阅读说明：本技术 一种专用镗床镗头的双通道气动润滑及冷却装置 (Double-channel pneumatic lubricating and cooling device of special boring machine boring head ) 是由 吕利伟 常亚洲 马金卫 郭继程 尹红超 闫兴军 郑聪聪 王欢 卢浩鹏 张峰 方智 于 2021-10-18 设计创作，主要内容包括：一种专用镗床镗头的双通道气动润滑及冷却装置,包括：两路润滑冷却介质发生输出单元、二进二出旋转接头单元、二进二出通道转换单元、中孔输送管、进刀驱动过渡杆单元、进刀驱动拉杆单元、进刀驱动机构、主轴单元、镗头；两路润滑冷却介质发生输出单元与二进二出旋转接头单元连接；二进二出旋转接头单元与二进二出通道转换单元连接,二进二出通道转换单元与进刀驱动过渡杆单元连接,进刀驱动过渡杆单元与进刀驱动拉杆单元连接,进刀驱动过渡杆单元与进刀驱动机构连接；中孔输送管与二进二出通道转换单元与进刀驱动拉杆连接,进刀驱动拉杆单元和主轴单元连接,进刀驱动拉杆单元与镗头连接。有效地解决了专用镗头采用内部润滑和冷却的需求。(The utility model provides a two-channel pneumatic lubrication and cooling device of special boring machine boring head, includes: the device comprises two paths of lubricating and cooling medium generating and outputting units, two-in two-out rotary joint units, two-in two-out channel switching units, a middle hole conveying pipe, a feed driving transition rod unit, a feed driving pull rod unit, a feed driving mechanism, a main shaft unit and a boring head; the two-way lubricating and cooling medium generating and outputting unit is connected with the two-in two-out rotary joint unit; the two-in two-out rotary joint unit is connected with the two-in two-out channel conversion unit, the two-in two-out channel conversion unit is connected with the feed driving transition rod unit, the feed driving transition rod unit is connected with the feed driving pull rod unit, and the feed driving transition rod unit is connected with the feed driving mechanism; the middle hole conveying pipe and the two-in and two-out channel conversion unit are connected with a feed driving pull rod, the feed driving pull rod unit is connected with the main shaft unit, and the feed driving pull rod unit is connected with the boring head. The special boring head effectively meets the requirements of internal lubrication and cooling.)

1. The utility model provides a two-channel pneumatic lubrication and cooling device of special boring machine boring head, includes: the device comprises two paths of lubricating and cooling medium generation and output units (1), a two-in two-out rotary joint unit (2), a two-in two-out channel conversion unit (3), a middle hole conveying pipe (4), a feed driving transition rod unit (5), a feed driving pull rod unit (6), a feed driving mechanism (7), a main shaft unit (8) and a boring head (9); the method is characterized in that: the two-path lubricating and cooling medium generation and output unit (1) is connected with the two-in two-out rotary joint unit (2) through a hose; the two-in two-out rotary joint unit (2) is connected with the two-in two-out channel conversion unit (3) through four bolts, the two-in two-out channel conversion unit (3) is connected with the feed driving transition rod unit (5), the feed driving transition rod unit (5) is connected with the feed driving pull rod unit (6), and the outer part of the feed driving transition rod unit (5) is fixedly connected with the feed driving mechanism (7) through a flange and a locking ring part; the upper part of the middle hole conveying pipe (4) is connected with the two-in two-out channel conversion unit (3) and penetrates through the center of the feed driving transition rod unit (5), the lower part of the middle hole conveying pipe (4) is connected with the feed driving pull rod (6) in a matching mode, the feed driving pull rod unit (6) is connected with an inner hole of the main shaft unit (8) in a matching mode, and the lower part of the feed driving pull rod unit (6) is connected with a hook of the boring head (9).

2. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 1, wherein: the two-way lubricating and cooling medium generation and output unit (1) comprises: a valve (1.1), a medium A generation control device (1.2) and a medium B generation control device (1.3); the valve (1.1) is respectively connected with the medium A generation control device (1.2) and the medium B generation control device (1.3) through pipelines, and the medium A generation control device (1.2) and the medium B generation control device (1.3) are respectively connected with the first quick-plug connector (2.2) and the second quick-plug connector (2.3) in the two-in two-out rotary joint unit (2).

3. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 1, wherein: the two-in two-out rotary joint unit (2) comprises: a two-in two-out rotary joint (2.1), a first quick connector (2.2), a second quick connector (2.3) and an anti-rotation bracket (2.4); the first quick-connection connector (2.2) and the second quick-connection connector (2.3) are respectively arranged on two sides of the excircle of the two-in two-out rotary connector (2.1), the upper part of the two-in two-out rotary connector (2.1) is connected with the upper part of the anti-rotation support (2.4) through four groups of screws, flat pads and elastic gaskets, and the lower part of the anti-rotation support (2.4) is connected with the feed driving mechanism (7) through flange screws on the rotary bearing seat.

4. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 1, wherein: the two-in two-out channel conversion unit (3) comprises: the device comprises a channel conversion joint (3.1), a channel conversion plug-in (3.2), a first O-shaped sealing ring (3.3), a second O-shaped sealing ring (3.4), a limiting jackscrew (3.5) and a process plug (3.6); in the middle hole of passageway crossover sub (3.1) embedding passageway crossover sub (3.2), two spacing jackscrews (3.5) were installed in the both sides of passageway crossover sub (3.1), be provided with the seal groove of installation first O type sealing washer (3.3) on passageway crossover sub (3.2) upper portion top surface, the periphery is provided with the seal groove of installation second O type sealing washer (3.4) and the spacing groove of spacing jackscrew (3.5), be provided with technology end cap (3.6) on the air flue.

5. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 4, wherein: the main body of the channel conversion connector (3.1) is annular, the total height H1 is 80-100mm, the outer diameter phi 1 is 65-85mm, the central large hole phi 2H8 is 40-55mm, four standard M6 threaded holes are uniformly distributed on the upper end annular surface, the lower through hole phi 3 is 10-16mm, the middle part is in an outer hexagonal shape, the hexagonal width H4 is 32-46mm, the length H2 is 12-18mm, the channel conversion plug (3.2) is circular in shape, the outer diameter phi 2f7 is 40-55mm, the height H2 is 32-40mm, small channel holes are symmetrically distributed on two sides of the center of the upper top surface and are communicated with an air channel of the two-in two-out rotary connector (2.1).

6. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 1, wherein: the mesoporous duct (4) is a single piece comprising: the device comprises a first connecting plug (4.1), a second connecting plug (4.2), a middle hole pipe (4.3) and a third O-shaped sealing ring (4.4); two ends of the middle hole pipe (4.3) are hermetically connected with the middle big holes of the first connecting plug (4.1) and the second connecting plug (4.2), and three third O-shaped sealing rings (4.4) are respectively arranged on the outer circles of the first connecting plug (4.1) and the second connecting plug (4.2); the first connecting plug (4.1) and the second connecting plug (4.2) are identical in appearance, cylindrical and different in total length, the second sealing plug (4.2) is 12-15mm longer than the first sealing plug (4.1), a stepped hole is formed in the middle, the large hole part is 10-14mm long h7, a small hole is a through hole with the diameter phi of 4-8mm, a convex shoulder with the diameter phi of 1-2mm is designed on the excircle of the end part, a standard sealing groove is arranged on the excircle, the outer diameter phi 4 of the middle hole pipe (4.3) is phi 5-10mm, the wall thickness is 0.5-1mm, and the length h5 is 825 plus 900 mm.

7. The feed drive transition lever unit (5) includes: a feed driving transition rod (5.1), a locking ring (5.2), a pressing flange (5.3), a copper gasket seal (5.4) and a fourth O-shaped seal ring (5.5); the feed driving transition rod (5.1) and the feed driving mechanism (7) are connected and locked through two pairs of locking rings (5.2) with double conical surfaces, and the compression flange (5.3) is locked through the four groups of bolts to the locking rings (5.2); the upper part of the feed driving transition rod (5.1) is connected with the lower part of the channel conversion joint (3.1) and sealed by a copper gasket seal (5.4), and the lower part of the feed driving transition rod is connected with the feed driving pull rod (6.1) and sealed by a fourth O-shaped seal ring (5.5); the middle of the feed driving transition rod (5.1) is a through hole, the excircle of the transition rod is a step-shaped cylinder, and the total length h8 is 190 plus 220 mm.

8. The double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine as claimed in claim 1, wherein: the feed drive link unit (6) includes: the device comprises a feed driving pull rod (6.1), a positioning key (6.2), a self-lubricating positioning sleeve (6.3), a self-lubricating positioning sleeve flange plate (6.4), a framework seal (6.5), a framework seal retainer ring (6.6), a fifth O-shaped seal ring (6.7), a sixth O-shaped seal ring (6.8), an air passage transition positioning ring sleeve (6.9) and an elastic retainer ring (6.10); a positioning key (6.2) is arranged on a feed driving pull rod (6.1), the feed driving pull rod (6.1) is sleeved inside a main shaft unit (8), angle positioning is carried out through the positioning key (6.2), a self-lubricating positioning sleeve (6.3) is arranged on a step of an inner hole of the main shaft unit (8), a self-lubricating positioning sleeve flange plate (6.4) is connected on the main shaft unit (8) through four fastening screws, a framework seal ring (6.5) is arranged in the inner hole at the upper part of the self-lubricating positioning sleeve flange plate (6.4), a framework seal check ring (6.6) is connected on the self-lubricating positioning sleeve flange plate (6.4) through four fastening screws, an air passage transition positioning ring sleeve (6.9) is arranged at the lower part of the inner hole of the main shaft unit (8), an elastic check ring (6.10) is arranged in a limiting groove of the inner hole of the main shaft unit (8), a fifth O-shaped seal ring (6.1) is arranged on the outer circle of the transition positioning sleeve (6.9) and the inner hole of the main shaft unit (8), and a sixth O-shaped sealing ring (6.8) is arranged on the matching surfaces of the inner hole of the air passage transition positioning ring sleeve (6.9) and the feed driving pull rod (6.1).

Technical Field

The invention belongs to the field of special equipment for machining, relates to a lubricating and cooling device for a middle hole of a boring head of a special boring machine, and particularly relates to a double-channel pneumatic lubricating and cooling device for the boring head of the special boring machine by adopting a quasi-dry type cutting technology.

Background

It is known that a large amount of cutting heat is generated in a metal cutting process in machining, and the heat has a great influence on the quality of part machining and the life of a tool. In actual operation, a large amount of cutting fluid is usually poured in a cutting area to play roles in cooling, lubricating, cleaning and chip removal.

With the proposal of green manufacturing technology, the wet processing mode is gradually changed into a dry cutting mode and a quasi-dry cutting mode, the dry cutting has higher requirements on the performance of the cutter, and the service life of the cutter is shorter; the quasi-dry cutting technique is widely used, and the quasi-dry cutting is a machining technique between wet cutting and dry cutting, and the working mechanism of the quasi-dry cutting is to minimize the consumption of the cutting fluid while maintaining the optimum state of the cutting work (i.e., not shortening the service life of the tool, not reducing the quality of the machined surface, etc.). The specific advantages of the quasi-dry cutting technology are as follows: a small amount of cooling liquid or lubricating oil cools the cutting part by means of compressed air or cold air, the processed cutter, workpiece and cutting scraps still keep a dry state, waste liquid treatment is not needed, and the cutting fluid is harmless to human bodies and has no pollution to the environment; the method saves resources, reduces the friction between the cutter and the workpiece, between the cutter and the cutting scraps, inhibits temperature rise, prevents the occurrence of bonding phenomenon, prolongs the service life of the cutter, and improves the quality of the processed surface.

Because the cutting fluid is used in the minimum amount, the system structure occupies small area and is easy to arrange. In order to achieve a good effect of the delivered medium, an internal lubrication method is usually adopted, in which the cooling and lubricating medium enters a central hole of a main shaft through a rotary joint and then flows to a tool nose part through a special channel. However, for the special boring machine for high-precision machining and other equipment, because the hole in the main shaft is provided with the finish machining feed mechanism and the automatic tool compensation system, a special lubricating channel needs to be designed to provide lubrication for the feed mechanism, ensure the telescopic flexibility of the feed mechanism, eliminate the abrasion phenomenon, improve the stability and the precision of the feed mechanism and prolong the service life of the boring head.

Based on the reasons, the research and design of the double-channel special boring head pneumatic lubricating and cooling device with reliable function, compact structure and convenient use and installation is necessary completely, and the device provides help for the design layout of the boring head and the center hole of the main shaft of the domestic high-end finish machining special equipment.

Disclosure of Invention

The invention aims to provide a double-channel pneumatic lubricating and cooling device of a double-channel special boring machine boring head, which has the advantages of compact structure, reliable function and convenience in use and installation, meets the requirements of cooling and lubricating two different media on the special boring head, and improves the machining precision of equipment and the service life of a cutter in the quasi-dry cutting technology.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a two-channel pneumatic lubrication and cooling device of special boring machine boring head, includes: the device comprises two paths of lubricating and cooling medium generating and outputting units, a two-in two-out rotary joint unit, a two-in two-out channel converting unit, a middle hole conveying pipe, a feed driving transition rod unit, a feed driving pull rod unit, a feed driving mechanism, a main shaft unit and a boring head; the two-way lubricating and cooling medium generation and output unit is connected with the two-in two-out rotary joint unit through a hose; the two-in two-out rotary joint unit is connected with the two-in two-out channel conversion unit through four bolts, the two-in two-out channel conversion unit is connected with the feed driving transition rod unit, the feed driving transition rod unit is connected with the feed driving pull rod unit, and the outer part of the feed driving transition rod unit is fixedly connected with the feed driving mechanism through a flange and a locking ring component; the upper part of the middle hole conveying pipe is connected with the two-in two-out channel conversion unit and penetrates through the center of the feed driving transition rod unit, the lower part of the middle hole conveying pipe is connected with the feed driving pull rod in a matched mode, the feed driving pull rod unit is connected with an inner hole of the main shaft unit in a matched mode, and the lower part of the feed driving pull rod unit is connected with a hook of the boring head.

The two-way lubricating and cooling medium generating and outputting unit comprises: the valve, the medium A generation control device and the medium B generation control device; the valve is respectively connected with the medium A generation control device and the medium B generation control device through pipelines, and the medium A generation control device and the medium B generation control device are respectively connected with the first quick-plug connector and the second quick-plug connector in the two-in and two-out rotary joint unit.

The two-in two-out rotary joint unit includes: the device comprises a two-in two-out rotary joint, a first quick connector, a second quick connector and an anti-rotation bracket; the first quick-connection-peg and the second quick-connection-peg are respectively installed on two sides of the excircle of the two-in two-out rotary joint, the upper part of the two-in two-out rotary joint is connected with the upper part of the anti-rotation support through four groups of screws, flat pads and elastic gaskets, and the lower part of the anti-rotation support is connected with the feed driving mechanism through flange screws on the rotary bearing seat.

The two-in two-out channel conversion unit comprises: the device comprises a channel conversion joint, a channel conversion plug-in, a first O-shaped sealing ring, a second O-shaped sealing ring, a limiting jackscrew and a process plug; the channel conversion plug-in is embedded into a middle inner hole of the channel conversion connector, two limiting jackscrews are installed on two sides of the channel conversion connector, a sealing groove for installing a first O-shaped sealing ring is formed in the top surface of the upper portion of the channel conversion plug-in, a sealing groove for installing a second O-shaped sealing ring and a limiting groove for limiting the jackscrews are formed in the periphery of the channel conversion plug-in, and a process plug is arranged on an air passage.

The main body of the channel conversion connector is annular, the total height H1 is 80-100mm, the outer diameter phi 1 is 65-85mm, the central large hole phi 2H8 is 40-55mm, four standard M6 threaded holes are uniformly distributed on the upper end annular surface, the lower through hole phi 3 is 10-16mm, the middle part is in an outer hexagonal shape, the hexagonal width H4 is 32-46mm, the length H2 is 12-18mm, the appearance of the channel conversion plug is circular, the outer diameter phi 2f7 is 40-55mm, the height H2 is 32-40mm, and small channel holes are symmetrically distributed on two sides of the center of the upper top surface and communicated with the air passages of the two-in and two-out rotary connector.

The mesoporous delivery tube is a unitary piece comprising: the first connecting plug, the second connecting plug, the middle hole pipe and the third O-shaped sealing ring; two ends of the middle hole pipe are hermetically connected with the middle big holes of the first connecting plug and the second connecting plug, and three third O-shaped sealing rings are respectively arranged on the outer circles of the first connecting plug and the second connecting plug; the first connecting plug and the second connecting plug are identical in appearance, cylindrical and different in total length, the second sealing plug is 12-15mm longer than the first sealing plug, the middle of the second sealing plug is a stepped hole, the length h7 of the large hole portion is 10-14mm, the small hole is a through hole with the diameter phi 4-8mm, a convex shoulder with the diameter phi 1-2mm is designed on the excircle of the end portion, a standard sealing groove is arranged on the excircle, the outer diameter phi 4 of the middle hole pipe is phi 5-10mm, the wall thickness is 0.5-1mm, and the length h5 is 825 plus 900 mm.

The feed drive transition lever unit includes: the feed driving transition rod, the locking ring, the pressing flange, the copper gasket seal and the fourth O-shaped seal ring; the feed driving transition rod and the feed driving mechanism are connected and locked through two pairs of locking rings with double conical surfaces, and the compression flange is locked on the locking rings through four groups of bolts; the upper part of the feed driving transition rod is connected with the lower part of the channel adapter and sealed by a copper gasket, and the lower part of the feed driving transition rod is connected with the feed driving pull rod and sealed by a fourth O-shaped sealing ring; be the through-hole in the middle of the feed drive transition pole, the transition pole excircle is the notch cuttype cylinder, and total length h8 is 190-one 220 mm.

The feed drive link unit includes: the device comprises a feed driving pull rod, a positioning key, a self-lubricating positioning sleeve flange plate, a framework seal retainer ring, a fifth O-shaped seal ring, a sixth O-shaped seal ring, an air passage transition positioning ring sleeve and an elastic retainer ring; the positioning key is installed on the feed drive pull rod, the feed drive pull rod is sleeved in the main shaft unit, angle positioning is carried out through the positioning key, the self-lubricating positioning sleeve is installed on a step of an inner hole of the main shaft unit, a self-lubricating positioning sleeve flange is connected to the main shaft unit through four fastening screws, the framework is installed in an inner hole in the upper portion of the self-lubricating positioning sleeve flange, a framework sealing check ring is connected to the self-lubricating positioning sleeve flange through four fastening screws, an air passage transition positioning ring sleeve is installed on the lower portion of the inner hole of the main shaft unit, an elastic check ring is installed in a limiting groove of the inner hole of the main shaft unit, a fifth O-shaped sealing ring is installed on the matching surface of the outer circle of the air passage transition positioning sleeve and the inner hole of the main shaft unit, and a sixth O-shaped sealing ring is installed on the matching surface of the inner hole of the air passage transition positioning ring sleeve and the feed drive pull rod.

The invention adopts the technical scheme to obtain the beneficial effects that: the device can move freely along with the feed pull rod mechanism, is particularly suitable for the requirements of lubrication and cutter cooling of the boring head with the feed pull rod mechanism, and provides a stable and reliable technical scheme for the machining precision, the part machining quality, the cutter cutting performance and the service life of the boring head. Meanwhile, the device is reasonable in structural design, reliable in function, convenient and fast in part installation and convenient to overhaul and maintain in the later period, and especially, each connecting thread adopts a left-handed and right-handed thread with the opposite direction to the rotation direction of the main shaft, so that the risk of loosening in the use of the boring mill is eliminated, and the stability and reliability of the work of the transmission chain are ensured.

Drawings

Fig. 1 is a schematic structural diagram of a pneumatic lubricating and cooling device of a special boring head of a boring machine.

FIG. 2 is a view of FIG. 1Part of the enlarged structure schematic diagram;

FIG. 3 is a view of FIG. 1Part of the enlarged structure schematic diagram;

FIG. 4 is a view of FIG. 1Part of the enlarged structure schematic diagram;

FIG. 5 is a schematic structural diagram of a middle hole conveying pipe in the pneumatic lubricating and cooling device of the boring head of the special boring machine of the invention;

FIG. 6 is a schematic view of the bottom structure of a feed driving tie bar 6.1 (lower hook portion) in the pneumatic lubricating and cooling device of the boring head of the special boring machine of the present invention;

FIG. 7 is a schematic view of a structure of an anti-rotation support in the pneumatic lubricating and cooling device of the boring head of the special boring machine of the present invention.

In the figure: 1. two paths of lubricating and cooling medium generation and output units, namely a valve 1.1, a medium A generation control device 1.2 and a medium B generation control device 1.3; 2. a two-in two-out rotary joint unit, a two-in two-out rotary joint 2.1, a first quick connector 2.2, a second quick connector 2.3 and an anti-rotation bracket 2.4; 3. a two-in two-out channel conversion unit, a channel conversion joint 3.1, a channel conversion plug-in 3.2, a first O-shaped sealing ring 3.3, a second O-shaped sealing ring 3.4, a limiting jackscrew 3.5 and a process plug 3.6; 4. the device comprises a middle-hole conveying pipe, a first connecting plug 4.1, a second connecting plug 4.2, a middle-hole pipe 4.3 and a third O-shaped sealing ring 4.4; 5. the feed driving transition rod unit comprises a feed driving transition rod unit, a feed driving transition rod unit 5.1, a locking ring 5.2, a pressing flange 5.3, a copper gasket seal 5.4 and a fourth O-shaped seal ring 5.5; 6. a feed driving pull rod unit, 6.1. a feed driving pull rod, 6.2. a positioning key, 6.3. a self-lubricating positioning sleeve, 6.4. a self-lubricating positioning sleeve flange disc, 6.5. a framework seal, 6.6. a framework seal retainer ring, 6.7. a fifth O-shaped seal ring, 6.8. a sixth O-shaped seal ring, 6.9. an air passage transition positioning ring sleeve and 6.10. an elastic retainer ring; 7. a feed driving mechanism, 8, a main shaft unit and 9, a boring head.

The specific implementation mode is as follows:

the present invention is described in detail below with reference to the drawings and examples, but it should be understood that the scope of the present invention is not limited by the specific embodiments.

As shown in fig. 1-7: the utility model provides a two-channel pneumatic lubrication and cooling device of special boring machine boring head, includes: the device comprises two paths of lubricating and cooling medium generating and outputting units 1, a two-in two-out rotary joint unit 2, a two-in two-out channel conversion unit 3, a middle hole conveying pipe 4, a feed driving transition rod unit 5, a feed driving pull rod unit 6, a feed driving mechanism 7, a main shaft unit 8 and a boring head 9; the two-path lubricating and cooling medium generation and output unit 1 is connected with the two-in two-out rotary joint unit 2 through a hose; a second inlet and second outlet rotary joint 2.1 in the second inlet and second outlet rotary joint unit 2 is connected with a channel conversion joint 3.1 in the second inlet and second outlet channel conversion unit 3 through four bolts, and the middle air passage part is sealed through two first O-shaped sealing rings 3.3 in the second inlet and second outlet channel conversion unit 3; a two-in two-out channel conversion joint 3.1 in the two-in two-out channel conversion unit 3 is connected with a thread G1 on a feed drive transition rod 5.1 in the feed drive transition rod unit 5, and is sealed by a copper gasket seal 5.4 in the feed drive transition rod unit 5; the feed driving transition rod 5.1 in the feed driving transition rod unit 5 is connected with the feed driving pull rod 6.1 in the feed driving pull rod unit 6 through a thread M1 and sealed through a fourth O-shaped sealing ring 5.5, and the outer part of the feed driving transition rod unit 5 is tightly connected with the feed driving mechanism 7 through a flange and a locking ring part; the upper first connecting plug 4.1 in the middle hole conveying pipe 4 is connected with the channel conversion plug-in 3.2 in the two-in and two-out channel conversion unit 3, the sealing is carried out through a third O-shaped sealing ring 4.4, the upper first connecting plug passes through a central hole of a feed driving transition rod 5.1 of the feed driving transition rod unit 5 and enters a central hole of a feed driving pull rod 6.1 of the feed driving pull rod unit 6, a second connecting plug 4.2 at the lower part of the middle hole conveying pipe 4 is connected with the feed driving pull rod 6 in a matched mode through a fourth O-shaped sealing 4.5 at the lower part, the feed driving pull rod unit 6 is connected with an inner hole of the main shaft unit 8 in a matched mode, and the lower part of the feed driving pull rod unit 6 is connected with a hook of the boring head 9.

The two-way lubricating and cooling medium generating and outputting unit 1 comprises: a valve 1.1, a medium A generation control device 1.2 and a medium B generation control device 1.3; the valve 1.1 is respectively connected with the medium A generation control device 1.2 and the medium B generation control device 1.3 through pipelines, and the medium A generation control device 1.2 and the medium B generation control device 1.3 are respectively connected with the first quick connector 2.2 and the second quick connector 2.3 of the two-in two-out rotary joint unit 2. When the device works, an air source is connected with a valve 1.1 through a pipeline and then enters a medium A generation control device 1.2 and a medium B generation control device 1.3 in two ways, the medium A generation control device 1.2 and the medium B generation control device 1.3 consist of a standard air control element two-way control air valve VQ20, a filtering pressure reducing valve AW and an oil atomizer AL, and after oil-mist lubricating media and cooling media are generated, the oil-mist lubricating media and the cooling media respectively enter a first quick connector 2.2 and a second quick connector 2.3 in a two-in and two-out rotary joint unit 2 through hoses.

The two-in two-out rotary joint unit 2 includes: a two-in two-out rotary joint 2.1, a first quick connector 2.2, a second quick connector 2.3 and an anti-rotation bracket 2.4; the first fast plug connector 2.2 and the second fast plug connector 2.3 are respectively arranged at two sides of the periphery of the two-in two-out rotary joint 2.1, the upper part of the two-in two-out rotary joint 2.1 is connected with the upper part of the anti-rotation support 2.4 through four groups of screws, flat pads and elastic gaskets, the anti-rotation support 2.4 is a welding assembly of a thick steel plate with the thickness of 3-5mm, the welding assembly is Z-shaped, the upper main body is circular, the lower part of the anti-rotation support 2.4 is a section of a ring, and the lower part of the anti-rotation support 2.4 is connected with a flange screw on a rotary bearing seat of the feed driving mechanism 7.

The two-in two-out channel switching unit 3 includes: the device comprises a channel conversion joint 3.1, a channel conversion plug-in 3.2, a first O-shaped sealing ring 3.3, a second O-shaped sealing ring 3.4, a limiting jackscrew 3.5 and a process plug 3.6; in the middle hole of passageway crossover sub 3.1 is inlayed to passageway crossover sub 3.2, two spacing jackscrews 3.5 are respectively from passageway crossover sub 3.1's both sides screw in, it is spacing to rotate passageway crossover sub 3.2, technology end cap 3.6 blocks up the left side air flue technology leakage mouth of passageway crossover sub 3.2, two advance two play rotary joint 2.1 and passageway crossover sub 3.1 cooperation air flue are connected the face and are sealed through first O type sealing washer 3.3, second O type sealing washer 3.4 seals the fitting surface of passageway crossover sub 3.2 and passageway crossover sub 3.1.

The main body of the channel adapter 3.1 is annular, the total height H1 is 80-100mm, the outer diameter phi 1 is 65-85mm, the central large hole phi 2H8 is 40-55mm, four standard M6 threaded holes are uniformly distributed on the upper end ring surface, the lower through hole phi 3 is 10-16mm, the middle part is in an outer hexagon shape, the width H4 of the hexagon is the standard wrench opening size of 32-46mm, the length H2 is 12-18mm, the lower standard thread G1 is 1/2-3/4 inch outer threads, the thread length meets the screwing and fastening requirements according to the outer diameter requirements, and the threads are designed into left-handed threads and right-handed threads according to different rotation directions of the boring head 9 so as to meet the anti-loosening requirements; two standard threaded holes for limiting jackscrews are symmetrically arranged at a proper height on the outer circumference at 180 degrees; the channel conversion plug 3.2 is circular in shape, the outer diameter phi 2f7 is phi 40-55mm, the height h2 is 32-40mm, small channel holes are symmetrically distributed on two sides of the center of the top surface of the upper portion and are communicated with a second-in second-out rotary joint 2.1 air channel, a first O-shaped sealing ring 3.3 is arranged in a matched sealing groove, a blind hole is formed in the lower portion of the middle of the first O-shaped sealing ring and is communicated with one small channel hole, a sealing groove of a second O-shaped sealing ring 3.4 and a limiting groove of a limiting jackscrew 3.5 are arranged on the periphery of the first O-shaped sealing ring, and a technological plug 3.6 is arranged on the air channel.

The mesoporous duct 4 is a monolithic piece comprising: the plug comprises a first connecting plug 4.1, a second connecting plug 4.2, a middle hole pipe 4.3 and a third O-shaped sealing ring 4.4; two ends of the middle hole pipe 4.3 are hermetically connected with middle big holes of the first connecting plug 4.1 and the second connecting plug 4.2, and three third O-shaped sealing rings 4.4 are respectively arranged on the outer circles of the first connecting plug 4.1 and the second connecting plug 4.2; the first connecting plug 4.1 and the second connecting plug 4.2 are the same in shape, cylindrical and different in total length, the second connecting plug 4.2 is 12-15mm longer than the first connecting plug 4.1, a stepped hole is formed in the middle, the large hole part length h7 is 10-14mm, the small hole is a through hole with the diameter phi 4-8mm, a 1-2mm convex shoulder is arranged on the excircle of the end part, a standard sealing groove is arranged on the excircle, the outer diameter phi 4 of the middle hole tube 4.3 is phi 5-10mm, the wall thickness is 0.5-1mm, and the length h5 is 825 plus 900 mm.

The feed drive transition lever unit 5 includes: a feed driving transition rod 5.1, a locking ring 5.2, a pressing flange 5.3, a copper gasket seal 5.4 and a fourth O-shaped seal ring 5.5; the feed driving transition rod 5.1 and the feed driving mechanism 7 are connected and locked through two pairs of locking rings 5.2 with double conical surfaces, the compression flange 5.3 locks the locking rings 5.2 through four groups of bolts, the upper part of the feed driving transition rod 5.1 is connected with the lower part of the channel conversion joint 3.1 and is sealed through a copper gasket seal 5.4, the lower part is connected with the feed driving pull rod 6.1 and is sealed through a fourth O-shaped seal ring 5.5, the middle part of the feed driving transition rod 5.1 is a through hole, the excircle of the transition rod is a step-shaped cylinder, the total length h8 is 190 and 220mm, the longer part at the upper end is a matching locking part, the diameter phi 5 is phi 30-40mm, the thread of an inner hole at the upper end is a standard pipe thread, the phi 6 at the shoulder part of the middle shaft is phi 50-55mm, the length h9 is 15-20mm, symmetrical quadrilateral planes are milled in the circumferential direction, the width is 46-50mm, and the 7h6 at the lower part of the shaft shoulder is phi 32-40mm, the length h10 is 15-20mm, and the root part of the shaft shoulder is provided with a sealing embedded groove; the lowest M1 fine thread external thread is 32-40mm, and is set to be left-handed and right-handed according to different rotation directions of the boring head 9 so as to meet the anti-loosening requirement, and the length meets the screwing requirement; the outer diameter phi 10 of the pressing flange 5.3 is phi 63-75mm, 4-6 unthreaded holes with the diameter phi 7mm are uniformly distributed on the circumference of the flange plate, the protruding amount of the flange spigot is 5-8mm, the outer diameter phi 11 of the spigot is phi 34.8-52mm, and the total length of the flange is 15-18 mm.

The feed drive link unit 6 includes: the device comprises a feed driving pull rod 6.1, a positioning key 6.2, a self-lubricating positioning sleeve 6.3, a self-lubricating positioning sleeve flange plate 6.4, a framework seal 6.5, a framework seal retainer ring 6.6, a fifth O-shaped seal ring 6.7, a sixth O-shaped seal ring 6.8, an air passage transition positioning ring sleeve 6.9 and an elastic retainer ring 6.10; a positioning key 6.2 is arranged on a feed driving pull rod 6.1, the feed driving pull rod 6.1 is sleeved in the main shaft unit 8 and is positioned at an angle through the positioning key 6.2, a self-lubricating positioning sleeve 6.3 is arranged on a step of an inner hole of the main shaft unit 8, a self-lubricating positioning sleeve flange 6.4 is connected on the main shaft unit 8 through four fastening screws, and a framework seal 6.5 is arranged in the inner hole at the upper part of the self-lubricating positioning sleeve flange 6.4 to seal the axial diameter of the feed driving pull rod 6.1; the framework sealing retainer ring 6.6 is connected to a self-lubricating positioning sleeve flange 6.4 through four fastening screws to limit the framework seal 6.5, the air passage transition positioning ring sleeve 6.9 is installed at the lower part of the inner hole of the main shaft unit 8, the elastic retainer ring 6.10 is installed in a limiting groove of the inner hole of the main shaft unit 8 to limit the air passage transition positioning sleeve 6.9, the fifth O-shaped sealing ring 6.7 is installed on the matching surface of the outer circle of the air passage transition positioning sleeve 6.9 and the inner hole of the main shaft unit 8, and the sixth O-shaped sealing ring 6.8 is installed on the matching surface of the inner hole of the air passage transition positioning ring sleeve 6.9 and the feed driving pull rod 6.1 to seal the air passage.

The length H16 of the feed driving pull rod 6.1 is 705-735mm, the outer diameter phi 9H7 is 55-70mm, and a quadrilateral plane with the width of 46-50mm is milled at the upper end in the circumferential direction of the part with the length of 10-14mm and is used for screwing threads of an open end wrench; the hollow hole is a stepped hole, the upper part phi 7H7 of the hollow hole is phi 32-40mm, the length of the hollow hole is 2-3mm longer than that of H10, and the adjacent internal thread M1 below the phi 7H7 hole is a standard series of fine threads between M32-40 mm; the middle part of the hollow hole is a phi 8 hole adjacent to the threaded hole, the diameter is phi 13-20mm, the phi 8 hole penetrates through the lower inclined hole phi 15, the lower inclined hole phi 15 is phi 8-10mm, the outer circumference of the lower inclined hole phi 15 is provided with a smooth transition arc groove, the distance between the lower inclined hole phi 15 and the bottom H14 is 66-72mm, the hole phi 20H8 at the lower part of the hollow hole is adjacent to the phi 8 hole, the diameter is phi 8-14mm, the length is 30-35mm, the lower part of the phi 20H8 is adjacent to the hole phi 17, the diameter of phi 17 is phi 16-20mm, the length is 15-22mm, the phi 17 lower annular groove phi 19 is 0.5-1mm larger than the diameter of the interrupted annular ring phi 22, the height H15 is 12mm, the lower part of the phi 19 is in the shape of a hexagonal trapezoidal annular groove, the width H19 of the trapezoidal tooth is 7mm, the outer diameter phi 22 is phi 30mm, the inner edge diameter is 21 phi 21mm, and is the same as the shape of the trapezoidal tooth of the boring head 9, the thickness h16 of the hexagonal trapezoidal tooth part is 7mm, a flat key groove is arranged at a position on the outer diameter of the feed driving pull rod 6.1, which is away from the top and is proper, and the center of the key groove is superposed with the central plane of the root of the hexagonal trapezoidal tooth; the positioning key 6.2 is a standard square key with the width of 8-12mm, and the key length h13 is 43-50 mm; the flange plate of the self-lubricating positioning sleeve is 6.4, the shape of the flange plate is a stepped disk type, the length h11 is 30-35mm, the outer circle phi 12 is phi 100 and 125mm, the outer circle phi 14 of the positioning spigot is phi 72-90 mm, the length h12 is 15-20mm, an inner hole is a stepped hole, a large hole mounting framework is sealed by 6.5, the depth is 8-12mm, a small hole phi 13 is phi 60-78mm, and 4-6 bolt stepped mounting holes are uniformly distributed on the flange surface; the air flue transition positioning ring sleeve is 6.9 and is in a circular ring shape, the length h17 is 95-105mm, the outer circle phi 18h6 is phi 76-95mm, the inner hole phi 9f8 is phi 55-70mm, an inner hole phi 9f8 is internally provided with an annular groove phi 16, the diameter of the annular groove phi 16 is 5-8mm larger than that of the phi 9f8, the length h18 is 42-50mm, two through holes with the diameter phi 7-10mm are symmetrically formed in the position, 4-7mm away from the lower edge, of the annular groove phi 16, and the upper side and the lower side of each through hole of the outer circle and the inner hole are respectively provided with a sealing groove; the framework sealing retainer ring 6.6 is a circular ring piece with the thickness of 3-5mm, and is provided with a mounting hole. Self-lubricating position sleeve 6.3, skeleton seal 6.5, skeleton sealing retainer ring 6.6, fifth O type sealing washer 6.7, sixth O type sealing washer 6.8, circlip 6.10 are the standard component.

When the boring head 9 rotates, the control valves in the medium A generation control device 1.2 and the medium B generation control device 1.3 are opened, the medium A and the medium B respectively enter the two-in two-out rotary joint 2.1 through the first quick plug-in joint 2.2 and the second quick plug-in joint 2.3, two paths of media enter the two-in two-out channel conversion unit 3 along two bilaterally symmetrical channels, the medium A enters the center of the channel conversion plug-in 3.2 after channel conversion, and is continuously conveyed forwards along the center of the middle hole conveying pipe 4 matched with the medium A, passes through the center hole of the feed driving transition rod 5.1 in the feed driving transition rod unit 5 and the center hole of the feed driving pull rod 6.1 in the feed driving pull rod unit 6, and simultaneously passes through the outer feed driving mechanism 7 and the main shaft unit 8 and then enters the center hole pull rod of the boring head mechanism connected with the main shaft, and carries out aerial fog lubrication on the feed mechanism of the boring head 9, meanwhile, an air seal is formed on the sliding block mechanism without sealing, and external oil sludge dust is prevented from entering the mechanism. The medium B enters the bottom of the channel conversion insert 3.2, flows to a cavity formed by the outer wall of the middle-hole conveying pipe 4 and other parts, the part of the two-in two-out channel conversion unit 3 is a cavity formed by the outer wall of the middle-hole conveying pipe 4 and a phi 3 hole inner wall at the lower part of the channel conversion joint 3.1, the part of the feed driving transition rod unit 5 is a cavity formed by the inner wall of a center hole of the feed driving transition rod 5.1, the part of the feed driving pull rod unit 6 is a cavity formed by the phi 8 hole inner wall of the feed driving pull rod 6.1, enters an inner ring groove phi 16 of the air channel transition positioning ring sleeve 6.9 through phi 15 inclined holes at two sides after reaching the lower part of the feed driving pull rod 6.1, enters an air hole channel of a shaft core of the main shaft unit 8 through a small vent hole in the ring groove, flows to the lower part of the main shaft unit 8 and the matching end face of the boring head 9, flows to a cooling air hole of a tool of the boring head 9 after entering the air hole channel at the end face of the boring head 9, and cooling and lubricating the cutter.

When the boring head 9 rotates to work, the upper part of the two-in two-out rotary joint 2.1 and the anti-rotation support 2.4 are fixed and do not rotate, and the air passage outlet at the lower part of the two-in two-out rotary joint 2.1 rotates along with the two-in two-out channel conversion unit 3, the middle hole conveying pipe 4, the feed driving transition rod unit 5 and the feed driving pull rod unit 6.

When the boring head 9 rotates to work for feeding, the feed driving mechanism 7 drives the feed driving transition rod unit 5, the two-in two-out channel conversion unit 3, the two-in two-out rotary joint unit 2, the middle hole conveying pipe 4, the feed driving pull rod 6.1 in the feed driving pull rod unit 6 and the pull rod in the boring head 9 to reciprocate up and down, the central hole medium channels are connected at all positions and are not separated, the whole body moves up and down, phi 15 inclined holes on two sides of the feed driving pull rod 6.1 are in relative movement with phi 16 positions in the inner ring groove of the gas channel transition positioning ring sleeve 6.9, the width h18 and the position of the phi 16 phi annular groove ensure that the phi 15 inclined holes are in complete overlapping transition, sealing is carried out through the sixth O-shaped sealing rings 6.8 on two sides, and the feed action is completed while the non-leakage conveying of the medium is ensured.

The invention satisfies the lubricating and cooling functions of two paths of media, simultaneously considers the transmission requirement of the feed mechanism, simultaneously has reasonable structural design, simple part processing technology and low manufacturing cost, and is an excellent scheme for the structural design of two paths of special equipment such as a special boring machine, a machining center and the like.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will recognize that changes may be made in the form and detail of the embodiments described herein without departing from the spirit and scope of the invention. Therefore, the present invention should be construed as limited only by the appended claims and equivalents thereof.