CN2768922Y

CN2768922Y - Equipment for producing ship large diesel engine crankshaft crank throw

Info

Publication number: CN2768922Y
Application number: CN 200420076782
Authority: CN
Inventors: 周德祥; 邹卫; 沈成义; 徐杰; 谈力; 陈国遂; 吴宏伟
Original assignee: Wuhan Heavy Industry Casting and Forging Co Ltd
Current assignee: Wuhan Heavy Industry Casting and Forging Co Ltd
Priority date: 2004-09-29
Filing date: 2004-09-29
Publication date: 2006-04-05
Anticipated expiration: 2014-09-29

Abstract

The utility model relates to a device for producing ship large diesel engine crankshafts and cranks. The device is composed of a hydraulic die press, a concave die element composed of a concave die block, a die pressing ring and a die fixing ring which are assembled together and a plate-shaped punching head element composed of a plate-shaped punching head, an upsetting disc, etc. When the utility model is produced, a blank is put into a concave die and the upsetting disc is put down for pressurizing. Thus, the blank is upset and deformed until the blank is closely stuck to a die wall. Then, the upsetting disc is taken away, the punching head is withdrawn after the blank is punched to a specified depth by the plate-shaped punching head. A workpiece is pushed out and is arranged in a stove for heat treatment for producing a product. The utility model can be used for producing crankshaft crank elements on MAN B&W and WNSD diesel engines of whole types with a low speed and large horsepower. Dimensions, outer shapes, internal and external qualities and mechanical properties of the produced crankshafts and cranks can all reach international standards. The utility model can be completely used for the ship large diesel engine crankshafts.

Description

Large diesel engine for ship crankshaft crank manufacturing installation

Technical field

The utility model relates to the process units of large diesel engine for ship crankshaft crank.

Background technology

Along with developing rapidly of China's shipping industry, China's shipbuilding industry sharply rises to the requirement of forging peculiar to vessel at present, and this just requires the forging manufacturing firm of China to change idea, develops make new advances forging and new technology as early as possible, satisfies the requirement of shipbuilding industry, to reduce import.Bent axle is the vitals of large ship diesel engine, and performance requirement is very high, can be divided into the integral one-piece crankshaft that forges or cast by its manufacture method; By forging and the crank throw assembling of casting or combination, the half built-up crank shaft of welding.The restriction of ability is smelted and forged to integral one-piece crankshaft, is confined to small-sized bent axle.Large-scale bent axle must adopt combined method production, and the difficult point that built-up crankshaft forges is that crank throw forges.The method of making at present the crank throw parts in the world mainly is curved forging method, secondly is piece type forging method, ring rolling method, die forging.Each method has the pluses and minuses of each method.And the key of each method is its manufacturing device.Now external crank throw process units do not possess jumping-up distortion and split be swaged into just as the time function of carrying out and the function of guiding, cause thus that the crankshaft crank production process is long, product percent of pass is not high, stock utilization is low, cost is than problems such as height.

Owing to the production difficulty of large-scale crankshaft crank reaches other reasons greatly, at present, the whole dependence on import of domestic large diesel engine for ship bent axle, price height, cycle are long.Bent axle has become " bottleneck " of China's shipping industry development, is the development of domestic shipbuilding industry, must realize the production domesticization of bent axle, realize production domesticization, and the process units of oneself must be arranged.

Summary of the invention

Of the present utility model day aim to provide that a kind of qualification rate height, metal streamline are good, dense structure, machine add the large diesel engine for ship crankshaft crank manufacturing installation that expense is low, stock utilization is high, operation is short, cost is low.

The implementation of the utility model purpose is, large diesel engine for ship crankshaft crank manufacturing installation, comprise hydraulic die press, die parts and plate shape staking punch parts, the die parts have four

die pieces

2,5, four die pieces are fixed with pressing mold circle 1, cover half circle 3 respectively up and down, there is knock-pin 4 at cover half circle 3 middle parts, plate shape drift 17 tops of plate shape punch member have drift to adjust seat 12, a pad 13 is adorned on drift top, there are adjusting rod 15, adjusting nut 14 in the pad both sides, jumping-up dish 18 is arranged at the bottom, and jumping-up dish 18 links to each other with plate shape drift 17 by loading and unloading pin 16.

Can produce MAN B﹠amp with the utility model; The crankshaft crank parts of W and the whole types of WNSD diesel engine, type comprises: 6S35MC, 6S42MC-7,6S46MC-C, 6L50MC-5,6S50MC-6,6S50MC-C, 6L60MC, 6S60MC-6,6S60MC-C, 6L70MC-6,6S70MC, 6K80MC-C, 7S80MC-C, 6S90MC-C, 7K98MC-C.

The utlity model has jumping-up distortion and split be swaged into just as the time function of carrying out and the function of guiding, can guarantee that the fiery high-quality of crank throw one is shaped, thereby make that the crank throw production process is short, product percent of pass is high, stock utilization is high, metal streamline is good, dense structure, machine add that expense is low, cost is low.

Description of drawings

Fig. 1 a, b are die modular construction master, side view

Fig. 1 c is the vertical view of Fig. 1 a

Fig. 1 d is the upward view of Fig. 1 b

Fig. 2 a, b are die modular construction master, side view

Also have mould sole piece 6, screw 7, packing ring 8,

alignment pin

9,10, soket head cap screw 11 among the figure.

The specific embodiment

The utility model comprises hydraulic die press, and by die

piece

2,5, the die parts of pressing mold circle 1,3 assemblings of cover half circle are by the plate shape punch member of assemblings such as plate shape drift 17, jumping-up dish 18.

The utility model is described in detail in detail with reference to the accompanying drawings,

With reference to Fig. 1, the die parts adopt four

die pieces

2,5 to add a pressing mold circle 1 and a cover half circle 3 assembles, this structure both helped mould manufacturing, reduce cost, improved the serviceability of die again comprehensively, do not make mould yielding and crack, thereby significantly improve the service life of mould.

With reference to Fig. 2, plate shape punch member is assembled by drift adjustment seat 12, plate shape drift 17, adjusting rod 15, loading and unloading pin 16, jumping-up dish 18, be characterized in having increased newly plate shape drift 17, adjusting rod 15 and loading and unloading pin 16, the front, rear, left and right anglec of rotation of plate shape drift position can be regulated within the specific limits, so just can guarantee coincideing of plate shape drift and die, make to split to be swaged into to be possible.On plate shape drift 17, hang up jumping-up dish 18 in addition with loading and unloading pin 16, the jumping-up dish in use, can load and unload freely, the use of jumping-up dish can be carried out distortion of blank jumping-up and crimp simultaneously, just two work one fire are finished, shorten operation, improved the production efficiency of crankshaft crank.

In two molds, all designed guided way and gathering sill, can be controlled in the scope of requirement, guaranteed that high-quality is shaped, thereby improved crank throw product percent of pass and stock utilization greatly to guarantee the off-centre that crank throw produces in deformation process.

Concrete grammar with the utility model production is, the blank that heats is put into die, and just puts and put well, drives hydraulic press into.With jumping-up dish pressurization, shift onto at the bottom of the die blank and pressurization, make blank produce a certain amount of jumping-up distortion, unload the jumping-up dish, leave hydraulic press, the jumping-up dish is called away.Withdraw from drift after driving the degree of depth that hydraulic press is stamped into blank with plate shape drift regulation again into, leave hydraulic press, workpiece is ejected, advance the furnace treatment reason and promptly get product.

When jumping-up is out of shape, adopted process, thereby reduced the jumping-up deformation force from local deformation to comprehensive distortion, for this reason, adopt the utility model, just can be with the bigger crankshaft crank of the hydraulic press production of less tonnage.

Claims

1, large diesel engine for ship crankshaft crank manufacturing installation, it is characterized in that comprising hydraulic die press, die parts and plate shape staking punch parts, the die parts have four die pieces (2), (5), four die pieces are up and down respectively with pressing mold circle (1), cover half circle (3) is fixing, there is knock-pin (4) at cover half circle (3) middle part, plate shape drift (17) top of plate shape punch member has drift to adjust seat (12), a pad (13) is adorned on drift top, there is adjusting rod (15) on the pad both sides, adjusting nut (14), jumping-up dish (18) is arranged at the bottom, and jumping-up dish (18) links to each other with plate shape drift (17) by loading and unloading pins (16).