JPH0222210Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention is a method of charging a workpiece, media, and, if necessary, water, compound, etc. (hereinafter collectively referred to as a mass) into a barrel tank. This belongs to the field of annular vibrating barrel processing machines that are used when barrel processing is performed by imparting vibrational motion to the barrel tank and the mass.

This invention has a barrel tank with a triangular guide for the purpose of preventing the separation of the media and workpiece during vibrating barrel machining and promoting the smooth introduction of the mass into the lower part of the cylinder of the barrel tank. This relates to a vibrating barrel processing machine.

(Prior art and problems to be solved) Conventionally, when processing lightweight workpieces with a vibrating barrel processing machine, the lightweight workpieces often float on the peripheral wall of the cylindrical part and do not sink into the mass; There was a problem that the workpieces collided with each other, causing deformation and dents in the workpieces, and uneven finishing. This drawback is particularly noticeable when heavy spherical media such as steel balls are used.

(Means for Solving the Problems) However, according to the present invention, an annular triangular guide with a substantially triangular vertical cross section is attached to the peripheral wall of the cylindrical part of an annular vibrating barrel processing machine, thereby solving all of the above drawbacks. It was extremely successful.

The present invention relates to an improvement of an annular vibrating barrel processing machine. Especially when processing light workpieces, the inner wall of the barrel tank is designed so that the mass can circulate smoothly without the workpiece separating from the media and floating. A mass flow guiding member is attached to the top.

That is, this invention provides a processing machine having an upwardly-opening barrel tank having a cylindrical portion in the center and an outer wall curved inwardly in an arcuate cross-section. This is a vibrating barrel processing machine having a barrel tank with a triangular guide, which is characterized in that an annular triangular guide whose lower part is inclined so as to approach the circumferential wall of the cylindrical portion is attached. Further, the triangular guide is attached to the peripheral wall of the cylindrical portion so as to be movable in the vertical direction.

The present invention can be configured so that the flow of the mass is smooth, so preferably the flow surface of the mass is configured so as to contact the apex of the triangular guide. If so, you can almost achieve your goal. Also, depending on the amount of mass, the flow surface of the mass moves up and down, so if the annular triangular guide is moved up and down to match this, the flow state of the mass can be made even smoother.

(Function) In a vibrating barrel processing machine having a cylindrical portion in the center, the present invention provides an annular guide having a substantially triangular vertical cross section to bulge the upper circumferential wall of the cylindrical portion of the barrel tank, and a mass on the descending side surface of the bulge. Since the flow surface of the mass can be brought into contact with the guide, the mass can flow smoothly along the guide and separation of the media and the workpiece can be prevented. Therefore, even if the work is relatively lightweight, the purpose of the work can be achieved without floating. Furthermore, by making the triangular guide movable, the guide can be adjusted to the best position depending on the amount of mass.

(Example) An example of the present invention will be described with reference to the attached drawings. Figures 1 and 2 show a stepless annular barrel tank in which the present invention is applied, and the inner wall is lined with rubber or synthetic resin. The cylindrical portion 4 of the barrel tank 1 which has been subjected to the above steps is fixed to the flange 11. The flange 11 is suspended on a spring 3 mounted on a frame 2.
A motor 5 is fixed to the motor receiver 12 attached to the cylindrical portion 4, and unbalance weights 6, 6a are fixed to the upper and lower ends of its rotating shaft. When the motor 5 is driven, the rotating shaft and the unbalanced weights 6, 6a are rotated, and the barrel tank 1 and the mass within the barrel tank are vibrated to machine a workpiece. The state of movement of the mass in the tank during this processing is such that the mass is vibrated and moves circularly in the vertical direction within the barrel tank as shown by arrow 8 in Figure 1, and moves forward as shown by arrow 9 in Figure 2. As a result, as shown by arrow 8a in the figure, the material flows spirally in the barrel tank, and the workpiece is processed by the media. The barrel tank 1 has a circular vertical cross section, is open at the top, and has a vertical frame 10 on the outer wall.

In the present invention, as shown in the sectional view of FIG. 3, an annular triangular guide 7 having a substantially triangular vertical cross section is fitted and fixed to the peripheral wall of the cylindrical portion 4. The triangular guide 7 is formed into a hollow shape by lining the surface of an iron plate with rubber or synthetic resin, and is attached to the cylindrical portion 4 with bolts 14 and nuts 15. The triangular guide 7 is attached to the cylinder 4 so that the mass flow surface contacts the descending side surface 7a of the triangular guide. Normally, as a general rule, processing is carried out by charging almost 100% of the mass into the barrel tank 1, and the upper surface of the mass has a flowing surface shape as shown in A in Figure 3, and the mass flows. The workpieces floating on the surface are quickly guided into the mass along the descending side surface 7a of the triangular guide, so there is no deformation or dents caused by collisions between the workpieces, and a uniform finish can be achieved. Can be done.

Next, FIG. 4 shows another embodiment of the present invention, in which the mounting position of the triangular guide can be adjusted. To adjust this mounting position,
A long hole 13 is provided in the cylindrical portion 4 of the barrel tank in the vertical direction,
A bolt 14 is inserted into the elongated hole 13 and screwed into a nut 15 attached to the triangular guide 7. Normally, as a general rule, machining is carried out by charging 100% of the capacity of the mass into the barrel tank, so the triangular guide 7 is installed at the position shown by the solid line in Fig. 4, similar to the embodiment shown in Fig. 3. If the media is worn out and the mass amount is, for example, 70% of the barrel tank capacity (if the mass amount is less than 70%, the polishing power will be halved, so add or replace the media and reduce the mass amount to the barrel tank capacity. (must be 100% of can do. Therefore, if the structure is such that the position of the triangular guide can be adjusted, even if the mass amount is within or outside of 100%, the mounting position of the triangular guide can be appropriately adjusted to allow polishing under optimal polishing conditions.

(Effect of the invention) That is, according to the invention, an annular guide having a substantially triangular vertical section is attached to the upper circumferential wall of the cylindrical part of the barrel tank and bulged, so that the flow surface of the mass can come into contact with the descending side surface of the annular guide. Because of this, the mass flows smoothly along the guide, which has the effect of preventing the media from separating from the workpiece.As a result, even relatively lightweight workpieces can be spread evenly without floating. It has the effect of polishing. Furthermore, by making the triangular guide movable up and down, it is possible to adjust the triangular guide to the best position depending on the amount of mass during use.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment according to the present invention, FIG. 2 is a plan view, FIG. 3 is a partially enlarged sectional view, and FIG. 4 is a partially enlarged sectional view of another embodiment. 1... Barrel tank, 2... Frame, 3... Spring, 4... Cylindrical part, 7... Triangular guide, 7'
...Descent position of triangular guide, 7a...Descent side,
8, 8a...Arrow indicating mass flow, 13...Elongated hole, A...Mass flow surface when mass amount is 100%, B
...The flow surface of the mass when the mass amount decreases.

Claims (1)

[Claims for Utility Model Registration] 1. In a processing machine having an upwardly opening barrel tank having a cylindrical portion at the center and an outer wall curved inwardly in an arcuate cross-section, the peripheral wall of the cylindrical portion has an approximately vertical cross section. 1. A vibrating barrel processing machine having a barrel tank with a triangular guide, characterized in that an annular triangular guide is attached to the inner wall of the triangular shape and the inner wall is inclined so that the lower part approaches the circumferential wall of the cylindrical part. 2. A vibrating barrel processing machine having a barrel tank with a triangular guide according to claim 1, wherein the triangular guide is attached to the circumferential wall of the cylindrical portion so as to be movable in the vertical direction.