JPS5811472Y2 - bite clamp device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to (1) a flash trimmer bite clamp device for cutting and removing excess thickness of an IJ joint weld joint;

The flash trimmer is provided with an upper bit and a lower bit, and the upper and lower bits are used to cut and remove the excess thickness of the welded joint by pinching the strip from above and below.

The upper and lower bits are held down by a bit clamping device designed to allow easy and quick replacement, and to prevent the bits from loosening during work.

To explain a conventional bite clamp device with reference to FIGS. 1 and 2, a cylindrical bite frame b is attached to a suitable frame a, and a groove-shaped hole C is formed in the upper part of the bite frame b. A protruding edge d is provided on both sides of the hole C.

The edge d is provided with a notch e that is inclined with respect to the vertical line, and a cutting tool stand g that supports the lower part of the pie f is attached to the bottom surface of the hole C of the cutting tool frame b.

Pi) f is inserted into the hole C, its front side is supported by the notch e of the edge d, the lower part is supported by the tool stand g, and the rear inclined part is inserted into the hole C. It is held down by the front slope.

A bolt i is attached to the tool clamp fitting and the tool frame b, and the thread of the bolt i is a reverse thread at the portion between the tool clamp fitting and the tool frame b.

When holding and clamping the tool f with the tool clamp fitting, insert a wrench etc. into the hexagonal hole at the top of the bolt i, rotate the bolt i in the direction that pushes the tool clamp fitting downward, and replace the tool f. If you do,
Rotate bolt i in the opposite direction to loosen the bite clamp fitting.

However, the above-mentioned tool clamp device has a problem in that foreign matter such as chips and dirt gets into the threaded portion of the bolt i and the gap j, and as a result, the bolt i stops rotating, making it difficult to replace the tool f.

The present invention was made with the aim of eliminating the above-mentioned drawbacks of the conventional means.The bolt for attaching the tool clamp to the tool frame is inserted into the tool clamp fitting that presses the inclined rear surface of the tool, and the bolt head A lid for suppressing the bolt is installed between the tool frame and the surface of the tool clamp fitting, and a ring for removing foreign matter is installed in the gap formed between the tool frame and the tool clamp fitting so as to surround the outer periphery of the bolt. That is.

Embodiments of the present invention will be described below with reference to the drawings.

A bite frame 2 is engaged and fixed to a frame 1 having an acute angle at the upper part, a hole 3 having a U-shaped planar shape is provided in the upper part of the bite frame 2, and edges 4 are provided protruding on both sides of the hole 3. death,
A notch 6 inclined with respect to the vertical line is provided in the edge 4 so as to support the front surface of the cutting tool 5, and a cutting tool stand 7 for supporting the lower part of the cutting tool 5 is removably attached to the bottom surface of the hole 3 of the cutting tool frame 2. , fit the tool clamp fitting 8 into the rear surface of the cutting tool 5 in the U-shaped hole 3, make a hole 10 for inserting the bolt 9 in the tool clamp fitting 8, and insert the hole 1 into the hole 1.
0, so that the bolt 9 can be screwed into the female threaded part 17 of the tool frame 2, and the head of the bolt 9 is buried in the hole 11 provided above the hole 10 of the metal fitting 8 of the tool clamp. Screw the lid 12 with a hollow part on top, insert the spring washer 18 between the bottom surface of the head of the bolt 9 and the bottom surface of the hole 11 of the bite clamp fitting 8, and tighten the head of the bolt 9 against the lid 12. A ring-shaped groove 14.15 is provided in the bite frame 2 and the bite clamp fitting 8 concentrically with the bolt 9, and a rubber ring 16 is attached to the groove 14.15 so as to surround the outer periphery of the bolt 9. , it is possible to prevent foreign matter such as chips and dirt from entering the gap between the cutting tool clamp fitting 8 and the cutting tool frame 2.

When removing the cutting tool 5, a wrench is inserted into the hexagonal hole of the bolt 9 from the hollow part of the lid 12 and the bolt 9 is rotated.

Then, the bolt 9 tries to come out of the hole 10, but it cannot come out because of the cover 12, and the head of the bolt 9 pushes up the cover 12, so the bite clamp fitting 8
The front inclined part of the cutting tool clamp fitting 8 is separated from the rear inclined part of the cutting tool 5, and the cutting tool 5 can be removed from the cutting tool frame 2.

When fixing the cutting tool 5, fit the cutting tool 5 into the notch 6 of the cutting tool frame 2, fit the cutting tool clamp fitting 8 into the rear surface of the cutting tool in the U-shaped hole 3, and insert the bolt 9 into the hole. 10, and is fitted into the female threaded portion 17 and rotated.

Then, the bolt 9 is screwed into the female threaded part 17, and the front side of the tool clamp fitting 8 presses against the rear surface of the tool tool 5.
The cutting tool 5 is firmly clamped.

Since the lid 12 and the rubber ring 16 are attached, foreign objects such as chips and dust generated during cutting do not enter the bolt threads or the gaps around them, making it difficult to remove the bolts 9. There isn't.

In the embodiment of the present invention, the case where the lower bit is clamped has been explained, but it can also be applied to the case where the upper bit is clamped (in this case, it will be vertically symmetrical with respect to the strip line), and other gist of the present invention. Of course, various changes can be made without departing from the above.

Since the tool clamping device of the present invention has the above-described configuration, the bolt can be rotated smoothly at all times, and therefore, the tool tool can be replaced quickly.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of a conventional bite clamp device, and FIGS. 3 and 4 are explanatory diagrams of a bite clamp device of the present invention. In the diagram, 2 is the bite frame, 4 is the edge, 5 is the bite, 6
is the notch, 7 is the tool stand, 8 is the tool clamp fitting,
12 is a lid, 13 is a gap, and 16 is a rubber ring.

Claims (1)

[Scope of utility model registration request] Insert the bolt that attaches the tool clamp to the tool frame into the tool clamp that presses down the sloped part of the rear surface of the tool, and attach the lid that holds the bolt between the bolt head and the surface of the tool clamp, and connect the tool frame and the tool. A bite clamp device characterized in that a ring for removing foreign matter is attached to surround the outer periphery of the bolt in the gap formed between the clamp fitting and the clamp fitting.