JPH0621847U - Grinding wheel cover - Google Patents

Abstract

(57) [Abstract] [Purpose] To adjust the position of the torch relative to the work easily and accurately without interfering with the various members of the vibration device. [Configuration] When the vertical shaft 22 is rotated, the bevel gear 23 is
Since the horizontal screw rod 21 that is linked via the screw rotates and the screw feed action of the horizontal screw rod 21 and the female screw block 24 fixed to the support (rear plate) 15, the entire vibrating device moves laterally. Positioning with respect to the work can be performed easily. Further, since the vertical shaft 22 and the horizontal screw rod 21 are orthogonal to each other on one side of the support member 15 and the horizontal screw rod 21 is screwed into the female screw block 24 of the support member 15, they are different from each other in the vibration device. Interference with the member is prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grinding wheel cover that facilitates replacement of 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. 3 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. 3) 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.

As shown in FIG. 2, both grinding wheels (4) are covered by a cover (7) on the peripheral surface and both front and rear side surfaces, except for the grinding portions facing each other. The cover (7) has bent legs (7a) fixed to the sliding plate (2) with bolts (8).

On the peripheral surface of the cover (7), there is a dust outlet (9) for sucking dust generated during chamfering by the grinding wheel (4) through a bellows hose (not shown) by a dust suction device. They are installed in series.

Between the two grinding wheels (4), a pair of left and right screw rods (10) facing in the front-rear direction and parallel to each other are provided above each other by a motor (not shown). It is provided so as to rotate in the same direction at a constant speed.

Between the two threaded rods (10) 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 The first support plate (11) located slightly above the lower end of the trough of the rod (10) is attached to the substrate (1) by a column (not shown).

A second support plate (12) whose upper surface is at the same height as the upper surface of the first support plate (11) is provided between the two threaded rods (10) and the two grinding wheels (4), and the support column (13). Is attached to the substrate (1).

At the upper part of the support column (13), the left and right sides of the second support plate (12), which are almost at the same height as the first support plate (11), are formed on the outer side of each second support plate (12) and immediately before and after both grinding wheels (4). Also, the front and rear four guide plates (14) are mounted vertically, and the distance between the left and right guide plates (14) (14) is adjusted to be approximately equal to the length of the round bar-shaped work (15).

Immediately above the first support plate (11), there is provided an endless presser belt (16) which is parallel to the first support plate (11) and runs rearward.

As shown in the figure, when a round bar-shaped work (15) is fed in the left-right direction on the front ends of the rotating screw rods (10), the work (15) is moved to both screw rods (10). It fits in the trough and moves backward while being guided by the left and right guide plates (14).

The work (15) is held between the first support plate (11) and the presser belt (16) 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 (14), the left end is immediately chamfered by the left grinding wheel (4).

Then, the right end is chamfered by the right grinding wheel (4). 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 (9).

[0015]

[Problems to be solved by the device]

 Since the grinding wheel (4) of the chamfering device described above gradually wears during use, it must be periodically replaced, and for that purpose, the cover (7) must be removed.

However, the grinding wheel of the chamfering device is arranged so as to be surrounded by various members, and the bolt (8) for fixing the cover (7) to the sliding plate (2) is illustrated. As described above, since it is directly below the cover (7) and the periphery of the bolt is surrounded by the leg portion (7a) of the cover, both bearings (3a), the motor for driving the grinding wheel (4), etc., The work of inserting and removing the tool is very troublesome and takes a lot of time, and even if the bolt is removed, the cover (7) surrounds most of the grinding wheel (4), so the removal is troublesome. .

The present invention has been made to solve the above problems, and an object of the present invention is to provide a grinding wheel cover in which the grinding wheel can be easily replaced.

[0018]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a lower cover fixed to a base for mounting a grinding wheel to cover a lower half of the grinding wheel and an upper half of the grinding wheel with a part of an outer peripheral surface opened. The upper and lower covers cover the upper and lower parts, and the upper and lower covers are detachably connected to each other by a locking member provided on the outer peripheral surfaces of the opening ends facing each other and a fastening member.

[0019]

[Action]

 The lower cover that covers the lower half of the grinding wheel and the upper cover that covers the upper half are connected to each other by the latching member and the fastener, so that the upper cover can be easily operated by simply engaging and disengaging the fastener. The grinding wheel can be easily replaced without removing the lower cover.

[0020]

【Example】

 FIG. 1 shows a cover (21) of the present invention, in which the same members as those of the above-mentioned conventional member are designated by the same reference numerals. The cover on the right side is formed symmetrically with the cover (21), and a description thereof will be omitted.

As shown in the figure, the cover (21) includes a lower cover (22) that covers the lower half of the grinding wheel (4) and an upper cover (23) that also covers the upper half of the grinding wheel (4) at approximately the center. The lower cover (22), which is divided into two parts and opens on the upper surface, has a pair of legs (22a) vertically extending from the lower end thereof fixed to the sliding plate (2) with bolts (8), so that the grinding wheel ( 4) Covers the lower half.

An engaging pin (24) slightly protruding upward is fixed to the outer peripheral surface of the right opening end of the lower cover (22) by a fixing ring (25). A known toggle type clamper (26) is fixed to the outer peripheral surface of the left opening end. (27) is a dust outlet fixed to the outer peripheral surface of the upper cover (23).

The right end side of the upper cover (23), which is placed on the open end of the lower cover (22) and has an opening on the lower surface, has an engaging ring (28) protruding outward from the right open end of its outer peripheral surface. ) Is fitted onto the engaging pin (24) of the lower cover (22) to be locked. Further, on the left end side of the upper cover (23), by hooking the toggle type clamper (26) of the lower cover (22) to the hook (29) fixed laterally to the opening end of the outer peripheral surface of the upper cover (23), It is integrally fixed to the lower cover (22).

A window hole (30) is formed in the upper right portion of the upper cover (23) by cutting the cover (23), and the grinding wheel (4) is exposed from this portion.

As described above, the cover (21) of the present invention simply hooks the toggle type clamper (26) to the hook (29) without removing the entire cover or the bolts fixing the cover, unlike the conventional case. Since only the upper cover (23) can be removed upward by a very simple operation of removing it further, the grinding wheel (4) can be replaced very easily.

Moreover, as is clear from FIGS. 1 and 2, since the lower cover (22) covers the lower half of the grinding wheel (4), the dustproof effect is significantly greater than that of the conventional cover.

In the above embodiment, the pin (24) and the ring (28) and the toggle clamper (26) and the hook (29) are used to connect the upper and lower covers (22) and (23). Toggle clampers (26) and hooks (29) may be used for both joints, and other simple joints may be used because a large load is not applied to both joints.

The present invention is not limited to the grinding wheel for the chamfering device, but can be effectively applied to a grinding machine or the like in which the grinding wheel is surrounded by a large number of members and the cover of which is difficult to attach and detach. .

[0029]

[Effect of device]

 According to the present invention, the grindstone can be operated by simply operating only the tightening fitting and removing the upper cover upward without removing the bolts for fixing the cover or removing the entire cover as in the past. Since the car can be easily replaced, even if the grinding wheel is surrounded by various members, the replacement work can be performed quickly.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a grinding wheel cover of the present invention.

FIG. 2 is a front view of a conventional grinding wheel cover.

FIG. 3 is a plan view of a main part of a chamfering device for a round bar-shaped work.

[Explanation of symbols]

 (1) Board (2) Sliding plate (3) Bearing (4) Grinding wheel (4a) Rotating shaft (5) Pulley (6) V-belt (7) Cover (7a) Leg (8) Bolt (9) Discharge Dust port (10) Screw rod (11) First support plate (12) Second support plate (13) Strut (14) Guide plate (15) Workpiece (16) Presser belt (21) Cover (22) Lower cover (22a) ) Leg (23) Top cover (24) Engagement pin (Latching member) (25) Fixing ring (26) Toggle clamper (Tightening metal fitting) (27) Dust outlet (28) Engagement ring (Latching) Material) (29) Hook (30) Window hole

Claims (1)

[Scope of utility model registration request] 1. A lower cover fixed to a base for attaching a grinding wheel to cover a lower half of the grinding wheel, and an upper cover having a part of an outer peripheral surface opened to cover an upper half of the grinding wheel. Becomes
A grindstone cover characterized in that these upper and lower cover parts are detachably coupled by a hooking member and a fastening member provided on the outer peripheral surfaces of the opening end portions facing each other.