JPH03210964A - Casting flash removing machine - Google Patents

Abstract

PURPOSE:To accurately and surely remove flash in a casting without using grinder, etc., by pushing down a broach providing a broach edge along the fixed locus after fixing the casting in a guide jig at the time of cutting and removing the flash in the casting. CONSTITUTION:The casting 14 having flash 21 is fixed so that the flash 21 is positioned in the shifting locus of broach edge 9 in the guide jig 12, and a leg piece 8 fitting the broach edge 9 is inserted in guide groove 16 of the guide jig 12. A head 7 arranged at upper part of the leg piece 8 and extended to horizontal direction is supported with plural upper and lower rollers 3, 5 in a broach supporting plate 2 and horizontally shifted, and also ram plate 1 on the supporting plate 2 is pushed down with hydraulic pressure. The leg piece 8 in the broach 6 is descended while being guided with a liner 17 of the guide groove 16 in the broach guide 13, and the flash 21 in the casting 14 is accurately cut and removed with the broach edge 9 fitted to the leg piece 8. The flash is surely cut and removed without developing dust with grinder and sicking white finger of operators.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a deburring machine for removing burrs from a workpiece such as a weir, a sprue, etc., or a body cavity.

(Conventional technology) In cast products, the weirs and hollow parts that connect the runner or riser to the workpiece become burrs and remain on the workpiece. Therefore, it is essential to remove these burrs to produce a finished product. The simplest method for deburring is for a worker to use a grinder to remove burrs from the workpiece one by one. In order to automate this simple work, a deburring machine has been developed that uses a hydraulic press and performs press burr cutting in response to the movement of a ram from above or below.

(Problem B to be solved by the present invention) Deburring work using a grinder has many problems such as deterioration of the working environment due to dust, risk of white wax disease due to vibration, and fatigue due to physical labor.

On the other hand, deburring machines have a ram that moves in a vertical direction, and are effective for deburring vertical surfaces of workpieces, but are not suitable for deburring surfaces with draft angles.

Therefore, it would be possible to fix the workpiece so that the draft plane is perpendicular to the jig and set this jig in the deburring machine, but this would be time consuming and increase man-hours, making it virtually impossible. So, in the end, deburring of such places will have to be done manually using a grinder.

Therefore, it is an object of the present invention to solve the above-mentioned problems of the prior art.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a vertically movable support plate, a horizontal head at one end of which is movable horizontally to the support plate via rollers. It has a broach that is held and has a blade extending downward from the head, a guide jig that makes the ascending and descending path of the broach constant, and a work supported by the guide jig, and a workpiece that is placed on the support plate or To provide a deburring machine characterized in that a downward movement causes the blade of the broach to remove burrs from a workpiece.

(Function) When the support plate is pushed down by fluid pressure, the head of the broach moves laterally due to the displacement of the roller, and the broach moves downward. The broach moves along the guide of the guide jig, and the broach blade moves at the same angle as the draft angle of the workpiece.

That is, the blade moves along the draft surface of the workpiece to remove burrs. The downward movement of the support plate completely removes the burr.

(Example) Refer to Figures 1-3. A broach support plate 2 is fixed to a ram plate 1 connected to a piston of a hydraulic cylinder. The support plate 2 has a 7-shaped cross section, and has a plurality of rollers 3 arranged on its inner upper surface, and a plurality of rollers 5 arranged on the left and right sides of an opening 4 on its inner lower surface.

The broach 6 has a head 7 that enters the interior of the support plate 2 through the opening 4 and contacts the roller 3.5.

Although the head 7 extends horizontally, a leg piece 8 is formed integrally with the head 7 and is inclined with respect to a perpendicular line perpendicular to the horizontal line. A broach blade 9 is attached to the outer surface of the leg piece 8. Two of these brooches 6 are placed back to back.

The guide jig 1 is attached to the lower surface plate 10 via the jig mounting plate 11.
Fix 2. The guide jig 12 includes a broach guide 13 that guides the broach blade 9 and a work support 15 that holds a work 14. The broach guide 13 is the broach 8
and a pair of guide grooves 1 that are substantially equal in cross-sectional shape to the broach blade 9.
6, and a liner 17 is disposed between the side guide grooves 16 in a portion that guides the movement of the opposing sides of both broaches 8, thereby smoothing the movement of the broaches 8. The work support 15 has opposing side walls 19 and a broach guide 18 at the center thereof.The side walls 19 receive, for example, the outer peripheral surface of the ring-shaped work 14, and the broach guide 18 supports both sides of the pair of broaches 8. It is made to be able to freely slide in contact with the liner 20.

The inner peripheral surface of the workpiece 14 has a draft angle and a burr 21 . With the large diameter side of the inner circumference of the work 14 facing downward, the work 14 is placed into the guide jig 12 from the left and right directions in FIG.
is positioned within the plane of movement of the broach blade 9.

During the deburring work, the workpiece 14 is placed in the guide jig 12 so that the burr 21 on its inner peripheral surface is located within the locus of the broach blade 9. From the state shown in FIG. 1, the ram disc 1 is pushed down by fluid pressure. Since the lowering of the ram disk 1 lowers the support disk 2, the broach also moves downward. Brooch guide 1
The legs 8 of the broach 6 inserted into the broach 3 direct the movement of the broach 6, so that its head 7 is moved horizontally with little resistance by the rollers 3.5. Descended brooch 6
The blade 9 cuts off the burr 21 while being guided by the liner 17 of the guide groove 16 of the broach guide 13 (see the imaginary line in FIG. 1). The broach 6 from which the burr 21 has been removed is returned to the state shown by the solid line in FIG. 1 by raising the ram disc 1. Next, the workpiece 14 is replaced and the next deburring operation is performed.

(Effects) According to the present invention, when the support plate is moved up and down, the broach is lowered while being moved horizontally by the roller, so that deburring of the tapered surface can be reliably and easily performed.

Since the broach is guided by the guide groove, its trajectory is constant and the finished state of the deburred surface is good. or,
Since the liner of the broach guide is always in contact with the broach, the blade does not escape during burr removal.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an example of the present invention, FIG. 2 is a sectional view taken along arrows 1--2 in FIG. 1, and FIG. 3 is a plan view of a guide jig. In the diagram: 2...Support plate, 3.5...Roller, 6...
・Broach, 7...Head, 9...Broach blade, 1
2...Guide jig, 14...Work, 15...Work support, 17...Liner, 18...Broach guide, 21...Burr.

Claims (1)

[Claims] A broach having a vertically movable support plate, a horizontal head at one end of which is held movably in the horizontal direction on the support plate via a roller, and a blade extending downward from the head; the broach moves up and down. The present invention is characterized in that it has a guide jig that keeps the path constant, and a workpiece supported by the guide jig, and that upward or downward movement of the support plate causes the blade of the broach to remove burrs on the workpiece. Deburring machine.