CN209812007U - A magnetic needle magnetic grinding device for workpieces with complex shapes - Google Patents

Abstract

The utility model relates to a magnetic needle magnetic grinding device for workpieces with complex shapes, which comprises a bench drill, a workpiece clamping mechanism and a magnetic needle magnetic grinding mechanism; the bottom of the working shaft of the bench drill is connected with a workpiece clamping mechanism, and a magnetic needle magnetic grinding mechanism is fixed on a base of the bench drill; the workpiece clamping mechanism comprises a chuck, a connecting rod, a rubber sleeve, a fastening bolt, a clamping bolt and a door-shaped support frame; the chuck is fixedly connected with the bottom end of the bench drill working shaft, the top of the connecting rod is fixed with the bench drill working shaft through the chuck, the bottom of the connecting rod is fixed with a square frame, the top of the portal support frame is connected with the square frame through a fastening bolt and a fastening nut, the two sides of the portal support frame are in threaded connection with clamping bolts, and the clamping bolts clamp fixed workpieces. The advantages are that: the workpiece clamping mechanism and the magnetic needle magnetic grinding mechanism rotate simultaneously, so that the grinding speed is increased.

Description

A magnetic needle magnetic grinding device for workpieces with complex shapes

technical field

The utility model belongs to the field of magnetic needle magnetic grinding, in particular to a magnetic needle magnetic grinding device for complex-shaped workpieces.

Background technique

With the continuous improvement of manufacturing technology, complex shapes and tiny precision parts are constantly being produced and applied to practice, including some applications in special fields, such as aviation, aerospace, navigation and other fields. After processing small and complex parts, some processing textures will remain on the surface of the workpiece, and edge burrs will also occur on the edges and holes. When used in special fields, its performance will be greatly affected. Traditional processing methods, such as grinding with files and sandpaper, can also remove these processing textures and burrs, but they are labor-intensive, time-consuming and labor-intensive, and the efficiency is too low, so they are only suitable for single-piece small-batch production. Existing methods, such as abrasive flow method, extrusion honing and magnetic grinding method. Abrasive flow processing needs to make corresponding molds according to the shape of the workpiece. Extrusion honing can only process some thick-walled parts. The processing efficiency of magnetic grinding method is not high, and the processing is uneven. In contrast, when processing complex-shaped parts and tiny precision parts, the magnetic needle magnetic grinding method is superior to other processing methods. But there are also some problems, such as uneven grinding of parts with complex shapes, and during the grinding process, as the speed increases, it is easy to collide with the cylinder wall to destroy the original shape, and the efficiency is low. Therefore, a method and device are needed to solve these problems.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide a magnetic needle magnetic grinding device for complex-shaped workpieces, which can achieve uniform grinding of complex-shaped workpieces and improve processing efficiency without damaging the complex-shaped workpieces.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A magnetic needle magnetic grinding device for complex-shaped workpieces, comprising a bench drill, a workpiece clamping mechanism, and a magnetic needle magnetic grinding mechanism; a workpiece clamping mechanism is connected to the bottom of the working shaft of the bench drill, and a magnetic needle magnetic grinding mechanism is fixed on the base of the bench drill;

The workpiece clamping mechanism includes a chuck, a connecting rod, a rubber sleeve, a fastening bolt, a clamping bolt, and a door-shaped support frame; the chuck is fixedly connected to the bottom end of the working shaft of the bench drill, and the top of the connecting rod is connected to the table through the chuck. The drilling shaft is fixed, the bottom is fixed with a square frame, the top of the door-shaped support frame is connected with the square frame by fastening bolts and fastening nuts, the two sides of the door-shaped support frame are threaded with clamping bolts, and the bottom of the clamping bolts is fixed with a rubber sleeve , the clamping bolt clamps and fixes the workpiece through the rubber sleeve;

The magnetic needle magnetic grinding mechanism includes a box body, a magnetic pole plate motor, a motor support frame, a magnetic pole plate, a magnetic pole, an insulating support plate, a non-magnetic container bucket, and a rubber fixing ring. The box body is fixed on the base of the bench drill, and the box body An insulating support plate is fixed on the top, and the pole disk motor is fixed on the bottom of the box through the motor support frame. The output shaft of the pole disk motor is connected to the pole disk, and the pole disk motor drives the pole disk to rotate. The pole disk is fixed with magnetic poles; the rubber fixing ring is fixed On the insulating support plate, the non-magnetic conducting container barrel is placed on the insulating supporting plate and fixed by a rubber fixing ring; the non-magnetic conducting container barrel is filled with magnetic needles.

The magnetic pole is a columnar magnetic pole with a cross groove on the top.

The arrangement of the magnetic poles on the magnetic pole disk is that the N pole is upward and the S pole is downward.

It also includes an auxiliary rotating handle. The auxiliary rotating handle includes a handle connecting rod, a handle connecting beam, a connecting cylinder, and a connecting rod fastening nut. The two ends of the handle connecting beam are respectively fixedly connected with the handle connecting rod and the connecting cylinder. To connect, the connecting cylinder is inserted into the connecting rod, and the connecting rod is fixed in the connecting cylinder through the connecting rod fastening nut connected to the side of the connecting cylinder.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model adopts the workpiece clamping mechanism and cooperates with the magnetic needle magnetic grinding mechanism to uniformly grind workpieces with complex shapes. The workpiece clamping mechanism and the magnetic needle magnetic grinding mechanism rotate at the same time, which improves the grinding speed and prevents the workpiece from colliding with the barrel wall. In case of damage to its original shape, ensure the grinding quality. Moreover, the workpiece with small mass will not leave the processing area under the action of the swirling flow, which improves the processing efficiency; the square frame and the door-shaped support frame are relatively fixed and movable, which increases the number of collisions between the workpiece and the magnetic needle, and enhances the grinding effect. , improving the grinding efficiency. The setting and arrangement of the magnetic poles increase the magnetic field gradient and magnetic field intensity, and the processing efficiency is further improved.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the front view of the utility model.

Fig. 3 is a right view of the utility model.

Fig. 4 is a left view of the utility model.

Fig. 5 is a structural schematic diagram of a magnetic needle magnetic grinding mechanism.

Fig. 6 is a structural schematic diagram of the workpiece clamping mechanism.

Fig. 7 is a front view of the workpiece clamping mechanism.

Fig. 8 is a structural schematic diagram of the auxiliary rotating handle.

Fig. 9 is a perspective view of a magnetic pole.

Fig. 10 is a schematic diagram of the arrangement of magnetic poles on the magnetic pole plate.

In the figure: 1-working shaft 2-collet 3-workpiece clamping mechanism 4-non-magnetic container barrel 5-rubber fixing ring 6-cabinet 7-base 8-total time setting button 9-forward and reverse time setting Fixed button 10-Indicator light 11-Switch 12-Speed adjustment button 13-Start button 14-Emergency stop button 15-Work shaft up and down adjustment handle 16-Speed speed adjustment handle 17-Position fixing nut 18-Work shaft position fixing rod 19-Drive Motor 20-retaining ring 21-column 22-drive motor start button 23-drive motor emergency stop button 24-magnetic pole 25-magnetic pole disc 26-motor support frame 27-magnetic pole disc motor 28-square frame 29-connecting rod 30-fastening Nut 31-fastening bolt 32-door support frame 33-workpiece 34-rubber sleeve 1 35-clamping bolt 1 36-rubber sleeve 2 37-clamping bolt 2 38-handle connecting rod 39-handle connecting beam 40-connection Barrel 41—connecting rod fastening nut.

Detailed ways

The utility model is described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the utility model is not limited to the following embodiments.

See Fig. 1-Fig. 7, a kind of magnetic needle magnetic force grinding device for complex shape workpiece, including bench drill, workpiece clamping mechanism 3, magnetic needle magnetic force grinding mechanism; bench drill working shaft 1 bottom is connected with workpiece clamping mechanism 3, bench drill A magnetic needle magnetic grinding mechanism is fixed on the base 7; the bench drill can adopt a conventional electric bench drill, and the original drill bit is taken off during use, and the workpiece clamping mechanism 3 is installed. The bench drill is equipped with a work shaft up and down adjustment handle 15, a speed adjustment handle 16, a position fixing nut 17, a work shaft position fixing rod 18, a drive motor 19, a retaining ring 20, a column 21, a drive motor start button 22, and a drive motor emergency stop Button 23, base 7, the top of column 21 is connected with drive motor 19, the bottom is fixedly connected with base 7, retaining ring 20 is fixed on the column 21, drive motor start button 22, drive motor emergency stop button 23 are used to start and temporarily close the motor , The position fixing nut 17 and the working shaft position fixing rod 18 are used to limit the position of the working shaft 1, and the driving motor 19 drives the working shaft 1 and drives the chuck 2 to rotate. Press the driving motor start button 22 to start the driving motor 19, and the working shaft 1 is rotated under the drive of the driving motor 19. When stopping, press the driving motor emergency stop button 23 to adjust the rotating speed adjustment handle 16, and adjust the driving motor 19 rotating speeds, thereby Adjust the speed of the working axis 1. Adjust working shaft up and down adjusting handle 15, can make working shaft 1 telescopic up and down, fix its position with the position fixing nut 17 on the working shaft position fixed rod 18.

See Fig. 1, Fig. 6, Fig. 7, workpiece clamping mechanism 3 comprises chuck 2, connecting rod 29, rubber sleeve, fastening bolt 31, clamping bolt, door-shaped support frame 32; Chuck 2 and bench drill working shaft 1 The bottom end is fixedly connected, the top of the connecting rod 29 is fixed to the working shaft 1 of the bench drill through the chuck 2, the bottom is fixed with a square frame 28, and the top of the door-shaped support frame 32 is connected to the square frame 28 through fastening bolts 31 and fastening nuts 30 The two sides of the door-shaped support frame 32 are threaded with clamping bolts, and the bottom of the clamping bolts is fixed with a rubber sleeve. The clamping bolt clamps and fixes the workpiece 33 through the rubber sleeve. The rubber sleeve can prevent damage to the workpiece 33; The chuck 2 that comes with the drill. Square frame 28 and connecting rod 29 can be integrated structure. See Fig. 7, the right side wall of door-shaped support frame 32 is threadedly connected with clamping bolt one 35, the bottom end of clamping bolt one 35 is connected with rubber sleeve one 34, the left side wall of door-shaped support frame 32 is threadedly connected with clamping bolt two 37, The bottom end of the clamping bolt 2 37 is connected with a rubber sleeve 2 36.

See Figures 1-5, the magnetic needle magnetic grinding mechanism includes a box body 6, a magnetic pole plate motor 27, a motor support frame 26, a magnetic pole plate 25, a magnetic pole 24, an insulating support plate, a non-magnetic container barrel 4, a rubber fixing ring 5, and a box The body 6 is fixed on the base 7 of the bench drill, the top of the box body 6 is fixed with an insulating support plate, the pole disk motor 27 is fixed on the bottom of the box body 6 by the motor support frame 26, and the output shaft of the pole disk motor 27 is connected with the pole disk 25. The magnetic pole plate motor 27 drives the magnetic pole plate 25 to rotate, and the magnetic pole plate 25 is fixed with a magnetic pole 24; the rubber fixed ring 5 is fixed on the insulating support plate, and the non-magnetic container barrel 4 is placed on the insulating support plate, and is fixed by the rubber fixed ring 5 ; The non-magnetic container barrel 4 is filled with a magnetic needle. The magnetic field lines of the magnetic poles 24 can penetrate the insulating support plate to form a closed magnetic circuit in the non-magnetically conductive container barrel 4 . The magnetic pole plate motor 27 drives the magnetic pole plate 25 to rotate, and the magnetic needle in the non-magnetic container barrel 4 rotates with the magnetic pole plate 25 under the action of the magnetic field force generated by the magnetic pole 24 on the magnetic pole plate 25 . The box body 6 is provided with a total time setting button 8 , a forward and reverse time setting button 9 , an indicator light 10 , a switch 11 , a speed adjustment button 12 , a start button 13 , and an emergency stop button 14 .

9 and 10, the magnetic poles 24 are cylindrical magnetic poles 24 with top cross slots, and the magnetization directions of the cylindrical magnetic poles 24 are all magnetized in the axial direction of the ungrooved part. A stepped magnetic field intensity is generated in the magnetically permeable container barrel 4, and the magnetic field intensity is enhanced.

As shown in Fig. 10, the magnetic poles 24 on the magnetic pole plate 25 are arranged in such a way that the N pole is upward and the S pole is downward. Through the mutual repulsion between the magnetic poles and the same poles, the magnetic field lines formed by the magnetic poles 24 on the magnetic pole plate 25 are relatively half The magnetic field lines formed by the magnetic poles with the N pole upward and half of the N pole downward are higher.

As shown in Fig. 8, the magnetic needle magnetic grinding device for workpieces with complex shapes also includes an auxiliary rotating handle. They are respectively fixedly connected with the handle connecting rod 38 and the connecting cylinder 40, the top of the handle connecting rod 38 is connected with the collet 2, the connecting cylinder 40 is plugged with the connecting rod 29, and the connecting rod 29 is fastened to the nut through the connecting rod connected to the side of the connecting cylinder 40 41 is fixed in the connecting cylinder 40.

See Fig. 1-Fig. 10, a kind of magnetic needle magnetic force grinding method to complicated shape workpiece 33, comprises the following steps:

1) The workpiece 33 is clamped and fixed on the door-shaped support frame 32 by clamping bolts and rubber sleeves, and the mixed solution of magnetic needles, grinding liquid and water is filled in the non-magnetic container barrel 4, and the pole plate motor 27 drives the pole plate 25 Rotate, the magnetic needle in the non-magnetic container barrel 4 rotates with the magnetic pole plate 25 under the effect of the magnetic field force that the magnetic pole 24 on the magnetic pole plate 25 produces, adjusts the bench drill, makes the workpiece 33 drop in the non-magnetic container barrel 4, and drives The workpiece 33 rotates; the magnetic induction lines of the magnetic poles 24 on the magnetic pole plate 25 penetrate the insulating support plate to form a closed magnetic circuit in the non-magnetically conductive container barrel 4, and the magnetic pole plate motor 27 rotates to drive the magnetic pole plate 25 to rotate, and the magnetic pole plate 25 rotates in the non-magnetically conductive container. A rotating magnetic field is formed in the barrel 4, and under the action of the magnetic field force, the magnetic needle rotates with the magnetic pole plate 25;

2) The workpiece clamping mechanism 3 is directly connected to the working shaft 1 of the bench drill through its connecting rod 29 to grind the workpiece 33. During the grinding process, when the fastening bolt 31 and the fastening nut 30 are in an untightened state, The workpiece 33 rotates freely under the effect of the impact force produced by the mixed solution swirl in the non-magnetically conductive container barrel 4 and the magnetic needle colliding with the workpiece; Driven by the working shaft 1, it rotates. The workpiece 33 in the non-magnetic container barrel 4 is constantly collided, scratched and rolled by the rotating magnetic needle, the edges and burrs on the edge of the workpiece 33 are removed, and the protrusions on the surface of the workpiece 33 are continuously cut.

3) The workpiece clamping mechanism 3 is indirectly fixed on the working shaft 1 of the bench drill through the auxiliary rotating handle to grind the workpiece 33. During the grinding process, the workpiece clamping mechanism 3 clamps the workpiece 33 around the non-magnetic container barrel The center of 4 makes revolution motion. The revolving motion of the workpiece clamping mechanism 3 can be the same as or opposite to the rotation direction of the magnetic pole plate 25, and the fastening bolts 31 and nuts 30 of the workpiece clamping mechanism are always in a tightened state. The revolving motion of the workpiece clamping mechanism 3 increases the number of collisions between the workpiece 33 and the magnetic needle, and improves the processing efficiency of the workpiece 33 . When the revolution movement of the workpiece clamping mechanism 3 is in the same direction as the rotation direction of the magnetic pole plate 25, the workpiece clamping mechanism 3 can promote the swirling flow in the non-magnetic container barrel 4, making the movement of the magnetic needle more intense. When the revolution movement of the workpiece clamping mechanism 3 is opposite to the movement direction of the magnetic pole plate 2, the collision force between the magnetic needle and the workpiece 33 increases, and the cutting and removing effect on the surface of the workpiece 33 is enhanced.

Implementation steps:

Clamp and tighten the 16×30mm workpiece 33 by tightening the clamping bolts. According to actual needs, firstly select whether the workpiece clamping mechanism 3 is directly fixed on the working shaft 1 of the bench drill or indirectly fixed on the bench drill through the auxiliary handle. On the working axis 1, we choose the workpiece clamping mechanism 3 to be directly fixed on the workpiece spindle 1, and then choose whether the workpiece 33 rotates freely under the action of the swirling flow or rotates under the action of the bench drill working axis 1, and tighten the fastening bolt 31 , select the workpiece 33 to rotate under the action of the drive motor 19, and the square frame 28 and the door-shaped support frame 32 become fixedly connected.

Adjust the working shaft up and down adjustment handle 15, workpiece 33 is transferred to the suitable processing area, on the working shaft position fixing rod 18, the position fixing nut 17 is tightened, and the position of the working shaft 1 is fixed.

Will The magnetic needle and the 3000ml grinding liquid are put into the non-magnetic container bucket 4. Unscrew the switch 11, connect the magnetic needle magnetic grinding device to the power supply, and the indicator light 10 can observe whether the power supply is connected; adjust the total time setting button 8, and set the total grinding time for 10 minutes; adjust the forward and reverse time setting button 9, set Set the forward and reverse time for 2 minutes; adjust the speed adjustment knob to set the speed at 1000r/min; press the start button to start grinding.

Press the driving motor start button 22, start the driving motor 19, adjust the rotating speed adjustment handle 16, set the rotating speed of the workpiece 33 at 60r/min, when the processing time is up, press the driving motor emergency stop button 23, the workpiece 33 stops rotating, and complete grind.

Claims (4)

1. A magnetic needle magnetic grinding device to complex shape workpieces is characterized in that it comprises a bench drill, a workpiece clamping mechanism, and a magnetic needle magnetic grinding mechanism; the bottom of the bench drill working shaft is connected with a workpiece clamping mechanism, and is fixed on the base of the bench drill There is a magnetic needle magnetic grinding mechanism; The workpiece clamping mechanism includes a chuck, a connecting rod, a rubber sleeve, a fastening bolt, a clamping bolt, and a door-shaped support frame; the chuck is fixedly connected to the bottom end of the working shaft of the bench drill, and the top of the connecting rod is connected to the table through the chuck. The drilling shaft is fixed, the bottom is fixed with a square frame, the top of the door-shaped support frame is connected with the square frame by fastening bolts and fastening nuts, the two sides of the door-shaped support frame are threaded with clamping bolts, and the bottom of the clamping bolts is fixed with a rubber sleeve , the clamping bolt clamps and fixes the workpiece through the rubber sleeve; The magnetic needle magnetic grinding mechanism includes a box body, a magnetic pole plate motor, a motor support frame, a magnetic pole plate, a magnetic pole, an insulating support plate, a non-magnetic container bucket, and a rubber fixing ring. The box body is fixed on the base of the bench drill, and the box body An insulating support plate is fixed on the top, and the pole disk motor is fixed on the bottom of the box through the motor support frame. The output shaft of the pole disk motor is connected to the pole disk, and the pole disk motor drives the pole disk to rotate. The pole disk is fixed with magnetic poles; the rubber fixing ring is fixed On the insulating support plate, the non-magnetic conducting container barrel is placed on the insulating supporting plate and fixed by a rubber fixing ring; the non-magnetic conducting container barrel is filled with magnetic needles. 2 . A magnetic needle magnetic grinding device for workpieces with complex shapes according to claim 1 , wherein the magnetic poles are columnar magnetic poles with cross grooves on the top. 3 . 3 . The magnetic needle magnetic grinding device for workpieces with complex shapes according to claim 1 , wherein the arrangement of the magnetic poles on the magnetic pole disk is that the N pole is upward and the S pole is downward. 4 . 4. A magnetic needle magnetic grinding device for workpieces with complex shapes according to claim 1, characterized in that it also includes an auxiliary rotating handle, the auxiliary rotating handle includes a handle connecting rod, a handle connecting beam, a connecting cylinder, and a connecting rod fastening Nut, the two ends of the handle connecting beam are fixedly connected with the handle connecting rod and the connecting cylinder respectively, the top of the handle connecting rod is connected with the chuck, the connecting cylinder is plugged with the connecting rod, and the connecting rod is fixed by the connecting rod fastening nut connected with the side of the connecting cylinder in the connection barrel.