CN105150066B - Segment difference grinding machine - Google Patents

Abstract

The invention discloses a segment difference grinding machine, which comprises a machine tool body, a material tray, a working head assembly, a grinding wheel assembly and a manipulator assembly, wherein the material tray, the working head assembly, the grinding wheel assembly and the manipulator assembly are all installed on the machine tool body, the manipulator assembly is positioned above the working head assembly and the grinding wheel assembly, the working head assembly comprises a saddle, a base, a first guide rail, a first screw rod, a first servo motor, a material pressing device, a working head sliding plate, a second guide rail, a second screw rod, a second servo motor, a third servo motor, a main shaft fixing seat, a working head main shaft and a workpiece clamping device, the base is fixed on the machine tool body, the first guide rail is transversely fixed on the base, the saddle is in sliding fit with the first guide rail, the first servo motor is fixed on the base and is butted with the first screw rod, the first screw rod is in. The working head component has the advantages of large moving distance, small rotation swing of the workpiece, and high processing efficiency and precision.

Description

Step Grinder

technical field

The present invention relates to a grinding machine, in particular to a step grinding machine.

Background technique

The step difference grinder is a forming machine used to form the step difference outer diameter of the workpiece. At present, there is only one layer of guide rails in the working head frame of the step grinding machine that is common in the market. The moving stroke is relatively small. When grinding a long workpiece, there is no pressing device at the front end of the workpiece, which is prone to rotation and swing, which affects the processing. precision. Moreover, the emery wheel head works as a single emery wheel, and if the rough grinding and fine grinding of the workpiece are required, different emery wheels must be replaced to complete, and the work efficiency and precision are not high.

Contents of the invention

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a step grinding machine with a large moving distance of the working head assembly, small rotational swing of the workpiece, and high processing efficiency and processing accuracy.

The object of the present invention is achieved through the following technical solutions:

The step grinding machine includes a machine tool body, a material tray all installed on the machine body, a working head assembly, a grinding wheel assembly, and a manipulator assembly, the manipulator assembly is located above the working head assembly and the grinding wheel assembly, and the working head assembly includes a saddle, a base, and a first guide rail , the first screw rod, the first servo motor, the pressing device, the working head slide plate, the second guide rail, the second screw rod, the second servo motor, the third servo motor, the spindle fixing seat, the working head spindle and the workpiece clamping device , the base is fixed on the machine tool body, the first guide rail is fixed on the base along the transverse direction, the saddle is slidingly matched with the first guide rail, the first servo motor is fixed on the base and connected with the first screw, and the first screw is threaded with the saddle. The second guide rail is fixed on the saddle and parallel to the first guide rail, the slide plate of the working head is slidingly matched with the second guide rail, the second servo motor is fixed on the saddle and connected with the second screw rod, and the second screw rod is threadedly matched with the slide plate of the working head , the spindle fixing seat and the third servo motor are fixed on the working head slide, the working head spindle is pivotally connected to the working head fixing seat, the third servo motor is connected to the working head spindle, and the workpiece clamping device is installed on the working head spindle close to the grinding wheel assembly At one end, the pressing device is fixed on the saddle and is spaced laterally from the workpiece clamping device.

Preferably, the grinding wheel assembly includes a grinding wheel assembly including a third guide rail, a rough grinding slide, a third screw rod, a fourth servo motor, a rough grinding holder, a fifth servo motor, a rough grinding spindle, a rough grinding wheel, a fourth guide rail, a fine grinding The grinding slide, the fourth screw rod, the sixth servo motor, the fine grinding fixed seat, the electric spindle and the fine grinding wheel, the third guide rail, the fourth guide rail, the fourth servo motor, and the sixth servo motor are all fixed on the machine tool body, and the third The guide rail and the fourth guide rail both extend longitudinally, the rough grinding slide plate is slidingly matched with the third guide rail, the fourth servo motor is connected with the third screw rod, the third screw rod is threaded with the rough grind slide plate, and the fifth servo motor is fixed with the coarse grinder The base is fixed on the coarse grinding slide, the coarse grinding main shaft is pivotally connected to the coarse grinding fixed seat, the fifth servo motor is connected to the coarse grinding main shaft, the rough grinding wheel is fixed on the rough grinding main shaft, the fine grinding slide is slidably matched with the fourth guide rail, and the sixth The servo motor is docked with the fourth screw rod, the fourth screw rod is threaded with the fine grinding slide plate, the fine grinding fixing seat is fixed on the fine grinding slide plate, the electric spindle is installed on the fine grinding fixed seat, the fine grinding wheel is fixed on the electric spindle, and the fine grinding wheel Perpendicular to the coarse grinding wheel.

Preferably, a grinding wheel dressing seat is fixed on the fine grinding slide, and a grinding wheel dresser is installed on the grinding wheel dressing seat.

Preferably, the manipulator assembly includes a manipulator seat, a transverse guide rail, a beam and a manipulator, the manipulator seat protrudes upwards from the top of the machine tool body, the transverse guide rail is fixed on the manipulator seat, the cross beam and the transverse guide rail are slidably matched and perpendicular to the transverse guide rail, and the manipulator is installed at the end of the cross beam department.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention increases the stroke of the working head assembly during the workpiece grinding process through the arrangement of the saddle and the working head slide plate, and the adjustability of the distance between the pressing device and the grinding wheel on the side of the saddle close to the grinding wheel assembly reduces the rotation of the workpiece The swing at the time improves the processing accuracy. After the processing is completed, the distance is increased to leave enough space for the exchange of the grinding wheel. At the same time, the upper and lower double-layer guide rails can be moved separately, which makes the stroke adjustment of the working head assembly more flexible. The grinding wheel assembly uses double grinding wheels to work at the same time. It is divided into two parts: rough grinding and fine grinding. The workpiece can be machined with two grinding degrees, which improves the precision and efficiency. At the same time, the invention is also equipped with a manipulator assembly, which does not require manual operations for clamping the workpiece and disassembling the product, and has a high degree of automation throughout the process.

Description of drawings

Fig. 1 is the top view structure schematic diagram of the step grinding machine of the present invention;

Fig. 2 is a three-dimensional schematic diagram of the step grinding machine of the present invention.

In the figure: 100, machine tool body; 1, saddle; 2, base; 3, first guide rail; 4, second guide rail; 5, second servo motor; 6, first servo motor; 7, working head slide plate; 8 1. Main shaft of working head; 9. Third servo motor; 10. Main shaft fixing seat; 11. Workpiece clamping device; 12. Pressing device; 13. Rough grinding slide plate; 14. Fourth servo motor; 16. The first manual adjustment device; 17. The fifth servo motor; 18. Rough grinding spindle; 19. Rough grinding holder; 20. Rough grinding wheel; 21. The fourth guide rail; 22. Fine grinding wheel; 23. Electric spindle ;24, the second manual adjustment device; 25, the fine grinding fixed seat; 26, the fine grinding slide plate; 27, the grinding wheel dressing seat; 28, the grinding wheel dresser; 29, the sixth servo motor; Seat; 32, transverse guide rail; 33, beam; 34, manipulator.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The step grinding machine shown in Figure 1-2 includes a machine tool body 100, a material tray 30, a working head assembly, a grinding wheel assembly and a manipulator 34 assembly all installed on the machine tool body 100, and the manipulator 34 assembly is located above the working head assembly and the grinding wheel assembly , the working head assembly includes a saddle 1, a base 2, a first guide rail 3, a first screw mandrel, a first servo motor 6, a pressing device 12, a working head slide 7, a second guide rail 4, a second screw mandrel, a second The servo motor 5, the third servo motor 9, the main shaft holder 10, the work head main shaft 8 and the workpiece clamping device 11, the base 2 is fixed on the machine tool body 100, the first guide rail 3 is fixed on the base 2 along the transverse direction, the saddle 1 and the second A guide rail 3 is slidingly matched, the first servo motor 6 is fixed on the base 2 and connected with the first screw rod, the first screw rod is threaded with the saddle 1, and the second guide rail 4 is fixed on the saddle 1 and parallel to the first guide rail 3 , the working head slide 7 is slidingly matched with the second guide rail 4, the second servo motor 5 is fixed on the saddle 1 and connected with the second screw, the second screw is screwed with the working head slide 7, the main shaft fixing seat 10 and the third The servo motors 9 are all fixed on the working head slide plate 7, the working head main shaft 8 is pivotally connected to the working head fixing seat, the third servo motor 9 is connected to the working head main shaft 8 in transmission, and the workpiece clamping device 11 is installed on the working head main shaft 8 close to the grinding wheel assembly At one end, the pressing device 12 is fixed on the saddle 1 and spaced laterally from the workpiece clamping device 11 .

As a preferred embodiment, the grinding wheel assembly includes a grinding wheel assembly including a third guide rail 15, a rough grinding slide 13, a third screw, a fourth servo motor 14, a rough grinding fixing seat 19, a fifth servo motor 17, and a rough grinding spindle 18 , coarse grinding wheel 20, the fourth guide rail 21, fine grinding slide plate 26, the fourth screw mandrel, the sixth servo motor 29, fine grinding holder 25, electric spindle 23 and fine grinding wheel 22, the third guide rail 15, the fourth guide rail 21. Both the fourth servo motor 14 and the sixth servo motor 29 are fixed on the machine tool body 100, and the third guide rail 15 extends horizontally, the fourth guide rail 21 extends longitudinally, the rough grinding slide plate 13 is slidably matched with the third guide rail 15, and the third guide rail 15 is slidably matched. Four servo motors 14 are docked with the third screw rod, the third screw rod is screwed with the rough grinding slide plate 13, the fifth servo motor 17 and the rough grinder holder 19 are fixed on the rough grinder slide plate 13, and the rough grinder spindle 18 is pivotally connected to the rough grinder The fixed seat 19, the fifth servo motor 17 is connected to the rough grinding main shaft 18 in transmission, the rough grinding wheel 20 is fixed on the rough grinding main shaft 18, the fine grinding slide plate 26 is slidingly matched with the fourth guide rail 21, the sixth servo motor 29 is connected with the fourth screw rod Docking, the fourth screw rod is threadedly matched with the fine grinding slide plate 26, the fine grinding fixed seat 25 is fixed on the fine grinding slide plate 26, the electric spindle 23 is pivotally connected to the fine grinding fixed seat 25, the fine grinding wheel 22 is fixed on the electric spindle 23, and the fine grinding Wheel 22 is perpendicular to coarse grinding wheel 20 .

As a preferred embodiment, a grinding wheel dressing seat 27 is fixed on the fine grinding slide 26, and a grinding wheel dresser 28 is installed on the grinding wheel dressing seat 27.

As a preferred embodiment, the manipulator 34 assembly includes a manipulator seat 31, a first transverse guide rail 32, a beam 33 and a manipulator 34, the manipulator seat 31 protrudes upward from the top of the machine tool body 100, and the first transverse guide rail 32 is fixed to the manipulator seat 31, The crossbeam 33 is slidingly matched with the first transverse guide rail 32 and is perpendicular to the first transverse guide rail 32 , and the manipulator 34 is installed on the end of the crossbeam 33 .

Wherein, the pressing device 12 plays a role of fixing and supporting the workpiece to reduce the rotation and swing of the workpiece during the processing. The workpiece clamping device 11 is installed on the side of the working head spindle 8 close to the grinding wheel assembly to facilitate workpiece processing. The grinding wheel dresser 28 is installed on the grinding wheel dressing seat 27 and can move laterally from side to side to facilitate the shape dressing of the grinding wheel. The grinding wheel dressing seat 27 is supported on the fine grinding slide plate 26 . In addition, a first manual adjustment device 16 and a second manual adjustment device 24 can be additionally provided for manually adjusting the feed of the coarse grinding slide 13 and the fine grinding slide 26 respectively.

The working principle of this differential grinding machine is as follows:

The first servo motor 6 drives the screw to rotate, and the saddle 1 moves horizontally along the first guide rail 3 of the base 2 under the drive of the first screw, and the working head slide plate 7 is supported on the saddle 1, and the second servo motor 5 Driven by it, it can move laterally along the second guide rail 4 of the saddle 1. The main shaft fixing base 10 and the third servo motor 9 are supported on the working head slide plate 7 , the working head main shaft 8 is supported on the main shaft fixing base 10 , driven by the third servo motor 9 , the working head main shaft 8 works and rotates. The manipulator 34 seat 31 is installed next to the base 2, as shown in the figure, the first horizontal guide rail 32 is installed on it, the beam 33 is in the sky above the working head assembly, and can move laterally on the first horizontal guide rail 32, and the manipulator 34 passes through them after grabbing the workpiece The cooperative movement between them moves the workpiece to the working assembly for accurate installation.

Grinding wheel assembly: rough grinding part: the fourth servo motor 14 drives the third screw to rotate, the third screw drives the rough grinding slide 13 to move longitudinally along the third guide rail 15, the fifth servo motor 17 and the rough grinding main shaft support seat 19 are installed On the coarse grinding slide 13, the coarse grinding spindle 18 is supported on the coarse grinding spindle support seat 19 and rotates under the drive of the fifth servo motor 17; for the fine grinding part: the sixth servo motor 29 drives the fourth screw rod to rotate and drive, thereby driving The fine grinding slide 26 installed on it moves longitudinally along the fourth guide rail 21, the fine grinding holder 25 and the grinding wheel dresser 28 are installed on the fine grinding slide 26, and the fine grinding wheel 22 is driven by the electric spindle 23, which can be adjusted according to the processing needs. By adjusting the rotating speed of the emery wheel, the emery wheel dresser 28 can dress the shape of the finely ground emery wheel, which is convenient for processing.

When processing a workpiece, firstly, the first screw rod is driven to rotate by the first servo motor 6, and the distance between the pressing device 12 on the saddle 1 and the grinding wheel assembly is adjusted according to the size of the workpiece, and then the workpiece is picked up from the tray 30 by the manipulator 34 Move to the working head assembly to install the workpiece accurately, turn on the second servo motor 5 to drive the working head slide 7, the spindle fixing seat 10 will move to the direction of the grinding wheel assembly along with the working head slide 7, and turn on the third servo motor 9 to drive the working head spindle 8 and the workpiece rotation, the double-layer guide rail makes the stroke of the working head assembly larger, and the stroke of the workpiece is more flexible. When the workpiece is long, adjust the distance between the pressing device and the grinding wheel head to reduce the swing when the workpiece rotates and improve The machining accuracy is improved. Turn on the fourth servo motor 14 to drive the third screw and the rough grinding wheel 20 to move to a certain position, then use the manual adjustment seat 16 to fine-tune the grinding depth, adjust the position of the rough grinding wheel 20, and then start the sixth servo motor 29 drives the fourth screw rod to rotate and drive, and after driving the fine grinding wheel 22 to move to a certain position, the grinding amount is finely adjusted through the manual adjustment seat 24. The fine grinding wheel 22 is also provided with a wheel dresser 28 that can Different shapes of grinding wheels are trimmed to facilitate processing and grinding. The rough grinding wheel 22 is driven by the electric spindle 23, which has high power, fast grinding speed, and improves processing efficiency. The electric spindle 23 used by the fine grinding wheel 22 can be used for different products. Different rotation speeds to improve machining accuracy. After the workpiece processing is completed, the first servo motor 6 drives the first screw to rotate, so that the saddle 1 and the pressing device 12 move in the opposite direction of the grinding wheel assembly, increasing the distance between the pressing device 12 and the grinding wheel assembly, and reserve enough The space is convenient to the dismounting of coarse grinding wheel 20, finish grinding wheel 22 and reloading, and manipulator 34 takes off workpiece and puts back into tray 30 li simultaneously, repeats next working cycle.

The embodiments of the present invention are not limited thereto. According to the above content of the present invention, using ordinary technical knowledge and conventional means in this field, without departing from the above-mentioned basic technical ideas of the present invention, the present invention can also make other various forms. Amendment, replacement or alteration all fall within the protection scope of the present invention.

Claims (2)

1. The step grinding machine is characterized in that it includes a machine tool body, a material tray, a working head assembly, a grinding wheel assembly and a manipulator assembly all installed on the machine tool body, the manipulator assembly is located above the working head assembly and the grinding wheel assembly, and the working head assembly includes a saddle , the base, the first guide rail, the first screw, the first servo motor, the pressing device, the working head slide, the second guide rail, the second screw, the second servo motor, the third servo motor, the spindle holder, the working head Spindle and workpiece clamping device, the base is fixed on the machine tool body, the first guide rail is fixed on the base along the transverse direction, the saddle slides and fits with the first guide rail, the first servo motor is fixed on the base and docked with the first screw rod, the first screw rod It is threadedly matched with the saddle, the second guide rail is fixed on the saddle and parallel to the first guide rail, the sliding plate of the working head is slidably matched with the second guide rail, the second servo motor is fixed on the saddle and docked with the second screw rod, and the second screw rod Cooperate with the working head slide plate thread, the main shaft fixing seat and the third servo motor are fixed on the working head sliding plate, the working head main shaft is pivotally connected to the working head fixing seat, the third servo motor is connected with the working head main shaft transmission, and the workpiece clamping device is installed on the The main shaft of the working head is close to one end of the grinding wheel assembly, and the pressing device is fixed on the saddle and separated from the workpiece clamping device laterally; The grinding wheel assembly includes the third guide rail, the rough grinding slide, the third screw rod, the fourth servo motor, the rough grinding holder, the fifth servo motor, the rough grinding spindle, the rough grinding wheel, the fourth guide rail, the fine grinding slide, the fourth wire The rod, the sixth servo motor, the fine grinding fixed seat, the electric spindle and the fine grinding wheel, the third guide rail, the fourth guide rail, the fourth servo motor, and the sixth servo motor are all fixed on the machine tool body, and the third guide rail and the fourth guide rail are all fixed on the machine tool body. Extending along the longitudinal direction, the coarse grinding slide is slidingly matched with the third guide rail, the fourth servo motor is connected with the third screw, the third screw is threaded with the coarse grinding slide, and the fifth servo motor and the coarse grinding fixing seat are fixed on the coarse grinding slide , the coarse grinding spindle is pivotally connected to the coarse grinding fixed seat, the fifth servo motor is connected to the coarse grinding spindle, the coarse grinding wheel is fixed on the coarse grinding spindle, the fine grinding slide plate is slidingly matched with the fourth guide rail, the sixth servo motor is connected with the fourth wire The rods are butted, the fourth screw rod is threaded with the fine grinding slide, the fine grinding fixing seat is fixed on the fine grinding slide, the electric spindle is installed on the fine grinding fixing seat, the fine grinding wheel is fixed on the electric spindle, and the fine grinding wheel is perpendicular to the rough grinding wheel; The manipulator assembly includes a manipulator seat, a transverse guide rail, a beam and a manipulator. The manipulator seat protrudes upward from the top of the machine tool body. The transverse guide rail is fixed on the manipulator seat. 2 . The step grinding machine according to claim 1 , wherein a grinding wheel dressing seat is fixed on the fine grinding slide plate, and a grinding wheel dresser is installed on the grinding wheel dressing seat. 3 .