CN210099706U - Grinding device - Google Patents

Abstract

The utility model discloses a grinding device, which comprises a grinding head and a grinding box which are matched with each other; wherein the mill feed case includes: the grinding device comprises a box body, a grinding material storage box and a grinding material conveying box, wherein a plurality of grinding material partitions are arranged in the box body; the abrasive is arranged in the abrasive subareas respectively, and the granularity of the abrasive in different abrasive subareas is different. Compared with the prior art, the utility model discloses following beneficial effect has: the grinding head mainly comprises a grinding head, a grinding material and a grinding material box, and can grind and polish a complex profile and a position difficult to machine. Further, the processing quality can be controlled by adjusting the process parameters (current, frequency, rotating speed, abrasive compaction degree and the like).

Description

Grinding device

Technical Field

The utility model relates to the technical field of machining, in particular to multi-functional grinder.

Background

The traditional finishing process uses a roller polishing method. A large amount of steel balls, lime and abrasive are placed in a roller, and the roller rotates to enable the steel balls and the abrasive to randomly roll and collide in the roller so as to achieve the purposes of removing surface peaks and reducing surface roughness.

In the prior art, the Chinese utility model patent "a drum polisher" (publication number: 208645035U) discloses a drum polisher, comprising: a frame and a roller arranged on the frame, wherein the side wall of the frame is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft in sequence, and is arranged on a fixed plate on the side wall of the frame through a bearing, a first belt pulley is arranged in the middle of the second rotating shaft, fastening devices are arranged at both ends of the second rotating shaft, and is movably connected with the first rotating shaft and the third rotating shaft through a fastening device, a motor is arranged in the frame, a second belt pulley is arranged on an output shaft of the motor, the second belt pulley is in transmission connection with the first belt pulley through a first belt, the gear is arranged on the first rotating shaft, the roller polishing machine provided by the utility model not only improves the polishing efficiency and quality, but also improves the discharging efficiency, thereby saving a large amount of processing time of the traditional roller polishing machine on the whole, saving time and labor and being very suitable for polishing workpieces.

However, the barrel polishing has disadvantages that it is difficult to polish a workpiece having a complicated profile, a pinhole, or the like at a position difficult to be processed, and the processing conditions and the processing quality are difficult to control.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a solve above-mentioned technical problem's grinder.

In order to solve the technical problem, the grinding device of the utility model comprises a grinding head and a grinding box which are matched with each other; wherein the mill feed case includes: the grinding device comprises a box body, a grinding material storage box and a grinding material conveying box, wherein a plurality of grinding material partitions are arranged in the box body; the abrasive is arranged in the abrasive subareas respectively, and the granularity of the abrasive in different abrasive subareas is different.

Preferably, the abrasive is a metallic and/or non-metallic material and the abrasive is a magnetic and/or non-metallic material.

Preferably, the box is a magnetic conduction box.

Preferably, the case is a flexible case.

Preferably, an air pump is arranged below the box body and is communicated with the abrasive material subareas from the bottom through an air channel pipeline.

Preferably, a filter screen is arranged at the bottom of the abrasive partition and at the joint of the air channel pipeline.

Preferably, the grinding head at least comprises a shell and a grinding probe arranged in the shell, wherein the grinding probe is a magnetic spring grinding probe or a gas bag grinding probe.

Preferably, the grinding probe is provided with a needle-like processing portion.

Preferably, the abrading head further comprises:

the iron core is arranged in the shell;

the middle electromagnetic coil is wrapped on the outer side of the iron core;

the external excitation coil is wrapped on the outer side of the shell;

the external exciting coil corresponds to the intermediate electromagnetic coil.

Preferably, the core is a permanent magnet core, a ferromagnetic core or a non-magnetic core.

Compared with the prior art, the utility model discloses following beneficial effect has: the grinding head mainly comprises a grinding head, a grinding material and a grinding material box, and can grind and polish a complex profile and a position difficult to machine.

Further, the processing quality can be controlled by adjusting the process parameters (current, frequency, rotating speed, abrasive compaction degree and the like).

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a schematic view of the structure of the grinding device of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a grinding box of the grinding device of the present invention;

FIG. 3 is a schematic structural view of a grinding box of the grinding device according to the second embodiment of the present invention;

FIG. 4 is a first schematic view of the force applied to the grinding box of the grinding device of the present invention;

FIG. 5 is a second drawing showing the force applied to the grinding box of the grinding device of the present invention;

FIG. 6 is a schematic view of a grinding probe of the grinding apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a second embodiment of a grinding probe of the grinding device of the present invention;

FIG. 8 is a schematic view of the needle-shaped processing portion of the grinding device of the present invention;

fig. 9 is a cross-sectional view of a polishing head of the polishing apparatus of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 to 9, the polishing device of the present invention includes a polishing head 13 and a polishing box which are matched with each other; wherein the mill feed case includes: the grinding material box comprises a box body 1, wherein a plurality of grinding material subareas 2 are arranged in the box body 1; and the abrasive 3 is respectively arranged on the plurality of abrasive partitions 2, the abrasive 3 in different abrasive partitions 2 has different particle sizes, and the abrasive 3 is a non-metal abrasive 3 or a magnetic abrasive 3.

The box body 1 is a magnetic conduction box body 1. The box body 1 is a flexible box body 1.

An air pump 4 is arranged below the box body 1, and the air pump 4 is communicated with the abrasive material subarea 2 from the bottom through an air channel pipeline (not shown in the figure).

A filter screen is arranged at the bottom of the grinding material partition 2 and at the joint of the gas path pipeline.

The abrasive 3 is a loose abrasive 3, such as a non-metal abrasive (traditional abrasive 3 such as brown corundum and diamond) or a magnetic abrasive (metal and non-metal composite), and the loose abrasive 3 has good adaptability and self-sharpening performance relative to the structure or cavity or surface of a workpiece to be processed. The abrasive 3 is loaded in the abrasive box according to different particle sizes. The non-metal abrasive 3 can be loaded in a flexible abrasive box, and the box body 1 is extruded and deformed by applying mechanical force, so that the extrusion force is transmitted to the abrasive, the compaction degree of the abrasive is changed, and the grinding pressure is further changed. The air content between the grinding materials in the box body 1 can be changed through the modes of vacuumizing and the like, so that the binding force of the grinding materials in the box body 1 is changed, the compaction degree of the grinding materials is changed, and the grinding pressure is changed.

For the magnetic abrasive 3, the compactness of the magnetic abrasive 3 can be controlled by applying a magnetic field outside the box, the magnetic abrasive 3 can be loaded in a magnetic conductive abrasive box, the abrasive box is placed in a magnetic circuit, and the grinding pressure of the magnetic abrasive 3 on a workpiece is changed by changing the intensity of the magnetic field. Through changing the size of the abrasive particle size and the size of grinding pressure, can carry out burring, rough grinding, lapping, polishing to the work piece, also can be with above-mentioned process integration, a work piece clamping, arm 11 centre gripping work piece grinds in different granularity abrasive material subregion 2, accomplishes a plurality of processes.

The polishing head 13 includes a housing 7 and a polishing probe 5 provided in the housing 7, and the polishing probe 5 is a magnetic spring polishing probe 5 or a balloon polishing probe 5.

The grinding probe 5 may be in the form of a magnetic spring, an air bag 14, or the like. The magnetic spring, the homopolar is opposite to form repulsion, is equivalent to a nonlinear spring. The balloon 14 acts as an elastic medium. And flexible materials such as rubber and the like can be adopted at the tail end, so that the processing part of the grinding head 13 has elasticity and is better attached to the surface of a workpiece, and meanwhile, the surface of the workpiece 4 is not damaged.

The polishing probe 5 is provided with a needle-like processing portion 6 (forming a probe). Compared with the mechanical arm 11, the machine tool is not flexible in the mechanical arm 11, and only has three-axis linear motion and main shaft rotation, and the probe vibration is added to total five-dimensional motion.

The polishing head 1 further includes: an iron core 8 (permanent magnet core 8, ferromagnetic core 8 or nonmagnetic core 8), an intermediate electromagnetic coil 9 and an external excitation coil 10.

The external exciting coil 10 generates an alternating magnetic field (only an alternating magnetic field generating device is needed), the wireless electromagnetic coil can rotate horizontally, and an induced current generated by the excitation of the magnetic field of the exciting coil is received to generate an induced magnetic field; the two magnetic fields are superposed to enable the cable-free coil to be pushed to reciprocate up and down to generate vibration; the external excitation coil 10 can apply a composite electric signal of direct current + alternating current; the bias electromagnetic field generated by the dc signal (i.e. the electrostatic magnetic force can be applied to the middle electromagnetic/permanent magnet coil, equivalently a magnetic spring is applied, and the stiffness of the spring can be external.

The external excitation coil 10 can apply a composite electric signal of direct current + alternating current; a bias electromagnetic field generated by a direct current signal (namely, electrostatic magnetic force can be applied to the middle electromagnetic/permanent magnet coil, equivalently, a magnetic spring is applied, the rigidity of the spring can be changed along with the direct current intensity of the external exciting coil 10, namely, the magnetoelastic rigidity of the system can be changed, so that the natural frequency of the moving part of the central flat-rotating cableless electromagnet can be changed), and at the moment, if an alternating current signal superposed with direct current or another coil time alternating current signal is applied to the external exciting electromagnetic coil, the middle flat-rotating coil can be made to vibrate in a reciprocating mode along the axial direction; in particular, when the frequency of the applied alternating signal is the same as the natural frequency of the middle rotating electromagnetic coil/iron, the resonance is generated, and the output energy is the maximum, thereby being beneficial to processing the workpiece. The vibration frequency and amplitude can be controlled by the intensity of the dc current of the external excitation coil 10, or the intensity or frequency of the ac signal applied to the external excitation coil 10.

The up-down large stroke translation (non-vibration reciprocating translation) of the middle electromagnetic coil 9 can be used for applying positive and negative direct current to attract/repel the middle electromagnetic/permanent magnet coil by the external electromagnetic coil to generate large stroke translation along the axial direction; the external electromagnetic coil and the internal electromagnetic coil can be more than one, and can work independently or work in series and parallel, and when the external electromagnetic coil and the internal electromagnetic coil work independently, the energizing time sequence of each coil can be different.

The electromagnetic field can realize the adjustment of the magnetic field intensity through loading current, so that the upper limit of the magnetic field intensity of the permanent magnet can be broken through; the mutual inductance coil can realize cable-free power transmission, so that the coil can freely translate and rotate without unreliable parts such as a conductive slip ring and the like; the rotation of the input shaft may be synchronously responded to.

The head part at the outer end of the grinding head (inner coil induced electromagnetic force or permanent magnetic end) can absorb magnetic abrasive (permanent magnetic and/or ferromagnetic particle abrasive) so that part of the abrasive in the abrasive box follows the grinding head through the action of the absorption force, and the grinding head always has grinding effect of abrasive particles between the space and any contact surface of a workpiece to be processed (not necessarily buried in the abrasive box).

The work flow is characterized in that: the workpiece moves along with the chuck (the robot arm can move in six dimensions, and the grinding head 13 rotates and vibrates in a combined motion, which amounts to eight dimensions), a complex motion track is formed between the workpiece and the grinding material, the track repetition is avoided, and the grinding precision and the grinding efficiency are improved.

The rotating speed and the vibration frequency amplitude are adjustable, the loading can be matched according to the grinding and polishing requirements, the motion trail is controllable, and the grinding and polishing can be carried out in different grinding material partition boxes according to the requirements in sequence.

The self-adaptive fit to the workpiece configuration or the cavity can be realized based on the particle abrasive, and the grinding processing can be carried out on various complex configurations.

The deep hole grinding can be carried out by firstly inserting the needle-shaped processing part into the hole and then embedding the grinding material, or firstly adding the grinding material and then inserting the needle-shaped processing part into the hole. Meanwhile, for deep hole grinding, the vibration mode of the needle-shaped processing part can be used for extruding the side wall, so that the straight hole or the taper hole has higher processing efficiency.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A grinding device is characterized by comprising a grinding head and a grinding box which are matched with each other; wherein

The grinding box includes:

the grinding device comprises a box body, a grinding material storage box and a grinding material conveying box, wherein a plurality of grinding material partitions are arranged in the box body;

the abrasive is arranged in the abrasive subareas respectively, and the granularity of the abrasive in different abrasive subareas is different.

2. The abrading device of claim 1, wherein the abrasive is a metallic and/or non-metallic material and the abrasive is a magnetic and/or non-metallic material.

3. A grinding apparatus as defined in claim 2, in which the box is a magnetically permeable box.

4. A grinding apparatus as defined in claim 1, in which the box is a flexible box.

5. The grinding device as claimed in claim 1, wherein an air pump is provided below the tank, and the air pump is communicated with the abrasive material partition from the bottom through an air passage pipe.

6. The abrading device of claim 5, wherein a screen is provided at the bottom of the abrasive segment at the junction of the air passage conduit.

7. The polishing apparatus as recited in claim 1, wherein the polishing head includes at least a housing and a polishing probe disposed within the housing, the polishing probe being a magnetic spring polishing probe or a balloon polishing probe.

8. The grinding apparatus according to claim 7, wherein a needle-like processing portion is provided on the grinding probe.

9. The polishing apparatus of claim 7, wherein the polishing head further comprises:

the iron core is arranged in the shell;

the middle electromagnetic coil is wrapped on the outer side of the iron core;

the external excitation coil is wrapped on the outer side of the shell;

the external exciting coil corresponds to the intermediate electromagnetic coil.

10. A grinding apparatus as defined in claim 9, wherein the iron core is a permanent magnet core, a ferromagnetic core or a nonmagnetic core.

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