CN2052700U

CN2052700U - Multi-purpose portable sand grinder

Info

Publication number: CN2052700U
Application number: CN 89212889
Authority: CN
Inventors: 黄云
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 1989-04-08
Filing date: 1989-04-08
Publication date: 1990-02-14

Abstract

The utility model belongs to a multi-purpose portable sand grinder, comprising an annular sand belt, the drive part of the sand belt, the tensioning part of the sand belt, a motor, a driving and speed changing part and an operating handle. The tensioning part of the sand belt comprises a supporting rod, an eccentric sleeve, a turning handle, a torsion spring, a wheel shaft and a tensioning wheel. One end of the supporting rod is sheathed on the front supporting outer housing of the driving and speed changing part, and a liner bushing is embedded in the other end of the supporting rod. The eccentric sleeve is arranged in middle part of the liner bushing, the tensioning wheel is arranged on the other end of the wheel shaft, and the torsion spring is arranged in an inner chamber between the eccentric sleeve and the turning handle. The utility model can effectively grind and polish the parts made of ferrous metal, non-ferrous metal and nonmetal material.

Description

Multi-purpose portable sand grinder

The utility model is the device that is used for metal and the polishing of nonmetallic materials piece surface hand grinding.

Just be applicable to that metal and nonmetallic materials piece surface carry out with regard to the device of hand grinding polishing, existing portable grinder (as SlS-125 type portable grinder) and the portable emery cloth buff polishing machine (dress emery cloth polishing wheel forms on portable grinder) of being mainly, portable grinder is mainly used in the ferrous metal part processing, as reconditioning steel plate weld seam, casting fin etc., but just very difficult to the non-ferrous metal part processing, obstruction can't continue to use as emery wheel.Portable emery cloth buff polishing machine is mainly used in the metal parts surface finish.All there are defectives such as working (machining) efficiency is low, noise is big, dust is many, operational hazards, machined surface quality difference simultaneously in these two kinds of devices, and two kinds of devices can not the while dual-purpose.

The purpose of this utility model just is to make a kind of working (machining) efficiency height, noise is low, dust is few, the corase grind of can doing easy to operate, safe in utilization, machined surface quality is processed, can do meticulous polishing processing again, the portable sand mill of various metals and the nonmetallic materials part processing of suiting again simultaneously.

The purpose of this utility model realizes in the following manner, by endless abrasive belt, the abrasive band drive part, the abrasive band tensioning portion, motor, parts such as driving variable part and operator handle constitute, its special character is that the abrasive band tensioning portion is by cramp bar 10, eccentric bushing 15, handle 12, torsion spring 21, wheel shaft 17 and regulating wheel 11 are formed, cramp bar 10 1 ends are enclosed within on the shell that drives gear 3, the other end is embedded with a lining 14, in the middle of the lining 14 is eccentric bushing 15, be matched in clearance between the two, back-up ring 13 is equipped with at two ends at eccentric bushing 15 respectively, packing ring 22, torsion spring 21 and handle 12, and they are combined with a gap by wheel shaft 17 and nut 20, the other end of wheel shaft 17 is regulating wheels 11, torsion spring 21 is contained in the internal cavity between eccentric bushing 15 and the handle 12, and its two ends are separately fixed on cramp bar 10 and the handle 12; The abrasive band drive part is made up of abrasive belt wheel 4, driving shaft 5, driving gear, and the installation dimension of the physical dimension of abrasive belt wheel 4 and driving shaft 5 thereof is identical with the employed emery wheel of existing S1S-125 type portable grinder with mounting means.Abrasive belt wheel 4 is of a size of 125 * 20 * 30(external diameter * internal diameter * wide) mm.

Can consult Fig. 1, Fig. 2 and Fig. 3 with the detailed structure of portable sand mill more than of the present utility model.Cramp bar 10 slotted big ends are enclosed within on the preceding supporting shell that drives gear 3, screw 8 by the fluting place is fastening with it, and other end inside is embedded with a lining 14, and eccentric bushing 15 is housed in the middle of the lining 14, between it and the lining 14 is matched in clearance, in order to flexible rotation.Back-up ring 13 is equipped with at two ends at eccentric bushing 15 respectively, packing ring 22, torsion spring 21 and handle 12, by wheel shaft 17 and nut 20 they are combined with a gap, so that by back-up ring 13, the rotation physical efficiency that eccentric bushing 15 and handle 12 are formed is being rotated between lining 14 and cramp bar 10 under the effect of torsion spring 21 neatly, torsion spring 21 is enclosed within on the step of eccentric bushing 15 and among the inner chamber of handle 12, its end passes packing ring 22 and is fixed on the cramp bar 10, the other end is fixed on the handle 12, the strength of torsion spring 21 is by handle 12, wheel shaft 17 serves as that supporting passes to regulating wheel 11 with eccentric bushing 15 shells, and with abrasive band 9 tensionings, abrasive band 9 is on abrasive belt wheel 4 and regulating wheel 11, the power of motor 2 passes to abrasive belt wheel 4 by driving gear 3 by driving shaft 5, drives the abrasive band thus and makes grinding motion.Abrasive belt wheel 4 physical dimensions of the present utility model and identical with the employed emery wheel of existing S1S-125 type portable grinder with the installation dimension and the mounting means of driving shaft 5, operator is 1, motor 2, the structural parameters that drive gear 3 and driving shaft 5 are also identical with existing S1S-125 type portable grinder, the structure of regulating wheel 11 is identical with the common idle pulley structure of being made up of two single-row radial ball bearings, screw 16 auxiliary wheel shafts 17 are fixed together back-up ring 13 and eccentric bushing 15, screw 19 also is that auxiliary wheel shaft 17 is fixed together handle 12 and eccentric bushing 15, rotating eccentric sleeve 15 during in order to installation abrasive band 9, dwindle the distance between regulating wheel 11 and the abrasive belt wheel 4, load onto or pull down abrasive band 9, stop screw 18 is contained on the end face of cramp bar 10, its position is among the circular arc cutaway of back-up ring 13 just, with the rotational angle size of restriction eccentric bushing 15.

Add man-hour, at first connect power supply, the high-speed grinding campaign is done in the abrasive band, and grinding can be carried out to workpiece in the abrasive band under the driving of abrasive belt wheel and support effect, or can carry out grinding on the abrasive band face between abrasive belt wheel and the regulating wheel.In the process, can change the abrasive belt wheel and the varigrained abrasive band of different encapsulate hardness, can also pull down the direct emery wheel of installing of abrasive belt wheel cramp bar and regulating wheel part in addition and process according to different processing requests.

Of the present utility model many be 895mm with the employed abrasive band of portable sand mill girth, width is 30mm, abrasive belt wheel is an aluminium core encapsulate wheel, encapsulate hardness can be Shao Shi 35 degree, 50 degree and 75 degree, the abrasive belt wheel dimensions is 125 * 20 * 30(external diameter * internal diameter * wide) mm, the abrasive band granularity can be 24～500 orders, and grinding wheel graininess can be 24～150 orders, and motor uses the common civil power of power supply as 50Hz 220V.

Many portable sand mills of use of the present utility model are main grinding tool owing to adopt the abrasive band, no matter thereby to being that the part of ferrous metal, non-ferrous metal or nonmetallic materials can both carry out high efficiency reconditioning polishing and processes.Because abrasive belt wheel has three kinds of different hardness, not only efficient surpasses abrasive machine in the roughing of part weld seams such as reconditioning steel plate, and operation noise is little, dust is few, safe in utilization these all are that abrasive machine is incomparable, in the fine finishining of polishing metal and nonmetal plate, its working (machining) efficiency is higher than emery cloth buff polishing machine far away, and almost is non-dusting.In addition, because of the present utility model how identical at abrasive belt wheel physical dimension, mounting means, drive shaft, driving gear, motor and operator handle etc., as long as thereby change the function that emery wheel just can have the normal sands turbine concurrently with existing S1S-125 type portable grinder with portable sand mill.As seen, of the present utility modelly many be particularly suitable for plate weld seam, foundry goods, forging flash polishing with portable sand mill, the high efficiency of nonmetallic materials parts such as surperficial meticulous polishing and glass, low noise, few dust, not having dangerous processing need.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is portable many front views with portable sand mill of the present utility model.

Fig. 2 is the A-A cutaway view among Fig. 1.

Fig. 3 is the I broken section enlarged drawing among Fig. 1.

Claims

1, a kind of portable sand mill of using more, forming, it is characterized in that the abrasive band tensioning portion is made up of cramp bar, eccentric bushing, handle, torsion spring, wheel shaft and regulating wheel by endless abrasive belt, abrasive band drive part, abrasive band tensioning portion, motor, driving variable part and operator; Cramp bar one end is enclosed within on the preceding supporting shell that drives gear, and the other end is embedded with a lining; Eccentric bushing is positioned in the middle of the lining, is matched in clearance between the two; The two ends of eccentric bushing are equipped with back-up ring, packing ring, torsion spring and handle respectively, and by wheel shaft and nut they are combined with a gap; Regulating wheel is positioned at the other end of wheel shaft; Torsion spring is contained in the internal cavity between eccentric bushing and the handle, and its two ends are separately fixed on cramp bar and the handle.

2, as claimed in claim 1ly use portable sand mill, the abrasive belt wheel that it is characterized in that the abrasive band drive part is of a size of 125 * 20 * 30(external diameter * internal diameter * wide more) mm.