CN219348517U

CN219348517U - Multifunctional all-electric direct-drive plane double-shaft testing device

Info

Publication number: CN219348517U
Application number: CN202223492485.XU
Authority: CN
Inventors: 方涛; 付应乾; 董新龙; 单俊杰; 丁志恒
Original assignee: Ceos Ningbo Industrial Technology Co ltd
Current assignee: Ceos Ningbo Industrial Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-07-14
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a multifunctional all-electric direct-drive plane double-shaft testing device which comprises a base and a machine table arranged on the base, wherein a clamp is arranged in the middle of the machine table, a part to be tested is arranged in the clamp, a plurality of loading mechanisms are arranged on the periphery of the machine table, the loading mechanisms are linear motors, each linear motor comprises a shell, a stator and a rotor, the shells are fixed on the machine table, a plurality of channels facing the clamp are arranged on the shells, the stators are fixed in the channels, the rotors slide relative to the stators, coils are arranged on the stators, magnets are arranged on the rotors, and working heads are arranged at the front ends of the rotors and are matched with the part to be tested. When the device is used, the linear motor is electrified, a magnetic field is generated in the stator of the linear motor, and the magnetic field attracts the magnet on the rotor, so that the rotor generates power, the rotor directly generates linear motion, and the linear motion acts on a part to be detected through the working head at the front end of the rotor.

Description

Multifunctional all-electric direct-drive plane double-shaft testing device

Technical Field

The utility model relates to a multifunctional all-electric direct-drive planar double-shaft testing device.

Background

The common tensile testing devices in the market mainly comprise a mechanical type tensile testing device and a hydraulic type tensile testing device.

The mechanical type is mainly characterized in that a servo motor is used for driving a screw rod to repeatedly stretch a workpiece to be tested, so that the fatigue degree of the workpiece is detected. However, this device has three inherent disadvantages,

1. the precision is low:

the driving mode of a common servo motor driving a screw rod can not meet the increasingly-improved test precision requirement, which is caused by the defect of the transmission, the principle is that the rotation of the motor is converted into linear motion through the screw rod, and an error gap exists between the screw rod and a nut, friction exists between the screw rod and the nut, and the precision is lower due to abrasion after long-term use. The biaxial tension and compression test has higher requirement on the synchronism of four power sources, namely the synchronous precision is higher than 0.1mm; in addition, the mechanical method for realizing the synchronization of the two shafts is generally a mechanical link mechanism, and has low precision, inconvenient adjustment and short service life.

2. The speed is low:

limited by its structure, its properties are only satisfactory for slow strain rate stretching or creep

3. Has a complex structure

Requiring intermediate transmission and cooperation between various mechanical structures

The hydraulic system uses a hydraulic motor as a driving element, hydraulic oil as an intermediate transmission medium and a hydraulic cylinder as an actuating element. A loading of a large force can be achieved, but there are also a number of insurmountable disadvantages,

1. the precision is lower:

the essence of hydraulic driving is that hydraulic oil is taken as an intermediate transmission medium, the hydraulic oil has compressibility and is greatly influenced by temperature, so that the control of output precision is difficult

2. The speed in the controllable range is not high:

the hydraulic pressure can realize high shooting through the energy accumulator, but the process is uncontrollable, namely, the synchronous test of double shafts is impossible to realize; the speed and the precision of the hydraulic system controlled by the servo can only meet the test requirement of static stretching or compression

3. The structure is complex:

the whole hydraulic system needs to be equipped, and a hydraulic system is huge and complex.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the multifunctional all-electric direct-drive planar double-shaft testing device which has high precision, high speed and simple structure.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a multi-functional full electricity directly drives plane biax testing arrangement, includes the base and sets up the board on the base, board intermediate position is provided with anchor clamps, be provided with the part that awaits measuring in the anchor clamps, the week circle of board sets up several loading mechanism, loading mechanism is linear electric motor, linear electric motor includes shell, stator and active cell, the shell is fixed on the board, be provided with the several towards on the shell the passageway of anchor clamps, the stator is fixed in the passageway, the active cell is relative the stator slides, be provided with the coil on the stator, be provided with the magnet on the active cell, the front end of active cell is provided with the work head, the work head with the part that awaits measuring cooperatees. When the device is used, the linear motor is electrified, a magnetic field is generated in the stator of the linear motor, and the magnetic field attracts the magnet on the rotor, so that the rotor generates power, the rotor directly generates linear motion, and the linear motion acts on a part to be detected through the working head at the front end of the rotor. Compared with the original testing device, the utility model has three advantages, 1. The precision is high, compared with the original mechanical testing device, the rotor is directly connected with the working head, and the structure of a screw rod and a nut in the mechanical testing device does not exist, so that a gap is avoided, and the hydraulic oil is not influenced by temperature to cause errors like the hydraulic oil in the hydraulic testing device. 2. The speed is high, the mode that the rotor is directly driven to linearly move by the stator does not exist a screw nut mechanism with a large reduction ratio in a mechanical testing device, and the process is uncontrollable when the rotor moves at a high speed unlike a hydraulic testing device. 3. Compared with a mechanical testing device, the device has the advantages that the structure is simple, and a speed reducing mechanism such as a screw nut is not needed. Compared with a hydraulic testing device, the hydraulic testing device does not need to be provided with an oil tank and various valves, so that the structure of the hydraulic testing device is greatly simplified.

In the above technical solution, preferably, the number of the linear motors is four, and the four linear motors are uniformly distributed along the circumferential direction of the machine. The mechanism can enable the equipment to test the state of the part when being stressed or impacted in two directions.

In the above technical scheme, preferably, two sides of the mover are fixed on a sliding block, a sliding rail is arranged in the housing, and the sliding block is slidably connected to the sliding rail. The rotor is connected in a way that the rotor is not contacted with the stator, so that the friction force between the stator and the rotor is greatly reduced.

In the above technical solution, preferably, there are two sliders on each side. Thus, the sliding block can run more stably.

In the above technical solution, preferably, the working head is a chuck, and the chuck clamps the part to be tested. The clamping head is used as a working head, so that the tensile fatigue strength of a workpiece can be tested.

In the above technical scheme, preferably, the working head comprises a cylinder body, one end of the cylinder body is slidably connected with a punch, the punch is matched with the part to be tested, the other end of the cylinder body is slidably connected with a top block, the top block is connected to the mover, and a certain distance is reserved between the top block and the punch. When the working head is used, the stator is electrified, the rotor drives the ejector block to advance, the ejector block is impacted on the punch when accelerated to a certain speed, and then the punch and the part to be tested fixed on the clamp are impacted, so that the working head can simulate the state of the part when impacted. This is a unique advantage of using linear motors, and neither mechanical nor hydraulic testing devices can produce adequate speed to simulate an impact scenario.

In the above technical solution, preferably, a distance between the punch and the top block is 30mm to 70mm. A sufficient distance is required between the punch and the top block to allow the mover to generate a sufficient speed.

In the technical scheme, specifically, the speed of the top block when the top block is accelerated to collide with the punch is 4m/s.

The beneficial effects of the utility model are as follows: compared with the original testing device, the utility model has three advantages, 1. The precision is high, compared with the original mechanical testing device, the rotor is directly connected with the working head, and the structure of a screw rod and a nut in the mechanical testing device does not exist, so that a gap is avoided, and the hydraulic oil is not influenced by temperature to cause errors like the hydraulic oil in the hydraulic testing device. 2. The speed is high, the mode that the rotor is directly driven to linearly move by the stator does not exist a screw nut mechanism with a large reduction ratio in a mechanical testing device, and the process is uncontrollable when the rotor moves at a high speed unlike a hydraulic testing device. 3. Compared with a mechanical testing device, the device has the advantages that the structure is simple, and a speed reducing mechanism such as a screw nut is not needed. Compared with a hydraulic testing device, the hydraulic testing device does not need to be provided with an oil tank and various valves, so that the structure of the hydraulic testing device is greatly simplified.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of the present utility model.

Fig. 2 is a schematic illustration of fig. 1 with a linear motor housing removed.

Fig. 3 is an enlarged partial schematic view of fig. 2.

Fig. 4 is a schematic front view of the present utility model.

Fig. 5 is a cross-sectional view taken along A-A of fig. 4.

Fig. 6 is an enlarged partial schematic view of fig. 5.

Fig. 7 is a schematic view of a work head according to another embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and detailed description:

embodiment 1, see fig. 1 to 6, a multi-functional full electricity directly drives planar biax testing arrangement, including base 1 and the board 2 of setting on base 1, board 2 intermediate position is provided with anchor clamps 3, be provided with in the anchor clamps 3 and await measuring part 1a.

Four loading mechanisms are arranged on the periphery of the machine table, the loading mechanisms are linear motors 4, and the four linear motors 4 are uniformly distributed along the circumferential direction of the machine table 2. The mechanism can enable the equipment to test the state of the part when being stressed or impacted in two directions.

The linear motor 4 comprises a shell 41, a stator 42 and a rotor 43, wherein the shell 41 is fixed on the machine table 2, four channels towards the clamp 3 are formed in the shell 2, the stator 42 is fixed in the channels, the rotor 43 slides relative to the stator 42, a coil is arranged on the stator 42, a magnet is arranged on the rotor 43, a working head is arranged at the front end of the rotor 43, and the working head is matched with the part 1a to be tested. When the device is used, the linear motor is electrified, a magnetic field is generated in the stator of the linear motor, and the magnetic field attracts the magnet on the rotor, so that the rotor generates power, the rotor directly generates linear motion, and the linear motion acts on a part to be detected through the working head at the front end of the rotor.

The two sides of the mover 43 are fixed to the sliders 431, and there are two sliders 431 on each side. Thus, the sliding block can run more stably. A sliding rail 411 is disposed in the housing 41, and the sliding block 431 is slidably connected to the sliding rail 411. The rotor is connected in a way that the rotor is not contacted with the stator, so that the friction force between the stator and the rotor is greatly reduced.

The working head is a chuck 5, and the chuck 5 clamps the part 1a to be tested. The clamping head is used as a working head, so that the tensile fatigue strength of a workpiece can be tested.

In embodiment 2, referring to fig. 7, the working head includes a cylinder 6, one end of the cylinder 6 is slidably connected with a punch 61, the punch 61 is matched with the part 1a to be tested, the other end of the cylinder 6 is slidably connected with a top block 62, the top block 62 is connected to the mover 43, and a certain distance is provided between the top block 62 and the punch 61. The distance between the punch and the top block is 30mm to 70mm. Preferably, in this embodiment, the distance between the punch and the top block is 50mm, so that the top block collides with the punch when the top block is accelerated to 4m/s, and the impact force is enough to meet the test requirement.

When the working head is used, the stator is electrified, the rotor drives the ejector block to advance, the ejector block is impacted on the punch when accelerated to a certain speed, and then the punch and the part to be tested fixed on the clamp are impacted, so that the working head can simulate the state of the part when impacted. This is a unique advantage of using linear motors, and neither mechanical nor hydraulic testing devices can produce adequate speed to simulate an impact scenario.

Claims

1. The utility model provides a multi-functional full electricity directly drives plane biax testing arrangement, includes the base and sets up the board on the base, board intermediate position is provided with anchor clamps, be provided with the part that awaits measuring in the anchor clamps, the week circle of board sets up several loading mechanism, its characterized in that: the loading mechanism is a linear motor, the linear motor comprises a shell, a stator and a rotor, the shell is fixed on the machine table, a plurality of channels facing the clamp are arranged on the shell, the stator is fixed in the channels, the rotor slides relative to the stator, a coil is arranged on the stator, a magnet is arranged on the rotor, a working head is arranged at the front end of the rotor, and the working head is matched with a part to be tested.

2. The functional all-electric direct-drive planar biaxial testing device according to claim 1, wherein: the number of the linear motors is four, and the four linear motors are uniformly distributed along the circumferential direction of the machine.

3. The functional all-electric direct-drive planar biaxial testing device according to claim 1, wherein: the two sides of the rotor are fixed on the sliding blocks, sliding rails are arranged in the shell, and the sliding blocks are connected to the sliding rails in a sliding mode.

4. A functional all-electric direct-drive planar biaxial testing device according to claim 3, wherein: there are two of said sliders on each side.

5. The functional all-electric direct-drive planar biaxial testing device according to claim 1, wherein: the working head is a chuck, and the chuck clamps the part to be tested.

6. The functional all-electric direct-drive planar biaxial testing device according to claim 1, wherein: the working head comprises a cylinder body, one end of the cylinder body is slidably connected with a punch, the punch is matched with the part to be tested, the other end of the cylinder body is slidably connected with a top block, the top block is connected to the rotor, and a certain distance is reserved between the top block and the punch.

7. The functional all-electric direct-drive planar biaxial testing device according to claim 6, wherein: the distance between the punch and the top block is 30mm to 70mm.

8. The functional all-electric direct-drive planar biaxial testing device according to claim 7, wherein: the top block accelerated to a speed of 4m/s upon impact with the ram.