CN203374770U

CN203374770U - Integrated planet carrier

Info

Publication number: CN203374770U
Application number: CN201320496471.7U
Authority: CN
Inventors: 刘洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2014-01-01
Anticipated expiration: 2023-08-09

Abstract

The utility model relates to an integrated planet carrier. The integrated planet carrier is provided with three planet gears, and comprises three external gear rings used for installing the planet gears, an internal gear ring in the center of the planet carrier, and three fixing columns connected with an upper cover and a lower cover of the planet carrier. The integrated planet carrier is characterized in that the first fixing column and the second fixing column are provided with inclined notches, the two inclined notches are formed oppositely, and the intersection line of the planes where the two inclined notches are located is on the same side as the third fixing column. The integrated planet carrier is low in production cost.

Description

The integral type planet carrier

[technical field]

The utility model belongs to Design of Dies and manufacture technology field, relates to a kind of integral type planet carrier.

[background technique]

Planet carrier is one of main member of planetary type gear transmission unit, planet wheel shaft or bearing just are contained on planet carrier, integral type planet carrier good rigidly, if but this structure adopts integrate forging process, the cutting amount is very large, small planet carrier particularly, the cutting difficulty is larger, so the planet carrier of employing plastic material gradually replaced the planet carrier of metal material afterwards, the plastics planet carrier need to be taked the mode of loosing core when the injection moulding demoulding, the injection moulding demoulding of mode need to take three faces to loose core when to(for) the integral type planet carrier of the plastic material with three planet wheels.Three faces are loosed core can increase the volume of mould significantly, increases the cost of production of mould, also can reduce manufacturing efficiency, stripping means and the mould of also for the integral type planet carrier with three planet wheels, not taking two sides to loose core on the market at present simultaneously.

[model utility content]

The purpose of this utility model is exactly the problem existed in order to solve prior art, has proposed a kind of integral type planet carrier.

Concrete technological scheme of the present utility model is as follows:

Model utility provides a kind of integral type planet carrier, this planet carrier is the planet carrier with three planet wheels, comprise that three for the external toothing of installing planet wheel, the ring gear that is positioned at the planet carrier center and three fixing columns that connect the planet carrier upper and lower covers, it is characterized in that, the first fixing column and the second fixing column have an angular cut, two angular cuts are oppositely arranged, and two angular cut place plane convergence lines and the 3rd fixing column are in the same side.

Two angular cuts are symmetrical arranged, the both sides of another fixing column are the flat mouth corner cut, and the plane at the angular cut place of the first fixing column or the second fixing column and the 3rd fixing column and the first fixing column or the second fixing column are at the tangent plane of the flat mouth corner cut of homonymy at grade.

The inboard of three fixing columns is all tangent with ring gear, and the side that described the first fixing column or the second fixing column are relative with the 3rd fixing column is circular arc.

The technique effect that the utility model is useful is:

The utility model needs three faces to loose core while by the injection moulding by traditional, having the planet carrier of three planet wheels to make the mode of loosing core in two sides into, on the basis that does not affect the use of planet carrier function, after having improved the mode that the demoulding looses core, not only make the volume of mould reduce, cost, can hold more die cavity but also can make in single mould, can the more planet wheel product of depanning thereby disposable, manufacturing efficiency improves greatly, and the cost of integral type planet carrier is cheaper.

[accompanying drawing explanation]

The perspective view that Fig. 1 is the utility model planet carrier;

The cross sectional view that Fig. 2 is the utility model planet carrier;

The perspective view that Fig. 3 is the utility model planet carrier mould;

The core pulling method schematic diagram of Fig. 4 the utility model planet carrier mould.

[embodiment]

For the purpose, technological scheme and the advantage that make model utility is clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the utility model, is not used for limiting the utility model.

Embodiment

The planet carrier mould that the utility model provides a kind of integral type to have three planet wheels, processing method and the planet carrier processed by the method, as illustrated in fig. 1 and 2, it is of the present utility model that to have three planet wheel planet carriers 10 similar with planet carrier of the prior art, comprise three external toothings 11 for installing planet wheel, be positioned at the circular ring gear 12 at planet carrier center, three fixing columns 15 that connect planet carrier upper cover 13 and lower cover 14, be positioned at external toothing 11 center and be provided with two axis holes 16 for installing the planet wheel rotating shaft on upper cover 13 and lower cover 14, three fixing columns 15 are respectively the first fixing column 151 and the second fixing column 152 and the 3rd fixing column 153, difference is, the outer side surface 1511 of the first fixing column 151 is external arc, with the circular peripheral edge portion of planet carrier, overlap, the first side 1512 in two inner side surfaces of the first fixing column 151 is intrados, the second side 1513 in two inner side surfaces of the first fixing column 151 is interior circular arc, the interior circular arc of the second 1513 places, side and the circular edge of ring gear 11 partially overlap, compare the first side 1512, there is the first otch 1514 on this second side, described the first otch 1514 is angular cut, the tangent tangent line of described the first fixing column 152 and ring gear 12 is the crossing intersection of the first otch 1514 and ring gear 12.With this first otch 1514 for planet carrier center line symmetry is the second otch 1521, described the second otch 1521 is positioned on the first side 1522 of the second fixing column, the first side 1522 of the second fixing column and the second side 1513 of the first fixing column are with respect to planet carrier center line symmetry, the shape of the second fixing column is identical with the shape of the first fixing column, and the second fixing column and the first fixing column are with respect to planet carrier center line symmetry.

The 3rd fixing column 153 is relative with the second fixing column 152 with the first fixing column 151, and the 3rd fixing column 153, the first fixing column 151 and the second fixing column 152 inboards equate with the tangent tangent distance of ring gear, the plane convergence line at the first otch 1514 and the second otch 1521 places and the 3rd fixing column are in the same side, the 3rd fixing column 153 comprises two inner side surfaces 1531 and an outer side surface 1532, two inner side surfaces are intrados, all there is a flat mouth corner cut on two inner side surfaces 1531, the first otch 1514 of the first fixing column with on the 3rd fixing column 153 and with the first fixing column in the flat mouth corner cut of the same side at grade, the second otch 1521 of the second fixing column with on the 3rd fixing column 153 and with the second fixing column in another flat mouth corner cut of the same side at grade.The outer side surface 1532 of described the 3rd fixing column 153 is exterior arc surface, and this exterior arc surface overlaps with the circular peripheral edge portion of planet carrier, and the tangent face of described the 3rd fixing column 153 and ring gear is arc shaped surface.

Be injection molded into the planet carrier of above-mentioned shape, corresponding mould as shown in Figure 3, this mould 20 comprises a plurality of die cavitys, each die cavity can inject a planet carrier, can inject a plurality of planet carriers during the injection moulding depanning simultaneously, this mould and existing injection mould are similar, comprise the fixed half and moving half (not shown), difference is, be oppositely arranged the merging of two-phase interworking and piece together the first slide block 21 and the second slide block 22 with planet carrier die cavity between fixed half and moving half, the first slide block 21 has a plurality of wedge shaped projection that are set up in parallel 211, the front end of this wedge shaped projection 211 is little, rear end is large, front end at projection 211 has the first groove 2111, described the first groove 2111 is positioned at the center of projection front end, the first groove is " V-arrangement ", the bottom of the first groove is arc, the front end of the both sides 2112 of described wedge shaped projection is plane, described the first slide block 21 also has the both sides that 212 two the second grooves 212 of two the second grooves are positioned at the end of projection 211, described the second groove 212 is arc-shaped surface with the side 2121 that projection 211 joins, the side 2122 that described the second groove 212 is relative with projection 211 is arc shaped surface, the end of described groove 212 is wedge angle, one side of described the second groove 212 is projection 211, opposite side is platform 213, the face that this platform 213 and the second slide block 22 face is also plane.

Described the second slide block 22 has " U-shaped " groove 221 of being set up in parallel and with projection matching identical with projection 211 numbers, the rear bottom 2211 of described " U-shaped " groove 221 is circular arc, the rear bottom 2211 of described " U-shaped " groove 221, the first groove 2111, the fixed half and moving half cavity geometry that amalgamation forms together is identical with the 3rd fixing column 153, i.e. plastic injection-moulded formation the 3rd fixing column 153 in this cavity, the both sides of described " U-shaped " groove 221 are plane, when the platform of the first slide block 21 and the second slide block 22 contact, the both sides of described " U-shaped " groove 221 contact with the both sides 2112 of wedge shaped projection 211, described the second slide block 22 also has two projections 222, described two projections 222 are positioned at the both sides at the front top of " U-shaped " groove 221, described protruding 222 crowning is arc, described protruding 222, the second groove 212, the cavity geometry that the amalgamation of fixed half and moving half institute forms is identical with the first fixing column or the second fixing column, the plastics in this cavity form the first fixing column or the second fixing column for injection moulding.When the first slide block and the second slide block contact, described projection 211 inserts in described " U-shaped " grooves 221, and the top of described " U-shaped " groove 221 contacts with 2121 tops, side that join with projection 211 with the second groove 212.

As shown in Figure 4, when this planet carrier adopts the method for injection moulding to be processed the demoulding, first fixed half and moving half is separated, and then eject a plurality of planet carriers of molding and forming with thimble, when dynamic model and cover half are separated, the first slide block and the second slide block are separated automatically.

In order to guarantee that the first slide block can successfully separate with the second slide block, need to guarantee, described the second slide block while meeting with the first slide block relative surface of contact to " U-shaped " groove bottom apart from the radius that is greater than planet carrier.Be preferably, the described platform 213 i.e. surface of contact (mold joint) of the first slide block 21 and the second slide block 22 is mutually concordant with the separatrix of outer side surface 1511 with the first side 1512 of the first fixing column, and the separatrix of the first side 1522 of the surface of contact (mold joint) of the first slide block 21 and the second slide block 22 and the second fixing column and outer side surface is mutually concordant.

It should be noted that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. an integral type planet carrier, this planet carrier is the planet carrier with three planet wheels, comprise that three for the external toothing of installing planet wheel, the ring gear that is positioned at the planet carrier center and three fixing columns that connect the planet carrier upper and lower covers, it is characterized in that, the first fixing column and the second fixing column have an angular cut, two angular cuts are oppositely arranged, and two angular cut place plane convergence lines and the 3rd fixing column are in the same side.

2. integral type planet carrier according to claim 1, it is characterized in that, two angular cuts are symmetrical arranged, the both sides of another fixing column are the flat mouth corner cut, and the plane at the angular cut place of the first fixing column or the second fixing column and the 3rd fixing column and the first fixing column or the second fixing column are at the tangent plane of the flat mouth corner cut of homonymy at grade.

3. integral type planet carrier according to claim 1 and 2, is characterized in that, the inboard of three fixing columns is all tangent with ring gear, and the side that described the first fixing column or the second fixing column are relative with the 3rd fixing column is circular arc.