Automatic electrode cap spherical grinding machine

Abstract

The invention discloses an automatic electrode cap spherical grinding machine, which comprises a bracket, an X-axis swing mechanism, a Y-axis swing mechanism, a Z-axis floating mechanism and a grinding wheel arranged on the bracket, wherein the grinding wheel can move up and down with the Z-axis floating mechanism to form a first grinding track of the electrode cap by the grinding wheel in the direction of the Z-axis; the Y-axis swing mechanism is movably connected with the Z-axis floating mechanism, and the Z-axis floating mechanism swings left and right at the swing center point of the Y-axis swing mechanism to form a second arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the Y-axis is located; the X-axis swing mechanism is movably connected with the Y-axis swing mechanism, and the Y-axis swing mechanism swings left and right at the swing center point of the X-axis swing mechanism to form a third arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the X-axis is located; the first grinding track, the second arc-shaped grinding track, the third arc-shaped grinding track and the rotation track of the grinding wheel itself are combined to form the spherical grinding of the electrode cap. The tip of the electrode cap of the invention has staggered textures and a rough surface.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, in particular to an automatic electrode cap spherical surface grinding machine. Background Art

[0002] In the fields of automobile and locomotive manufacturing, electrode burnout in aluminum alloy resistance spot welding shortens the service life of the electrode, requiring frequent grinding and replacement of the electrode. Figure 1 to Figure 2 The aluminum welding electrode cap requires that the welding contact surface at the tip be rough and have staggered textures. Since the conventional electrode cap grinding blade is usually rotated in one direction for grinding, the tool holder is usually fixed, and the blade contacts and fits the curvature of the electrode cap tip, and is horizontally rotated for grinding. The trimmed electrode cap tip has a horizontal circular texture and cannot form a staggered texture. Therefore, it cannot meet the grinding requirements for staggered textures and rough surfaces. Summary of the invention

[0003] The invention provides an automatic electrode cap spherical surface grinding machine, which can achieve the purpose of grinding the tip of the electrode cap to achieve staggered textures and a rough surface.

[0004] The present invention adopts the following technical solutions:

[0005] An automatic electrode cap spherical grinding machine comprises a bracket, characterized in that it also comprises an X-axis swing mechanism, a Y-axis swing mechanism, a Z-axis floating mechanism and a grinding wheel arranged on the bracket, the grinding wheel can move up and down with the Z-axis floating mechanism to form a first grinding track of the electrode cap by the grinding wheel in the direction of the Z-axis; the Y-axis swing mechanism is movably connected to the Z-axis floating mechanism, the Z-axis floating mechanism swings left and right with the swing center point of the Y-axis swing mechanism, forming a second arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the Y-axis is located; the X-axis swing mechanism is movably connected to the Y-axis swing mechanism, the Y-axis swing mechanism swings left and right with the swing center point of the X-axis swing mechanism, forming a third arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the X-axis is located; the first grinding track, the second arc-shaped grinding track, the third arc-shaped grinding track and the grinding wheel's own rotation track are combined to form the spherical grinding of the electrode cap.

[0006] In this scheme, through the relative movement of the X-axis swing mechanism, the Y-axis swing mechanism and the Z-axis floating mechanism in three directions, the grinding wheel is swung in an arc shape in the X-axis and Y-axis directions, and the Z-axis floats up and down. The position of the grinding wheel is located at the intersection of the motion trajectories in three different directions, so that the grinding wheel moves up and down along the circumference of the tip of the electrode cap during grinding, forming a staggered texture. The grinding wheel makes the texture rough, thereby meeting the grinding use requirements.

[0007] Preferably, the X-axis swing mechanism comprises a motor, an X-axis crank connecting rod, an X-axis swing center axis, an X-axis swing rocker and an X-axis bearing plate. The motor drives the X-axis crank connecting rod to drive the X-axis swing rocker to swing left and right around the X-axis swing center axis. The X-axis swing rocker is relatively movably connected to the X-axis bearing carrier plate, and the X-axis bearing carrier plate is fixedly connected to the Y-axis swing mechanism.

[0008] As an improvement of the above scheme, the X-axis swing mechanism also includes an X-axis fixed plate and an X-axis bearing plate rotating shaft, and the X-axis swing center axis and the X-axis bearing plate rotating shaft are respectively fixedly arranged on the X-axis fixed plate; a through hole is arranged on the X-axis swing rocker, and the X-axis bearing plate rotating shaft passes through the through hole and is rotatably connected to the X-axis bearing plate, and the X-axis swing rocker is hinged to the X-axis bearing plate.

[0009] In this solution, the X-axis fixed plate is connected to the bracket, and the X-axis swing center axis and the X-axis bearing plate rotation axis are fixed on the X-axis fixed plate respectively, in order to increase the load-bearing capacity by allowing the Y-axis swing mechanism, the Z-axis floating mechanism and the grinding wheel mechanism to bear all the weight. The X-axis bearing plate swings left and right with the X-axis bearing plate rotation axis as the center, and the X-axis swing rocker is articulated. The two-stage remote control rod cascade design can reduce the driving force while increasing the stability of the X-axis bearing plate load-bearing capacity.

[0010] Preferably, the Y-axis swing mechanism includes a motor, a Y-axis crank connecting rod, a Y-axis swing center axis, a Y-axis swing rocker and a Y-axis bearing plate. The motor drives the Y-axis crank connecting rod to drive the Y-axis swing rocker to swing left and right around the Y-axis swing center axis; the Y-axis swing rocker is movably connected to the Y-axis bearing carrier plate, and the Y-axis bearing carrier plate is fixedly connected to the Z-axis floating mechanism.

[0011] As an improvement of the above scheme, the Y-axis swing mechanism also includes a Y-axis fixed plate and a Y-axis bearing carrier plate rotating shaft, and the Y-axis swing center axis and the Y-axis bearing carrier plate rotating shaft are respectively fixedly arranged on the Y-axis fixed plate; a through hole is arranged on the Y-axis swing rocker, and the Y-axis bearing carrier plate rotating shaft passes through the through hole and is rotatably connected to the Y-axis bearing carrier plate, and the Y-axis swing rocker is hinged to the Y-axis bearing carrier plate.

[0012] In this solution, the Y-axis swing center axis and the Y-bearing carrier plate rotation axis are fixed on the Y-axis fixed plate respectively, in order to increase the load-bearing capacity by allowing the Z-axis floating mechanism and the grinding wheel mechanism to bear all the weight. The Y-bearing carrier plate swings left and right with the Y-bearing carrier plate rotation axis as the center, and the Y-axis swing rocker is linked by a hinge. The two-stage remote control rod cascade design can reduce the driving force while increasing the stability of the Y-bearing carrier plate load-bearing capacity.

[0013] Preferably, the Z-axis floating mechanism includes a guide rail and a slider sliding along the guide rail, the slider is fixedly connected to the grinder main shaft sleeve, and the grinder main shaft sleeve is provided with a grinder main shaft motor and the grinding wheel driven by it; the Y-axis bearing plate is fixedly connected to the guide rail.

[0014] Preferably, the grinding wheel is a diamond grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the rough and interlaced texture on the surface of the aluminum welding electrode cap after grinding the tip;

[0016] Figure 2 This is the structural diagram of the aluminum welding electrode cap before grinding;

[0017] Figure 3 It is the general assembly drawing of the automatic electrode cap spherical grinding machine of the present invention;

[0018] Figure 4 It is a rear view structural schematic diagram of the X-axis swing mechanism of the automatic electrode cap spherical grinding machine of the present invention;

[0019] Figure 5 It is a rear view structural schematic diagram of the Y-axis swing mechanism of the automatic electrode cap spherical grinding machine of the present invention;

[0020] Figure 6 This is the schematic diagram of X-axis swing grinding;

[0021] Figure 7 This is the schematic diagram of Y-axis swing grinding. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 3-5 An automatic electrode cap spherical grinding machine includes a bracket 1, an X-axis swing mechanism 2, a Y-axis swing mechanism 3, a Z-axis floating mechanism 4 and a grinding wheel 5 arranged on the bracket, the Y-axis swing mechanism is movably connected with the Z-axis floating mechanism, the Z-axis floating mechanism swings left and right with the swing center point of the Y-axis swing mechanism, forming a second arc-shaped grinding track 6 of the electrode cap on the plane where the Y-axis is located by the grinding wheel; the X-axis swing mechanism is movably connected with the Y-axis swing mechanism, the Y-axis swing mechanism swings left and right with the swing center point of the X-axis swing mechanism, forming a third arc-shaped grinding track 7 of the electrode cap on the plane where the X-axis is located by the grinding wheel; the grinding wheel can move up and down with the Z-axis floating mechanism, forming a first grinding track of the electrode cap by the grinding wheel in the direction of the Z-axis; the first grinding track, the second arc-shaped grinding track, the third arc-shaped grinding track and the circumferential rotation track of the grinding wheel itself are combined to form a spherical grinding of the electrode cap 8.

[0024] Working process: Through the relative movement of the X-axis swing mechanism, the Y-axis swing mechanism and the Z-axis floating mechanism, the grinding wheel is swung in an arc shape in the X-axis and Y-axis directions, and the Z-axis floats up and down. The intersection of the motion trajectories in three different directions is used to locate the position of the grinding wheel, so that the grinding wheel moves up and down along the circumference of the tip of the electrode cap during grinding, forming a staggered texture. The grinding wheel is a diamond grinding wheel, which makes the texture rough, thereby meeting the grinding requirements.

[0025] The X-axis swing mechanism 2 includes a motor 21, an X-axis crank link 22, an X-axis swing center axis 23, an X-axis swing rocker 24, an X-axis bearing plate 25, an X-axis fixed plate 26, and an X-axis bearing plate rotating shaft 27. The X-axis fixed plate 26 is fixed on the bracket 1, and the X-axis swing center axis and the X-axis bearing plate rotating shaft are respectively fixed on the X-axis fixed plate; the X-axis swing rocker 24 is provided with a through hole 241, and the X-axis bearing plate rotating shaft passes through the through hole 241 and is rotatably connected to the X-axis bearing plate 25, and the X-axis swing rocker is hinged to the X-axis bearing plate. The motor installed on the X-axis fixed plate drives the X-axis crank link, driving the X-axis swing rocker to swing left and right around the X-axis swing center axis, and the X-axis bearing carrier plate is linked to swing left and right around the X-axis bearing carrier plate rotation axis through the hinge 242. When the X-axis swing rocker swings slowly once, the grinding wheel will fit the spherical surface 8 of the electrode cap and grind it once. It is not difficult to understand that the X-axis swing is divided into countless equal parts, forming a third arc grinding track 7 of the grinding wheel on the electrode cap on the plane where the X-axis is located, referring to Figure 6 , the X-axis swing center axis is parallel to the X-axis swing rocker swing center line. The plane where the X-axis swing center axis and the X-axis swing rocker swing center line are located is perpendicular to the plane where the X-axis is located.

[0026] The Y-axis swing mechanism 3 includes a motor 31, a Y-axis crank link 32, a Y-axis swing center axis 33, a Y-axis swing rocker 34, a Y-axis bearing plate 35, a Y-axis fixed plate 36 and a Y-axis bearing plate rotating shaft 37. The Y-axis fixed plate 36 is vertically fixedly connected to the X-axis bearing plate 25, and the Y-axis swing center axis and the Y-axis bearing plate rotating shaft are respectively fixedly arranged on the Y-axis fixed plate; a through hole 341 is arranged on the Y-axis swing rocker, and the Y-axis bearing plate rotating shaft passes through the through hole and is rotatably connected to the Y-axis bearing plate, and the Y-axis swing rocker is hinged to the Y-axis bearing plate. The motor installed on the Y-axis fixed plate drives the Y-axis crank link, driving the Y-axis swing rocker to swing left and right around the Y-axis swing center axis, and the Y-axis bearing carrier plate is linked to swing left and right around the Y-axis bearing carrier plate rotation axis through the hinged hinge 342. When the Y-axis swing rocker slowly swings once, the grinding wheel will fit the spherical surface of the electrode cap 8 and grind it once. It is not difficult to understand here that the Y-axis swing is divided into countless equal parts, forming a second arc grinding track 6 of the grinding wheel on the electrode cap on the plane where the Y-axis is located, referring to Figure 7The Y-axis swing center axis is parallel to the Y-axis swing joystick swing center line. The plane where the Y-axis swing center axis and the Y-axis swing joystick swing center line are located is perpendicular to the plane where the Y axis is located.

[0027] It can be understood that the intersection of the plane where the X-axis swing center axis and the X-axis swing rocker swing center line are located, and the plane where the Y-axis swing center axis and the Y-axis swing rocker swing center line are located, the two planes are perpendicular to each other and are the setting position of the electrode cap.

[0028] The Z-axis floating mechanism 4 includes a guide rail 41 and a slider 42 sliding along the guide rail, the slider is fixedly connected to a grinder main shaft sleeve 51, and the grinder main shaft sleeve 51 is provided with a grinder main shaft motor 52 and a grinding wheel 5 driven by the grinder main shaft motor; the Y-axis bearing plate 35 is fixedly connected to the guide rail 41. The grinding wheel 5, the motor 52 and the grinder main shaft sleeve 51 move up and down with the slider 42, forming a first grinding track of the grinding wheel on the electrode cap in the direction of the Z axis.

[0029] The motor 21 on the X-axis fixing plate and the motor 52 on the Y-axis fixing plate can be combined with the contour line mode of machining CNC programming to perform spherical grinding.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic electrode cap spherical grinding machine, comprising a bracket, characterized in that: It also includes an X-axis swing mechanism, a Y-axis swing mechanism, a Z-axis floating mechanism and a grinding wheel arranged on the bracket, and the grinding wheel can move up and down with the Z-axis floating mechanism to form a first grinding track of the electrode cap by the grinding wheel in the direction of the Z-axis; The Y-axis swing mechanism is movably connected to the Z-axis floating mechanism, and the Z-axis floating mechanism swings left and right at the swing center point of the Y-axis swing mechanism, forming a second arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the Y-axis is located; The X-axis swing mechanism is movably connected to the Y-axis swing mechanism, and the Y-axis swing mechanism swings left and right at the swing center point of the X-axis swing mechanism, forming a third arc-shaped grinding track of the electrode cap by the grinding wheel on the plane where the X-axis is located; The first grinding track, the second arc-shaped grinding track, the third arc-shaped grinding track and the grinding wheel's own rotating track are combined to form the electrode cap spherical surface grinding; The X-axis swing mechanism comprises a motor, an X-axis crank connecting rod, an X-axis swing center axis, an X-axis swing rocker and an X-axis bearing plate. The motor drives the X-axis crank connecting rod to drive the X-axis swing rocker to swing left and right around the X-axis swing center axis. The X-axis swing rocker is relatively movably connected to the X-axis bearing carrier plate, and the X-axis bearing carrier plate is fixedly connected to the Y-axis swing mechanism; The X-axis swing mechanism also includes an X-axis fixed plate and an X-axis bearing carrier plate rotating shaft, and the X-axis swing center axis and the X-axis bearing carrier plate rotating shaft are respectively fixedly arranged on the X-axis fixed plate; The X-axis swing rocker is provided with a through hole, the X-axis bearing carrier plate rotation shaft passes through the through hole and is rotatably connected to the X-axis bearing carrier plate, and the X-axis swing rocker is hinged to the X-axis bearing carrier plate; The Y-axis swing mechanism includes a motor, a Y-axis crank link, a Y-axis swing center axis, a Y-axis swing rocker and a Y-axis bearing plate. The motor drives the Y-axis crank link to drive the Y-axis swing rocker to swing left and right around the Y-axis swing center axis. The Y-axis swing rocker is movably connected to the Y-axis bearing carrier plate, and the Y-axis bearing carrier plate is fixedly connected to the Z-axis floating mechanism; The Y-axis swing mechanism also includes a Y-axis fixed plate and a Y-axis bearing plate rotating shaft, and the Y-axis swing center axis and the Y-axis bearing plate rotating shaft are respectively fixedly arranged on the Y-axis fixed plate; The Y-axis swing rocker is provided with a through hole, the Y-axis bearing carrier plate rotating shaft passes through the through hole and is rotatably connected to the Y-axis bearing carrier plate, and the Y-axis swing rocker is hinged to the Y-axis bearing carrier plate; the Z-axis floating mechanism includes a guide rail and a slider sliding along the guide rail, the slider is fixedly connected to the grinder main shaft sleeve, and the grinder main shaft sleeve is provided with a grinder main shaft motor and the grinding wheel driven by the grinder main shaft motor; The Y-bearing carrier plate is fixedly connected to the guide rail; The Z-axis floating mechanism comprises a guide rail and a slider sliding along the guide rail, the slider is fixedly connected to the grinder main shaft sleeve, and the grinder main shaft sleeve is provided with a grinder main shaft motor and the grinding wheel driven by the grinder main shaft motor.

2. The automatic electrode cap spherical grinding machine according to claim 1, characterized in that: The grinding wheel is a diamond grinding wheel.

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