CN108555764A - Magnetic conductive tube internal grinding burnishing device - Google Patents

Abstract

The invention belongs to magnetic grinding technique fields, more particularly, to a kind of magnetic conductive tube internal grinding burnishing device, including bed piece, spindle box on this bed piece is set, the chuck on this spindle box is set, the mobile sliding box being arranged on bed piece, control the leading screw and handwheel of this movement sliding box movement, it is characterized in that being equipped with fixed seat in mobile sliding box, it is provided with motor in this fixed seat, cross inner surface burnishing device is connected with by shaft coupling and motor output shaft.The configuration of the present invention is simple, it is easy to operate, cross magnetic pole is arranged using the inner surface in magnetic conduction pipe fitting, magnetic induction line close to four magnetic pole heads of pipe is denser, and magnetic induction intensity is relatively large, and cross magnetic pole does circle rotation movement under the drive of motor, to the linear movement for making magnetic abrasive spin in magnetic conduction pipe fitting, evenly to the place to go of workpiece initial surface Wave crest and wave trough, the workpiece surface appearance more finishing after processing significantly improves processing efficiency.

Description

Magnetic tube inner surface grinding and polishing device

technical field

The invention belongs to the technical field of magnetic grinding, and in particular relates to a grinding and polishing device for the inner surface of a magnetic tube.

Background technique

With the continuous advancement of science and technology, magnetic pipe fittings are constantly being used in various fields, such as aerospace, food industry, machinery field, chemical equipment, atomic energy industry, and the demand for their surface quality in these fields is also increasing. High, the traditional processing method is inefficient and the surface quality is not ideal, especially the polishing and grinding of the inner surface is greatly affected by objective factors such as pipe diameter and processing method.

The magnetic grinding technology is used to grind the inner surface of the magnetic pipe fitting, which has high precision and good polishing effect, and can solve the problem of difficult processing of the inner surface of the magnetic pipe fitting. The quality of the magnetic grinding process depends on the extrusion and characterization of the magnetic abrasive grains and the workpiece and the speed of the abrasive renewing and rolling, that is, the denser the magnetic induction lines, the stronger the magnetic induction, the greater the grinding pressure, and the better the grinding effect. At present, the usual method of processing the inner surface of the magnetic tube is to set a single square magnetic pole N-S inside the magnetic tube. The inner wall of the magnetic tube is affected by the magnetization of the magnetic pole, and a magnetic field is formed between the inner wall of the magnetic tube and the magnetic pole to meet the conditions of magnetic grinding. . Since this setting will be affected by the inner diameter of the tube and the size of the magnetic pole, if the tube diameter is too large or the magnetic pole is too small, the distance between the magnetic pole and the surface to be processed will be large, and the distance between N-S will be long, so that the formed external magnetic induction lines will be sparse. , the effective magnetization area is small, so that the magnetic field force on the magnetic abrasive is small.

Contents of the invention

The object of the present invention is to provide a grinding and polishing device for the inner surface of a magnetic tube with simple structure, high grinding efficiency and high surface polishing quality.

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

The magnetic tube inner surface grinding and polishing device of the present invention comprises a machine bed, a spindle box arranged on the machine bed, a chuck arranged on the spindle box, a moving slide box arranged on the machine bed, and a control The screw and the handwheel that the mobile slide box moves are characterized in that a fixed seat is provided on the mobile slide box, and a motor is arranged on the fixed seat through a baffle plate, and the motor is connected with the motor through a coupling. The output shaft is connected with a cross-shaped inner surface polishing device,

The cross-shaped inner surface polishing device includes a magnetic pole shaft, a cross-shaped magnetic pole frame arranged at the end of the magnetic pole shaft, and magnetic pole seats respectively arranged at the four ends of the cross-shaped magnetic pole frame. poles on a pole holder.

The magnetic poles on the cross-shaped magnetic pole frame are symmetrically arranged up and down and symmetrically arranged left and right, a pair of magnetic poles arranged symmetrically up and down are mutually opposite magnetic poles, and the magnetic poles arranged left and right symmetrically are mutually opposite magnetic poles.

The heads of the four magnetic poles on the cross-shaped magnetic pole frame are arc-shaped.

Advantages of the present invention:

The magnetic tube inner surface grinding and polishing device of the present invention is simple in structure and easy to operate. The inner surface of the magnetic tube is provided with cross-shaped magnetic poles, and the magnetic poles are installed on four magnetic pole seats. The four magnetic pole heads are arc-shaped magnetic poles. Make the magnetic pole head closer to the tube wall, the magnetic induction lines of the magnetic poles are from the N pole to the S pole respectively, the magnetic induction lines of the four magnetic pole heads close to the tube are denser, the magnetic induction intensity is relatively large, and the distance between the adjacent opposite magnetic poles The magnetic induction lines between the magnetic poles are denser than that of a single magnetic pole, that is, the grinding pressure of the magnetic abrasive is greater, the effective magnetization area is larger, and the magnetization effect is better; Give the movement, so that the magnetic abrasive can make a spiral linear movement in the magnetic pipe, and the removal of the peaks and valleys on the original surface of the workpiece is more uniform, and the surface morphology of the processed workpiece is smoother, which significantly improves the processing efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a top view of Fig. 1 of the present invention.

Fig. 3 is a schematic structural view of a cross-shaped inner surface polishing device of the present invention.

Fig. 4 is a schematic diagram of the structure of the cross-shaped inner surface polishing device of the present invention in the magnetic tube.

Detailed ways

The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1-4, the grinding and polishing device for the magnetic tube inner surface of the present invention includes a machine bed 11, a spindle box 12 arranged on the machine bed 11, a chuck 1 arranged on the spindle box 12, The mobile slide box 9 arranged on the bed 11 of the machine tool, the screw 8 and the hand wheel 10 that control the movement of the mobile slide box 9 are characterized in that a fixed seat is provided on the mobile slide box 9 7. A motor 6 is provided on the fixed seat 7 through a baffle plate 5, and a cross-shaped inner surface polishing device is connected to the output shaft 4 of the motor 6 through a coupling 3,

The cross-shaped inner surface polishing device includes a magnetic pole shaft 16, a cross-shaped magnetic pole frame 15 arranged at the ends of the magnetic pole shaft 16, and magnetic pole holders 14 respectively arranged at the four ends of the cross-shaped magnetic pole frame 15 , the magnetic poles 13 respectively arranged on each magnetic pole base 14 .

The magnetic poles 13 on the cross-shaped magnetic pole frame 15 are symmetrically arranged up and down and symmetrically arranged left and right, a pair of magnetic poles 13 arranged symmetrically up and down are mutually opposite magnetic poles, and the magnetic poles 13 arranged symmetrically left and right are mutually opposite magnetic poles.

The heads of the four magnetic poles 13 located on the cross-shaped magnetic pole frame are arc-shaped.

The magnetic tube 2 is fixed on the chuck 1 of the headstock 12 and rotates at high speed with the spindle of the machine tool. The magnetic pole 13 on the cross-shaped magnetic pole frame 15 is driven by the motor 6 on the moving slide box 9 and extends to the magnetic tube 2 Inside, shake the handwheel 10 so that the coaxiality of the magnetic tube 2 is better under the rotation of the machine tool spindle, and no eccentric phenomenon occurs, so that the inner surface of the magnetic tube 2 has a better finishing effect. There is a gap of 3mm-5mm between the four magnetic poles 13 at the four ends of the cross-shaped magnetic pole frame 18 and the inner wall of the permeable tube 2 for filling magnetic abrasives 17 and water-based grinding liquid, and the magnetic poles 13 magnetize the permeable tube 2, thereby A closed magnetic field area is generated between the magnetic pole 13 and the magnetic tube 2, and a weak closed magnetic field is also formed between the adjacent opposite magnetic poles 13, and the magnetic abrasive 17 is pressed onto the surface of the workpiece under the action of the magnetic field force to form a cutting surface. Magnetic brush with high capacity, the main shaft of the machine tool drives the magnetic tube 2 to rotate, and the magnetic pole 13 on the cross-shaped magnetic pole frame 15 performs circular rotation under the drive of the motor 6, coupled with the axial feed motion of the machine tool, so that the magnetic The abrasive material 17 performs a spiral linear movement, so that the crests and troughs on the inner surface of the magnetic tube 2 are well removed, and the surface morphology is smoother and finer, and the surface roughness is lower.

The magnetic poles 13 on the cross-shaped magnetic pole frame 15 of the present invention are symmetrically arranged up and down and symmetrically arranged left and right. The magnetic force lines of the magnetic poles 13 on the cross-shaped magnetic pole frame 15 are respectively from the N pole to the S pole, and the magnetic induction lines of the four magnetic pole heads near the magnetic conduction tube 2 are denser, and the magnetic induction intensity is relatively large. A weak closed magnetic field will also be formed between them. The magnetic pole 13 is driven by the motor 6 to perform a circular rotation motion, coupled with the axial feed motion of the machine tool, so that the magnetic abrasive material 17 performs a spiral linear motion, and the original surface wave peak of the workpiece The troughs are more evenly removed, the surface of the processed workpiece is smoother, and the processing efficiency can be significantly improved, thereby saving costs.

Claims (3)

1. a kind of magnetic conductive tube internal grinding burnishing device, including bed piece, are arranged the spindle box on this bed piece, if The chuck on this spindle box is set, the mobile sliding box being arranged on the bed piece controls this movement sliding box movement Leading screw and handwheel, it is characterised in that be equipped with fixed seat in the mobile sliding box, pass through baffle plate setting in this fixed seat There is motor, cross inner surface burnishing device be connected with by the output shaft of shaft coupling and the motor,

The cross inner surface burnishing device includes magnetic pole shaft, and the cross magnetic pole in the magnetic pole shaft end point is arranged Frame is separately positioned on the magnetic pole seat of described four end points of cross magnetic pole frame, the magnetic pole being separately positioned on each magnetic pole seat.

2. magnetic conductive tube internal grinding burnishing device according to claim 1, it is characterised in that the cross magnetic pole Magnetic pole on frame is setting symmetrical above and below and is symmetrical set, a pair of of magnetic pole of setting symmetrical above and below opposite pole each other, left Right symmetrically arranged magnetic pole opposite pole each other.

3. magnetic conductive tube internal grinding burnishing device according to claim 1 or 2, it is characterised in that be located at the cross The head of four magnetic poles on shape magnetic pole frame is arc-shaped.