CN106078350A - 5-axis machining center is with automatically cooling down screw mechanism - Google Patents

Abstract

The invention relates to an automatic cooling lead screw mechanism for a five-axis linkage machining center, which includes a bearing seat, a motor fixing seat, a screw, a motor, a screw internal cooling fixing seat and a cooling oil pipe. The tail end passes through the bearing seat, the motor is installed on the motor fixing seat, and is coupled with the head end of the screw rod. A cooling hole is opened from the tail end to the head end of the screw rod. The cooling oil pipe is inserted into the cooling hole and is connected to the inner wall of the cooling hole. A gap is formed, the screw internal cooling fixing seat is fixed on the bearing seat, and surrounds the tail end of the screw rod, and the screw internal cooling fixing seat is provided with an oil inlet channel connected with the cooling oil pipe and an oil outlet channel connected with the cooling hole. The automatic cooling lead screw mechanism for the five-axis linkage machining center of the present invention is provided with a cooling oil pipe in the screw rod, and an oil inlet passage and an oil outlet passage for the cooling oil to flow in and out in the screw rod internal cooling fixing seat, so it can The heat in the screw is taken away to realize the automatic cooling of the screw mechanism.

Description

Automatic cooling screw mechanism for five-axis linkage machining center

technical field

The invention relates to the field of drive equipment, in particular to an automatic cooling lead screw mechanism for a five-axis linkage machining center.

Background technique

The five-axis linkage machining center is a kind of CNC machine tool, which is generally equipped with a base, a workbench and a processing department. On the five-axis linkage machining center, in order to move the parts to be processed to the bottom of the processing part, a screw mechanism is often used to drive the table to move. However, in the long-term processing process, the screw rod of the screw mechanism will gradually heat up and cause the temperature to rise, which will affect the processing precision of the machine tool. The traditional way to solve the heat generation of the screw is: to cool the screw through the shower coolant or to increase the lubricating oil to reduce the friction to solve the problem of heat generation, but the effect of these two methods is not good, and the operation is troublesome.

Contents of the invention

In view of this, the present invention aims to provide an automatic cooling screw mechanism for a five-axis linkage machining center that can automatically cool the screw.

The invention provides an automatic cooling lead screw mechanism for a five-axis linkage machining center, which includes a bearing seat, a motor fixing seat, a screw, a motor, a screw internal cooling fixing seat and a cooling oil pipe, and the head end of the screw is installed on the motor A fixed seat, the tail end of the screw rod passes through the bearing seat, the motor is installed on the motor fixed seat, coupled with the head end of the screw rod, and used to drive the screw rod relative to the bearing seat and When the motor fixed seat rotates, the screw is provided with a cooling hole from the tail end to the head end. One end of the cooling hole at the tail end of the screw is open and the other end is closed. The cooling oil pipe is inserted into the cooling hole and connected with the A gap for cooling oil to flow out is formed between the inner walls of the cooling holes. The screw internal cooling fixing seat is fixed on the bearing seat and surrounds the tail end of the screw. The screw internal cooling fixing seat is provided with An oil inlet passage communicated with the cooling oil pipe and an oil outlet passage communicated with the cooling hole.

Preferably, the screw internal cooling fixing seat includes a base body and a cover body, the base body is connected with the tail end of the bearing housing, and surrounds the tail end of the screw rod, the cover body and the base body The tail end is connected, and the cover body is formed with an oil inlet hole, an oil outlet hole and an oil return cavity, the oil inlet hole corresponds to the position of the inlet of the cooling oil pipe, and the oil return cavity is connected to the cooling hole The open end of the oil hole communicates with the oil return chamber and the outside of the cover.

Preferably, the inlet of the oil inlet hole is connected to an oil inlet pipe, the outlet of the oil inlet hole is connected to the inlet of the cooling oil pipe through a joint, and the outlet of the oil outlet hole is connected to an oil outlet pipe.

Preferably, a rotary sealing ring is arranged in the seat, the inner wall of the rotary sealing ring closely matches the outer surface of the tail end of the screw, and the outer end surface of at least one of the rotary sealing rings faces the oil return chamber.

Preferably, an O-ring is provided at the connection interface between the cover and the seat.

Preferably, a plug is provided at the head end of the screw, and the plug closes an end of the cooling hole away from the bearing seat.

Preferably, an anti-collision frame is sleeved on the screw at a position adjacent to the inner side of the bearing seat and/or the inner side of the motor fixing seat, and an anti-collision rubber pad is provided on the anti-collision frame.

The automatic cooling lead screw mechanism for the five-axis linkage machining center of the present invention is provided with a cooling oil pipe in the screw rod, and an oil inlet passage and an oil outlet passage for the cooling oil to flow in and out in the screw rod internal cooling fixing seat, so it can The heat in the screw is taken away to realize the automatic cooling of the screw mechanism.

Description of drawings

Fig. 1 is a schematic structural view of an automatic cooling screw mechanism for a five-axis linkage machining center provided by an embodiment of the present invention.

Fig. 2 is an enlarged view of the rear end of the automatic cooling lead screw mechanism for the five-axis linkage machining center in Fig. 1 .

Fig. 3 is an enlarged view of part A of the automatic cooling screw mechanism for the five-axis simultaneous machining center in Fig. 1 .

Fig. 4 is a schematic diagram of the use state of the automatic cooling lead screw mechanism for the five-axis linkage machining center in Fig. 1 .

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to Fig. 1 to Fig. 4, an embodiment of the present invention provides an automatic cooling screw mechanism for a five-axis linkage machining center, which includes a bearing seat 11, a motor fixing seat 12, a screw 13, a motor 15, a screw internal cooling fixing seat and Cooling oil pipe 16.

Please refer to FIG. 2 , a first screw bearing 112 is disposed in the bearing housing 11 , and the tail end of the screw 13 passes through the first screw bearing 12 and the bearing housing 11 , and protrudes from the tail end of the bearing housing 11 . Please refer to FIG. 3 , a second screw bearing 122 is disposed inside the motor fixing base 12 , and the head end of the screw 13 passes through the second screw bearing 122 and the motor fixing base 12 . The motor 15 is fixed on the motor holder 12, and the motor shaft is connected to the head end of the screw rod 13 through a coupling 21 for driving the screw rod 13 to rotate around the central axis of the screw rod 13 relative to the motor holder 12 and the bearing seat 11.

A moving block 14 is sheathed on the screw rod 13, and the moving block 14 is used for connecting with the driven parts. The moving block 14 is threadedly engaged with the screw rod 13, and the moving block 14 is restricted not to rotate. Therefore, when the screw 13 rotates under the driving of the motor 15, the driving moving block 14 moves linearly on the screw 13, thereby driving the driven parts to move.

The screw 13 is provided with a cooling hole 132 from the tail end to the head end. One end of the cooling hole 132 located at the tail end of the screw 13 is open and the other end is closed. In this embodiment, the other end of the cooling hole 132 extends to the head end of the screw rod 13 and is closed by a plug 131 arranged at the head end of the screw rod 13 .

The cooling oil pipe 16 is inserted into the cooling hole 132 and forms a gap with the inner wall of the cooling hole 132 for the cooling oil to flow out. The screw internal cooling fixing seat is fixed on the bearing seat 11 and surrounds the tail end of the screw rod 13 . An oil inlet passage communicated with the cooling oil pipe 16 and an oil outlet passage communicated with the cooling hole 132 are provided in the screw internal cooling fixing seat.

Please refer to FIG. 1 and FIG. 2 , specifically, in this embodiment, the screw internal cooling fixing seat includes a seat body 17 and a cover body 18 . The seat body 17 is connected to the tail end of the bearing seat 11 and surrounds the tail end of the screw rod 13 . The cover body 18 is connected to the tail end of the seat body 17 , and an oil inlet hole 181 , an oil outlet hole 183 and an oil return cavity 184 are formed on the cover body. The oil inlet hole 181 corresponds to the inlet of the cooling oil pipe 16 , the oil return cavity 183 communicates with the opening of the cooling hole 132 , and the oil outlet hole 183 communicates the oil return cavity 184 with the outside of the cover 18 .

Please refer to FIG. 4 , further, the inlet of the oil inlet hole 181 is connected to the oil inlet pipe 22 , the outlet of the oil inlet hole 181 is connected to the inlet of the cooling oil pipe 16 through the connector 24 , and the outlet of the oil outlet hole 183 is connected to the oil outlet pipe 23 .

During processing, the cooling oil enters from the oil inlet pipe 22, enters the cooling oil pipe 16 through the joint 24, and flows out from the outlet of the cooling oil pipe 16 at the head end of the screw rod 13, and then passes through the cooling hole 132, the oil return cavity 184, and the oil outlet hole. 183 and the oil outlet pipe 23 are discharged to take away the heat in the screw rod 13, thereby reducing the temperature of the screw rod 13 and preventing the screw rod 13 from overheating.

In order to prevent cooling oil from flowing into the bearing housing 11 along the surface of the screw rod 13 from the oil return chamber 184 , a rotary sealing ring 171 is arranged in the seat body 17 , and the inner wall of the rotating sealing ring 171 is closely matched with the outer surface of the tail end of the screw rod 13 . The rotary sealing ring 171 is fixed in the seat body 17 , and the screw rod 13 can rotate in the rotary sealing ring 171 . The outer end surface of at least one rotary sealing ring 171 faces the oil return cavity 184 . Those skilled in the art can understand that the number of the rotating sealing ring 171 should be determined according to the performance of the sealing ring and its working environment, and may be one or multiple.

In order to prevent the cooling oil from leaking from the side surface of the screw internal cooling fixing seat, an O-ring 172 is provided at the connection interface between the cover body 18 and the seat body 17 .

Please refer to Fig. 1 to Fig. 3, in a preferred embodiment, the screw rod 13 is sleeved with an anti-collision frame 19 adjacent to the inner side of the bearing seat 11 and/or the inner side of the motor fixing seat 12, and the anti-collision frame 19 is provided with a direction toward The anti-collision rubber pad 20 of the moving block 14 is used to prevent the moving block 14 from colliding with the bearing seat 11 and the motor fixing seat 12 to cause damage.

The automatic cooling lead screw mechanism for the five-axis linkage machining center of the present invention is provided with a cooling oil pipe in the screw rod, and an oil inlet passage and an oil outlet passage for the cooling oil to flow in and out in the screw rod internal cooling fixing seat, so it can The heat in the screw is taken away to realize the automatic cooling of the screw mechanism.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. a 5-axis machining center is with automatically cooling down screw mechanism, it is characterised in that include that bearing block, motor are fixed Freezing off reservation and oil cooling service pipe in seat, screw rod, motor, screw rod, the head end of described screw rod is arranged in described motor fixing seat, institute The tail end stating screw rod passes described bearing block, and described motor is arranged in described motor fixing seat, with the head end coupling of described screw rod Closing, be used for driving described screw rod to rotate relative to described bearing block and motor fixing seat, described screw rod is offered to head end from tail end Having Cooling Holes, described Cooling Holes to be positioned at the one end open of described screw rod tail end, the other end is closed, and described oil cooling service pipe inserts described In Cooling Holes, and and the inwall of described Cooling Holes between be formed for cooling down the gap of oil outflow, freeze off reservation in described screw rod It is fixed on described bearing block, and is provided with in freezing off reservation in the tail end of described screw rod, described screw rod and described cooling oil The oil inlet passage of pipe connection and the oil discharge passage that connects with described Cooling Holes.

5-axis machining center the most according to claim 1 is with automatically cooling down screw mechanism, it is characterised in that described spiral shell Freeze off reservation in bar and include that pedestal and lid, described pedestal are connected with the tail end of described bearing block, and around the tail of described screw rod End, described lid is connected with the tail end of described pedestal, and described lid is formed fuel feed hole, oil outlet and oil back chamber, described in enter Oilhole is corresponding with the position of the entrance of described oil cooling service pipe, and described oil back chamber connects with the opening of described Cooling Holes, described Oil outlet is by the ft connection of described oil back chamber Yu described lid.

5-axis machining center the most according to claim 2 is with automatically cooling down screw mechanism, it is characterised in that described in enter The entrance of oilhole is connected with oil inlet pipe, and the outlet of described fuel feed hole is connected by the entrance of union joint with described oil cooling service pipe, institute The outlet connection stating oil outlet has flowline.

5-axis machining center the most according to claim 2 is with automatically cooling down screw mechanism, it is characterised in that described Being provided with rotating seal ring in pedestal, the inwall of described rotating seal ring closely cooperates with the outer surface of the tail end of described screw rod, The outer face of at least one described rotating seal ring is towards described oil back chamber.

5-axis machining center the most according to claim 2 is with automatically cooling down screw mechanism, it is characterised in that described lid Body is provided with O-ring seals at the linkage interface of described pedestal.

5-axis machining center the most according to claim 1 is with automatically cooling down screw mechanism, it is characterised in that described spiral shell The head end of bar is provided with plug, and described plug closes described Cooling Holes one end away from described bearing block.

7., according to the 5-axis machining center described in any one of claim 1 to 6 with automatically cooling down screw mechanism, its feature exists In, described screw rod is arranged with bumper frame on the position inside neighbouring described bearing block and/or inside motor fixing seat, described anti- Hit and on frame, be provided with crashproof rubber cushion.