KR200373521Y1 - A air pressure supplyling apparatus to the index table - Google Patents

Abstract

The present invention increases the work efficiency of the workpiece by helically arranging the pressure fluid passages of the distributor and the inner shaft so that the fluid supply hose is not twisted even when the housing is rotated, and each fluid supply passage and each index table can be connected independently. The present invention relates to a pressure fluid supply apparatus of an index table that can increase the index table as much as possible within an acceptable angle range.

The present invention is an index table pressure fluid supply device in a flexible processing system including a plurality of radially installed index table for dividing a workpiece, the plurality of first passages passing from the circumferential side to the upper side of the inner side is a predetermined pitch interval A pressure fluid distribution means which is formed to penetrate through and distributes the pressure fluid; An inner shaft rotatably installed on an upper side of the dispensing means, and having a plurality of second passages spirally formed after being machined in a vertical direction from a bottom surface thereof and penetrating in a circumferential side direction and communicating with each of the first passages respectively; An outer shaft fitted to an outer circumferential surface of the inner shaft and having a plurality of discharge guide holes communicating with the second passage at predetermined intervals; It is provided on the outer circumferential surface of the outer shaft, connected to a plurality of pressure fluid outlet on the outer circumference provides a pressure fluid supply device of the index table including a center housing formed with a pressure fluid outlet for supplying the pressure fluid to the pellet side of the rotary table.

Description

A air pressure supplyling apparatus to the index table

The present invention relates to a pressure fluid supply device for supplying a pressure fluid to a cylinder for rotating a table or fixing a workpiece located on a pellet of an index table used in a mass production work line. The present invention relates to a pressure fluid supply apparatus of an index table that can selectively fix and rotate a workpiece on an index table positioned at a station to improve machining efficiency and to quickly perform various machining operations on the workpiece.

In general, a flexible manufacturing system (Flexible Manufacturing System) has a plurality of stations for processing a variety of mechanical parts, each station is a system for machining the workpiece located in the position after rotating the index table to the area that needs to be processed.

The index table rotates the workpiece at precisely divided angles to effectively perform machining, assembly, transfer, packing, press work, as well as batch, continuous operations such as welding, riveting, winding, and testing machines in machine tools. By adjusting the work position of the workpiece. The index table has been proposed in various structures according to the driving method. Recently, an index table operated by a rack and a pinion method by pneumatic driving has been widely used as a function capable of exhibiting excellent functions in precision and performance during machining operations.

The flexible processing system includes stations S1 to S6 divided radially into six regions, as shown in Figs. An upper housing 105 provided with a worm 103 and a worm wheel 104 and having a hollow shaft 107 so as to rotate to areas requiring processing at the stations S1 to S6; An index table 106 for rotating the workpiece at the correct angle on the upper housing 105; A pellet (101) installed on the index table (106) to fix a work piece; It consists of a pressure fluid supply device (not shown) for supplying pressure fluid for rotating the index table 106 or clamping of the workpiece. One of the stations S1 to S6 is a standby station for loading / unloading a workpiece, and the other is a machining station for processing an allocated machining area of a workpiece fixed on the pellet 101 of the table.

Looking at the operation of the flexible machining system of the above configuration, first through the worm 103 and the worm wheel 104 of the rotational power transmission source to rotate the upper housing 105 to each station in the area that needs to be processed.

The operation of fixing and rotating the workpiece is precisely driven by the index table 106 installed in the upper housing 105. The driving mechanism provides a pressure fluid supply device for supplying a pressure fluid to the index table 106. After connecting and clamping the workpiece on the pellet 101, the work position (WP) is to be divided by the rotation of the correct angle to make the division work.

The pressure fluid supply device is installed in the hollow shaft 107 which is the rotation center of the upper housing 105 and is connected to each index table 106 radially installed through the fluid supply hose 102. Due to this structure, the fluid supply hose 102 in the index table 106 supplied from the hollow shaft 107 which is the center of rotation of the upper housing 105 is twisted by the rotational movement of the upper housing 105. This adversely affects the smooth supply of pressure fluids. Due to the non-uniform supply of pressure fluid, an error occurs in the rotation of the index table 106 or in the movement of the workpiece, which causes a machining error in the machining station.

In addition, in the related art, since the twist of the fluid supply hose 102 has to be minimized, there is a restriction in increasing the index table 106, and the power loss and the work efficiency are lowered because the back transfer process of the upper housing 105 is required. There is a problem.

In addition, the conventional pressure fluid supply device is configured to simultaneously supply pressure fluids to the plurality of radially installed index tables 106 simultaneously, and thus it is not possible to selectively process the workpieces individually at various angles. In a small-volume production system, the main cutting work efficiency is bad.

Therefore, the present invention is proposed to solve the above problems, and the spirally arranged pressure fluid passages of the distributor and the inner shaft so as not to twist the fluid supply hose even when the housing is rotated to increase the work efficiency of the workpiece. It is an object of the present invention to provide a pressure fluid supply device of an index table that can increase the index table as much as possible within the allowable angle range by allowing each fluid supply passage and each index table to be independently connected.

In addition, the present invention can selectively process only the workpiece to be processed by selectively providing a pressure fluid to the pellet on the index table positioned at each processing station, the pressure of the index table that can perform the machining process at various angles Another object is to provide a fluid supply device.

1 is a plan view schematically showing the overall configuration of a general flexible processing system.

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

Figure 3 is an exploded perspective view showing an embodiment configuration of the pressure fluid supply device of the index table according to the present invention.

Figure 4 is an assembled cross-sectional view of the pressure fluid supply device of the index table according to the present invention.

5 is a detailed configuration diagram of the distributor according to the present invention

Figure 6 is a detailed configuration of the inner shaft which is the main part of the present invention.

7 is a detailed configuration diagram of the outer shaft which is the main part of the present invention.

Figure 8 is a detailed configuration of the center housing which is the main part of the present invention.

* Explanation of symbols for the main parts of the drawings

1: stage base 2: distributor

3: fluid injection nozzle 4: inner shaft

5: first bearing 6: guide groove

7: outer shaft 8: center housing

9: fluid supply nozzle 10: second bearing

11: fitting 12: rubber sealing

In order to achieve the above object, the present invention provides a pressure fluid supplying device of an index table in a flexible machining system including a plurality of radially installed index tables for dividing a workpiece, and a plurality of products communicating from the circumferential side to an inner upper side. A pressure fluid distributing means formed to penetrate one passage at a predetermined pitch interval to distribute and supply the pressure fluid; It is rotatably installed on the upper side of the pressure fluid distribution means, and after processing in the vertical direction from the bottom surface, the plurality of second passages which penetrate in the circumferential side direction and communicate with each of the first passages, respectively, spirally formed shaft; An outer shaft fitted to an outer circumferential surface of the inner shaft and having a plurality of discharge guide holes communicating with the second passage at predetermined intervals; It is fitted to the outer circumferential surface of the outer shaft, and connected to a plurality of pressure fluid outlet on the outer circumference provides a pressure fluid supply apparatus of the index table including a center housing formed with a pressure fluid outlet for supplying the pressure fluid to the pellet side of the index table.

Hereinafter, with reference to the accompanying Figures 3 to 8 will be described an embodiment of the present invention in detail.

The pressure fluid supply apparatus of the index table according to the present invention does not twist the fluid supply hose even when the workpiece is rotated to the area that needs to be processed, and selectively supplies pressure fluid to pellets on the index table positioned at each processing station. Only the workpiece to be selected can be processed.

Pressure fluid supply apparatus according to an embodiment of the present invention, as shown in Figures 3 and 4, the stage base (1) of a predetermined size having a support function; The distributor 2 is mounted on the upper surface of the stage base 1 and is formed to penetrate a plurality of first passages 2a extending from the circumferential side to the inner upper side at predetermined pitch intervals to distribute and supply pressure fluid. .

As shown in Fig. 5, the first passage 2a of the distributor 2 is machined horizontally from the circumferential side toward the center point and then penetrates in the vertical direction of the upper surface. Twelve first passages 2a are arranged at equal intervals of 30 degrees.

A fluid injection nozzle 3 for injecting pressure air from the outside is connected to the inlet of the first passage 2a of the distributor 2.

An inner shaft 4 is coupled to an upper side of the distributor 2, and a first bearing 5 is inserted between the distributor 2 and the inner shaft 4 so that the inner shaft 4 is disposed on the distributor 2. It becomes rotatable.

As shown in Fig. 6, the inner shaft 4 is machined from the bottom in the vertical direction, and then a plurality of second passages 4a are formed, which penetrate in the circumferential side direction. The second passage (2a) formed on the circumferential side of the inner shaft 4 is processed in a helical shape, the guide groove (6) stepped at a predetermined interval is formed on the circumferential surface on which each of the second passage (4a) is formed and pressure Provide a path of air movement.

The second passages 4a respectively correspond to the first passages 2a. Therefore, each hole spacing of the second passage 4a helically located on the circumferential surface of the inner shaft 4 is made equal to the pitch spacing of the first passage 2a.

As shown in Fig. 7, the outer shaft 7 is fitted to the outer circumferential surface of the inner shaft 4. The outer shaft 7 is formed so that a plurality of intermediate holes 7a penetrate outwardly in a direction perpendicular to the inner circumferential surface thereof, and the pressure air discharged from the second passage 4a is guided through the guide groove 6 so that the It is discharged to the middle hole (7a) side.

As shown in FIG. 8, the center housing 8 is formed on the outer circumferential surface of the outer shaft 7 in a spiral shape at the same pitch interval as the second passage 4a of the inner shaft 4 and the outlet 8a penetrates. ) Is fitted. The center housing 8 is fitted to the hollow portion of a known upper housing (not shown), and the fluid supply nozzle 9 for supplying the pressure air to the index table for fixing and dividing the workpiece to be processed is discharged through the outlet. Connected to (8a). Like the first bearing 5, a second bearing 10 is installed at the upper boundary of the inner shaft 4 and the housing 8 so that the inner shaft 4 is disposed between the distributor 2 and the center housing 8. Rotation is smooth.

In the embodiment of the present invention, the fluid injection nozzle 3 and the fluid supply nozzle 9 are connected to the pipes of the first and second passages 2a and 4a through 90 ° fittings 11, respectively. Therefore, the fluid injection nozzle 3 and the fluid supply nozzle 9 are freely rotatable by the fitting 11, so that the fluid transfer hose can be flexibly connected.

A coupling portion of the distributor 2 and the inner shaft 4 is provided with a rubber seal 12 for sealing.

Referring to the working state of the present invention configured as described above are as follows.

First, the inner shaft 4, the outer shaft 7 and the center housing 8 are inserted into each other and assembled so as to stand upright on the distributor 2, and the upper and lower portions of the distributor 2 and the center housing 8, respectively. The inner shaft 4 is assembled in a rotatable state by incorporating the first and second bearings 5 and 10.

In the assembled state as described above, the center housing 8 is fitted to the hollow portion of the upper housing. The upper housing, which rotates through the worm and the worm wheel, which are the rotational power transmission sources, is rotated and positioned to each station in the area requiring processing. The index table radially connected to the upper housing is connected to the fluid supply nozzle 9 exposed to the outer circumferential surface of the center housing 8 through a fluid transfer hose (not shown).

In addition, the twelve fluid injection nozzles 3 exposed to the outside of the distributor 2 are individually connected to the external fluid transfer hose to control the fluid supply. That is, it is controlled so that the fluid can be supplied only to the selected nozzle side among the twelve fluid injection nozzles 3. Likewise, the fluid supply nozzles 9 exposed to the outside of the center housing 8 are individually connected to the index table via the fluid transfer hose. Therefore, the pressure air can be provided only to the corresponding index table of the area requiring processing in each station. For example, when pressure air flows into the first fluid injection nozzle 3, the first passage 2a of the distributor 2 passes through the first passage 2a of the inner shaft 4. Done. The pressure fluid passing through the first second passage 4a moves in the guide groove 6 and is discharged to the first fluid supply nozzle 9 through the middle hole 7a of the outer shaft, and then pressurized to the index table side connected thereto. The air arrives and is used as a power source to fix the workpiece to pellets or to provide a cylinder to rotate the index table.

Since the twelve fluid injection nozzles 3 arranged at 30 ° intervals as described above and the twelve fluid supply nozzles 9 connected to each other independently convey pressure air, the pressure is collectively applied to the entire index table. It is possible to provide air, and also to provide pressure air only to the workpiece side of the region to be processed to perform various processing operations.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical idea of the present invention. It will be obvious to those with

As described above, according to the present invention, since the fluid supply nozzles are spirally exposed on the outer surface of the center housing, and these nozzles are individually connected to the index table, even if the upper housing rotates to each station, the fluid supply hose is There is no worry of twisting, so the upper housing can be rotated in the forward or reverse direction continuously, and the index table can be increased to correspond to the nozzles installed at the allowable pitch interval, thereby increasing the processing efficiency. have.

In addition, the present invention, even if the operator wants to process only the workpiece located in the desired index table, by selecting the corresponding index table to provide a pressure air, it is possible to selectively process the workpiece, and to perform the machining process from various angles There are other effects that can be.

Claims (8)

A pressure fluid supply apparatus of an index table in a flexible machining system including a plurality of radially installed index tables for dividing a workpiece, A pressure fluid distributing means configured to penetrate a plurality of first passages passing from the circumferential side to an inner upper side at predetermined pitch intervals to distribute and supply the pressure fluid; It is rotatably installed on the upper side of the pressure fluid distribution means, and after processing in the vertical direction from the bottom surface, the plurality of second passages which penetrate in the circumferential side direction and communicate with each of the first passages, respectively, spirally formed shaft; An outer shaft fitted to an outer circumferential surface of the inner shaft and having a plurality of discharge guide holes communicating with the second passage at predetermined intervals; A center housing fitted to an outer circumferential surface of the outer shaft and having a pressure fluid discharge port connected to a plurality of pressure fluid outlets on an outer circumferential surface thereof to supply pressure fluid to the pellet side of the index table; Pressure fluid supply device of the index table comprising a. The method of claim 1, And the inner shaft further includes a guide groove formed in a circumferential direction at a portion in which a plurality of second passages are helically located. The method of claim 1, And a bearing provided at a coupling portion between the input fluid distributing means and the inner shaft and a boundary portion between the inner shaft and the center housing to allow the inner shaft to rotate smoothly. The method according to any one of claims 1 to 3, And a pressure fluid nozzle for injecting pressure air from the outside to the inlet of the first passage of the distribution means and the pressure fluid outlet of the center housing. The method of claim 4, wherein The pressure fluid nozzle is a pressure fluid supply device of the index table further comprises a rotatable fitting. The method according to any one of claims 1 to 3, And the first passage of the pressure fluid distributing means and the second passage of the inner shaft are arranged at equal intervals of 30 degrees. The method according to any one of claims 1 to 3, And the first and second passages communicate with each other individually. The method of claim 1, The pressure fluid supply device of the index table further comprises a rubber seal provided in the coupling portion of the pressure fluid distribution means and the inner shaft to seal.