CN206484021U

CN206484021U - Increase the powdered metal parts that combined camshaft assembles moment of torsion

Info

Publication number: CN206484021U
Application number: CN201720071113.XU
Authority: CN
Inventors: 汪小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-09-12
Anticipated expiration: 2027-01-20

Abstract

Increase the powdered metal parts that combined camshaft assembles moment of torsion the utility model discloses a kind of, it includes offering at least two grooves on the part noumenon in hexagonal structure, the endoporus of part noumenon at equal intervals, the depth of groove is 0.05mm ~ 1.02mm；The lowermost end of groove is located on using endoporus center as the circle in the center of circle, and the width of groove is that 10 ° ~ 50 ° corresponding arc length are equal with radian on the circle；The powdered metal parts of increase combined camshaft assembling moment of torsion solve the problem of moment of torsion is not enough or relatively low after powdered metal parts assembling by being efficiently modified to part noumenon inner hole structure, improve production efficiency and reduce production cost.

Description

Increase the powdered metal parts that combined camshaft assembles moment of torsion

Technical field

The utility model is specifically related to the powdered metal parts that a kind of increase combined camshaft assembles moment of torsion.

Background technology

At present, a kind of manufacture part of batch micro operations assembled camshaft is as shown in Fig. 1 in Figure of description, and its is hollow The external diameter of steel pipe 6 is smooth cylindrical surface, and the inner bore of part respectively assembled is all smooth circular hole, and certain specification is used after assembling Steel ball 7 makes hollow steel pipe 6 produce the purpose that deformation reaches interference fit by hollow steel pipe 6；In specific implementation, it is desirable to set Count moment of torsion and be more than 118Nm.

But a part on this axle, i.e. powdered metal parts 8, its structure chart as shown in Fig. 2 in Figure of description, by In, through actual test, its moment of torsion is within 130Nm, wherein generally existing moment of torsion after its particularity, circular inner hole Standard Relatively low or deficiency；Therefore, need to carry out the moment of torsion of powdered metal parts 8 100% detection after assembling, reject defective work；And The inspection of moment of torsion is cumbersome, can greatly reduce production efficiency, improves production cost；Even and if the compound cam of passed examination Axle, because the safety value of the moment of torsion of powdered metal parts 8 is relatively low, there is also certain risk.

Utility model content

The purpose of this utility model is to provide the powdered metal parts that a kind of increase combined camshaft assembles moment of torsion, to solve The problem of moment of torsion is not enough or relatively low after powdered metal parts assembling.

In order to solve the above technical problems, the utility model provides the powder metallurgy that a kind of increase combined camshaft assembles moment of torsion Part, it includes offering at least two grooves at equal intervals on the part noumenon in hexagonal structure, the endoporus of part noumenon, recessed The depth of groove is 0.05mm~1.02mm；The lowermost end of groove be located at using endoporus center as the circle in the center of circle on, the width of groove with Radian is that 10 °~50 ° corresponding arc length are equal on the circle.

Further, groove is sipes.

Further, groove is arc groove.

Further, groove is 2~18.

Further, the depth of groove is 0.1mm.

Further, the width of groove is that 30 ° of corresponding arc length are equal with radian on the circle.

Further, the depth for the mounting hole being arranged on part noumenon is 0.5mm.

The beneficial effects of the utility model are：The powdered metal parts of increase combined camshaft assembling moment of torsion pass through to it Inner hole structure is efficiently modified so that the sagittal plane of the hollow steel pipe external diameter at part noumenon is by uneven at equal intervals Power；And due to the inequality of deformation, reached moment of torsion into the increase of multiple, solve moment of torsion after powdered metal parts assembling it is not enough or Relatively low the problem of, improve production efficiency and reduce production cost, its improvement is convenient, with stronger practicality, is easy to push away Wide application；Meanwhile, the moment of torsion of the part noumenon is all higher than 300Nm (the detection device upper limit), can save 100% full inspection moment of torsion This process, improves production efficiency, and the low or not enough risk of moment of torsion is solved well.

Brief description of the drawings

Fig. 1 show schematically the part-structure schematic diagram that assembled camshaft in the prior art manufactures part.

Fig. 2 show schematically the structural representation of the powdered metal parts of increase combined camshaft assembling moment of torsion.

The structure that Fig. 3 show schematically the arc groove of the powdered metal parts of increase combined camshaft assembling moment of torsion is shown It is intended to.

Wherein：1st, part noumenon；2nd, endoporus；3rd, groove；4th, lowermost end；5th, mounting hole；6th, hollow steel pipe；7th, steel ball；8、 Powdered metal parts.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a kind of embodiment of the utility model, rather than whole realities Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made The every other embodiment obtained, belongs to protection domain of the present utility model.

To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this Application is described in further detail.

In the following description, the reference to " one embodiment ", " embodiment ", " example ", " example " etc. shows The embodiment or example so described can include special characteristic, structure, characteristic, property, element or limit, but not each real Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to One embodiment of the application " is not necessarily referring to identical embodiment although it is possible to refer to phase be the same as Example.

For the sake of simplicity, the common technical knowledge well known to technical field technical staff is eliminated in herein below.

The powdered metal parts that combined camshaft assembles moment of torsion are increased there is provided a kind of according to one embodiment of the application, As shown in Figures 2 and 3, the powdered metal parts of increase combined camshaft assembling moment of torsion include the part noumenon in hexagonal structure 1, at least two grooves 3 are offered on the endoporus 2 of part noumenon 1 at equal intervals, the depth of groove 3 is 0.05mm~1.02mm； The lowermost end 4 of groove 3 is located on using the center of endoporus 2 as the circle in the center of circle, and the width of groove 3 is 10 °~50 ° right with radian on the circle The arc length answered is equal.

In specific implementation, the combined camshaft of part noumenon 1 is assembled, when steel ball 7 is by 6 endoporus 2 of hollow steel pipe, The sagittal plane of the external diameter of hollow steel pipe 6 at part noumenon 1 can be by power uneven at equal intervals；Wherein, the external diameter of hollow steel pipe 6 It is more than the external diameter of hollow steel pipe 6 and the deformation of the contact position of part noumenon 1 in the deformation produced by the position of endoporus 2；Due to deformation not , so as to reach moment of torsion into the increase of multiple, the problem of moment of torsion is not enough or relatively low after powdered metal parts 8 are assembled is solved, its By being efficiently modified to the endoporus 2 of powdered metal parts 8, improving production efficiency and production cost can be reduced, its improvement is convenient, It is easy to utilize with stronger practicality.

In actual experiment, tested test by the moment of torsion to part noumenon 1, draw the moment of torsion of the part noumenon 1 The result of 300Nm (the detection device upper limit) is all higher than, in practical operation, 100% full inspection moment of torsion this process can be saved, Production efficiency is improved, the low or not enough risk of moment of torsion is solved well.

According to one embodiment of the application, groove 3 is sipes, and groove 3 is 2~6.

According to one embodiment of the application, groove 3 is arc groove, and groove 3 is 2~18；It is excellent in specific implementation It is 6 to select groove 3.

According to one embodiment of the application, the depth of groove 3 is 0.1mm.

According to one embodiment of the application, the width of groove 3 is that 30 ° of corresponding arc length are equal with radian on the circle.

According to one embodiment of the application, the depth for the mounting hole 5 being arranged on part noumenon 1 is 0.5mm.

In specific implementation, the part noumenon 1 of the powdered metal parts of increase combined camshaft assembling moment of torsion is to pass through Powder metallurgical technique is manufactured, and its structure of endoporus 2 reaches drawing requirement by finishing again after mould disposal pressed moulding, sintering Precision, convenient and suitable high-volume manufacture；The structure of its endoporus 2 can be adjusted according to required torque in practical operation Form and size.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality Type.A variety of modifications to these embodiments will make it will be apparent that defined herein for those skilled in the art General Principle can in other embodiments be realized in the case where not departing from the spirit or scope of utility model.Therefore, originally Utility model will not be limited and the embodiments shown herein, and be to fit to and principles disclosed herein and novelty The property consistent most wide scope of feature.

Claims

1. a kind of increase the powdered metal parts that combined camshaft assembles moment of torsion, it is characterised in that：Including in the zero of hexagonal structure Part body（1）, the part noumenon（1）Endoporus（2）On offer at least two grooves at equal intervals（3）, the groove（3） Depth be 0.05mm ~ 1.02mm；The groove（3）Lowermost end（4）Positioned at endoporus（2）Center is institute on the circle in the center of circle State groove（3）Width and radian on the circle be that 10 ° ~ 50 ° corresponding arc length are equal.

2. increase combined camshaft according to claim 1 assembles the powdered metal parts of moment of torsion, it is characterised in that：It is described Groove（3）For sipes.

3. increase combined camshaft according to claim 1 assembles the powdered metal parts of moment of torsion, it is characterised in that：It is described Groove（3）For arc groove.

4. increase combined camshaft according to claim 1 assembles the powdered metal parts of moment of torsion, it is characterised in that：It is described Groove（3）For 2 ~ 18.

5. the increase combined camshaft according to any one of claim 1 ~ 4 assembles the powdered metal parts of moment of torsion, its feature It is：The groove（3）Depth be 0.1mm.

6. increase combined camshaft according to claim 5 assembles the powdered metal parts of moment of torsion, it is characterised in that：It is described Groove（3）Width and radian on the circle be that 30 ° of corresponding arc length are equal.

7. increase combined camshaft according to claim 1 assembles the powdered metal parts of moment of torsion, it is characterised in that：Set In the part noumenon（1）On mounting hole（5）Depth be 0.5mm.