CN201324947Y

CN201324947Y - Long shaft processing special tooling

Info

Publication number: CN201324947Y
Application number: CNU2008201565432U
Authority: CN
Inventors: 季明浩; 宋步星
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2008-12-04
Filing date: 2008-12-04
Publication date: 2009-10-14
Anticipated expiration: 2018-12-04

Abstract

The utility model discloses a long shaft processing special tooling, which is composed of a lathe main shaft chuck, a tailstock holding chuck, a flange and a top plate and is adaptable to processing long shafts with 20-40 length-diameter ratio. The long shaft processing special tooling utilizes the 'stretching-fixation technique', namely one end of a long shaft is fixed on a main shaft end of a lathe and is tightly clamped by the lathe main shaft chuck, and the other end of the long shaft is held by a chuck on a special tooling on a lathe tailstock, thereby enabling the processed long shaft to be in 'stretching' state, and then the long shaft can not be bent and deformed due to factors such as gravity and the like when processing. The utility model is simple in structure, easy in operation and high in long shaft processing accuracy, can realize mass processing, increases production efficiency and reduces cost.

Description

Major axis processing special tooling

Technical field

The utility model relates to a manufacture field, particularly major axis processing special tooling.

Background technology

Now, engineering goods become more diverse, and develop towards large and small, high and low direction: volume is big, deadweight is little, high accuracy, low surface roughness.

Bearing parts uses in mechanical industry extensively, in space flight, automobile, boats and ships, mining machinery and heavy and light load transmission device application is arranged all.Major axis processing is Machining of Shaft-type Parts, also is a difficult point in the machined.By the processing experience, the ratio with axial length and shaft diameter is referred to as major axis greater than 20 usually.Because the longaxones parts flexibility is big, poor rigidity.During cutting, because the radially amount of deflection that centrifugal force produced that the deadweight of axle produces, and in the turning processing, the system of processing vibration takes place in the manufacturing process system that lathe-anchor clamps-cutter constituted, more than these factors all influence the machining accuracy of major axis.

A traditional axle processing and loading clamp mode is: Double Tops point clamping or two chuck mode clamping, these two kinds of installation way make processed axle be in processed axle to be in an extruded state, and the axle body section upwards easily produces flexural deformation at the diameter of axle.As shown in Figure 1, this clamping technology is only limited to that draw ratio is little, axial length is short or the bigger axle class of shaft run-out tolerance amount can adopt.

In patent retrieval, some are also arranged at the improved patent of major axis clamp for machining, as China Patent No. is a kind of tool holder that is suitable for cutting slender axles of 200720194921.1 inventions, its structure is to have chuck, be fixed with dress cutter blade row on the end face of the claw of chuck, described dress cutter blade row has the square opening that lathe tool is installed with radially consistent being used to of chuck, the sidewall of dress cutter blade row is provided with the screw that ends to the lathe tool locking, the chuck body of chuck is provided with the screw that ends to the claw locking, be fixed with terminal pad on the bottom surface of chuck, a side of terminal pad is provided with and can adds the handle that is held on the lathe saddle.The tool holder of described cutting major axis adds the man-hour multitool and cuts simultaneously, makes the radial cutting force that produces cancel each other, and slender axles just can be in cutting generation flexural deformation like this.Several is lathe tool that cutting tool has been held workpiece again simultaneously firmly, in order to avoid workpiece flexural deformation under the effect of gravity, precision is good.Though described patent has also reached the effect that improves the major axis machining accuracy, major axis remains the extruded state that is in, and the axle body section is in upwards easily generation flexural deformation to a certain degree of the diameter of axle.

The utility model content

Technical problem to be solved in the utility model is, overcome traditional axle processing and loading clamp mode defective that processing exists for major axis, a kind of major axis processing special tooling is provided, major axis is added be in " level is stretching " state man-hour, effectively improved the machining accuracy of major axis.

In order to address the above problem the technical solution of the utility model is such:

Major axis processing special tooling, by the chuck that is installed on the lathe spindle, the clamping chuck, ring flange, bearing and the top board that are fixed on the lathe tailstock constitute jointly.

The described chuck that is installed on the lathe spindle is positioned at a side of processed major axis, and described clamping chuck, ring flange, bearing and top board all are positioned at the opposite side of processed major axis;

Described clamping chuck is fixedlyed connected with described ring flange by two screws; Described bearing is that the bearing chamber by the external diameter of bearing and described ring flange closely cooperates, and is embedded in the bearing chamber of ring flange, and the pointed cone outer circle diameter on the internal diameter of bearing and the lathe tailstock tailstock closely cooperates, and bearing bore diameter is fixed on the lathe pointed cone end face; Described top board is to be connected with bearing fixing by two screws, makes described bearing be in fixing state, non-migration.

After described major axis processing special tooling connects in a manner described, with an end of processed major axis be fixed in described be installed in the chuck on the lathe spindle and clamp after, the other end then is to be clamped by the clamping chuck that is fixed on the lathe tailstock, the part that is held of described major axis is technique head, so special frock can process respectively major axis thick, in, smart three process, can remove after machining.Because the clamping chuck is connected with ring flange by screw, ring flange closely cooperates with bearing again, described bearing is fixedlyed connected by screw with top board, and bearing closely cooperates with lathe tailstock and is connected in aggregates, the past passing that moves to right of the tailstock tail-holder rack of lathe like this, and locking make processed major axis be in " the stretching state of level ", during reprocessing, just can easily not produce flexural deformation as before.

The utility model is simple in structure, and frock making is convenient, is applicable to that draw ratio is 20～40 major axis processing, it by improving, adopts original traditional Double Tops point clamping or two chuck mode installation way " stretched fixation technology ", make the major axis machining accuracy higher, satisfied the designing requirement of processing.The utility model frock can be widely used in mechanical manufacturing field, as manufacturing engineering fields such as mould, five metals, electromechanics, printing machinery.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is the structural representation of the utility model major axis processing special tooling.

Figure 1A is the part-structure enlarged diagram in the utility model.

Fig. 2 is the schematic diagram of ring flange in the utility model.

Fig. 3 is the schematic diagram of top board in the utility model.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Shown in Fig. 1 and Figure 1A, a kind of major axis processing special tooling, by being installed in chuck 1 on the lathe spindle, being fixed on that clamping chuck 3, ring flange 4 (referring to Fig. 2), bearing 5 and top board 6 (referring to Fig. 3) on the lathe tailstock is common to be constituted, processed major axis 2 is between chuck 1 and clamping chuck 3.Be the side that chuck 1 is positioned at major axis 2, clamping chuck 3, ring flange 4, bearing 5 and top board 6 are positioned at the opposite side of major axis 2.

Clamping chuck 3 is fixedlyed connected with ring flange 4 with 32 by two screws 31, and in

screw

31 and 32 the head embedding clamping chuck 3,

screw

31 and 32 afterbody are threaded with ring flange 4;

The bearing chamber of the external diameter of bearing 5 and ring flange 4 closely cooperates, and is embedded in the bearing chamber of ring flange 4, and pointed cone 7 outer circle diameters on the internal diameter of bearing 5 and the lathe tailstock tailstock closely cooperate, and bearing bore diameter is fixed on lathe pointed cone 7 end faces;

Top board 6 is to fixedly connected with bearing 5 with 62 by two screws 61, makes bearing 5 be in fixing state, non-migration, and

screw

61 and 62 head are to head in bearing 5, afterbody is threaded with top board.

After the utility model major axis processing special tooling connects in a manner described, end with processed major axis 2 is fixed in the spindle end of lathe also with after chuck 1 clamping earlier, be fixed in the other end of major axis 2 on the lathe tailstock again and clamp, in accordance with regulations major axis 2 is processed then with clamping chuck 3.Because clamping chuck 3 is fixedlyed connected with ring flange 4 by

screw

31,32, ring flange 4 closely cooperates with bearing 5 again, described bearing 5 is fixedlyed connected by

screw

61,62 with top board 6, and other accessory on bearing 5 and the lathe tailstock and lathe tailstock closely cooperate and are connected in aggregates, the tailstock tail-holder rack of lathe is toward moving to right passing like this, and locking, make processed major axis 2 be in " the stretching state of level ", during reprocessing, just can easily not produce flexural deformation as before, accuracy, the degree of accuracy are all than higher.Major axis is held part for technique head, thus major axis processing special tooling can process respectively major axis thick, in, smart three process, can remove after machining, it suits to be installed on the bigger lathe of all kinds of spindle chuck diameters and track stroke.The utility model by improving, adopts original traditional Double Tops point clamping or two chuck mode installation way " stretched fixation technology ", makes the major axis machining accuracy higher, has satisfied the designing requirement of processing.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1, major axis processing special tooling, comprise the chuck that is installed on the lathe spindle, one end of processed major axis is fixed in the spindle end of lathe and is clamped by described chuck, it is characterized in that, it also comprise the clamping chuck that is fixed on the lathe tailstock, with retaining wedge valve snail nail flange connecting dish, with close-fitting bearing of the bearing chamber of described ring flange and the top board that is connected with described bearing screw, the other end of processed major axis is clamped by the clamping chuck on the described lathe tailstock.

2, major axis processing special tooling according to claim 1 is characterized in that the internal diameter of described bearing and the pointed cone outer circle diameter on the lathe tailstock closely cooperate.

3, major axis processing special tooling according to claim 1 is characterized in that, the part that is held of described major axis is technique head.