CN204685945U - Inclined-plane marking knife - Google Patents

Abstract

The utility model discloses a kind of inclined-plane marking knife, solve inclined-plane marking knife and cut off the bad problem of effect, its drip irrigation device is a kind of inclined-plane marking knife, comprise marking knife body, described marking knife body comprises main section and secondary section, the angle of described main section and secondary section is 45-55 degree, and the angle of described main section and vertical direction is 9-12 degree.The utility model has the advantages that the angle decreasing main section and vertical direction, stress during inclined-plane marking knife cut-out section bar is made to concentrate on secondary section, make can adopt less angle between main section and secondary section, less angle can increase marking knife body and act on pressure on section bar, makes cut-out better effects if.

Description

Inclined-plane marking knife

Technical field

The utility model relates to technical field of forging, and in particular, it relates to a kind of inclined-plane marking knife.

Background technology

In the process of forging process for fuel, in order to intercept required forging length, nearly all forging all will take this operation of thermal cut-out, and as cut out water riser, excision stub bar, blanking etc., and marking knife is generally applied to this operation of thermal cut-out.

In prior art, during marking knife thermal cut-out section bar, if the angle of marking knife is large, easily cause the thermal cut-out effect of section bar bad, cause the cross section deformation of section bar serious, crushed element needs to remove, if the angle too small of marking knife, will cause the tipping of marking knife.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is that providing a kind of increases the inclined-plane marking knife that marking knife cuts off effect.

For achieving the above object, the utility model provides following technical scheme: a kind of inclined-plane marking knife, comprise marking knife body, described marking knife body comprises main section and secondary section, the angle of described main section and secondary section is 45-55 degree, and the angle of described main section and vertical direction is 9-12 degree.

As preferably, between described main section and secondary section, be provided with fillet.

As preferably, the upper vertical of described secondary section is provided with a spigot surface.

As preferably, the length of described marking knife body is 300mm, and the height of described marking knife body is 96mm, and the width of described marking knife body is 105mm.

As preferably, the radius of described fillet is 10mm.

As preferably, the height of described spigot surface is 7.6mm.

As preferably, described marking knife body is made up of 35CrMo.

The utility model has following advantage compared to existing technology: by decreasing the angle of main section and vertical direction, stress during inclined-plane marking knife cut-out section bar is made to concentrate on secondary section, make can adopt less angle between main section and secondary section, less angle can increase marking knife body and act on pressure on section bar, makes cut-out better effects if.。

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is generalized section one of the present utility model;

Fig. 3 is generalized section two of the present utility model;

Fig. 4 is structural representation two of the present utility model.

In figure: 1, marking knife body; 11, main section; 12, secondary section; 13, fillet; 14, spigot surface; 2, marking knife counterdie.

Detailed description of the invention

With reference to accompanying drawing, the utility model is described further.

As shown in Figure 1, inclined-plane marking knife comprises marking knife body 1, marking knife body 1 comprises main section 11 and secondary section 12, angle between main section 11 and secondary section 12 adopts 45-55 degree, be preferably 50 degree, main section 11 and the angle of vertical plane are 9 to 11 spend, and be preferably 10 degree, the main section 11 of prior art is general with secondary section 12 is isosceles triangle; Main section 11 is adjusted to 10 degree with the angle of vertical plane, when 1 incision of marking knife body, marking knife body 1 acts predominantly on secondary section 12 with the cut-out power of section bar, due to angle adjustment less of main section 11 and vertical plane, when 1 incision of marking knife body, namely section bar is pressed to secondary section 12 side by marking knife body 1, marking knife body 1 is made to produce the effect cut off to a direction when cutting off section bar, avoid in prior art, marking knife in isosceles triangle is when cutting off, section bar is extruded to both sides, causes face deformation serious, affect section bar and use.Draw through overtesting, when cut-out catercorner length is the cuboid section bar of about 100mm, main section 11 is 10 degree with the angle of vertical plane, and main section 11 is 50 degree with the angle of secondary section 12, after section bar cuts off, the angle of its section and section bar vertical direction is 10-12 degree, compared with existing inclined-plane marking knife, the angle of section is less, adds man-hour in a rear step operation, without the need to processing end face defective material, save material.

It is as shown in the table, the angle of main section 11 and secondary section 12 more hour, although there is no crackle, but marking knife bears larger cut-out power, can cause disconnected sword, and main section 11 is excessive with the angle of secondary section 12, and section bar can be caused to cut off, main section 11 and vertical plane angle cross conference when causing cutting off section bar simultaneously, crack at section bar cut-off part.

As shown in Figure 1, fillet 13 is provided with between main section 11 and secondary section 12, the radius of fillet 13 is preferably 10mm, fillet 13 can prevent main section 11 from concentrating with the stress of the angle of secondary section 12, when marking knife incision, suffered stress excessively can be arrived both sides by fillet 13 gradually, prevents the tipping of marking knife body 1 simultaneously; The upper vertical of secondary section 12 is provided with a spigot surface 14, when inclined-plane marking knife cuts off section bar completely, vertical spigot surface 14 pairs of marking knife bodies 1 and counterdie play guide effect during matched moulds, the main section 11 and the secondary section 12 that are obliquely installed can shake, and spigot surface 14 serves the effect that limit to marking knife body 1 shakes in counterdie.

As shown in Figure 2, the height of marking knife body 1 is preferably 96mm, and the width of marking knife body 1 is preferably 105mm; As shown in Figure 3, the length of marking knife body 1 is preferably 300mm; Simultaneously in order to strengthen the bending resistance of marking knife body 1, marking knife body 1 adopts structural alloy steel to make, and is preferably 35CrMo structural alloy steel.

As shown in Figure 4, inclined-plane marking knife also comprises the marking knife counterdie 2 matched with marking knife body 1, when inclined-plane marking knife uses, needs the part cut off to be placed on marking knife counterdie 2 section bar, then marking knife body 1 moves down, and with coordinating of marking knife counterdie 2, section bar is cut off by marking knife body 1.

The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (7)

1. an inclined-plane marking knife, comprises marking knife body, and described marking knife body comprises main section and secondary section, it is characterized in that: the angle of described main section and secondary section is 45-55 degree, and the angle of described main section and vertical direction is 9-12 degree.

2. inclined-plane according to claim 1 marking knife, is characterized in that: be provided with fillet between described main section and secondary section.

3. inclined-plane according to claim 1 marking knife, is characterized in that: the upper vertical of described secondary section is provided with a spigot surface.

4. inclined-plane according to claim 1 marking knife, is characterized in that: the length of described marking knife body is 300mm, and the height of described marking knife body is 96mm, and the width of described marking knife body is 105mm.

5. inclined-plane according to claim 2 marking knife, is characterized in that: the radius of described fillet is 10mm.

6. inclined-plane according to claim 3 marking knife, is characterized in that: the height of described spigot surface is 7.6mm.

7. the inclined-plane marking knife according to any one of claim 1-6, is characterized in that: described marking knife body is made up of 35CrMo.