Spindle box structure of boring and milling machine

Abstract

A boring and milling machine spindle box structure is characterized in that a boring shaft is transversely arranged in the center of a smooth pillow, a milling shaft is arranged outside the boring shaft, a Latin pull rod is arranged in the milling shaft, and the tail of the Latin pull rod is connected with a broach hydraulic cylinder; a permanent magnet motor is mounted in the round ram and located on the rear side of the front-end flange, an outer rotor of the permanent magnet motor is fixedly connected with the round ram, and an inner rotor of the permanent magnet motor is fixedly connected with the milling spindle; a middle supporting flange is installed at the position, located at the rear end of the permanent magnet motor, of the boring shaft through a second bearing, the two ends of a second ball screw are installed on the middle supporting flange and the round sleeper respectively, two ball screw nuts are installed on the bracket, and the driving end of the second ball screw is connected with a second servo motor. The two ends of the first ball screw are fixed to the spindle box body, the driving end of the first ball screw is connected with the first servo motor, and a nut of the first ball screw is fixedly connected with the smooth pillow. The permanent magnet motor is adopted to directly drive the main shaft, so that a transmission chain is simplified, power transmission is more direct, gaps in the transmission chain are eliminated, and transmission precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to machine tool technical field. BACKGROUND

[0002] The boring and milling machine is a kind of processing equipment commonly used in processing industry, combines two functions of boring machine and milling machine, makes processing efficiency higher, precision better, greatly improves product quality and labor efficiency.

[0003] The traditional structure of the boring and milling machine spindle box is generally that motor is connected to gearbox, then drives spindle, and the structure is complex, assembly parts are many, the structure is complex, transmission precision is low, cost is high and assembly difficulty is high. SUMMARY

[0004] In order to solve the above problems existing in the traditional boring and milling machine spindle box driving structure of gearbox, the utility model provides a boring and milling machine spindle box structure.

[0005] The utility model discloses a boring and milling machine spindle box structure, the inside horizontal through installation round pillow 3 in main shaft case 1, the boring shaft 7 is arranged in the center of round pillow 3 horizontally, the boring shaft 7 outside is arranged milling shaft 6, and the milling shaft 6 is arranged Latin pull rod 8, and Latin pull rod 8 tail connects broach hydraulic cylinder 42;The front end flange 4 is installed through the first bearing 9 at the front end of milling shaft 6, and the front end flange 4 is fixedly installed on round pillow 3, and the permanent magnet motor 32 is installed in the rear side of front end flange 4 in round pillow 3, and the outer rotor of permanent magnet motor 32 is fixedly connected with round pillow 3, and the inner rotor of permanent magnet motor 32 is fixedly connected with milling shaft 6;The intermediate support flange 35 is installed through the second bearing 14 at the rear end of boring shaft 7, and the intermediate support flange 35 is fixedly connected with round pillow 3;The bracket 38 is installed through the third bearing 24 at the tail of boring shaft 7, and the second ball screw 21 is installed on the intermediate support flange 35 and round pillow 3 respectively at both ends, and the second ball screw nut 25 of second ball screw 21 is installed on bracket 38, and the driving end of second ball screw 21 is connected with second servo motor 29;The first ball screw 12 is fixed on main shaft case 1 respectively at both ends, and the driving end of first ball screw 12 is connected with first servo motor 23, and the first ball screw nut 18 of first ball screw 12 is fixedly connected with round pillow 3.

[0006] The rear end cover 40 is installed at the rear end of round pillow 3, one end of guide shaft 36 is installed on intermediate support flange 35, the other end of guide shaft 36 is installed on rear end cover 40 through guide shaft seat 41, guide sleeve 39 is installed on bracket 38, and guide shaft 36 is installed on bracket 38 through guide sleeve 39.

[0007] The first circular inclined iron 2 and second circular inclined iron 37 are installed between the inside of the front and rear ends of main shaft case 1 and round pillow 3.

[0008] The first inner spacer sleeve 10 and the cooling sleeve 11 are arranged between the front flange 4 and the milling shaft 6.

[0009] An outer spacer sleeve 34 is arranged between the outer edge of the intermediate support flange 35 and the outer rotor of the permanent magnet motor 32 in the inside of the round pillow 3. A sealing flange 13 is arranged on the milling shaft 6 at the front side of the intermediate support flange 35.

[0010] A front end sealing flange 5 is arranged on the front end of the milling shaft 6.

[0011] The driving end of the first ball screw 12 is connected with the first servo motor 23 through the first coupling 20 and the first planetary reducer 22. The second ball screw 21 is connected with the second servo motor 29 through the second coupling 27 and the second planetary reducer 28.

[0012] The boring and milling machine spindle box structure of the utility model adopts a permanent magnet motor to directly drive a spindle, removes complicated mechanisms, simplifies the transmission chain through the direct drive structure, directly transmits power, eliminates the gap in the transmission chain, and improves transmission accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a main view sectional structure drawing of the boring and milling machine spindle box of the utility model.

[0014] In the drawing: 1, spindle box body, 2, first circular inclined iron, 3, round pillow, 4, front flange, 5, front end sealing flange, 6, milling shaft, 7, boring shaft, 8, Latin pull rod, 9, first bearing, 10, first inner spacer sleeve, 11, cooling sleeve, 12, first ball screw, 13, sealing flange, 14, second bearing, 15, second bearing spacer sleeve, 16, second locking nut, 17, nut seat, 18, first ball screw nut, 19, bearing seat box body, 20, first coupling, 21, second ball screw, 22, first planetary reducer, 23, first servo motor, 24, third bearing, 25, second ball screw nut, 26, second bearing seat box body, 27, second coupling, 28, second planetary reducer, 29, second servo motor, 30, first bearing spacer sleeve, 31, first locking nut, 32, permanent magnet motor, 33, second inner spacer sleeve, 34, outer spacer sleeve, 35, intermediate support flange, 36, guide shaft, 37, second circular inclined iron, 38, bracket, 39, guide sleeve, 40, rear end cover, 41, guide shaft seat, 42, broach hydraulic cylinder. DETAILED DESCRIPTION

[0015] The boring and milling machine spindle box structure of the utility model is as shown in Figure 1As shown, the spindle box 1 is fixed on the column guide, the spindle box 1 is internally transversely installed with the round slide block 3, the round slide block 3 is centrally transversely provided with the boring shaft 7, the boring shaft 7 is externally provided with the milling shaft 6, the milling shaft 6 is internally provided with the Latin pull rod 8, the Latin pull rod 8 is connected with the broach hydraulic cylinder 42. The first circular inclined iron 2 and the second circular inclined iron 37 are fixed on the spindle box 1 by screws, the round slide block 3 is clamped and fixed by the inclined surface, so that the slide block can only move axially and cannot move radially. The front end flange 4 is installed at the front end of the milling shaft 6 through the first bearing 9, the front end flange 4 is fixed on the round slide block 3 by screws, and the first inner spacer sleeve 10 and the cooling sleeve 11 are internally arranged between the front end flange 4 and the milling shaft 6. The front end sealing flange 5 is installed at the front end of the milling shaft 6, and the outer ring of the first bearing 9 is pressed tightly by the front end sealing flange 5. The milling shaft 6 is fixed on the front end flange 4 by the first bearing spacer sleeve 30 and the first locking nut 31. The outer rotor of the permanent magnet motor 32 is fixed with the round slide block 3, and the inner rotor is fixed with the milling shaft 6. The outer spacer sleeve 34 is arranged between the outer edge of the intermediate support flange 35 and the outer rotor of the permanent magnet motor 32 on the inner side of the round slide block 3. The sealing flange 13 is installed on the milling shaft 6 on the front side of the intermediate support flange 35. The second inner spacer sleeve 33 is arranged between the sealing flange 13 and the inner stator of the permanent magnet motor 32 on the milling shaft 6. The outer spacer sleeve 34 and the intermediate support flange 35 fix the outer rotor of the permanent magnet motor 32, and the second inner spacer sleeve 33 and the sealing flange 13 fix the inner rotor. The second bearing 15, the second bearing spacer sleeve 15 and the second locking nut 16 support the rear end of the milling shaft 6. The second circular inclined iron 37 supports the rear end of the round slide block 3. One end of the second ball screw 21 is fixed on the intermediate support flange 35 by the nut seat 17, and the other end is fixed on the round slide block 3 by the bearing seat box 26. The second coupling 27, the second planetary reducer 28 and the second servo motor 29 are sequentially connected to the driving end of the second ball screw 21. The second ball nut 25 is connected with the bracket 38. The bracket 38 is installed on the tail of the boring shaft 7 by the third bearing 24. The rear end cover 40 is fixed on the round slide block 3 by screws. The guide shaft 36 is fixed on the intermediate support flange 35 and connected with the bracket 38 to slide through the guide sleeve 39. The guide shaft seat 41 is fixed on the rear end cover 40 and supports the other end of the guide shaft 36. One end of the first ball screw 12 is fixed on the spindle box 1, and the other end is fixed on the spindle box 1 by the bearing seat box 19. The driving end of the first ball screw 12 is sequentially connected with the first coupling 20, the first planetary reducer 22 and the first servo motor 23. The first ball nut 18 is fixed on the round slide block 3 by screws.

[0016] Working principle: the permanent magnet motor 32 is electrified, the rotor rotates, drives the milling shaft 6 and the boring shaft 7 to rotate, and carries out milling processing.Latin pull rod 8 moves forward and backward through the rear hydraulic cylinder 42, and carries out clamping tool.The second servo motor 29 drives the second planetary reducer 27, the second coupling 28, drives the second ball screw 21 to rotate, makes the second ball screw nut 25 move, and pushes the bracket 38 and the boring bar 7 to move forward and backward.The first servo motor 23 drives the first planetary reducer 22, the first coupling 20, makes the first ball screw 12 rotate, pushes the first ball screw nut 18 to move, and the first ball screw nut 18 drives the round slide block 3 to move forward and backward.

[0017] The utility model is described through the embodiment, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model.In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model.Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the utility model.

Claims

1. A boring and milling machine spindle box structure, characterized by: The main shaft box (1) is internally transversely installed with a round pillow block (3), the center of the round pillow block (3) is transversely provided with a boring shaft (7), the outer side of the boring shaft (7) is provided with a milling shaft (6), the milling shaft (6) is internally provided with a Latin pull rod (8), the tail of the Latin pull rod (8) is connected with a broach hydraulic cylinder (42); the front end of the milling shaft (6) is installed with a front end flange (4) through a first bearing (9), the front end flange (4) is fixedly installed on the round pillow block (3), a permanent magnet motor (32) is installed on the rear side of the front end flange (4) in the round pillow block (3), the outer rotor of the permanent magnet motor (32) is fixedly connected with the round pillow block (3), and the inner rotor of the permanent magnet motor (32) is fixedly connected with the milling shaft (6); the boring shaft (7) is installed with an intermediate support flange (35) through a second bearing (14) on the rear end of the permanent magnet motor (32), and the intermediate support flange (35) is fixedly connected with the round pillow block (3); the tail of the boring shaft (7) is installed with a bracket (38) through a third bearing (24), the two ends of a second ball screw (21) are respectively installed on the intermediate support flange (35) and the round pillow block (3), a second ball screw nut (25) of the second ball screw (21) is installed on the bracket (38), and the driving end of the second ball screw (21) is connected with a second servo motor (29); the two ends of a first ball screw (12) are respectively fixed on the main shaft box (1), the driving end of the first ball screw (12) is connected with a first servo motor (23), and a first ball screw nut (18) of the first ball screw (12) is fixedly connected with the round pillow block (3).

2. The boring and milling machine spindle box structure according to claim 1, characterized in that: The rear end of the round pillow block (3) is installed with a rear end cover (40), one end of a guide shaft (36) is installed on the intermediate support flange (35), the other end of the guide shaft (36) is installed on the rear end cover (40) through a guide shaft seat (41), and a guide sleeve (39) is installed on the bracket (38), and the guide shaft (36) is installed on the bracket (38) through the guide sleeve (39).

3. The boring and milling machine spindle box structure according to claim 1, characterized in that: The inner sides of the front and rear ends of the main shaft box (1) and the round pillow block (3) are installed with a first circular inclined iron (2) and a second circular inclined iron (37).

4. The boring and milling machine spindle box structure according to claim 1, characterized in that: The first inner spacer sleeve (10) and the cooling sleeve (11) are installed between the front end flange (4) and the milling shaft (6).

5. The boring and milling machine spindle box structure according to claim 1, characterized in that: The outer spacer sleeve (34) is arranged between the outer edge of the intermediate support flange (35) and the outer rotor of the permanent magnet motor (32) on the inner side of the round pillow block (3), the sealing flange (13) is installed on the milling shaft (6) on the front side of the intermediate support flange (35), and the second inner spacer sleeve (33) is arranged between the sealing flange (13) and the inner stator of the permanent magnet motor (32) on the milling shaft (6).

6. The boring and milling machine spindle box structure according to claim 1, characterized in that: The front end of the milling shaft (6) is installed with a front end sealing flange (5).

7. The boring and milling machine spindle box structure according to claim 1, characterized in that: The driving end of the first ball screw (12) is connected with the first servo motor (23) through the first coupling (20) and the first planetary reducer (22), and the second ball screw (21) is connected with the second servo motor (29) through the second coupling (27) and the second planetary reducer (28).

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