CN110561123A - Rotor large barrel inner wall drilling and tapping mechanism - Google Patents

Abstract

The invention discloses a drilling and tapping mechanism on the inner wall of a large rotor cylinder, which realizes indexing and positioning of the centripetal holes in the rotor cylinder by adopting a turntable; at the same time, realizes the upper and lower working points of the group holes of the rotor cylinder through a ram Positioning, up and down fast feed functions, setting up several multi-hole drilling rigs, can realize high-speed drilling of several centripetal holes on the inner cylinder at the same time according to the design angle, rigid tapping of holes and other functions, and its drilling efficiency has been improved. Double the improvement, the processing quality is guaranteed.

Description

A Drilling and Tapping Mechanism for the Inner Wall of a Large Rotor Cylinder

technical field

The invention relates to the technical field of wind power generator stator processing and manufacturing, in particular to a drilling and tapping mechanism for the inner wall of a large rotor cylinder.

Background technique

At present, in the field of wind power generators in my country, the direct-drive wind power generator rotor generally uses a screw-fixed type to fix its magnetic cylinder. The screw-fixed type has the following characteristics: (1) It is simple to manufacture, and only needs lathe processing and drilling and tapping. , (2) There are many threaded holes on the inner cylinder of the rotor, and the phases of each circle from top to bottom are different, and the workload is large;

However, at present, the threaded holes on the inner cylinder of the rotor are processed by gantry milling and drilling, one hole is drilled one by one, and the tapping is manually tapped. The production efficiency is low, and the centripetal difference of manual tapping threaded holes cannot be guaranteed. Precision of threaded holes.

Contents of the invention

In order to overcome the above disadvantages, the present invention provides a drilling and tapping mechanism for the inner wall of a large rotor cylinder.

A drilling and tapping mechanism for the inner wall of a large rotor cylinder, including claws, a rotary table, and a large rotor cylinder placed on the rotary table, as well as a ram and several drilling heads, each of which is connected with a It is a numerically controlled feeding device for controlling the feed of the drilling head; the jaws are set above the turntable, and both sides of the claws are detachably connected to the turntable through T screws and nuts; the ram is located inside the large cylinder of the rotor. The bottom of the ram is provided with connecting blocks equal to the number of drilling heads, and each connecting block is connected with a drilling head by fastening bolts.

According to a preferred solution of the present invention, the claws are fixed on the turntable by T-shaped screws.

According to a preferred solution of the present invention, the drilling head includes a main shaft, an ER chuck and a cemented carbide drill, the main shaft is controlled by a first servo motor to rotate, the head of the main shaft is fixedly connected to the ER chuck, and the cemented carbide drill Fastened to ER collets.

According to a preferred solution of the present invention, several drilling heads are in the same plane, and the central angle between two adjacent multi-hole drills is 6 degrees.

According to a preferred solution of the present invention, the plurality of drilling heads are connected to the connecting block through a plurality of bolts, and the connecting block is connected and locked with the ram through a pull nail.

The beneficial effects of the present invention are: through the cooperation of the ram and several drilling heads, each drilling positioning point can complete the high-speed drilling and tapping of several centripetal holes at one time, and the drilling efficiency has been improved several times. The improvement solves the multi-hole drilling of each positioning point of the holes arranged up and down centripetally in the cylinder, and also solves the multi-hole tapping of each positioning point of the holes arranged up and down centripetally in the cylinder, which improves the processing efficiency and product quality. quality.

Description of drawings

The invention will be illustrated by way of example with reference to the accompanying drawings, in which:

Fig. 1 is a sectional view of the present invention:

Fig. 2 is a schematic diagram of a numerically controlled feeding device of the present invention;

Fig. 3 is the schematic diagram of two adjacent drilling heads;

Among them: large rotor cylinder 1, ram 2, connecting block 3, fastening bolt 4, drilling head 5; carbide drill 6; ER chuck 7, claw 8, T-shaped screw 9, nut 10, turntable 11. The first servo motor 12, the numerical control feeding device 13, the driving wheel 14, the synchronous belt 15, the main shaft 16, the screw mandrel 17, the slider 18, the driven wheel 19, and the second servo motor 20.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "set with", "connected", etc. should be understood in a broad sense, such as "connected", which may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figure 1, a drilling and tapping mechanism for the inner wall of a large rotor cylinder includes claws 8, a rotary table 11, and a large rotor cylinder 1 placed on the rotary table 11, as well as a ram 2 and several drilling heads. 5. Each drilling head 5 is connected with a numerical control feeding device 13 for controlling the feeding of the drilling head.

As shown in Figure 2, the drilling head 5 includes a main shaft 16, an ER chuck 7 and a cemented carbide drill 6, the head of the main shaft 16 is fixedly connected with the ER chuck 7, and the cemented carbide drill 6 is fixed on the ER chuck 7 On, described numerical control feeding device comprises driving wheel 14, driven wheel 19, synchronous belt 15, screw mandrel 17, slide block 18 and second servomotor 20; Driven wheel 19 is connected with main shaft 16, first servomotor 12 output shafts Connected with the driving wheel 14, the driving wheel 14 and the driven wheel 19 are connected by a synchronous belt 15. When the first servo motor 12 rotates, the driving wheel 14 drives the driven wheel 19 to rotate, and then drives the main shaft 16 to rotate, and the main shaft 16 drives the drilling head 5 Do drilling work.

The second servo motor 20 is arranged below the drilling head 5, the output shaft of the second servo motor 20 is fixedly connected with the screw mandrel 17, the lower part of the slider 18 is provided with a threaded hole engaged with the screw mandrel 17, and the screw mandrel 17 passes through the threaded hole ; The main shaft 16 passes through the upper part of the slider 18, and a bearing is provided between the main shaft and the slider. When the second servo motor 20 rotates forward or reversely, it drives the screw mandrel 17 to rotate, and the slide block moves back and forth, thereby driving the drilling head to feed.

The claws 8 are arranged above the turntable 11, and both sides of the claws 8 are detachably connected to the turntable 11 through T screws 9, and the claws 8 are fixed on the turntable 11 by T screws 9; The rotary table 11 can achieve indexing and positioning. At the same time, the claws 8 and the rotary table 11 remain fixed to ensure the support and fixation of the large rotor body 1. The two sides of the claws 8 are fixed, and the large rotor body can be adjusted by the movement of the claws. 1 for loading and unloading.

The ram is located inside the large cylinder of the rotor, the connecting block 3 is arranged at the bottom of the ram 2, and the ram 2 and the connecting block 3 are locked and connected by pull rivets, and each connecting block 3 is connected by fastening bolts 4 and A drilling head 5 is detachably connected for easy replacement and maintenance. As shown in FIG. 3 , several drilling heads 5 are in the same plane, and the central angle between two adjacent drilling heads 5 is 6 degrees.

The large rotor cylinder 1 is a steel piece, so a cemented carbide drill bit 6 is used. By setting the first servo motor 12, the speed can be controlled and the position accuracy can be guaranteed. The drilling head 5 can realize drilling and rigid tapping through the numerical control feeding device 13. The drilling centers are located on the same plane and distributed parallel to the inner wall of the large rotor cylinder 1, so as to ensure that the functions of high-speed drilling of several centripetal holes on the inner cylinder and rigid tapping of the holes can be realized at the same time according to the design angle. The beveling head 5 is formed as a whole through the connecting block 3, which can reduce errors caused by vibration during drilling, and improve processing efficiency and product quality.

The above is based on the inspiration of the present invention. Through the above description, relevant workers can make various changes and modifications within the scope of not deviating from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (5)

1. A drilling and tapping mechanism on the inner wall of a large rotor cylinder, characterized in that it includes claws (8), a turntable (11) and a large rotor cylinder (1) placed on the turntable (11), and also includes a The ram (2) and some drilling heads (5), each connected with a numerical control feeding device (13) for controlling the feed of the drilling head after each drilling head (5); the jaws (8) It is arranged above the turntable (11), and both sides of the claw (8) are detachably connected to the turntable (11) through T screws (9) and nuts (10); the ram (2) is located on the large cylinder of the rotor (1 ) inside, at the bottom of the ram (2) there are connecting blocks (3) equal in number to the drilling heads (5), and each connecting block (3) is connected to a drilling head (5) through fastening bolts (4 )connect. 2. A drilling and tapping mechanism for the inner wall of a large rotor cylinder according to claim 1, characterized in that the claw (8) is fixed on the turntable (11) by T-shaped screws (9) and nuts (10). )superior. 3 . The drilling and tapping mechanism for the inner wall of the large rotor cylinder according to claim 1 , wherein the ram ( 2 ) and the connecting block ( 3 ) are connected and locked by pull rivets. 4 . 4. A drilling and tapping mechanism for the inner wall of a large rotor cylinder according to claim 1, wherein the drilling head (5) includes a main shaft (16), an ER chuck (7) and a carbide drill (6), the main shaft (16) is controlled to rotate by the first servo motor (12), the head of the main shaft (16) is fixedly connected with the ER chuck (7), and the cemented carbide drill bit (6) is fixed on the ER chuck (7) superior. 5. A drilling and tapping mechanism for the inner wall of a large rotor cylinder according to claim 1, characterized in that, several drilling heads (5) are in the same plane, and the distance between two adjacent drilling heads (5) The central angle is 6 degrees.