CN111321407A - An electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine - Google Patents

Abstract

An electrical spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine relates to a mechanism, in particular to an electrical spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine. The purpose of the present invention is to solve the problems of difficult operation, uneven deposition quality and low deposition efficiency of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine. The mechanism is based on modular design, including support shaft, web, bracket, power unit, cam rotating device, electrode rotating vibration device, and protective gas pipeline. Combining the numerical control technology and the surface strengthening technology of EDM, a process platform for EDM deposition of wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine is built to realize the numerical control and automatic deposition of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine. The invention can obtain an electric spark deposition mechanism for the wear-resistant coating of the inner wall of the cylinder liner of the internal combustion engine.

Description

An electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine

technical field

The invention relates to a special deposition mechanism, in particular to an electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine.

Background technique

Internal combustion engine cylinder liners work under high temperature, high pressure, alternating load and corrosion. According to statistics, the wear failure of internal combustion engine cylinder liners in the world accounts for 33% of the entire consumption loss. The EDM technology has the advantages of metallurgical bonding between the coating and the substrate, high bonding strength; small residual stress and small deformation of the deposited layer; simple deposition process and fine coating structure.

Deposition of wear-resistant coating on the inner wall of internal combustion engine cylinder liner by electric spark deposition technology is a new process method to solve the wear problem of internal combustion engine cylinder liner. However, the EDM deposition of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine is still manually operated, which is difficult to operate, the deposition quality is uneven, and the deposition efficiency is low. The existence of the above problems seriously limits the application of EDM technology in the field of EDM deposition of wear-resistant coatings on the inner wall of cylinder liners of internal combustion engines.

Relying on numerical control technology and numerical control machine tool software and hardware research results, integrating numerical control technology and EDM surface strengthening technology, a process platform for EDM deposition of wear-resistant coating on the inner wall of the cylinder liner of an internal combustion engine is built to realize the wear resistance of the inner wall of the cylinder liner of an internal combustion engine. The automation, numerical control and precise control of the coating EDM process can overcome many shortcomings of manual deposition, so as to achieve high-efficiency deposition and precise quality control of wear-resistant coatings.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problems that manual EDM deposition of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine is difficult, the deposition quality is uneven, and the deposition efficiency is low, so as to provide an electric spark of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine. deposition mechanism.

An electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine is mainly composed of a support shaft, a web, a bracket, a power device, a cam rotating device, an electrode rotating vibration device, and a protective gas pipeline; the support shaft includes a support shaft a body, a threaded hole connecting the lower end of the web, a motor mounting part and a rolling bearing mounting part; the web includes a web body, a threaded hole for connecting a support shaft and a threaded hole for connecting a bracket; the bracket includes a bracket body, a protective gas pipeline The fixed seat, the bolt connection hole, the telescopic hole of the electrode rotary vibration device and the threaded hole at the upper end of the connection web; the power device includes a motor, a key and a driving gear; the cam rotation device includes a cam rotation shaft, a cam, a key, a driven gear Gears and keys; the electrode rotary vibration device includes electrodes, set screws, electrode holders, electrode return springs, electrode holder slideways, screws, insulating sleeves, motors, nuts, bolts, roller fasteners, Bearing retaining ring, cylindrical pin, roller, return spring of electrode rotary vibration device, bolt, nut and positive bearing of deposition power supply; the protective gas pipeline includes protective gas nozzle, protective gas pipeline body, protective gas hose joint; the protective gas pipeline The gas pipeline is fixed on the protective gas pipeline fixing seat of the bracket through the set screw, the electrode rotary vibration device is installed on the bracket through bolts and nuts, and the two ends of the cam rotating shaft of the cam rotating device are respectively fixed on the rolling bearing located on the supporting shaft. The inner ring of the rolling bearing in the mounting part and the inner ring of the rolling bearing located in the rolling bearing mounting part of the rolling bearing fixing plate, the rolling bearing fixing plate is fixed on the bracket by bolts, the motor of the power unit is installed on the motor mounting part of the support shaft, and the bracket is fixed by bolts It is fixed on the web, and the web is fixed on the support shaft by bolts.

Principles and advantages of the present invention.

1. In the present invention, the cylinder liner of the internal combustion engine is fixed on the three-jaw chuck of the CNC lathe, the wear-resistant coating EDM deposition mechanism of the inner wall of the cylinder liner of the internal combustion engine is clamped on the tool holder of the CNC lathe through the support shaft, and the spindle of the CNC lathe is controlled by controlling the spindle of the CNC lathe. The rotation speed drives the cylinder liner of the internal combustion engine to rotate, and by controlling the feed speed of the CNC lathe, it drives the wear-resistant coating EDM deposition mechanism on the inner wall of the cylinder liner of the internal combustion engine to do the feeding movement, and gives full play to the function of the CNC lathe. The electric spark deposition of the wear-resistant coating on the inner wall of the inner wall of the cylinder liner of the internal combustion engine is realized under the rotary vibration of the electrode of the electric spark deposition mechanism of the inner wall wear-resistant coating.

2. The invention realizes numerical control and automation of the electric spark deposition process of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine, overcomes many shortcomings of manual deposition, and thus achieves high-efficiency and high-quality deposition of the wear-resistant coating.

3. In the present invention, in order to avoid the rigid collision between the electrode and the cylinder liner of the internal combustion engine during the deposition process, an electrode return spring is arranged inside the slideway of the electrode holder. When the electrode is in contact with the cylinder liner of the internal combustion engine, the electrode holder can be placed in the The electrode return spring is compressed in the slideway of the electrode holder and slides. When the electrode is separated from the cylinder liner of the internal combustion engine, the electrode holder drives the electrode to return under the action of the electrode return spring.

4. In order to solve the problem of the rotary vibration of the electrode, the present invention realizes the rotation of the electrode by controlling the rotational speed of the motor, drives the electrode rotary vibration device to move upward through the rotation of the cam, and the return spring of the electrode rotary vibration device is compressed and deformed to restore the original state. The downward movement of the electrode rotating vibration device realizes the up and down vibration of the electrode.

5. In the present invention, in order to solve the insulation problem between the machine tool and the power supply of the EDM, an insulating sleeve for electrical separation is designed on the electrode rotary vibration device to ensure the safety of the machine tool operator.

6. In order to solve the problem that the high-frequency pulse of the EDM is smoothly transmitted to the electrode, the present invention installs the positive electrode bearing of the deposition power source in the installation part of the positive electrode bearing of the deposition power source. The outer ring is stationary during rotation, which is convenient for the connection between the positive electrode bearing of the deposition power supply and the positive electrode of the power supply of the EDM deposition machine; the second is that the positive electrode of the power supply connected to the positive electrode bearing of the deposition power supply can be transmitted through the outer ring, roller and inner ring of the positive electrode bearing of the deposition power supply. to the electrode holder and then to the electrode so that the electrode is at the same potential as the positive bearing of the deposition power source.

7. The present invention can obtain an electric spark deposition mechanism for the wear-resistant coating on the inner wall of the cylinder liner of an internal combustion engine.

Description of drawings

FIG. 1 is a schematic structural diagram of the support shaft according to the first embodiment.

FIG. 2 is a schematic structural diagram of the web according to the first embodiment.

FIG. 3 is a schematic structural diagram of the stent according to Embodiment 1. FIG.

FIG. 4 is a schematic structural diagram of the power device according to the first embodiment.

FIG. 5 is a schematic structural diagram of the cam rotating device according to the first embodiment.

FIG. 6 is a schematic structural diagram of the electrode rotating vibration device according to the first embodiment.

FIG. 7 is a schematic structural diagram of the protective gas pipeline according to the first embodiment.

FIG. 8 is a schematic structural diagram of the rolling bearing fixing plate according to the first embodiment.

FIG. 9 is a schematic structural diagram of the key according to Embodiment 1. FIG.

FIG. 10 is a schematic structural diagram of the driving gear according to the first embodiment.

FIG. 11 is a schematic structural diagram of the cam rotating shaft according to the first embodiment.

FIG. 12 is a schematic structural diagram of the cam according to the first embodiment.

FIG. 13 is a schematic structural diagram of the driven gear according to Embodiment 1. FIG.

FIG. 14 is a schematic structural diagram of the electrode according to Embodiment 1. FIG.

FIG. 15 is a schematic structural diagram of the electrode holder according to Embodiment 1. FIG.

FIG. 16 is a schematic structural diagram of the positive electrode bearing of the deposition power source according to the first embodiment.

FIG. 17 is a schematic structural diagram of the electrode holder slideway according to Embodiment 1. FIG.

FIG. 18 is a schematic structural diagram of the electrode return spring according to Embodiment 1. FIG.

FIG. 19 is a schematic structural diagram of the insulating sleeve according to the first embodiment.

FIG. 20 is a schematic structural diagram of the roller fastener according to Embodiment 1. FIG.

FIG. 21 is a schematic structural diagram of the bearing retaining ring according to Embodiment 1. FIG.

FIG. 22 is a schematic structural diagram of the cylindrical pin according to Embodiment 1. FIG.

23 is a schematic structural diagram of the return spring of the electrode rotary vibration device according to the first embodiment.

24 is a schematic structural diagram of an EDM deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to Embodiment 1.

FIG. 25 is a left side view of an EDM deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to Embodiment 1. FIG.

Detailed ways

Embodiment 1: This embodiment is an electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine, including a support shaft (1), a web (2), a bracket (3), a power unit (4), a cam rotating The device (5), the electrode rotating vibration device (6), the protective gas pipeline (7); the support shaft (1) comprises a support shaft body (1-1), a threaded hole (1-2) connecting the lower end of the web, A motor mounting part (1-3) and a rolling bearing mounting part (1-4); the web (2) includes a web body (2-1), a threaded hole (2-2) for connecting the support shaft and a A threaded hole (2-3); the bracket (3) includes a bracket body (3-1), a protective gas pipeline fixing seat (3-2), a bolt connection hole (3-3), an electrode rotary vibration device telescopic hole ( 3-4) and a threaded hole (3-5) connecting the upper end of the web; the power unit (4) includes a motor (4-1), a key (4-2) and a driving gear (4-3); the The cam rotating device (5) includes a cam rotating shaft (5-1), a cam (5-2), a key (5-3), a driven gear (5-4) and a key (5-5); the electrode rotating The vibration device (6) includes an electrode (6-1), a set screw (6-2), an electrode holder (6-3), an electrode return spring (6-4), and an electrode holder slideway (6). -5), screws (6-6), insulating sleeves (6-7), motors (6-8), nuts (6-9), bolts (6-10), roller fasteners (6-11), Bearing retaining ring (6-12), cylindrical pin (6-13), roller (6-14), electrode rotary vibration device return spring (6-15), bolt (6-16), nut (6-17) and a positive electrode bearing (6-18) of a deposition power source; the protective gas pipeline (7) includes a protective gas nozzle (7-1), a protective gas pipeline body (7-2), and a protective gas hose joint (7-3); The protective gas pipeline (7) is fixed on the protective gas pipeline fixing seat (3-2) of the bracket (3) by means of a set screw (10), and the electrode rotating vibration device (6) is fixed by the bolt (6-16) and nuts (6-17) are mounted on the bracket (3), and both ends of the cam rotating shaft (5-1) of the cam rotating device (5) are respectively fixed to the rolling bearing mounting parts (1-4) located on the support shaft (1). ) of the rolling bearing (11) and the inner ring of the rolling bearing (13) located in the rolling bearing mounting part (8-1) of the rolling bearing fixing plate (12), the rolling bearing fixing plate (12) is fixed to the bracket by bolts (14) On (3), the motor (4-1) of the power unit (4) is mounted on the motor mounting part (1-3) of the support shaft (1), and the bracket (3) is fixed to the web (2) by bolts (9). ), the web (2) is fixed on the support shaft (1) by bolts (8).

Figure 1 is a schematic structural diagram of the support shaft according to the first embodiment: in Figure 1 (1-1) is the support shaft body, (1-2) is the threaded hole connecting the lower end of the web, (1-3) is the motor The mounting part, (1-4) is the rolling bearing mounting part.

Figure 2 is a schematic structural diagram of the web according to the first embodiment: in Figure 2 (2-1) is the body of the web, (2-2) is the threaded hole for connecting the support shaft, and (2-3) is the connecting bracket threaded holes.

Fig. 3 is the structural schematic diagram of the bracket described in the specific embodiment one: in Fig. 3 (3-1) is the bracket body, (3-2) is the protective gas pipeline fixing seat, (3-3) is the bolt connection hole, ( 3-4) is the telescopic hole of the electrode rotary vibration device, and (3-5) is the threaded hole connecting the upper end of the web.

Fig. 4 is a schematic structural diagram of the power device according to the first embodiment: in Fig. 4 (4-1) is a motor, (4-2) is a key, and (4-3) is a driving gear.

Fig. 5 is a structural schematic diagram of the cam rotating device according to the first embodiment: in Fig. 5 (5-1) is a cam rotating shaft, (5-2) is a cam, (5-3) is a key, (5-4) ) is the driven gear, (5-5) is the key.

Figure 6 is a schematic structural diagram of the electrode rotary vibration device according to the first embodiment: in Figure 6 (6-1) is an electrode, (6-2) is a set screw, (6-3) is an electrode holder, (6-4) is the electrode return spring, (6-5) is the electrode holder slideway, (6-6) is the screw, (6-7) is the insulating sleeve, (6-8) is the motor, ( 6-9) is the nut, (6-10) is the bolt, (6-11) is the roller fastener, (6-12) is the bearing retaining ring, (6-13) is the cylindrical pin, (6-14) is the roller, (6-15) is the return spring of the electrode rotary vibration device, (6-16) is the bolt, (6-17) is the nut, and (6-18) is the positive electrode bearing of the deposition power source.

Fig. 7 is the structural schematic diagram of the protective gas pipeline described in the first embodiment: in Fig. 7 (7-1) is the protective gas nozzle, (7-2) is the protective gas pipeline body, and (7-3) is the protective gas soft pipe fittings.

FIG. 8 is a schematic structural diagram of the rolling bearing fixing plate according to the first embodiment: (8-1) in FIG. 8 is the rolling bearing mounting part, and (8-2) is the threaded hole connected with the bolt (14).

FIG. 9 is a schematic structural diagram of the key according to Embodiment 1. FIG.

FIG. 10 is a schematic structural diagram of the driving gear according to the first embodiment.

Fig. 11 is a schematic diagram of the structure of the cam rotating shaft according to the first embodiment: in Fig. 11 (11-1) is the keyway of the fixed cam (5-2), (11-2) is the fixed driven gear (5-4) ) keyway.

FIG. 12 is a schematic structural diagram of the cam according to the first embodiment.

FIG. 13 is a schematic structural diagram of the driven gear according to Embodiment 1. FIG.

FIG. 14 is a schematic structural diagram of the electrode according to Embodiment 1. FIG.

Fig. 15 is a schematic view of the structure of the electrode holder according to the first embodiment: in Fig. 15 (15-1) is an electrode holder, (15-2) is a set screw connection hole, (15-3) is a The installation part of the positive electrode bearing of the deposition power source, (15-4) is the body of the electrode holder.

FIG. 16 is a schematic structural diagram of the positive electrode bearing of the deposition power source according to the first embodiment.

Figure 17 is a schematic view of the structure of the electrode holder slideway according to Embodiment 1: (17-1) in Figure 17 is the electrode holder mounting part, (17-2) is the electrode holder slideway body, (17-3) is the electrode return spring installation part, and (17-4) is the screw connection threaded hole.

FIG. 18 is a schematic structural diagram of the electrode return spring according to Embodiment 1. FIG.

FIG. 19 is a schematic structural diagram of the insulating sleeve according to the first embodiment.

Fig. 20 is a schematic structural diagram of the roller fastener according to the first embodiment: in Fig. 20 (20-1) is the hole connected with the bolt (6-10), (20-2) is the hole connected with the bolt (6-16) ) connection hole, (20-3) is the cylindrical pin connection hole.

FIG. 21 is a schematic structural diagram of the bearing retaining ring according to Embodiment 1. FIG.

FIG. 22 is a schematic structural diagram of the cylindrical pin according to Embodiment 1. FIG.

23 is a schematic structural diagram of the return spring of the electrode rotary vibration device according to the first embodiment.

Fig. 24 is a schematic structural diagram of an electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to Embodiment 1: in Fig. 24, (1) is a support shaft, (2) is a web, and (3) is a Bracket, (4) is a power device, (5) is a cam rotating device, (6) is an electrode rotary vibration device, (7) is a protective gas pipeline, (8) is a bolt, (9) is a bolt, and (10) is a screw , (11) is the rolling bearing.

Figure 25 is a left side view of an EDM deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to Embodiment 1: (12) in Figure 25 is a rolling bearing fixing plate, (13) is a rolling bearing, and (14) is a rolling bearing. bolt.

Principles and advantages of this embodiment.

1. In this embodiment, the cylinder liner of the internal combustion engine is fixed on the three-jaw chuck of the CNC lathe, and the EDM deposition mechanism of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine is clamped on the tool holder of the CNC lathe through the support shaft (1). Control the spindle speed of the CNC lathe, drive the cylinder liner of the internal combustion engine to make a rotary motion, and control the feed speed of the CNC lathe to drive the wear-resistant coating EDM deposition mechanism on the inner wall of the cylinder liner of the internal combustion engine to make a feeding motion, and give full play to the function of the CNC lathe. The electric spark deposition of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine is realized under the rotary vibration of the electrode (6-1) of the electric spark deposition mechanism for the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine.

2. This embodiment realizes the numerical control and automation of the EDM deposition process of the wear-resistant coating on the inner wall of the cylinder liner of the internal combustion engine, overcomes many shortcomings of manual deposition, and thus achieves high-efficiency and high-quality deposition of the wear-resistant coating.

3. In this embodiment, in order to avoid the rigid collision between the electrode (6-1) and the cylinder liner of the internal combustion engine during the deposition process, an electrode return spring (6-4) is provided inside the electrode holder slideway (6-5), When the electrode (6-1) is in contact with the cylinder liner of the internal combustion engine, the electrode holder (6-3) can compress the electrode return spring (6-4) and slide in the electrode holder slideway (6-5), When the electrode (6-1) is separated from the cylinder liner of the internal combustion engine, the electrode holder (6-3) drives the electrode (6-1) to return under the action of the electrode return spring (6-4).

4. In this embodiment, in order to solve the problem of the rotational vibration of the electrode (6-1), the rotation of the electrode (6-1) is realized by controlling the rotational speed of the motor (6-8), and the roller (6-1) is driven by the rotation of the cam (5-2). 6-14) Drive the electrode rotary vibration device (6) to move upward, and the return spring (6-15) of the electrode rotary vibration device is compressed and deformed to return to its original state, so that the electrode rotary vibration device (6) moves downward to realize the electrode (6-1) ) up and down vibration.

5. In this embodiment, in order to solve the insulation problem between the machine tool and the power supply of the EDM, an insulating sleeve (6-7) for electrical separation is designed on the electrode rotary vibration device (6) to ensure the safety of the machine tool operator. .

6. In this embodiment, in order to solve the problem that the high-frequency pulse of the EDM is smoothly conducted to the electrode (6-1), the positive electrode bearing (6-18) of the deposition power source is installed in the positive electrode bearing installation part (15-3) of the deposition power source, which is Function: First, realize that the inner ring of the positive electrode bearing (6-18) of the deposition power source is stationary when the inner ring rotates with the electrode holder (6-3), which is convenient for the positive electrode bearing (6-18) of the deposition power source and the power supply of the EDM machine. The connection of the positive electrode; the second is that the positive electrode of the power supply connected to the positive electrode bearing of the deposition power source (6-18) can be transmitted to the electrode holder (6-3) through the outer ring, roller and inner ring of the positive electrode bearing of the deposition power source (6-18). ), and then to the electrode (6-1), so that the electrode (6-1) and the positive electrode bearing (6-18) of the deposition power source have the same potential.

7. In this embodiment, an electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine can be obtained.

Embodiment 2: The difference between this embodiment and Embodiment 1 is that the support shaft (1) is L-shaped and made of aluminum alloy with better rigidity and lighter weight. Others are the same as the first embodiment.

Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the web (2) is L-shaped and made of aluminum alloy with better rigidity and lighter weight. Others are the same as in the first or second embodiment.

Embodiment 4: The difference between this embodiment and Embodiments 1 to 3 is that the bracket (3) is a frame structure formed by welding aluminum alloy plates with better rigidity and lighter weight. Others are the same as those in Embodiments 1 to 3.

Embodiment 5: The difference between this embodiment and Embodiments 1 to 4 is that the motor (4-1) and the driving gear (4-3) of the power device (4) are connected by a key (4-2) connect. Others are the same as those in Embodiments 1 to 4.

Embodiment 6: The difference between this embodiment and Embodiments 1 to 5 is that the cam (5-2) of the cam rotating device (5) is fixed to the cam rotating shaft (5) through a key (5-3). -1), the driven gear (5-4) is fixed to the cam rotating shaft (5-1) through the key (5-5), and the power is transmitted to the driving gear (4-3) through the motor (4-1). ), then to the driven gear (5-4), then to the cam rotating shaft (5-1), and finally to the cam (5-2). Others are the same as the specific embodiments 1 to 5.

Embodiment 7: The difference between this embodiment and Embodiments 1 to 6 is that the electrode (6-1) is a rod-shaped electrode, which is fixed to the electrode holding part (15-2) by a set screw (6-2). 1), the rotational speed of the electrode (6-1) is controlled by the rotational speed of the motor (6-8), and the up and down vibration of the electrode (6-1) is controlled by the rotation of the cam (5-2) and the rotation of the electrode. It is realized by the compression deformation and restoration of the return spring (6-15) of the vibration device. Others are the same as the specific embodiments 1 to 6.

Embodiment 8: The difference between this embodiment and Embodiments 1 to 7 is that the electrode holder (6-3) is installed in the electrode holder slideway (6-5), the electrode holder (6-5) is An electrode return spring (6-4) is arranged inside the gripper slideway (6-5), and the electrode (6-1) can slide on the electrode gripper (6-3) under the driving of the electrode gripper (6-3). The electrode return spring (6-4) is compressed in the channel (6-5), and slides up and down in the electrode holder slide channel (6-5) to avoid rigid collision between the electrode (6-1) and the cylinder liner of the internal combustion engine. Others are the same as the specific embodiments 1 to 7.

Embodiment 9: The difference between this embodiment and Embodiments 1 to 8 is: the positive electrode bearing (6-18) of the deposition power supply is used to connect the positive electrode of the deposition machine power supply, and the cylinder liner of the internal combustion engine is connected to the negative electrode of the deposition machine power supply, so The deposition power supply anode bearing (6-18) is mounted on the deposition power supply anode bearing mounting part (15-3), and the deposition power supply anode bearing (6-18) is an industrial bearing. Others are the same as the specific embodiments 1 to 8.

Embodiment 10: The difference between this embodiment and Embodiments 1 to 9 is that the insulating sleeves (6-7) are coaxial parts, made of nylon or polytetrafluoroethylene, and the insulating sleeves (6-7). ) and the motor (6-8) are in an interference connection, and the electrode holder slideway (6-5) and the insulating sleeve (6-7) are also in an interference connection, and are further reinforced by screws (6-6). Others are the same as the specific embodiments 1 to 9.

Embodiment 11: The difference between this embodiment and Embodiments 1 to 10 is that the roller fastener (6-11) is fixed to the motor through nuts (6-9) and bolts (6-10). On (6-8), the roller fastener (6-11) is provided with a hole (20-2) connected with the bolt (6-16), and the roller fastener (6-11) It is fixed in the bracket (3) with bolts (6-16) and nuts (6-17). Between the roller fastener (6-11) and the bracket (3), the roller (6-14) is fixed to the roller fastener (6-14) through the bearing retaining ring (6-12) and the cylindrical pin (6-13). 6-11), the roller (6-14) is an industrial bearing. Others are the same as those in Embodiments 1 to 10.

Claims (10)

1. An electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine, characterized in that: by a support shaft (1), a web (2), a bracket (3), a power unit (4), a cam rotating device ( 5), consisting of an electrode rotary vibration device (6) and a protective gas pipeline (7); the support shaft (1) comprises a support shaft body (1-1), a threaded hole (1-2) connecting the lower end of the web, a motor A mounting part (1-3) and a rolling bearing mounting part (1-4); the web (2) comprises a web body (2-1), a threaded hole (2-2) for connecting the support shaft and a thread for connecting the bracket A hole (2-3); the bracket (3) includes a bracket body (3-1), a protective gas pipeline fixing seat (3-2), a bolt connection hole (3-3), an electrode rotary vibration device telescopic hole (3) -4) and the threaded hole (3-5) connecting the upper end of the web; the power unit (4) includes a motor (4-1), a key (4-2) and a driving gear (4-3); the cam The rotating device (5) includes a cam rotating shaft (5-1), a cam (5-2), a key (5-3), a driven gear (5-4) and a key (5-5); the electrode rotating vibration The device (6) includes an electrode (6-1), a set screw (6-2), an electrode holder (6-3), an electrode return spring (6-4), and an electrode holder slideway (6- 5), screws (6-6), insulating sleeves (6-7), motors (6-8), nuts (6-9), bolts (6-10), roller fasteners (6-11), bearings Retaining ring (6-12), cylindrical pin (6-13), roller (6-14), electrode rotary vibration device return spring (6-15), bolt (6-16), nut (6-17) and A positive electrode bearing (6-18) of a deposition power source; the protective gas pipeline (7) includes a protective gas nozzle (7-1), a protective gas pipeline body (7-2), and a protective gas hose joint (7-3); The protective gas pipeline (7) is fixed on the protective gas pipeline fixing seat (3-2) of the bracket (3) by means of a set screw (10), and the electrode rotating vibration device (6) is fixed by the bolt (6-16) and nuts (6-17) are mounted on the bracket (3), and both ends of the cam rotating shaft (5-1) of the cam rotating device (5) are respectively fixed to the rolling bearing mounting parts (1-4) located on the support shaft (1). ) of the rolling bearing (11) and the inner ring of the rolling bearing (13) located in the rolling bearing mounting part (8-1) of the rolling bearing fixing plate (12), the rolling bearing fixing plate (12) is fixed to the bracket by bolts (14) On (3), the motor (4-1) of the power unit (4) is mounted on the motor mounting part (1-3) of the support shaft (1), and the bracket (3) is fixed to the web (2) by bolts (9). ), the web (2) is fixed on the support shaft (1) by bolts (8). 2. The EDM deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the support shaft (1) is L-shaped, and the material is of better rigidity and lighter weight of aluminum alloy. 3. The EDM deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the bracket (3) is welded by an aluminum alloy plate with better rigidity and lighter quality. formed frame structure. 4. The mechanism for EDM deposition of wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the motor (4-1) of the power unit (4) and the driving gear (4- 3) is connected by key (4-2). 5. The mechanism for EDM deposition of wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the cam (5-2) of the cam rotating device (5) is formed by a key (5). -3) Fixed on the cam rotating shaft (5-1), the driven gear (5-4) is fixed on the cam rotating shaft (5-1) through the key (5-5), and the power is passed through the motor (4- 1) It is transmitted to the driving gear (4-3), then to the driven gear (5-4), then to the cam rotating shaft (5-1), and finally to the cam (5-2). 6. The electric spark deposition mechanism for wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the electrode (6-1) is a rod-shaped electrode, and the set screw (6-2) ) is fixed on the electrode holding part (15-1), the rotation speed of the electrode (6-1) is controlled by the rotation speed of the motor (6-8), and the vertical vibration of the electrode (6-1) is controlled by the cam The rotation of (5-2) and the compressive deformation and restoration of the return spring (6-15) of the electrode rotary vibration device are realized. 7. A mechanism for EDM deposition of wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the electrode holder (6-3) is installed on the electrode holder slide (6-3). In 6-5), the electrode holder slideway (6-5) is provided with an electrode return spring (6-4), and the electrode (6-1) is located at the bottom of the electrode holder (6-3). Driven, the electrode return spring (6-4) can be compressed in the electrode holder slideway (6-5), and slide up and down in the electrode holder slideway (6-5) to avoid the electrode holder (6-1). ) rigidly collides with the cylinder liner of the internal combustion engine. 8. a kind of internal combustion engine cylinder liner inner wall wear-resistant coating EDM deposition mechanism according to claim 1, is characterized in that: described deposition power supply anode bearing (6-18) is used to connect deposition machine power supply anode, internal combustion engine The cylinder liner is connected to the negative electrode of the power supply of the deposition machine, the positive electrode bearing (6-18) of the deposition power source is installed on the positive electrode bearing mounting part (15-3) of the deposition power supply, and the positive electrode bearing (6-18) of the deposition power source is for industrial use bearing. 9 . The wear-resistant coating EDM deposition mechanism for the inner wall of a cylinder liner of an internal combustion engine according to claim 1 , wherein the insulating sleeve (6-7) is a coaxial part, and the material is nylon or polyamide. 10 . Tetrafluoroethylene, the insulating sleeve (6-7) and the motor (6-8) are in an interference connection, and the electrode holder slideway (6-5) and the insulating sleeve (6-7) are also in an interference connection, and are connected through Screws (6-6) are further reinforced. 10. A mechanism for EDM deposition of wear-resistant coating on the inner wall of a cylinder liner of an internal combustion engine according to claim 1, characterized in that: the roller fastener (6-11) is formed by a nut (6-9) and a The bolts (6-10) are fixed on the motor (6-8), and the roller fasteners (6-11) are provided with holes (20-2) connected with the bolts (6-16). The roller fastener (6-11) is fixed in the bracket (3) with bolts (6-16) and nuts (6-17), and the return spring (6-15) of the electrode rotating vibration device is sleeved on the bolts (6-16) is installed between the roller fastener (6-11) and the bracket (3), the roller (6-14) passes through the bearing retaining ring (6-12) and the cylindrical pin (6- 13) It is fixed on the roller fastener (6-11), and the roller (6-14) is an industrial bearing.

Images