JPS6216273Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a device for removing burrs from the end face of cut material having a complicated cross-sectional shape, such as shaped steel.

(Problems to be solved by conventional technology and ideas) Steel pipes, shaped steel, etc. that are cut with a saw cutter, etc., have an inclined cut surface or have burrs on the cut surface.
This will cause an obstruction in the next process, and there is a risk of injury to the operator handling the product, so remove the burrs from the end, create a square angle, and chamfer the top (round the corner of the end). There is a need.

Conventionally, various devices have been developed for this purpose. For example, as shown in FIG. 4, a rotary flat grindstone 2' having a rotating shaft substantially parallel to the axial center line of the cut material W' to be trimmed, and a press transfer conveyor that is perpendicular to the axial center line of the cut material W' to be trimmed. A "steel pipe end face polishing device"1' (see Japanese Patent Application Laid-open No. 103790/1983), in which cylindrical rotating brushes 3' having rotating shafts parallel to the transfer direction in 13 are brought into contact with each other in that order, As shown in the figure, it has a rotating shaft that is perpendicular to the axial center line of the cut material W'' to be trimmed and the direction in which it is transported, and is rotatable with an electric motor _M1 ' and the rotating shaft is ``Square tube deburring device''1'' (see Utility Model Application No. 52-46390), which is characterized by deburring with a cylindrical rotating brush 3'' that can be raised and lowered by an electric motor M ₂ ' with a speed reducer in both directions. It has been known.

However, in the former conventional device, the outer circumferential surface of the brush 3' is in line contact with the end surface of the cut material W' transferred by the pressure transfer conveyor 13. The brush 3' does not come into uniform contact with the entire end face of the blade, and therefore secondary burrs cannot be removed from thick or thick objects. There is a drawback that it cannot be done.

In addition, in the former case, the rotating shaft of the brush 3' is connected to the edge material to be trimmed.
Because it is parallel to the conveying direction of W' and is oriented almost perpendicular to the direction of the rotational axis of the grinding wheel 2', it is difficult to simultaneously drive or collect dust at the same time, and it is difficult to design it compactly. Moreover, the broken wires of the brush 3' flew out from the opening of the safety cover, posing a safety hazard.

In addition, in the latter of the above-mentioned conventional devices, the outer peripheral surface of the brush 3'' is in line contact with the end surface to be trimmed, so it is configured to move horizontally while raising and lowering with a separate drive. There is a disadvantage that the feed speed must be slowed down (in other words, productivity is poor). Moreover, in the latter case, the brush 3'' does not come into contact with the end surface W ₁ '' (see Fig. 5-2) corresponding to the rear part of the edge material W'' in the moving direction, and therefore It has the disadvantage that it cannot be deburred or chamfered.

In addition, as one of the conventional devices, as shown in FIG.
``Chamfering device for face plate material'' (1983-1992), in which the flat surfaces of grindstones 2 and 3 were installed in parallel rows facing downward at 45 degrees, and in this order the flat surfaces of grindstones 2 and 3 came into contact with the edge of the steel plate, which was the material to be processed. 74595)).

However, this device is for chamfering steel plates, and it is difficult to measure the squareness of shaped steel, etc., which has a complicated cross-sectional shape.
It has the disadvantage that it cannot be chamfered.

In view of the above-mentioned circumstances, the purpose of this invention is to remove burrs from the end faces of shaped steel, etc. that occur when cutting with a saw cutter, etc., remove secondary burrs that occur during deburring, and further remove burrs from the material to be ground. It is an object of the present invention to provide a device for chamfering the end faces of.

(Means for Solving the Problems) The present invention has been made to achieve the above object, and its gist is to prepare steel pipes, shaped steel, etc. that have been cut with a saw cutter or the like. In a device for removing burrs from the end face of offcuts, a device that has a diameter larger than the height of the end face of the offcuts and is rotated by a drive motor is placed in a positional relationship that makes surface contact with the offcuts perpendicular to the center line of the offcuts. A rotary flat whetstone and a brush are placed on a table that moves laterally relative to each other so that they come into contact with each other in this order, and the table is moved from the position where the grindstone starts contacting the whetstone, facing the table. It is characterized by having a gripping and fixing device that grips and fixes the cut material to be trimmed at a position facing the grindstone and the brush forward in the direction, and a positioning device for fixed cut that operates in a direction parallel to the center line of the cut material to be trimmed. It is something.

(Function) Since the present invention has the above-mentioned configuration, first, the two workpieces to be ground (shaped steel, etc.) that are being fed laterally are each gripped by the gripping and fixing devices separately, and the positioning device for fixed cut is used to separate the workpieces to be ground. After adjusting and fixing the end cutting amount (the amount by which the beveled part is cut off at a right angle), move the table on which the grindstone/brush is placed laterally, or
Alternatively, by horizontally moving the gripped and fixed workpiece, the edge of the workpiece is deburred and squared with a rotary flat grindstone rotated by a drive motor, and then A rotary flat brush rotated by a motor removes secondary burrs caused by the grinding process and chamfers the corners by rounding them. Next, after stopping the lateral moving device, the gripping and fixing device is opened, and the material to be ground is transferred to the next process by lateral feeding or the like. By repeating such operations, a large number of materials to be ground can be processed.

(Embodiment) Next, one embodiment of the device of the present invention will be described based on the drawings.

FIG. 1 is an explanatory front view of the embodiment device 1. FIG.
FIG. 2 is a plan view thereof. 2 is a rotary flat grindstone driven by a motor M ₁ , and 3 is a rotary flat brush having an axis parallel to the axis of the grindstone 2 driven by a motor M ₂ . Reference numeral 4 denotes a retchen consisting of a fixed beam 41 and a walking beam 42, which extends parallel to each plane 20 of the grindstone 2 and brush 3. Reference numeral 5 denotes a gripping and fixing device that grips the cut material W to be trimmed on the retouchen 4. As shown in the third figure, reference numeral 6 is a base with a dovetail groove, and a cross-feeding cylinder 7 fixed thereon moves the grinding wheel 2 and the grinding wheel parallel to the plane of the grinding wheel 2 (in the direction of arrow A or B). Lateral moving table 8 on which the brush 3 is placed and fixed
can be slid. Reference numeral 9 denotes a stopper for aligning the end surface of the cut material W to be trimmed, which can be raised and lowered by a stopper raising/lowering cylinder 10. In FIG. 2, reference numeral 11 denotes an end face alignment cylinder that presses the edge material W to be trimmed in its axial direction and toward the stopper 9 (in the direction of arrow C). Reference numeral 12 denotes a retraction cylinder that pushes the trimmed material W after trimming in the opposite direction (direction of arrow D). Note that E ₁ and E ₂ are positioning devices for fixed cutting, and they move the grindstone 2 or brush 3 in its axial direction (arrow D
It is a cylinder that moves forward and backward (or in the C direction).
Further, a skid (not shown) extends downwardly in the direction of arrow B at the left end in FIG. 1, and a stopper (not shown) is provided at the lower end thereof.

Next, the operation and effect of the above embodiment device 1 will be explained. The cut material W to be trimmed is stopped at a stopper at the lower end of the skid. Only one of the scraps W to be trimmed is scooped up by the rising of the walking beam 42, and is laterally fed by one pitch in the direction of arrow B by the walking beam 42, and then the walking beam 42 is lowered and placed on the fixed beam 41. It will be placed. The end face alignment stopper 9 is raised by the stopper lifting cylinder 10, and then the end face alignment cylinder 11 pushes the cut material W in the direction of arrow C in FIG. 2 to bring it into contact with the stopper 9 to align the end faces. In this case, the end surface of the cut material W to be trimmed is in a state in which it projects in the direction of arrow C by a cutting depth l from the flat surface 20 of the grindstone ₂ , which has been positioned in advance by the cylinder E1. Next, the gripping and fixing device 5
After gripping the cut material W to be trimmed, the stopper 9 is lowered by the cylinder 10.

As mentioned above, the grindstone 2 or the brush 3 is moved in advance to the cylinder E ₁ or
After fine adjustment by E ₂ , cross feed cylinder 7
It is laterally fed in the direction of arrow A together with the lateral moving table 8. By this lateral movement, the rotary flat grindstone 2 first performs end face grinding while cutting the end face of the scrap material W to be trimmed by the cutting depth l. As a result, the end face of the cut material W cut diagonally in the previous step is made perpendicular to the axis of the cut material W to be trimmed. In this way, the cutting burrs on the end face have been removed and the squareness has been achieved.
Subsequently, secondary burrs newly generated on the grindstone 2 are removed by the rotating flat brush 3, and
The end face is chamfered in an R state. When this state is reached, the lateral movement of the lateral movement table 8 is stopped, and the scrap material W to be trimmed is released from the gripping and fixing device 5. Next, the end material W to be trimmed is retreated in the direction of arrow D in FIG. 2 by the retreating cylinder 12, and then the cylinder 12 returns to its original position. Thereafter, even if the lateral moving table 8 retreats in the direction of the arrow B, it does not come into contact with the cut material W to be trimmed again and perform cutting or the like. The trimmed material W thus retreated is laterally fed in the direction of arrow B at the retouching section 4. By repeating the above steps, the ends of the trimmed material are sequentially deburred, squared, and chamfered.

(Effects) The device of the present invention is configured to use both a rotary flat grindstone and a rotary flat brush, so on the same finishing line, the rotary flat grindstone removes large burrs from the cut material to be trimmed. The squareness can be squared, and then small secondary burrs caused by grinding with a whetstone are removed using a rotary flat brush, and the finished chamfering of the edged material can be done continuously and smoothly. can. Further, when the end material to be trimmed is a pipe material, secondary deburring and chamfering can be performed on both the inner and outer surfaces.

In addition, in the device of the present invention, the planes of the grinding wheel and brush uniformly contact the entire end surface of the cut material to be trimmed, and the direction of contact changes with the axis of the grinding wheel 2 etc. as a boundary, and the grinding wheel and brush Since the rotation axes of the two wheels are parallel to each other, it is easy to drive and collect them at the same time, making it more compact, and reducing the scattering of pieces of the grindstone from the opening of the safety cover of the grindstone and brush. Even if the cut material has a complicated cross-sectional shape, a uniform finished surface can be obtained through deburring, squareness, and chamfering.
Even if the lateral moving speed of the lateral moving table is increased, or in other words, even if the cut material to be trimmed is traversed relatively quickly, the same effect can be obtained, so productivity can be increased.

The present invention is not limited to the above embodiments, but
Additional changes may be made as long as they do not go against the gist of the claims.

[Brief explanation of the drawing]

Figures 1 to 3 show a device according to an embodiment of the present invention; Figure 1 is an explanatory front view thereof, Figure 2 is a plan view thereof, and Figure 3 is a partial cross-sectional view of Figure 2. 4 to 6 are explanatory diagrams of each conventionally known device. 1: Example device, 2: Rotating flat grindstone, 3: Rotating flat brush, 4: Retsuhen, 5: Gripping fixing device, 6: Base with dovetail groove, 7: Lateral feed cylinder, 8: Lateral moving table , 9: End face alignment stopper, 1
0: Stopper lifting cylinder, 11: End face alignment cylinder, 12: Backward cylinder, E ₁ , E ₂ : Positioning position for fixed depth of cut, W: Edge material to be adjusted.

Claims (1)

[Scope of utility model registration request] In a device that removes burrs from the end face of cut steel pipes, shaped steel, etc. that have been cut with a saw cutter, etc., the trimmed material is placed in a positional relationship that makes surface contact with the cut material perpendicular to its center line. A rotary flat grindstone and a brush, which have a diameter larger than the height of the end surface of the scrap material and are rotated by a drive motor, are placed on a table that moves relatively laterally so as to come into contact with each other in this order, and are opposed to the table. and a gripping and fixing device for gripping and fixing the cut material to be trimmed at a position facing the grindstone and the brush, forward in the moving direction of the table from the contact start position of the grindstone, and a direction parallel to the center line of the cut material to be trimmed. An end face deburring device characterized in that it has a positioning device for a constant depth of cut that operates.