Hollow oil way system of double-spindle vertical machining center

Abstract

The invention relates to the field of machining equipment, in particular to a hollow oil way system of a double-spindle vertical machining center, which comprises a rack, a placing table, a tool apron and a driving mechanism, the placing table is slidably connected to the rack, the tool apron is slidably connected to the rack, and the driving mechanism comprises an X-axis driving assembly, a Y-axis driving assembly and a Z-axis driving assembly. The X-axis driving assembly and the Y-axis driving assembly are used for driving the containing table to slide, the Z-axis driving assembly is used for driving the tool apron to slide in the vertical direction, the screw is provided with cooling flow channels, and the multiple cooling flow channels are sequentially communicated through hoses. The cooling flow channels are used for containing lubricating oil, the screw and a transmission assembly of the screw are cooled through the lubricating oil, the multiple cooling flow channels are sequentially communicated through hoses, so that the cooling flow channels in the machining center form a whole, the lubricating oil can naturally dissipate heat in the cooling flow channels, and cooling of the working driving assembly is facilitated; the cooling efficiency of the machining center is improved, and the service life of the machining center is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing equipment, and in particular to a hollow oil circuit system of a dual-spindle vertical machining center. Background Art

[0002] With the rapid development of CNC machine tools, it has become one of the important machine tool equipment in mechanical manufacturing, and its reliability has become an important indicator to measure its performance. The good cooling function of the cooling system of large machining centers can not only ensure reliable and stable operation, but also play a very important role in extending the service life of CNC machine tools, improving cutting efficiency and ensuring normal operation.

[0003] Large machining centers are high-precision, high-efficiency, and high-cost machine tools. In order to improve production efficiency, they are used as much as possible. Usually, they work continuously for 24 hours. In order to ensure the consistency of machine tool processing accuracy, the stability of system operation, and the service life of the machine tool under long-term working conditions, the cooling system is of great significance. In the mechanical body of the machining center, the screw and transmission mechanism are the main sources of heat. When the screw is working, the oil temperature must rise. If the temperature is too high, it is easy to cause adhesive wear and a decrease in lubricating oil viscosity. Affect the overall performance and service life of the machining center. Summary of the invention

[0004] In order to achieve cooling of the screw and its transmission mechanism, improve the cooling efficiency of the machining center, and extend the service life of the machining center, the present application provides a hollow oil circuit system for a dual-spindle vertical machining center.

[0005] The hollow oil circuit system of a dual-spindle vertical machining center provided in this application adopts the following technical solution: A hollow oil circuit system of a dual-spindle vertical machining center comprises a frame, a placement table, a tool holder and a driving mechanism, wherein the placement table is slidably connected to the frame, the sliding direction of the placement table is horizontal, the placement table is used for placing a workpiece, the tool holder is slidably connected to the frame, the sliding direction of the tool holder is vertical, the tool holder is used for installing a tool, the driving mechanism comprises an X-axis driving assembly, a Y-axis driving assembly and a Z-axis driving assembly, the X-axis driving assembly, the Y-axis driving assembly and the Z-axis driving assembly are all connected to the frame, the X-axis driving assembly is used to drive the placement table to slide along the X direction, the Y-axis driving assembly is used to drive the placement table to slide along the Y direction, the X direction is perpendicular to the Y direction, the Z-axis driving assembly is used to drive the tool holder to slide in the vertical direction, the X-axis driving assembly, the Y-axis driving assembly and the Z-axis driving assembly all comprise a screw, the screw is provided with a cooling channel, and a plurality of the cooling channels are sequentially connected through a hose.

[0006] By adopting the above technical solution, the screw is provided with a cooling channel, and the cooling channel is used to contain lubricating oil. The screw and its transmission components are cooled by the lubricating oil. The multiple cooling channels are connected in sequence by hoses, so that the cooling channels in the machining center form a whole. The circulation of the lubricating oil in the machining center can be achieved by an oil pump. When any drive assembly among the X-axis drive assembly, the Y-axis drive assembly and the Z-axis drive assembly is stationary, the lubricating oil can dissipate heat naturally in the drive assembly, which is helpful for subsequent cooling of the drive assembly in operation, improving the cooling efficiency of the machining center, and extending the service life of the machining center.

[0007] Preferably, an oil outlet hole is provided on the inner wall of the cooling channel, the oil outlet hole is connected to the outside, a plurality of the oil outlet holes are provided, and the plurality of the oil outlet holes are evenly distributed on the outer periphery of the screw.

[0008] By adopting the above technical solution and setting the oil outlet hole, the contact area between the lubricating oil and the screw is increased, thereby improving the cooling efficiency of the screw.

[0009] Preferably, the driving mechanism also includes a nut, a thread groove is provided on the outer circumference of the screw, an internal thread is provided on the inner circumference of the nut, the internal thread cooperates with the thread groove, the end of the oil outlet hole away from the cooling channel is located at the bottom of the thread groove, and a plurality of the oil outlet holes are evenly distributed along the length direction of the thread groove.

[0010] By adopting the above technical solution, the nut is threadedly connected to the outer periphery of the screw, the outlet of the oil outlet hole is located at the bottom of the thread groove, the lubricating oil enters the bottom of the thread groove, and lubricates the connection between the internal thread and the thread groove wall, thereby reducing the heat generated by the friction between the nut and the screw, reducing the possibility of wear between the nut and the screw, and improving the service life of the machining center.

[0011] Preferably, the driving mechanism further comprises a valve, wherein the valve is embedded in the oil outlet hole to achieve closure of the oil outlet hole, and an abutment block is connected to a side of the valve away from the cooling channel, and the abutment block is used for abutment of the nut.

[0012] By adopting the above technical solution, a valve is set to close the oil outlet hole. When the internal thread abuts against the abutment block, the valve opens, allowing the lubricating oil in the cooling channel to flow out intermittently, thereby reducing the waste of lubricating oil, reducing production costs, and achieving a clean working environment in the machining center.

[0013] Preferably, the driving mechanism also includes a first support seat and a second support seat, the first support seat and the second support seat are both connected to the frame, the first support seat and the second support seat are symmetrically distributed along the length direction of the screw, the first support seat is provided with a first through hole, the screw is coaxially rotatable and embedded in the first through hole, the first through hole wall is provided with a first annular groove, the first annular groove wall is provided with a liquid inlet, the liquid inlet is connected to the outside world, the inner wall of the cooling channel is provided with a first channel, the first channel is connected to the first annular groove, the second support seat is provided with a second through hole, the other end of the screw is coaxially rotatable and embedded in the second through hole, the second through hole wall is provided with a second annular groove, the second annular groove wall is provided with a liquid outlet, the liquid outlet is connected to the outside world, the inner wall of the cooling channel is provided with a second channel, the second channel is connected to the second annular groove.

[0014] By adopting the above technical solution, a first support seat and a second support seat are set, the first support seat is provided with a first annular groove, the first channel connects the cooling channel and the first annular groove, a liquid inlet is provided at the groove wall of the first annular groove, the second support seat is provided with a second annular groove, the second channel connects the cooling channel and the second annular groove, and a liquid outlet is provided at the groove wall of the second annular groove, which is convenient for the installation and maintenance of the hose.

[0015] Preferably, the driving mechanism also includes a driving source, a connecting seat and a liquid inlet pipe, the driving source is connected to the frame, the driving source is used to drive the screw to rotate, the driving source is located on one side of the screw along the screw axis direction, the connecting seat is connected to the frame, and the connecting seat is located on the side of the screw away from the driving source, the connecting seat is provided with a first embedding groove, one end of the screw is embedded in the first embedding groove, the bottom of the first embedding groove is provided with a second embedding groove, the groove wall of the second embedding groove is provided with a third channel, the third channel is connected to the outside world, the end of the screw close to the bottom of the first embedding groove is provided with a connecting channel, the connecting channel connects the cooling channel and the second embedding groove, the bottom of the second embedding groove is provided with a third embedding groove, one end of the liquid inlet pipe is embedded in the third embedding groove, the other end of the liquid inlet pipe passes through the connecting channel and extends into the cooling channel, the bottom of the third embedding groove is provided with a fourth channel, and the fourth channel is connected to the outside world.

[0016] By adopting the above technical solution, a connecting seat is set, and the lubricating oil enters the liquid inlet pipe through the fourth channel, flows into the cooling channel through the liquid inlet pipe, and then flows along the cooling channel to the connecting seat channel to cool the screw, and then flows into the second embedded groove through the connecting channel, and then flows out of the connecting seat through the third channel, which is convenient for separately setting an oil pump to cool the corresponding drive component, thereby improving the cooling efficiency of the corresponding drive component and increasing the service life of the machining center.

[0017] Preferably, one end of the liquid inlet pipe away from the connecting seat abuts against the inner wall of the cooling channel away from the connecting seat, the driving mechanism also includes a first baffle and a first reset member, the outer wall of the liquid inlet pipe is provided with a first connecting groove, the first connecting groove connects the inner side of the liquid inlet pipe and the cooling channel, the first baffle is rotatably connected to the liquid inlet pipe and covers the first connecting groove, the first reset member is connected between the first baffle and the liquid inlet pipe, and the first reset member makes the first baffle have a tendency to cover the first connecting groove.

[0018] By adopting the above technical solution, a first baffle is arranged to be rotatably connected to the liquid inlet pipe, and the first reset member makes the first baffle have a tendency to cover the first connecting groove, thereby preventing the lubricating oil in the liquid inlet pipe from mixing with the lubricating oil in the cooling channel when not needed, reducing the possibility of impurities in the cooling channel entering the liquid inlet pipe and causing blockage of the liquid inlet pipe, and improving the service life of the liquid inlet pipe.

[0019] Preferably, a ring plate is connected to the outer periphery of the liquid inlet pipe, and the outer wall of the ring plate is in contact with the inner wall of the connecting channel. The driving mechanism also includes a second baffle, a third baffle, a gear, a rack, an abutment ring and a second reset member. The ring plate is provided with a second connecting groove, the second baffle is rotatably connected to the ring plate and covers the second connecting groove, the third baffle is rotatably connected to the inner wall of the liquid inlet pipe, the gear is rotatably connected to the inner wall of the liquid inlet pipe, the gear axis coincides with the rotation axis of the third baffle, the rack is slidably connected to the liquid inlet pipe, the sliding direction of the rack is parallel to the axial direction of the liquid inlet pipe, the abutment ring is coaxially slidably connected to the outer periphery of the liquid inlet pipe, the abutment ring is connected to the rack, the abutment ring is used to abut the second baffle, the second reset member is connected between the abutment ring and the liquid inlet pipe, and the second reset member makes the second baffle have a tendency to cover the second connecting groove.

[0020] By adopting the above technical solution, the outer wall of the ring plate fits with the inner wall of the connecting channel, the second baffle is rotatably connected to the ring plate, and when the lubricating oil in the liquid inlet pipe is stationary, the third baffle is embedded in the liquid inlet pipe, and the abutment ring abuts the second baffle under the action of the elastic force of the second reset member, so that the second baffle covers the second connecting groove, and when the lubricating oil in the liquid inlet pipe flows, the second baffle is pushed to rotate, driving the gear to rotate, the gear and the rack are meshed, driving the rack to slide, and driving the abutment ring to slide in the direction away from the ring plate, and the limit of the second baffle is released, which is convenient for the cooling flow of the lubricating oil to push the second baffle to rotate, thereby realizing the connection between the connecting channel and the second embedded groove.

[0021] Preferably, a plurality of the knife seats are provided, and the plurality of the knife seats are distributed at intervals along the length direction of the placement table.

[0022] By adopting the above technical solution, a plurality of tool seats are provided, and the plurality of tool seats are spaced apart along the length direction of the placement table, and a plurality of workpieces can be placed on the upper end of the placement table for processing, thereby improving the working efficiency of the machining center.

[0023] Preferably, there are a plurality of Z-axis drive assemblies, and the number of the Z-axis drive assemblies is the same as the number of the tool holders and corresponds one to one.

[0024] By adopting the above technical solution, the number of Z-axis drive components is the same as the number of tool holders and corresponds one to one, thereby realizing independent driving of multiple tool holders and improving the processing flexibility of the machining center.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The screw is provided with a cooling channel, which is used to contain lubricating oil. The screw and its transmission components are cooled by the lubricating oil. Multiple cooling channels are connected in sequence through hoses, so that the cooling channels in the machining center form a whole. The circulation of lubricating oil in the machining center can be realized by an oil pump. When any drive component among the X-axis drive component, the Y-axis drive component and the Z-axis drive component is stationary, the lubricating oil can dissipate heat naturally in the drive component, which is helpful for subsequent cooling of the drive component in operation, improving the cooling efficiency of the machining center and extending the service life of the machining center; 2. Set up oil outlet holes to increase the contact area between the lubricating oil and the screw and improve the cooling efficiency of the screw; 3. The nut is threadedly connected to the outer periphery of the screw, and the outlet of the oil outlet hole is located at the bottom of the thread groove. The lubricating oil enters the bottom of the thread groove to lubricate the connection between the internal thread and the thread groove wall, thereby reducing the heat generated by the friction between the nut and the screw, reducing the possibility of wear between the nut and the screw, and increasing the service life of the machining center. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the hollow oil system of a dual-spindle vertical machining center.

[0027] Figure 2 It is a structural diagram of the hollow oil system of the dual-spindle vertical machining center from another perspective.

[0028] Figure 3 It is a partial cross-sectional view of the hollow oil system of a dual-spindle vertical machining center.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0031] Figure 6 It is a partial structural schematic diagram of the liquid inlet pipe, the first check assembly and the second check assembly.

[0032] Figure 7 yes Figure 4 Enlarged view of point C in the middle.

[0033] Figure 8 yes Figure 3 Enlarged view of point D in the middle.

[0034] Fig. 9 yes Figure 8 Enlarged view of point E in the middle.

[0035] Fig.10 It is a schematic diagram of the structure of a nut.

[0036] Description of reference numerals: 1. Frame; 11. Base; 111. Mounting slot; 112. Mounting hole; 113. Raised strip; 12. Column; 121. Avoidance slot; 13. Pad; 14. Sliding seat; 2. Placement table; 3. Knife holder; 4. Driving mechanism; 41. X-axis driving assembly; 42. Y-axis driving assembly; 43. Z-axis driving assembly; 44. Screw; 441. Cooling channel; 442. Oil outlet hole; 443. Thread groove; 444. First channel; 445. Second channel; 446. Connecting channel; 447. Third ring groove; 45. Nut; 451. Internal thread; 452. Opening and closing block; 4521. Inclined surface; 46. Valve; 461. Abutment block; 4611 , fillet; 47, first support seat; 471, first through hole; 472, first annular groove; 473, liquid inlet; 48, second support seat; 481, second through hole; 482, second annular groove; 483, liquid outlet; 49, driving source; 410, connecting seat; 4101, first embedded groove; 4102, second embedded groove; 4103, third channel; 4104, third embedded groove; 4105, fourth channel; 4106, fourth annular groove; 4107 , guide groove; 411, liquid inlet pipe; 4111, first connecting groove; 4112, ring plate; 41121, second connecting groove; 41122, second receiving groove; 4113, first receiving groove; 4114, rotating groove; 4115, slide groove; 4116, connecting groove; 412, first check assembly; 4121, first baffle; 4122, first reset member; 413, second check assembly; 4131, second baffle; 4132, third Baffle; 4133, gear; 4134, rack; 4135, abutment ring; 41351, chamfer; 41352, connecting block; 4136, second reset member; 414, first one-way valve; 415, coupling; 416, second one-way valve; 417, control assembly; 4171, heat expansion block; 4172, sleeve; 4173, collar; 41731, guide block; 4174, third reset member; 4175, contact switch. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] Reference Figure 1 The embodiment of the present application discloses a hollow oil circuit system of a dual-spindle vertical machining center, including a frame 1. The frame 1 includes a base 11, a column 12, and a pad 13, the pad 13 is fixedly connected to the lower end of the base 11, and a plurality of pads 13 are provided. The plurality of pads 13 are divided into two groups, and the two groups of pads 13 are symmetrically distributed along the length direction of the base 11, and the pads 13 in the same group are spaced apart along the circumference of the base 11. In this embodiment, twelve pads 13 are provided.

[0039] Reference Figure 1 and Figure 2 The side wall of the base 11 is provided with a mounting groove 111, and the number of the mounting grooves 111 is the same as the number of the cushion blocks 13 and corresponds one to one. The lower groove wall of the mounting groove 111 is provided with a mounting hole 112, which vertically penetrates the base 11, and the mounting hole 112 is used for a bolt to pass through and then be threadedly connected with the cushion block 13. The lower end of the base 11 is fixedly connected with a convex strip 113, and the number of the convex strip 113 is the same as the number of the cushion blocks 13 and corresponds one to one, and the convex strip 113 is arranged around the cushion block 13. The lower end of the column 12 is fixedly connected to the upper end of the base 11, and the column 12 is located on one side of the base 11 along the length direction of the base 11.

[0040] A hollow oil circuit system of a dual-spindle vertical machining center also includes a placement table 2 and a tool holder 3. The placement table 2 is slidably connected to the upper end of the base 11, the sliding direction of the placement table 2 is horizontal, the upper end of the placement table 2 is used for placing workpieces, and the length direction of the placement table 2 is parallel to the width direction of the base 11. The tool holder 3 is slidably connected to the side of the column 12 close to the placement table 2, the sliding direction of the tool holder 3 is vertical, and the tool holder 3 is used for installing a tool to process the workpiece on the placement table 2. Two tool holders 3 are provided, and the two tool holders 3 are symmetrically distributed along the width direction of the column 12.

[0041] Reference Figure 2 , a hollow oil circuit system of a dual-spindle vertical machining center also includes a driving mechanism 4. The driving mechanism 4 includes an X-axis driving assembly 41, a Y-axis driving assembly 42 and a Z-axis driving assembly 43. The X-axis driving assembly 41 and the Y-axis driving assembly 42 are connected to the upper end of the base 11. The X-axis driving assembly 41 is used to drive the placement table 2 to slide along the X direction, which is parallel to the length direction of the base 11. The Y-axis driving assembly 42 is used to drive the placement table 2 to slide along the Y direction, which is parallel to the width direction of the base 11. The Z-axis driving assembly 43 is connected to the column 12, and the Z-axis driving assembly 43 is used to drive the tool holder 3 to slide. In this embodiment, the number of the Z-axis driving assemblies 43 is the same as the number of the tool holders 3 and corresponds one to one.

[0042] Reference Figure 3The driving mechanism 4 also includes a screw 44, a first support seat 47, a first one-way valve 414, a coupling 415 and a driving source 49. The screw 44 is rotatably connected to the frame 1, and the screw 44 is coaxially provided with a cooling channel 441. The first support seat 47 is fixedly connected to the frame 1, and the first support seat 47 is provided with a first through hole 471. One end of the screw 44 is coaxially rotatably embedded in the first through hole 471, and the outer wall of the screw 44 is in contact with the hole wall of the first through hole 471. A first annular groove 472 is provided at the hole wall of the first through hole 471, and a liquid inlet 473 is provided at the groove wall of the first annular groove 472. The liquid inlet 473 is connected to the outside, and the first one-way valve 414 is embedded in the liquid inlet 473. The first one-way valve 414 allows external lubricating oil to flow from the liquid inlet 473 to the cooling channel 441. A first channel 444 is provided at the inner wall of the cooling channel 441, and the first channel 444 is connected to the first annular groove 472. A plurality of first channels 444 are provided, and the plurality of first channels 444 are evenly distributed circumferentially around the axis of the screw 44. In the present embodiment, four first channels 444 are provided. The driving source 49 is fixedly connected to the frame 1, and the driving source 49 is used to drive the screw 44 to rotate. In the present embodiment, the driving source 49 adopts a motor, and the housing of the driving source 49 is fixedly connected to the frame 1, and the axis of the output shaft of the driving source 49 coincides with the axis of the screw 44. The coupling 415 is connected between the output shaft of the driving source 49 and the screw 44.

[0043] The driving mechanism 4 also includes a second support seat 48 and a second one-way valve 416. The second support seat 48 is fixedly connected to the frame 1. The second support seat 48 is located on the side of the first support seat 47 away from the driving source 49. The second support seat 48 is provided with a second through hole 481. The screw 44 coaxially rotates and is embedded in the second through hole 481. The outer wall of the screw 44 fits the inner wall of the second through hole 481. A second annular groove 482 is provided at the hole wall of the second through hole 481. A liquid outlet 483 is provided at the groove wall of the second annular groove 482. The liquid outlet 483 is connected to the outside. The second one-way valve 416 is embedded in the liquid outlet 483. The second one-way valve 416 allows the lubricating oil in the cooling channel 441 to flow from the liquid outlet 483 to the outside. A second channel 445 is provided at the inner wall of the cooling channel 441. The second channel 445 is connected to the second annular groove 482. There are a plurality of second channels 445, and the plurality of second channels 445 are evenly distributed around the axis of the screw 44. In this embodiment, four second channels 445 are provided.

[0044] Reference Figure 3 and Figure 4The driving mechanism 4 further includes a connecting seat 410 and a liquid inlet pipe 411. The connecting seat 410 is fixedly connected to the frame 1 and is located on the side of the second support seat 48 away from the first support seat 47. A first embedded groove 4101 is provided on the side of the connecting seat 410 close to the second support seat 48. One end of the screw rod 44 away from the driving source 49 is coaxially rotatably embedded in the first embedded groove 4101, and one end of the screw rod 44 away from the driving source 49 abuts against the bottom of the first embedded groove 4101. A second embedded groove 4102 is coaxially provided at the bottom of the first embedded groove 4101, and a third channel 4103 is provided at the wall of the second embedded groove 4102. The third channel 4103 is connected to the outside, and the third channel 4103 is connected to the external oil storage tank through a pipeline. A connecting channel 446 is coaxially provided at one end of the screw 44 near the bottom of the first embedded groove 4101. The connecting channel 446 connects the cooling channel 441 and the second embedded groove 4102. The groove wall of the second embedded groove 4102 is flush with the inner wall of the connecting channel 446. A third embedded groove 4104 is coaxially provided at the bottom of the second embedded groove 4102. The diameter of the third embedded groove 4104 is smaller than the diameter of the second embedded groove 4102. One end of the liquid inlet pipe 411 is coaxially embedded in the third embedded groove 4104. The outer wall of the liquid inlet pipe 411 fits the groove wall of the third embedded groove 4104. One end of the liquid inlet pipe 411 abuts the bottom of the third embedded groove 4104. A fourth channel 4105 is coaxially provided at the bottom of the third embedded groove 4104. The fourth channel 4105 is connected to the outside. The inner wall of the fourth channel 4105 is flush with the inner wall of the liquid inlet pipe 411. The fourth channel 4105 is connected to the oil outlet of the external oil pump through a pipeline. The other end of the liquid inlet pipe 411 passes through the connecting channel 446 and extends into the cooling channel 441 . One end of the liquid inlet pipe 411 away from the third embedding groove 4104 abuts against the inner wall of the cooling channel 441 away from the connecting seat 410 .

[0045] The driving mechanism 4 further includes a control assembly 417. The control assembly 417 includes a heat expansion block 4171, a sleeve 4172, a collar 4173, a third reset member 4174, a contact switch 4175 and a processor. A third annular groove 447 is coaxially provided at one end of the screw 44 close to the connecting seat 410, and the heat expansion block 4171 is embedded in the third annular groove 447. One end of the heat expansion block 4171 is fixedly connected to the bottom of the third annular groove 447, and the heat expansion block 4171 is located at the periphery of the cooling channel 441. The sleeve 4172 is coaxially slidably embedded in the third annular groove 447, one end of the sleeve 4172 is fixedly connected to the end of the heat expansion block 4171 away from the bottom of the third annular groove 447, the bottom of the first embedding groove 4101 is coaxially provided with a fourth annular groove 4106, the collar 4173 is coaxially slidably embedded in the fourth annular groove 4106, and a guide groove 4107 is provided at the outer wall of the fourth annular groove 4106, and a plurality of guide grooves 4107 are provided, and the plurality of guide grooves 4107 are uniformly distributed around the axis of the fourth annular groove 4106. In this embodiment, four guide grooves 4107 are provided. A guide block 41731 is fixedly connected to the outer wall of the collar 4173, and the guide block 41731 is slidably embedded in the guide groove 4107, and the sliding direction of the guide block 41731 is parallel to the axis direction of the fourth annular groove 4106. The contact switch 4175 is fixedly connected to the bottom of the fourth annular groove 4106. The contact switch 4175 is used for the collar 4173 to abut against. The contact switch 4175 is electrically connected to the processor, and the processor is used to control the operation of the external oil cylinder. The number of the third reset members 4174 is the same as the number of the guide grooves 4107 and corresponds one to one. The third reset members 4174 are connected between the connecting seat 410 and the collar 4173. The third reset members 4174 make the collar 4173 have a tendency to move away from the contact switch 4175. In this embodiment, the third reset member 4174 is a spring. One end of the third reset member 4174 is connected to the side surface of the guide block 41731 away from the sleeve 4172, and the other end of the third reset member 4174 is connected to the side wall of the guide groove 4107 close to the bottom of the fourth annular groove 4106.

[0046] Reference Figure 5 and Figure 6A first connecting groove 4111 is provided at the outer wall of the liquid inlet pipe 411 on the side away from the connecting seat 410, and the first connecting groove 4111 connects the inner side of the liquid inlet pipe 411 with the cooling channel 441. A plurality of first connecting grooves 4111 are provided, and the plurality of first connecting grooves 4111 are evenly distributed circumferentially around the axis of the liquid inlet pipe 411. In this embodiment, four first connecting grooves 4111 are provided. A first receiving groove 4113 is provided at the groove wall of the first connecting groove 4111, and the first receiving groove 4113 is located on the side of the first connecting groove 4111 away from the inner side of the liquid inlet pipe 411. The driving mechanism 4 also includes a first check assembly 412, and the number of the first check assemblies 412 is the same as the number of the first connecting grooves 4111 and corresponds one to one. The first check assembly 412 includes a first baffle 4121 and a first reset member 4122. One end of the first baffle 4121 close to the driving source 49 is rotatably embedded in the first receiving groove 4113, and the rotation axis of the first baffle 4121 is perpendicular to the axis of the liquid inlet pipe 411. The first reset member 4122 is connected between the first baffle 4121 and the liquid inlet pipe 411, and the first reset member 4122 makes the first baffle 4121 have a tendency to press against the bottom of the first receiving groove 4113. In this embodiment, the first reset member 4122 adopts a torsion spring, one end of the first reset member 4122 is connected to the side wall of the first baffle 4121, and the other end of the first reset member 4122 is connected to the groove wall of the first receiving groove 4113.

[0047] Reference Figure 6 and Figure 7 A ring plate 4112 is fixedly connected to the outer wall of the liquid inlet pipe 411 on the side close to the connecting seat 410, and the outer wall of the ring plate 4112 fits the inner wall of the connecting channel 446. The ring plate 4112 is provided with a second connecting groove 41121, and the second connecting groove 41121 penetrates the ring plate 4112 along the axis of the liquid inlet pipe 411. There are a plurality of second connecting grooves 41121, and the plurality of second connecting grooves 41121 are evenly distributed around the axis of the liquid inlet pipe 411. In this embodiment, there are six second connecting grooves 41121. A second receiving groove 41122 is provided on the groove wall of the second connecting groove 41121, and the second receiving groove 41122 is located on the side of the second connecting groove 41121 close to the connecting seat 410. The driving mechanism 4 also includes a second check assembly 413, and the second check assembly 413 includes a second baffle 4131. The number of the second baffles 4131 is the same as the number of the second connecting grooves 41121 and corresponds one to one. One end of the second baffle 4131 close to the liquid inlet pipe 411 is rotatably embedded in the second accommodating groove 41122, and the rotation axis of the second baffle 4131 is perpendicular to the axis of the liquid inlet pipe 411.

[0048] Reference Figure 7The second check assembly 413 further includes a third baffle 4132, a gear 4133 and a rack 4134. One end of the third baffle 4132 is rotatably connected to the inner wall of the liquid inlet pipe 411, and the rotation axis of the third baffle 4132 is perpendicular to the axis of the liquid inlet pipe 411. The third baffle 4132 is located on the side of the ring plate 4112 away from the second receiving groove 41122. The gear 4133 is connected to the third baffle 4132, and the axis of the gear 4133 coincides with the axis of the second baffle 4131. A rotation groove 4114 is provided on the inner wall of the liquid inlet pipe 411, and the outer periphery of the gear 4133 extends into the rotation groove 4114. A sliding groove 4115 is provided on the groove wall of the rotating groove 4114 close to the ring plate 4112, and the rack 4134 is slidably embedded in the sliding groove 4115. The sliding direction of the rack 4134 is parallel to the axial direction of the liquid inlet pipe 411. The rack 4134 is located on the side of the gear 4133 close to the ring plate 4112, and the rack 4134 and the gear 4133 are meshed.

[0049] The second check assembly 413 further includes an abutting ring 4135 and a second reset member 4136. The abutting ring 4135 is coaxially slidably connected to the outer periphery of the liquid inlet pipe 411, the inner wall of the abutting ring 4135 is in contact with the outer wall of the liquid inlet pipe 411, the abutting ring 4135 is located on the side of the ring plate 4112 close to the second receiving groove 41122, and a chamfer 41351 is provided on the outer periphery of the abutting ring 4135, the chamfer 41351 is located on the side surface of the abutting ring 4135 close to the ring plate 4112, and the chamfer 41351 is used for abutting the second baffle 4131. A connecting groove 4116 is provided on the outer wall of the liquid inlet pipe 411, and the connecting groove 4116 is connected to the slide groove 4115. A connecting block 41352 is fixedly connected to the inner circumference of the abutting ring 4135. The connecting block 41352 is slidably embedded in the connecting groove 4116. The sliding direction of the connecting block 41352 is parallel to the sliding direction of the rack 4134. One end of the connecting block 41352 away from the abutting ring 4135 is fixedly connected to the rack 4134. The second reset member 4136 is connected between the connecting block 41352 and the liquid inlet pipe 411. The second reset member 4136 enables the abutting ring 4135 to have a side surface that abuts the second baffle plate 4131 away from the bottom of the second receiving groove 41122. The second baffle plate 4131 abuts the bottom of the second receiving groove 41122. In this embodiment, the second reset member 4136 is a spring. One end of the second reset member 4136 is connected to a side surface of the connecting block 41352 away from the ring plate 4112, and the other end of the second reset member 4136 is connected to a side groove wall of the connecting groove 4116 away from the ring plate 4112.

[0050] Reference Figure 8The driving mechanism 4 further includes a nut 45, which is coaxially slidably connected to the outer periphery of the screw 44. The outer periphery of the screw 44 is provided with a thread groove 443. The inner side of the nut 45 is provided with an internal thread 451, and the internal thread 451 cooperates with the thread groove 443. An oil outlet hole 442 is provided on the inner wall of the cooling channel 441, and the oil outlet hole 442 is connected to the outside. One end of the oil outlet hole 442 away from the cooling channel 441 is located at the bottom of the thread groove 443. A plurality of oil outlet holes 442 are provided, and the plurality of oil outlet holes 442 are evenly distributed in the length direction of the thread groove 443.

[0051] Reference Fig. 9 and Fig.10 The drive mechanism 4 also includes a valve 46, which is embedded in the oil outlet hole 442 to achieve the closure of the oil outlet hole 442. There are a plurality of valves 46, and the plurality of valves 46 are evenly distributed around the axis of the oil outlet hole 442. In this embodiment, four valves 46 are arranged in one oil outlet hole 442, and the valve 46 is in the shape of a right triangle. The hypotenuse of the valve 46 is fixedly connected to the wall of the oil outlet hole 442, and the two right-angled sides of the valve 46 are respectively pressed against the right-angled sides of two adjacent valves 46. A contact block 461 is fixedly connected to the surface of one side of the valve 46 away from the cooling channel 441, and the end of the contact block 461 away from the valve 46 extends out of the oil outlet hole 442 and then extends into the threaded groove 443. A rounded corner 4611 is provided at the position of the contact block 461 away from the end of the valve 46. There is a gap between the side surface of the minor diameter of the internal thread 451 and the bottom of the thread groove 443. The side surface of the minor diameter of the internal thread 451 is fixedly connected with the opening and closing block 452. The side surface of the opening and closing block 452 away from the internal thread 451 fits with the bottom of the thread groove 443. The opening and closing block 452 is provided with inclined surfaces 4521 at both ends along the length direction of the opening and closing block 452. The inclined surfaces 4521 are used to abut against the fillet 4611. There are two opening and closing blocks 452, and the two opening and closing blocks 452 are circumferentially spaced around the axis of the nut 45. In this embodiment, there are two oil outlet holes 442 connected to the thread groove 443 at the same time.

[0052] Reference Figure 2 The X-axis driving assembly 41, the Y-axis driving assembly 42 and the Z-axis driving assembly 43 all include a screw 44, a first support seat 47, a first one-way valve 414, a coupling 415, a driving source 49, a second support seat 48, a second one-way valve 416, a connecting seat 410, a liquid inlet pipe 411, a control assembly 417, a first check assembly 412, a second check assembly 413, a nut 45 and a valve 46.

[0053] An avoidance groove 121 is provided at the lower end of the column 12, and the driving source 49 of the X-axis driving assembly 41 is embedded in the avoidance groove 121. The driving source 49, the first support seat 47, the second support seat 48 and the connecting seat 410 of the X-axis driving assembly 41 are all fixedly connected to the upper end of the base 11. The driving source 49, the first support seat 47, the second support seat 48 and the connecting seat 410 of the X-axis driving assembly 41 are arranged in sequence along the length direction of the base 11. The frame 1 also includes a sliding seat 14, which is slidably connected to the upper end of the base 11, and the sliding direction of the sliding seat 14 is parallel to the length direction of the base 11. The side surface of the sliding seat 14 close to the base 11 is fixedly connected to the outer periphery of the nut 45 of the X-axis driving assembly 41.

[0054] The driving source 49, the first supporting seat 47, the second supporting seat 48 and the connecting seat 410 of the Y-axis driving assembly 42 are all fixedly connected to the upper end of the sliding seat 14, and the driving source 49, the first supporting seat 47, the second supporting seat 48 and the connecting seat 410 of the Y-axis driving assembly 42 are arranged in sequence along the width direction of the base 11. The placing table 2 is slidably connected to the upper end of the sliding seat 14, and the sliding direction of the placing table 2 is parallel to the width direction of the base 11. The side surface of the placing table 2 close to the sliding seat 14 is fixedly connected to the outer periphery of the nut 45 of the Y-axis driving assembly 42.

[0055] The driving source 49, the first supporting seat 47, the second supporting seat 48 and the connecting seat 410 of the Z-axis driving assembly 43 are all fixedly connected to the side surface of the column 12 close to the placing table 2, and the driving source 49, the first supporting seat 47, the second supporting seat 48 and the connecting seat 410 of the Z-axis driving assembly 43 are arranged in sequence along the vertical direction of the base 11, and the driving source 49 of the Z-axis driving assembly 43 is on the side of the column 12 far from the base 11. The side surface of the tool holder 3 close to the column 12 is fixedly connected to the outer periphery of the nut 45 of the Z-axis driving assembly 43.

[0056] In this embodiment, the liquid inlet 473 of the second support seat 48 in any Z-axis drive component 43 is connected to the oil outlet of the external oil pump through a pipeline, the liquid outlet 483 of the first support seat 47 in the Z-axis drive component 43 is connected to the liquid inlet 473 of the second support seat 48 in another Z-axis drive component 43 through a hose, the liquid outlet 483 of the first support seat 47 in another Z-axis drive component 43 is connected to the liquid inlet 473 of the second support seat 48 in the Y-axis drive component 42 through a hose, the liquid outlet 483 of the first support seat 47 in the Y-axis drive component 42 is connected to the liquid inlet 473 of the second support seat 48 in the X-axis drive component 41 through a hose, and the liquid outlet 483 of the first support seat 47 in the X-axis drive component 41 is connected to the external oil storage tank through a hose.

[0057] The implementation principle of the hollow oil circuit system of a dual-spindle vertical machining center in an embodiment of the present application is: connecting the liquid outlets 483 and the liquid inlets 473 of different drive components through hoses to achieve communication between the cooling channels 441 of the X-axis drive component 41, the Y-axis drive component 42 and the Z-axis drive component 43.

[0058] When the temperature of the lubricating oil in the cooling channel 441 increases, the heat expansion block 4171 expands due to the heat, the channel sleeve 4172 slides, the sleeve 4172 abuts against the ring 4173 to overcome the elastic force of the third reset member 4174 to slide, and the ring 4173 abuts against the contact switch 4175, so that the contact switch 4175 is connected, and the processor sends a signal to control the operation of the external oil pump.

[0059] The external oil pump injects lubricating oil into the liquid inlet pipe 411 through the fourth channel 4105. The lubricating oil pushes the third baffle 4132 to rotate, driving the gear 4133 to rotate. The gear 4133 engages with the rack 4134, pushing the rack 4134 to overcome the elastic force of the second reset member 4136 to slide, driving the abutment ring 4135 to slide in the direction away from the ring plate 4112, so that the abutment ring 4135 releases the limit of the second baffle 4131.

[0060] The lubricating oil flows along the axis of the liquid inlet pipe 411 in the direction away from the connecting seat 410, and the lubricating oil pushes the first baffle 4121 to overcome the elastic force of the first reset member 4122 to rotate, so that the inner side of the liquid inlet pipe 411 is connected with the cooling channel 441, and the lubricating oil enters the cooling channel 441 through the first connecting groove 4111, and the lubricating oil flows along the axis of the liquid inlet pipe 411 in the direction close to the connecting seat 410, and the lubricating oil pushes the second baffle 4131 to rotate, and the lubricating oil enters the second embedded groove 4102, and then flows out of the connecting seat 410 through the third channel 4103.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hollow oil circuit system for a dual-spindle vertical machining center, characterized in that: The invention comprises a frame (1), a placement table (2), a tool holder (3) and a driving mechanism (4); the placement table (2) is slidably connected to the frame (1); the sliding direction of the placement table (2) is horizontal; the placement table (2) is used for placing a workpiece; the tool holder (3) is slidably connected to the frame (1); the sliding direction of the tool holder (3) is vertical; the tool holder (3) is used for installing a tool; the driving mechanism (4) comprises an X-axis driving component (41), a Y-axis driving component (42) and a Z-axis driving component (43); the X-axis driving component (41), the Y-axis driving component (42) and the Z-axis driving component (43) are The driving components (43) are all connected to the frame (1); the X-axis driving component (41) is used to drive the placement table (2) to slide along the X direction; the Y-axis driving component (42) is used to drive the placement table (2) to slide along the Y direction; the X direction is perpendicular to the Y direction; the Z-axis driving component (43) is used to drive the tool holder (3) to slide along the vertical direction; the X-axis driving component (41), the Y-axis driving component (42) and the Z-axis driving component (43) all include a screw (44); the screw (44) is provided with a cooling channel (441); and a plurality of the cooling channels (441) are sequentially connected through a hose.

2. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 1 is characterized in that: An oil outlet hole (442) is provided on the inner wall of the cooling flow channel (441); the oil outlet hole (442) is connected to the outside; a plurality of the oil outlet holes (442) are provided; and the plurality of the oil outlet holes (442) are evenly distributed on the periphery of the screw (44).

3. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 2 is characterized in that: The driving mechanism (4) further comprises a nut (45); a thread groove (443) is provided on the outer circumference of the screw rod (44); an internal thread (451) is provided on the inner circumference of the nut (45); the internal thread (451) matches the thread groove (443); an end of the oil outlet hole (442) away from the cooling channel (441) is located at the bottom of the thread groove (443); and a plurality of the oil outlet holes (442) are evenly distributed along the length direction of the thread groove (443).

4. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 3 is characterized in that: The driving mechanism (4) further comprises a valve (46); the valve (46) is embedded in the oil outlet hole (442) to achieve sealing of the oil outlet hole (442); a side of the valve (46) away from the cooling flow channel (441) is connected to an abutment block (461); the abutment block (461) is used for abutment of the nut (45).

5. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 1, characterized in that: The driving mechanism (4) further comprises a first support seat (47) and a second support seat (48); the first support seat (47) and the second support seat (48) are both connected to the frame (1); the first support seat (47) and the second support seat (48) are symmetrically distributed along the length direction of the screw rod (44); the first support seat (47) is provided with a first through hole (471); the screw rod (44) is coaxially rotatably embedded in the first through hole (471); a first annular groove (472) is provided on the wall of the first through hole (471); a liquid inlet (473) is provided on the wall of the first annular groove (472); the liquid inlet (473) is connected to the outside; the cooling A first channel (444) is provided on the inner wall of the cooling channel (441); the first channel (444) is communicated with the first annular groove (472); the second support seat (48) is provided with a second through hole (481); the other end of the screw rod (44) is coaxially rotatably embedded in the second through hole (481); a second annular groove (482) is provided on the hole wall of the second through hole (481); a liquid outlet (483) is provided on the groove wall of the second annular groove (482); the liquid outlet (483) is communicated with the outside; a second channel (445) is provided on the inner wall of the cooling channel (441); the second channel (445) is communicated with the second annular groove (482).

6. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 1, characterized in that: The driving mechanism (4) further comprises a driving source (49), a connecting seat (410) and a liquid inlet pipe (411); the driving source (49) is connected to the frame (1); the driving source (49) is used to drive the screw (44) to rotate; the driving source (49) is located on one side of the screw (44) along the axis direction of the screw (44); the connecting seat (410) is connected to the frame (1); the connecting seat (410) is located on a side of the screw (44) away from the driving source (49); the connecting seat (410) is provided with a first embedding groove (4101); one end of the screw (44) is embedded in the first embedding groove (4101); a second embedding groove (4102) is provided at the bottom of the first embedding groove (4101); the second embedding groove (4102) ) is provided with a third channel (4103) at the groove wall; the third channel (4103) is communicated with the outside; a connecting channel (446) is provided at one end of the screw rod (44) close to the bottom of the first embedded groove (4101); the connecting channel (446) is connected to the cooling channel (441) and the second embedded groove (4102); a third embedded groove (4104) is provided at the bottom of the second embedded groove (4102); one end of the liquid inlet pipe (411) is embedded in the third embedded groove (4104); the other end of the liquid inlet pipe (411) passes through the connecting channel (446) and then extends into the cooling channel (441); a fourth channel (4105) is provided at the bottom of the third embedded groove (4104); the fourth channel (4105) is communicated with the outside.

7. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 6, characterized in that: One end of the liquid inlet pipe (411) away from the connection seat (410) abuts against the inner wall of the cooling channel (441) on the side away from the connection seat (410); the driving mechanism (4) further comprises a first baffle (4121) and a first reset member (4122); a first connecting groove (4111) is provided on the outer wall of the liquid inlet pipe (411); the first connecting groove (4111) connects the inner side of the liquid inlet pipe (411) and the cooling channel (441); the first baffle (4121) is rotatably connected to the liquid inlet pipe (411) and covers the first connecting groove (4111); the first reset member (4122) is connected between the first baffle (4121) and the liquid inlet pipe (411); the first reset member (4122) enables the first baffle (4121) to have a tendency to cover the first connecting groove (4111).

8. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 6, characterized in that: The outer periphery of the liquid inlet pipe (411) is connected to a ring plate (4112); the outer wall of the ring plate (4112) is in contact with the inner wall of the connecting channel (446); the driving mechanism (4) further comprises a second baffle plate (4131), a third baffle plate (4132), a gear (4133), a rack (4134), an abutment ring (4135) and a second reset member (4136); the ring plate (4112) is provided with a second connecting groove (41121); the second baffle plate (4131) is rotatably connected to the ring plate (4112) and covers the second connecting groove (41121); the third baffle plate (4132) is rotatably connected to the inner wall of the liquid inlet pipe (411); the gear (4133) is rotatably connected to the inner wall of the liquid inlet pipe (411); ; The axis of the gear (4133) coincides with the rotation axis of the third baffle (4132); the rack (4134) is slidably connected to the liquid inlet pipe (411); the sliding direction of the rack (4134) is parallel to the axial direction of the liquid inlet pipe (411); the abutment ring (4135) is coaxially slidably connected to the outer periphery of the liquid inlet pipe (411); the abutment ring (4135) is connected to the rack (4134); the abutment ring (4135) is used to abut the second baffle (4131); the second reset member (4136) is connected between the abutment ring (4135) and the liquid inlet pipe (411); the second reset member (4136) enables the second baffle (4131) to have a tendency to cover the second connecting groove (41121).

9. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 1, characterized in that: A plurality of the knife seats (3) are provided; the plurality of the knife seats (3) are distributed at intervals along the length direction of the placement platform (2).

10. The hollow oil circuit system of the dual-spindle vertical machining center according to claim 9, characterized in that: A plurality of the Z-axis drive assemblies (43) are provided; the number of the Z-axis drive assemblies (43) is the same as the number of the tool holders (3) and corresponds one to one.

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