Machining tool for fan-shaped support and machining method of machining tool

Abstract

The invention provides a machining tool for a fan-shaped support. The machining tool comprises a first lower die, a second lower die, an upper die, a first rubber block, an ejector block and a second rubber block. The lower die I is mounted above the bottom plate; a circular through hole and an arc-shaped through hole matched with a part are formed in the lower die I; the rubber block is mounted in the circular through hole; the lower die II is mounted above the lower die I; a slotted hole matched with the part in shape is formed in the lower die II; the part is placed on the upper surface of the lower die II; a plurality of positioning pins are arranged on the upper surface of the lower die II and are used for positioning the position of the part; the top block is mounted above the rubber block; the upper die is installed on the die handle and located above the second lower die. An arc-shaped bulge matched with the arc-shaped through hole in the lower die I is arranged on the upper die; the shape of the upper die is matched with that of the slotted hole in the lower die II; the tool is simple in structure and convenient and fast to use, bending procedures of multiple parts of the part are achieved through one-time stamping bending, and the product percent of pass is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing molds, and particularly relates to a processing tool for a fan-shaped bracket and a processing method thereof. Background Art

[0002] Stamping is a pressure processing method that uses a stamping die to apply pressure to the material on a press at room temperature to cause it to undergo plastic deformation or separation to obtain parts of the desired shape and size. This processing method is usually called cold stamping.

[0003] There are the following difficulties in processing special-shaped parts: ‌Mold design and manufacturing is difficult: The shapes of special-shaped parts are complex, and mold design requires higher precision and creativity. A higher level of process is also required during the manufacturing process, which increases the difficulty of mold design and manufacturing; ‌Low material utilization rate: Due to the irregular shapes of special-shaped parts, waste is easily generated during the stamping process, resulting in a relatively low material utilization rate, which increases production costs; ‌Processing accuracy is difficult to guarantee: The stamping process is affected by a variety of factors such as mold accuracy, stamping equipment accuracy, and material properties, which may make it difficult to guarantee the size and shape accuracy of the parts; ‌Low production efficiency: The shapes of special-shaped parts are complex, and usually multiple sets of molds or multiple stampings are required to complete, which leads to relatively low production efficiency; ‌Difficulty in quality control: Due to the influence of various factors, quality problems are prone to occur during the stamping process of special-shaped parts, and strict quality control and inspection are required, which is difficult to control; ‌High technical requirements for operation: The stamping process of special-shaped parts requires high operating skills and experience, and requires a high technical level for the operating workers.

[0004] Generally, the processing of such special-shaped parts is carried out in steps, first bending at L, then bending the remaining parts around, and finally using wire cutting to determine the height of the bend. This method has many processing steps and is time-consuming. In addition, the bend height of the processed parts is unstable and the scrap rate is high. Summary of the invention

[0005] In view of the above problems, the object of the present invention is to provide a processing tool for a fan-shaped bracket which can be bent in one go and reduce the scrap rate.

[0006] The present invention is achieved through the following technical solutions: A processing tool for a fan-shaped bracket and a processing method thereof, comprising a bottom plate, a mold handle and a part; the mold handle is located above the bottom plate; a processing tool for a fan-shaped bracket and a processing method thereof also include a lower mold 1, a lower mold 2, an upper mold, a rubber block 1, a top block and a rubber block 2; the lower mold 1 is installed above the bottom plate; a circular through hole and an arc-shaped through hole matching the part are arranged on the lower mold 1; the rubber block is installed in the circular through hole; the lower mold 2 is installed above the lower mold 1; a slot matching the shape of the part is arranged on the lower mold 2; the part is placed on the upper surface of the lower mold 2; a plurality of positioning pins are arranged on the upper surface of the lower mold 2 for positioning the part The upper mold is mounted on the mold handle and is located above the lower mold. An arc-shaped protrusion matching the arc-shaped through hole on the lower mold is arranged on the upper mold. The outer shape of the upper mold matches the slotted hole on the lower mold. A circular hole is arranged on the upper mold. The rubber block 2 is mounted in the circular hole and extends out of the lower surface of the upper mold. The thickness of the rubber block 2 is greater than the thickness of the arc-shaped protrusion. A guide column for guiding is arranged on the lower mold. The arc-shaped protrusion corresponds to the number of bending parts required for the part. There are a plurality of circular through holes. There are a plurality of circular holes.

[0007] A method for processing a fan-shaped bracket processing tool comprises the following steps: a. Place the part on the upper surface of lower mold 2. Under the elastic action of rubber block 1, the upper surface of the top block in lower mold 1 supports the lower surface of the part, so that the part is stably placed on the upper surface of lower mold 2, and the positioning pins on lower mold 2 position the part; b. The press machine provides power to make the upper die move downward. The second rubber block first contacts and presses the upper surface of the part. Through the force transmission, the upper die continues to move downward. The arc-shaped protrusion and the second lower die cooperate with the shape of the upper die to form the part in a composite bending manner. c. The press drives the upper die part upward, and the ejector block in the lower die 1 ejects the part under the elastic action of the rubber block 1. At the same time, the rubber block 2 in the upper die also plays a role in unloading.

[0008] Beneficial effects of the present invention: The tooling structure of the present invention is simple, and the use is convenient and quick. The bending process of multiple parts of the parts can be realized through one-time stamping and bending, thereby improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention is further described in detail below with reference to the accompanying drawings.

[0010] Figure 1 It is a top view of the present invention.

[0011] Figure 2 yes Figure 1 AA section view.

[0012] Figure 3 It is a structural schematic diagram of the lower mold 1 described in the present invention.

[0013] Figure 4 It is a structural schematic diagram of the lower mold 2 described in the present invention.

[0014] Figure 5 It is a structural schematic diagram of the upper mold described in the present invention.

[0015] Figure 6 It is a side view of the upper mold described in the present invention.

[0016] Figure 7 It is a structural schematic diagram of the parts described in the present invention.

[0017] As shown in the figure: 1-bottom plate; 2-lower mold 1; 21-circular through hole; 22-rubber block 1; 23-arc-shaped through hole; 3-lower mold 2; 4-top block; 5-rubber block 2; 6-upper mold; 61-arc-shaped protrusion; 62-circular hole; 7-mold handle; 71-guide column; 8-parts. DETAILED DESCRIPTION

[0018] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] like Figure 7 The above is a schematic diagram of the structure of part 8 after processing in the present application; before processing, part 8 is a fan-shaped flat plate, the bending parts are the arc-shaped sharp corner at the left end of part 8 and the right end edge of part 8, and there are four arc-shaped grooves in the middle of part 8.

[0022] like Figure 1-Figure 6 The processing tooling and processing method for a fan-shaped bracket shown in the figure include: a base plate 1, a lower mold 2, a circular through hole 21, a rubber block 22, an arc-shaped through hole 23, a lower mold 3, a top block 4, a rubber block 5, an upper mold 6, an arc-shaped protrusion 61, a circular hole 62, a mold handle 7, and a guide column 71.

[0023] The lower die 2 is installed above the bottom plate 1; a circular through hole 21 and an arc-shaped through hole 23 matching the part 8 are provided on the lower die 2; the circular through holes 21 are multiple.

[0024] The rubber block 1 22 is installed in the circular through hole 21; the lower mold 2 3 is installed above the lower mold 1 2; a slot 31 matching the shape of the part 8 is provided on the lower mold 2 3; the part 8 is placed on the upper surface of the lower mold 2 3; a plurality of positioning pins are provided on the upper surface of the lower mold 2 3 for positioning the part 8; the lower mold 2 3 is provided with a guide column 71 for guiding.

[0025] The top block 4 is installed above the rubber block 22, and the upper surface of the top block 4 is in contact with the lower surface of the part 8; The upper mold 6 is installed on the mold handle 7 and is located above the lower mold 2 3; an arc-shaped protrusion 61 matching the arc-shaped through hole 23 on the lower mold 2 is provided on the upper mold 6; the shape of the upper mold 6 matches the slot 31 on the lower mold 2 3; in order to better position the part 8 and prevent the part 8 from sliding, a circular hole 62 is provided on the upper mold 6; the rubber block 2 5 is installed in the circular hole 62 and extends out of the lower surface of the upper mold 6; the thickness of the rubber block 2 5 is greater than the thickness of the arc-shaped protrusion 61; there are a plurality of circular holes 62; the arc-shaped protrusion 61 corresponds to the number of bending parts required for the part 8.

[0026] Working steps: During operation, under the elastic action of the rubber block 22, the top block 4 in the lower die 2 supports the lower surface of the part 8 with the upper surface of the top block 4, so that the part 8 is stably placed on the upper surface of the lower die 3, and the positioning pin on the lower die 3 positions the part 8, and then the upper die 6 moves downward, and the rubber block 25 first contacts and presses the part 8, and through the force transmission, the upper die 6 part continues to move downward, and the part 8 is compound bent and formed, and then the press drives the upper die 6 part upward, and the top block 4 in the lower die 2 pushes the part 8 out under the elastic action of the rubber block 22, and at this time, the rubber block 25 in the upper die 6 also plays a role in unloading.

[0027] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A processing tool for a fan-shaped bracket, comprising a base plate (1), a die handle (7) and a part (8); the die handle (7) is located above the base plate (1); characterized in that The invention also comprises a lower mold 1 (2), a lower mold 2 (3), an upper mold (6), a rubber block 1 (22), a top block (4) and a rubber block 2 (5); the lower mold 1 (2) is mounted above the bottom plate (1); a circular through hole (21) and an arc-shaped through hole (23) matching the part (8) are arranged on the lower mold 1 (2); the rubber block 1 (22) is installed in the circular through hole (21); the lower mold 2 (3) is mounted above the lower mold 1 (2); a slotted hole (31) matching the shape of the part (8) is arranged on the lower mold 2 (3); the part (8) The upper surface of the lower mold (2) (3) is placed on the upper surface of the lower mold (2); a plurality of positioning pins are arranged on the upper surface of the lower mold (3) for positioning the part (8); the top block (4) is installed above the rubber block (22), and the upper surface of the top block (4) contacts the lower surface of the part (8); the upper mold (6) is installed on the mold handle (7) and is located above the lower mold (2); an arc-shaped protrusion (61) matching the arc-shaped through hole (23) on the lower mold (2) is arranged on the upper mold (6); the outer shape of the upper mold (6) matches the slot hole (31) on the lower mold (3).

2. A processing tool for a fan-shaped bracket according to claim 1, characterized in that : It also includes a second rubber block (5); a circular hole (62) is provided on the upper mold (6); the second rubber block (5) is installed in the circular hole (62) and extends out of the lower surface of the upper mold (6); the thickness of the second rubber block (5) is greater than the thickness of the arc-shaped protrusion (61).

3. A processing tool for a fan-shaped bracket according to claim 1, characterized in that The lower mold 2 (3) is provided with a guide column (71) for guiding.

4. A processing tool for a fan-shaped bracket according to claim 1, characterized in that The number of the arc-shaped protrusions (61) corresponds to the number of bending locations required for the part (8).

5. The processing tool for a fan-shaped bracket according to claim 1 is characterized in that : There are a plurality of circular through holes (21).

6. The processing tool for a fan-shaped bracket according to claim 2, characterized in that : There are a plurality of circular holes (62).

7. The method for processing a fan-shaped bracket according to claim 1, characterized in that: The following steps are involved: a. Place the part (8) on the upper surface of the lower mold (3). Under the elastic action of the rubber block (22), the upper surface of the top block (4) in the lower mold (2) supports the lower surface of the part (8), so that the part (8) is stably placed on the upper surface of the lower mold (3), and the positioning pin on the lower mold (3) positions the part (8); b. The press machine provides power to move the upper die (6) downward, and the second rubber block (5) first contacts and presses the upper surface of the part (8). Through the force transmission, the upper die (6) continues to move downward, and the arc-shaped protrusion (61) and the second lower die (3) cooperate with the shape of the upper die (6) to form a composite bending of the part (8); c. The press machine drives the upper die (6) to partially move upward, and the ejector block (4) in the lower die (2) ejects the part (8) under the elastic action of the rubber block (22). At the same time, the rubber block (5) in the upper die (6) also plays a role in unloading.

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