Common object supply device for rotary tool holder of machine tool turret

Abstract

According to the invention, public objects supplied through a first public material flow path of a turning tool holder are also supplied to a second public material flow path of an adjacent rotating tool holder through a communication unit by a docking device; thus, there is no need to provide complicated hydraulic lines, pneumatic lines, and connectors for receiving utility from the docking device behind the rotating tool holder. Furthermore, the rear size of the rotary tool holder is minimized, so that even if the rotary tool holder is mounted on the turret, the turret rotates, the rotary tool holder does not interfere with a docking device at the rear. As a result, the rotating tool holder for which the utility needs to be supplied can be used even in the turret provided with the docking device.

Description

Technical Field

[0001] The present invention relates to a device for supplying utilities including hydraulic pressure and pneumatic pressure to a rotary tool post mounted on a turret of a machine tool, and more particularly, to a turret structure of a machine tool for supplying utilities including hydraulic pressure and pneumatic pressure to the rotary tool post. Background Art

[0002] In a machine tool such as a lathe, a plurality of tool rests are rotatably arranged along the circumferential direction on a cylindrical turret. In each tool rest, a plurality of tools are inserted and fixed for use according to the type of workpiece machining.

[0003] Furthermore, the tool inserted into the tool holder can be automatically changed among a plurality of tools stored in a tool magazine by an automatic tool changer (ATC: Auto Tool Change).

[0004] On the other hand, a clamping cylinder for clamping the inserted tool is provided inside the tool holder. The clamping cylinder is provided with hydraulic pipelines for supplying and discharging hydraulic pressure, pneumatic pipelines for removing foreign objects from the tool insertion part, and sensing pneumatic pipelines for confirming whether the tool is installed. These hydraulic pipelines and pneumatic pipelines are connected to the rear of the tool holder.

[0005] In addition, a tool replacement position is set on one side of the circumferential direction of the non-rotating turret body, and a docking device is provided that can be connected to the hydraulic pipeline and the pneumatic pipeline of the tool holder aligned with the tool replacement position.

[0006] In the docking device, when the tool holder to be replaced is aligned with the tool replacement position, the docking cylinder moves forward, and the hydraulic pipeline and pneumatic pipeline of the docking device are connected to the hydraulic pipeline and pneumatic pipeline of the tool holder through a connector to supply hydraulic pressure and pneumatic pressure to the tool holder.

[0007] However, although this structure is feasible in a turret that only uses a turning tool holder with a relatively simple internal structure of the tool holder, when it is used with a rotating tool holder such as a milling tool that has a complex internal structure such as bevel gears and bearings for rotating the tool in addition to the tool clamping unit, and the rotating tool is to be replaced by an automatic tool changing device, due to the small internal space, it is impossible to set complex hydraulic pipelines that can be connected to the docking device and connectors that connect the pneumatic pipelines to them behind the tool holder, and thus it cannot be used.

[0008] On the other hand, Patent Document 1, as a prior art, describes a structure for driving a rotating tool in a turret. However, Patent Document 1 only relates to a structure for driving a rotating tool in a turret. This structure cannot be applied to a rotary tool holder, such as the present invention, which requires the supply of utilities such as hydraulic and pneumatic pressure and has a complex internal structure including a tool clamping unit, bevel gears, and bearings.

[0009] In addition, Patent Document 2 is a device for confirming the clamping of a milling spindle. When a turning tool is installed on a milling spindle equipped with a rotating tool, a pressure sensing unit for sensing the clamping pressure is provided in a hydraulic pipeline connected to a combined hydraulic chamber, thereby including a clamping or loosening confirmation device. Patent Document 2 also relates to a tool clamping device for a spindle other than a turret, which is different from the structure of a rotating tool holder installed on a turret in the present invention.

[0010] In addition, Patent Document 3 relates to an internal structure of a tool holder having an automatic clamping and releasing function that receives rotational power and rotates to automatically clamp and release the tool, and cannot be applied to a structure that requires the supply of utilities such as hydraulic and pneumatic pressure as in the present invention.

[0011] Furthermore, Patent Document 4 relates to a turret tool post for a machine tool, comprising: a driving portion for providing rotational power to a turret housing a plurality of tools; a rotating portion coupled to an optional portion disposed on a portion of the turret so as to rotate in the same manner as the turret; and a fixing portion for clamping or releasing the rotating portion to supply or cut off the pressure required to drive the optional portion. As previously mentioned as a problem of the prior art, Patent Document 4 relates to the structure of a machine tool employing a turning tool post with a relatively simple internal structure. However, a rotary tool post such as the present invention, which requires the supply of utilities such as hydraulic and pneumatic pressure and has a complex internal structure including a tool clamping unit, bevel gears, and bearings, cannot be used in a turret in a machine tool such as a lathe employing an automatic tool changer due to the limited internal space and insufficient external space behind the tool post for installing hydraulic or pneumatic lines and connectors for connection to a docking device.

[0012] Prior art literature

[0013] Patent Literature

[0014] Patent Document 1: Korean Patent Publication No. 10-2000-0015425

[0015] Patent Document 2: Korean Patent Publication No. 10-2004-0059285

[0016] Patent Document 3: Korean Patent Publication No. 10-2015-0025447

[0017] Patent Document 4: Korean Patent Publication No. 10-2019-0083092 Summary of the Invention

[0018] Technical issues

[0019] One object of the present invention, which aims to solve the above-mentioned problems, is to enable the use of a rotary tool post utilizing utilities such as hydraulic pressure and pneumatic pressure in a turret of a machine tool. Another object of the present invention is to minimize the rear size of the rotary tool post by supplying hydraulic pressure and pneumatic pressure to the rotary tool post through an adjacent turning tool post and the interior of the turret.

[0020] Technical Solution

[0021] In order to solve the above-mentioned problems, the present invention provides a common material supply device for a rotary tool holder of a machine tool turret, wherein the turret is provided with a plurality of tool holders arranged along the circumferential direction of the turret, and the common material supply device for the rotary tool holder of the machine tool turret comprises: a docking device, which is combined with the main body of the turret and internally includes a common flow path capable of supplying at least one of the common materials including hydraulic pressure, air pressure, and cutting oil to the rear of the tool holder, and a driver for moving the common flow path; more than one tool holder among the plurality of tool holders has a first common flow path formed therein, and the first common flow path is aligned with the docking device The utility model extends rearward in a manner capable of receiving the utility object supplied from the docking device when at a predetermined rear position; a rotating tool holder is arranged on the turret adjacent to the tool holder having the first utility flow path formed therein in a circumferential direction, and has a second utility flow path formed therein, which is capable of receiving the utility object from the first utility flow path of the tool holder having the first utility flow path formed therein; and a connecting unit is arranged between the tool holder having the first utility flow path formed therein and the rotating tool holder, and has an internal connecting flow path for connecting the first utility flow path and the second utility flow path.

[0022] As a preferred embodiment, it is characterized in that the driver of the docking device of the utility supply device of the rotary tool holder of the machine tool turret is a docking cylinder that moves the utility flow path in the front-rear direction.

[0023] As a preferred embodiment, it is characterized in that the tool holder of the rotary tool holder common material supply device of the machine tool turret, in which the first common material flow path is formed, is a turning tool holder.

[0024] As a preferred embodiment, it is characterized in that the first common flow path of the common material supply device of the rotating tool holder of the machine tool turret is formed by extending to the upper attachment surface of the turret on which the tool holder having the first common flow path formed therein is provided, and the second common flow path is formed by extending to the upper attachment surface of the turret on which the rotating tool holder is provided.

[0025] As a preferred embodiment, it is characterized in that the first utility flow path of the utility supply device of the rotating tool holder of the machine tool turret includes: a first hydraulic pipeline, which supplies and discharges hydraulic pressure; a first pneumatic pipeline, which sprays compressed air to the tool insertion part; a first sensing pipeline, which sprays compressed air in a manner that can confirm whether the tool is inserted normally; and a first cutting oil pipeline, which sprays cutting oil to the front of the turning tool holder.

[0026] As a preferred embodiment, it is characterized in that the second common flow path of the common material supply device of the rotating tool holder of the machine tool turret includes: a second hydraulic pipeline, which can be communicated with the first hydraulic pipeline of the first common flow path; a second pneumatic pipeline, which can be communicated with the first pneumatic pipeline of the first common flow path; a second sensing pipeline, which can be communicated with the first sensing line of the first common flow path; and a second cutting oil pipeline, which can be communicated with the first cutting oil pipeline of the first common flow path.

[0027] As a preferred embodiment, it is characterized in that the connecting unit of the common material supply device of the rotary tool post of the machine tool turret is a third common flow path formed inside the turret in a manner that connects the first common flow path and the second common flow path.

[0028] As a preferred embodiment, it is characterized in that the third common flow path of the rotating tool holder common material supply device of the machine tool turret includes: a third hydraulic pipeline, which connects the first hydraulic pipeline of the first common flow path and the second hydraulic pipeline of the second common flow path; a third pneumatic pipeline, which connects the first pneumatic pipeline of the first common flow path and the second pneumatic pipeline of the second common flow path; a third sensing pipeline, which connects the first sensing line of the first common flow path and the second sensing line of the second common flow path; and a third cutting oil pipeline, which connects the first cutting oil line of the first common flow path and the second cutting oil line of the second common flow path.

[0029] As a preferred embodiment, it is characterized in that the first common flow path of the common material supply device for the rotating tool holder of the machine tool turret is formed by extending in the direction of the adjacent rotating tool holder, and the second common flow path is formed by extending in the direction of the tool holder in which the first common flow path is formed, and a connecting block having a connecting flow path inside is provided as the connecting unit between the tool holder in which the first common flow path is formed and the rotating tool holder in such a manner that the first common flow path and the second common flow path are connected to each other.

[0030] As a preferred embodiment, it is characterized in that the tool holder with the first common flow path formed inside of the rotary tool holder of the machine tool turret's common material supply device and the rotary tool holder form an integrated body, and the connecting unit is formed by extending the first common flow path toward the side of the rotary tool holder, and extending the second common flow path toward the side of the tool holder with the first common flow path formed inside, so that the first common flow path and the second common flow path are connected to each other.

[0031] As a preferred embodiment, it is characterized in that the rotary tool holder of the rotary tool holder utility supply device of the machine tool turret is a milling tool holder which is internally provided with a power transmission mechanism for transmitting rotational force.

[0032] As a preferred embodiment, the rear end of the tool holder of the machine tool turret's rotary tool holder public material supply device in which the first public flow path is formed and the front end of the docking device are provided with connectors for connecting or separating the public flow path of the docking device and the first public flow path of the tool holder.

[0033] Effects of the Invention

[0034] The present invention enables the use of a rotary tool holder in a machine tool turret utilizing utilities such as hydraulic pressure, pneumatic pressure, etc.

[0035] The present invention can minimize the rear size of the rotary tool post by supplying hydraulic pressure and air pressure to the rotary tool post inside the tool post and the turret, in which adjacent first common flow paths are formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a perspective view of a turret in which a turning tool post and a rotating tool post are installed together according to an embodiment of the present invention.

[0037] Figure 2 It is a perspective view of a rotary tool holder according to an embodiment of the present invention.

[0038] Figure 3 is a partial plan view of an upper attachment surface of a turret to which a rotary tool post according to an embodiment of the present invention is attached.

[0039] Figure 4 It is a three-dimensional view of an embodiment of the present invention in which a docking device is provided in a turret.

[0040] Figure 5 This is a partial perspective view of the turret showing a state in which the butting device according to the embodiment of the present invention is separated from the turning tool holder.

[0041] Figure 6 This is a partial perspective view of the turret showing a state in which a docking device and a turning tool holder according to an embodiment of the present invention are connected.

[0042] Figure 7 is a cross-sectional view of a connector for connecting a turning tool holder to a utility line of a docking device according to an embodiment of the present invention.

[0043] Figure 8 is a perspective view of utility lines formed in a turning tool holder and a turret body according to an embodiment of the present invention.

[0044] Figure 9 It is a schematic diagram of utility lines communicating with the rotating tool post through the turning tool post and the turret body according to an embodiment of the present invention.

[0045] Figure 10 This is a working state diagram of supplying common objects to the rotating tool holder through the turning tool holder and the turret body according to an embodiment of the present invention.

[0046] Figure 11 This is a working state diagram of another embodiment of the present invention in which a connecting block is provided between the turning tool holder and the rotating tool holder to supply common objects from the turning tool holder to the rotating tool holder.

[0047] Reference numerals

[0048] 10: Turret, 11: Turret body, 20: Tool holder, 21: Tool, 22: Turning tool holder, 23: Rotating tool holder, 30: Docking device, 31: Docking cylinder, 32: Connector, 33: Plug, 34: Socket, 40: First public logistics path, 41: First hydraulic pipeline, 42: First pneumatic pipeline, 43: First sensing pipeline, 44: First cutting oil pipeline, 50: Second public logistics path, 51: Second hydraulic pipeline, 52: Second pneumatic pipeline, 53: Second sensing pipeline, 54: Second cutting oil pipeline, 60: Third public logistics path, 61: Third hydraulic pipeline, 62: Third pneumatic pipeline, 63: Third sensing pipeline, 64: Third cutting oil pipeline, 65: Connecting block. DETAILED DESCRIPTION

[0049] Refer to the following Figures 1 to 11 Preferred embodiments of the present invention will be described.

[0050] Reference Figures 1 to 6The machine tool of the present invention comprises multiple tool holders 20 rotatably arranged along the circumference of a cylindrical turret 10. A variety of tools 21 are inserted and fixed to each tool holder 20, and the appropriate tool 21 is selected for use according to the type of workpiece being machined. The tools 21 include turning tools 21A and rotating tools 21B. In the following text, unless otherwise specified, these tools are referred to simply as tools 21.

[0051] Furthermore, the plurality of tool rests 20 are divided into a turning tool rest 22 for mounting a turning tool 21A and a rotating tool rest 23 for mounting a rotating tool 21B. The rotating tool rest 23 is provided adjacent to the turning tool rest 22 in the circumferential direction on the turret 10 .

[0052] In the following embodiments, the turning tool holder 22 is not necessarily a tool holder for mounting the turning tool 21A. As a tool holder having the first common flow path 40 formed therein, it may be a tool holder for other processing purposes such as the non-rotating tool holder 23, or a tool holder-shaped block having the first common flow path 40 formed therein (see Figure 8 ).

[0053] In this embodiment, a rotary tool 21B such as a milling tool, a tap, or a drill is inserted at the front end of the rotary tool holder 23, and a power transmission mechanism such as a gear device and bearings for rotating the rotary tool 21B are provided inside. In this embodiment, the rotary tool holder 23 includes a milling tool holder.

[0054] On the other hand, a tool magazine (not shown) for storing a plurality of tools 21 and an automatic tool changing device (not shown) for changing the tools 21 between the tool magazine and the tool holder 20 are provided at a position adjacent to the turret 10, so as to perform automatic tool changing operations of inserting the tools 21 stored in the tool magazine into the turning tool holder 22 or the rotating tool holder 23 according to the type of processing operation on the workpiece, and removing the tools 21 inserted into the turning tool holder 22 or the rotating tool holder 23 and storing them in the tool magazine.

[0055] In addition, a docking device 30 is provided in the turret body 11 on one side of the circumferential direction of the turret 10. The docking device 30 faces the rear of the tool holder 20 and includes a common flow path inside that can supply common items including hydraulic pressure, pneumatic pressure, and cutting oil to the rear of the tool holder 20, and a drive that enables the common flow path to be moved in a manner connected to the rear of the tool holder 20.

[0056] Preferably, the driver is a docking cylinder 31 that moves forward and backward so that the common flow path can be connected to the rear of the tool holder 20 .

[0057] A first utility flow path 40 is provided inside the turning tool post 22 and extends rearward so as to receive utilities such as hydraulic pressure, air pressure, and cutting oil supplied from the utility flow path of the docking device 30 .

[0058] like Figure 8 As shown, the first common flow path 40 includes: a first hydraulic pipeline 41, which supplies and discharges hydraulic pressure to a clamping cylinder (not shown) that clamps the tool 21 inserted into the turning tool holder 22; a first pneumatic pipeline 42, which sprays compressed air into the tool insertion portion in order to remove foreign matter such as chips when the tool 21 is inserted; a first sensing line 43, which sprays compressed air in a manner that can confirm whether the tool 21 is inserted normally by detecting the pressure; and a first cutting oil pipeline 44, which sprays cutting oil into the front processing part of the turning tool holder 22.

[0059] On the other hand, as another embodiment, the first common flow path 40 can be set up by omitting one or more of the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43, and the first cutting oil pipeline 44 according to the type and function of the tool 21 inserted into the turning tool holder 22.

[0060] On the other hand, between the rear end of the first common flow path 40 of the turning tool holder 22, which includes a first hydraulic pipeline 41, a first air pressure pipeline 42, a first sensing pipeline 43 and a first cutting oil pipeline 44, and the front end of the docking device 30 arranged accordingly, a plurality of connectors 32 consisting of plugs 33 and sockets 34 are arranged, which are connected to each other when connected to the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44 of the first common flow path 40, and are disconnected from each other when separated from the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44.

[0061] On the other hand, refer to Figure 7 Each of the connectors 32 includes a plug 33 and a socket 34 for connecting or disconnecting the flow of utilities such as hydraulic or pneumatic pressure, cutting oil, etc. The plug 33 and the socket 34 are separately arranged at the front end of the first common flow path 40 behind the turning tool holder 22 and the front end of the common flow path of the docking device 30. When the turning tool holder 22 is aligned with the front position of the docking device 30, the docking cylinder 31 of the docking device 30 moves forward to connect the plug 33 and the socket 34, thereby supplying utilities from the docking device 30 to the first common flow path 40 of the turning tool holder 22.

[0062] Each of the connectors 32 includes an O-ring or the like to form a liquid-tight structure to prevent leakage of hydraulic pressure, pneumatic pressure, or cutting oil when the plug 33 and the socket 34 are connected to or separated from each other.

[0063] As another embodiment, the connector 32 does not necessarily need to be composed of the plug 33 and the socket 34, and may be formed into a liquid-tight structure that prevents leakage of utilities such as hydraulic pressure, pneumatic pressure, and cutting oil when connected or disconnected.

[0064] On the other hand, refer to Figures 8 and 9 The first common flow path 40 of the turning tool holder 22, which includes a first hydraulic pipeline 41, a first air pressure pipeline 42, a first sensing pipeline 43 and a first cutting oil pipeline 44, extends to the upper attachment surfaces 10a and 10b of the turret 10 where the turning tool holder 22 and the rotating tool holder 23 are respectively set.

[0065] Preferably, the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43, and the first cutting oil pipeline 44 of the first utility flow path 40 extending to the attachment surface 10a of the turret 10 are formed to extend to the lower part of the turning tool holder 22 and connect to the upper part of the attachment surface of the turning tool holder 22 of the turret 10.

[0066] In addition, a second common flow path 50 is formed inside the rotating tool holder 23, which is composed of a second hydraulic pipeline 51, a second pneumatic pipeline 52, a second sensing pipeline 53 and a second cutting oil pipeline 54 corresponding to the first hydraulic pipeline 41, the first pneumatic pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44 respectively constituting the first common flow path 40 of the turning tool holder 22, and the inlet of the second common flow path 50 extends to the attachment surface 10b of the upper rotating tool holder 23 of the turret 10 to which the rotating tool holder 23 is attached.

[0067] On the other hand, the turning tool post 22 and the rotary tool post 23 are pressed and tightly mounted on the upper attachment surfaces 10a and 10b of the turret 10 by means of press-fastening means such as bolts, thereby more reliably preventing leakage of utilities such as hydraulic or compressed air and cutting oil.

[0068] In addition, a third common flow path 60 including a third hydraulic pipeline 61, a third air pressure pipeline 62, a third sensing pipeline 63 and a third cutting oil pipeline 64 is formed inside the turret 10 on which the rotating tool holder 23 adjacent to the turning tool holder 22 is installed, as a connecting unit forming an internal connecting flow path that connects the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44 constituting the first common flow path 40 of the turning tool holder 22 with the second hydraulic pipeline 51, the second air pressure pipeline 52, the second sensing pipeline 53 and the second cutting oil pipeline 54 constituting the second common flow path 50 of the rotating tool holder 23.

[0069] On the other hand, an O-ring (not shown) for preventing leakage of common items including hydraulic or compressed air and cutting oil is provided at the connection portion between the first hydraulic line 41, the first air pressure line 42, the first sensing line 43 and the first cutting oil line 44 of the first common flow path 40 of the turning tool holder 22 connected to the third hydraulic line 61, the third air pressure line 62, the third sensing line 63 and the third cutting oil line 64 of the third common flow path 60 forming the turret 10 and the second hydraulic line 51, the second air pressure line 52, the second sensing line 53 and the second cutting oil line 54 of the second common flow path 50 forming the rotating tool holder 23.

[0070] On the other hand, as another embodiment, multiple pairs of turning tool holders 22 and rotating tool holders 23 formed as described above are arranged in the turret 10, and the third hydraulic pipeline 61, third air pressure pipeline 62, third sensing pipeline 63 and third cutting oil pipeline 64 forming the third common flow path 60 are respectively arranged inside the turret 10 where the turning tool holders 22 and the rotating tool holders 23 are provided as connecting units. By respectively connecting the first hydraulic pipeline 41, first air pressure pipeline 42, first sensing pipeline 43 and first cutting oil pipeline 44 constituting the first common flow path 40 of the turning tool holder 22 with the second hydraulic pipeline 51, second air pressure pipeline 52, second sensing pipeline 53 and second cutting oil pipeline 54 constituting the second common flow path 50 of the rotating tool holder 23, multiple rotating tool holders 23 can be expanded and arranged in the turret 10.

[0071] Reference Figure 10As for the action process of the present invention as constituted by the above-mentioned embodiment, when the turning tool holder 22 set at a position adjacent to the rotating tool holder 23 reaches a position aligned with the docking device 30, the docking cylinder 31 advances, so that one side of the connector 32 at the front end forming the common flow path including hydraulic pressure, air pressure, and cutting oil is connected to the other side of the connector 32 set at the rear end of the turning tool holder 22, so that the common materials supplied to the docking device 30 are supplied to the first common flow path 40 of the turning tool holder 22, and the common materials including hydraulic pressure, air pressure, and cutting oil supplied to the turning tool holder 22 are supplied to the second common flow path 50 of the adjacent rotating tool holder 23 through the third common flow path 60 inside the turret 10 as a communication unit.

[0072] The utility supplied to the rotating tool holder 23 is used to rotatably clamp the tool 21 of the rotating tool holder 23 through hydraulic pressure. Foreign matter in the insertion part of the tool 21 can be removed by air pressure. At the same time, air pressure is used to detect whether the tool 21 is properly installed in the tool insertion part, and cutting oil can be sprayed to the processing part in front of the tool 21.

[0073] On the other hand, as another embodiment of the present invention, Figure 11 As shown, the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44 constituting the first common flow path 40 formed inside the turning tool holder 22 are respectively extended in the direction of the adjacent rotating tool holder 23, and the second hydraulic pipeline 51, the second air pressure pipeline 52, the second sensing pipeline 53 and the second cutting oil pipeline 54 forming the second common flow path 50 of the rotating tool holder 23 are extended in the direction of the turning tool holder 22, and a connecting unit is provided between the turning tool holder 22 and the adjacent rotating tool holder 23 to connect the first common flow path 40 of the turning tool holder 22 and the second common flow path 50 of the rotating tool holder 23 to each other.

[0074] The communication unit is composed of a connecting block 65 tightly fixed between the rotating tool holder 23 and the turning tool holder 22 by a fastening unit (not shown). The connecting block 65 has a connecting flow path inside so that the common material supplied to the first common flow path 40 of the turning tool holder 22 can be supplied to the second common flow path 50 of the adjacent rotating tool holder 23 through the docking device 30.

[0075] In addition, as another embodiment of the present invention, the turning tool holder 22 and the rotating tool holder 23 are constructed as an integrated body, and as a connecting unit for the first common flow path 40 of the turning tool holder 22 and the second common flow path 50 of the rotating tool holder 23, the first hydraulic pipeline 41, the first air pressure pipeline 42, the first sensing pipeline 43 and the first cutting oil pipeline 44 of the first common flow path 40 inside the turning tool holder 22 are extended toward the adjacent rotating tool holder 23 on the side, and the second hydraulic pipeline 51, the second air pressure pipeline 52, the second sensing pipeline 53 and the second cutting oil pipeline 54 of the second common flow path 50 of the rotating tool holder 23 are extended toward the turning tool holder 22.

[0076] According to this structure, the first common flow path 40 formed inside the turning tool holder 22 and the second common flow path 50 of the rotating tool holder 23 are connected to each other, and the common items such as hydraulic pressure, air pressure, cutting oil, etc. supplied to the turning tool holder 22 are also supplied to the adjacent rotating tool holder 23 formed as a main body through the docking device 30.

[0077] At this time, the connecting unit is a part in which the first hydraulic line 41, the first air pressure line 42, the first sensing line 43 and the first cutting oil line 44 of the turning tool holder 22 and the second hydraulic line 51, the second air pressure line 52, the second sensing line 53 and the second cutting oil line 54 of the rotating tool holder 23 extend in communication with each other.

[0078] As described through the embodiment, in the present invention, the common materials supplied through the first common flow path 40 of the turning tool holder 22 are also supplied to the second common flow path 50 of the adjacent rotating tool holder 23 through the connecting unit through the docking device 30, thereby eliminating the need to provide complex hydraulic pipelines, pneumatic pipelines, and connectors 32 behind the rotating tool holder 23 for receiving the common materials from the docking device 30.

[0079] Therefore, the rear size of the rotary tool holder 23 is minimized, so that even if the rotary tool holder 23 is mounted on the turret 10 , the rotary tool holder 23 will not interfere with the rear docking device 30 when the turret 10 rotates.

[0080] As a result, a rotary tool holder 23 requiring a supply of utilities can also be used in a turret 10 provided with a docking device 30 .

Claims

1. A common supply device for a rotary tool rest of a machine tool turret, wherein the turret comprises a plurality of tool rests arranged along the circumference of the turret, the common supply device comprising: a docking device coupled to the main body of the turret and internally including a utility flow path capable of supplying at least one of utilities including hydraulic pressure, pneumatic pressure, and cutting oil to the rear of the tool holder, and a driver for moving the utility flow path; One or more of the plurality of tool holders has a first utility flow path formed therein, the first utility flow path extending rearward in a manner capable of receiving a utility supplied from the docking device when the docking device is aligned at a predetermined rear position; a rotating tool holder, which is arranged on the turret in a circumferential direction adjacent to the tool holder having the first common flow path formed therein, and has a second common flow path formed therein, the second common flow path being capable of receiving common objects from the first common flow path of the tool holder having the first common flow path formed therein; as well as The communication unit is provided between the blade holder having the first common flow path formed therein and the rotating blade holder, and forms an internal connecting flow path for communicating the first common flow path with the second common flow path.

2. The utility supply device for the rotary tool post of a machine tool turret according to claim 1, characterized in that: The driver of the docking device is a docking cylinder that moves the common flow path in the front-rear direction.

3. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The tool holder in which the first common flow path is formed is a turning tool holder.

4. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The first common flow path is formed by extending to the upper attachment surface of the turret where a tool holder having the first common flow path formed therein is provided, and the second common flow path is formed by extending to the upper attachment surface of the turret where the rotating tool holder is provided.

5. The utility supply device for the rotary tool post of a machine tool turret according to claim 1, characterized in that: The first utility flow path includes: a first hydraulic line that supplies and discharges hydraulic pressure; a first air pressure line that sprays compressed air toward the tool insertion portion; a first sensing line that sprays compressed air in a manner that can confirm whether the tool is inserted normally; and a first cutting oil line that sprays cutting oil toward the front of the turning tool holder.

6. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The second common flow path includes: a second hydraulic pipeline, which can be connected to the first hydraulic pipeline of the first common flow path; a second pneumatic pipeline, which can be connected to the first pneumatic pipeline of the first common flow path; a second sensing pipeline, which can be connected to the first sensing line of the first common flow path; and a second cutting oil pipeline, which can be connected to the first cutting oil pipeline of the first common flow path.

7. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The communication unit is a third common flow path formed inside the turret so as to communicate with the first common flow path and the second common flow path.

8. The utility supply device for the rotary tool rest of a machine tool turret according to claim 7, characterized in that: The third common flow path includes: a third hydraulic pipeline, which connects the first hydraulic pipeline of the first common flow path and the second hydraulic pipeline of the second common flow path; a third pneumatic pipeline, which connects the first pneumatic pipeline of the first common flow path and the second pneumatic pipeline of the second common flow path; a third sensing pipeline, which connects the first sensing line of the first common flow path and the second sensing line of the second common flow path; and a third cutting oil pipeline, which connects the first cutting oil line of the first common flow path and the second cutting oil line of the second common flow path.

9. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The first common flow path is formed by extending in the direction of the adjacent rotating blade holder, and the second common flow path is formed by extending in the direction of the blade holder in which the first common flow path is formed. A connecting block having a connecting flow path inside is provided as the connecting unit between the blade holder in which the first common flow path is formed and the rotating blade holder in such a manner that the first common flow path and the second common flow path are connected to each other.

10. The utility supply device for the rotary tool post of a machine tool turret according to claim 1, characterized in that: The blade holder having the first common flow path formed therein and the rotating blade holder are integrated into an integrated body, and the connecting unit is formed by extending the first common flow path toward the side of the rotating blade holder, and extending the second common flow path toward the side of the blade holder having the first common flow path formed therein, so that the first common flow path and the second common flow path are connected to each other.

11. The utility supply device for the rotary tool rest of a machine tool turret according to claim 1, characterized in that: The rotary tool holder is a milling tool holder having a power transmission mechanism for transmitting rotational force provided therein.

12. The utility supply device for the rotary tool post of a machine tool turret according to claim 1, characterized in that: Connectors for connecting or disconnecting the common flow path of the docking device and the first common flow path of the blade holder are provided at the rear end of the blade holder in which the first common flow path is formed and at the front end of the docking device.

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