JP4135863B2 - Cold shear blade automatic grinding equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic grinding apparatus for grinding and shaping a caliber surface of a cold shear blade for cutting a steel bar stored in a blade caliber having a steel bar cross-sectional shape.
[0002]
[Prior art]
As shown in the schematic diagram of FIG. 1, a conventional cold shear cutting machine 1 for cutting a steel bar 4 passes the steel bar 4 conveyed by the feed roller 3 between the upper and lower blades 2 and 2 and cuts it by pressing. To do. When the steel bar 4 is continuously cut through the caliber 5 by the cold shear cutting machine 1, the caliber surface of the caliber 5 formed on the blade 2 shown in the perspective view of FIG. 2 and the partial view of FIG. 6, the caliber edge 16 on the end face of the blade 2 hangs down as shown in FIG. Therefore, the caliber surface 5 of the blade 2 is polished and shaped by a robot or human power using a grindstone grinder.
[0003]
[Problems to be solved by the invention]
Conventionally, as described above, the caliber surface of a blade is shaped using a grindstone grinder by human power and a robot. However, if the caliber surface of the blade is shaped manually, the groove depth of the blade caliber and the pain condition of the surface that contacts the steel bar of the caliber surface are not constant depending on the location. Variation due to When the caliber surface of the blade is shaped by the robot, correction due to wear of the grindstone is difficult and a step is formed on the caliber surface of the blade. For this reason, the quality of steel bar cutting deteriorates. An object of the present invention is to provide an automatic grinding apparatus that can eliminate such problems of the related art and increase the shaping accuracy of a caliber surface of a blade.
[0004]
[Means for Solving the Problems]
Means of the present invention for solving the above-mentioned problems are as follows.In a grinding apparatus for a steel bar cold shear blade that inserts and cuts a steel bar into a blade caliber, a drive wheel, a contact wheel that matches the shape of the caliber of the blade, A cold shear blade automatic grinding device comprising a grinding belt stretched between a drive wheel and a contact wheel.
[0005]
That is, in the present invention, by using an automatic grinding machine on which a grinding wheel and a contact wheel in which the grinding belt is matched to the round shape of the caliber of the blade is used, the finishing accuracy of the caliber surface of the blade is strictly controlled.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. An outline of an automatic cold shear blade grinding apparatus according to an embodiment of the present invention is shown in the schematic diagram of FIG. The cold shear blade automatic grinding apparatus is composed of a blade grinding machine 7, a charging table 8, a grinding table 9, and a carry-out table 10. The braid 2 loaded by the charging table 8 is sent to the grinding table 9 for blade grinding. The machine 7 sequentially moves and grinds the caliber surface 6 of the caliber 5 of the blade 2 on the grinding table 9, and when the grinding is finished, the finished blade 2 is sent to the carry-out table 10 and carried out.
[0007]
Here, the blade grinding machine 7 has a structure shown in FIG. The grinding machine 7 includes a drive wheel 11, a grinding belt 12, and a contact wheel 13, and the grinding belt 12 is hung on the drive wheel 11 and the contact wheel 13. The drive wheel 11 is rotated by a separately provided motor. The grinding belt 12 is rotated by the rotation of the drive wheel 11, and the contact wheel 13 is rotated by the rotation of the grinding belt 12. The contact wheel 13 presses the grinding belt 12 against the caliber surface 6 of the blade 2 by a servo motor provided separately to grind one caliber surface 6 of the blade 2. When grinding is completed, the next caliber surface 6 is ground, and in this way, all the caliber surfaces 6 are ground sequentially. The control of the grinding amount for lowering the contact wheel 13 vertically to the caliber 5 in the x direction and the control of caliber positioning for moving the caliber 5 horizontally in the y direction are performed by conventional NC control.
[0008]
Grinding is automatically ground by pressing the contact wheel 13 matched to the round shape of the cross section of the caliber 5 against the caliber surface 6 and controlling the above-mentioned vertical grinding amount and horizontal caliber positioning by NC control. The Thus, by changing the size of the contact wheel 13 to that of the radius of the caliber 5, the radius of the caliber 5 of any size can be ground by automatic grinding.
[0009]
As shown in FIG. 7, the contact wheel 13 has a structure in which hard rubber 15 is baked on a shaft steel bar 14. Since the grinding belt 12 is pressed by the hard rubber 15 of the contact wheel 13, it is accurately contacted without mechanically floating from the caliber surface 6 of the blade 2, and grinding with uniform surface roughness is performed to obtain uniform shaping. It is done.
[0010]
【The invention's effect】
As described above, by using the automatic cold shear blade grinding device of the present invention, the shaping of the caliber surface according to the shape of the radius of the cross section of the caliber of the blade and the surface texture are improved, and the steel bar by the cold shear cutting machine The cutting quality is improved.
[Brief description of the drawings]
FIG. 1 is a schematic view of a cold shear cutting machine.
FIG. 2 is a perspective view showing a blade of a cold shear cutting machine.
FIGS. 3A and 3B are schematic views showing a caliber of a blade, in which FIG. 3A is a side view of a partly cut, and FIG. 3B is a cross-sectional view thereof.
FIGS. 4A and 4B are schematic views showing a caliber of a blade with a caliber edge drooped by use, in which FIG. 4A is a side view of a partly cut, and FIG.
FIG. 5 is a schematic diagram of a blade grinding apparatus.
FIG. 6 is an explanatory diagram of the use of a blade grinding machine.
7A and 7B are diagrams showing a contact wheel, in which FIG. 7A is a front view and FIG. 7B is a side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cold shear cutting machine 2 Blade 3 Feed roller 4 Steel bar 5 Caliber 6 Caliber surface 7 Blade grinding machine 8 Loading table 9 Grinding table 10 Unloading table 11 Drive wheel 12 Grinding belt 13 Contact wheel 14 Shaft bar steel 15 Hard rubber 16 Caliber edge

Claims (1)

In a grinding apparatus for a steel bar cold shear blade that inserts and cuts a steel bar into a blade caliber, a driving wheel, a contact wheel that matches the caliber shape of the blade, and a grinding belt that spans between the driving wheel and the contact wheel An automatic cold shear blade grinding machine characterized by comprising:

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