Double stroke grinding frame device

Abstract

The invention discloses a double-stroke grinding frame device, comprising a large slide of a grinding machine, a grinding frame, a movable pad, a first driving device, a second driving device and a positioning device. The movable pad can be installed on the large slide of the grinding machine by sliding radially along the main shaft of the grinding machine on a horizontal plane for a set distance. The grinding frame can be installed on the movable pad by sliding radially along the main shaft of the grinding machine on a horizontal plane for a set distance. The first driving device and the second driving device drive the movable pad and the grinding frame to move respectively. The positioning device can fix the large slide of the grinding machine with the movable pad at any position. The invention forms a grinding frame feeding structure with a double stroke. The double-stroke grinding frame can realize the adjustment of the mold frame stroke, thereby adapting to the grinding of workpieces with different diameter differences, greatly improving the grinding compatibility of the grinding machine and reducing the grinding cost.

Description

Technical Field

[0001] The invention relates to a grinding machine, in particular to a double-stroke grinding frame device. Background Art

[0002] As one of the main performance evaluation factors of the equipment, the compatibility of the workpiece is particularly important from the user's perspective. How to make a machine capable of processing a variety of workpieces? In the market, there are already methods of grinding large-diameter workpieces to small-diameter workpieces by changing the workpiece center, but such a design requires that the center of the headstock, center stock, and tailstock can be adjusted, which has a high processing cost and is inconvenient to operate and maintain. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides a double-stroke grinding frame device, which can adjust the grinding frame stroke and can adapt to the outer circle and end face grinding of workpieces with large diameter differences.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a double-stroke grinding frame device, including a large slide of a grinding machine, a grinding frame, a movable pad, a first drive device, a second drive device and a positioning device. The movable pad can be installed on the large slide of the grinding machine by sliding radially along the main axis of the grinding machine on a horizontal plane for a set distance. The grinding frame can be installed on the movable pad by sliding radially along the main axis of the grinding machine on a horizontal plane for a set distance. The first drive device and the second drive device drive the movable pad and the grinding frame to move respectively. The positioning device can fix the large slide of the grinding machine with the movable pad at any position.

[0005] As a further improvement of the present invention, the first driving device is a hydraulic cylinder, and the second driving device includes a servo motor and a ball screw transmission mechanism.

[0006] As a further improvement of the present invention, the cylinder body of the first driving device is connected to the upper side of the large slide of the grinding machine, the piston rod of the first driving device is connected to the lower side of the movable pad, and the extension direction of the piston rod of the first driving device is opposite to the feeding direction of the movable pad.

[0007] As a further improvement of the present invention, the structure in which the piston rod of the first driving device is connected to the lower side of the movable pad is as follows: a connecting seat is fixedly provided on the lower side of the movable pad, and an earring structure is formed at the end of the piston rod of the first driving device, which is hingedly connected to the connecting seat through a pin shaft.

[0008] A hard stop device is also fixedly provided on the large slide of the grinding machine, and the hard stop device stops at the side walls at both ends of the moving pad along the sliding direction thereof.

[0009] As a further improvement of the present invention, a linear grating ruler is also provided on the movable pad, and the linear grating ruler can sense the moving distance of the grinding frame and transmit the signal to the control system of the grinding machine.

[0010] As a further improvement of the present invention, the first slider is slidably positioned in the first track, the second track is provided on the upper side of the movable pad, and the second slider which can be slidably positioned in the second track is formed on the lower surface of the grinding frame.

[0011] As a further improvement of the present invention, the positioning device is a clamping oil bag fixedly installed on the large drag plate, and the oil bag can clamp the side wall of the movable pad.

[0012] As a further improvement of the present invention, an oil supply control system is also provided, which includes an oil pump, an oil pipe, a one-way valve, a high-pressure filter, a valve block and a reflux filter. The oil pump is arranged in the oil tank of the grinder, and the oil outlet of the oil pump is connected to the one-way valve, the high-pressure filter and the oil inlet of the valve block in sequence through the oil pipe. The hydraulic cylinder and the clamping oil bag of the first drive device are connected to the working oil port on the valve block respectively, and the oil return port of the valve block is connected to the reflux filter through the oil pipe and finally connected to the oil tank of the grinder. The valve block is integrated with a switch for controlling the oil inlet and outlet of the oil bag and a first solenoid valve for controlling the oil inlet and outlet of the hydraulic cylinder.

[0013] As a further improvement of the present invention, the oil supply control system also includes a pressure gauge and a pilot overflow valve. The pressure gauge is installed on the oil pipe between the one-way valve and the high-pressure filter. One end of the pilot overflow valve is connected to the oil pipe between the one-way valve and the high-pressure filter, and the other end is connected to the return oil pipe.

[0014] The beneficial technical effect of the present invention is as follows: the present invention forms a grinding frame feeding structure with a double stroke by arranging a movable pad which can slide radially along the main shaft of the grinding machine on the large slide of the grinding machine, and installing the grinding frame on the movable pad which can slide radially along the main shaft of the grinding machine. The double stroke grinding frame can adjust the stroke of the mold frame, thereby adapting to the grinding of workpieces with different diameter differences, greatly improving the grinding compatibility of the grinding machine and reducing the grinding cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main view of the structural principle of the present invention;

[0016] Figure 2 It is a top view of the structural principle of the present invention;

[0017] Figure 3 for Figure 2 Partial cross-sectional view of the middle AA section;

[0018] Figure 4 It is a right side view of the present invention;

[0019] Figure 5 This is the main view of the use state of the present invention;

[0020] Figure 6 for Figure 5 Cross-sectional view of the middle BB part;

[0021] Figure 7 This is the oil circuit diagram of the present invention. DETAILED DESCRIPTION

[0022] Embodiment: A double-stroke grinding frame device comprises a large grinding machine slide 1, a grinding frame, a movable pad 2, a first driving device 3, a second driving device and a positioning device 4. The movable pad 2 can be installed on the large grinding machine slide 1 by sliding radially along the grinding machine spindle for a set distance on a horizontal plane. The grinding frame can be installed on the movable pad 2 by sliding radially along the grinding machine spindle for a set distance on a horizontal plane. The first driving device 3 and the second driving device drive the movable pad 2 and the grinding frame to move respectively. The positioning device 4 can fix the large grinding machine slide 1 with the movable pad 2 at any position.

[0023] When the grinder is grinding the outer circle and end face of a large-diameter workpiece, the movable pad 2 is fixed on the large slide, and its position overlaps and faces the large slide. The grinding position adjustment and grinding feed are achieved only by moving the grinding frame. When grinding the outer circle and end face of a small-diameter workpiece, the movable pad 2 is moved to a specified position toward the workpiece under the drive of the first drive device 3, and is fixed in position by the positioning device 4. Then the second drive device drives the grinding frame to move to further adjust the grinding position and grinding feed. The double-stroke grinding frame can adjust the mold frame stroke, thereby adapting to the grinding of workpieces with different diameter differences, greatly improving the grinding compatibility of the grinder and reducing the grinding cost.

[0024] The first driving device 3 is a hydraulic cylinder, and the second driving device includes a servo motor and a ball screw transmission mechanism. The hydraulic cylinder is used to quickly adjust the two positions of the moving pad 2, and the motor and the screw nut mechanism are used to further adjust the position of the grinding frame and the grinding feed. After adjustment, the self-locking of the ball screw transmission mechanism realizes positioning grinding to ensure grinding accuracy.

[0025] The cylinder body of the first driving device 3 is connected to the upper side of the large slide plate 1 of the grinder, and the piston rod of the first driving device 3 is connected to the lower side of the moving pad 2, and the extension direction of the piston rod of the first driving device 3 is opposite to the feeding direction of the moving pad 2. When the piston rod of the hydraulic cylinder is extended, the moving pad 2 is at the starting point, and when the piston rod of the hydraulic cylinder is retracted, the moving pad 2 is at the end of the stroke, which improves the carrying capacity. Of course, the reverse installation of the hydraulic cylinder can also realize the function of adjusting the position of the moving pad 2. When the hydraulic cylinder is installed, it is only necessary to set an avoidance groove on the lower side of the moving pad 2, and the hydraulic cylinder can be placed in the avoidance groove. In this way, the hydraulic cylinder can be installed and operated in the center of the connecting plate to ensure uniform and balanced force, and to ensure the accurate position and smooth movement of the moving pad 2.

[0026] The structure of connecting the piston rod of the first driving device 3 with the lower side of the moving pad 2 is as follows: a connecting seat 5 is fixedly provided on the lower side of the moving pad 2, and an earring structure 6 is formed at the end of the piston rod of the first driving device 3, and the earring structure 6 is hingedly connected to the connecting seat 5 through a pin 7. The hinged connection is achieved through the pin 7 to avoid the moving pad 2 from getting stuck during the movement process.

[0027] The grinding machine large slide plate 1 is also fixed with a hard limit device 8, which stops at the side walls of the moving pad 2 along the sliding direction. Since the moving pad 2 is open-loop controlled, it is impossible to achieve real-time feedback of the grinding frame position. The hard limit device 8 is used to limit the two positions of the moving pad 2 to ensure the accuracy of the starting point and the end point of the moving pad 2.

[0028] The moving pad 2 is also provided with a linear grating ruler, which can sense the moving distance of the grinding frame and transmit a signal to the control system of the grinder. The servo motor and the linear grating ruler form a closed-loop control to achieve real-time feedback to the control system of the grinder to ensure the accuracy of the grinding position and grinding amount.

[0029] The large carriage is provided with a first track 9, a first slider 10 is formed on the lower surface of the movable pad 2 and can be slidably positioned in the first track 9, a second track 11 is formed on the upper side of the movable pad 2, and a second slider is formed on the lower surface of the grinding frame and can be slidably positioned in the second track 11. The first and second tracks are used to guide the movement of the movable pad 2 and the grinding frame to ensure accurate and smooth movement, wherein the first and second guide rails are preferably V-shaped structures, and the first and second sliders are triangular structures matching therewith, to achieve the effect of automatic centering.

[0030] The positioning device 4 is a clamping oil bag fixedly mounted on the large carriage, and the oil bag can clamp the side wall of the moving pad 2. When the moving pad 2 moves into position (reaches the end point or the starting point), the clamping oil bag can be expanded by filling oil into the clamping oil bag to clamp the side wall of the moving pad 2. The oil bags are optimally distributed on the two opposite sides of the moving pad 2, and multiple oil bags can be evenly distributed, such as four oil bags on each side, symmetrically distributed. The clamping oil bag can be an L-shaped structure, one side wall of which is fixedly mounted on the large carriage, and the other side wall forms a corresponding relationship with the first track 9. At the same time, a concave accommodating structure is formed on the side wall of the moving pad 2, and the other side wall of the clamping oil bag expands on one side. The surface corresponds to the first track 9 to form a clamping positioning for the first slider 10. On the other hand, the oil bags located on both sides of the movable pad 2 correspond to the side walls of the concave accommodating structure on both sides of the movable pad 2, so as to realize the tight clamping of the movable pad 2 and the stable positioning of the movable pad 2. When the movable pad 2 needs to move, it is only necessary to drain the oil from the clamping oil bag and shrink the clamping oil bag. It is easy to use. The oil inlet and oil discharge of the clamping oil bag can be controlled by setting a switch on the grinder. The oil supply and oil discharge of the oil circuit can be controlled by the switch. It is easy to use.

[0031] An oil supply control system is also provided, which includes an oil pump 12, an oil pipe, a one-way valve 13, a high-pressure filter 14, a valve block 15 and a reflux filter 16. The oil pump 12 is arranged in the oil tank of the grinder, and the oil outlet of the oil pump 12 is connected to the one-way valve 13, the high-pressure filter 14 and the oil inlet of the valve block 15 in sequence through the oil pipe. The hydraulic cylinder and the clamping oil bag of the first drive device 3 are respectively connected to the working oil port on the valve block 15, and the oil return port of the valve block 15 is connected to the reflux filter 16 through the oil pipe and finally connected to the oil tank of the grinder. The valve block 15 is integrated with a switch for controlling the oil inlet and outlet of the oil bag and a first solenoid valve for controlling the oil inlet and outlet of the hydraulic cylinder.

[0032] The oil supply of the clamping oil bag and the hydraulic cylinder of the first drive device 3 is achieved through the oil pump 12, and the one-way oil supply of the oil inlet pipe is achieved through the one-way valve 13 to avoid oil backflow and ensure the oil pressure of the clamping oil bag. The switch for controlling the oil inlet and outlet of the oil bag is integrated on the valve block 15, and the solenoid valve for controlling the telescopic action of the hydraulic cylinder of the first drive device 3 is also integrated on the valve block 15. The control system of the grinder controls the switch of the clamping oil bag and the solenoid valve action of the hydraulic cylinder of the first drive device 3. The valve block 15 is also preferably integrated with oil pressure valves for adjusting the telescopic speed of the clamping oil bag and the hydraulic cylinder. It is also best to set pressure measuring points at the liquid inlet and outlet of the clamping oil bag and the hydraulic cylinder to detect the clamping force of the clamping oil bag and the pressure when the hydraulic cylinder is telescoped, so as to avoid unstable positioning and inadequate movement of the moving pad 2.

[0033] After the movable pad 2 moves into place, the oil pump 12 is started, the clamping oil bag is filled with oil, and the clamping oil bag clamps the movable pad 2. The optimal clamping pressure of the movable pad 2 is 3MPa. When the movable pad 2 needs to be extended or retracted, the switch of the clamping oil bag is pressed, the clamping oil bag is drained and relaxed, and the movable pad 2 can be retracted or retracted. When the hydraulic cylinder drives the movable pad 2 to retract or retract, the clamping oil bag needs to be kept in a relaxed state of draining oil. After the movable pad 2 is extended or retracted into place, the clamping oil bag needs to be filled with oil to clamp the movable pad 2 before the first solenoid valve of the hydraulic cylinder can be powered off.

[0034] The oil supply control system also includes a pressure gauge 17 and a pilot relief valve 18. The pressure gauge is installed on the oil pipe between the one-way valve 13 and the high-pressure filter 14. One end of the pilot relief valve is connected to the oil pipe between the one-way valve 13 and the high-pressure filter 14, and the other end is connected to the oil pipe of the oil return. The oil pressure of the oil circuit is detected by the pressure gauge. When the oil pressure is too high, the hydraulic oil is discharged through the pilot relief valve to avoid excessive oil pressure.

Claims

1. A double-stroke grinding frame device, characterized in that: The invention comprises a large slide plate (1) for a grinding machine, a grinding frame, a movable pad (2), a first driving device (3), a second driving device and a positioning device (4), wherein the movable pad can be mounted on the large slide plate for sliding along the radial direction of the grinding machine spindle on a horizontal plane for a set distance, and the grinding frame can be mounted on the movable pad for sliding along the radial direction of the grinding machine spindle on a horizontal plane for a set distance, the first driving device and the second driving device respectively drive the movable pad and the grinding frame to move, and the positioning device can fix the large slide plate for the grinding machine with the movable pad at any position, the first driving device is a hydraulic cylinder, the second driving device comprises a servo motor and a ball screw transmission mechanism, the positioning device is a clamping oil bag fixedly mounted on the large slide plate, the oil bag can clamp the side wall of the movable pad, and an oil supply control system is also provided, and the oil supply control system comprises an oil pump (12) , an oil pipe, a one-way valve (13), a high-pressure filter (14), a valve block (15) and a reflux filter (16), wherein the oil pump is arranged in the oil tank of the grinding machine, the oil outlet of the oil pump is connected to the one-way valve, the high-pressure filter and the oil inlet of the valve block in sequence through the oil pipe, the hydraulic cylinder and the clamping oil bag of the first drive device are respectively connected to the working oil port on the valve block, the oil return port of the valve block is connected to the reflux filter through the oil pipe and finally connected to the oil tank of the grinding machine, the valve block is integrated with a switch for controlling the oil inlet and outlet of the oil bag and a first solenoid valve for controlling the oil inlet and outlet of the hydraulic cylinder, the oil supply control system also includes a pressure gauge (17) and a pilot relief valve (18), the pressure gauge is installed on the oil pipe between the one-way valve and the high-pressure filter, one end of the pilot relief valve is connected to the oil pipe between the one-way valve and the high-pressure filter, and the other end is connected to the oil pipe of the return oil.

2. The double-stroke grinding frame device according to claim 1 is characterized in that: The cylinder body of the first driving device is connected to the upper side of the large slide of the grinding machine, the piston rod of the first driving device is connected to the lower side of the movable pad, and the extending direction of the piston rod of the first driving device is opposite to the feeding direction of the movable pad.

3. The double-stroke grinding frame device according to claim 2 is characterized in that: The structure of connecting the piston rod of the first driving device with the lower side of the movable pad is as follows: a connecting seat (5) is fixedly provided on the lower side of the movable pad, and an earring structure (6) is formed at the end of the piston rod of the first driving device, and the earring structure is hingedly connected to the connecting seat via a pin shaft (7).

4. The double-stroke grinding frame device according to claim 2 is characterized in that: A hard stop device (8) is also fixedly provided on the large slide of the grinding machine, and the hard stop device is stopped at the side walls at both ends of the movable pad along the sliding direction thereof.

5. The double-stroke grinding frame device according to claim 1 is characterized in that: The movable pad is also provided with a linear grating ruler, which can sense the moving distance of the grinding frame and transmit the signal to the control system of the grinding machine.

6. The double-stroke grinding frame device according to claim 1 is characterized in that: The large drag plate is provided with a first track (9), the lower surface of the movable pad is provided with a first slider (10) which can be slidably positioned in the first track, the upper side of the movable pad is provided with a second track (11), and the lower surface of the grinding frame is provided with a second slider which can be slidably positioned in the second track.

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