CN101497103B

CN101497103B - Processing method of upper shaft used for steering apparatus

Info

Publication number: CN101497103B
Application number: CN2008101725328A
Authority: CN
Inventors: 慎泰重
Original assignee: Kowoo Co Ltd
Current assignee: Kowoo Co Ltd
Priority date: 2008-01-31
Filing date: 2008-10-27
Publication date: 2011-03-02
Anticipated expiration: 2028-10-27
Also published as: KR20090084146A; CN101497103A; KR100964882B1

Abstract

The invention relates to a method for processing an upper end shaft of a steering device capable of improving the processing density, saving cost of materials and improving the processing speed. The processing method comprises processing a cylindrical tube (30a) into first to second deformative shafts sequentially to obtain the upper end shaft finally. The method for processing the upper end shaft reduces thickness of a hollow tube and prolongs a length sequentially, and an inner key slot is formed by inserting a spindle having key slot, thereby improving the processing precision, saving materials, and improving the processing speed.

Description

The processing method that is used for the upper shaft of transfer

Technical field

The present invention relates to a kind of processing method that is used for the upper shaft of transfer, particularly relate to a kind of processing method (upper shaft manufacturing method for steering apparatus) that can improve processing density, save the upper shaft that is used for transfer of Master Cost and raising process velocity.

Background technology

Usually, collide or rear-end collision with other vehicles or other external structure things in travelling in order to tackle, various vehicles all have safety device, for example, steering be provided with absorb or impulsive force (by deflection steer post (column)) that buffering produces when colliding when reducing collision because of driver's the mobile safety device that puts on the impulsive force of chest.

With reference to figure 1 and Fig. 2, aforesaid the impact absorbing structure of the steering of shock absorbing power comprises by the distortion of steering column part: be accommodated in the following pipe LT/ that is fixed on instrument board (Dashboard) position by support B, B ＇ and go up in the pipe RT, and be incorporated into upper shaft 1 on the deflecting roller; Be formed on this upper shaft and be connected, the revolving force of deflecting roller is conveyed to lower end axle 2 positions of transmission case, play 1 ＇ of plastic shaping portion of connection effect.

The as above steering of structure, the driver is subjected to impact force action to deflecting roller one side shifting and apply impulsive force F when vehicle collides, then pass through deflecting roller, upper shaft 1 is passed to lower end axle 2 directions, destroy two ends and connect this 1 ＇ of plastic shaping portion of 1,2, thereby reduce the impulsive force that conveys to the driver.

In this transfer, usually, the upper shaft of automobile is to process and hollow formation by turning (turning) or broaching (broaching), at this moment, the apparatus structure complexity forms quill shaft from real axis, therefore material consumption is bigger, and processing precise degree and process velocity reduce.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of processing method that is used for the upper shaft of transfer, makes the processing precise degree improve, and saves material, improves process velocity.

In order to achieve the above object, the invention provides a kind of processing method that is used for the upper shaft of transfer, the upper end bonding position dish of described upper shaft, by the bottom slidably in conjunction with the lower end axle, it is characterized in that described upper shaft 30 comprises: in conjunction with first joint portion 31 of deflecting roller; Be formed with the internal diameter keyway, and in conjunction with second joint portion 33 of described lower end axle; Be formed at the tapered portion 32 between described first, second

joint portion

31,33, described processing method comprises:

A prepares the step of cylindrical tube 30a;

B is inserted in first axle 11 with described cylindrical tube 30a and dwindles the diameter of the leading section corresponding with described first joint portion 31, thereby forms the step that interim first tapered portion forms deformed shaft 30b in the part corresponding with described tapered portion 32;

C is inserted in second axle 12 with the described first deformed shaft 30b and dwindles the diameter of described leading section, reduces the gradient of described interim first tapered portion, forms the step of the second deformed shaft 30c to form interim second tapered portion;

D is inserted in the 3rd axle 13 with the described second deformed shaft 30c and makes gradient less than the gradient of described interim third hand tap shape portion, thereby forms the step of the 3rd deformed shaft 30d;

E is inserted in the 4th axle 14 with described the 3rd deformed shaft 30d and forms the warning groove in described interim tapered portion, thereby forms the step of the 4th deformed shaft 30e;

F is inserted in the 5th axle 15 with described the 4th deformed shaft 30e and elongates the length of described second joint portion 33, thereby forms the step of the 5th deformed shaft 30f;

G is inserted in the 6th axle 16 with described the 5th deformed shaft 30f and forms keyway 33a at the inside diameter of described second joint portion 33, thereby forms the step of the 6th deformed shaft 30g;

H is connected in front end with the 7th axle 61 and is formed with polygonal footpath square 62 and the compression by compressor reducer 60 and the cylinder 63 of sliding and running admittedly, make described the 7th axle to come in and go out from described sizing square 62, described the 6th deformed shaft 30g is inserted in described the 7th axle 61, and described sizing square 62 between elongate described the 6th deformed shaft 30g second joint portion, thereby form the step of upper shaft 30.

Technique effect of the present invention is, reduces the thickness of hollow tube successively and extending length, and the axle that is formed with keyway by insertion forms the internal diameter keyway, thereby improves the processing precise degree, saves material, improves process velocity.

Description of drawings

Fig. 1 is the schematic diagram of the critical piece of the transfer of use upper shaft;

Fig. 2 is the summary schematic cross-section of Fig. 1;

Fig. 3 is the schematic cross-section of cylindrical tube;

Fig. 4 a to 4g is for being processed into the deformation process schematic diagram of upper shaft from cylindrical tube;

Fig. 5 a to 5f is processed into the sectional view of upper shaft for A-A line, B-B line, C-C line, D-D line, E-E line and F-F line part among Fig. 7 from cylindrical tube;

Fig. 6 a to Fig. 6 d is the schematic cross-section of the process of second joint portion of formation upper shaft;

The device schematic diagram of Fig. 7 for being suitable in the upper shaft processing method among the present invention.

The specific embodiment

Below to turning to device to describe in the embodiment of the invention with the upper shaft processing method.

With reference to Fig. 4 g, upper shaft 30 comprises: in conjunction with first joint portion 31 of the hexagonal cross-sectional shapes of deflecting roller; Be formed with internal diameter keyway (spline), and in conjunction with second joint portion 33 of lower end axle; Be formed at the tapered portion 32 between this first, second

joint portion

31,33.

Fig. 5 to Fig. 7 is a schematic diagram of realizing the preferable processing unit (plant) of the processing method among the present invention, and Fig. 5 a to Fig. 5 f is respectively A-A line among Fig. 7, B-B line, C-C line, D-D line, E-E line and F-F line sectional view.

Processing method in the embodiment of the invention such as Fig. 7, (30b～30f) moves successively respectively and is inserted on the fixed block 10 and processes with the deformed shaft of distortion gradually.

(a) at first, as shown in Figure 3, prepare columniform pipe 30a.

(b) then, the 5a of A-A line partial cross section and Fig. 4 a in the reference table diagrammatic sketch 7, then above-mentioned cylindrical tube 30a is inserted in first axle (mandrel) 11 in the fixed block 10, the drive block 20 that mobile pressurization has first square (dice) 21 dwindles and the corresponding leading section diameter in above-mentioned first junction surface 31, and form interim first tapered portion, thereby form the first deformed shaft 30b as Fig. 4 a in the part corresponding with described tapered portion 32.

At this moment, between first square 21 and first axle 11, the leading section of cylindrical tube 30a is pressurized and diameter is reduced, forms interim first tapered portion.

(c) then, Fig. 5 b of B-B line partial cross section and Fig. 4 b in the reference table diagrammatic sketch 7 clamp the above-mentioned first deformed shaft 30b and are inserted into adjacent fixed block 10.

The above-mentioned first deformed shaft 30b is inserted in second axle 12 in the fixed block 10, by moving the diameter that drive block 20 that pressurization has second square 22 dwindles above-mentioned leading section, the gradient that reduces above-mentioned interim first tapered portion, thereby form interim second tapered portion, finally form second deformed shaft (30c) as shown in Fig. 4 b.

(d) then, Fig. 5 c and Fig. 4 c in the cross section of C-C line part in the reference table diagrammatic sketch 7, the above-mentioned second deformed shaft 30c is inserted in the 3rd axle 13 of fixed block 10, the drive block 20 that moving exerts pressure has third party's piece 23 reduces the gradient of above-mentioned interim second tapered portion, thereby forms the 3rd deformed shaft 30d shown in Fig. 4 c.

(e) then, Fig. 5 d and Fig. 4 d in the cross section of D-D line part in the reference table diagrammatic sketch 7, above-mentioned the 3rd deformed shaft 30d is inserted in the 4th axle 14 of fixed block 10, form the warning groove by moving the drive block 20 that pressurizes in above-mentioned interim tapered portion, finally form the 4th deformed shaft 30e shown in Fig. 4 d with square 24.

(f) then, Fig. 5 e and Fig. 4 e in the cross section of E-E line part in the reference table diagrammatic sketch 7, above-mentioned the 4th deformed shaft 30e is inserted in the 5th axle 15 of fixed block 10, elongate the length of described second joint portion 33 by moving the drive block 20 that pressurizes, thereby form the 5th deformed shaft 30f shown in Fig. 4 e with the 5th square 25.

(g) then, Fig. 5 f and the 4f in the cross section of F-F line part in the reference table diagrammatic sketch 7, above-mentioned the 5th deformed shaft 30f is inserted in the 6th axle 16 of fixed block 10, inside diameter by moving drive block 20 that pressurization has the 6th square 26 in above-mentioned second joint portion 33 forms keyway 33a, thereby forms the 6th deformed shaft 30g shown in Fig. 4 f.

(h) then, with reference to Fig. 6 a to Fig. 6 d, front end is formed with polygonal sizing square (sizing dice) 62 and is connected in the 7th axle 61 at the cylinder 63 of the effect lower slider of the Compressed Gas of compressor reducer 60, the 7th axle 61 can be come in and gone out by above-mentioned sizing square 62, shown in Fig. 6 b, above-mentioned the 6th deformed shaft 30g is inserted in above-mentioned the 7th axle 61, by mobile pressurised driving piece 70, and described sizing square 62 between reduce the thickness of above-mentioned the 6th deformed shaft 30g and elongate second joint portion to form upper shaft 30, as Fig. 6 c and 6d, cylinder 63 is given prominence to and taking-up upper shaft 30 to the right.

Claims

1. processing method that is used for the upper shaft of transfer, the upper end bonding position dish of described upper shaft, is characterized in that slidably in conjunction with the lower end axle by the bottom,

Described upper shaft (30) comprising: in conjunction with first joint portion (31) of deflecting roller; Be formed with the internal diameter keyway, and in conjunction with second joint portion (33) of described lower end axle; Be formed at the tapered portion (32) between described first, second joint portion (31,33),

Described processing method comprises:

(a) step of preparation cylindrical tube (30a);

(b) described cylindrical tube (30a) is inserted in first axle (11) and dwindles the diameter of the leading section corresponding, thereby form the step that interim first tapered portion forms first deformed shaft (30b) in the part corresponding with described tapered portion (32) with described first joint portion (31);

(c) described first deformed shaft (30b) is inserted in second axle (12) and dwindles the diameter of described leading section, reduce the gradient of described interim first tapered portion, form the step of second deformed shaft (30c) to form interim second tapered portion;

(d) described second deformed shaft (30c) is inserted in the 3rd axle (13) and reduces the gradient of described interim second tapered portion, thereby form the step of the 3rd deformed shaft (30d);

(e) described the 3rd deformed shaft (30d) is inserted in the 4th axle (14) and interim second tapered portion after described gradient reduces forms the warning groove, thereby forms the step of the 4th deformed shaft (30e);

(f) described the 4th deformed shaft (30e) is inserted in the 5th axle (15) and elongates the length of described second joint portion (33), thereby form the step of the 5th deformed shaft (30f);

(g) described the 5th deformed shaft (30f) is inserted in the 6th axle (16) and forms keyway (33a), thereby form the step of the 6th deformed shaft (30g) at the inside diameter of described second joint portion (33);

(h) the 7th axle (61) is connected in front end and is formed with polygonal sizing square (62) and the compression by compressor reducer (60) and the cylinder (63) of sliding and running, make described the 7th axle to come in and go out from described sizing square (62), described the 6th deformed shaft (30g) is inserted in described the 7th axle (61), and described sizing square (62) between elongate second joint portion of described the 6th deformed shaft (30g), thereby form the step of upper shaft (30).