CN2033323U

CN2033323U - Soft grinding head

Info

Publication number: CN2033323U
Application number: CN 88205608
Authority: CN
Inventors: 李芧华
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-05-01
Filing date: 1988-05-01
Publication date: 1989-03-01

Abstract

The utility model relates to a soft grinding head which is mainly composed of a shaft handle, a wing sheet and a core shaft. The grinding head can replace emery cloth or a grinding wheel, and the grinding head is used for rust removal and burr removal on surfaces and surface grinding and burnishing. When in use, the workpiece surface is not damaged with flexibility. The utility model has the advantages of high productive efficiency and simple structure and is beneficial to use and manufacture. The soft grinding head is widely used for the rust removal and burnishing on the surfaces of metal members and the burnishing of other non-mental members, such as wood products, marble for buildings, pelikanite, etc.

Description

Soft grinding head

The utility model relates to mechanical derusting, polishing field.

In existing technology, the method for manual grindings such as sand paper, iron brush is adopted in the rust cleaning of metal machine components mostly, and not only labour intensity is big for it, and production efficiency is low.Sometimes also adopt portable grinder polishing, though its production efficiency height, because the rigidity of emery wheel is big, in the operating process of rust cleaning, injuring part surface easily, thereby will cause the reduction of surface quality of workpieces.In order to solve the deficiencies in the prior art, special proposition technical solution of the present utility model.

Basic design of the present utility model is, the particle of hard is boning on soft thin slice (diaphragm or cloth), one end of the thin slice (diaphragm or cloth) of a plurality of hard particles that boning is bonded together around a certain steel axle, when the steel axle turns round with certain speed, drive has the thin slice (diaphragm or cloth) of hard particles and does gyration, just can remove the surface of the rust or the polishing workpiece of metal surface when contacting with workpiece.

The utility model mainly is made up of footstalk (3), mandrel (1) and fin (2) three parts, it is characterized in that, footstalk (3) is to be made by metal material, the one end is cast (or injection) together with an end of polymer and fin (2), in order to increase the bond strength with polymer, can be carved with groove with the coupling part of mandrel (1), its other end inserts in the anchor clamps of electronic (or pneumatic) machine drive when work; Fin (2) promptly is the thin slice (diaphragm or cloth) of many hard particles that boning, it be around footstalk (3) axially with the radial end that is evenly distributed on footstalk (3), the direction that its sand face (face of the hard particles that promptly bonds) all rotates when footstalk (3) is worked is beneficial to grinding.As the carrier of hard particles, can be plastics, diaphragm, sheet rubber, also can be cloth matter fiber or glass fabric, if plastics, but hard particles direct heat pressure is in its surface, if the then available adhesive bonds of cloth matter.Hard particles can be SiO ₂, Al ₂O ₃, Cr ₂O ₃, SiC, TiC, WC, VC, BC, Si ₃N ₄With cube BN and diamond etc., its granule size can be with reference to the standard of GB2477-83, generally can be 30 ^#The scope of～W0.5 can make series of products as required.When bonding hard particles on thin slice, an end of thin slice leaves the not bonding hard particles of 5～20mm distance; Mandrel (1) is to be formed by macromolecular material casting (or injection), and it tightly bonds together an end of footstalk (3) and fin (2) (end that does not promptly have hard particles).

The appearance and size of the utility model---Soft grinding head can be chosen with reference to the table 1 among the GB2486-84, table 2, also can make special-shaped size according to the surface configuration of workpiece, general desirable cylindrical D=3～800mm, H=6～20mm, d=1～60mm can form appearance and size series, to adapt to different occasions, the abnormity size can be made into taper shape, stairstepping or other curved surface shaped; The size of footstalk (3) conveniently is advisable with work.

Accompanying drawing has provided the details of structure, is structural representation of the present utility model.Fin (2) is along the radial even distribution of the axis of footstalk (3), help grinding for making, the direction that the one side that has a hard particles is all rotated towards footstalk (3), fin (2) all is not close together mutually with an end of hard particles and (can be close together yet, equidistantly distributing with certain size) they form a cylindrical space, one end of footstalk (3) inserts this space, and the axis of its footstalk (3) and the axis of cylindrical space are coincided, leave the gap of 1～10mm between the surface of footstalk (3) and the fin (2), general desirable 3mm, so that footstalk (3) and fin (2) casting (or injection) together, are just formed mandrel (1) after the polymer cure with polymer.

If change fin of the present utility model (2) into scribble abrasive pastes flannelette, the polishing that then can be used as piece surface is used.If hard particles is VC, Si ₃N ₄, high rigidity abrasive materials such as cube BN, BC, the grinding that then can be used for hard material surface is used.Therefore, can adopt hard particles and different big or small granularity according to different purposes with different materials, can make the Soft grinding head of different purposes, this bistrique can be used for rust cleaning, flash removed, shaping, polishing and the polishing etc. of part, Surface Machining in also can be used for building, as the surface grinding of terrazzo, marmorean polishing, the surface grinding of woodwork etc.Its major advantage is:

1. since bistrique of the present utility model when work approximately with 2000 rev/mins rotating speed rotation, therefore, high efficiency.

2. because more steady during the work of this bistrique, certain flexibility is arranged, do not damage working surface, therefore make the workpiece surface quality height.

3. simple in structure.

4. change fin and can form different purposes and functional product.

Be specific embodiment of the utility model below:

Embodiment 1:

The wooden handrail of armchair polishes before being coated with gloss varnish.Fin (2) adopts 70 ^#The SiO of granularity ₂Hot pressing is on the diaphragm of polyvinyl chloride, its bistrique size is with reference to GB2486-84 standard D=50mm, H=30mm, d=15mm, during use, choose after the size and granularity series of bistrique, footstalk (3) is inserted in the anchor clamps of portable small size motor drive, open the small size motor switch, bistrique promptly begins rotation, then, with fin (2) contact handrail surface, move around, speed that moves and fin (2) are added in the power on the handrail, need to decide on it, generally do not need artificial reinforcing, deadweight gets final product by bistrique.Because bistrique is less, flexibility is arranged, so can grind each curved surface on the handrail again.After using up, close the small size motor switch, see whether its flour milling reaches requirement,, can start small size motor again and work on, till all qualified if the somewhere is nonconforming.

Embodiment 2:

The steel shell eliminates rust before japanning.Adopting the hard particles of fin (2) is Al ₂O ₃, granularity selects 220 for use with reference to GB2477-83 ^#The carrier of particle is a cotton, and the bistrique size is chosen D=500mm with reference to GB2485-84, H=200mm, d=50mm then, is inserted into footstalk (3) in the anchor clamps of driven by motor, start motor switch, make fin (2) contact steel plate again, fin (2) is when oneself rotates, move forward and backward again, when the iron rust on the steel plate is removed the standard that conforms with japanning, can stop motor and rotate, in operating process, also visual its concrete condition, the bistrique of employing different series.

Embodiment 3:

Marmorean grinding for building.When grinding this material, select TiC for use with reference to the hard particles on the GB2477-83 fin (2), its granularity is 100 ^#, stick with glue agent and be bonded on the cloth that cotton fiber knits.The bistrique size is with reference to GB2485-84, D=200mm, H=120mm, d=25mm, footstalk (3) is inserted in the anchor clamps that little air operated machine drives, then, start the switch of air operated machine, make its bistrique high speed rotating, again with the marmorean surface of fin (2) contact and sweep back and forth until marble surface is polished down to conform with building requirements till, can change the model of bistrique in the operating process work so that have varigrained fin (2), as from coarse to fine, so that can reach better requirement.

Claims

1, a kind of Soft grinding head of industrial application, comprise footstalk [3], mandrel [1] and fin [2], it is characterized in that, fin [2] is formed with radial equally distributed many thin slices around footstalk [3] along its axis direction at an end of footstalk [3], this thin slice has certain geometrical shape, on the face of footstalk [3] rotation direction, equally distributed hard particles is boning.

2, Soft grinding head according to claim 1 is characterized in that, constitutes the hard particles of fin (2), and its composition can be SiO ₂, Al ₂O ₃, Cr ₂O ₃, SiC, TiC, VC, WC, BC, Si ₃N ₄, cube BN and diamond, its granule size can be 30 ^#The scope of～W0.5.

3, Soft grinding head according to claim 1 is characterized in that, constitutes the thin slice of fin (2), can be polymer membrane, can also be cotton fabric and glass fabric.

4, Soft grinding head according to claim 1 is characterized in that, its appearance and size scope is D=3～800mm, H=6～200mm, and d=1～60mm can form series, and its outer surface can be made into cylinder, circular cone or other curved surface.