Multi-blade common grinding machine

Abstract

The present invention discloses a multi-blade co-grinding grinder, which includes a bed body and a grinding head. At least two columns of electromagnetic chucks are supported on the bed body through a rotating shaft, and angle sensors are provided on each column of electromagnetic chucks. An electromagnetic chuck adjustment and locking device including a worm and worm gear pair is installed on the end face of the bed body. The rotating shaft is connected to a driving motor through the worm and worm gear pair, and a worm locking mechanism is also provided on the adjustment and locking device seat. The axis of the grinding head is vertically arranged above the electromagnetic chuck. A flange seat is installed on the grinding head motor of the grinding head. The flange seat is connected to a connecting chuck through an eccentric clamping handle via a clamping connecting rod. The grinding wheel in the grinding head is fixedly connected to the inner and outer grinding wheel chucks, and the connecting chuck can be rotationally inserted into a connecting tenon groove on the outer grinding wheel chuck through a connecting tenon piece. Using the multi-blade co-grinding grinder of the present invention can simultaneously perform grinding processing on multiple straight blades, meet the quality requirements for grinding wheel installation, reduce the time required for grinding wheel replacement, and thus improve the working efficiency of the grinder.

Description

Technical Field

[0001] The present invention relates to a metal cutting machine tool, and particularly to a grinding machine for a long strip-shaped straight knife. Background Art

[0002] The long strip-shaped straight knife is a cutting tool widely used in industries such as papermaking, printing, textile, fiber, food, forestry, plastics, and wood industry. Its structure is simple. During the production and manufacturing process, the side surface and the edge inclined surface of the straight knife body need to be ground. The existing straight knife grinding machine includes an electromagnetic chuck that serves as a grinding workbench for the straight knife blade. The straight knife blade to be ground is adsorbed and fixed on the working surface of the electromagnetic chuck by the electromagnetic chuck, and the relevant surfaces of the straight knife are ground by the grinding wheel. The invention patent straight knife grinding machine with the publication number CN209598832U is a relatively typical and advanced one among such straight knife grinding machines. However, there are still some deficiencies in such straight knife grinding machines. One is that it can only grind one straight knife at a time, and for large-scale production of straight knives, it cannot meet the production capacity requirements, and the efficiency urgently needs to be improved. The other is that the grinding wheel in the grinding machine usually needs to be replaced with different specifications according to the different materials and hardness of the straight knife to be ground, and the grinding wheel also needs to be replaced after being worn to a certain extent. This makes the grinding wheel often need to be installed and disassembled. Since the grinding wheel is a fragile item, it must be handled with care during handling and installation to prevent cracking and damage. When installing the grinding wheel, a special nut wrench must be used to fasten the grinding wheel, and it must be gradually tightened symmetrically on both sides opposite to the spindle in sequence. The nut should be tightened appropriately. Therefore, the process of replacing and installing the grinding wheel takes a long time. Especially when grinding straight knife blades with multiple varieties and small batches, the replacement of the grinding wheel will have a great impact on the working efficiency of the grinding machine. Summary of the Invention

[0003] Aiming at the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a multi-blade co-grinding grinding machine, which can simultaneously grind multiple straight knives, meet the quality requirements for the installation of the grinding wheel, reduce the time required for grinding wheel replacement, and thus improve the working efficiency of the grinding machine.

[0004] To solve the above technical problems, a multi-blade co-grinding grinder of the present invention includes a bed body, a grinding head seat movably supported on the bed body through the bed body guide rail, and a grinding head supported on the grinding head seat through a vertical guide rail. The grinding head includes a flange seat for installing a grinding wheel, a grinding wheel inner chuck and a grinding wheel outer chuck for clamping and fixing the grinding wheel. At least two rows of mutually parallel electromagnetic chucks are provided on the bed body, and the length direction of each row of electromagnetic chucks is parallel to the length direction of the bed body guide rail. A rotating shaft is provided at the end face of the electromagnetic chuck, and the electromagnetic chuck is supported on the bed body through the rotating shaft. An angle sensor is provided on each row of the electromagnetic chucks; a chuck adjustment and locking device is installed at the end face of the bed body. The chuck adjustment and locking device includes a worm gear fixedly connected to the rotating shaft, and each row of electromagnetic chucks corresponds to a worm gear. A worm meshing with the worm gear is rotatably supported on the adjustment and locking device seat; a worm gear locking mechanism is further provided on the adjustment and locking device seat, and each worm gear corresponds to a worm gear locking mechanism. The worm gear locking mechanism includes a locking block and a locking driver, and the locking driver can drive the locking block to move radially along the worm gear and abut against the worm gear. The axis of the grinding head is vertically arranged above the electromagnetic chuck, and the position of the grinding head axis in the width direction of the bed body corresponds to the middle of the total width A of each row of electromagnetic chucks; the flange seat is installed on the output shaft of the grinding head motor on the grinding head. A plurality of clamping connecting rods are movably provided on the disk body part of the flange seat. The clamping connecting rods are evenly distributed in the circumferential direction of the disk body part. The upper ends of the clamping connecting rods are hinged to the eccentric clamping handle, and the eccentric clamping handle is located above the disk body part of the flange seat. The lower ends of the clamping connecting rods are connected to the connecting chuck. A plurality of connecting convex tab pieces are provided on the outer peripheral surface of the connecting chuck, and the connecting convex tab pieces are evenly distributed in the circumferential direction. A plurality of connecting seats are provided on the upper side surface of the grinding wheel outer chuck, and the connecting seats are evenly distributed in the circumferential direction. The number of the connecting seats is the same as the number of the connecting convex tab pieces. A connecting mortise groove corresponding to the connecting convex tab piece is provided on the connecting seat. The connecting convex tab piece can be rotationally inserted into the connecting mortise groove, and the inner hole of the grinding wheel outer chuck can be sleeved and inserted with the outer periphery of the centering shoulder at the lower end of the flange seat.

[0005] In the above structure, since there are at least two rows of electromagnetic chucks arranged in parallel on the bed body, the length direction of each row of electromagnetic chucks is parallel to the length direction of the bed body guide rail, a rotating shaft is provided at the end face of the electromagnetic chuck, and the electromagnetic chuck is supported on the bed body through the rotating shaft. An angle sensor is provided on each row of the electromagnetic chucks. Then each row of electromagnetic chucks can rotate a certain angle relative to the bed body, so as to meet the requirements of grinding the inclined surface and the side surface of the straight blade edge. And the two rows of electromagnetic chucks are parallel to each other, so the straight blades adsorbed on each row of electromagnetic chucks can be ground simultaneously by one grinding head. Compared with the existing straight knife grinding machine that can only grind one straight blade at a time, the same grinding head can grind at least two straight blades simultaneously, greatly improving the working efficiency. The angle sensor provided on each row of electromagnetic chucks can conveniently, timely and accurately measure the inclination angle of the working surface of the electromagnetic chuck, which is convenient for improving the position accuracy between the inclined surface and the side surface of the straight blade edge and the efficiency of the angle adjustment process, and ensuring the realization of the automation and intelligence of the grinding process.

[0006] Also, since a chuck adjustment and locking device is installed at the end face of the bed body, the chuck adjustment and locking device includes a worm gear fixedly connected to the rotating shaft. Each row of electromagnetic chucks corresponds to a worm gear. The worm gear meshed with the worm gear is rotatably supported on the adjustment and locking device seat. A worm gear locking mechanism is also provided on the adjustment and locking device seat. Each worm gear corresponds to a worm gear locking mechanism. The worm gear locking mechanism includes a locking block and a locking driver. The locking driver can drive the locking block to move radially along the worm gear and press against the worm gear. Then, through the meshing of the worm gear and the worm, the electromagnetic chuck can be conveniently rotated a certain angle relative to the bed body, so that each row of electromagnetic chucks can conveniently adapt to the grinding of the edge surfaces at different angles and switch the ground surface between the inclined surface of the edge and the side surface. After the working angle of the electromagnetic chuck is determined, the worm gear locking mechanism drives the locking block to press against the worm gear through the locking driver to lock the circumferential position of the worm gear, so as to ensure that the corresponding row of electromagnetic chucks maintains the working position and the grinding process proceeds smoothly.

[0007] Also, since the axis of the grinding head is vertically arranged above the electromagnetic chuck, and the position of the grinding head axis in the width direction of the bed body corresponds to the middle of the total width A of each row of electromagnetic chucks, the position of the grinding head arranged can ensure that the same grinding head can simultaneously grind the straight blades to be ground on each row of electromagnetic chucks, and can also ensure that the same grinding head can simultaneously self-grind the working surfaces of each row of electromagnetic chucks to ensure the accuracy of the working surface of the electromagnetic chuck, so as to realize the multi-knife co-grinding of the straight blades and improve the working efficiency.

[0008] Furthermore, a number of connecting tenon pieces are provided on the outer peripheral surface of the connecting chuck, and the connecting tenon pieces are evenly distributed in the circumferential direction. A number of connecting seats are provided on the upper side surface of the outer chuck of the grinding wheel, and the connecting seats are evenly distributed in the circumferential direction. The number of connecting seats is the same as that of the connecting tenon pieces. Connecting tenon grooves corresponding to the connecting tenon pieces are provided on the connecting seats. The connecting tenon pieces can be rotationally inserted into the connecting tenon grooves. After the inner chuck of the grinding wheel and the outer chuck of the grinding wheel are clamped by the connecting bolts and fixedly connected to the grinding wheel as a whole, the outer chuck of the grinding wheel can be connected to the connecting chuck through the connecting tenon grooves and the connecting tenon pieces on the connecting chuck. The connection between the outer chuck of the grinding wheel and the connecting chuck only needs to rotate and insert the two, and the connection process is rapid and convenient. On the contrary, the disassembly process is also equally convenient and rapid.

[0009] Moreover, since the flange seat is installed on the output shaft of the grinding head motor on the grinding head, a number of clamping connecting rods are movably provided on the disk body part of the flange seat, and the clamping connecting rods are evenly distributed in the circumferential direction of the disk body part. The upper ends of the clamping connecting rods are hinged to the eccentric clamping handle, and the eccentric clamping handle is located above the disk body part of the flange seat. The lower ends of the clamping connecting rods are connected to the connecting chuck. The inner hole of the outer chuck of the grinding wheel can be sleeved and inserted into the outer circumference of the centering shoulder at the lower end of the flange seat. Then, by pulling the eccentric clamping handle, the clamping connecting rods can be driven to move up and down, so that the connecting chuck moves up and down relative to the disk body part of the flange seat. When the connecting chuck moves upward relative to the flange seat and the connecting chuck approaches the disk body part of the flange seat, the outer chuck of the grinding wheel connected to the connecting chuck through the connecting tenon pieces on the connecting chuck will approach the disk body part of the flange seat accordingly. Furthermore, the outer side surface of the connecting seat on the outer chuck of the grinding wheel is tightly attached and fixedly connected to the disk body part. The wedging action between the eccentric clamping handle and the disk body part will keep the connecting seat and the flange seat in a fixed connection state. At this time, the inner hole of the outer chuck of the grinding wheel is sleeved and inserted into the outer circumference of the centering shoulder at the lower end of the flange seat to ensure that the outer chuck of the grinding wheel and the flange seat are coaxial, so that the grinding wheel is fixedly connected to the flange seat, realizing the installation and connection between the grinding wheel and the flange seat. The grinding wheel can be directly driven by the grinding head motor through the flange seat installed on the output shaft of the grinding head motor for grinding movement. The entire installation and connection process of the grinding wheel only needs to rotate the grinding wheel to connect the outer chuck of the grinding wheel to the connecting chuck and pull the eccentric clamping handle to fix the outer chuck of the grinding wheel to the flange seat, greatly reducing the time required for grinding wheel replacement and improving the working efficiency of the grinding machine. The fine installation process in which the outer chuck of the grinding wheel needs to be tightly connected to the grinding wheel through the connecting bolts and the inner chuck of the grinding wheel using a special nut wrench is completed before the grinding machine needs to replace the grinding wheel, and there is sufficient time to ensure the installation accuracy and avoid possible cracking and damage during the installation process, so as to ensure the installation quality requirements of the grinding wheel.

[0010] In a preferred embodiment of the present invention, two rows of electromagnetic chucks are provided on the bed body. By adopting this embodiment, the two rows of electromagnetic chucks not only meet the requirements of multi-tool grinding and improving the working efficiency of the grinding machine, but also have relatively low manufacturing costs and better use effects.

[0011] Another preferred embodiment of the present invention is that each electromagnetic chuck in each column is fixedly connected by a rotating shaft. By adopting this embodiment, it can ensure that each electromagnetic chuck in the same column is stably supported longitudinally by the rotating shaft and ensure the consistency of the working angle adjustment of the entire column of electromagnetic chucks.

[0012] Another preferred embodiment of the present invention is that the mounting surface of the angle sensor is parallel to the working surface of the electromagnetic chuck. By adopting this embodiment, the angle sensor can directly detect the angle change of the working surface of the electromagnetic chuck, improving the measurement accuracy.

[0013] A further preferred embodiment of the present invention is that the shaft shoulder on the end face of the worm gear is inserted into the corresponding worm gear support hole on the adjustment locking device seat, a guide groove is provided on the hole wall of the worm gear support hole, and the locking block is movably inserted into the guide groove. By adopting this embodiment, the worm gear can be stably supported, meeting the structural requirements of the locking method of the worm gear locking mechanism, and the provided guide groove provides a guarantee for ensuring the radial movement of the locking block along the worm gear.

[0014] Another further preferred embodiment of the present invention is that the locking driver is a cylinder or an oil cylinder or an electric linear driving device. By adopting this embodiment, it can meet the automatic driving requirements for the locking block to move radially along the worm gear and be in close contact with the worm gear.

[0015] Another further preferred embodiment of the present invention is that the outer end of the worm is connected to the driving motor. By adopting this embodiment, it can conveniently drive the worm to automatically adjust the working angle of the electromagnetic chuck through the worm gear.

[0016] A further preferred embodiment of the present invention is that the eccentric clamping handle includes a handle part and a clamping disc part in the shape of a disc, the upper end of the clamping connecting rod and the hinge axis of the eccentric clamping handle are located on the clamping disc part, and the hinge axis deviates from the axis of the clamping disc part. By adopting this embodiment, the clamping disc part can ensure the eccentric clamping effect on the clamping connecting rod, while the handle part ensures that the clamping disc part can be rotated to achieve the eccentric clamping function.

[0017] Another further preferred embodiment of the present invention is that a nut is screwed at the lower end of the clamping connecting rod, and the nut is embedded in the lower end face of the connecting chuck. By adopting this embodiment, it can facilitate the connection between the lower end of the clamping connecting rod and the connecting chuck.

[0018] Another further preferred embodiment of the present invention is that a limiting part is provided at one end of the connecting tenon piece, the outer diameter of the limiting part is larger than the outer diameter of the connecting tenon piece, and the thickness of the limiting part is larger than the thickness of the connecting tenon piece. By adopting this embodiment, it can facilitate the rotational plug-in connection between the connecting chuck and the outer clamping chuck of the grinding wheel. Description of the Drawings

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments with respect to the multi-blade co-grinding grinder.

[0020] Figure 1 is a schematic structural diagram of a specific embodiment of the multi-blade co-grinding grinder of the present invention;

[0021] Figure 2 is Figure 1 a top view of the relevant part of the electromagnetic chuck in the structure shown;

[0022] Figure 3 is Figure 2 a schematic structural diagram of the chuck adjustment and locking device in the structure shown;

[0023] Figure 4 is Figure 3 a sectional view taken along line A-A in ;

[0024] Figure 5 is Figure 1 a schematic diagram of the structure of the grinding wheel installation and connection at the grinding head part in the structure shown;

[0025] Figure 6 is Figure 5 a schematic structural diagram of the outer chuck of the grinding wheel in the structure shown;

[0026] Figure 7 is Figure 6 a sectional view taken along line B-B in the structure shown;

[0027] Figure 8 is Figure 5 a schematic structural diagram of the connecting chuck in the structure shown;

[0028] Figure 9 is Figure 8 a sectional view taken along line C-C in the structure shown;

[0029] Figure 10 is Figure 5 a schematic structural diagram of the eccentric clamping handle in the structure shown.

[0030] In the figure: 1 - bed body, 2 - rotating shaft, 3 - rotating shaft support, 4 - electromagnetic chuck, 5 - grinding head, 6 - bed body guide rail, 7 - grinding head seat, 8 - vertical guide rail, 9 - chuck adjustment and locking device, 10 - locking driver, 11 - dial, 12 - driving motor, 13 - angle sensor, 14 - sensor support, 15 - adjustment and locking device seat, 16 - worm gear, 17 - worm, 18 - locking block, 19 - guide groove, 20 - grinding head motor, 21 - flange seat, 22 - eccentric clamping handle, 23 - clamping connecting rod, 24 - disk body part, 25 - connecting chuck, 26 - nut, 27 - external grinding wheel chuck, 28 - centering shoulder, 29 - internal grinding wheel chuck, 30 - grinding wheel, 31 - connecting seat, 32 - connecting mortise groove, 33 - connecting tenon piece, 34 - limiting part, 35 - clamping disk part, 36 - handle part. Detailed implementation mode

[0031] In Figure 1 and Figure 2 In the multi - blade co - grinding grinder shown, the bed body 1 is the basic supporting component of this straight - knife grinder. On the upper plane of the bed body 1, two bed body guide rails 6 are installed. The bed body guide rails 6 adopt linear guide pairs. The grinding head seat 7 is movably supported on the bed body guide rails 6. The grinding head 5 completes the grinding feed movement along the bed body guide rails 6 through the horizontal driving device installed on the bed body 1. The grinding head 5 is supported on the grinding head seat 7 through the vertical guide rail 8 and is driven by the vertical driving device installed on the grinding head seat 7 to complete the feed movement of the grinding head 5.

[0032] On the bed body 1, at least two rows of electromagnetic chucks 4 parallel to each other are provided. As a preferred implementation mode, two rows of electromagnetic chucks 4 are provided on the bed body 1. Each row of electromagnetic chucks 4 is located between the two bed body guide rails 6 and its length direction is parallel to the length direction of the bed body guide rails 6. Each row of electromagnetic chucks 4 includes at least one electromagnetic chuck 4. A rotating shaft 2 is provided on the end face of the electromagnetic chuck 4. The electromagnetic chucks 4 in each row of electromagnetic chucks 4 are fixedly connected to each other through the rotating shaft 2. The electromagnetic chuck 4 is supported on the bed body 1 through the rotating shaft 2 and the rotating shaft support 3 installed on the bed body 1; An angle sensor 13 is provided on each row of electromagnetic chucks 4. The angle sensor 13 preferably adopts a general angle detection sensor product that measures the static acceleration of gravity and converts it into an angle value for output. This type of product uses the principle of a capacitive micro - pendulum. When the inclination unit is tilted, the earth's gravity will generate a component of gravity on the corresponding pendulum, and the corresponding capacitance will change. By measuring, amplifying, filtering the capacitance, the inclination angle is obtained after conversion. It is simple to use and convenient to operate, and is an ideal choice in the field of angle measurement. The angle sensor 13 is installed on the sensor support 14. The sensor support 14 is fixedly connected to the rotating shaft 2 at the end. The installation surface of the angle sensor 13 is the upper plane of the sensor support 14, and this plane is parallel to the working surface of the electromagnetic chuck 4.

[0033] The chuck adjustment and locking device 9 is installed on the end face of the bed body 1. SeeFigure 3 and Figure 4 The suction cup adjustment locking device 9 includes a worm gear 16 fixedly connected to the rotating shaft 2, and the shoulder of the end face of the worm gear 16 is inserted into the corresponding worm gear support hole on the adjustment locking device seat 15. Each row of electromagnetic suction cups 4 is correspondingly provided with a worm gear 16, and the worm 17 engaged with the worm gear 16 is rotatably supported on the adjustment locking device seat 15. The outer end of the worm gear 16 is connected to the drive motor 12. The drive motor 12 can drive the corresponding row of electromagnetic suction cups 4 to rotate the installation angle according to the instructions of the grinder control system to adapt to the self-grinding of the electromagnetic suction cup 4, the grinding of the cutting edge bevel or side of the straight blade being ground; a worm gear locking mechanism is also provided on the adjustment locking device seat 15, and each worm gear 16 is correspondingly provided with a worm gear locking mechanism. The worm gear locking mechanism The structure includes a locking block 18 and a locking driver 10. A guide groove 19 is provided on the wall of the worm gear support hole on the adjustment locking device seat 15. The locking block 18 is movably inserted into the guide groove 19. The locking driver 10 is preferably a cylinder. The piston rod end of the cylinder contacts the locking block 18 through the push rod. The locking driver 10 can drive the locking block 18 to move radially along the worm gear 16 and adhere to the circumferential surface of the corresponding shoulder on the worm gear 16 to lock the circumferential position of the worm gear 16, so that the electromagnetic chuck 4 maintains the adjusted working position; a dial 11 is installed on the rotating shaft 2. The dial 11 is located at the outer end of the worm gear 16, and the angle of the working position of the electromagnetic chuck 4 is intuitively indicated by a pointer installed on the adjustment locking device seat.

[0034] The axis of the grinding head 5 is vertically arranged above the electromagnetic suction cup 4. The position of the axis of the grinding head 5 in the width direction of the bed 1 corresponds to the middle of the total width A of each row of electromagnetic suction cups 4. Grinding is performed through the end face of the grinding wheel 30, and the diameter of the grinding wheel 30 corresponds to the width of the ground surface.

[0035] like Figure 5 As shown, the grinding head 5 includes a flange seat 21 for mounting a grinding wheel 30 and an inner grinding wheel chuck 29 and an outer grinding wheel chuck 27 for clamping and fixing the grinding wheel 30. The flange seat 21 is mounted on the output shaft of the grinding head motor 20 on the grinding head 5. The flange seat 21 includes a disc-shaped disc body 24 and a centering shoulder 28 located below the disc body 24 and concentric with the inner hole.

[0036] The inner chuck 29 and the outer chuck 27 of the grinding wheel used to clamp the grinding wheel 30 are used to clamp the grinding wheel 30 in the axial direction and fix the grinding wheel 30 as a whole through connecting bolts. A plurality of clamping connecting rods 23 are provided on the disk body 24 of the flange seat 21 so as to move up and down in the axial direction. Each clamping connecting rod 23 is evenly distributed along the circumference of the disk body 24. The number of clamping connecting rods 23 is two to six, and three are shown in the figure. The upper end of the clamping connecting rod 23 is hinged to the eccentric clamping handle 22, and the eccentric clamping handle 22 is located above the disk body 24 of the flange seat 21. The lower end of the clamping connecting rod 23 is connected to the connecting chuck 25. As a preferred embodiment, the eccentric clamping handle 22 is as shown in FIG.Figure 10 The figure shows a handle portion 36 and a disc-shaped clamping disc portion 35. The hinge axis between the upper end of the clamping connecting rod 23 and the eccentric clamping handle 22 is located on the clamping disc portion 35, and the hinge axis deviates from the axis of the clamping disc portion 35. The distance between the hinge axis and the axis of the clamping disc portion 35 determines the up and down stroke of the clamping connecting rod 23. A nut 26 is screwed on the lower end of the clamping connecting rod 23. The nut 26 is embedded in the lower end surface of the connecting clamping disc 25. The lower end of the nut 26 is hexagonal in shape, and a nut embedding groove corresponding to the shape of the nut 26 is provided on the lower end surface of the connecting clamping disc 25.

[0037] See also Figure 8 and Figure 9 A plurality of connecting tenon pieces 33 are provided on the outer circumferential surface of the connecting chuck 25. The number of the connecting tenon pieces 33 ranges from two to six, and three are shown in the figure. The connecting tenon pieces 33 are evenly distributed along the circumference, and a limiting portion 34 is provided at one end of the connecting tenon piece 33. The outer diameter of the limiting portion 34 is larger than the outer diameter of the connecting tenon piece 33, and the thickness of the limiting portion 34 is larger than the thickness of the connecting tenon piece 33; see Figure 6 and Figure 7 A plurality of connecting seats 31 are provided on the upper side surface of the outer chuck 27 of the grinding wheel. The connecting seats 31 are evenly distributed along the circumferential direction. The number of the connecting seats 31 is the same as the number of the connecting ridges 33. The connecting seats 31 are provided with connecting grooves 32 corresponding to the connecting ridges 33. The connecting ridges 33 can be inserted into the connecting grooves 32 by rotation. The inner hole of the outer chuck 27 of the grinding wheel can be connected with the outer periphery of the centering shoulder 28 at the lower end of the flange seat 21 to ensure that the grinding wheel 30 is coaxial with the flange seat 21.

[0038] When replacing and installing the grinding wheel 30 on the grinding machine, it is only necessary to rotate the grinding wheel 30 so that the grinding wheel outer chuck 27 and the connecting chuck 25 are connected to the corresponding connecting groove 32 through the connecting convex tenon 33 and pull the eccentric clamping handle 22 to fix the grinding wheel outer chuck 27 and the flange seat 21. The reverse operation can be performed when disassembling, which greatly reduces the time required for replacing the grinding wheel 30 and improves the working efficiency of the grinder.

[0039] The above lists only some preferred embodiments of the present invention, but the present invention is not limited thereto and is susceptible to numerous improvements and variations. For example, instead of having two rows of electromagnetic chucks 4 on the bed 1, three or four rows of electromagnetic chucks 4 can be provided to accommodate the simultaneous grinding of more straight blades and improve production efficiency. The locking actuator 10 can also be an oil cylinder or an electric linear drive rather than a pneumatic cylinder. Such improvements and variations based on the basic principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A multi-blade common grinding machine, comprising a machine body (1), a grinding head seat (7) movably supported on the machine body (1) through a machine body guide rail (6), and a grinding head (5) supported on the grinding head seat (7) through a vertical guide rail (8). The grinding head (5) includes a flange seat (21) for mounting a grinding wheel (30), a grinding wheel inner chuck (29) and a grinding wheel outer chuck (27) for clamping and fixing the grinding wheel (30), and is characterized in that: On the bed body (1), there are at least two rows of electromagnetic chucks (4) arranged in parallel with each other. The length direction of each row of electromagnetic chucks (4) is parallel to the length direction of the bed body guide rail (6). A rotating shaft (2) is provided at the end face of the electromagnetic chuck (4), and the electromagnetic chuck (4) is supported on the bed body (1) through the rotating shaft (2). An angle sensor (13) is provided on each row of the electromagnetic chucks (4); A chuck adjusting and locking device (9) is installed at the end face of the bed body (1). The chuck adjusting and locking device (9) includes a worm gear (16) fixedly connected to the rotating shaft (2). Each row of electromagnetic chucks (4) corresponds to a worm gear (16). The worm (17) meshing with the worm gear (16) is rotatably supported on the adjusting and locking device seat (15); A worm gear locking mechanism is further provided on the adjusting and locking device seat (15). Each worm gear (16) corresponds to a worm gear locking mechanism. The worm gear locking mechanism includes a locking block (18) and a locking driver (10). The locking driver (10) can drive the locking block (18) to move radially along the worm gear (16) and press against the worm gear (16). The axis of the grinding head (5) is vertically arranged above the electromagnetic chuck (4). The position of the axis of the grinding head (5) in the width direction of the bed body (1) corresponds to the middle of the total width A of each row of electromagnetic chucks (4); The flange seat (21) is installed on the output shaft of the grinding head motor (20) on the grinding head (5). A number of clamping connecting rods (23) are movably provided on the disk body part (24) of the flange seat (21). The clamping connecting rods (23) are evenly distributed along the circumferential direction of the disk body part (24). The upper end of the clamping connecting rod (23) is hinged to the eccentric clamping handle (22). The eccentric clamping handle (22) is located above the disk body part (24) of the flange seat (21). The lower end of the clamping connecting rod (23) is connected to the connecting chuck (25). A number of connecting tenon pieces (33) are provided on the outer circumferential surface of the connecting chuck (25). The connecting tenon pieces (33) are evenly distributed along the circumferential direction. A number of connecting seats (31) are provided on the upper side surface of the outer chuck (27) of the grinding wheel. The connecting seats (31) are evenly distributed along the circumferential direction. The number of connecting seats (31) is the same as the number of connecting tenon pieces (33). A connecting tenon groove (32) corresponding to the connecting tenon piece (33) is provided on the connecting seat (31). The connecting tenon piece (33) can be rotationally inserted into the connecting tenon groove (32). The inner hole of the outer chuck (27) of the grinding wheel can be sleeved and inserted with the outer circumference of the centering shoulder (28) at the lower end of the flange seat (21); There are two rows of electromagnetic chucks (4) on the bed body (1); The mounting surface of the angle sensor (13) is parallel to the working surface of the electromagnetic chuck (4).

2. The multi-blade co-grinding grinder according to claim 1, characterized in that: In each row of the electromagnetic chucks (4), the electromagnetic chucks (4) are fixedly connected to each other through the rotating shaft (2).

3. The multi-blade co-grinding grinder according to claim 1, characterized in that: The shaft shoulder at the end face of the worm gear (16) is inserted into the corresponding worm gear support hole on the adjusting and locking device seat (15). A guide groove (19) is provided on the hole wall of the worm gear support hole. The locking block (18) is movably inserted into the guide groove (19).

4. The multi-blade co-grinding grinder according to claim 1, characterized in that: The locking driver (10) is a cylinder or an oil cylinder or an electric linear driving device.

5. The multi-blade co-grinding grinder according to claim 1, characterized in that: The outer end of the worm (17) is connected to the driving motor (12).

6. The multi-blade co-grinding grinder according to claim 1, wherein: The eccentric clamping handle (22) includes a handle portion (36) and a clamping disc portion (35) in the shape of a disc. The upper end of the clamping connecting rod (23) and the hinge axis of the eccentric clamping handle (22) are located on the clamping disc portion (35), and the hinge axis is offset from the axis of the clamping disc portion (35).

7. The multi-blade co-grinding grinder according to claim 1, characterized in that: A nut (26) is screwed onto the lower end of the clamping connecting rod (23), and the nut (26) is embedded in the lower end face of the connecting chuck (25).

8. The multi-blade co-grinding grinder according to claim 1, characterized in that: A limiting portion (34) is provided at one end of the connecting tenon piece (33). The outer diameter of the limiting portion (34) is larger than the outer diameter of the connecting tenon piece (33), and the thickness of the limiting portion (34) is larger than the thickness of the connecting tenon piece (33).

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