Z-axis chain counterweight structure of spark machine

Abstract

The Z-axis chain counterweight structure of the spark machine is characterized in that a plurality of guide rods are arranged on the lower surface of the top inside a rack, the bottom ends of the guide rods are connected with a guide rod lower fixing plate, and a lower spring is arranged on the upper surface of the guide rod lower fixing plate through a spring seat; an upper spring is further arranged on the portion, located on the lower surface of the top, in the machine frame through a spring seat, a balancing weight replacing through groove is formed in one side of the machine frame, assembling through grooves are further formed in the side walls of the two sides of the machine frame, and the balancing weight is movably arranged in the machine frame and is in sliding fit with the guide rods. The lifting stability of the balancing weight is greatly improved, the balancing weight is prevented from directly colliding with the connecting piece or the top of the rack in the debugging process through the lower spring and the upper spring, meanwhile, the balancing weight replacing through groove and the assembling through groove are formed in one side of the rack, the rack does not need to be opened when the balancing weight and the chain are connected and disassembled, and the assembling efficiency is improved. And therefore, the convenience during assembly is improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to machine tools, and more particularly to a Z-axis spindle counterweight technology for spark machines, in particular to a Z-axis chain counterweight structure for spark machines. Background Art

[0002] A spark machine, also known as an electric discharge machine (EDM), is a type of machining equipment widely used in the manufacture of various metal molds and mechanical equipment. It uses the electro-erosion effect generated by a pulsed discharge between two electrodes immersed in a working fluid to remove conductive materials. This is a specialized machining method also known as discharge machining or electro-erosion machining.

[0003] The Z-axis of a spark machine is the vertically ascending and descending Z-axis spindle, typically guided by a Z-axis guide rail and a lead screw assembly. Currently, some spark machines utilize a counterweight via ropes or chains, with the counterweight suspended directly within the machine frame. During machining, machine vibrations or resonance within the workshop can cause the counterweight to wobble, reducing stability. Furthermore, the counterweight can easily strike the top of the frame during commissioning. Furthermore, installing the counterweight requires opening the frame for installation or removal, which is inconvenient. Therefore, an improved technology is urgently needed to address these existing issues. Utility Model Content

[0004] The purpose of the present utility model is to provide a Z-axis chain counterweight structure for a spark machine, in which the counterweight is guided and lifted along a guide rod, which greatly improves the stability of the counterweight during lifting, thereby ensuring the stability of the Z-axis spindle, and avoids direct collision between the counterweight and the connecting piece or the top of the frame during debugging through the lower spring and the upper spring. At the same time, a counterweight replacement slot and an assembly slot are opened on one side of the frame. The counterweight replacement slot facilitates the installation and disassembly of the counterweight, and the assembly slot facilitates the connection and disassembly of the chain and the first connecting piece at the top of the counterweight. There is no need to open the frame when disassembling the connection and disassembly of the counterweight and the chain, thereby improving the convenience during assembly to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a Z-axis chain counterweight structure of a spark machine, comprising a frame, a Z-axis guide rail, a Z-axis spindle, a steering sprocket, a guide rod, a guide rod lower fixed plate, a counterweight block and a chain; a Z-axis guide rail is provided on one side of the frame and in a vertical direction, the Z-axis spindle slides with the Z-axis guide rail through a slider, a through hole is provided on the top of the frame, two steering sprockets are further provided on the upper surface of the frame through a bracket, a plurality of guide rods are provided on the lower surface of the frame and located at the top, the bottom end of the guide rod is connected to the guide rod lower fixed plate, and the two ends of the guide rod lower fixed plate are connected to the inner wall of the frame by bolts. The upper surface of the guide rod lower fixed plate is provided with a lower spring through a spring seat, and the lower surface of the frame located inside the top is also provided with an upper spring through a spring seat, a counterweight block replacement slot is provided on one side of the frame, and a support plate is provided inside the frame and below the counterweight block replacement slot, and assembly slots are also provided on the side walls on both sides of the frame, the counterweight block is movably arranged inside the frame and slidably cooperates with the guide rod, the counterweight block respectively corresponds to the positions of the lower spring and the upper spring, the upper surface of the counterweight block is connected to one end of the chain, and the other end of the chain passes through the through hole at the top of the frame and two steering sprockets and is connected to the top of the Z-axis spindle.

[0006] Preferably, the utility model provides a Z-axis chain counterweight structure for a spark machine, wherein the counterweight block is provided with a plurality of guide holes, and the guide holes correspond to the guide rods one by one and are slidably fitted.

[0007] Preferably, the utility model provides a Z-axis chain counterweight structure for a spark machine, wherein the counterweight replacement slot is located below the lower fixing plate of the guide rod.

[0008] Preferably, the utility model provides a Z-axis chain counterweight structure for a spark machine, wherein the bottom end of the guide rod is connected to a lower fixing plate of the guide rod by a bolt.

[0009] Preferably, the utility model provides a Z-axis chain counterweight structure for a spark machine, wherein a first connecting piece is provided on the upper surface of the counterweight block, a second connecting piece is provided on the upper surface of the Z-axis spindle, and both ends of the chain are connected to the first connecting piece and the second connecting piece respectively by bolts and nuts.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) When the Z-axis spindle is lifted and lowered along the Z-axis guide rail, the counterweight is lifted and lowered along the guide rod to avoid instability of the counterweight due to the operation of the spark machine or vibration of the site, thereby greatly improving the stability of the counterweight when it is lifted and lowered, thereby ensuring the stability of the Z-axis spindle.

[0012] (2) A lower spring is provided on the upper surface of the lower fixing plate of the guide rod through a spring seat, and an upper spring is provided on the lower surface inside the frame and located at the top through a spring seat. The lower spring and the upper spring are used to prevent the counterweight block from directly colliding with the connecting piece or the top of the frame during the debugging process, thereby preventing the frame or support plate from being damaged or making noise due to the collision.

[0013] (3) A counterweight replacement slot and an assembly slot are provided on one side of the frame. The counterweight replacement slot facilitates the installation and removal of the counterweight, and the assembly slot facilitates the connection and removal of the chain and the first connecting piece at the top of the counterweight. When the counterweight and the chain are connected and removed, there is no need to open the frame, thereby improving the convenience during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 Schematic diagram of the internal structure of the rack;

[0016] Figure 3 It is a schematic diagram of the counterweight structure from a top view.

[0017] In the figure: frame 1, Z-axis guide rail 2, Z-axis spindle 3, steering sprocket 4, guide rod 5, guide rod lower fixing plate 6, counterweight 7, chain 8, through hole 9, bracket 10, lower spring 11, upper spring 12, counterweight replacement slot 13, support plate 14, assembly slot 15, guide hole 16, first connecting member 17, second connecting member 18. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments and drawings of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that, in the description of the present invention, the terms "inside", "outside", "up", "down", "both sides", "one end", "the other end", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0020] See also Figure 1-3The utility model provides a technical solution: a Z-axis chain counterweight structure of a spark machine, comprising a frame 1, a Z-axis guide rail 2, a Z-axis spindle 3, a steering sprocket 4, a guide rod 5, a guide rod lower fixed plate 6, a counterweight 7 and a chain 8; a Z-axis guide rail 2 is arranged on one side of the frame 1 and in the vertical direction, and the Z-axis spindle 3 slides with the Z-axis guide rail 2 through a slider. A through hole 9 is opened at the top of the frame 1, and two steering sprockets 4 are also provided on the upper surface of the frame 1 through a bracket 10. A plurality of guide rods 5 are fixedly provided on the lower surface of the frame 1 and located at the top, and the bottom ends of the guide rods 5 are connected to the guide rod lower fixed plate 6 by bolts. The two ends of the guide rod lower fixed plate 6 are connected to the inner wall of the frame 1 by bolts, and the upper surface of the guide rod lower fixed plate 6 is provided with a lower spring 11 through a spring seat, and the lower surface of the frame 1 and located at the top is also provided with an upper spring 12 through a spring seat, and the counterweight 7 is provided with a plurality of guide holes 16. The counterweight 7 is sleeved on the guide rod 5 through the guide hole 16 and is fixed to the The guide rod 5 forms a sliding pair along the axial direction of the guide rod 5, and the counterweight block 7 is located between the lower spring 11 and the upper spring 12. A counterweight block replacement slot 13 is provided on one side of the frame 1, and the counterweight block replacement slot 13 is located below the guide rod lower fixed plate 6 to ensure that the counterweight block 7 can be directly plugged into and matched with the guide rod 5 after being placed inside the frame 1. A support plate 14 is fixed inside the frame 1 and below the counterweight block replacement slot 13. Assembly slots 15 are also provided on the side walls on both sides of the frame 1. The upper surface of the counterweight block 7 is connected to one end of the chain 8, and the other end of the chain 8 passes through the through hole 9 at the top of the frame 1 and the two steering sprockets 4 and is connected to the top of the Z-axis spindle 3. A first connecting piece 17 is provided on the upper surface of the counterweight block 7, and a second connecting piece 18 is provided on the upper surface of the Z-axis spindle 3. The two ends of the chain 8 are respectively connected to the first connecting piece 17 and the second connecting piece 18 by bolts and nuts, thereby respectively realizing the connection and disengagement of the chain 8 with the counterweight block 7 and the Z-axis spindle 3.

[0021] Installation and Operation: First, install the guide rod 5 at the top of the frame 1. Then, install the upper spring 12 via the spring seat. Next, place the counterweight 7 through the counterweight replacement slot 13 into the frame 1 and support it on the support plate 14. Lift the counterweight 7 upward, ensuring that its guide hole 16 slides into the guide rod 5. Next, bolt the guide rod lower fixing plate 6 to the bottom of the guide rod 5. Bolt both sides of the guide rod lower fixing plate 6 to the inner wall of the frame 1 to ensure the stability of the guide rod 5. Now, release the counterweight 7 and support it on the top surface of the guide rod lower fixing plate 6. Pass one end of the chain 8 through the through hole 9 at the top of the frame 1 and connect it to the first connector 17 on the top surface of the counterweight 7 (this can be done directly through the assembly slot 15 without opening the frame 1). Then, engage the other end of the chain 8 with the steering sprocket 4 and connect it to the second connector 18 on the top surface of the Z-axis spindle 3. The Z-axis spindle 3 is lowered along the Z-axis guide rail 2 by the cooperation of the servo motor and the lead screw pair. After the counterweight 7 is lifted, the lower spring 11 is installed through the connecting seat and the upper surface of the guide rod lower fixed plate 6. When in use, the Z-axis spindle 3 is lifted and lowered along the Z-axis guide rail 2 while the counterweight 7 is guided and lifted along the guide rod 5, avoiding the instability of the counterweight 7 due to the operation of the spark machine or the vibration of the site, greatly improving the stability of the counterweight 7 when it is lifted and lowered, thereby ensuring the stability of the Z-axis spindle 3; and the upper surface of the guide rod lower fixed plate 6 is provided with a lower spring 11 through a spring seat, and the lower surface inside the frame 1 and located at the top is also provided with an upper spring 12 through a spring seat, and the lower spring 11 and the upper spring 12 are used to avoid the instability of the counterweight 7 due to the adjustment During the test, the counterweight 7 collides directly with the connecting piece or the top of the frame 1 to avoid damage or noise to the frame 1 or the support plate 14 due to the collision; a counterweight replacement slot 13 and an assembly slot 15 are provided on one side of the frame 1. The counterweight replacement slot 13 facilitates the installation and removal of the counterweight 7, and the assembly slot 15 facilitates the connection and removal of the chain 8 and the first connecting piece 17 at the top of the counterweight 7. There is no need to open the frame 1 when disassembling the connection and removal of the counterweight 7 and the chain 8, thereby improving the convenience during assembly.

[0022] Anything not described in detail in the present invention is well known to those skilled in the art.

[0023] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A Z-axis chain counterweight structure for a spark machine, characterized by: The invention comprises a frame (1), a Z-axis guide rail (2), a Z-axis main shaft (3), a steering sprocket (4), a guide rod (5), a guide rod lower fixed plate (6), a counterweight (7) and a chain (8); a Z-axis guide rail (2) is provided on one side of the frame (1) and is located in a vertical direction; the Z-axis main shaft (3) is slidably matched with the Z-axis guide rail (2) through a slider; a through hole (9) is provided on the top of the frame (1); two steering sprockets (4) are also provided on the upper surface of the frame (1) through a bracket (10); a plurality of guide rods (5) are provided on the lower surface of the interior of the frame (1) and located at the top; the bottom ends of the guide rods (5) are connected to the guide rod lower fixed plate (6); the two ends of the guide rod lower fixed plate (6) are connected to the inner wall of the frame (1) through bolts; the upper surface of the guide rod lower fixed plate (6) is provided with a lower portion through a spring seat; Spring (11), the lower surface of the frame (1) located inside and at the top is also provided with an upper spring (12) through a spring seat, a counterweight replacement slot (13) is provided on one side of the frame (1), a support plate (14) is provided inside and below the counterweight replacement slot (13), and the side walls on both sides of the frame (1) are also provided with assembly slots (15), the counterweight (7) is movably arranged inside the frame (1) and slidably cooperates with the guide rod (5), the counterweight (7) corresponds to the position of the lower spring (11) and the upper spring (12), respectively, the upper surface of the counterweight (7) is connected to one end of the chain (8), and the other end of the chain (8) passes through the through hole (9) at the top of the frame (1) and the two steering sprockets (4) and is connected to the top of the Z-axis main shaft (3).

2. The Z-axis chain counterweight structure of a spark machine according to claim 1, characterized in that: The counterweight block (7) is provided with a plurality of guide holes (16), and the guide holes (16) correspond one-to-one with the guide rods (5) and are slidably fitted.

3. The Z-axis chain counterweight structure of a spark machine according to claim 1, characterized in that: The counterweight replacement slot (13) is located below the guide rod lower fixing plate (6).

4. The Z-axis chain counterweight structure of a spark machine according to claim 1, characterized in that: The bottom end of the guide rod (5) is connected to the guide rod lower fixing plate (6) via bolts.

5. The Z-axis chain counterweight structure of a spark machine according to claim 1, characterized in that: A first connecting member (17) is provided on the upper surface of the counterweight block (7), a second connecting member (18) is provided on the upper surface of the Z-axis spindle (3), and both ends of the chain (8) are connected to the first connecting member (17) and the second connecting member (18) respectively through bolts and nuts.

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