CN105196602A - Multi-motor servo direct-driven type friction brake applicable to mechanical press - Google Patents

Abstract

A multi-motor servo direct-drive friction brake suitable for mechanical presses, including four direct-drive motors, the four direct-drive motors are connected to the upper body through a cross fixing plate, the screw of the direct-drive motor is connected to the first One friction disc is connected, the first friction disc is connected to the connecting shaft, the second friction disc is connected to the upper fuselage, the transmission shaft is connected to the upper fuselage through rolling bearings, and the brake disc is connected to the right end of the transmission shaft, more than two The friction block is evenly inlaid on the brake disc, and the friction block is in contact with the first friction disc and the second friction disc respectively during braking, and the electromagnetic servo direct drive motor is used as the power source of friction braking. When braking, the direct drive motor is controlled to work, and the direct drive motor pushes the first friction disc to move to the right through the screw, and presses the inlaid friction block to the second friction disc for braking. The present invention has the advantages of simple structure, heat dissipation Good, high energy utilization rate, flexible action, convenient operation and low cost.

Description

A multi-motor servo direct-drive friction brake suitable for mechanical presses

technical field

The invention belongs to the technical field of mechanical presses, in particular to a multi-motor servo direct-drive friction brake suitable for mechanical presses.

Background technique

At present, there are three types of brakes commonly used on presses: disc type, belt type and brake shoe type. Disc brakes are divided into floating insert type and disc type. Band brakes are divided into eccentric band brakes and pneumatic band brakes. At present, brake shoe brakes are not used much. The traditional pneumatic brake generally uses compressed air to brake when it is in motion. This kind of brake system has a complicated structure and is inconvenient to operate. In order to increase the air pressure during braking, various valves and air compressors must be equipped, which increases the production cost.

And the band brake is due to some shortcomings caused by its own structure, many of which have unsatisfactory use effects. The uneven pressure between the band brake and the drum causes uneven wear of the brake band and rapid wear of the sliding part of the band. The contact stress at the joint between the hub and the eccentric shaft is large, which will cause rapid wear of the hub and the eccentric shaft. When the number of cooling ribs is small or the separation is unreasonable, the brake drum cannot be cooled satisfactorily.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a multi-motor servo direct-drive friction brake suitable for mechanical presses, which has the advantages of simple structure, high energy utilization rate, convenient operation and low cost.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A multi-motor servo direct-drive friction brake suitable for mechanical presses, including four direct-drive motors 1, the four direct-drive motors 1 are evenly arranged and installed on a cross fixing plate 3 with a drive shaft 6 as the centerline, The cross fixing plate 3 is connected on four evenly distributed first connecting shafts 17, and the leftmost end of the first connecting shaft 17 is connected on the upper body 9,

The screw 1-1 of the direct drive motor 1 is connected to the first friction disc 15, the first friction disc 15 is connected to the first connecting shaft 17 through the first sliding bearing 16, and the second friction disc 12 is connected to the upper body 9 ,

The transmission shaft 6 is connected to the upper body 9 through the rolling bearing 10, the brake disc 4 is connected to the right end of the transmission shaft 6, and more than two friction blocks 13 are evenly embedded on the brake disc 4, and the friction blocks 13 are respectively It is in contact with the first friction disc 15 and the second friction disc 12 .

The direct drive motor 1 includes a housing 1-3, the right end of the housing 1-3 is connected to the rear end cover 1-5, the left end of the housing 1-3 is connected to the front end cover 1-2, and the stator 1-4 is installed on the housing 1-4. 3, the right end of the nut 1-9 is connected to the rear end cover 1-5 through the first thrust bearing 1-8, and the left end of the nut 1-9 is connected to the front end cover 1-2 through the second thrust bearing 1-10 Above, the rotor 1-11 is installed on the nut 1-9, and corresponds to the installation position of the stator 1-4, the screw rod 1-1 cooperates with the nut 1-9, and the left end of the screw rod 1-1 protrudes outside the front end cover 1-2 , the right end of the screw 1-1 extends out of the rear end cover 1-5 and is connected to the fan 1-6, the encoder 1-7 is installed on the right end of the screw 1-1, and is located between the fan 1-6 and the rear end cover 1-5 between.

The four direct-drive motors 1 are evenly installed on the upper body 9 with the drive shaft 6 as the center line, and the screw 1-1 of the direct-drive motor 1 is connected with the first friction disc 15, and the first friction disc is pulled 15 to apply the brakes.

The four direct-drive motors 1 are evenly installed on the upper body 9 with the transmission shaft 6 as the center line, and the screw 1-1 of the direct-drive motor 1 is connected with the second friction disc 12, and the second friction disc is pushed to 12 for braking, the first friction disc 15 is connected to the second connecting shaft 18, the second connecting shaft 18 is connected to the upper body 9, and the second friction 12 is connected to the second connecting shaft 18 through the second sliding bearing 19 .

Beneficial effects of the present invention: Since the present invention adopts a direct drive motor as the power source of friction braking, it has the advantages of simple structure, high energy utilization rate, flexible action, convenient operation and low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a schematic structural diagram of the direct drive motor of the present invention.

Fig. 4 is a structural schematic diagram of the first modification of the present invention.

Fig. 5 is a schematic structural diagram of the second modification of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2 and Figure 3, a multi-motor servo direct-drive friction brake suitable for mechanical presses includes four direct-drive motors 1, and the four direct-drive motors 1 are driven by a transmission shaft 6. The center line is evenly arranged and installed on the cross fixing plate 3, and the cross fixing plate 3 is connected on four evenly distributed first connecting shafts 17, and the leftmost end of the first connecting shaft 17 is connected on the upper body 9, and is locked with the first lock. The tight nut 14 is locked, and the upper fuselage 9 is installed on the lower fuselage 7 through the column 8,

The screw rod 1-1 of the direct drive motor 1 is connected with the first friction disc 15, and brakes by pushing the first friction disc 15, and the first friction disc 15 is connected on the first connecting shaft 17 through the first sliding bearing 16, which can Slide left and right on the first connecting shaft 17, the second friction disc 12 is connected on the upper body 9,

The transmission shaft 6 is connected to the bearing seat 11 through the rolling bearing 10, the bearing seat 11 is connected to the upper body 9, the brake disc 4 is connected to the right end of the transmission shaft 6, and the brake disc 4 is axially positioned with the rolling bearing 10 through the sleeve 5 , and lock the brake disc 4 through the second lock nut 2, more than two friction blocks 13 are evenly inlaid on the brake disc 4, and the friction blocks 13 are respectively connected with the first friction disc 15 and the second friction disc 15 during braking. The friction discs 12 are in contact.

Referring to Fig. 3, the described direct-drive motor 1 comprises a housing 1-3, the right end of the housing 1-3 is connected to the rear end cover 1-5, the left end of the housing 1-3 is connected to the front end cover 1-2, and the stator 1-4 is installed Inside the casing 1-3, the right end of the nut 1-9 is connected to the rear end cover 1-5 through the first thrust bearing 1-8, and the left end of the nut 1-9 is connected to the front end through the second thrust bearing 1-10 On the cover 1-2, the rotor 1-11 is installed on the nut 1-9, and corresponds to the installation position of the stator 1-4, the screw rod 1-1 is matched with the nut 1-9, and the left end of the screw rod 1-1 protrudes from the front end cover 1-2, the right end of the screw 1-1 protrudes from the rear end cover 1-5 and connects with the fan 1-6, the encoder 1-7 is installed on the right end of the screw 1-1, and is located at the fan 1-6 and the rear end Cover between 1-5,

As shown in Figure 4, the four direct-drive motors 1 are evenly installed on the upper body 9 with the drive shaft 6 as the center line, and the screw 1-1 of the direct-drive motor 1 is connected with the first friction disc 15, Braking is performed by pulling the first friction disc 15 .

As shown in Figure 5, the four direct-drive motors 1 are evenly installed on the upper body 9 with the drive shaft 6 as the center line, and the screw 1-1 of the direct-drive motor 1 is connected with the second friction disc 12, Braking is performed by pushing the second friction disc 12, the first friction disc 15 is connected on the second connecting shaft 18, the second connecting shaft 18 is connected on the upper body 9, and the second friction disc 12 is connected on the On the second connecting shaft 18 , slide left and right on the second connecting shaft 18 .

Working principle of the present invention is:

After the direct drive motor 1 is energized, the rotor 1-11 rotates under the drive of the stator 1-4, and the rotor 1-11 is installed on the nut 1-9, which will drive the nut 1-9 to rotate at this time, and the screw rod 1-1 is in the Driven by the nuts 1-9, a reciprocating linear motion can be generated, so that the first friction disc 15 can be pushed to close the brake.

When the press needs to brake, the direct drive motor 1 is controlled to work, the screw 1-1 pushes the first friction disc 15 to move to the right, and the friction block 13 embedded in the brake disc 4 is pressed to the second friction disc 13, and the friction Under the action of force, the brake disc 4 will stop moving, thereby driving the transmission shaft 6 to stop working; when the press is working, the screw 1-1 will pull the first friction block 15 to move to the left, at this time, the first friction disc 15 1. There is no friction force between the friction block 13 and the second friction disk 13, and the transmission shaft 6 can work normally.

Claims (3)

1. one kind is applicable to many motor servos direct-drive type friction brake of punching machine, comprise four direct-drive motors (1), it is characterized in that: four direct-drive motors (1) line centered by power transmission shaft (6) is evenly arranged and is arranged on cross fixed head (3), cross fixed head (3) is connected on four uniform the first connecting axles (17), the high order end of the first connecting axle (17) is connected on fuselage (9)

The screw rod (1-1) of direct-drive motor (1) is connected with the first frictional disk (15), first frictional disk (15) is connected on the first connecting axle (17) by the first sliding bearing (16), second frictional disk (12) is connected on fuselage (9)

Power transmission shaft (6) is connected on upper fuselage (9) by rolling bearing (10), brake disc (4) is connected to the right-hand member of power transmission shaft (6), plural brake pad (13) is evenly embedded on brake disc (4), brake pad (13) contacts with the second frictional disk (12) with the first frictional disk (15) respectively when braking

Described direct-drive motor (1) comprises shell (1-3), the right-hand member of shell (1-3) connects rear end cap (1-5), the left end of shell (1-3) connects drive end bearing bracket (1-2), stator (1-4) is arranged on the inside of shell (1-3), nut (1-9) right-hand member is connected on rear end cap (1-5) by the first thrust bearing (1-8), the left end of nut (1-9) is connected on drive end bearing bracket (1-2) by the second thrust bearing (1-10), rotor (1-11) is arranged on nut (1-9), and it is corresponding with the installation site of stator (1-4), screw rod (1-1) and nut (1-9) coordinate, the left end of screw rod (1-1) stretches out drive end bearing bracket (1-2) outward, the right-hand member of screw rod (1-1) stretches out rear end cap (1-5) and is also connected with fan (1-6) outward, encoder (1-7) is arranged on the right-hand member of screw rod (1-1), be positioned between fan (1-6) and rear end cap (1-5).

2. a kind of many motor servos direct-drive type friction brake being applicable to punching machine according to claim 1, it is characterized in that: described four direct-drive motors (1) line centered by power transmission shaft (6) is evenly arranged on upper fuselage (9), the screw rod (1-1) of direct-drive motor (1) is connected with the first frictional disk (15), brakes by pulling the first frictional disk (15).

3. a kind of many motor servos direct-drive type friction brake being applicable to punching machine according to claim 1, it is characterized in that: described four direct-drive motors (1) line centered by power transmission shaft (6) is evenly arranged on upper fuselage (9), the screw rod (1-1) of direct-drive motor (1) is connected with the second frictional disk (12), brake by promoting the second frictional disk (12), first frictional disk (15) is connected on the second connecting axle (18), second connecting axle (18) is connected on fuselage (9), second friction (12) is connected on the second connecting axle (18) by the second sliding bearing (19).