Pipeline structure of numerical control machining tool

Abstract

The utility model discloses a numerical control machine tool pipeline structure, and relates to the technical field of machine tool pipelines, the machine tool pipeline structure comprises a main shaft shell and mounting discs arranged at the two ends of the main shaft shell, and further comprises a shaft core assembly, a bearing assembly, a cooling pipeline assembly and a driving assembly, the inner wall of the pipe groove abuts against a bearing seat. When the rotor rotates, the front bearing and the pipe groove generate heat through friction, the rear bearing and the bearing seat generate heat through friction, oil capable of being cooled by an oil cooler is introduced into the cold oil channel from the oil inlet pipe and then is divided into the cooling pipe and the cold oil branch channel, and cold oil entering the cooling pipe is sprayed to the front bearings on the two sides through the branch pipes to cool the front bearings. And the cold oil entering the cold oil branch channel flows into the bearing seat to cool the rear bearing, and finally flows into the oil cooler to be cooled again, so that the bearing cooling circulation is completed, the damage caused by long-time high temperature of the bearing is avoided, and the service life of the bearing is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to machine tool pipeline technical field, concretely is a numerical control processing machine tool pipeline structure. BACKGROUND

[0002] Numerical control processing machine tool is the automation machine tool of control using digital signal and computer control technology, machine tool pipeline structure includes Z axle pipeline arrangement structure, spindle pipeline connection structure etc., wherein the spindle pipeline connection structure connects key components such as spindle motor, bearing and so on together precisely, forms a stable spindle unit, ordinary spindle bearing lacks cooling pipeline in prior art, leading to bearing generates sustained high temperature when high-speed rotating friction, and bearing long time high temperature can appear damage and deformation, thereby influence the service life of bearing. SUMMARY

[0003] The utility model provides a numerical control processing machine tool pipeline structure has the advantage that the oil cooling bearing is continuously cooled to solve the problem that ordinary spindle pipeline structure lacks cooling pipeline.

[0004] To realize above -mentioned purpose, the utility model provides following technical scheme: a numerical control processing machine tool pipeline structure, including spindle housing and the installation disc of being located at both ends of the spindle housing, still including shaft core subassembly, bearing assembly, cooling pipeline subassembly and drive subassembly, wherein:

[0005] The spindle housing center is equipped with pipe groove, and the bearing seat is abutted on the inner wall of the pipe groove.

[0006] The installation disc includes installation front disc, the installation front disc is welded on the outer side of one end of the spindle housing, the other end of the spindle housing is abutted installation rear disc, and the installation rear disc is fixed tightly with the spindle housing by installation screw, and the bearing seat is welded on one end of the installation rear disc.

[0007] The cooling pipeline subassembly includes oil inlet pipe, and the oil inlet pipe one end sealed connection pipe joint, the pipe joint one end welding in one end of the spindle housing, the pipe joint is connected with the one end of the cold oil passage, and the other end of the cold oil passage is communicated with the cooling pipe, and the cooling pipe both sides are equipped with branch pipe.

[0008] As a preferred technical scheme of the utility model, the bearing assembly includes two front bearings and one rear bearing, the front bearings are symmetrically arranged on both sides of the branch pipe, the rear bearing is provided with a bearing roller, the bearing roller abuts against the bearing seat groove, and the cold oil branch above the bearing roller is communicated with the cold oil passage.

[0009] As a preferred technical scheme of the utility model, the shaft core subassembly includes a pull rod, one end of the pull rod is connected with a tool bit, and the other end is connected with a straight shaft.

[0010] As a preferred technical scheme of the utility model, the pull rod is fixedly connected with the front bearing, the front bearing is provided with a sealing ring on both sides, and the sealing ring is fixed on the outer side of the rotor.

[0011] As a preferred technical scheme of the utility model, the straight shaft is fixedly connected with the rear bearing, and the rear bearing is provided with an encoding wheel on one side.

[0012] As a preferred technical scheme of the utility model, the front bearing and the rear bearing are both provided with a hot oil channel below, and the hot oil channel penetrates the main shaft shell and is connected with the oil outlet pipe.

[0013] As a preferred technical scheme of the utility model, the driving assembly comprises a stator, the stator is installed on the inner wall of the main shaft shell, the stator is arranged on the outer side of the rotor, and the front bearing and the rear bearing are fixedly connected to both ends of the rotor.

[0014] Compared with the prior art, the utility model provides a kind of numerical control processing machine tool pipeline structure, with following beneficial effects: when the rotor of the utility model rotates, the front bearing and pipe groove generate heat by friction, the rear bearing and bearing seat generate heat by friction, and the oil that can be cooled by cold oil machine is passed into cold oil channel from oil inlet pipe, and then is respectively shunted into cooling pipe and cold oil branch, the cold oil in cooling pipe is sprayed to the front bearing on both sides using branch pipe, to cool it, the cold oil in cold oil branch flows into bearing seat, to cool and heat the rear bearing, finally flows into cold oil machine and is cooled again, to complete bearing cooling cycle, avoid damage caused by long time high temperature of bearing, and improve the service life of bearing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is overall structure schematic view of the utility model;

[0016] Figure 2 It is cooling pipeline assembly structure diagram of the utility model;

[0017] Figure 3 It is mounting disc structure schematic view of the utility model;

[0018] Figure 4 It is shaft core assembly structure diagram of the utility model.

[0019] In the figure: 1, main shaft shell; 2, mounting disc; 21, mounting front disc; 22, mounting rear disc; 23, mounting screw; 11, pipe groove; 43, bearing seat; 5, cooling pipeline assembly; 51, oil inlet pipe; 52, pipe joint; 53, cold oil passage; 54, cooling pipe; 55, branch pipe; 4, bearing assembly; 41, front bearing; 42, rear bearing; 421, bearing roller; 56, cold oil branch; 3, shaft core assembly; 31, pull rod; 32, cutter head; 33, straight shaft; 44, sealing ring; 61, rotor; 34, encoder wheel; 57, hot oil passage; 58, oil outlet pipe; 6, driving assembly; 62, stator. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0021] Please refer to Figures 1-4 The utility model discloses a numerical control processing machine tool pipeline structure, including main shaft shell 1 and being located at the both ends of main shaft shell 1 mounting disc 2, still including shaft core assembly 3, bearing assembly 4, cooling pipeline assembly 5 and driving assembly 6, wherein:

[0022] The main shaft shell 1 center is equipped with the pipe groove 11, and the inner wall of the pipe groove 11 is abutted with the bearing seat 43;

[0023] The mounting disc 2 includes the mounting front disc 21, and the mounting front disc 21 is welded on the one end of the outer side of the main shaft shell 1. The other end of the main shaft shell 1 is abutted with the mounting rear disc 22. The mounting rear disc 22 is fastened with the main shaft shell 1 through the mounting screw 23. The bearing seat 43 is welded on one end of the mounting rear disc 22.

[0024] Please refer to the attached Figure 2 The cooling pipeline assembly 5 includes the oil inlet pipe 51. One end of the oil inlet pipe 51 is connected with the pipe joint 52 in airtight mode. One end of the pipe joint 52 is welded on one end of the main shaft shell 1. The pipe joint 52 is connected with one end of the cold oil passage 53. The other end of the cold oil passage 53 is connected with the cooling pipe 54. The cooling pipe 54 is equipped with the branch pipe 55 on both sides.

[0025] Please refer to the attached Figure 4, the bearing assembly 4 comprises two front bearings 41 and one rear bearing 42, the front bearings 41 are symmetrically arranged on both sides of the branch pipe 55, the rear bearing 42 is provided with a bearing roller 421 abutting against a bearing seat 43 groove, a cold oil branch 56 is arranged above the bearing roller 421, the cold oil branch 56 is communicated with the cold oil channel 53, specifically, the front bearing 41 and the rear bearing 42 play a supporting and auxiliary rotating role, and the rear bearing 42 rotates through the bearing roller 421.

[0026] In this embodiment, the cold oil enters from the oil inlet pipe 51, passes into the cold oil channel 53, and then is respectively shunted into the cooling pipe 54 and the cold oil branch 56, the cold oil entering the cooling pipe 54 is sprayed to the front bearings 41 on both sides by the branch pipe 55 to cool them, and the cold oil entering the cold oil branch 56 flows into the bearing seat 43 to cool the rear bearing 42. Embodiment two

[0027] Based on the above embodiment 1, please refer to the attached Figure 2 、 Figure 3 and Figure 4 , the shaft core assembly 3 comprises a pull rod 31, one end of the pull rod 31 is connected with a tool bit 32, and the other end of the pull rod 31 is connected with a straight shaft 33, specifically, the pull rod 31 drives the tool bit 32 to rotate.

[0028] The pull rod 31 is fixedly connected with the front bearing 41, and the front bearing 41 is provided with a sealing ring 44 on both sides, the sealing ring 44 is fixed on the outer side of the rotor 61, specifically, the sealing ring 44 can prevent the cold oil from leaking.

[0029] The straight shaft 33 is fixedly connected with the rear bearing 42, and the rear bearing 42 is provided with a coding wheel 34 on one side, specifically, the coding wheel 34 cooperates with the sensor to realize real-time feedback of the motion state of the main shaft, thereby improving the machining precision.

[0030] The front bearing 41 and the rear bearing 42 are both provided with a hot oil channel 57 below, and the hot oil channel 57 penetrates through the main shaft shell 1 and is communicated with the oil outlet pipe 58.

[0031] The driving assembly 6 comprises a stator 62, the stator 62 is installed on the inner wall of the main shaft shell 1, the stator 62 is arranged on the outer side of the rotor 61, and the rotor 61 is fixedly connected with the front bearing 41 and the rear bearing 42 at both ends.

[0032] In this embodiment, the stator is connected to electricity to generate a rotating magnetic field, the rotor 61 rotates through electromagnetic induction and the interaction of the magnetic field, and the rotor 61 drives the shaft core assembly 3 to rotate under the support of the front bearing 41 and the rear bearing 42.

[0033] The utility model discloses a working principle and use flow: the utility model discloses can be fixed in numerical control machine tool through installing front disc 21 and installing rear disc 22 with main shaft casing 11 with axle core subassembly 3 can be inserted into pipe groove 11 through main shaft casing 11 rear end, subsequently with installing rear disc 21 and installing casing 1 utilize installation screw 23 fixed connection, with oil inlet pipe 51 and oil outlet pipe 58 access oil cooling machine and carry out circulation;

[0034] When the main shaft works, the stator is connected to the power to generate a rotating magnetic field, and the rotor 61 is rotated by electromagnetic induction and the interaction of the magnetic field, and the rotor 61 is rotated under the support of the front bearing 41 and the rear bearing 42, and the cutter head 32 is rotated to carry out the machine tool processing operation.

[0035] When the rotor 61 rotates, the front bearing 41 and the pipe groove 11 generate heat by friction, and the rear bearing 41 and the bearing seat 43 generate heat by friction, the cold oil enters from the oil inlet pipe 51, passes through the cold oil channel 53, and then is respectively shunted into the cooling pipe 54 and the cold oil branch 56, the cold oil entering the cooling pipe 54 is sprayed to the front bearing 41 on both sides by the branch pipe 55, and the front bearing 41 is cooled, the cold oil entering the cold oil branch 56 flows into the bearing seat 43, the rear bearing 42 is cooled and lubricated, the rotating efficiency is improved, the temperature of the cold oil after the bearing is increased, then the cold oil is discharged from the pipe joint 52 and enters the oil outlet pipe 58, is collected, and finally flows into the oil cooling machine to be cooled again, the bearing cooling cycle is completed, the damage caused by the long time high temperature of the bearing is avoided, and the service life of the bearing is improved.

Claims

1. A piping structure for a CNC machining tool, comprising a spindle housing (1) and mounting plates (2) disposed at both ends of the spindle housing (1), characterized in that, It also includes a shaft core assembly (3), a bearing assembly (4), a cooling pipe assembly (5), and a drive assembly (6), wherein: The spindle housing (1) has a groove (11) at its center, and the inner wall of the groove (11) abuts against a bearing seat (43). The mounting plate (2) includes a front mounting plate (21), which is welded to the outer side of one end of the spindle housing (1). The other end of the spindle housing (1) abuts against the rear mounting plate (22), which is fastened to the spindle housing (1) by mounting screws (23). The bearing seat (43) is welded to one end of the rear mounting plate (22). The cooling pipeline assembly (5) includes an oil inlet pipe (51), one end of which is sealed to a pipe joint (52), one end of which is welded to one end of the spindle housing (1), the pipe joint (52) is connected to one end of a cold oil passage (53), the other end of which is connected to a cooling pipe (54), and the cooling pipe (54) has branch pipes (55) on both sides.

2. The piping structure of a CNC machine tool according to claim 1, characterized in that: The bearing assembly (4) includes two front bearings (41) and one rear bearing (42). The front bearings (41) are symmetrically arranged on both sides of the branch pipe (55). The rear bearing (42) is provided with bearing rollers (421). The bearing rollers (421) abut against the groove of the bearing seat (43). A cold oil channel (56) is provided directly above the bearing rollers (421). The cold oil channel (56) is connected to the cold oil passage (53).

3. The piping structure of a CNC machine tool according to claim 2, characterized in that: The shaft assembly (3) includes a pull rod (31), one end of which is connected to the cutter head (32), and the other end is connected to the straight shaft (33).

4. The piping structure of a CNC machine tool according to claim 3, characterized in that: The pull rod (31) is fixedly connected to the front bearing (41), and the front bearing (41) is provided with sealing rings (44) on both sides. The sealing rings (44) are fixed on the outer side of the rotor (61).

5. The piping structure of a CNC machine tool according to claim 4, characterized in that: The straight shaft (33) is fixedly connected to the rear bearing (42), and an encoding wheel (34) is provided on one side of the rear bearing (42).

6. The piping structure of a CNC machine tool according to claim 2, characterized in that: Hot oil channels (57) are provided below the front bearing (41) and the rear bearing (42), and the hot oil channels (57) pass through the spindle housing (1) and connect to the oil outlet pipe (58).

7. The piping structure of a CNC machine tool according to claim 1, characterized in that: The drive assembly (6) includes a stator (62), which is mounted on the inner wall of the spindle housing (1). The stator (62) is located on the outside of the rotor (61), and the front bearing (41) and the rear bearing (42) are fixedly connected to both ends of the rotor (61).

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