Center hole finish machining device

Abstract

The invention relates to a center hole finish machining device which comprises a stamping assembly, a machining assembly and a machining assembly, the stamping assembly comprises a pressing head, a working table, an upper die base and a lower die base, the upper die base is fixed to the pressing head and vertically moves along with the pressing head, and the lower die base is fixed to the working table; the material supporting assembly comprises a supporting part, a rotary male die and a positioning chuck, the supporting part is arranged on the working table in a telescopic mode, and the rotary male die is rotatably arranged on the supporting part and used for containing a part to be machined; the rotating assembly comprises a driving unit and a rotating shaft, the driving unit is installed on the upper die base and used for driving the rotating shaft to rotate, and the positioning chuck is fixed to the bottom end of the rotating shaft and used for clamping a part to be machined together with the rotating male die; and the turning assembly comprises a tool turret and a turning tool installed on the tool turret, the tool turret is fixed to the working table top, and the turning tool is used for turning the part to be machined. The center hole finish machining device has the advantages of being high in precision, high in production efficiency, good in product consistency and the like.

Description

Technical Field

[0001] The invention relates to the technical field of stamping manufacturing, and in particular to a center hole finishing device. Background Art

[0002] At present, for the finishing of the center holes of rotating parts, mechanical processing or punching holes are usually used. Mechanical processing is a traditional part processing and production method, which is characterized by high processing accuracy, but lower efficiency than punching holes. Although punching holes have the advantages of high production efficiency and good product consistency, their dimensional accuracy is lower than that of mechanical processing production, and there is a problem of uneven hole surface, which affects subsequent assembly and use.

[0003] Therefore, there is an urgent need for a new center hole finishing device that can combine the advantages of high precision, high production efficiency and good product consistency. Summary of the invention

[0004] The object of the present invention is to provide a center hole finishing device which has the advantages of high precision, high production efficiency and good product consistency.

[0005] In order to achieve the above object, the present invention provides a center hole finishing device, comprising:

[0006] A stamping assembly, comprising a pressing head, a work surface, an upper die base and a lower die base, wherein the upper die base is fixed to the pressing head and moves vertically with the pressing head, and the lower die base is fixed to the work surface;

[0007] A material support assembly, comprising a supporting component, a rotating punch and a positioning chuck, wherein the supporting component is telescopically arranged on the worktable, and the rotating punch is rotatably arranged on the supporting component and is used to place the parts to be processed;

[0008] A rotating assembly, comprising a driving unit and a rotating shaft, wherein the rotating shaft is rotatably arranged on the upper die base in a vertical direction, the driving unit is mounted on the upper die base and is used to drive the rotating shaft to rotate, and the positioning chuck is fixed at the bottom end of the rotating shaft and is used to clamp the part to be processed together with the rotating punch;

[0009] A turning assembly, comprising a turret and a turning tool mounted on the turret, wherein the turret is fixed on the worktable, and the turning tool is used to turn the part to be processed;

[0010] When the pressure head moves vertically downward, the supporting assembly can switch between a loading and unloading state and a clamping state: in the loading and unloading state, there is a distance between the positioning chuck and the rotating punch; in the clamping state, the positioning chuck and the rotating punch jointly clamp the part to be processed.

[0011] Optionally, a receiving groove is provided on the lower mold base, and the support assembly further includes an elastic element arranged in the receiving groove, the top end of the elastic element is connected to the bottom end of the supporting component, and the bottom end of the elastic element is connected to the bottom wall of the receiving groove.

[0012] Optionally, the supporting component includes a supporting plate, a base and a plurality of supporting rods, the supporting plate is arranged on the work surface through the elastic element, the bottom end of the supporting rod is connected to the supporting plate, and the top end is connected to the base, and the rotating punch is rotatably arranged on the base.

[0013] Optionally, the elastic element is a nitrogen spring.

[0014] Optionally, the supporting plate is annular, and the supporting rods are evenly distributed along the annular direction of the supporting plate.

[0015] Optionally, the rotating punch is rotatably mounted on the base via a plurality of first bearings.

[0016] Optionally, the rotating shaft is rotatably mounted on the upper mold base via a plurality of second bearings.

[0017] Optionally, the output shaft of the driving motor and the rotating shaft are driven by a belt.

[0018] Optionally, a through hole is provided on the part to be processed, and the center hole finishing device also includes a positioning assembly, the positioning assembly includes a pressure rod, a positioning sleeve and a positioning shaft, the pressure rod is fixed on the upper mold base and vertically penetrates the rotating shaft, the positioning sleeve is arranged at the bottom end of the pressure rod, and the positioning shaft is installed on the turret, and when the pressure head moves vertically downward, the positioning shaft can vertically penetrate the through hole and be inserted into the positioning sleeve.

[0019] Optionally, the center hole finishing device also includes a guide assembly, which includes a plurality of guide rods arranged on the upper die base and a plurality of guide holes opened on the lower die base, and the guide rods correspond to the guide holes one by one and can be movably inserted into the corresponding guide holes.

[0020] The center hole finishing device provided by the present invention has at least one of the following beneficial effects:

[0021] 1) The part to be processed is driven downward by the pressure head, and the rotating assembly is used to drive the part to be processed to rotate, so that the part to be processed performs a center hole turning action during the downward process, thereby being able to process a center hole with high quality accuracy while ensuring high production efficiency and having good product consistency;

[0022] 2) By setting the positioning assembly, the pressure rod is connected to the positioning shaft on the lower turret through the positioning sleeve, thereby increasing the rigidity of the overall mechanism, ensuring the accuracy during the turning process, and reducing vibration;

[0023] 3) By providing the guide assembly, the relative movement between the upper die base and the lower die base and the vertical movement of related components can be positioned and guided, thereby improving the turning accuracy of the center hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Those skilled in the art should understand that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0025] Figure 1 A schematic diagram of the structure of a center hole finishing device provided by an embodiment of the present invention in a loading and unloading state;

[0026] Figure 2 A schematic structural diagram of a center hole finishing device in a clamping state provided by an embodiment of the present invention.

[0027] in:

[0028] 110-pressing head; 120-working table; 130-upper die seat; 140-lower die seat; 210-supporting component; 211-supporting plate; 212-base; 213-supporting rod; 220-rotating punch; 230-positioning chuck; 240-elastic element; 310-driving unit; 320-rotating shaft; 330-pulley; 340-cover plate; 400-parts to be processed; 510-turret; 520-turning tool; 610-first bearing; 620-second bearing; 710-pressing rod; 720-positioning sleeve; 730-positioning shaft; 810-guide rod; 820-guide hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content 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. Any modification of the structure, change in the proportional relationship or adjustment of the size, under the same or similar conditions as the effects that can be produced by the present invention and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0030] As used in the present invention, the singular forms "one", "an", and "the" include plural objects, unless the content clearly indicates otherwise. As used in the present invention, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise. As used in the present invention, the term "several" is generally used in a sense that includes "at least one", unless the content clearly indicates otherwise. As used in the present invention, the term "at least two" is generally used in a sense that includes "two or more", unless the content clearly indicates otherwise. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of the features.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" 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.

[0032] Please refer to Figure 1-Figure 2 , this embodiment provides a center hole finishing device, comprising:

[0033] The stamping assembly includes a pressing head 110, a work surface 120, an upper die base 130 and a lower die base 140. The upper die base 130 is fixed on the pressing head 110 and moves vertically with the pressing head 110. The lower die base 140 is fixed on the work surface 120.

[0034] The material support assembly includes a support component 210, a rotating punch 220 and a positioning chuck 230. The support component 210 is telescopically arranged on the work table 120, and the rotating punch 220 is rotatably arranged on the support component 210 and is used to place the part 400 to be processed;

[0035] The rotating assembly includes a driving unit 310 and a rotating shaft 320. The rotating shaft 320 is rotatably arranged on the upper die base 130 in the vertical direction. The driving unit 310 is installed on the upper die base 130 and is used to drive the rotating shaft 320 to rotate. The positioning chuck 230 is fixed to the bottom end of the rotating shaft 320 and is used to clamp the part 400 to be processed together with the rotating punch 220.

[0036] A turning assembly, including a turret 510 and a turning tool 520 mounted on the turret 510 , wherein the turret 510 is fixed on the worktable 120 , and the turning tool 520 is used for turning the workpiece 400 to be processed;

[0037] When the ram 110 moves vertically downward, the support assembly can switch between a loading and unloading state and a clamping state: in the loading and unloading state, there is a distance between the positioning chuck 230 and the rotating punch 220; in the clamping state, the positioning chuck 230 and the rotating punch 220 jointly clamp the part 400 to be processed.

[0038] The part to be processed 400 is driven downward by the pressure head 110, and the rotating component is used to rotate the part to be processed 400, so that the part to be processed 400 is turned to have a center hole during the downward process, thereby ensuring a high production efficiency and being able to process a center hole with high quality accuracy and good product consistency.

[0039] Specifically, in the loading and unloading state, there is a distance between the upper die base 130 and the lower die base 140, that is, the mold is open, so that the part to be added can be placed on the rotating punch 220. When the center hole of the part to be processed 400 needs to be fine-machined, the pressure head 110 is driven downward and the upper die base 130 is driven downward. During the whole process, the lower die base 140 is fixed.

[0040] In this embodiment, the support component 210 is telescopically arranged on the work surface 120. The specific implementation method is, for example, to open a receiving groove on the lower mold base 140, and the support assembly also includes an elastic element 240 arranged in the receiving groove, the top end of the elastic element 240 is connected to the bottom end of the support component 210, and the bottom end of the elastic element 240 is connected to the bottom wall of the receiving groove. When the support assembly is in the loading and unloading state, the elastic element 240 naturally stretches, which can also be understood as the elastic element 240 only bearing the weight of the support component 210, the rotating punch 220 and the part to be processed 400 thereon, and may be slightly compressed. When the ram 110 moves downward and drives the upper die seat 130 and the rotating assembly downward, the positioning chuck 230 contacts the part to be processed 400 and clamps the part to be processed 400 together with the rotating punch 220. As the ram 110 continues to move downward, the part to be processed 400 moves downward under the joint clamping of the positioning chuck 230 and the rotating punch 220, and the support component 210 and the rotating punch 220 follow the downward movement, and the elastic element 240 is compressed. After the center hole of the part to be processed 400 is processed, as the ram 110 moves upward and drives the upper die seat 130 upward to open the mold, the support component 210 can be reset under the action of the elastic element 240, and the entire support assembly is restored to the loading and unloading state, so as to facilitate the processing of the next part to be processed.

[0041] Furthermore, the support component 210 includes a support plate 211, a base 212 and a plurality of support rods 213. The support plate 211 is disposed on the work surface 120 through an elastic element 240. The bottom end of the support rod 213 is connected to the support plate 211, and the top end is connected to the base 212. The rotary punch 220 is rotatably disposed on the base 212. In this embodiment, when the support plate 211 is in contact with the work surface 120 or before the contact, the turning assembly can complete the turning process of the center hole of the part 400 to be processed. It can also be understood that as the pressure head 110 continues to descend, the part 400 to be processed descends under the joint clamping of the positioning chuck 230 and the rotary punch 220, and the support component 210 and the rotary punch 220 follow the downward movement, and the elastic element 240 is continuously compressed. At the same time, the driving unit 310 drives the rotating shaft 320 to rotate and drives the positioning chuck 230 to rotate, thereby driving the part 400 to be processed and the rotary punch 220. The rotary punch 220 rotates, so the part to be processed 400 performs downward and rotational movements at the same time. When the part to be processed 400 descends until it contacts the turning tool 520, it performs turning. When the part to be processed 400 descends to the bottom dead point, the turning is completed. The position of the bottom dead point is, for example, the point when the support plate 211 contacts the work table 120, or the elastic element 240 is compressed to the limit, or the bottom dead point is set separately to limit the downward movement of the support plate 211. The present invention does not limit this. In this process, the supporting component 210 only performs downward movement, and does not rotate.

[0042] In this embodiment, the elastic element 240 includes but is not limited to a nitrogen spring.

[0043] In this embodiment, the supporting plate 211 is annular, and the supporting rods 213 are evenly distributed along the annular direction of the supporting plate 211 . The present invention does not limit the number of the supporting rods 213 .

[0044] Furthermore, the rotating punch 220 is rotatably mounted on the base 212 through a plurality of first bearings 610. In this embodiment, there are two contact points between the rotating punch 220 and the base 212, so the number of the first bearings 610 is two, wherein the bearing located outside the rotating punch 220 is a ball bearing, and the bearing located below the rotating punch 220 is a thrust bearing.

[0045] Please continue to refer to Figure 1 and Figure 2 The rotating assembly includes a driving unit 310, a rotating shaft 320 and a positioning chuck 230. The driving unit 310 includes but is not limited to a driving motor, which can drive the rotating shaft 320 to rotate by belt transmission or the like. The positioning chuck 230 is fixed to the bottom end of the rotating shaft 320 and rotates with the rotating shaft 320. In this embodiment, a pulley 330 is sleeved on the outer side of the rotating shaft 320, and the pulley 330 and the output shaft of the driving motor are driven by a belt.

[0046] The rotating shaft 320 is rotatably mounted on the upper die seat 130 through a plurality of second bearings 620. In this embodiment, there are two contact points between the rotating shaft 320 and the upper die seat 130, so the number of second bearings 620 is two and both are ball bearings. In addition, to ensure the rotation accuracy of the rotating shaft 320, its bottom end is also rotatably connected to a cover plate 340 through a ball bearing, and the cover plate 340 is connected to the upper die seat 130.

[0047] Preferably, a through hole is provided on the part to be processed, and the center hole finishing device further comprises a positioning assembly, which comprises a pressure rod 710, a positioning sleeve 720 and a positioning shaft 730. The pressure rod 710 is fixed on the upper die seat 130 and vertically penetrates the rotating shaft 320. The positioning sleeve 720 is arranged at the bottom end of the pressure rod 710, and the positioning shaft 730 is installed on the turret 510. When the pressure head moves vertically downward, the positioning shaft 730 can vertically penetrate the through hole and be inserted into the positioning sleeve 720. By setting the positioning assembly, the pressure rod 710 is connected to the positioning shaft 730 on the lower turret 510 through the positioning sleeve 720, thereby increasing the rigidity of the overall mechanism, ensuring the accuracy during the turning process, and reducing vibration.

[0048] Preferably, the center hole finishing device further includes a guide assembly, which includes a plurality of guide rods 810 provided on the upper die base 130 and a plurality of guide holes 820 provided on the lower die base 140, wherein the guide rods 810 correspond to the guide holes 820 one by one and can be movably inserted into the corresponding guide holes 820. In this embodiment, the guide assembly is mainly used to position and guide the relative movement between the upper die base 130 and the lower die base 140 and the vertical movement of related components, thereby improving the turning accuracy of the center hole.

[0049] Based on this, an embodiment of the present invention also provides a processing method of the center hole finishing device as described above, which specifically includes the following steps:

[0050] S1, in the initial state, the support assembly is in a loading and unloading state, at which time the part 400 to be processed can be placed on the rotating punch 220 by a manipulator;

[0051] S2, driving the ram 110 downward and driving the upper die holder 130 and the rotating assembly downward, at the same time, driving the rotating shaft 320 to rotate and driving the positioning chuck 230 to rotate through the driving unit 310, the positioning chuck 230 moves downward to contact the part 400 to be processed and clamps the part 400 to be processed together with the rotating punch 220, as the ram 110 continues to move downward, the part 400 to be processed moves downward and rotates under the joint clamping of the positioning chuck 230 and the rotating punch 220;

[0052] S3, when the clamped part 400 to be processed contacts the turning tool 520 on the turret 510, the turning process starts, and the press continues to move downward until the bottom dead point;

[0053] S4. After the center hole of the part 400 to be processed is processed, the pressure head 110 is driven upward to drive the upper mold base 130 to open the mold. The support component 210 can be reset under the action of the elastic element 240, and the entire material support assembly is restored to the loading and unloading state. At this time, the part 400 to be processed can be smoothly removed by the robot arm to facilitate the processing of the next component to be processed.

[0054] In summary, an embodiment of the present invention provides a center hole finishing device, which drives the part to be processed 400 downward through the pressure head 110, and drives the part to be processed 400 to rotate by the rotating component, so that the part to be processed 400 performs the action of turning the center hole during the downward process, thereby ensuring a high production efficiency. The center hole with high quality accuracy can be processed and has good product consistency.

[0055] In addition, it should be recognized that although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of protection of the technical solution of the present invention.

Claims

1. A center hole finishing device, characterized in that: include: A stamping assembly, comprising a pressing head, a work surface, an upper die base and a lower die base, wherein the upper die base is fixed to the pressing head and moves vertically with the pressing head, and the lower die base is fixed to the work surface; A material support assembly, comprising a supporting component, a rotating punch and a positioning chuck, wherein the supporting component is telescopically arranged on the worktable, and the rotating punch is rotatably arranged on the supporting component and is used to place the parts to be processed; A rotating assembly, comprising a driving unit and a rotating shaft, wherein the rotating shaft is rotatably arranged on the upper die base in a vertical direction, the driving unit is mounted on the upper die base and is used to drive the rotating shaft to rotate, and the positioning chuck is fixed at the bottom end of the rotating shaft and is used to clamp the part to be processed together with the rotating punch; A turning assembly, comprising a turret and a turning tool mounted on the turret, wherein the turret is fixed on the worktable, and the turning tool is used to turn the part to be processed; When the pressure head moves vertically downward, the supporting assembly can switch between a loading and unloading state and a clamping state: in the loading and unloading state, there is a distance between the positioning chuck and the rotating punch; in the clamping state, the positioning chuck and the rotating punch jointly clamp the part to be processed.

2. The center hole finishing device according to claim 1, characterized in that: The lower die base is provided with a receiving groove, and the supporting assembly further comprises an elastic element arranged in the receiving groove, the top end of the elastic element is connected to the bottom end of the supporting component, and the bottom end of the elastic element is connected to the bottom wall of the receiving groove.

3. The center hole finishing device according to claim 2, characterized in that: The supporting component includes a supporting plate, a base and a plurality of supporting rods. The supporting plate is arranged on the work surface through the elastic element. The bottom end of the supporting rod is connected to the supporting plate, and the top end is connected to the base. The rotating punch is rotatably arranged on the base.

4. The center hole finishing device according to claim 3, characterized in that: The elastic element is a nitrogen spring.

5. The center hole finishing device according to claim 3, characterized in that: The supporting plate is annular, and the supporting rods are evenly distributed along the annular direction of the supporting plate.

6. The center hole finishing device according to claim 3, characterized in that: The rotating punch is rotatably mounted on the base through a plurality of first bearings.

7. The center hole finishing device according to claim 1, characterized in that: The rotating shaft is rotatably mounted on the upper die seat via a plurality of second bearings.

8. The center hole finishing device according to claim 1, characterized in that: The output shaft of the driving motor and the rotating shaft are driven by a belt.

9. The center hole finishing device according to claim 1, characterized in that: A through hole is provided on the part to be processed, and the center hole finishing device also includes a positioning component, which includes a pressure rod, a positioning sleeve and a positioning shaft. The pressure rod is fixed on the upper mold base and vertically penetrates the rotating shaft. The positioning sleeve is arranged at the bottom end of the pressure rod, and the positioning shaft is installed on the turret. When the pressure head moves vertically downward, the positioning shaft can vertically penetrate the through hole and be inserted into the positioning sleeve.

10. The center hole finishing device according to claim 1, characterized in that: The center hole finishing device also includes a guide assembly, which includes a plurality of guide rods arranged on the upper die base and a plurality of guide holes opened on the lower die base. The guide rods correspond to the guide holes one by one and can be movably inserted into the corresponding guide holes.

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