JP3075135U - Structure of twin cam pneumatic engraving machine - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a structure of a twin cam pneumatic engraving machine. SOLUTION: An eccentric motion generated by an eccentric portion provided in a rotor 10 in a closed-type rotary mechanism is transmitted to a clamp head connecting rod 37 via bearings 24 and 25 and an interlocking mechanism to reciprocate to perform cutting. , And used for processing operations such as impact and low-speed mirror polishing.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a structure of a twin-cam pneumatic engraving machine, and in particular, transmits the eccentric motion generated by an eccentric part provided in a rotor in a closed-type rotary mechanism to a clamp head connecting rod via a bearing and an interlocking mechanism. The present invention relates to the structure of a twin-cam pneumatic engraving machine which is used for processing operations such as cutting and impact and low-speed mirror polishing by reciprocating.

[0002]

[Prior art]

 A well-known reciprocating pneumatic engraving machine drives a rotating shaft by driving an inner impeller structure with high-pressure gas, and further connects the rotating shaft to an eccentric sheet by a belt or a speed difference mechanism, and a clamp connected to the eccentric sheet. The head performs reciprocating motion to achieve the reciprocating machining function. Such known reciprocating pneumatic engraving machines required a large number of parts to be assembled, wasting the operating energy of the rotating shaft and increasing the assembly procedure. Another known type of reciprocating pneumatic engraving machine is to force high pressure air through different flow paths to force the valve body and the propulsion means to move back and forth to move the clamp head back and forth. These two types of well-known pneumatic tools have a small amount of high-pressure air, and when the tool clamped by the clamp head is pressed against the workpiece with force, the clamp head is likely to lose power. If the air engraving machine has poor airtightness and the air intake is small, part of the energy will be lost and it will not be possible to obtain sufficient thrust. In addition, even when operating at high speed, there was a drawback that the rotation speed was insufficient due to insufficient thrust and the noise was excessive.

[0003]

[Problems to be solved by the invention]

 In consideration of the high and low speed limits of the well-known pneumatic engraving machine, the present invention is a kind of twin cam pneumatic that can process low-speed mirror polishing in addition to high rotation speed of 20,000 revolutions per minute and expand the range of use. It is an object to provide an engraving machine structure.

That is, a main object of the present invention is to provide a twin-cam pneumatic engraving machine that can be applied to machining operations such as cutting and hitting and low-speed mirror polishing, thereby increasing the airtightness of the rotating mechanism itself. This increases the efficiency of use of the high-pressure gas, and transmits the reciprocating motion of the clamp head connecting rod to the clamp head connecting rod via the interlocking mechanism through the eccentric rotational motion generated by the eccentric part provided in the rotor of the rotating mechanism. It shall be formed by

Another object of the present invention is to use a hollow clamp head connecting rod to guide the gas discharged from the rotating mechanism to the outside of the case, and to blow the dust to the machined portion of the workpiece according to the present invention, and to blow off the dust. The purpose is to allow the machined parts to cool.

[0006]

[Means for Solving the Problems]

 The invention according to claim 1 is a twin cam pneumatic engraving machine having a rotating mechanism and an interlocking mechanism, wherein the rotating mechanism includes a rotor (10) and a rotor frame (20), and the rotor (10). Includes at least a pressure receiving portion (11), a rotating shaft (12), and an eccentric portion (13) in the axial direction, and the pressure receiving portion (11) and the rotating shaft (12) are one and the same and fixed rotating shaft. A plurality of impellers (15) having an eccentric portion (13) having an eccentric shaft different from the rotating shaft (12) at an equal distance on an outer edge of the pressure receiving portion (11); A rotor chamber (21), an air inlet (22) and an exhaust port (23) are provided in the frame (20), and the rotor (10) is housed in the rotor chamber (21). A pair of connecting rods (30, 31) and a tubular clamp head connecting rod (37); Two connecting parts (301, 302, 311 and 312) are respectively installed on the connecting rods (30 and 31), and two connecting parts (301 and 311) are connected to the eccentric part (13) described above. Two connecting portions (302, 312) are pivotally connected to a clamp head connecting rod (37) projecting out of the case by a pivot (36) and fixed by a nut (38), and are connected to the clamp head connecting rod (37). A twin cam pneumatic engraving machine characterized in that a linear bearing is provided between the cases (40). According to a second aspect of the present invention, the rotating mechanism is a single hermetic space, and the hermetic space includes a rotor frame (20), a bearing (25, 26), an impeller (15), and the aforementioned rotating shaft ( The twin-cam pneumatic engraving machine according to claim 1, characterized in that the composition is constituted by (12). The invention according to claim 3 is that a plurality of ventilation grooves (14) communicating with an air supply source are fitted at fitting positions of the pressure receiving portion (11) of the rotor (10) with the impeller (15). A twin cam pneumatic engraving machine according to claim 1 characterized by the above-mentioned.

[0007]

[Embodiment of the invention]

 As shown in FIGS. 1 and 2, according to the present invention, two parts, a rotating mechanism and an interlocking mechanism, are arranged in a case (40). First, the structure of the rotation mechanism will be described below. Basically, the rotating mechanism is composed of one rotor (10), a plurality of impellers (15), a rotor frame (20), and bearings (25, 26). The outer edge of the rotor frame (20) is in contact with the inner edge of the twin cam pneumatic engraver case (40). In addition, one gas supply device (50) is provided at a portion of the case (40) connected to the rotation mechanism to supply gas to the rotation mechanism.

Next, the interlocking mechanism comprises a connecting rod (30, 31) made of a seismic composite material containing fibers, a plurality of bearings (32, 33, 34, 35), a pivot (36) and It is composed of one tubular clamping head connecting rod (37) and is fixed with nuts (38). The operation of the rotating mechanism is such that a high-pressure gas is supplied from an inlet (22) provided in the rotor frame (20) to a rotor chamber (21) in which the rotor (10) in the rotor frame (20) is placed. And blows out of the rotor chamber (21) from the exhaust port (23) corresponding to the intake port (22) of the rotor frame (20) (see FIG. 5). Among them, the bearings (23, 24) and the rotor chamber (21) on both sides form one hermetic space, and the impeller (15) interposed between the rotor frame (20) and the rotor (10) is provided. The rotor (10) is rotated by the drive of the airflow. In addition, the rotor (10) is divided into three parts, namely, a pressure receiving part (11), a rotating shaft (12), and an eccentric part (13). The impeller (15) is fitted into the impeller (15) so that the angle between the impellers (15) is equal, and a ventilation groove (14) is provided at a fitting portion of the pressure receiving portion (11) with the impeller (15). Is to introduce a high-pressure gas, push the impeller (15) and bring it into contact with the rotor frame (20), thereby facilitating the impeller (15) to be pushed by the high-pressure airflow, as shown in FIG. Further, the rotating shaft (12) is rotated by the bearings (23, 24) with the rotating shaft (12) of the rotor (10) fixed as an axis, and the eccentric portion (13) is rotated by the above-described rotating shaft. The eccentric rotation is performed with the eccentric shaft as the eccentric shaft, and the interlocking mechanism is The connecting rod (30, 31) in the interlocking mechanism has connecting parts (301, 302, 311, 312) having openings at both ends thereof, and two connecting rods (30, 31) are provided. , 31) are connected to the eccentric part (13) of the rotating shaft (12) by using the bearings (33, 34) described above, and the other connecting part (301, 311) is used. (302, 312) are also combined with the pivot (36) using the bearings (32, 35), and one end of the clamp head connecting rod (37) described above is connected to two ends by the pivot (36) and the nut (38). The clamp head connecting rod (37) is sandwiched between the rods (30, 31), and the other end of the clamp head connecting rod (37) is extended out of the case (40) (see FIG. 3) to clamp the clamp head device (60) ( (See FIG. 1).

Please refer to FIG. This figure is a stroke operation display diagram of the present invention. The eccentric part of the rotating shaft (13) The maximum circumferential position of the outer edge bearing (33), the related position of the interlocking mechanism, and the stroke range of the pivot (36) are clamped. It is regarded as the trajectory of the reciprocating motion of the head connecting rod (37), and is used for processing operations such as cutting and hitting and low-speed mirror polishing. In order to prevent the inner edge of the case (40) from being worn during the operation of the clamp head connecting rod (37), a plurality of linear bearings (41) are provided between the clamp head connecting rod (37) and the case (40). Is sandwiched.

Finally, FIG. 5 shows a fitting state of the impeller (15) and the rotor (10), and shows a temporary operation feature of the rotating mechanism. When the rotor (10) is in motion, the gas pushes out the impeller (15) and makes contact with the rotor frame (20) by the guide of the ventilation groove (14), and the impeller (15) moves the low-speed minute airflow. By driving, the rotor (10) starts rotating.

[0011]

[Effect of the invention]

 Taken together, the structure of the present invention completes the following effects. 1. Can be used for low-speed mirror polishing. Due to the mutual combination between the rotor (10), the rotor frame (20), and the bearings (23, 24) in the rotating mechanism, one hermetic space is jointly formed, and the high-pressure gas that has sufficiently entered is removed. It can be used and achieves the function of low-speed starting and low-speed operation by the function of the ventilation groove (14) in the rotor (10). 2. The rotor (10) has three parts, the rotor (10) is rotated by the impeller (15) of the pressure receiving part (11), and the bearing (12) supports the rotor (10) and fixes the fixed shaft. It rotates as a center, and the eccentric part (13) performs an eccentric rotational movement to the above-mentioned fixed axis. 3. The clamp head connecting rod (37) of the interlocking mechanism is combined with the eccentric part (13) by the connecting rods (30, 31), the pivots (36) and the bearings (25, 26) to perform reciprocating high-speed movement. 4. Utilizing one hollow clamp head connecting rod (37), the gas discharged from the rotating mechanism is led out of the case and blown to the processing portion of the workpiece to blow off dust and cool the portion.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the entire structure of the present invention.

FIG. 2 is an exploded view of the rotation mechanism and the interlocking mechanism of the present invention.

FIG. 3 is a sectional view after the combination of the present invention.

FIG. 4 is a view showing a stroke operation of the present invention.

FIG. 5 is a cross-sectional view of the impeller of the present invention attached to a rotor and a rotor frame.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Rotor 11 Pressure receiving part 12 Rotating shaft 13 Eccentric part 14 Vent groove 15 Impeller 20 Rotor frame 21 Rotor room 22 Inlet 23 Exhaust port 24, 25 Bearing 30, 31 Connecting rod 32, 33, 34, 35 Bearing 301 , 302, 311, 312 Connecting part 36 Axis 37 Clamp head connecting rod 38 Nut 40 Case 41 Linear bearing 50 Air supply device 60 Clamp head device

Claims (3)

[Utility model registration claims] 1. A twin cam pneumatic engraving machine having a rotating mechanism and an interlocking mechanism, wherein the rotating mechanism comprises a rotor (10) and a rotor frame (20).
The rotor (10) axially includes at least a pressure receiving portion (11), a rotating shaft (12), and an eccentric portion (13), and the pressure receiving portion (11) and the rotating shaft (12) are The pressure receiving part (11) having one and the same fixed axis of rotation, the eccentric part (13) having an eccentric axis different from the rotating axis (12);
A plurality of impellers (15) are fitted at equal distances on the outer edge,
A rotor chamber (21), an air inlet (22), and an exhaust port (23) are provided in the rotor frame (20), and the rotor (10) is housed in the rotor chamber (21). The connecting mechanism includes a pair of connecting rods (30, 31) and a tubular clamp head connecting rod (37), and each of the connecting rods (30, 31) has two connecting portions (301, 30).
2, 311 and 312), of which two connecting portions (301 and 311) are connected to the eccentric portion (13) and the other two connecting portions (302 and 312) are protruded out of the case. It is pivotally connected to the connecting rod (37) by a pivot (36) and is fixed by a nut (38), and a linear bearing is provided between the clamp head connecting rod (37) and the case (40). , Twin cam pneumatic engraving machine structure. 2. The rotating mechanism is an airtight space,
The airtight space is formed by the rotor frame (20), the bearing (25,
26), the impeller (15), and the rotating shaft (12) described above.
The structure of the twin cam pneumatic engraving machine according to claim 1, characterized in that: 3. A plurality of ventilation grooves (14) communicating with an air supply source are fitted into fitting positions of the pressure receiving portion (11) of the rotor (10) with the impeller (15). Do
The structure of the twin cam pneumatic engraving machine according to claim 1.