CN2302077Y

CN2302077Y - Electric boring and milling machine

Info

Publication number: CN2302077Y
Application number: CN 97237854
Authority: CN
Inventors: 冯文莪; 陈晓军
Original assignee: CHEMICAL MACHINERY FACTORY LUT
Current assignee: CHEMICAL MACHINERY FACTORY LUT
Priority date: 1997-10-13
Filing date: 1997-10-13
Publication date: 1998-12-30
Anticipated expiration: 2007-10-13

Abstract

The utility model relates to an electric boring and milling machine. The repair of tubes of heat exchangers has the problems of complex operation, high strength, long working period, and low efficiency. The utility model is characterized in that the internal of the machine body is provided with a hollow axle; one end of the hollow axle is provided with a cutterhead and the other end is provided with a hand wheel; a centering rod is connected with a cored screw rod by the hollow axle; the cored screw rod is fixed with a locking screw rod; a pair of small bearings is arranged between the centering rod and the hollow axle; the outer end faces of the small bearings are provided with dustproof rings; a protecting ring is arranged between the centering rod and the dustproof rings; a long screw rod passing through the centering rod is connected with the locking screw rod; an outer cone nut and the male cone of the centering rod are provided with elastic lock sleeves. The utility model is applicable to the spot repairing and the milling and boring machining of chemical equipment heat exchanger tubes.

Description

The electronic boring machine that mills

But the utility model relates to a kind of being used for the employed both Milling Process of pressure vessels for the chemical industry heat exchanger place under repair manufacture process, but the also electronic boring machine that mills of boring processing.

At present when the place under repair of chemical industry equipment heat exchanger tube is made, take the whole demolition of heat exchanger is got off handling to lathe, treat and repair that tubulation mills or boring processing, completion of processing is installed the whole handling of heat exchanger, causes the reconditioning work complicated operation, labour intensity is big, long in time limit, efficient is low.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art and provides a kind of easy and simple to handle, and labour intensity is low, the electronic boring machine that mills of fugitive rate height of duration and long service life.

The purpose of this utility model can reach by following measure: the utility model includes an electric drill, client link is equipped with a coupling sleeve before this electric drill, this coupling sleeve connects mutually with one speed reducer, the large bevel gear that the cone pinion of this decelerator and is fixedly installed on the hollow shaft is meshed, decelerator and body are coupled to one, before it is characterized in that in body, using, rear bearing supports a hollow shaft is installed, the periphery that this hollow shaft stretches out the body end is the multiple thread section, this multiple thread section is equipped with cutterhead, at hollow shaft rear axle socket end concentric one handwheel is installed, it is that the centering bar of outer conical surface passes hollow shaft and handwheel endoporus that one head is arranged, its afterbody and cored screw are threaded and are integral and the external screw thread of cored screw with a tie down screw is connected, centering bar upper support between centering bar and hollow shaft multiple thread section inner headed face is equipped with a pair of little bearing and little bearing holder (housing, cover), there is a dust ring to be set on the centering bar in this a pair of little bearing outer face, be set with a guard ring on the centering bar in centering bar before this dust ring and the cutterhead between the circle, there is the long bolt that a head is equipped with back of the body cap and outer cone nut to pass the centering bar, its afterbody is connected with the internal thread of tie down screw, the tail end of tie down screw is equipped with a handle stem, is set with an elasticity lock sleeve on the male cone (strobilus masculinus) between outer cone nut and the centering club head.

Accompanying drawing is the utility model structural principle signal partial sectional view.

The utility model is described in further detail below in conjunction with (accompanying drawing) embodiment: 1 is electric drill, client link is equipped with a coupling sleeve 2 before this electric drill 1, this coupling sleeve 2 connects mutually with one speed reducer 3, the large bevel gear 30 that the cone pinion 29 and of this decelerator 3 is fixedly installed on the hollow shaft 17 is meshed, large bevel gear 30 adopts key 19 to connect with hollow shaft 17, decelerator 3 is coupled to one with body 25, before in body 25, using, rear bearing 18,20 supports are equipped with a hollow shaft 17, the periphery that this hollow shaft 17 stretches out body 25 ends is a multiple thread section 26, this multiple thread section 26 is equipped with

cutterhead

15,11 for being used for the voussoir of fastening blade 8 on the cutterhead 15, be installed in a handwheel 21 at hollow shaft 17 rear bearings 20 end concentrics, it is that the centering bar 9 of outer conical surface 27 passes hollow shaft 17 and handwheel 21 endoporus that one head is arranged, its afterbody and a cored screw 22 are threaded and are integral and the external screw thread of cored screw 22 with a tie down screw 23 is connected, centering bar 9 upper supports between centering bar 9 and hollow shaft 17 multiple thread sections 26 inner headed faces are equipped with a pair of little bearing 16 and little bearing holder (housing, cover) 13,14, make hollow shaft 17 rotations more steady, there is a dust ring 12 to be set on the centering bar 9 in these a pair of little bearing 16 outer faces, dust ring 12 is in order to prevent iron filings, and dust enters in the hollow shaft 17.Be set with a guard ring 10 on the centering bar 9 in centering bar 9 before dust ring 12 and the cutterhead 15 between the circle, in order to prevent that iron filings from entering cutterhead 15 endoporus, there is the long bolt 4 that a head is equipped with back of the body cap 5 and outer cone nut 6 to pass centering bar 9, its afterbody is connected with the internal thread of tie down screw 23, the tail end of tie down screw 23 is equipped with a handle stem 24, male cone (strobilus masculinus) 27 between outer cone nut 6 and centering bar 9 heads, be set with an elasticity lock sleeve 7 on 28, the designed electronic boring machine that mills that provides of the utility model so just has been provided, the utility model operation principle is as follows: long bolt 4 is stretched in the heat exchanger tube hole, and make elasticity lock sleeve 7 be positioned at the tubulation hole, rotate handle stem 24 this moment, handle stem 24 drives tie down screw 23 rotations, check lock lever 23 external screw threads drive axially position of cored screw 22, because in the tie down screw 23, outer pitch does not wait, force long bolt 4 and centering bar 9 to move as rightabout vertically, thereby make the conical surface 28 of outer cone nut 6 and the conical surface 27 of centering bar 9 make rightabout equally like this near moving combination of extrusion elasticity lock sleeve 7 two ends inner conical surfaces, make elasticity lock sleeve 7 and the swelling of tubulation hole be integral, so not only played a supporting role but also cutterhead 15 is aligned, align the back and start electric drill 1, electric drill 1 rotates through coupling sleeve 2, decelerator 3 drives large bevel gear 30 rotations by cone pinion 29, thereby drive hollow shaft 17 rotations, 15 rotations of hollow shaft 17 rotating band movable knife discs, can realize treating the milling of repairing tubulation, boring processing, if add and need feed man-hour, then rotate handwheel 21, handwheel 21 promotes hollow shaft 17, body 25 integral body are in centering bar 9 upper edge axial advancement, thereby realization feed, counter-rotation handwheel 21, then can realize withdrawing, work as completion of processing, close electric drill 1, counter-rotation handle stem 24, the same reason, then thereby the conical surface 27 of the conical surface 28 of outer cone nut 6 and centering bar 9 deviates to move as rightabout and unclamps with elasticity lock sleeve 7 two ends inner conical surfaces, make elasticity lock sleeve 7 and tubulation hole unclamp disengaging, and in the tubulation hole, take out.

The utility model has following advantage compared to existing technology:

1, owing to adopt the elastic locking cover that complete machine is supported on the tubulation and to cutter to align, can The scene directly to tubulation to be repaired mill, boring processing, thereby easy and simple to handle, repair labour intensity low, Duration is short, can greatly raise the efficiency;

2, because dust ring and guard ring are installed, can prevent effectively that upward iron filings, dust enter circle in cutterhead and the hollow shaft on hollow shaft, thereby long service life.

Claims

1, a kind of electronic boring machine that mills, include an electric drill, client link is equipped with a coupling sleeve before this electric drill, this coupling sleeve connects mutually with one speed reducer, the large bevel gear that the cone pinion of this decelerator and is fixedly installed on the hollow shaft is meshed, decelerator and body are coupled to one, before it is characterized in that in body, using, rear bearing supports a hollow shaft is installed, the periphery that this sky shaft extension goes out the body end is the multiple thread section, this multiple thread section is equipped with cutterhead, at hollow shaft rear axle socket end concentric one handwheel is installed, it is that the centering bar of outer conical surface passes hollow shaft and handwheel endoporus that one head is arranged, its afterbody and a cored screw are threaded and are integral and the external screw thread of cored screw with a tie down screw is connected, centering bar upper support between centering bar and hollow shaft multiple thread section inner headed face is equipped with a pair of little bearing and little bearing holder (housing, cover), there is a dust ring to be set on the centering bar in this a pair of little bearing outer face, be set with a guard ring on the centering bar in centering bar before this dust ring and the cutterhead between the circle, there is the long bolt that a head is equipped with back of the body cap and outer cone nut to pass the centering bar, its afterbody is connected with the internal thread of tie down screw, the tail end of tie down screw is equipped with a handle stem, is set with an elasticity lock sleeve on the male cone (strobilus masculinus) between outer cone nut and the centering club head.