JPH0621837U - Work guide device for chamfering device on both ends of round bar work - Google Patents

Abstract

(57) [Abstract] [Purpose] While a round bar-shaped workpiece is placed on a pair of rotating screw rods and transported, when chamfering both ends with a grinding wheel, the material moves laterally and one end It prevents excessive chamfering and facilitates attachment and detachment of the entire device and grindstone cover. [Structure] Grinding wheel 4 on the side where the workpiece 16 moves
A bolt for inserting a mounting plate 22 straddling the grinding wheel 4 on the upper surfaces of both bearings 3 of the above, and a daruma hole 23 and a notch groove 24 formed at both ends thereof.
Since it is fixed with 21, the bolt 21 can be loosened, and the mounting plate 22 and the guide plate 31 fixed to it can be removed by only slightly shifting the mounting plate 22 to the right side.
The wheel wheel cover 7 can be easily attached and detached, and the wheel wheel 4 can be easily replaced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a guide device for preventing lateral movement of a work in a chamfering device that chamfers both ends of a round bar-shaped work with a grinding wheel.

[0002]

[Prior art]

 For example, a round bar-shaped work for manufacturing an engine valve is usually manufactured by shearing a long round bar to a predetermined length, but burrs are generated on both cut surfaces of the obtained work. If such burrs occur, it will be difficult to grip them with the work gripping device in the next process, or they will not be smoothly inserted into the mold.Therefore, it is necessary to chamfer both edges of the cut surface to remove the burrs. is there.

FIG. 5 schematically shows an example of a chamfering device, in which a pair of left and right sliding plates (2) whose left and right positions can be adjusted are installed on a horizontal substrate (1). The sliding plate (2) on one side is located slightly forward (downward in FIG. 5) from the sliding plate (2) on the right side.

Both ends of the rotary shaft (4a) of the grinding wheel (4) are pivotally supported by a pair of front and rear bearings (3) which are erected on the upper end opposite ends of both sliding plates (2), Both grinding wheels (4) are fixed by a V-belt (6) hung between a pulley (5) fitted on the rotating shaft (4a) and a motor (not shown) pulley on the substrate (1). Can be rotated in the direction.

Both grinding wheels (4) are covered by a cover (7) as shown in FIG. 3, and the cover (7) is provided at the center so that the worn grinding wheels (4) can be easily replaced. It is divided into a lower cover (7a) and an upper cover (7b). The lower cover (7a) is fixed to the sliding plate (2), and the upper cover (7b) is removable on the lower cover (7a) by the engagement pin (8) and the toggle clamper (9). Are linked to. (10) is a dust outlet.

Between the two grinding wheels (4), a pair of left and right screw rods (11) facing in the front-rear direction and parallel to each other are provided slightly above the axis of the grinding wheels (4) by a motor (not shown). It is provided so as to rotate counterclockwise at a constant speed.

Between the two threaded rods (11) and between the front of the left grinding wheel (4) and the rear of the right grinding wheel (4), the front and rear direction is faced, and the upper surface is a double screw. The first support plate (12) located slightly above the lower end of the trough of the rod (11) is attached to the substrate (1) by a column (not shown).

A second support plate (13) whose upper surface is at the same height as the upper surface of the first support plate (12) is provided between the two threaded rods (11) and the two grinding wheels (4). Is attached to the substrate (1).

At the upper part of the support column (14), on the outer side of each second support plate (13) and immediately before and after both grinding wheels (4), the left and right sides that are almost at the same height as the first support plate (12). Further, the front and rear four guide plates (15) are mounted vertically, and the distance between the left and right guide plates (15) (15) is adjusted to be approximately equal to the length of the round bar-shaped work (16).

Immediately above the first support plate (12), there is provided an endless presser belt (17) which is parallel to the first support plate (12) and runs rearward.

As shown in the figure, when a round bar-shaped work (16) is fed in the left-right direction on the front ends of the rotating screw rods (11), the work (16) is rotated by the screw rods (11). It fits in the trough and moves backward while being guided by the left and right guide plates (15).

The work (16) is clamped between the first support plate (12) and the presser belt (17) in front of the grinding wheel (4) on the left side, and is rotated while being guided by the left and right guide plates (14). ) And the left end comes off the left front guide plate (15), the left end is immediately chamfered by the left grinding wheel (4).

At this time, the work (16) trying to escape to the right from the grinding wheel (4) is blocked by the guide plate (15) on the right side, and the second support plate (13) on the left side works (16). Since the left end of) is supported from below, the left end of the work (16) is chamfered without trouble, and then the right end is chamfered by the grinding wheel (4) on the right side. The dust generated at this time is prevented from scattering to the surroundings by the cover (7) and is discharged from the dust discharge port (10).

[0014]

[Problems to be solved by the device]

 In the above-mentioned chamfering device, the work (16) constantly tries to move to the left side due to the rotation of the screw rods (11), so the guide wheel (15) is interrupted on the left grinding wheel (4). When passing through, it may be chamfered excessively.

In order to prevent this, it is considered to provide a guide plate directly above the grinding surface of the grinding wheel (4) on the left side. Conventionally, the support body that supports the guide plate is the cover (7). It was fixedly attached to the upper cover (7b) by horizontally extending over. However, if this is done, the support must be removed when the grinding wheel (4) is replaced, and the removal work was very troublesome.

The present invention has been made to solve the above-mentioned problems, and prevents the work from being chamfered excessively, and also provides a guide plate and a guide plate directly above the grinding surface of the grinding wheel and above the cover. It is an object of the present invention to provide a work guide device in which even if a support is provided, it is easy to remove them and the grinding wheel can be replaced quickly.

[0017]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is to mount a round bar-shaped work on a pair of screw rods that are horizontal and parallel to each other and rotate at the same speed in the same direction, while transporting the work, while the grindstone wheel is being conveyed. In a chamfering device that chamfers both ends of a work by means of a chamfering machine, attach a mounting plate to the upper surface of both bearings of the grinding wheel or the cover of the grinding wheel on the side where the work is going to move sideways by the rotation of the screw rod. Removably and laterally with a plurality of through holes consisting of a circular hole formed in the above and a laterally long hole continuous to it, or a bolt for inserting the through hole and the notch groove formed at the end edge. A guide plate is fixed at the side end of the mounting plate on the side of the screw rod so as to regulate the lateral movement of the work so that the lower end edge of the guide plate is located directly above the grinding surface of the grinding wheel. And is fixed in parallel with the screw rod. .

[0018]

[Action]

 According to the device of the present invention, if the bolts screwed into the bearing or the cover are simply loosened and the entire mounting plate is moved slightly to one side, the head of the bolt will pass through the through hole. The fixed guide plate can be easily removed. Therefore, it is easy to attach and detach the cover for the grinding wheel, and the grinding wheel can be easily replaced.

[0019]

【Example】

 1 to 4 show an embodiment of the present invention, in which the same parts as those of the above-mentioned conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

Bolts (21) are respectively screwed into a pair of left and right female screw holes (not shown) formed on the upper surfaces of the front and rear bearings (3) of the left grinding wheel (4). .

On both bearings (3), outwardly L-shaped legs (22a) at the front and rear ends of a mounting plate (22) that straddles directly above the cover (7) are placed. On the right side of each leg (22a), a long hole through which the shaft of the bolt (21) can be inserted is provided at the right end of a circular hole through which the head of the bolt (21) can be inserted. A daruma hole (through hole) (23) is formed, and a notch groove (24) through which the shaft portion of the bolt (21) can be inserted is also formed at the left end.

The mounting plate (22) engages the boss holes (23) and the cut grooves (24) of the leg portions (22a) with both bolts (21) from the right side so that both bolts (21) It is fixed on both bearings (3) by screwing. A bearing plate (25) facing upward is fixed to the center of the left surface of the mounting hole (22).

At the center of the upper surface of the mounting plate (22), a substantially square sliding plate (26) is provided with a pair of front and rear projections (not shown) provided on the lower surface of the sliding plate (26) on the upper surface of the mounting plate (22). By being fitted in a pair of front and rear engagement grooves (27) formed in the left and right direction, the slide groove is mounted slidably in the left and right direction.

At the center of the left surface of the sliding plate (26), a bearing plate (25) is screwed with an adjusting screw rod (28) pivotally mounted so as not to move left and right.

A horizontal rod (29) facing the front-rear direction is fixed to the right end of the sliding plate (26), and a mounting piece (30) (30) vertically installed on both front and rear ends of the right surface of the horizontal rod (29). The front and rear ends of a guide plate (31) parallel to the screw rod (11) are fixed to the lower end of the right surface.

As shown in FIG. 3, the lower end edge of the guide plate (31) is located slightly above the lower end of the work (16) conveyed on the screw rod (11), and the grinding wheel (4) The chamfering is performed by contacting the lower end face of the workpiece (16) passing through in the vicinity of the grinding surface of the oblique upper side of the grinding wheel (4) with the grinding surface of the grinding wheel (4).

The guide plate (31) can be adjusted in the left-right position by rotating the knob (28a) of the adjusting screw (28).

In the device of the present invention described above, even when the work (16) passes the right side of the grinding wheel (4) on the left side, the upper left end face of the work (16) always contacts the guide plate (31). Since they are in contact with each other, the end face is not chamfered excessively.

When the grinding wheel (4) is worn, the grinding wheel (4) is moved rightward together with the sliding plate (2), and the guide plate (31) is correspondingly adjusted with the adjusting screw. The knob (28a) of (28) may be operated to move it to the left to maintain a predetermined distance from the right guide plate (not shown).

When the grinding wheel (4) is significantly worn, loosen each bolt (21) of the bearing (3), move the entire mounting plate (22) slightly to the right, and then remove it upward, and then The grinding wheel (4) can be easily replaced by removing the upper cover (7b) upward.

Although the mounting plate (22) is mounted on the bearing (3) in the above embodiment, it can be mounted on the upper surface of the cover (7) if the cover (7) is rigidly manufactured with high dimensional accuracy. Alternatively, the through holes for inserting the bolts (21) may be formed with two daruma holes (23) instead of the cut grooves (24).

[0032]

[Effect of device]

 According to the present invention, since the guide plate is provided just above the grinding surface of the grinding wheel, even if the work moves laterally due to the rotation of the screw rod, there is no fear of being excessively chamfered. Moreover, since the mounting plate and the guide plate can be attached and detached by a simple operation, the grinding wheel can be easily replaced in a short time.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a chamfering device to which the present invention is applied.

FIG. 2 is a side view of the main part taken along the line AA of FIG.

FIG. 3 is a vertical sectional front view of a main part taken along the line BB of FIG.

FIG. 4 is a plan view of a main part of a conventional chamfering device.

[Explanation of symbols]

(1) Substrate (2) Sliding plate (3) Bearing (4) Grinding wheel (4a) Rotating shaft (5) Pulley (6) V-belt (7) Cover (7a) Lower cover (7b) Upper cover (8) Engagement pin (9) Toggle type clamper (10) Dust outlet (11) Screw rod (12) First support plate (13) Second support plate (14) Strut (15) Guide plate (16) Workpiece (17) Presser belt (21) Bolt (22) Mounting plate (22a) Leg (23) Daruma hole (through hole) (24) Notch groove (25) Bearing plate (26) Sliding plate (27) Engagement groove (28 ) Adjusting rod (28a) Knob (29) Horizontal rod (30) Mounting piece (31) Guide plate (31a) Notch groove

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoji Nagashima 2958 Ishikawa, Fujisawa City, Kanagawa Fuji Valve Co., Ltd. Fujisawa Factory

Claims (1)

[Scope of utility model registration request] 1. A round bar-shaped work is placed on a pair of screw rods that are horizontal and parallel to each other and that rotate in the same direction at a constant speed, while being conveyed, while chamfering both ends of the work with a grinding wheel. In the chamfering device, on the upper surface of both bearings of the grinding wheel or on the upper surface of the grinding wheel cover on the side where the work is going to move sideways by the rotation of the screw rod, a mounting plate is formed in a circular hole formed in its proper place and A plurality of through-holes formed of laterally elongated holes, or with a bolt that inserts the through-holes and the notch formed in the end edge portion, detachably and laterally adjustable, and at the same time, attach the mounting plate. At the side end on the screw rod side, a guide plate for restricting the lateral movement of the work is fixed in parallel with the screw rod so that the lower end edge thereof is located directly above the grinding surface of the grinding wheel. For chamfering device on both ends of round bar-shaped work Work guide device.