CN103962813A - Processing and preparing method for casing combined piece of railway retarder - Google Patents

Abstract

The invention relates to a railway retarder casing used on a switchyard in a railroad marshalling yard, and particularly relates to a processing and preparing method for a casing combined piece of a railway retarder. The processing and preparing method for the casing combined piece of the railway retarder is characterized in that: during turning: a lathe is used for turning an inner hole III of a casing, no margin in the procedure is left for a subsequent procedure, the dimension f of the diameter of the mounting hole formed in the inner hole III and corresponding to a liner is directly processed to be Phi E, and the dimension b of the diameter of an inner hole II corresponding to a part with the length of e is processed to be Phi B; sleeve pressing: a liner is pressed into a turned and processed liner mounting hole of the casing, at this time, the dimension of the diameter of the liner inner hole corresponding to the c-length part of the casing is Phi A, and the dimension of the diameter corresponding to the e-length part is Phi B. An inner hole I, the inner hole II and the inner hole III are formed in the casing, and the liner is connected in a matched manner with the inner hole III. The processing and preparing method provided by the invention is extensively used on retarders for various railroads used in nowadays, such as common retarders, high-load retarders, prototype retarders, as well as stop wagon retarders, locking retarders, wheel stopping retarders and the like, and not only can be used for inner side retarders, but also can be used for outer side retarders.

Description

The housing assembly preparation for processing of decelerating for railway

Technical field

The present invention relates to the railway speed-reduction top housing using on a kind of marshaling yard switchyard, be specially the housing assembly preparation for processing of railway decelerating.

Background technology

The housing assembly of decelerating for railway, it is mainly made up of housing and installation lining in the inner.For many years the endoporus process of this product continuing to use always " turner---hinge lining installing hole---gland---fraising " processing technology produce.Production process is originally as follows: 1, turner: turning housing endoporus (see figure 1).Be that lining installing hole 2 diameter dimensions corresponding to c place are processed into φ D by enclosure interior length, enclosure interior length is that diameter dimension corresponding to e place is processed into φ C.Fraising: the lining installing hole 2 of ream housing.This diameter dimension φ D is increased because of ream.Gland: the lining installing hole 2(that lining (seeing the part 2 of Fig. 2) is pressed into after housing ream is shown in Fig. 1) in.Fraising: with same be ф A reamer time processing by lining diameter of bore ream, be that ф B(is shown in Fig. 2 by diameter of bore ф C ream in the middle part of housing).This technique not only efficiency is low, and of poor quality, often because machining benchmark disunity and fraising quality problems cause endoporus dimension overproof, sometimes even by lining hinge partially and bleed-out base (being that lining wearing layer is fallen by ream machining) causes a whole set of products to scrap.This kind machining manufacture operation is many, the requirement of operating personnel's level is high, has restricted the batch production of product.

Summary of the invention

The object of this invention is to provide a kind of simple in structure, operation is few, can make machining process route improve, lining technical requirement is improved simultaneously, thereby only used " turner---gland " two procedures can complete the housing assembly preparation for processing of decelerating for the railway of interior hole dimension.Object of the present invention realizes by following technical scheme: sub-assembly of the present invention comprises housing, lining, step I, step II, hole I, endoporus II, endoporus III, installing hole, it is characterized in that turner: by the endoporus III of lathe turning housing, this operation is not given subsequent handling made allowance, directly the diameter dimension f of the installing hole of the corresponding lining in endoporus III place is processed into φ E, length is that the diameter dimension b of the corresponding endoporus II in e place is processed into φ B; Gland: lining is pressed in the lining installing hole after housing turning processing, and now, shell length is that lining diameter of bore size corresponding to c place is φ A, and length is that diameter dimension corresponding to e place is φ B.In described housing, be provided with endoporus I, endoporus II, endoporus III, described lining is connected with the stationary fit of endoporus III.Between described step I and step II, it is endoporus II.Beneficial effect of the present invention: 1. improve the quality of products: stopped the product that causes because of ream overproof and scrap.2. reduce processing cost: 1) change 30 seconds 32 points of front man-hours, change 16 points of rear man-hours, save about half in man-hour for every.2) reduce in process of production twice fraising operation, can save reaming lathe, personnel, work folder measurer that two procedures relates to.3) substitute used program controlled lathe with numerically controlled lathe, although cost increases to some extent, lathe adaptability and new product working ability improve greatly.3. because operation quantity You Si road reduces to twice, reduce management difficulty, improved production efficiency, and Supply period shortened greatly.4. save material: lining endoporus is the material that expensive copper powder sintering forms, change the front allowance that need to leave the about 0.3-0.5 millimeter of one side, after changing, do not need to leave this surplus, after lining is pressed into, does not reprocess and be finished product, saved copper powder consumption.The present invention can be widely used on the multiple railway decelerating using now, has both comprised common decelerating, also comprises high-load speed reducing support, has both comprised prototype decelerating, also comprises stop support, locking top, only takes turns top etc., both can be used for medial roof, can be used for again top, outside.

Brief description of the drawings: Fig. 1 is existing housing turning manufacturing procedure structural principle schematic diagram; Fig. 2 is speed-reduction top housing assembling unit structure principle schematic of the present invention; Fig. 3 is housing turning manufacturing procedure structural principle schematic diagram of the present invention; Fig. 4 is housing gland operation structural principle schematic diagram of the present invention.D--lining is to the distance of step II.

Detailed description of the invention: sub-assembly of the present invention comprises housing 1, lining 2, step I 3, step II 4, hole I 5, endoporus II 6, endoporus III 7, installing hole 8, it is characterized in that turner: by the endoporus III 7 of lathe turning housing 1, this operation is not given subsequent handling made allowance, directly the diameter dimension f of the installing hole 8 of the corresponding lining 2 in endoporus III 7 places is processed into φ E, length is that diameter chi b cun of the corresponding endoporus II 6 in e place is processed into φ B;

Gland: lining 2 is pressed in the lining installing hole 8 after housing 1 turning processing, and now, housing 1 length is that lining diameter of bore size corresponding to c place is φ A, and length is that diameter dimension corresponding to e place is φ B.In described housing 1, be provided with endoporus I 5, endoporus II 6, endoporus III 7, described lining 2 is connected with 7 stationary fits of endoporus III.Between described step I 3 and step II 4, it is endoporus II 6.The present invention adopts the numerically controlled lathe that precision is higher.Liner size and precision are adjusted: its external diameter and endoporus dimensional accuracy are all brought up to more than 8 grades, make its external diameter and housing realize interference fit, endoporus a size is more bigger than finished size φ A, guaranteeing to be pressed into dimensional contraction after housing is φ A, requires lining endoporus and external diameter to have strict axiality requirement simultaneously.Operation content of the present invention is simple and easy to do, and effect is remarkable.Through test, meet the technical requirement of housing assembly completely.

Claims (2)

1. the housing assembly preparation for processing of a railway use decelerating, it comprises housing, lining, step I, step II, hole I, endoporus II, endoporus III, installing hole, it is characterized in that turner: by the endoporus III of lathe turning housing, this operation is not given subsequent handling made allowance, directly the diameter dimension f of the installing hole of the corresponding lining in endoporus III place is processed into φ E, length is that diameter chi b cun of the corresponding endoporus II in e place is processed into φ B; Gland: lining is pressed in the lining installing hole after housing turning processing, and now, shell length is that lining diameter of bore size corresponding to c place is φ A, and length is that diameter dimension corresponding to e place is φ B.

2. railway speed-reduction top housing combination unit, is provided with endoporus I, endoporus II, endoporus III in described housing, described lining is connected with the stationary fit of endoporus III.