JPH06270049A - Trimming device for illumination globe - Google Patents

Abstract

PURPOSE:To cut the opening edge efficiently, and obtain excellent finishing accuracy by cutting the opening edge of a slobe after a rotary cutter is pushed against it while rotating the slobe by a spindle stock. CONSTITUTION:When the opening edge G1 of a illuminating glass globe G is cut, the globe G is gripped by a chuck 21, and a feed means 5 is driven in a condition where a rotary cutter 3 and a taper cup grinding wheel 42 are rotated, and a spindle stock 2 is fed quickly to the rotary cutter 3 side along the Y axis. Next, when a detecting switch 72 detects that the opening edge G1 of the globe G reaches a position just before the rotary cutter 3, the spindle stock 2 is switched to cutting feed by delay feed. When the opening edge G1 is cut inside slightly by the rotary cutter 3 while rotating the globe G, feed is stopped, and after a shallow slit is formed on a full arc of the opening edge G1, the feed is resumed, and the opening edge G1 is cut without rest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a edging device used for cutting an opening edge of a lighting globe made of glass.

[0002]

2. Description of the Related Art Conventionally, as an illumination globe for covering a light emitting body such as a fluorescent lamp or a light bulb, there has been provided an entire globe made of glass. In the manufacture of this glass glove, due to the weight variation of the material,
The total length of the glove may vary, or unevenness may occur on the open end surface. For this reason, it is necessary to remove the opening edge by the edging device and finish it uniformly. As the edging device, a polishing type edging device that grinds and removes the opening edge of the glove by pressing the opening edge of the glove against a flat grindstone that rotates around a vertical axis, and opposes with the opening edge of the glove interposed therebetween. The pair of narrow grindstones (rotary cutters) made to approach each other are made to approach each other, and the outer peripheral sides of the opening edge are cut, and then the grindstones are separated from each other, and the glove is set to 9
There is known a cutting-type edging device that cuts an uncut portion again with a grindstone in a state where the cutting position is shifted by turning 0 °.

[0003]

The above-described polishing type edging device needs to grind off a predetermined amount of the opening edge of the globe by polishing, so that it requires a great number of man-hours and has a problem of poor production efficiency. It was In addition, the cutting type edging device cuts the opening edge, so the production efficiency is better than the polishing type, but since the opening edge of the glove is cut in two times, the first cutting surface There is a problem that a step is generated between the second cut surface and the second cut surface, and the finish accuracy of the cut surface is poor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an edging globe edging device capable of efficiently cutting the opening edge of the globe with good finishing accuracy. .

[0005]

According to a first aspect of the present invention, there is provided a lighting glove edging device according to claim 1, wherein the glove is chucked in an edging device for cutting an opening edge of a glass lighting glove. A headstock for rotating the headstock, a rotary cutter at least having an outer periphery made of a grindstone, and a feeding means for relatively moving the rotary cutter and the headstock so as to cut the opening edge of the globe from the circumferential direction. It is characterized by.

Further, in the edging globe edging device according to the second aspect, when the opening edge of the globe is slightly cut, relative movement between the rotary cutter and the headstock is stopped,
After making a shallow cut on the entire circumference of the opening edge of the globe, a feeding control means is provided for controlling the feeding means so as to cut the opening edge of the globe again. Furthermore, the edging globe edging device according to a second aspect comprises a polishing finishing means for polishing the cut surface after cutting the opening edge.

[0007]

According to the edging globe edging device of the first aspect, the rotary cutter and the headstock are relatively moved by the feeding means while the globe is chucked and rotated by the headstock. Thus, the opening edge of the globe can be cut by the rotary cutter to cut the opening edge. In this way, since the opening edge of the globe is cut while rotating, the opening edge can be efficiently cut without forming a step on the cut surface.

According to the edging globe edging device of the second aspect, it is possible to make a shallow cut on the entire circumference of the opening edge of the globe before cutting the opening edge of the globe. Therefore, the cutting of the opening edge by the rotary cutter can be guided by the cut, and the opening edge can be prevented from being damaged due to the change of the cutting direction of the rotary cutter.

Further, according to the edging globe edging device of the third aspect, after cutting the opening edge of the globe,
The cut surface can be polished and finished by the polishing and finishing means. Therefore, the opening edge of the glove can be finished with higher accuracy, and the opening edge cutting step and the cut surface finishing step can be continuously performed.

[0010]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view showing an edging device for an illumination glove of the present invention, and FIG. 2 is a front view. In the edging device, the headstock 2 is arranged on the base 1, and the rotary cutter 3 for cutting and removing the opening edge G1 of the glass globe G on the opposite side of the headstock 2, and the cutting of the opening edge G1. The polishing finishing means 4 for polishing the surface is arranged.

The headstock 2 includes a work chuck 21 for chucking the globe G, and a rotation driving means 22 for rotationally driving the work chuck 21. The work chuck 21 is integrally rotatably fixed to the tip of a main shaft 24 rotatably supported by a bearing unit 23. This work chuck 21 is capable of alternately chucking and releasing the glove G by opening and closing a plurality of chuck claws 21a by pneumatic pressure or hydraulic pressure. The chuck claw 21
“A” is a rod-shaped member and is covered with a cover made of urethane rubber or the like so as not to damage the globe G. Further, the rotation driving means 22 includes a first motor 22a,
It is composed of a pair of pulleys 22b attached to the rotary shaft of the first motor 22a and the main shaft 24, and a belt 22c wound between the pulleys 22b. It can be driven to rotate.

The headstock 2 is mounted on a first slide table 25 which is reciprocally slidable along its axial direction (X-axis direction in FIG. 1). This first slide table 2
5 is slidably supported in the above direction by the second slide table 26, and can be slid via a feed screw (not shown) by rotating the handle 25a. This first slide table 2
The cutting position of the opening edge G1 of the globe G can be adjusted by the slide adjustment of 5.

The second slide table 26 can be reciprocally slid by the feeding means 5 in a direction orthogonal to the axial direction of the headstock 2 (Y-axis direction in FIG. 1). This feeding means 5 includes a second motor 51 (see FIG. 3) capable of shifting,
The feed screw 5 rotationally driven by the second motor 51
2 is configured to move the globe G to a position corresponding to the rotary cutter 3 by the sliding operation of the second slide table 26 by the feeding means 5, and the rotary cutter 3 is moved to the opening edge G1 of the globe G. It can be cut by cutting it into the opening edge G
After the cutting of No. 1, the globe G can be transferred to a position corresponding to the polishing finishing means 4 and the cut surface of the opening edge G1 can be ground. The feed means 5 slides the second slide table 26 at two speeds, fast feed and slow feed, and the feed control means 6 so as to appropriately slide and stop the second slide table 26.
Drive is controlled by.

The rotary cutter 3 is in the form of a narrow disk and is composed of, for example, a diamond grindstone having diamond abrasive grains fixed to the outer periphery of a metal disk plate. This rotary cutter 3 has an opening edge G1 of the globe G.
Is rotatably supported in a cantilever manner by a cutter base 31 so as to cut the belt 3 from the outer peripheral side at a right angle.
It is rotationally driven via 3. In addition, the cutter table 31
Is mounted together with the third motor 32 on a third slide table 34 that can move in the vertical direction, and the handle 34
The relative position with respect to the cut surface of the globe G can be adjusted by rotating a. The peripheral speed of the rotary cutter 3 is set to about 150 m / min, for example. Further, the rotary cutter 3 can be supplied with coolant at least at the time of cutting by a coolant supply means (not shown).

The polishing finishing means 4 comprises a taper cup grindstone 42 rotatably supported by a grindstone base 41, and a fourth motor 43 for rotationally driving the taper cup grindstone 42. The rotation axis of the tapered cup grindstone 42 is set to be parallel to the rotation axis of the rotary cutter 3. Further, the taper cup grindstone 42 and the fourth motor 43
Is mounted on the fourth slide table 44 that can slide in the X-axis direction in FIG. 1, and the amount of polishing of the opening edge G1 of the globe G can be adjusted by rotating the handle 44a. Furthermore, the above-mentioned taper cup grindstone 4
The coolant can be supplied to No. 2 by the above-mentioned coolant supply means at least during polishing.

On the base 1, a first detection switch 71 for detecting that the headstock 2 is located at the home position P and an opening edge G1 of the globe G are attached to the rotary cutter 3 by the headstock 2. A second detection switch 72 that detects that the glove G has been transferred to the immediately preceding position, and a third detection switch 7 that detects that the globe G has been transferred to the cutting completion position.
3 and the fourth detection switch 74 for detecting that the globe G, which has completed the cutting of the opening edge G1, has been transferred to the position immediately in front of the tapered cup grindstone 42, is arranged along the sliding direction of the second slide table 26. They are provided in order. Each of these detection switches is composed of, for example, a proximity switch or a micro switch, and the detection position can be adjusted according to the size of the opening edge G1 of the globe G.

The operation of the edging device having the above structure is as follows. First, in the home position P, with the work chuck 21 chucking the globe G,
When the automatic operation switch is turned on, the rotary cutter 3 and the taper cup grindstone 42 are rotationally driven, and the feed control unit 6 drives the feed unit 5 to fast-forward the headstock 2 to the rotary cutter 3 side along the Y axis. Let Next, when the second detection switch 72 detects that the opening edge G1 of the globe G has reached the position immediately before the rotary cutter 3, the feed control means 6 switches the headstock 2 to the cutting feed by the slow feed. At the same time, the work chuck 21 is rotationally driven. Then, the rotary cutter 3 opens the opening edge G of the globe G.
At the time when 1 is slightly cut, the feed control means 6 stops the cut feed of the headstock 2. Thereby, with respect to the globe G having the opening edge G1 having a circular cross section, a shallow cut can be formed on the entire circumference of the opening edge G1. The cutting feed of the headstock 2 is stopped by, for example, a delay timer that operates based on a signal from the second detection switch 72.

When a shallow cut is formed on the entire circumference of the opening edge G1 of the globe G, the feed control means 6 restarts the cutting feed of the headstock 2. Thereby, the opening edge G1 of the globe G can be cut at once by the rotary cutter 3. At this time, since a cut is formed on the entire circumference of the opening edge G1, it is possible to guide the cut of the rotary cutter 3 by the cut and prevent the cut direction from changing. Therefore, the opening edge G1 can be prevented from being broken during cutting.

Next, when the third detection switch 73 detects that the opening edge G1 of the globe G has been cut, the feed control means 6 again moves the headstock 2 along the Y axis to the polishing finishing means 4 side. When the glove G reaches the position immediately before the taper cup grindstone 42 by fast-forwarding, the fourth detection switch 7
When 4 detects, the headstock 2 is switched to the slow feed. By this slow feed, the cut surface of the glove G can be polished and finished by the tapered cup grindstone 42. Then, when the polishing finish is performed for a certain period of time, the feed control means 6 reverses the feed means 5 to move the headstock 2 to the home position P.
To return.

As described above, according to the edging device, the opening edge G1 of the globe G is cut while being rotated,
The opening edge G1 can be efficiently cut without forming a step on the cut surface. Moreover, since the cut surface by the rotary cutter 3 is polished and finished by the polishing and finishing means 4, a further excellent finished surface can be obtained, and the cutting step and the polishing and finishing step can be performed continuously, so that the edging work can be performed. Can be done more efficiently.

The rotary cutter 3 may be entirely made of a grindstone, and in short, any tool having a grindstone at least on the outer circumference can be used. Further, the polishing finishing means 4 is configured as needed. The edging device of the present invention is not limited to the above embodiment, and for example, the glove G
When the opening edge G1 of the above reaches the position immediately before the rotary cutter 3, the rotary cutter 3 is moved to the opening edge G1 side along the Y-axis so that the opening edge G1 is cut.
By moving the tapered cup grindstone 42 toward the globe G side along the X axis, various design changes can be made, such as polishing the cut surface of the globe G.

[0022]

As described above, according to the edging globe edging device of the first aspect, since the opening edge of the globe can be cut while rotating the globe by the headstock, the opening edge of the opening edge can be cut off. It is possible to obtain a glove which can be efficiently cut, has no step on the cut surface, and has a good finishing accuracy for the cut surface.

According to the edging globe edging device of the second aspect, since a shallow cut can be made in the entire circumference of the opening edge of the globe prior to cutting the opening edge of the globe, a rotary cutter is used. The notch of the opening edge is guided by the above-mentioned cut, and it is possible to prevent the opening edge from being damaged. further,
According to the edging globe edging device of claim 3,
After cutting the opening edge of the globe, the cutting surface can be polished by the polishing finishing means, so that the cutting surface can be finished more accurately, and the polishing finishing can be performed continuously in the cutting step. Therefore, there is a unique effect that the edging work can be performed more efficiently.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an edging globe edging device of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG.

[Explanation of symbols]

 2 Headstock 3 Rotating cutter 5 Feeding means 6 Feeding control means 4 Abrasive finishing means G Glove G1 Opening edge

Claims (3)

[Claims] 1. A edging device for cutting an opening edge of a glass lighting globe, a headstock for chucking and rotating the globe, a rotary cutter having at least an outer periphery made of a grindstone, and an opening edge of the globe. An edging device for an illumination glove, comprising: a rotary cutter and a feed means for relatively moving the headstock so as to cut from the circumferential direction. 2. When the opening edge of the globe is slightly cut, relative movement between the rotary cutter and the headstock is stopped,
The lighting globe edging device according to claim 1, further comprising a feed control means for controlling the feeding means so as to re-cut the opening edge of the globe after making a shallow cut on the entire circumference of the opening edge of the globe. 3. The edging device for an illumination glove according to claim 1, further comprising polishing finishing means for polishing the cut surface after cutting the opening edge.