How to make auger spiral noodles Please ask

Screw conveyor auger blade blanking and forming processing The auger is the spiral shaft with blades in the screw conveyor. There are many methods for blanking and forming auger blades. Based on relevant data and practical experience, the author summarizes two simple methods.

These methods do not require special equipment and are suitable for maintenance and single-piece, small-batch production. 1.Drawing method Fig. 1 is the schematic diagram of auger, the outer diameter d, shaft diameter d and pitch s of the cylindrical helical plane are known, and the drawing method is as follows:

1) Find the lengths l1 and l2 of the inner and outer spirals as shown in Figure 2. (2) Make the horizontal line A1B1 as shown in Figure 3, so that A1B1=L2 2. Pass a1 as the perpendicular line a1c1 of a1b1 so that a1c1 = (d-d) 2.

Pass C1 as the horizontal line C1D1 so that C1D1 = L1 2. Cross the two points of B1 and D1 as a straight line and intersect the extension line of A1C1 at point O. Draw concentric circles with O as the center of the circle, OA1 and OC1 as the radius, that is, the blanking diagram of the blade.

2.Calculation method (1) Formula derivation In Figure 1, the length of the inner helix of a pitch blade is equal to . Fig. 4 shows the blanking diagram of the auger blade, and the circumference of its inner hole d1 is d1.

d1=d1+d-d (2) According to equations (1) and (2), the blanking size of auger blades can be calculated. (2) For example, the outer diameter of the auger d=200mm, the shaft diameter d=57mm, the pitch s=150mm, and the thickness of the blade δ=3mm, and the cutting size of the auger blade is obtained. The value of d1 can be found from equation (1).

The value of d1 can be found from equation (2), d1=d1+d-d=. According to the calculated D1 and D1 dimensions, the material can be discharged. 3.

Forming and processing of blades The author summarizes the forming method of hand block according to production practice. This method only requires a chain hoist and some simple clamps. The blade forming device is shown in Figure 5, the mandrel 6, the fixed fixture 1 are welded with the chassis 5, the chassis and the side beam are fixed with bolts, and the clamping screw needs to be installed on the fixed fixture 1 and the tensile fixture 3, so as to be convenient for fixing the blade, so that the blade does not swing and does not slip in the forming process.

The diameter of the mandrel is smaller than the diameter of the auger, and the elongated pitch of the blade is larger than the required pitch, and the specific size is related to the thickness of the plate, the outer diameter of the blade, the inner diameter and the material. During operation, several blades are disconnected as shown in Figure 4, and adjacent blades are welded together along the incision, and are sleeved on the mandrel 6, so that the blade two ends are fixed with the fixed fixture 1 and the tensile fixture 3, and finally pull the hand block 4, and the blade should be struck with a hammer in the forming process, and the blade is forced to form, and the rebound is reduced. This method is easy and convenient.

Fig. 1 Fig. 2 Fig. 3 Fig. 4 1Fixing Fixture 2Bracket 3

Stretch Fixture 4Chain block 5Chassis 6

Mandrel Figure 5

If it is a direct stretching method, the inner diameter of the circle should be 145mm (I didn't calculate carefully), and add half a plate thickness, then take 148-150mm.

What Master Hu shows must be the correct interpretation of the information, but it is difficult to understand without a diagram. Please ask for the source of the information and whether you can share it.

An auger on a screw conveyor? 1.The purpose of using sheet metal painting is to make drawings, but after the auger, it is a long strip of steel, so there is no need to use sheet metal painting (in fact, I don't use sheet metal painting) 2Modeling is much simpler with a solid body.

Formula: d = outer diameter (large diameter of the disc), d = inner diameter (outer diameter of the steel pipe), pitch p ((square + p squared) re-square = l1 (square + p squared) re-square = l2

Blanking outer diameter = L1 * (D-D) (L1-L2), blanking inner diameter = outer diameter - 320 (blade width * 2), blanking inner diameter is slightly smaller than the calculated size, and then multiple discs are stacked together, aligned spot welding, processing the inner hole with a lathe, processed to a diameter 1-2 mm larger than the steel pipe, which will facilitate the assembly, theoretical blanking size: 850 * 530.

Advantages of cold roll forming.

It has the advantages of high production efficiency, saving raw materials, blades, high hardness, and good wear resistance.

The factors that affect the rolling forming include the material and thickness of the strip, the offset size of the roll, the feeding height, the rolling pressure of the roll, the different specifications of the guide wheel and the blade, and the increase in the temperature of the roll during the rolling process. After years of unremitting efforts, this continuous cold-rolled spiral blade has been developed, which has the advantages of smooth surface, high hardness, wear resistance, one-time forming, and continuous no welds.

The factors that affect the rolling forming include the material and thickness of the strip, the offset size of the roll, the feeding height, the rolling pressure of the roll, the different specifications of the guide wheel and the blade, and the increase in the temperature of the roll during the rolling process.

This kind of continuous cold-rolled spiral blade has been developed, which has the advantages of smooth surface, high hardness, wear resistance, one-time forming, and continuous no weld.

The methods of manufacturing blades in China are: single-piece stamping and welding forming, extrusion forming, winding forming, cold rolling forming and other methods.

The triangular method, the cone method, and the calculation method are used, but they are all approximations. It took me 40 minutes to write this formula, I hope it helps!

To add that, where d is the outer diameter of the circle, d is the diameter of the inner circle, and p is the height of the blade, these three values are known.

This is also a spiral piece.

Its stakeout can be done with software.

The CAD input parameters of the steel structure can automatically produce the overall drawing.

1.Practical application of production methods [refer to **Blade forming process].

After the blade is made according to the size of the drawing, there is no need to cut the corner mouth, cut a seam, pry up the blades to weld and connect them, one end is fixed and welded on the spiral shaft, and the other end is drawn with two inverted chains as shown in the figure, the blade is directly welded on the spiral shaft after drawing, and the last piece of spiral blade has no application value due to the large deformation. Because there is no need to cut the corner opening, save materials, increase the area of the cutting corner part of each piece, and the weld is not in a straight line, avoid the stress concentration, improve the stress environment, this method does not need thermal processing treatment, save costs, is suitable for single-piece processing and production, and the spiral blade fully meets the use requirements in field use.

2.Common formula method: the formula used to calculate the blanking size of the spiral blade is simple, but there are problems such as the calculated inner diameter of the blank is small, the size deviation is large, and the process material is more, and they are suitable for a small number or on-site filling of the spiral blade.

Triangle method, etc.: Although the formula is a little complicated, it can accurately calculate the size of the blank blank and can be pressed into shape according to this.

3.Accurate calculation method: The formula used to calculate the blanking size of the spiral blade is complex, although the blanking size of the spiral blade can be accurately calculated, but it is too complicated.

In addition, the K value of the correction coefficient proposed in this method needs to be obtained from a large number of experiments, and different materials have different k values, which is troublesome.

There are many methods for cutting spiral blades, and all kinds of methods have their characteristics and advantages, but the triangle method is generally the main one. It is worth noting that blanking is only the first step in the processing and forming of spiral blades, in order to improve the forming quality of the blade, it is necessary to do in-depth research on the selection of forming process, the design of molds, and the control of material rebound.

When the iron plate is blanked, it can be punched out of the mold, of course, it is simple to use gas cutting.

If the outer diameter of the spiral is d and the pitch is p, then the blanking iron plate is a ring, and the outer diameter is d, then the relationship between the three numbers conforms to the Pythagorean theorem, that is, a right-angled triangle, one of the right-angled sides is p, the other right-angled edge is, and the hypotenuse is.

The inner diameter of the spiral is also obtained in the same way.

After blanking, the ring is cut along the radial direction, and then the ring can be pulled and pressed into a spiral. This process is best to have tooling, and the 14mm iron plate must be pressed with a punch.

Forming diameter d. Shaft diameter d, lead p, circumference l1 (outer circle), circumference l2 (inner circle).

Blade width h=(d-d) 2.

l1 = re-opening.

l2 = ((d) squared + p squared)) re-squared.

Open ring (ring fan) inner diameter = [(diameter of shaft) diameter of shaft ) spiral distance spiral distance].

Open ring (ring fan) outer diameter = open ring inner diameter + (formed diameter - shaft diameter).

The outer arc length of the open ring (annular fan) = [(diameter of molding) diameter of molding) spiral distance spiral distance].

Hello! According to the method of making "Engage Dragon".

Main data: diameter of the molding, diameter of the shaft, spiral distance.

The material that is opened is round.

The opening ring of the cutout.

Open ring (ring fan) inner diameter = [(diameter of shaft) diameter of shaft ) spiral distance spiral distance].

The outer diameter of the open ring (ring fan) = the inner diameter of the open ring + (the diameter of the forming - the diameter of the shaft) the outer arc length of the open ring (the ring fan) = [(the diameter of the molding) the diameter of the molding) the spiral distance The spiral distance].

I beg your pardon, I may not have written well. What is there please come to the news.

Blade outer diameter 1500, shaft diameter 355, lead 500