Piston machining grinding machine

Abstract

The utility model discloses a piston machining grinding machine, belongs to the technical field of piston machining, and solves the problem that when a fixture clamps a piston, the piston is clamped in a rigid collision state, and the surface of the piston is damaged. Comprising a hollow machine box, a base fixedly connected to the machine box and communicated with the machine box, and a grinding assembly horizontally moving above the machine box, a connecting cylinder is rotationally connected to the base, an electromagnet right facing the connecting cylinder is arranged in the base, and the machine further comprises an electromagnetic electric control circuit electrically connected with the electromagnet. According to the piston grinding device, an operator manually puts a piston into the connecting cylinder, when the piston passes through the distance sensor, the electromagnet is powered on to attract and fix the piston, meanwhile, the servo motor drives the rotating shaft and the connecting cylinder to rotate and drives the piston to rotate, the grinding wheel is driven by the electric sliding rail to make contact with the surface of the piston for grinding, and splashed chippings are intercepted by the shielding cover.

Description

Technical Field

[0001] The utility model relates to the technical field of piston processing, in particular to a piston processing grinder. Background Art

[0002] Grinding machines are mechanical equipment that use grinding tools for precision processing. They are specially used for grinding or polishing the surfaces of various materials to achieve the desired dimensional accuracy, geometric shape and surface finish. Traditional grinding machines mainly include external cylindrical grinders, internal cylindrical grinders, surface grinders and centerless grinders. External cylindrical grinders are used to process the outer surface of shaft parts, internal cylindrical grinders process holes or inner surfaces, surface grinders are mainly for flat or curved surfaces, and centerless grinders are suitable for processing shaft or sleeve parts without obvious centering positions.

[0003] In the prior art, the piston to be processed needs to be installed on a grinder, and then the surface of the piston is polished by a grinding wheel to complete the polishing of the piston. Usually, the piston to be processed is clamped by a clamp, but when the clamp clamps the piston, it is clamped in a rigid collision state, which will cause damage to the piston surface.

[0004] Therefore, a piston processing grinder is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a piston processing grinder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A piston processing grinder comprises a hollow chassis, a base fixedly connected to the chassis and communicated with the chassis, and a grinding assembly horizontally displaced above the chassis, wherein a connecting cylinder is rotatably connected to the base, an electromagnet facing the connecting cylinder is arranged in the base, and an electromagnetic electric control circuit is also included, wherein the electromagnetic electric control circuit is electrically connected to the electromagnet.

[0008] Preferably, a rotating shaft is rotatably connected inside the base, and one end of the rotating shaft passing through the base is coaxially fixedly connected with a connecting tube. The electromagnet is ring-shaped, and the electromagnet is sleeved on the outer ring of the rotating shaft and fixedly connected to the base. A driving assembly is arranged in the chassis, and the driving assembly is transmission-connected to the rotating shaft.

[0009] Preferably, the driving assembly includes a servo motor fixedly connected to the chassis, a driving sprocket fixedly connected to the output shaft of the servo motor, a driven sprocket fixedly connected to the rotating shaft, and a chain that transmits transmission connection between the driving sprocket and the driven sprocket, and the rotating shaft, rotating shaft and base are all made of plastic material.

[0010] Preferably, the grinding assembly includes a protective shell, a driving motor fixedly connected to the protective shell, and a grinding wheel. The output shaft of the driving motor passes through the protective shell, and the grinding wheel is fixedly connected to the output shaft of the driving motor. A horizontally arranged electric slide rail is fixedly connected to the base, and the protective shell is fixedly connected to the slide seat of the electric slide rail.

[0011] Preferably, a shielding cover located on the outer ring of the grinding wheel is fixedly connected to the protective shell.

[0012] Preferably, the electromagnetic electric control circuit includes a distance sensor, an operational amplifier, a voltage comparison circuit, a control circuit, and a switch circuit;

[0013] The distance sensor is arranged on the base, and is used to detect the presence of the piston on the connecting cylinder and output a distance signal;

[0014] The input end and the output end of the operational amplifier are connected to the distance sensor and the voltage comparison circuit respectively, and the operational amplifier amplifies the distance signal and transmits it to the voltage comparison circuit;

[0015] The output end of the voltage comparator is connected to the input end of the control circuit. After receiving the amplified distance signal, the voltage comparator compares it with the threshold and outputs a comparison signal when the threshold is met;

[0016] The control circuit controls the electromagnet to be powered on and off through the switch circuit. The control circuit controls the switch circuit to be powered on after receiving and responding to the comparison signal.

[0017] Preferably, the voltage comparison circuit is a voltage comparator, the control circuit is a 555 time base chip, and the switch circuit is a triode switch.

[0018] The utility model has the following beneficial effects:

[0019] The utility model realizes processing by manually placing the piston to the connecting cylinder. During the process, the distance sensor passed by the piston energizes the electromagnet and attracts the piston to fix it to the connecting cylinder. Since the cylinder and the shaft are made of plastic, electromagnetic interference is avoided. The servo motor drives the sprocket to drive the shaft and the cylinder to rotate, and the grinding wheel is controlled by the drive motor and grinds with the electric slide rail. The debris is intercepted by the shielding cover to protect the working environment. This design avoids the use of clamps and eliminates the risk of hard contact and piston surface damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 It is a structural block diagram of the electromagnetic electric control circuit in the utility model.

[0023] 1. Chassis; 2. Base; 3. Connecting tube; 4. Protective shell; 5. Grinding wheel; 6. Shielding cover; 7. Distance sensor; 8. Operational amplifier; 9. Voltage comparator; 10. Control circuit; 11. Switching circuit; 12. Electromagnet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] A piston processing grinder, such as Figure 1 As shown, it includes a hollow chassis 1, a base 2 fixedly connected to the chassis 1 and connected thereto, and a grinding assembly horizontally displaced above the chassis 1, a connecting tube 3 is rotatably connected to the base 2, an electromagnet 12 facing the connecting tube 3 is arranged in the base 2, and also includes an electromagnetic electric control circuit, which is electrically connected to the electromagnet 12.

[0026] like Figure 3 As shown, the electromagnetic electric control circuit includes a distance sensor 7, an operational amplifier 8, a voltage comparison circuit, a control circuit 10, and a switch circuit 11. The distance sensor 7 is arranged on the base 2, and is used to detect the presence of a piston on the connecting tube 3 and output a distance signal. The input end and the output end of the operational amplifier 8 are respectively connected to the distance sensor and the voltage comparison circuit. The operational amplifier 8 amplifies the distance signal and transmits it to the voltage comparison circuit. The output end of the voltage comparator 9 is connected to the input end of the control circuit 10. After receiving the amplified distance signal, the voltage comparator 9 compares it with the threshold and outputs a comparison signal after reaching the standard. The control circuit 10 controls the electromagnet 12 to turn on and off through the switch circuit 11. After receiving and responding to the comparison signal, the control circuit 10 controls the switch circuit 11 to turn on. Specifically, the voltage comparison circuit is the voltage comparator 9, the control circuit 10 is a 555 time base chip, and the switch circuit 11 is a triode switch.

[0027] A rotating shaft is rotatably connected inside the base 2 and passes through it. One end of the rotating shaft passing through the base 2 is coaxially fixedly connected with a connecting tube 3. The electromagnet 12 is ring-shaped and is sleeved on the outer ring of the rotating shaft and fixedly connected to the base 2. A driving assembly is arranged in the chassis 1, and the driving assembly is transmission-connected to the rotating shaft. The driving assembly includes a servo motor fixedly connected to the chassis 1, a driving sprocket fixedly connected to the output shaft of the servo motor, a driven sprocket fixedly connected to the rotating shaft, and a chain transmission-connecting the driving sprocket and the driven sprocket. The rotating shaft, the rotating shaft and the base 2 are all made of plastic.

[0028] like Figure 2 As shown, the grinding assembly includes a protective shell 4, a driving motor fixedly connected to the protective shell 4, and a grinding wheel 5. The output shaft of the driving motor is arranged through the protective shell 4, and the grinding wheel 5 is fixedly connected to the output shaft of the driving motor. A horizontally arranged electric slide rail is fixedly connected to the base 2, the protective shell 4 is fixedly connected to the slide seat of the electric slide rail, and a shielding cover 6 located on the outer ring of the grinding wheel 5 is fixedly connected to the protective shell 4.

[0029] When placing the processed piston on the connecting tube 3, the utility model only requires the operator to manually place the piston into the connecting tube 3. During the process, the piston will pass through the distance sensor 7. The distance sensor 7 detects that the previous distance has changed. The distance sensor 7 will send a distance signal, which will then be given to the operational amplifier 8 to amplify the distance signal. The amplified distance signal will be transmitted to the voltage comparator 9. The voltage comparator 9 determines the size between the amplified distance signal and the threshold. After the amplified distance signal exceeds the threshold, the voltage comparator 9 can send a high-level comparison signal to the 555 time base chip. However, because the 2 pins of the 555 time base chip require a low-level signal to be triggered, a NOT gate circuit needs to be connected between the voltage comparator 9 and the 555 time base chip, so that the final high-level comparison signal can be converted into a low-level comparison signal, so that the 555 time base chip is triggered and a control signal is sent to the base of the transistor switch. When the transistor switch receives the control signal, the control signal is sent to the base of the transistor switch. After the control signal is sent, its collector and emitter will be connected to the circuit, so that the electromagnet 12 is energized. In this way, the electromagnet 12 can pass through the base 2 and the connecting tube 3 to generate a magnetic force on the piston, so that the piston is fixed in the connecting tube 3. Since the connecting tube 3 and the rotating shaft are made of plastic, the rotation of the two will not be negatively affected by the magnetic force of the electromagnet 12. Then the servo motor can drive the active sprocket to rotate, and drive the rotating shaft and the connecting tube 3 to rotate through the chain and the driven sprocket. During the rotation of the connecting tube 3, the piston will also be driven to rotate together, and then the grinding wheel 5 driven by the driving motor can also rotate. Driven by the electric slide rail, the protective shell 4, the driving motor and the grinding wheel 5 are displaced, so that the grinding wheel 5 contacts the outer surface of the piston to complete the grinding work. The debris splashed out during the grinding process can be blocked by the shielding cover 6 to avoid splashing into the working environment. There is no need to clamp the piston surface with a clamp to avoid rigid collision and damage to the piston surface.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piston processing grinder, characterized in that: The invention comprises a hollow chassis (1), a base (2) fixedly connected to the chassis (1) and in communication therewith, and a grinding assembly horizontally displaced above the chassis (1), wherein a connecting tube (3) is rotatably connected to the base (2), an electromagnet (12) facing the connecting tube (3) is arranged in the base (2), and an electromagnetic electric control circuit is also included, wherein the electromagnetic electric control circuit is electrically connected to the electromagnet (12); The base (2) is rotatably connected to a rotating shaft that passes through it, and one end of the rotating shaft that passes through the base (2) is coaxially fixedly connected to a connecting tube (3). The electromagnet (12) is annular, and the electromagnet (12) is sleeved on the outer ring of the rotating shaft and fixedly connected to the base (2). A driving component is arranged in the chassis (1), and the driving component is drivingly connected to the rotating shaft.

2. A piston grinding machine according to claim 1, characterized in that: The driving assembly comprises a servo motor fixedly connected to the chassis (1), a driving sprocket fixedly connected to the output shaft of the servo motor, a driven sprocket fixedly connected to the rotating shaft, and a chain for transmission connecting the driving sprocket and the driven sprocket, and the rotating shaft, the rotating shaft and the base (2) are all made of plastic material.

3. The piston grinding machine according to claim 1, characterized in that: The grinding assembly comprises a protective shell (4), a driving motor fixedly connected to the protective shell (4), and a grinding wheel (5); the output shaft of the driving motor is arranged to pass through the protective shell (4), and the grinding wheel (5) is fixedly connected to the output shaft of the driving motor; a horizontally arranged electric slide rail is fixedly connected to the base (2), and the protective shell (4) is fixedly connected to the slide seat of the electric slide rail.

4. A piston processing grinding machine according to claim 3, characterized in that: The protective shell (4) is fixedly connected to a shielding cover (6) located on the outer ring of the grinding wheel (5).

5. The piston processing grinding machine according to claim 1, characterized in that: The electromagnetic electric control circuit comprises a distance sensor (7), an operational amplifier (8), a voltage comparison circuit, a control circuit (10), and a switch circuit (11); the voltage comparison circuit is a voltage comparator (9); the control circuit (10) is a 555 time base chip; and the switch circuit (11) is a triode switch; The distance sensor (7) is arranged on the base (2) and is used to detect the presence of a piston on the connecting cylinder (3) and output a distance signal; The input end and the output end of the operational amplifier (8) are respectively connected to the distance sensor and the voltage comparison circuit, and the operational amplifier (8) amplifies the distance signal and transmits it to the voltage comparison circuit; The output end of the voltage comparator (9) is connected to the input end of the control circuit (10); after receiving the amplified distance signal, the voltage comparator (9) compares it with the threshold value and outputs a comparison signal when the threshold is reached; The control circuit (10) controls the on / off of the electromagnet (12) through the switch circuit (11); the control circuit (10) controls the switch circuit (11) to be energized after receiving and responding to the comparison signal.

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