece 28, thereby ensuring that the bowl workpiece 28 can be inverted on the punch bowl floating ring 7, and then rotate the punch bowl positioning gasket 5 according to the bowl mouth diameter of the bowl workpiece 28, so that when the bowl workpiece 28 is inverted on the surface of the punch bowl floating ring 7, its bowl mouth will be pressed against the surface of the punch bowl positioning gasket 5.

[0040] When the large bowl workpiece 28 is inverted on the surface of the punch large bowl floating ring 7, continue to rotate the punch large bowl floating ring 7 to move the punch large bowl positioning pin 6 outward, so that its end can contact the inner wall of the large bowl workpiece 28, thereby fixing the position of the large bowl workpiece 28. In this way, the large bowl bolt can be screwed to fix the punch large bowl floating ring 7 and the punch large bowl chassis 22, thereby locking the positioning position of the large bowl workpiece 28 under this specification.

[0041] When the large bowl workpiece 28 is upside down on the punch large bowl floating ring 7, the vacuum pump is started. Since the vacuum tube is inserted from the punch large bowl chassis 22, the punch large bowl floating ring 7, the punch small bowl chassis 25, the punch small bowl floating ring 16 and the punch small ball hollow column 20 in sequence, and the large bowl workpiece 28 is upside down on the punch large bowl floating ring 7, its interior is facing the pipe mouth of the vacuum tube, so the vacuum is drawn by the vacuum pump, so that the large bowl workpiece 28 is firmly adsorbed on the punch large bowl floating ring 7, and the outer periphery of the large bowl workpiece 28 is polished by the grinding knife of the grinder.

[0042] When the outer periphery of the large bowl workpiece 28 is polished, the vacuum pump is turned off and it is removed from the floating ring 7 of the punch large bowl. The hemispherical bowl body of the large bowl workpiece 28 is placed in the die large bowl cylinder 27 and contacts the inner wall of the truncated cone of the die large bowl cylinder 27. Since the die large bowl cylinder 27 is open at both ends and is connected to the die small ball hollow column 30, the vacuum pump is started to evacuate the bowl workpiece 28 so that it is adsorbed in the die large bowl cylinder 27 and the inner wall of the bowl workpiece 28 is polished by the grinder of the grinder. If the grinding machine itself is equipped with a moving mechanism, after the outer periphery of the large bowl workpiece 28 is ground, the punch holder 3 can be moved to the die holder 1, so that the bowl body of the large bowl workpiece 28 is facing the die large bowl cylinder 27, and the bowl body of the large bowl workpiece 28 is gradually pushed into the die large bowl cylinder 27. Then, the punch vacuum pump is turned off and the die vacuum pump is started, the punch holder 3 is moved back to its original position, and the grinding knife of the grinding machine is started to grind the inner wall of the large bowl workpiece 28. After grinding, the die vacuum pump is turned off and the large bowl workpiece 28 is removed. In this way, the large bowl workpiece 28 is ground in two parts, the inner and outer parts, and there is no repeated grinding part, and the grinding accuracy and effect are better.

[0043] When the workpiece 8 to be polished is a small bowl, the large bowl cylinder 27 of the die is removed, and the bottom of the small bowl cylinder 29 of the die is fixedly connected to the die fixing ring 31 by bolts, and then the small bowl workpiece 8 is positioned and loaded. First, according to the inner diameter of the small bowl workpiece 8 and the current position of the punch small bowl locating pin 15 on the punch small bowl floating ring 16, determine whether it is necessary to adjust the position of the punch small bowl locating pin 15 to ensure that the small bowl workpiece 8 can be inverted on the punch small bowl floating ring 16. If the diameter of the circular surface where all the punch small bowl locating pins 15 are located is smaller than the inner diameter of the small bowl workpiece 8, the punch small bowl floating ring 16 is rotated so that the punch small bowl locating pin 15 is driven by the punch small bowl adjustment groove 18 to move toward the center of the punch small bowl floating ring 16, thereby driving the punch small bowl floating block 24 moves along the punch small bowl floating groove 21 toward the center of the punch small bowl base 25, thereby adjusting the position of the punch small bowl locating pin 15 on the punch small bowl floating ring 16, so that the diameter of the circular surface where all the punch small bowl locating pins 15 are located is smaller than the inner diameter of the small bowl workpiece 8, thereby ensuring that the small bowl workpiece 8 can be inverted on the punch small bowl floating ring 16, and then according to the bowl mouth diameter of the small bowl workpiece 8, rotate the punch small bowl positioning gasket 12, so that when the small bowl workpiece 8 is inverted on the surface of the punch small bowl floating ring 16, its bowl mouth will be pressed on the surface of the punch small bowl positioning gasket 12.

[0044] When the small bowl workpiece 8 is inverted on the surface of the punch small bowl floating ring 16, continue to rotate the punch small bowl floating ring 16 to move the punch small bowl positioning pin 15 outward, so that its end can contact the inner wall of the small bowl workpiece 8, thereby fixing the position of the small bowl workpiece 8. In this way, the small bowl bolt can be screwed to fix the punch small bowl floating ring 16 and the punch small bowl chassis 25, thereby locking the positioning position of the small bowl workpiece 8 under this specification.

[0045] When the small bowl workpiece 8 is upside down on the punch small bowl floating ring 16, the vacuum pump is started. Since the vacuum tube is inserted from the punch small bowl chassis 25, the punch small bowl floating ring 16, the punch small bowl chassis 25, the punch small bowl floating ring 16 and the punch small ball hollow column 20 in sequence, and the small bowl workpiece 8 is upside down on the punch small bowl floating ring 16, its interior is facing the pipe mouth of the vacuum tube, so the vacuum is drawn by the vacuum pump, so that the small bowl workpiece 8 is firmly adsorbed on the punch small bowl floating ring 16, and the outer periphery of the small bowl workpiece 8 is polished by the grinding knife of the grinder.

[0046] When the outer periphery of the small bowl workpiece 8 is polished, the vacuum pump is turned off and it is removed from the floating ring 16 of the punch small bowl. The hemispherical bowl body of the small bowl workpiece 8 is placed in the die small bowl cylinder 29 and contacts the inner wall of the cone of the die small bowl cylinder 29. Since the die small bowl cylinder 29 is open at both ends and is connected to the die small ball hollow column 30, the vacuum pump is started to evacuate the small bowl workpiece 8 so that the small bowl workpiece 8 is adsorbed in the die small bowl cylinder 29 and the inner wall of the small bowl workpiece 8 is polished by the grinder of the grinder. If the grinder itself is equipped with a moving mechanism, then after the outer periphery of the small bowl workpiece 8 is ground, it can be moved to the die holder 1 with the punch holder 3, so that the bowl body of the small bowl workpiece 8 is facing the die small bowl cylinder 29, and the bowl body of the small bowl workpiece 8 is gradually pushed into the die small bowl cylinder 29, and then the punch vacuum pump is turned off and the die vacuum pump is started, the punch holder 3 is moved back to its original position, and the grinder is started to grind the inner wall of the small bowl workpiece 8. After grinding, turn off the die vacuum pump and remove the small bowl workpiece 8. In this way, the small bowl workpiece 8 is ground in two parts, the inner and outer parts, and there will be no repeated grinding parts, and the grinding accuracy and effect are better.

[0047] When the workpiece to be ground is a spherical workpiece 13, the large bowl cylinder 27 of the die and the small bowl cylinder 29 of the die are both removed, so that the spherical workpiece 13 is placed in the hollow column 20 of the punch ball, and its hemispherical surface contacts the inner wall of the cone in the hollow column 20 of the punch ball. Since the vacuum tube is inserted from the punch bowl chassis 25, the punch bowl floating ring 16, the punch bowl chassis 25, the punch bowl floating ring 16 and the punch ball hollow column 20 in sequence, the mouth of the vacuum tube is facing the center of the hemispherical surface of the spherical workpiece 13 in the hollow column 20 of the punch ball. When the vacuum pump is started, the spherical workpiece 13 can be firmly adsorbed in the hollow column 20 of the punch ball, so that the grinder can grind the other hemispherical surface outside the hollow column 20 of the punch ball.

[0048] After the other hemisphere of the spherical workpiece 13 is polished, it is directly placed in the hollow column 30 of the die ball, in contact with the inner wall of the cone in the hollow column 30 of the die ball, and the vacuum tube is inserted into the vacuum hole 32 of the die. Starting the vacuum pump can firmly adsorb the spherical workpiece in the hollow column 30 of the die ball, so that the grinder can polish the hemisphere outside the hollow column 30 of the die ball. In this way, the two symmetrical hemispheres of the spherical workpiece 13 are polished.

[0049] If the grinding machine itself is equipped with a moving mechanism, after the other hemisphere of the spherical workpiece 13 outside the hollow column 20 of the punch ball is ground, the moving mechanism can be used to move the punch holder 3 to the die holder 1, so that the other hemisphere of the spherical workpiece 13 that has been ground faces the hollow column 30 of the die ball, and the other hemisphere of the spherical workpiece 13 that has been ground is gradually pushed into the hollow column 30 of the die ball. Then, the punch vacuum pump is turned off and the die vacuum pump is started, so that the spherical workpiece 13 is firmly adsorbed in the hollow column 30 of the die ball. The punch holder 3 is moved back to its original position, and the grinding knife of the grinding machine is started to grind the hemisphere of the spherical workpiece 13 outside the hollow column 30 of the die ball. After grinding is completed, the die vacuum pump is turned off and the spherical workpiece 13 is removed.

[0050] The present invention can accurately position and load three spherical workpieces of different specifications, facilitates the grinder to perform precise grinding, provides a basis for realizing automated grinding, and greatly improves the grinding accuracy and effect.

[0051] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features therein according to the disclosed technical content without creative labor, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. A workpiece loading and positioning device for a ball grinding machine, characterized in that: It includes a punch positioning mechanism, which is equipped with a die positioning mechanism; The punch positioning mechanism includes a punch large bowl positioning unit, a punch small bowl positioning unit and a punch small ball positioning unit. The punch small bowl positioning unit is installed on the punch large bowl positioning unit, and the punch small ball positioning unit is installed on the punch small bowl positioning unit. The die positioning mechanism includes a die large bowl positioning unit, a die small bowl positioning unit and a die small ball positioning unit. The die small bowl positioning unit is installed on the die large bowl positioning unit, and the die small ball positioning unit is installed on the die small bowl positioning unit.

2. The workpiece loading and positioning device for a ball grinding machine according to claim 1, characterized in that: The punch bowl positioning unit includes a punch bowl chassis, which is concentrically equipped with a punch bowl floating ring. The punch bowl floating ring is provided with multiple punch bowl adjustment grooves. The punch bowl adjustment grooves are equipped with punch bowl positioning pins. All the punch bowl positioning pins are on the same circular surface. One end of the punch bowl positioning pin passes through the punch bowl positioning pin and is inserted into the punch bowl floating block. The punch bowl floating block is inserted into the punch bowl floating groove. The large bowl floating groove is opened on the outer periphery of the punch large bowl chassis, and the punch large bowl floating block can move back and forth in the punch large bowl floating groove. There are also multiple groups of punch large bowl positioning screw holes on the punch large bowl floating ring. Each group of punch large bowl positioning screw holes is connected to a punch large bowl positioning gasket through a punch large bowl positioning bolt. The punch large bowl chassis is provided with large bowl screw holes, and the punch large bowl floating ring is provided with a large bowl mounting groove. The large bowl mounting groove and the large bowl screw holes are matched with large bowl fixing bolts.

3. The workpiece loading and positioning device for a ball grinding machine according to claim 2, characterized in that: The punch small bowl positioning unit includes a punch small bowl chassis, which is fixedly connected to the punch large bowl chassis and concentrically arranged. The punch small bowl chassis passes through the punch large bowl floating ring. The punch small bowl chassis is concentrically matched with a punch small bowl floating ring. A plurality of punch small bowl adjustment grooves are opened on the punch small bowl floating ring. The punch small bowl adjustment grooves are matched with punch small bowl locating pins. All the punch small bowl locating pins are on the same circular surface. One end of the punch small bowl locating pin passes through the punch small bowl locating pin and is inserted into the punch small bowl floating block. The die small bowl floating block is inserted in the punch small bowl floating groove, and the punch small bowl floating groove is provided on the outer periphery of the punch small bowl chassis. The punch small bowl floating block can move back and forth in the punch small bowl floating groove. There are also multiple groups of punch small bowl positioning screw holes on the punch small bowl positioning ring. Each group of punch small bowl positioning screw holes is connected to a punch small bowl positioning gasket through a punch small bowl positioning bolt. There are small bowl screw holes on the punch small bowl chassis, and a small bowl mounting groove is provided on the punch small bowl floating ring. The small bowl mounting groove and the small bowl screw holes are matched with small bowl fixing bolts.

4. The workpiece loading and positioning device for a ball grinding machine according to claim 3, characterized in that: The punch ball positioning unit includes a punch ball hollow column, which is concentrically fixed to the punch bowl chassis. The punch ball hollow column passes through the punch bowl floating ring. The front end of the punch ball hollow column is open. The inner wall of the punch ball hollow column is processed into a frustum. The closer the inner diameter of the punch ball hollow column is to the punch bowl chassis, the smaller it is. The centers of the punch ball hollow column, the punch bowl floating ring, the punch bowl chassis, the large bowl floating ring and the large bowl chassis are connected to each other.

5. The workpiece loading and positioning device for a ball grinding machine according to claim 4, characterized in that: The die ball positioning unit includes a die ball hollow column, the front end of the die ball hollow column is open, the inner wall of the die ball hollow column is processed into a frustum state, the inner diameter of the die ball hollow column becomes smaller toward its rear end, the die ball hollow column matches the punch ball hollow column, and a die vacuum hole is opened at the center of the rear end of the die ball hollow column.

6. The workpiece loading and positioning device for a ball grinding machine according to claim 5, characterized in that: The die bowl positioning unit includes a die fixing ring, which is mounted on the outer periphery of the front end of the die ball hollow column. The die fixing ring and the die bowl cylinder are fixedly connected by bolts. The inner wall of the die bowl cylinder is processed into a frustum shape, and its inner diameter becomes smaller as it approaches the die fixing ring. The die bowl cylinder matches the punch bowl floating ring.

7. The workpiece loading and positioning device for a ball grinding machine according to claim 6, characterized in that: The die bowl positioning unit includes a die bowl cylinder, which is fixedly connected to the die fixing ring by bolts. The inner wall of the die bowl cylinder is processed into a frustum state, and its inner diameter becomes smaller as it gets closer to the die fixing ring. The die bowl cylinder matches the punch bowl floating ring.

8. The workpiece loading and positioning device for a ball grinding machine according to claim 7, characterized in that: The ends of the convex die large bowl locating pin and the convex die small bowl locating pin are covered with flexible anti-collision blocks.

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