CN201565761U

CN201565761U - Press-mounting die of motorcycle crankshaft

Info

Publication number: CN201565761U
Application number: CN2009202938088U
Authority: CN
Inventors: 王安庆; 蒋瑞元
Original assignee: CHONGQING MEIXIN CRANKSHAFT MANUFACTURING Co Ltd
Current assignee: CHONGQING MEIXIN YINGSHEN MACHINERY CO., LTD.
Priority date: 2009-12-15
Filing date: 2009-12-15
Publication date: 2010-09-01
Anticipated expiration: 2019-12-15

Abstract

The utility model relates to a press-mounting die of a motorcycle crankshaft, comprising an upper die plate, a lower die plate, a guide post, a guide sleeve, an upper backing board, a lower backing board, an upper mounting board and a lower mounting board, wherein the upper and the lower mounting boards are provided with projecting location posts and crankshaft locating holes. When the press-mounting die is used for press-mounting the crankshaft, parts can be located quite precisely, thereby reliably ensuring quality of the crankshaft after being press-mounted, and increasing pass rate of the parts. The parts of the press-mounting die have good interchangeability, thereby reducing replacement cost of the die.

Description

Motorcycle bent axle press mounting die

Technical field

The utility model relates to a kind of mould, is fitted in the motorcycle bent axle press mounting die in the bent neck hole of crank especially for the bent neck with the motorcycle bent axle.

Background technology

The motorcycle bent axle is made up of main shaft 18, crank 19 and bent neck 20, as shown in figure 10, main shaft 18 is fixedly connected on crank 19, position, crank 19 termination offers bent neck hole 21, bent neck 20 two ends lay respectively in the bent neck hole 21 of two cranks 19 and bent neck hole interference fit, thereby two cranks 19 are combined as a whole.

In the production process of motorcycle bent axle, bent neck 20 is to be fitted in the bent neck hole 21 of crank 19 by press mounting die, and existing bent axle press mounting die is when press-fiting bent neck 20, the location of part is unreliable, thereby the quality that makes the bent axle after press-fiting can not get guaranteeing, the qualification rate of part is lower, and the interchangeability of parts is poor in the press mounting die.

The utility model content

The purpose of this utility model provides a kind of motorcycle bent axle press mounting die, makes the quality that press-fits the back bent axle can access reliable assurance, to improve the qualification rate of part.

Motorcycle bent axle press mounting die described in the utility model, comprise cope match-plate pattern, lower bolster, guide pillars and bushes, also comprise upper mounting plate, upper padding plate and lower installation board, lower bolster, upper mounting plate and upper padding plate are by pin and be bolted to the cope match-plate pattern lower surface, combine as a whole with cope match-plate pattern, and upper padding plate is between cope match-plate pattern and upper mounting plate; Lower installation board and lower bolster are by pin and be bolted to the lower bolster upper surface, combine as a whole with lower bolster, and lower bolster are between lower bolster and lower installation board.

On upper mounting plate and lower installation board, offer reference column hole and bent axle locating hole, the bent axle locating hole can cooperate with the gap of main reinforcement that is press-fited bent axle, the distance between bent axle locating hole axial line and the reference column hole axial line and to be press-fited the spindle axis line and the distance between the bent neck axial line of bent axle consistent.

On upper padding plate and lower bolster, offer bent axle via hole and stepped hole, the axial line of bent axle via hole and described bent axle locating hole axial line are located along the same line, the axial line of stepped hole and described reference column hole axial line are located along the same line, in stepped hole, be provided with bolt, in the reference column hole, be provided with reference column, reference column cooperates with the reference column interporal lacuna, and also can cooperate with the bent neck interporal lacuna that is press-fited bent axle, be set with the compression spring on the bolt, the one end acts on the backing plate, the other end acts on the reference column, and when free state, reference column protrudes from the lower surface of upper mounting plate and the upper surface of lower installation board under the compression spring action.

Offer the bent axle through hole on cope match-plate pattern and lower bolster, this bent axle through hole is vertical corresponding with described bent axle via hole, after the assembling of this press mounting die finishes, is opened in reference column hole and all vertical correspondence of bent axle locating hole on upper mounting plate and the lower installation board.

When press-fiting bent axle, wherein main shaft with bent axle is placed on the counterdie together with crank earlier, main shaft is positioned in the bent axle locating hole of lower installation board (this main shaft also is arranged in the bent axle via hole of lower bolster and the bent axle through hole of lower bolster simultaneously), the bent neck borehole jack of crank end is contained on the reference column of lower installation board, afterwards, another main shaft with bent axle is placed on the patrix together with crank again, main shaft is positioned in the bent axle locating hole of upper mounting plate (this main shaft also is arranged in the bent axle via hole of upper padding plate and the bent axle through hole of cope match-plate pattern simultaneously), and the bent neck borehole jack of crank end is contained on the reference column of upper mounting plate; Bent neck one end vertically is positioned over the place, bent neck hole site of the crank on the counterdie, matched moulds moves down patrix then, the bent neck hole that is positioned over the crank on the patrix will contact with the bent neck other end, and in the process that patrix continues to move down, bent neck will be fitted in the bent neck hole of two cranks; Open mould afterwards, after treating to move on the patrix bent axle is taken out from mould, promptly finish press-fiting of bent neck.

Bent axle press mounting die described in the utility model is when press-fiting bent axle, adopt the main shaft of bent axle and the bent neck hole of crank to position, because this kind location is very accurate, thereby the quality after bent axle is press-fited can access reliable assurance, has improved the qualification rate of part.Because upper mounting plate is identical with the lower bolster structure with lower installation board, upper padding plate and lower bolster and cope match-plate pattern in this press mounting die, only need fall a face is interchangeable use, so the interchangeability of parts is good in this press mounting die, has reduced the die change cost.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 looks schematic diagram for the master of motorcycle bent axle press mounting die described in the utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the cutaway view of A-A line among Fig. 1;

Fig. 4 is upper mounting plate and the view of lower installation board on the end face direction;

Fig. 5 is the cutaway view of B-B line among Fig. 4;

Fig. 6 is upper padding plate and the view of lower bolster on the end face direction;

Fig. 7 is the cutaway view of C-C line among Fig. 6;

Fig. 8 is the front view of reference column;

Fig. 9 is the vertical view of Fig. 8;

Figure 10 is the structural representation of motorcycle bent axle.

The specific embodiment

To shown in Figure 10, this motorcycle bent axle press mounting die comprises cope match-plate pattern 1, lower bolster 11, four guide pillars 12 and guide pin bushings 13 as Fig. 1, and guide pin bushing 13 is fixed on the cope match-plate pattern 1, and guide pillar 12 is fixed on the lower bolster 11, and guide pillar 12 is arranged in guide pin bushing 13 and is slidingly matched with guide pin bushing 13.

This bent axle press mounting die also comprises upper mounting plate 2, upper padding plate 3 and lower installation board 10, lower bolster 7, upper mounting plate 2 and upper padding plate 3 are fixed on cope match-plate pattern 1 lower surface by two pins 4 and four bolts 5, combine as a whole with cope match-plate pattern 1, and upper padding plate 3 is between cope match-plate pattern 1 and upper mounting plate 2.Lower installation board 10 and lower bolster 7 are fixed on lower bolster 11 upper surfaces by two pins 4 and four bolts 5, combine as a whole with lower bolster 11, and lower bolster 7 are between lower bolster 11 and lower installation board 10.

On upper mounting plate 2 and lower installation board 10, offer reference column hole 15 and bent axle locating hole 14, bent axle locating hole 14 can with main shaft 18 matched in clearance that press-fited bent axle, the distance between bent axle locating hole 14 axial lines and reference column hole 15 axial lines and to be press-fited main shaft 18 axial lines and the distance between bent neck 20 axial lines of bent axle consistent.

On upper padding plate 3 and lower bolster 7, offer bent axle via hole 16 and stepped hole 17, the axial line of bent axle via hole 16 and described bent axle locating hole 14 axial lines are located along the same line, the axial line of stepped hole 17 and described reference column hole 15 axial lines are located along the same line, in stepped hole 17, be provided with bolt 8, in reference column hole 15, be provided with reference column 6, reference column 6 and reference column hole 15 matched in clearance, and also can with bent neck hole 21 matched in clearance that press-fited bent axle, be set with compression spring 9 on the bolt 8, the one end acts on (on upper padding plate 3 or the lower bolster 7) on the backing plate, the other end acts on the reference column 6, when free state, reference column 6 protrudes from the lower surface of upper mounting plate 2 and the upper surface of lower installation board 10 under 9 effects of compression spring.

On cope match-plate pattern 1 and lower bolster 11, offer bent axle through hole 22, this bent axle through hole 22 is vertical corresponding with described bent axle via hole 16, after the assembling of this press mounting die finishes, be opened in reference column hole 15 and all vertical correspondence of bent axle locating hole 14 on upper mounting plate 2 and the lower installation board 10.

Claims

1. motorcycle bent axle press mounting die, comprise cope match-plate pattern (1), lower bolster (11), guide pillar (12) and guide pin bushing (13), it is characterized in that: also comprise upper mounting plate (2), upper padding plate (3) and lower installation board (10), lower bolster (7), upper mounting plate and upper padding plate are fixed on the cope match-plate pattern lower surface by pin (4) and bolt (5), combine as a whole with cope match-plate pattern, and upper padding plate is between cope match-plate pattern and upper mounting plate; Lower installation board and lower bolster are fixed on the lower bolster upper surface by pin (4) and bolt (5), combine as a whole with lower bolster, and lower bolster are between lower bolster and lower installation board;

On upper mounting plate and lower installation board, offer reference column hole (15) and bent axle locating hole (14), the bent axle locating hole can with the main shaft that is press-fited bent axle (18) matched in clearance, distance between bent axle locating hole axial line and the reference column hole axial line, with between spindle axis line that is press-fited bent axle and bent neck (20) axial line the distance consistent;

On upper padding plate and lower bolster, offer bent axle via hole (16) and stepped hole (17), the axial line of bent axle via hole and described bent axle locating hole axial line are located along the same line, the axial line of stepped hole and described reference column hole axial line are located along the same line, in stepped hole, be provided with bolt (8), in the reference column hole, be provided with reference column (6), reference column cooperates with the reference column interporal lacuna, and also can with bent neck hole (21) matched in clearance that is press-fited bent axle, be set with compression spring (9) on the bolt, the one end acts on the backing plate, the other end acts on the reference column, when free state, reference column protrudes from the lower surface of upper mounting plate and the upper surface of lower installation board under the compression spring action;

Offer bent axle through hole (22) on cope match-plate pattern and lower bolster, this bent axle through hole is vertical corresponding with described bent axle via hole, after the assembling of this press mounting die finishes, is opened in reference column hole and all vertical correspondence of bent axle locating hole on upper mounting plate and the lower installation board.