Machining method and machining equipment for hydraulic support push rod lip plate

Abstract

The invention relates to a machining method and machining equipment for a hydraulic support push rod lip plate, and the machining method comprises the steps that forging is conducted, specifically, a steel plate is freely forged, and a blocky forging stock is formed; punching: punching a through hole in the middle of the forging stock; machining: milling the upper surface and the lower surface of the forging stock in a machining mode, so that the thickness of the forging stock is consistent with a preset thickness; quenching and tempering: firstly quenching the forging stock, and then performing high-temperature tempering on the quenched forging stock; flame cutting is conducted, specifically, flame cutting is conducted on the forging stock according to the designed outline dimension of the hydraulic support push rod lip plate, a middle square hole is cut from the through hole, then the outline of the forging stock is cut, and the hydraulic support push rod lip plate is obtained. The machining method adopts a combined machining method of forging and flame cutting, does not need a mold, and has the advantages that the operation is simple and convenient, the quality is convenient to control, and the production cost can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic support processing, and in particular to a processing method and processing equipment for a hydraulic support push rod lip plate. Background Art

[0002] In the push rod structure of the hydraulic support, the lip plate is usually located at the front end or connection of the push rod, close to the connection point between the push rod and other key components. Its position is designed to provide additional load-bearing and fixing functions, especially when the push rod is extended or stressed, the lip plate can effectively disperse and support the pressure. The lip plate can enhance the strength of the push rod structure, play a guiding role in the push rod extension and retraction movement, and reduce the wear caused by friction and impact.

[0003] Most of the existing hydraulic support push rod lip plates are cut from thick steel plates. If they encounter complex force conditions, they need to be made of forged materials. The conventional method is die forging. Die forging refers to a forging method that uses a die to shape a blank on a special die forging device to obtain a forging. This method requires a die casting. However, hydraulic supports are basically small-batch products, and the cost of casting dies is high, so it is not economically cost-effective.

[0004] Therefore, there is an urgent need to provide a method and equipment for processing the push rod lip plate of a hydraulic support with low economic cost. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a processing method and equipment for a hydraulic support push rod lip plate, which solves the technical problem that the existing hydraulic support push rod lip plate adopts a die forging manufacturing method, which requires a die casting and leads to high production costs.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, an embodiment of the present invention provides a method for processing a hydraulic support push rod lip plate, comprising at least the following steps:

[0010] S1. Forging: Free forging is performed on the steel plate to form a block-shaped forging blank;

[0011] S2, stamping: stamping a through hole in the middle of the forging blank;

[0012] S3. Flame cutting: flame cutting is performed on the forging blank according to the designed outer contour dimensions of the hydraulic support push rod lip plate. First, the middle square hole is cut from the through hole, and then the outer shape of the forging blank is cut to obtain the hydraulic support push rod lip plate.

[0013] Optionally, the forging blank obtained by forging in step S1 has rounded corners, and in step S2, the diameter of the punched through hole is 60-70 mm.

[0014] Optionally, after step S2, the upper and lower surfaces of the forging blank are milled by machining so that the thickness of the forging blank is consistent with a preset thickness, and the preset thickness of the forging blank is 80-100 mm.

[0015] Optionally, before step S3, the machined forging blank is subjected to a quenching and tempering treatment: the forging blank is first quenched, and then the quenched forging blank is subjected to a high-temperature tempering treatment.

[0016] Optionally, the quenching treatment is to heat the forging blank to 850-1000° C. and then put it into water for cooling;

[0017] The high temperature tempering treatment is to reheat the quenched forging billet to 520-640° C. and keep it at this temperature for 2.5-3.5 hours.

[0018] Optionally, in step S3, the forging blank is divided into a first cutting area located in the middle of the forging blank and surrounding the through hole, a second cutting area located around the edges of the forging blank, and a reserved area between the first cutting area and the second cutting area according to the outer contour size of the designed hydraulic support push rod lip plate;

[0019] The flame cutting sequence is: first, the first cutting area is cut from the through hole of the forging blank to form a square hole inside the forging blank, and then the second cutting area is cut to form the outer shape of the forging blank.

[0020] In a second aspect, an embodiment of the present invention provides a processing device for a hydraulic support push rod lip plate for implementing the above-mentioned processing method, including a workbench, a positioning tool and a cutting manipulator device;

[0021] A positioning tool is placed on the workbench, the positioning tool comprises a base plate, a plurality of legs are arranged on the upper surface of the base plate, the plurality of legs are used to support the forging blank obtained in step S2, and the cutting robot device is used to flame cut the forging blank placed on the positioning tool.

[0022] Optionally, a plurality of positioning pin holes are provided on the workbench, positioning columns are inserted into the positioning pin holes, the positioning columns are arranged around the positioning tooling, and abut against the side surfaces of the bottom plate of the positioning tooling to clamp the positioning tooling on the workbench.

[0023] Optionally, the plurality of legs of the positioning tool are located below the reserved area, and top ends of the plurality of legs abut against the lower surface of the reserved area.

[0024] (III) Beneficial effects

[0025] The beneficial effects of the present invention are as follows: the processing method of the hydraulic support push rod lip plate of the present invention, the hydraulic support push rod lip plate includes a lip plate body, a square hole is opened in the middle of the lip plate body, and notches are opened on the front side and the rear side of the lip plate body. The processing method includes the following steps: forging: first forging a steel plate to form a square block forging blank, and then punching a through hole in the middle of the forging blank; S1, forging: free forging the steel plate to form a block forging blank; S2, punching: punching a through hole in the middle of the forging blank; S3, flame cutting: according to the designed The forging blank is flame cut according to the outer contour size of the hydraulic support push rod lip plate. First, the middle square hole is cut out from the through hole, and then the outer shape of the forging blank is cut to obtain the hydraulic support push rod lip plate. Compared with the existing hydraulic support push rod lip plate die forging manufacturing method, it adopts a combined processing method of forging and flame cutting, and does not require die casting, thereby greatly reducing the forging cost; in addition, the size of the forging blank is roughly equivalent to the part, which is a small part with low construction difficulty. The center punching can facilitate the subsequent cutting of the square hole, greatly reducing the difficulty of flame cutting and improving cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the push rod lip plate of the hydraulic support;

[0027] Figure 2 It is a flow chart of the method for processing the push rod lip plate of the hydraulic support of the present invention;

[0028] Figure 3 It is a schematic top view of the forging blank in step S1 of the method for processing the push rod lip plate of the hydraulic support of the present invention;

[0029] Figure 4 It is a front view schematic diagram of the positioning device in step S4 of the processing method of the hydraulic support push rod lip plate of the present invention;

[0030] Figure 5 It is a top view schematic diagram of the positioning device in step S4 of the processing method of the hydraulic support push rod lip plate of the present invention;

[0031] Figure 6 It is a schematic diagram of the front view of the positioning device and the forging blank in the step S4 of the processing method of the hydraulic support push rod lip plate of the present invention;

[0032] Figure 7 The diagram is a top view of a workbench, a positioning tool and a forging blank in step S4 of the method for processing a push rod lip plate of a hydraulic support according to the present invention.

[0033] [Description of Reference Numerals]

[0034] 1: lip plate body; 2: square hole; 3: notch; 4: forging blank; 401: first cutting area; 402: reserved area; 403: second cutting area; 5: through hole; 6: positioning tool; 61: bottom plate; 62: support leg; 7: workbench; 8: positioning column. DETAILED DESCRIPTION

[0035] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is used as a reference.

[0036] Reference Figures 1 to 7 The present embodiment provides a method for processing a hydraulic support push rod lip plate, wherein the hydraulic support push rod lip plate comprises a lip plate body 1, a square hole 2 is opened in the middle of the lip plate body 1, and notches 3 are opened on the front side and the rear side of the lip plate body 1. The processing method comprises at least the following steps:

[0037] S1, forging: firstly, the steel plate is subjected to free forging to form a block-shaped forging blank 4. This step does not require casting a die, thus significantly reducing the forging cost.

[0038] S2, stamping: punching a through hole 5 in the middle of the forging blank 4 (see Figure 3 The size of the forging billet is roughly the same as the part, which is a small part with low construction difficulty. The purpose of center punching is to facilitate the subsequent cutting of square holes, greatly reducing the difficulty of cutting and improving cutting efficiency.

[0039] S3, flame cutting: flame cutting is performed on the forging blank 4 according to the designed outer contour dimensions of the hydraulic support push rod lip plate. First, the middle square hole 2 is cut out from the through hole 5, and then the outer shape of the forging blank 4 is cut to obtain the hydraulic support push rod lip plate.

[0040] The processing method of the hydraulic support push rod lip plate of this embodiment adopts a combined processing method of forging and flame cutting, which has the advantages of simple operation, easy quality control, and can greatly reduce production costs.

[0041] Specifically, in step S1, the forging method is free forging. Free forging refers to the use of impact force or pressure to make the metal deform freely in all directions between the upper and lower anvil surfaces, without any restrictions to obtain forgings with the desired shape and size and certain mechanical properties. The tools and equipment used for free forging are simple, versatile, and low in cost. Free forging eliminates defects such as shrinkage cavities, shrinkage porosity, and pores, so that the forging blank 4 has higher mechanical properties.

[0042] Furthermore, the forging blank 4 obtained by forging in step S1 is allowed to have an R35 fillet, and the diameter of the through hole 5 punched in step S2 is 60-70 mm.

[0043] Optionally, after step S2, the upper and lower surfaces of the forging blank 4 are milled by machining, so that the thickness of the forging blank 4 is consistent with the preset thickness. The forging blank 4 obtained by forging in step S1 has unevenness in the thickness direction, so the two sides of the forging blank 4 are milled by machining to ensure that the thickness size is consistent with the designed thickness.

[0044] Specifically, in step S2, the preset thickness of the forging blank 4 is 80-100 mm.

[0045] Optionally, before step S3, the forging blank 4 after machining is subjected to quenching and tempering treatment: the forging blank 4 is first quenched, and then the quenched forging blank 4 is subjected to high-temperature tempering treatment. The quenching treatment can improve the hardness and strength of the forging blank 4, while the high-temperature tempering treatment can reduce the internal force inside the forging blank 4 material and improve the toughness and plasticity of the forging blank 4.

[0046] Specifically, the quenching treatment is to heat the forging blank 4 to 850-1000° C. and then put it into water for rapid cooling. It should be noted that heating the forging blank 4 to 850 to 1000° C. can ensure that the structure of the forging blank 4 is austenitized, which can improve the hardness and strength of the forging blank 4.

[0047] The high temperature tempering treatment is to reheat the quenched forging billet 4 to 520-640°C and keep it at this temperature for 2.5-3.5 hours.

[0048] In this embodiment, in step S3, the forging blank 4 is divided into a first cutting area 401 located in the middle of the forging blank 4 and surrounding the through hole 5, a second cutting area 403 located on the edges of the forging blank 4, and a reserved area between the first cutting area 401 and the second cutting area 403 according to the designed outer contour dimensions of the hydraulic support push rod lip plate.

[0049] The flame cutting sequence is: first, the first cutting area 401 is cut from the through hole 5 of the forging blank 4 to form a square hole 2 inside the forging blank 4, and then the second cutting area 403 is cut to form the outer shape of the forging blank 4. Since there are constraints around the square hole 2, the first cutting area 401 is cut first, and then the second cutting area 403 is cut, which can control the deformation of the forging blank 4 to the greatest extent, thereby ensuring the dimensional accuracy of the part cutting.

[0050] Combination Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, this embodiment also provides a processing device for a hydraulic support push rod lip plate for implementing the above processing method, including a workbench 7, a positioning tool 6 and a cutting robot device.

[0051] A positioning fixture 6 is placed on the workbench 7. The positioning fixture 6 includes a bottom plate 61. A plurality of legs 62 are provided on the upper surface of the bottom plate 61. The legs 62 are used to support the forging blank 4 obtained in step S2. The cutting robot device is used to flame cut the forging blank 4 placed on the positioning fixture 6. The positioning fixture 6 is provided to make the forging blank 4 suspended in the air, thereby preventing the workbench 7 from being burned when the cutting robot device flame cuts the forging blank 4.

[0052] Furthermore, the workbench 7 of this embodiment is provided with a plurality of positioning pin holes, and positioning columns 8 are inserted into the positioning pin holes. The positioning columns 8 are arranged around the positioning fixture 6 and abut against the side of the bottom plate 61 of the positioning fixture 6 to clamp the positioning fixture 6 on the workbench 7. The purpose of providing the positioning columns 8 is to limit the movement of the positioning fixture 6 in the horizontal direction and prevent the positioning fixture 6 from moving horizontally relative to the workbench 7. In addition, it should be noted that when the manipulator device flame cuts the forging blank 4, the forging blank 4 will not move relative to the positioning fixture 6 due to its own weight.

[0053] Furthermore, the plurality of legs 62 of the positioning tool 6 are located below the reserved area, and the top ends of the plurality of legs 62 abut against the lower surface of the reserved area. The purpose of such arrangement is to avoid flame cutting and prevent the legs 62 from being burned.

[0054] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for processing a hydraulic support push rod lip plate, characterized in that: The processing method comprises at least the following steps: S1. Forging: free forging the steel plate to form a block-shaped forging blank (4); S2, stamping: stamping a through hole (5) in the middle of the forging blank (4); S3, flame cutting: flame cutting is performed on the forging blank (4) according to the designed outer contour dimensions of the hydraulic support push rod lip plate. First, the middle square hole (2) is cut out from the through hole (5) with a gun, and then the outer shape of the forging blank (4) is cut to obtain the hydraulic support push rod lip plate.

2. The method for processing the push rod lip plate of the hydraulic support according to claim 1, characterized in that: The forged blank (4) obtained by forging in step S1 has rounded corners, and in step S2, the diameter of the punched through hole (5) is 60-70 mm.

3. The method for processing the push rod lip plate of the hydraulic support according to claim 1, characterized in that: After step S2, the upper and lower surfaces of the forging blank (4) are milled by machining so that the thickness of the forging blank (4) is consistent with the preset thickness. The preset thickness of the forging blank (4) is 80-100 mm.

4. The method for processing the push rod lip plate of the hydraulic support according to claim 3, characterized in that: Before step S3, the machined forging blank (4) is subjected to a quenching and tempering treatment: the forging blank (4) is first subjected to a quenching treatment, and then the quenched forging blank (4) is subjected to a high-temperature tempering treatment.

5. The method for processing the push rod lip plate of the hydraulic support according to claim 4, characterized in that: The quenching treatment is to heat the forging blank (4) to 850-1000°C and then put it into water for cooling; The high temperature tempering treatment is to reheat the quenched forging blank (4) to 520-640°C and keep the temperature for 2.5-3.5 hours.

6. The method for processing the push rod lip plate of the hydraulic support according to claim 1, characterized in that: In step S3, the forging blank (4) is divided into a first cutting area (401) located in the middle of the forging blank (4) and surrounding the through hole (5), a second cutting area (403) located around the edges of the forging blank (4), and a reserved area between the first cutting area (401) and the second cutting area (403) according to the outer contour dimensions of the designed hydraulic support push rod lip plate; The flame cutting sequence is: firstly, cutting the first cutting area (401) from the through hole (5) of the forging blank (4) with a gun to form a square hole (2) inside the forging blank (4), and then cutting the second cutting area (403) to form the outer shape of the forging blank (4).

7. A processing device for a hydraulic support push rod lip plate for implementing the processing method of claim 6, characterized in that: It comprises a workbench (7), a positioning tool (6) and a cutting manipulator device; A positioning tool (6) is placed on the workbench (7), the positioning tool (6) comprising a base plate (61), a plurality of legs (62) being provided on the upper surface of the base plate (61), the plurality of legs (62) being used to support the forging blank (4) obtained in step S2, and a cutting robot device being used to flame cut the forging blank (4) placed on the positioning tool (6).

8. The processing equipment for the push rod lip plate of the hydraulic support according to claim 6, characterized in that: A plurality of positioning pin holes are provided on the workbench (7), positioning columns (8) are inserted into the positioning pin holes, and the positioning columns (8) are arranged around the positioning fixture (6) and abut against the side surface of the bottom plate (61) of the positioning fixture (6) to clamp the positioning fixture (6) on the workbench (7).

9. The processing equipment for the push rod lip plate of the hydraulic support according to claim 6, characterized in that: The plurality of legs (62) of the positioning tool (6) are located below the reserved area, and the top ends of the plurality of legs (62) abut against the lower surface of the reserved area.

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