CN204339407U - The built-in ram of spindle motor - Google Patents

Abstract

The utility model relates to a ram with a built-in spindle motor. The method mainly solves the problems of large ram size, complicated assembly process and low transmission efficiency of the existing machine tool. It is characterized in that: the main shaft motor (6) and the multi-speed gearbox (5) are placed inside the ram (2), and the main shaft motor (6) is provided with a motor cooling spiral groove (16), the said The output shaft of the multi-speed gearbox (5) is connected to the milling spindle (3), and the milling spindle (3) is provided with a tension mechanism (4) inside, and the milling spindle (3) is connected to the milling spindle cooling sleeve ( 3), the outer wall of the milling spindle cooling jacket (3) is provided with a spindle cooling spiral groove (12). The built-in ram of the spindle motor saves space, has low manufacturing cost, can improve transmission efficiency, and improves the running stability of the spindle.

Description

Spindle motor built-in ram

technical field

The utility model relates to the field of machine tools, in particular to a ram with a built-in spindle motor.

Background technique

Machine tool rams are one of the important components of machine tools such as vertical lathes, gantry boring and milling machines, and floor boring and milling machines. The traditional ram structure is that the motor and gearbox are placed outside the ram. The disadvantage is that it is large in size and difficult to process and assemble. The process is complicated, the transmission efficiency is low, and the efficiency loss is relatively large. The general efficiency is 90%, and the manufacturing cost is relatively high.

Contents of the invention

In order to overcome the shortcomings of the existing machine tool rams with large size, complex assembly process and low transmission efficiency, the utility model provides a ram with a built-in spindle motor, which saves space, has low manufacturing cost, and can improve Transmission efficiency, improve the stability of the spindle operation.

The technical scheme of the utility model is: a ram with a built-in spindle motor, including a ram, a spindle motor, and a multi-speed gearbox connected to the output shaft of the spindle motor. Inside the pillow, and the outside of the spindle motor is provided with a motor cooling spiral groove, the output shaft of the multi-speed gearbox is connected to the milling spindle, the inside of the milling spindle is provided with a tensioning mechanism, and the outside of the milling spindle is connected to the cooling of the milling spindle through a bearing. There is a spindle cooling spiral groove on the outer wall of the milling spindle cooling sleeve.

An electromagnetic shifting device is provided between the main shaft motor and the multi-speed gearbox. the

The utility model has the following beneficial effects: due to the adoption of the above scheme, the main shaft motor and the reducer are installed inside the ram, which saves space, has a compact structure size, simple appearance, and can improve transmission efficiency; the outer walls of the main shaft motor and the main shaft cooling jacket are provided Spiral cooling groove, the cooling liquid can forcefully cool the spindle motor, spindle and gearbox through the cooling groove, which ensures the accuracy of the spindle and ensures that the temperature of the spindle is always controlled within the range of 25-35 degrees Celsius when the spindle is running at high speed, reducing the The thermal deformation of the ram is reduced, and the stability of the spindle is improved; the milling spindle is equipped with an automatic tensioning device, which can realize the automatic grasping and automatic loosening of the milling tool through the control of the electrical system.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In the figure 1-milling spindle cooling jacket, 2-ram, 3-milling spindle, 4-tension mechanism, 5-multi-speed gearbox, 6-spindle motor, 7-cooling water pipe, 8-lubricating oil pipe, 9-method Blue plate, 10-spindle bearing, 11-lock nut, 12-spindle cooling spiral groove, 13-sealing ring A, 14-electromagnetic shifting device, 15-sealing ring B, 16-motor cooling spiral groove, 17-hydraulic pressure Oil pipe, 18-cable, 19-high pressure air pipe, 20-tool cooling pipe.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Fig. 1, a kind of main shaft motor built-in ram comprises a ram 2, a main shaft motor 6, and the output shaft of the main shaft motor 6 is connected with a multi-speed gearbox 5, and between the main shaft motor 6 and the multi-speed gearbox 5 Equipped with an electromagnetic shifting device 14, the multi-speed gearbox 5 can switch between different speeds to meet different cutting requirements. The main shaft motor 6 and the multi-speed gearbox 5 are all placed inside the ram 2, and the main shaft motor 6 is provided with a motor cooling spiral groove 16, and the outer wall of the main shaft motor 6 at both ends of the motor cooling spiral groove 16 is inlaid with a sealing ring B15 , can prevent the cooling fluid loss in the motor cooling helical groove 16. The output shaft of the multi-speed gearbox 5 is connected with a milling spindle 3, and the inside of the milling spindle 3 is provided with a tensioning mechanism 4, which can realize automatic grasping and automatic loosening of milling tools through electrical system control. The outside of the milling spindle 3 is connected to the milling spindle cooling jacket 1 through the spindle bearing 10, and the outer wall of the milling spindle cooling jacket 1 is provided with a spindle cooling spiral groove 12. Similarly, the outer wall of the milling spindle cooling jacket 1 at both ends of the spindle cooling spiral groove 12 is inlaid with seals. Circle A13.

When installing, install the main shaft bearing 10 on the milling main shaft 3, lock it with the lock nut 11, put the milling main shaft and the bearing together into the milling main shaft cooling sleeve 1, press the main shaft through the flange 9, and pre- Leave the free play of the bearing and fix it. The milling spindle 3 and the cooling jacket 1 of the milling spindle are put into the installation hole of the ram 2 together, and the cooling jacket 1 of the milling spindle is fixed with screws, and the sealing ring A13 is installed in the sealing groove of the cooling jacket 1 of the milling spindle, one at each end. The multi-speed gearbox 5 is installed on the rear end of the milling spindle 3, and is connected by an involute spline. The servo spindle motor 6 is installed on the rear end of the multi-speed gearbox 5 to provide power for the system. The servo spindle motor 6 is externally mounted. Sealing ring B15 is arranged, and a connecting plate is equipped with at the main shaft motor 6 rear end, and cooling water pipe 7, lubricating oil pipe 8, hydraulic oil pipe 17, cable 18, high-pressure air pipe 19 and cutter cooling pipe 20 are housed on the connecting plate. During work, the cable 18 provides power and control signals to the spindle motor 6. After the spindle motor 6 is started, it drives the multi-speed gearbox 5 to work, and the output end of the multi-speed gearbox 5 drives the milling spindle 3 to rotate to work; the cooling water pipe 7 feeds the coolant , the coolant enters the motor cooling spiral groove 16 and the spindle cooling spiral groove 12 through the internal pipeline of the ram to cool the milling spindle cooling jacket 1, the milling spindle 3, the multi-speed gearbox 5 and the spindle motor 6; the hydraulic oil pipe 17 leads to the hydraulic pressure After oiling, the tensioning mechanism 4 is driven to tighten and relax the cutting tool; the electromagnetic shifting device 14 moves after receiving the control signal of the cable 18 to realize the transformation of different gears; when the ram needs to change the tool, the high-pressure air pipe 19 is the milling spindle 3 and the end surface provide high-pressure air to clean the milling spindle 3 and the end surface. After cleaning, the hydraulic oil in the hydraulic oil pipe 17 drives the tensioning mechanism 4 to realize the clamping of the tool.

The main shaft motor and reducer are installed inside the ram, which saves space, has a compact structure and simple appearance; the built-in ram of the main shaft motor can improve the transmission efficiency, and the efficiency is increased from 90% to 95% of the original traditional ram; the transmission accuracy is improved , the radial runout at 300mm of the spindle end face can reach 0.005mm; improve the stability of the spindle operation, realize the high-speed rotation of the spindle, and the maximum speed can reach 6000rpm; the cooling of the ram adopts circulating cooling, and the temperature of the cooled ram can be controlled at 35 degrees Celsius Next, the thermal deformation of the ram due to the heating of the main shaft is reduced.

Claims (2)

1. the built-in ram of spindle motor, comprise ram (2), spindle motor (6), spindle motor (6) output shaft is connected with multi-speed gear box (5), it is characterized in that: it is inner that described spindle motor (6) and multi-speed gear box (5) are all placed in ram (2), and spindle motor (6) outside is provided with motor cooling spiral groove (16), described multi-speed gear box (5) output shaft is connected with milling spindle (3), described milling spindle (3) inside is provided with tensioning mechanism (4), milling spindle (3) outside is connected with milling spindle coolant jacket (3) by bearing, milling spindle coolant jacket (3) outer wall has main shaft cooling spiral groove (12).

2. the built-in ram of spindle motor according to claim 1, is characterized in that: be provided with electromagnetic shifting device (14) between described spindle motor (6) and multi-speed gear box (5).