Electric brake device and method

Abstract

The invention discloses an electric brake device and method, and relates to the technical field of braking. The problems that an existing pneumatic type brake device and an existing hydraulic type brake device are high in use cost and limited in locking force, and the brake effect cannot be kept for a long time are solved. The device comprises a deformation sleeve and a locking ring, the outer diameter of the deformation sleeve is sleeved with the locking ring, a locking shaft with threads is locked on an opening of the locking ring, the other end of the locking shaft is connected with an elastic coupler, the elastic coupler is connected with a speed reducer, and the speed reducer is connected with a motor. The device is widely applied to various types of rotating equipment, and the economic benefit, the braking reliability and the braking safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of braking, and in particular to an electric braking device and method. Background Art

[0002] The brake device is an important accessory for CNC turntable, CNC swing head, CNC lathe spindle, hollow rotating platform, reducer and various rotating equipment that need braking. Its function is that when the rotating shaft of the rotating equipment reaches the specified position and stops, the brake device locks the rotating shaft to prevent the rotating shaft of the rotating equipment from swinging left and right to withstand the external impact force, improve the processing accuracy and protect the gears and transmission parts inside the rotating equipment from damage. At present, the brake devices of rotating equipment all adopt pneumatic locking or hydraulic locking. For example, the Chinese utility model patent with the announcement number CN214945921U discloses "a CNC turntable brake assembly", which uses the cylinder principle to press the brake pad assembly connected to the rotating shaft on the fixed surface to achieve the purpose of locking the brake; for another example, the Chinese utility model patent with the announcement number CN215547224U discloses "a dividing plate brake mechanism", the principle of which is to inject hydraulic oil into the cavity inside the brake ring to force the brake ring to deform, squeeze the brake ring and the rotating body together, and achieve the purpose of locking the brake. The disadvantages of these two methods are: first, an additional air source or hydraulic station is required, which increases the cost of use; second, these two methods are subject to the size of the air pressure or hydraulic pressure, and the locking force provided is limited; third, in the case of air or oil outage, the braking effect of these two methods will fail immediately and cannot be maintained for a long time. Summary of the invention

[0003] The present invention provides an electric brake device and method. The electric brake device is driven by a motor, amplifies the torque through a reducer, drives a locking mechanism to brake the rotating shaft, and solves the problems of high use cost, limited locking force and inability to maintain the braking effect of existing pneumatic and hydraulic brake devices.

[0004] The structural solution adopted by the present invention to solve its technical problem is: an electric brake device, which contains a deformable sleeve and a locking ring, the locking ring is fitted on the outer diameter of the deformable sleeve, a threaded locking shaft is locked on the opening of the locking ring, the other end of the locking shaft is connected to an elastic coupling, the elastic coupling is connected to a reducer, and the reducer is connected to a motor.

[0005] In the above-mentioned electric brake device, a number of limit blocks are distributed in the circumferential direction of the locking ring, and the limit blocks limit the locking ring to the deformable sleeve.

[0006] In the above-mentioned electric brake device, the deformable sleeve has a plurality of vertical cutouts in its circumferential direction.

[0007] In the above-mentioned electric brake device, the locking ring is a circular ring with an opening, one end of the opening has a screw hole, and the other end of the opening has a through hole.

[0008] The braking method adopted by the present invention to solve the technical problem is:

[0009] Operation preparation: Put the locking ring on the deformed sleeve, and install the limit block to prevent the locking ring and the deformed sleeve from slipping off, and connect the locking shaft, elastic coupling, reducer and motor in sequence.

[0010] Braking operation: The control system of the rotating equipment sends a command, the motor rotates in torque mode, driving the reducer to rotate. The reducer amplifies the motor torque and drives the locking shaft to rotate. The locking shaft locks the locking ring. The locking ring compresses the deformation sleeve to deform during the locking process, and the rotating shaft placed in the deformation sleeve will be locked to achieve the braking purpose.

[0011] Torque adjustment: According to the actual braking requirements and the load of the rotating shaft, if necessary, the torque of the motor can be adjusted through the control system to ensure accurate and reliable braking effect.

[0012] Loosening operation: The control system of the rotating equipment sends a command, and the servo motor rotates in the opposite direction with a torque greater than that when locked, overcoming the static friction, driving all rotating parts to reverse, and the deformed sleeve returns to its original size. The rotating axis of the rotating equipment is freed to achieve the purpose of loosening.

[0013] The beneficial effects of the present invention are: first, electric drive replaces pneumatic or hydraulic drive, the required electricity source is convenient, and there is no need to purchase an additional air compressor or hydraulic station, which saves costs, does not take up space, and improves economic benefits; second, the torque of the servo motor is increased by a reducer, and a locking force much greater than that of pneumatic or hydraulic drive can be obtained, thereby improving the reliability of the brake; third, a threaded locking method is adopted, which can be locked once and maintained for a long time, and is also effective when the power is off, thereby improving the safety of the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the present invention;

[0015] Figure 2 is a stereogram of the present invention;

[0016] Figure 3 It is an enlarged view of the position relationship between the limit block and the locking ring in the present invention;

[0017] Figure 4 is a schematic cutaway diagram of a deformable sleeve in the present invention;

[0018] Figure 5 It is a structural schematic diagram of the locking ring in the present invention.

[0019] In the figure: 1, deformation sleeve; 2, locking ring; 3, locking shaft; 4, elastic coupling; 5, reducer; 6, motor; 7, bracket plate; 8, mounting base plate; 9, mounting hole; 10 limit block; 11, vertical incision; 12, screw hole; 13, through hole. DETAILED DESCRIPTION

[0020] like Figure 1 , Figure 2 An electric brake device includes a deformable sleeve 1 and a locking ring 2. The locking ring 2 is fitted on the outer diameter of the deformable sleeve 1. A threaded locking shaft 3 is locked on the opening of the locking ring 2. The other end of the locking shaft 3 is connected to an elastic coupling 4. The elastic coupling 4 is connected to a reducer 5. The reducer 5 is connected to a motor 6. The reducer 5 is fixed on a bracket plate 7. The bracket plate 7 is fixed on a mounting base plate 8. The mounting plate 8 has a plurality of mounting holes 9. The mounting holes 9 are used to fix the device on a rotating device that needs a brake device.

[0021] like Figure 2 , Figure 3 A number of limit blocks 10 are distributed in the circumferential direction of the locking ring 2, and the limit blocks 10 limit the locking ring 2 on the deformable sleeve 1. There is a gap between the limit blocks 10 and the locking ring 2, so that the locking ring 2 can move freely during the locking process, but will not fall off from the deformable sleeve 1.

[0022] like Figure 4 The deformable sleeve 1 has a number of vertical cutouts 11 in the circumferential direction. With these cutouts 11, one end of the deformable sleeve 1 is fixed and the other end is free, so that the deformable sleeve 1 has a deformable property. When the locking ring 2 is locked, the inner hole of the deformable sleeve 1 becomes smaller, and when the inner diameter becomes smaller, that is, during the braking process, the center does not deviate. The number of cutouts 11 is determined by the braking force and the material properties of the deformable sleeve 1.

[0023] like Figure 5 The locking ring 2 is a circular ring with an opening, one end of the opening has a screw hole 12, and the other end of the opening has a through hole 13.

[0024] The braking method adopted by the present invention to solve the technical problem is:

[0025] Operation preparation: fit the locking ring 2 onto the deformable sleeve 1, and install the limit block 10 to prevent the locking ring 2 and the deformable sleeve 1 from slipping off, and connect the locking shaft 3, the elastic coupling 4, the reducer 5, and the motor 6 in sequence.

[0026] Braking operation: the control system of the rotating equipment sends a command, the motor 6 rotates in torque mode, driving the reducer 5 to rotate, the reducer 5 amplifies the torque of the motor 6 and drives the locking shaft 3 to rotate, the locking shaft 3 locks the locking ring 2, and the locking ring 2 compresses the deformation sleeve 1 to deform during the locking process, and various types of rotating shafts placed in the inner hole of the deformation sleeve 1 will be locked to achieve the braking purpose.

[0027] Torque adjustment: According to the actual braking requirements and the load of the rotating shaft, if necessary, the torque of the motor 6 can be adjusted through the control system to ensure the accuracy and reliability of the braking effect.

[0028] Loosening operation: The control system of the rotating device issues a command, and the motor 6 rotates in the opposite direction with a torque greater than that during locking, overcoming the static friction, driving all rotating parts to reverse, and the deformed sleeve 1 returns to its original size, and the rotating shaft of the rotating device is freed to achieve the purpose of loosening.

[0029] The present invention should be widely used. It can not only be used as a separate device to match various types of rotating equipment, but also can be integrated into various types of rotating equipment by changing the styles of some connecting parts. For example, the bracket plate 7 and the mounting base plate 8 can be commonly cancelled, and the reducer and other parts of the present invention can be directly installed on the housing of the rotating equipment, and the structure will be more compact.

[0030] The above is only a preferred specific implementation method of the present application, but the protection scope of the present application is not limited to this. The core technical point of the present invention is to increase the motor torque through a reducer, drive the screw-type locking ring to "shrink" the deformed sleeve, and then "clamp" the rotating shaft. Any technician familiar with this technical field is within the technical scope disclosed in this application; according to the technical solution and its improved concept of this application, they can make equivalent replacements or changes; all of which should be covered in the protection scope of this application.

Claims

1. An electric brake device, comprising a deformable sleeve and a locking ring, wherein the locking ring is fitted on the outer diameter of the deformable sleeve, a threaded locking shaft is locked on the opening of the locking ring, the other end of the locking shaft is connected to an elastic coupling, the elastic coupling is connected to a reducer, and the reducer is connected to a motor.

2. The electric brake device according to claim 1, characterized in that: A number of limit blocks are distributed in the circumferential direction of the locking ring, and the limit blocks limit the locking ring to be positioned on the deformable sleeve.

3. The electric brake device according to claim 1, characterized in that: The deformation sleeve is provided with a number of vertical cuts in the circumferential direction thereof.

4. The electric brake device according to claim 1, characterized in that: The locking ring is a circular ring with an opening, one end of the opening is provided with a screw hole, and the other end of the opening is provided with a through hole.

5. A braking method using the electric brake device according to claim 1, characterized in that: The following steps are involved: Operation preparation: Put the locking ring on the deformed sleeve, and install the limit block to prevent the locking ring and the deformed sleeve from slipping off, and connect the locking shaft, elastic coupling, reducer, and motor in sequence; Braking operation: The control system of the rotating equipment issues a command, the motor rotates in torque mode, driving the reducer to rotate. The reducer amplifies the motor torque and drives the locking shaft to rotate. The locking shaft locks the locking ring. During the locking process of the locking ring, the deformation sleeve is deformed, and the rotating shaft placed in the deformation sleeve will be locked to achieve the braking purpose; Torque adjustment: According to the actual braking requirements and the load of the rotating shaft, if necessary, the torque of the motor can be adjusted through the control system to ensure accurate and reliable braking effect; Loosening operation: The control system of the rotating equipment sends a command, and the servo motor rotates in the opposite direction with a torque greater than that when locked, overcoming the static friction, driving all rotating parts to reverse, and the deformed sleeve returns to its original size. The rotating axis of the rotating equipment is freed to achieve the purpose of loosening.

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