KR101481157B1 - A Chuck body for clamping machine work for reducing the weight - Google Patents

Abstract

The present invention relates to a chuck body capable of reducing the weight thereof. The chuck body includes multiple space units which are concavely formed at the back side of the chuck body. The space units are separated by reinforcement units from one another, and are sealed by a circular plate body with a through-hole at the center thereof. The circular plate body is coupled with the back side of the chuck body by a fastening fixture while being hung on the reinforcement unit and a hanging projection formed on the inner or outer side of the space unit. Thus, provided in the present invention is the chuck body which includes a soundproof and dustproof cover for a chuck that reduces the weight thereof. Therefore, the chuck body can maintain excellent rigidity by using an alloy steel or a carbon steel with good rigidity for a mechanical structure, and can significantly reduce the weight thereof by being manufactured in not a cutting method but a molding method in order to form multiple space units at the back side thereof. In addition, the chuck body can firmly and stably couple the circular cover using the reinforcement unit and the hanging projection formed at the back side thereof, and can remove disadvantages caused by reducing the weight of the chuck, including enormous noise and the inflow of foreign materials.

Description

Technical Field [0001] The present invention relates to a chuck body having a sound-absorbing cover,

More particularly, the present invention relates to a chuck body having a cover for reducing the weight of a chuck having reduced weight, and more particularly, to a chuck body capable of reducing weight to enable high-speed rotation, minimizing weight and load reduction of equipment, And a cover for preventing noise from occurring due to a groove formed for weight reduction and preventing foreign matter from entering the chuck body.

In general, the most common of the machine tools used to machine workpieces is a lathe, which is a manually operated universal lathe (manual lathe), an automatically operated numerical control lathe, and a computer numerically controlled It is classified as a lathe.

Especially, computer numerical control lathes called CNC lathes are machine tools equipped with a controller on a universal lathe, and can automatically process various parts by a program. The computer numerical control lathe is composed of a controller, which is an electronic device capable of automatically operating the machine, and a machine body, which is a mechanical device. The controller controls the operation of the machine body by a CNC system program, a PLC program, The body of the machine is similar to the structure of a general purpose lath, including a head stock, a chuck, a tool post, a tail stock, a bed, a carriage, a transfer device, .

In this case, the lathe chuck is provided at the end of the main shaft to grasp the object to be processed, and is usually formed of a chuck, a pneumatic chuck, a hydraulic chuck, a collet chuck, a magnetic chuck and the like and usually has three or four jaws ) Are moved or interlocked with each other so as to firmly grasp the object to be processed.

Most of the conventional chucks are formed by cutting metal alloy structural steels or mechanical structural carbon steels. The mechanical steels alloy steels and carbon steels have a specific weight of about 7.77, and the larger the size, the heavier the weight, , It interferes with the high-speed rotation and lowers the workability, and therefore, the machining time is inevitably increased.

Also, since a too heavy chuck increases the weight of the equipment, and the load on the device and the motor also becomes large, a heavy load is imposed on the device and the durability of the device is lowered.

Conventionally, in order to reduce the weight of the chuck as described above, it has been developed to construct a light-weight chuck by constructing a chuck body made of alloy steel for mechanical structure and aluminum alloy having a specific gravity lower than that of carbon steel as disclosed in Korean Patent No. 10-1248997 However, this is disadvantageous in that it is easy to wear due to low strength and rigidity due to the characteristics of the aluminum alloy material, and that a separate reinforcing portion is formed in a certain region of the sliding portion in order to reinforce the weak strength and rigidity.

In order to solve the above-described problems, an object of the present invention is to provide a chuck body which is made of alloy steel and carbon steel having good rigidity, The present invention provides a chuck body for mounting a workpiece, which is manufactured by a casting method rather than a method of forming a plurality of space portions behind the chuck body.

In addition, when a plurality of space portions are formed in the rear of the chuck body, a great resonance noise occurs during chuck rotation, and a disadvantage that a large amount of foreign substances are introduced into the rear of the chuck body due to the generated vacuum is solved. There is a purpose in providing a chuck body.

In order to achieve the above object, the present invention provides a method of manufacturing a chuck body by using a steel structure and a carbon steel having good rigidity, A plurality of space portions are formed in the rear of the body so as to reduce the weight of the chuck, the space portions being separated from each other by a covering portion, and the space portion being sealed by a circular plate body having a through hole, And is configured to be engaged by the fastening means in a state in which the fastening means is placed on, or held by, the fastening protrusion formed on the inside or outside of the space portion.

The effect of the chuck body formed with the cover for soundproofing vibration reduction of the chuck according to the embodiment of the present invention as described above is that the rigidity is maintained as it is by using the alloy steel and the carbon steel having good rigidity in the manufacturing of the chuck body The weight is reduced by forming a groove for weight reduction, and the casting method is not a cutting method but a plurality of space parts are formed behind the chuck body, so that the weight can be remarkably reduced.

In addition, it is possible to combine the circular cover very firmly and stably by the cover and the jaw formed at the back of the chuck body, so that an additional disadvantage caused by reducing the weight of the chuck, that is, This is a very useful invention.

1 is a perspective view showing only a chuck body for mounting a workpiece in the present invention.
Figure 2 is a front view of Figure 1;
3 is an exploded perspective view of a chuck body for mounting a workpiece of the present invention.
Fig. 4 is a perspective view of the coupled state of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a chuck body having a cover for soundproofing of a chuck with reduced weight according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. &Quot; and / or "include each and every combination of one or more of the mentioned items. ≪ RTI ID = 0.0 >

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" And can be used to easily describe a correlation between an element and other elements. Spatially relative terms should be understood in terms of the directions shown in the drawings, including the different directions of components at the time of use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

1 is a perspective view showing only a chuck body for mounting a workpiece in the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is an exploded perspective view of a chuck body for mounting a workpiece of the present invention, FIG.

First, in the drawings, it is noted that the same components or parts are denoted by the same reference numerals as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

The chuck body having the cover for soundproofing vibration reduction of the chuck body reduced in weight according to the present invention has a plurality of hollow portions 120 recessed at the back of the chuck body 110 to reduce the weight of the chuck, The circular plate body 160 is divided by the piling section 130 and separated from each other and the space section 120 is sealed by the circular plate body 160 having the through hole 161 at the center, Is configured to be coupled to the rear side of the chuck body 110 by the fastening tool 170 in a state in which the fastening body 140 is placed on the fastening protrusion 140 formed on the inner side or the outer side of the body 130 and the space 120.

The inside or outside of the space 120 is referred to as the inside closer to the center of the chuck body 110 and the closer to the center of the chuck body 110 the outside.

The height of the protruding portion 130 and the engagement protuberance 140 is set to be greater than the height of the surface of the circular plate member 160. In other words, the circular plate member 160 is supported by the protrusions 130 and the protrusions 140, The circular plate body 160 is not protruded from the rear surface of the chuck body 110 when the circular plate body 160 is inserted into the rear of the chuck body 110. [ At this time, the through hole 161 formed at the center is necessary to prevent interference with workpieces crossing the center of the chuck body.

The space portion 120 is a portion that removes an unnecessary portion from the chuck body 110 in order to reduce the weight of the chuck body 110. Accordingly, the space portion 120 is recessed from the surface of the chuck body 110, So that it has a recessed concave groove structure.

However, in forming the space 120, if the chuck body 110 has a recessed structure from the surface of the chuck body 110, the weight of the chuck body 110 may be uneven, . ≪ / RTI >

In addition, when the circular plate 160 for blocking the space 120 is coupled to the back of the chuck body 110, there is no portion to be coupled, which makes it difficult to achieve balanced and stable coupling. Therefore, in the present invention, the space portion 120 is divided into a comparatively uniform volume by the covering portion 130, and the space portions 120 are separated from each other by the covering portion 130.

Accordingly, the cover 130 uniformly supports the middle portion of the circular plate 160, and the latching jaw 140 supports the inner or outer edge of the circular plate 160, thereby enabling more stable engagement .

At this time, the circular plate body 160 and the chuck body 110 are coupled by a known fastener 170, and the fastener 170 is a screw or a bolt.

A threaded fastening hole 150 is formed in the fastening protrusion 130 and the fastening protrusion 140 so as to engage with the fastening hole 170. The fastening hole 170 is formed in the circular plate 160, A plurality of through holes 162 are preferably drilled.

The circular plate body 160 coupled to the back of the chuck body 110 by the fastening tool 170 completely blocks or hermetically seals the space 120, thereby preventing a great noise generated during chuck rotation, In addition, a large amount of foreign substances are prevented from entering behind the chuck body 110 by the vacuum generated by the space portion 120.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the present invention is not limited thereto and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

110: chuck body 120:
130: crease 140: jaw
150: screw fastening hole 160: circular plate
170: fastener

Claims (1)

A chuck body for reducing the weight by forming a concave hollow space behind the chuck body,
The space portion is partitioned by a plurality of the covering portions so as to be separated from each other,
And a locking protrusion is formed on the inner side or the outer side of the space portion,
A plurality of screw fastening holes are formed in the fastening protrusion and the cover,
Wherein a circular plate having a through hole formed at the center thereof is mounted on the engaging jaw and the cover, and is coupled to the rear of the chuck body by a fastener.

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