CN201875098U

CN201875098U - Roll forming steel belt pulley

Info

Publication number: CN201875098U
Application number: CN2010206450803U
Authority: CN
Inventors: 王枝俏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2011-06-22
Anticipated expiration: 2020-12-06

Abstract

The utility model provides a roll forming steel belt pulley, which comprises a connecting flange, mounting holes, a connecting shaft shoulder, a band groove and a tail shaft shoulder, wherein the mounting holes are uniformly arranged on the connecting flange; the band groove is arranged between the connecting shaft shoulder and the tail shaft shoulder; and the wall thicknesses of the connecting flange, the connecting shaft shoulder, the band groove and the tail shaft shoulder are all 1.5mm to 3.0mm. The processing method of the roll forming steel belt pulley comprises steps of the blanking, the edge folding, the punching and deep drawing of a steel plate as well as the rolling of the band groove. When the produced belt pulley is installed on a machine in practice for use and test, the strength can meet the use requirement, while the weight is only 1/3 to 1/6 of the weight of a cast belt pulley; the comprehensive cost is reduced by 30% to 60%; a production cycle not requires 2 minutes, while the production cycle of the cast belt pulley is generally more than 3 days; the product performances are reliable, and the production efficiency is high; moreover, the roll forming steel belt pulley has low cost, meets the requirements on energy conservation and cost reduction, and has obvious competitive advantages.

Description

A kind of steel belt wheel of roll forming

Technical field

The utility model relates to the drive pulley in the machine driven system, relates in particular to the drive pulley on the diesel engine.

Background technique

All can't do without transmission system in all kinds of machineries, belt wheel then is a most basic part in the transmission system.For example, the power output pulley that is installed in the flywheel outside is arranged on single cylinder diesel, be installed in the condenser belt wheel or the generator belt wheel of flywheel inboard, also have Idle wheel.At present, these drive pulleys are generally ironcasting or aluminum casting, because the strength ratio iron and steel of cast iron is much lower, therefore have enough requirement of strength in order to ensure belt wheel, normally realize by the method that increases wall thickness, so not only weight is big, consumptive material is many, and cost is higher, in order further to reduce manufacture cost, alleviate the complete machine weight of diesel engine, the claimant has designed a kind of belt wheel that utilizes the compacting of steel sheet material, and this belt wheel wall thickness is basic identical, the high heavy and light of intensity, cost is low, and is with short production cycle.

The model utility content

The purpose of this utility model provides a kind of steel belt wheel of roll forming.

The steel belt wheel of described roll forming, comprise adpting flange, mounting hole, the connection shaft shoulder, trough of belt and the afterbody shaft shoulder, mounting hole is arranged on the adpting flange equably, trough of belt is connecting between the shaft shoulder and the afterbody shaft shoulder, and the wall thickness of adpting flange, the connection shaft shoulder, trough of belt and the afterbody shaft shoulder is 1.5～3.0 millimeters.

The processing method of the steel belt wheel of described roll forming is as follows:

The first step, blanking carries out blanking by the developed area of belt wheel;

Second step, carry out flanging, punching, pull and stretch processing with flanging punching drawing composite die, must treat the roll extrusion pulley blanks, obtain adpting flange by flanging, on flange, go out mounting hole by punching, get the transition shaft shoulder by pull and stretch;

In the 3rd step, the roll extrusion trough of belt carries out roll extrusion with the trough of belt rolling forging die to the transition shaft shoulder, forms to connect the shaft shoulder, trough of belt and the afterbody shaft shoulder.

Comprise the moulding plug at trough of belt rolling forging die described in the 3rd step, circumferential locating stud, trough of belt milled head and thimble, the moulding plug is a ledge structure, its left end is provided with and the corresponding flange step of adpting flange, trough of belt chamber and shaft shoulder mandrel, circumferential locating stud is housed on the flange step, center, right side at shaft shoulder mandrel is provided with center hole, treat that the roll extrusion pulley blanks is sleeved on the shaft shoulder mandrel of moulding plug, adpting flange contacts with the flange step, circumferentially set pin sleeve is contained in the mounting hole on the adpting flange, thimble withstands the center hole on shaft shoulder mandrel right side, the trough of belt milled head is in the trough of belt chamber that axially aligns on the moulding plug, during roll extrusion, the motion that rotates in a circumferential direction of moulding plug, treat the rotation thereupon under the drive of circumferential locating stud of roll extrusion pulley blanks, the trough of belt milled head moves radially, and by the roll extrusion mode transition shaft shoulder is formed and connects the shaft shoulder, the trough of belt and the afterbody shaft shoulder.

The claimant has carried out rolling finishing at engine lathe, the flange step is clamped on the three melon chucks, thimble is contained on the tailstock, the trough of belt milled head is installed on the middle carriage, during roll extrusion, to treat that the roll extrusion pulley blanks is sleeved on the shaft shoulder mandrel of moulding plug, adpting flange contacts with the flange step, circumferentially set pin sleeve is contained in the mounting hole on the adpting flange, movable tail frame makes thimble withstand the center hole on shaft shoulder mandrel right side, regulates middle carriage and makes the trough of belt milled head in the trough of belt chamber that axially aligns on the moulding plug, start lathe, make the motion that rotates in a circumferential direction of moulding plug, treat that the roll extrusion pulley blanks rotates thereupon under the drive of circumferential locating stud, middle carriage is moved radially, the trough of belt milled head moves radially, and by the roll extrusion mode transition shaft shoulder is formed and connects the shaft shoulder, the trough of belt and the afterbody shaft shoulder.

The gained belt wheel is through the reality use test of installing, the steel belt wheel intensity of roll forming can satisfy usage requirement, and weight only is 1/3～1/6 of foundry goods belt wheel weight, and overall cost descends 30%～60%, as long as manufacture cycle is 2 minutes, and the manufacture cycle of foundry goods belt wheel generally more than 3 days, this shows that not only product performance are reliable for the steel belt wheel of roll forming, and manufacturing efficiency height, with low cost, meet the diesel engine loss of weight and fall this requirement, competitive advantage is remarkable.

Description of drawings

Fig. 1 is a kind of structural representation of foundry goods belt wheel;

Fig. 2 is the structural representation of steel belt wheel that substitutes the roll forming of belt wheel shown in Figure 1;

Fig. 3 is the structural representation for the treatment of the roll extrusion pulley blanks behind flanging, punching, the pull and stretch;

Fig. 4 is the processing schematic representation of the trapezoidal trough of belt of roll extrusion;

Among the figure: the 1-adpting flange; The 2-mounting hole; 3-connects the shaft shoulder; The 4-trough of belt; The 5-afterbody shaft shoulder; The 6-transition shaft shoulder; 71-moulding plug; The circumferential locating stud of 72-; 73-trough of belt milled head; The 74-thimble; 711-flange step; 712-trough of belt chamber; 713-shaft shoulder mandrel; The 714-center hole.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model:

Fig. 1 is the structural representation of a kind of vee-pulley on the existing diesel, Fig. 2 is the alternative belt wheel that becomes through punching press, pull and stretch, rolling finishing with steel plate, the wall ratio of this belt wheel is more even, all the thickness with steel plate is suitable, the steel belt wheel of described roll forming, comprise adpting flange 1, mounting hole 2, connect the shaft shoulder 3, trough of belt 4 and the afterbody shaft shoulder 5, mounting hole 2 is arranged on the adpting flange 1 equably, trough of belt 4 is connecting between the shaft shoulder 3 and the afterbody shaft shoulder 5, and the wall thickness of adpting flange 1, the connection shaft shoulder 3, trough of belt 4 and the afterbody shaft shoulder 5 is 2.0 millimeters～1.9 millimeters.

The processing method of the steel belt wheel of roll forming shown in Figure 2 is as follows:

Second step, carry out flanging, punching, pull and stretch processing with flanging punching drawing composite die, must treat the roll extrusion pulley blanks, obtain adpting flange 1 by flanging, on flange, go out mounting hole 2 by punching, get the transition shaft shoulder 6 by pull and stretch;

In the 3rd step, the roll extrusion trough of belt carries out roll extrusion with the trough of belt rolling forging die to the transition shaft shoulder 6, forms to connect the shaft shoulder 3, trough of belt 4 and the afterbody shaft shoulder 5.

In the 3rd step, described trough of belt rolling forging die comprises moulding plug 71, circumferential locating stud 72, trough of belt milled head 73 and thimble 74, moulding plug 71 is a ledge structure, its left end is provided with and adpting flange 1 corresponding flange step 711, trough of belt chamber 712 and shaft shoulder mandrel 713, circumferential locating stud 72 is housed on flange step 711, center, right side at shaft shoulder mandrel 713 is provided with center hole 714, treat that the roll extrusion pulley blanks is sleeved on the shaft shoulder mandrel 713 of moulding plug 71, adpting flange 1 contacts with flange step 711, circumferentially locating stud 72 is sleeved in the mounting hole 2 on the adpting flange 1, thimble 74 withstands the center hole 714 on shaft shoulder mandrel 713 right sides, trough of belt milled head 73 is in the trough of belt chamber 712 that axially aligns on the moulding plug 71, carried out rolling finishing at engine lathe, flange step 711 is clamped on the three melon chucks, thimble 74 is contained on the tailstock, trough of belt milled head 73 is installed on the middle carriage, during roll extrusion, to treat that the roll extrusion pulley blanks is sleeved on the shaft shoulder mandrel 713 of moulding plug 71, adpting flange 1 contacts with flange step 711, circumferentially locating stud 72 is sleeved in the mounting hole 2 on the adpting flange 1, movable tail frame, make thimble 74 withstand the center hole 714 on shaft shoulder mandrel 713 right sides, regulating middle carriage makes trough of belt milled head 73 in the trough of belt chamber 712 that axially aligns on the moulding plug 71, start lathe, make moulding plug 71 motion that rotates in a circumferential direction, treat the rotation thereupon under the drive of circumferential locating stud 72 of roll extrusion pulley blanks, middle carriage is moved radially, trough of belt milled head 73 moves radially, and by the roll extrusion mode transition shaft shoulder 6 is formed and connects the shaft shoulder 3, the trough of belt 4 and the afterbody shaft shoulder 5.

Though the utility model has only illustrated a kind of extensional mode flange belt pulley and processing method thereof, belt wheel for the interconnected flange can adopt identical processing method to process, as long as with corresponding pull and stretch punching die and roll die, for the multiple-grooved belt wheel, can adopt steel sheet material to carry out the moulding process of punching press, pull and stretch, roll extrusion equally.Process equipment both can be used machined into, also can adopt special-purpose knurling machine to process.

Claims

1. the steel belt wheel of a roll forming, it is characterized in that: it comprises adpting flange (1), mounting hole (2), connects the shaft shoulder (3), trough of belt (4) and the afterbody shaft shoulder (5), mounting hole (2) is arranged on the adpting flange (1) equably, trough of belt (4) is positioned at and connects between the shaft shoulder (3) and the afterbody shaft shoulder (5), and the wall thickness of adpting flange (1), the connection shaft shoulder (3), trough of belt (4) and the afterbody shaft shoulder (5) is 1.5～3.0 millimeters.