KR200149685Y1 - Gear change cylinder structure of - Google Patents

Abstract

The present invention relates to a multi-stage shifting cylinder structure of a spindle speed conversion gear for a machine tool (boring machine), and in particular, a low speed and a medium speed speed depending on a selection of a gear position used as a speed converter of a spindle inside a machine tool. Multi-stage shifting cylinder is installed to convert to high speed, neutral position, etc., and the main shaft according to the characteristics of the workpiece in actual use, that is, the shape, size, processing margin, required precision, tool and processing method of the workpiece. It can be used to freely deform and adjust the rotation of the workpiece to facilitate the processing of the workpiece, and to achieve high processing precision, resulting in the added value of the entire machine tool manufactured using the technology of the present invention. It is designed to improve the merchandise and reliability.

Description

Multi-stage variable speed cylinder structure of spindle speed change gear for machine tool (boring machine)

The present invention relates to a multi-stage variable speed cylinder structure of a spindle speed conversion gear for a machine tool (bore ring machine), and in particular, a low speed and a medium speed speed depending on a position of a gear used as a speed converter of a spindle inside a machine tool. Multi-stage shifting cylinders are installed to convert them to high speed and neutral positions, and the main shaft is suitable for the characteristics of the workpieces in actual use, that is, the shape, size, processing margin, required precision, required tools and processing methods. It can be used to freely deform and adjust the rotation of the workpiece to facilitate the processing of the workpiece, and to achieve high processing precision, resulting in the added value of the entire machine tool manufactured using the technology of the present invention. Spindle speed converters for machine tools (boring machines) for improved product quality and reliability To a multi-stage shift cylinder structure.

Generally, the boring machine belonging to a machine tool is used to finish machining the inside of the hole into the intended shape by using the boring machine, or the inner hole is first formed in the drilled hole or forging or casting. It is a machine for enlarging work. The cutting type is similar to the inner working of the lathe, but the method is different.

Here, in order to apply the above-described processing to the workpiece inside the boring machine to process the workpiece through such a work, the boring bite is fixedly installed at a predetermined portion so that the work can be substantially performed. A device is provided to connect the spindle to be processed according to the characteristics of the workpiece. This is commonly referred to as the two-speed cylinder structure of the spindle speed conversion gear, and the two-speed cylinder of the spindle speed conversion gear is Although the structure has been described in detail in the former description, in more detail, the hydraulic pressure is applied to the cylinder spaces formed on the left and right sides of the main shaft constituting the boring machine, and the main shaft is moved to the left and right side by the hydraulic pressure, and the one side of the main shaft Gears formed integrally with the part are formed separately at a certain part By engaging in the genus, and was low gear to be produced, depending on the nature of the work to be applied to machining.

As described above, the boring machine is applied with hydraulic pressure to the cylinder spaces formed on the left and right sides of the main shaft constituting the machine, and the main shaft is moved to the left and right by the hydraulic pressure, and is integrally formed at one side of the main shaft. Four-speed cylinder of the spindle speed conversion gear of the conventional machine tool (boring machine) manufactured for the purpose of machining the gear according to the characteristics of the workpiece by engaging the gear with the high speed and the low speed gear formed separately in a certain part. The structure has shown a typical example as shown in Figure 1, briefly described as follows.

As shown, a cylinder space portion 24 is formed at a predetermined portion of the column 12 formed at one side of the machine tool 10 and is open at both sides in the center thereof, and the cylinder space portion 24 at the lower portion thereof. The cylinder body 18 in which several flow paths 28 communicate with a predetermined portion of the cylinder body 18 is fastened and fixed, and the dog 30 is formed on one side on the cylinder space portion 24 formed in the cylinder body 18. It is fixedly installed and the main shaft 16 which integrally forms the piston 34 protruding outward is inserted in the center by inserting the piston 34 part protruding in the said center from the side direction. have.

On the other hand, the piston 34 formed in the center of the main shaft 16 is inserted into and connected to both sides of the cylinder space portion that is opened to both sides is inserted into the cylinder space 24 on one side and fastened to the opening A cover 38 is provided to seal the closed portion, and the tile side is fastened to the exposed portion of the two shafts 16 inserted thereinto to seal the opened portion, as well as to determine the stroke of the main shaft 16. Locking nut 32 is provided.

In addition, a lower gear is provided with several gears 20 which can give a rotational force at a high speed or a low speed, and one side of the gear 20 is provided with a shifter 52 for holding the gear 20. The top of the shifter 52 is provided with a pin 40 for connecting the main shaft 16 and the shifter 52, the upper side of the main shaft 16, the main shaft 16 when the main shaft 16 is moved A plate 42 is provided to secure the dog 30, which is integrally fixed to one side of the side), and a plurality of end-stage sensing limit switches 44 protruding from each other. The solenoid valve 50 for selectively changing the flow of hydraulic pressure is connected.

According to the related art, the solenoid valve 50 selects the hydraulic pressure in a direction intended by the user when the user selects to apply hydraulic pressure to the flow path 28 formed in communication with the left or right side of the cylinder space. Only when the hydraulic pressure flows, first, when the hydraulic pressure is applied only to the flow path 28 formed in communication with the right side of the cylinder space portion 24, the hydraulic pressure flows into the right side of the cylinder space portion 24 and the main shaft The piston 34, which is integrally formed at the center of the 16, is moved to the left by a predetermined distance. In this case, the piston 34 moving to the left side shifts the main shaft 16 and the shifter 52 and the gear 20 formed at one side of the main shaft 16 to the left side at the same time to shift to the low speed stage. It is to be done. On the other hand, the dog 30 is integrally formed on the main shaft 16 located in the center of the angular stage sensing limit switch 44 which is protruded to the lower part of the plate 42 formed on the upper side of the one side is the one side The user is informed that the gear shift to the low speed end is completed by being grounded to the angular detection limit switch 44 formed on the left side of the angular detection limit switch 44 which protrudes from the lower part of the plate 42 formed on the upper part. It is to inform.

When the hydraulic pressure is applied only to the flow path 28 formed in communication with the left side of the cylinder space portion 24, the hydraulic pressure flows to the left side of the cylinder space portion 24, and thus the center of the main shaft 16. The piston 34 which is integrally formed in the is moved to the right by a predetermined distance. At this time, the piston 34 moving to the right moves the main shaft 16 and the shifter 52 formed on one side of the main shaft 16 and the gear 20 to the right to shift gears at high speed. It is to be done. On the other hand, the dog 30 is integrally formed on the main shaft 16 located in the center of the angular stage sensing limit switch 44 which is protruded to the lower part of the plate 42 formed on the upper side of the one side is the one side The user is informed that the gear shift to the high speed stage is completed by being grounded to the angular stage detection limit switch 44 formed on the right side of the angular stage sensing limit switch 44 which is protruded to the lower part of the plate 42 formed on the upper side. It is to inform.

However, the conventional design, which is configured and made in this manner, uses a cylinder that achieves a simple operation similar to that of a general cylinder to convert the main shaft 16 into a high speed and a low speed stage, as described above. As can be seen from one bar, it is possible to achieve only simple shifting in two stages, but the gear shift in two or more stages cannot be achieved. Therefore, the characteristics of the workpiece, such as shape, size, processing margin, Due to the inability to freely deform the spindle rotation in accordance with the precision, tools and machining methods, the problem of the machining of the workpieces cannot be easily achieved, resulting in deterioration of machining accuracy. As a result, the overall added value produced by using the technology of the present invention is lowered, thereby reducing the merchandise and reliability. The problem with that was that.

Therefore, the present invention has been devised in view of the above problems, and the rotation of the main shaft is freely modified according to the characteristics of the workpiece during actual use, that is, the shape, size, processing margin, required precision, tool and processing method of the workpiece. It can be adjusted and used to make the processing of the workpiece easily and at the same time, to achieve a high processing precision, and consequently to improve the added value of the whole machine tool manufactured using the technology of the present invention to improve the merchandise and reliability, etc. It is an object of the present invention to provide a multi-speed cylinder structure of a spindle speed conversion gear for a machine tool (boring machine) that can be improved.

The purpose of the present invention is a spindle speed for a machine tool (boring machine) equipped with a cylinder structure for changing the position of a gear that applies rotational force to the spindle to a high speed stage, a low speed stage, and a neutral stage. In the multi-stage cylinder structure of the conversion gear, a multi-stage shifting cylinder which converts the position of the gear used as the speed converter of the main shaft inside the machine tool to the positions of low speed, medium speed, high speed, and neutral according to the selection. It can be achieved by installing the configuration.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view showing the main parts of a multi-stage shifting cylinder structure of a spindle speed conversion gear for a conventional machine tool (boring machine).

2 is a sectional side view showing the main part of a multi-stage shifting cylinder structure of a spindle speed conversion gear for a machine tool (bore ring machine) according to the present invention;

3 is a cross-sectional view taken along the line A-A of FIG.

* Explanation of symbols for main parts of the drawings

100: machine tool (boring machine) 102: main body

104: multi-stage shifting cylinder 106: main shaft

108: cylinder body 110: gear

112: installation hole 114: cylinder space

116a, 116b: step

118a, 118b, 118c, 118d: flow valve

120: dog 122: lock nut

124: neutral piston 126a, 126b: left, right piston

128: cover 130: bracket

132: plate

134a, 134b, 134c, 134d: each stage detection limit switch

136: shafter 138: oil bearing

140: solenoid valve 142: shifter

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

2 and 3 illustrate a preferred embodiment according to the present invention, the same configuration as in the prior art will not be described in detail, and only features of the present invention will be described.

As shown, both sides are formed to be opened on the installation hole 112 formed at a predetermined portion of the main body 102, but the cylinder space portion 114 is formed so that both inner diameter portions are stepped. The lower portion of the cylinder body 108 is formed by inserting a plurality of flow path valves 118a, 118b, 118c, 118d in communication with a predetermined portion of the cylinder space portion 114 formed inwardly. Is fastened and fastened, and the main shaft 106 is inserted into the cylinder space portion 114 formed in the cylinder body 108 so as to be movable by a predetermined distance to the left and right.

In addition, the main shaft 106 is inserted into the cylinder space 114 so as to be movable by a predetermined distance to the left and right, and the dog 120 is provided on the lock nut 122 at the stepped portion 116a formed at one side. It is fixedly installed by the unit, the neutral piston 124 is fixed to the center of the portion that is to be inserted into the cylinder space portion 114, the left side on both sides centering on the neutral piston 124 And right pistons 126a and 126b are integrally formed, and both sides of the cylinder space portion 114 opened to both sides in order to insert and connect the main shaft 106 to both sides of the cylinder space portion ( 114) The cover 128 is inserted into and fastened to the opened portion, and the gear 110 which rotates at a high speed end or a low speed end and a middle speed end is provided at a lower side.

On the other hand, the bracket 130 is fastened to the upper portion of the cover 128 that is fastened to the one side, the plate 130 is fastened to the bracket 130 is formed to be located on one side of the main shaft 106 is fastened It is fixed, and the plate 132 is formed to protrude downward so as to form a ground with the dog 120 which is integrally fixed to one side of the main shaft 106 when the main shaft 106 is moved left, right There are a plurality of stage detection limit switches 134a, 134b, 134c, and 134d, and one side of the plate 132 has a shaft 136 connected and fixed, and the main shaft 106 The oil bearing 138 is provided at one side of the main shaft 106 to prevent sag, as well as to achieve a smooth transfer, and the flow valves 118a, 118b, 118c, and ( 118d) includes solenoid valves that selectively change hydraulic flow Is 140, the connection configuration.

When the user selects to apply hydraulic pressure to the flow path valves 118a, 118b, 118c, and 118d, which are formed to communicate with a predetermined portion of the cylinder space 114, The solenoid valve 140 causes the hydraulic pressure to flow only in the direction intended by the user. When the user first rotates the main shaft 106 at a low speed, the third flow valve 118c and the fourth flow valve from the left side are operated. Hydraulic pressure is supplied to 118d. Then, the third flow valve 118c flows oil into the ground portion of the right piston 126b which is grounded with the inner diameter of the cylinder space portion 114, and is formed on the left side of the right piston 12b. The operation of moving the neutral piston 124 and the left piston 126a formed to be grounded on the left side of the neutral piston 124 until it comes into close contact with the cover 128 fastened to the left side by generating hydraulic pressure in the space portion. It is to be performed so that the main shaft 106 to the left to shift to the low speed stage. At this time, the fourth flow valve 118d generates hydraulic pressure in the space portion formed on the right side of the right piston 126b so that the right piston 126b is generated on the right side by the hydraulic pressure generated in the left space portion. To stop the movement.

On the other hand, the main shaft 106 to be moved to the left through such a process is the first end of each end limit switch 134a, 134b, which protrudes to the lower portion of the plate 132 is formed on the one side, The gear shifting to the low speed stage is completed by grounding the dog 120 grounded at the neutral stage sensing limit switch 134b to the low speed sensing limit switch 134a formed on the left side. This is to inform the user.

When the user applies the rotation to the main shaft 106 at a medium speed, the hydraulic pressure is supplied to the second flow path valve 118b and the fourth flow path valve 118d from the left side. Then, the second flow valve 118b flows oil into the ground portion of the left piston 126a which is grounded with the inner diameter of the cylinder space portion 114 so that the left piston 126a is fastened to the left side. Move until it is in close contact with 128, and after forming a certain space portion, generate hydraulic pressure in the space to perform the operation of moving the neutral piston 124 until it is in close contact with the right piston 126b formed on the right side. By moving the main shaft 106 a certain distance to the right to shift to the middle speed. At this time, the fourth flow valve 118d is the right side by the neutral piston 124 to move the hydraulic pressure from the left side to the right side by generating the hydraulic pressure in the space formed on the right side around the right piston 126b. This prevents the piston 126b from moving to the right.

On the other hand, the main shaft 106 to be moved to the right through such a process is each stage detection limit switch (134a), (134b), which protrudes to the lower part of the plate 132 is formed on the upper side of the initial stage, The gear shifting to the intermediate speed is completed by grounding the dog 120 grounded at the neutral detection limit switch 134b among the 134c and 134d to the intermediate speed detection limit switch 134c formed on the right side. This is to inform the user.

In addition, when the user rotates the main shaft 106 at high speed, the hydraulic pressure is supplied to the first flow path valve 118a and the second flow path valve 118b from the left side. Then, the first flow valve 118a generates hydraulic pressure in the space formed on the left side of the left piston 126a to support the left piston 126a from being moved from the right end to the left side, and the second flow valve The oil 118b flows oil into the ground portion of the left piston 126a which is grounded with the inner diameter of the cylinder space portion 114 to form a constant hydraulic space on the right side of the left piston 126b so that the neutral piston ( It not only moves the 124 to the right piston 126b formed on the right side but also moves the neutral piston 124 and the right piston 126b to the cover 128 fastened to the right side. It is to be able to shift the main shaft 106 to the right by a certain distance to shift the high speed. On the other hand, the main shaft 106 to be moved to the right through such a process is each stage detection limit switch (134a), (134b), which protrudes to the lower part of the plate 132 is formed on the upper side of the initial stage, The gear shifting to the high speed stage is completed by grounding the dog 120 grounded at the neutral stage sensing limit switch 134b to the high speed stage sensing limit switch 134d formed at the right end of 134c and 134d. This is to inform the user.

When the shift operation is to be completed, the hydraulic pressure is supplied to the first flow path valve 118a and the third flow path valve 118c from the left side. Then, the first flow valve 118a generates hydraulic pressure in the space formed on the left side of the left piston 126a to support the left piston 126a from being moved from the right end to the left side, and the third flow valve 118c flows oil into the ground portion of the right piston 126b which is grounded with the inner diameter of the cylinder space portion 114 to generate oil pressure in the space portion formed on the left side around the right piston 126b. To move the neutral piston 124 until it comes into close contact with the right side of the left piston 126a formed on the left side of the neutral piston 124, thereby moving the spindle 106 at any position. It is to be shifted to.

On the other hand, the main axis 106 to be moved through this process is the end of each detection limit switch 134a, 134b, (134c), which is formed to protrude to the lower part of the plate 132 is formed on the upper side A dog 120 grounded at a specific sensing limit switch of 134d is grounded to the neutral sensing limit switch 134b to inform the user that the gear shift is completed to the neutral stage.

Therefore, the present invention, which is configured and achieved in this way, can be used to freely deform and adjust the rotation of the main shaft to suit the characteristics of the workpiece, that is, the shape, size, processing margin, required precision, tool and processing method of the workpiece. It is possible to easily and properly achieve the processing of the workpiece, while achieving a high processing precision.

Therefore, as described above, the present invention installs a multi-stage shifting cylinder to convert the position of the gear used as the speed changer of the main shaft into positions of low speed, medium speed, high speed, and neutral depending on the selection. It can be used to change the rotation of the spindle freely according to the characteristics of the workpiece, that is, the shape, size, processing margin, required precision, tool and processing method, etc. In order to achieve this, it is possible to achieve high processing precision, and as a result, it is possible to improve the added value of the entire machine tool manufactured using the technology of the present invention, thereby improving the merchandise and reliability.

Claims (4)

For machine tools (bore-ring machines) equipped with a multi-stage shifting cylinder 104 that allows the position of the gear 110 to apply the rotational force to the main shaft 106 to be changed to the high end, the low end, and the neutral end. In the multi-stage variable speed cylinder structure of the spindle speed conversion gear, the position of the gear 110 used as the speed converter of the spindle 106 inside the machine tool 100 is selected according to the low speed, the medium speed, the high speed, and the neutral speed. A multistage shifting cylinder structure of a spindle speed conversion gear for a machine tool (boring machine), comprising: a multistage shifting cylinder (104) configured to be converted to a position such as a back. According to claim 1, The multi-stage shifting cylinder 104 is formed so that both sides are opened on the mounting hole 112 formed in a predetermined portion of the main body 102, both inner diameter portion is formed to be stepped () The cylinder space part 114 which is formed is formed, and the flow path valves 118a, 118b, 118c, and 118d which communicate with the predetermined part of the cylinder space part 114 formed inwardly in the lower part are formed The cylinder body 108, which is formed to be inserted several times, is fastened and fixed, and the main shaft 106 is inserted into the cylinder space portion 114 formed in the cylinder body 108 so as to be moved by a predetermined distance to the left and right. In addition, the main shaft 106, which is inserted into the cylinder space portion 114 so as to be movable by a predetermined distance to the left and right, has a dog 120 formed by a lock nut 122 at a stepped portion formed on one side thereof. It is fixedly installed integrally, the cylinder space ( A neutral piston 124 is fixed at the center of the portion to be inserted into and positioned at 114, and the left and right pistons 126a and 126b are integrally formed on both sides of the neutral piston 124 as a center. It is formed and provided, and both sides of the cylinder space portion 114 which is opened to both sides to insert and install the main shaft 106 to be inserted into the cylinder space portion 114 to seal the opened portion Caba 128 is provided, the main shaft for the machine tool (boring machine), characterized in that it comprises a gear 110 that rotates to the high speed or low speed and the intermediate speed and the neutral end to one side of the lower side Multi-speed cylinder structure of speed conversion gear. According to claim 1 or claim 2, The bracket 130 is fastened to the upper portion of the cover 128 is fastened to the one side, The bracket 130 is formed so as to be located on one side of the main shaft 106 The plate 132 is fastened and fastened, and the plate 132 forms a ground with the dog 120 which is integrally fixed to one side of the main shaft 106 when the main shaft 106 moves left and right. Each end limit switch (134a), (134b), (134c), (134d) is formed to protrude to the bottom so that the shaft () is connected to one side of the plate () is configured to be fixed Multi-stage variable speed cylinder structure of the spindle speed conversion gear for machine tools (boring machine), characterized in that. According to claim 1, wherein, one side of the main shaft is provided with an oil bearing 138 to prevent sag of the main shaft 106, as well as to facilitate the transfer, the flow valve 118a , (118b), (118c), (118d) is a multi-speed cylinder of the spindle speed conversion gear for the machine tool (boring machine), characterized in that the solenoid valve 140 for selectively changing the flow of hydraulic pressure is connected rescue.