Blanking clamping jig for milling appearance surface, machining equipment and machining method

Abstract

The invention relates to a milling appearance surface blanking clamping jig, machining equipment and a machining method. The technical problem that an existing small product is difficult to position is solved. The appearance surface milling blanking clamping jig comprises a machine table, the upper end of the machine table is provided with a product positioning platform, the middle of the product positioning platform is provided with a product positioning structure used for positioning a product, and the middle of the product positioning structure is provided with a through receding hole; the product limiting assemblies are arranged on the circumferential outer side of the product positioning platform at intervals and alternately act on the circumferential edge of the product; the auxiliary side pushing assembly is transversely arranged on the product positioning platform in a penetrating mode and can act on the side wall of the product; the parallel clamp assembly is arranged on the machine table, and one end of the parallel clamp assembly can penetrate through the receding hole and reversely abut against the side wall of the product. The positioning difficulty of a small product is reduced, the accuracy and stability of product positioning are improved, and the problem that the edge of the product is damaged and broken due to slotted hole forming is solved.

Description

Technical Field

[0001] This invention belongs to the field of fixture technology, and relates to a blanking fixture for milling outer surfaces, processing equipment and processing method. Background Technology

[0002] For example, Chinese patent literature discloses a convenient clamping fixture and processing equipment [202221536251.8], which includes a mating mother fixture and a daughter fixture. The daughter fixture is provided with at least one clamping station. Several fixing blocks are provided on one side of the clamping station, and several push blocks are provided on the other side of the clamping station. The push blocks are pushed and connected by the clamping components. The mother fixture is provided with a fixing station. Clamping devices are symmetrically arranged on both sides of the fixing station. The daughter fixture is placed on the fixing station. A positioning mechanism is provided between the bottom of the daughter fixture and the mother fixture. A pressing and fixing structure is provided between the end of the daughter fixture and the clamping device.

[0003] The drawbacks of the above technical solution are: for the surface processing of non-standard small parts with complex surfaces, the positioning of non-standard small parts is difficult, and it is impossible to accurately position the non-standard small parts. Moreover, the positioning structure of non-standard small parts is prone to obscuring too much of the surface, which can cause the positioning structure and the drilling and milling structure to interfere with each other, resulting in low processing efficiency and clamping damage. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a blanking fixture, processing equipment, and processing method for milling outer surfaces.

[0005] The objective of this invention can be achieved through the following technical solutions: The blanking fixture for milling outer surfaces includes: The machine has a product positioning platform at the top, a product positioning structure for positioning products in the middle of the product positioning platform, and a through clearance hole in the middle of the product positioning structure. Product limiting components are spaced apart on the outer periphery of the product positioning platform and act alternately on the periphery edge of the product; An auxiliary side-push component is laterally installed on the product positioning platform and can act on the side wall of the product; A parallel clamp assembly is mounted on the machine base and has a clearance hole at one end, which abuts against the side wall of the product in the opposite direction.

[0006] Furthermore, the product positioning structure includes a product positioning groove recessed along the length of the product positioning platform, and two arc-shaped surfaces that are symmetrically inclined and recessed along the width direction on both sides of the product positioning groove. A protruding limiting ridge is provided on the side of the arc-shaped surface near the clearance hole, and an edge limiting ridge is also provided on the product positioning platform.

[0007] Furthermore, the clearance hole is located in the middle of the product positioning groove and between the two limiting protrusions, and there is a gap between the clearance hole and the outer wall of the product.

[0008] Furthermore, the product limiting component includes an end pressing structure disposed at the end of the product positioning platform, a middle pressing structure disposed in the middle of the product positioning platform, and a first pressing structure and a second pressing structure disposed on both sides of the product positioning platform, which are located on both sides of the middle pressing structure and alternately press down on the product.

[0009] Furthermore, the working surface of the central pressing structure is located at the upper end of the middle of the product and the upper end of the product positioning platform, and the upper end of the middle of the product and the upper end of the product positioning platform are flush.

[0010] Furthermore, the product positioning platform is provided with a clearance notch that connects to the product positioning slot.

[0011] Furthermore, the auxiliary side push assembly includes a side push driver disposed on the machine base, a push block that is laterally inserted into the product positioning platform is provided at the output end of the side push driver, and an abutment block is provided at the end of the push block away from the side push driver, one end of which extends into the clearance notch and abuts against the side wall of the product.

[0012] Furthermore, the parallel clamp assembly includes a clamping driver disposed at the bottom of the machine base. The clamping driver is connected to a plurality of drive rods that pass through the machine base and clearance holes in sequence. Each drive rod is provided with an abutment clamp that can abut against the side wall of the product. The abutment clamps on adjacent drive rods are staggered and abut in opposite directions.

[0013] The present invention also provides a processing device having a blanking fixture for milling outer surfaces as described above.

[0014] The present invention also provides a processing method for a processing device, the steps of which are as follows: S1, Place the individual product to be processed into the product positioning slot; S2, the product limiting component acts on the upper edge of the product, the parallel clamping component acts on the inner side wall of the bottom of the product, the auxiliary side push component acts on the outer side wall of the product, and initiates drilling and milling of the product's appearance surface. S3, the product limiting components alternately act on the upper edge of the product and initiate the blanking process for the product; S4, obtain two finished products processed in step S3, including the auxiliary side-push component, The parallel clamp assembly and the product limiting assembly return to their original positions in sequence, and the finished product is then removed.

[0015] Compared with existing technologies, the blanking fixture, machining equipment, and machining method for milling outer surfaces have the following advantages: 1. The positioning structure design adopts a multi-unit product combination, which increases the positioning surface of the product to be processed. By utilizing the mutual support between the structures, the overall force is balanced, eliminating the need for clamping and fixing multiple complex surfaces of small parts, reducing the difficulty of positioning small products, improving the accuracy and stability of product positioning, and avoiding damage problems during positioning, clamping and processing. 2. The auxiliary side push component and the parallel clamping component are used to achieve auxiliary clamping on the inner and outer walls of the product to be processed. Combined with the contour positioning of the product positioning platform, the positioning accuracy of the product is improved, and the loosening and displacement of the product is avoided after blanking. 3. By processing the outer surface first and then blanking, the product can be enlarged as a whole to increase the volume of the processing unit. This provides a balanced force distribution for processing irregular small parts, avoids the problem of product edge damage and breakage caused by slotting holes, and reduces the difficulty of product unit positioning and improves positioning accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a blanking fixture for milling outer surfaces provided by the present invention.

[0017] Figure 2 A schematic diagram of the product positioning platform structure provided by the present invention.

[0018] Figure 3 A cross-sectional schematic diagram of the product positioning platform provided by the present invention.

[0019] Figure 4 A schematic diagram of the product limiting component structure provided by the present invention.

[0020] Figure 5 A schematic diagram of the auxiliary side-pushing component structure provided by the present invention.

[0021] Figure 6 This is a cross-sectional schematic diagram of the auxiliary side thrust assembly provided by the present invention.

[0022] Figure 7 Provided by the present invention Figure 6 A magnified schematic diagram of a portion of the structure.

[0023] Figure 8 This is a schematic diagram of the parallel clamp assembly structure provided by the present invention.

[0024] Figure 9 This is a cross-sectional schematic diagram of the parallel clamp assembly provided by the present invention.

[0025] Figure 10 This is a schematic diagram of the finished structure of the small product provided by the present invention.

[0026] In the diagram, 10 is the machine base; 20 is the product positioning platform; 21 is the clearance hole; 22 is the clearance notch; 30 is the product positioning structure; 31 is the product positioning groove; 32 is the arc-shaped surface; 33 is the limiting protrusion; 34 is the edge limiting protrusion; 35 is the strip-shaped clearance groove; 36 is the contact surface; 40 is the product limiting component; 41 is the end pressing structure; 411 is the end pressing block; 412 is the rotating shaft; 413 is the rotating motor; 42 is the middle pressing structure; 421 is the vertical cylinder; 4 22. Horizontal cylinder; 423. Middle pressing block; 43. First pressing structure; 431. Planar rotary cylinder drive; 432. First pressing block; 44. Second pressing structure; 441. Second pressing block; 50. Auxiliary side push assembly; 51. Side push driver; 52. Push block; 53. Abutment block; 54. Arc-shaped rolled edge; 55. Strip-shaped limiting hole; 56. Stroke limiting post; 60. Parallel clamp assembly; 61. Clamping driver; 62. Drive rod; 63. Abutment clamp. Detailed Implementation

[0027] Example 1, please refer to Figure 1 This is a schematic diagram of a milling surface blanking fixture provided by the present invention. The milling surface blanking fixture includes: a machine base 10, a product positioning platform 20, a product limiting component 40, an auxiliary side pushing component 50, a parallel clamping component 60, etc., mounted on the machine base 10. It can be imagined that this milling surface blanking fixture also includes other functional components and specific structures, such as electrical connection components, control components, and installation structures, which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0028] Please see Figure 8 , Figure 10 In this embodiment, the product to be processed can be processed into at least two non-standard small finished products. The outer walls on both sides of the product to be processed are provided with arc-shaped structures. In this embodiment, the product to be processed has a long strip structure and is symmetrically arranged. It is connected by the unprocessed material in the middle.

[0029] In this embodiment, the machine base 10 is the mounting carrier, which is usually the flat surface of the equipment platform.

[0030] Please see Figure 2 , Figure 3In this embodiment, a product positioning platform 20 is provided at the upper end, which is designed according to the shape of the product and tends to be a long strip structure. It raises the positioning height between the product and the machine base 10, which facilitates the setting of the product positioning structure 30 and its drive pipeline components. The product positioning platform 20 has a product positioning structure 30 in the middle for positioning the product. The product positioning structure 30 tends to be a contour positioning method and is used to position the product to be processed. Specifically, the product positioning structure 30 includes a product positioning groove 31 that is recessed along the length of the product positioning platform 20. The product positioning groove 31 is used for partial positioning and embedding of the product to be processed, while a portion still fits against the upper end of the product positioning platform 20. The upper end of the product to be processed has a flat surface structure, which is beneficial for subsequent surface drilling and milling. On both sides of the product positioning groove 31, there are symmetrically inclined and recessed arc-shaped surfaces 32 along the width direction. The arc-shaped surfaces 32 are used to fit the arc surfaces on both sides of the product to be processed to ensure the stability of the positioning and embedding. On the side of the arc-shaped surface 32 near the relief hole 21, there is a protruding limiting ridge 33. The limiting ridge 33 abuts against the end of the arc surface of the product to be processed to prevent the product to be processed from rotating.

[0031] Optimized design: The curved surface 32 has a recessed strip-shaped clearance groove 35 near the limiting protrusion, providing sufficient material removal clearance and preventing the corner formed at the curved end from forming a large area of ​​contact that would hinder smooth material removal. The limiting protrusion 33 also has a contact surface 36 that fits against the end of the curved surface, improving the positioning accuracy of the product to be processed.

[0032] In addition, an edge limiting protrusion 34 is provided on the product positioning platform 20. The edge limiting protrusion 34 is provided on the upper end face of the product positioning platform 20 and is used to limit the axial movement of the product to be processed along the product positioning groove 31.

[0033] In this embodiment, a through clearance hole 21 is provided in the middle of the product positioning groove 31 and is located between two limiting protrusions 33. There is a gap between the clearance hole 21 and the outer wall of the product to be processed, so that it does not directly contact the product to be processed. This leaves space to facilitate the outflow of waste material from subsequent blanking processing, as well as the outflow and insertion of internal positioning support during processing.

[0034] The positioning structure design adopts a multi-unit product combination, which increases the positioning surface of the product to be processed. By utilizing the mutual support between the structures, the overall force is balanced, eliminating the need for clamping and fixing multiple complex surfaces of small parts, reducing the difficulty of positioning small products, improving the accuracy and stability of product positioning, and avoiding damage problems during positioning, clamping, and processing.

[0035] Please see Figure 4 In this embodiment, the product limiting components 40 are spaced apart on the outer circumferential side of the product positioning platform 20 and alternately act on the circumferential edge of the product for fixing the upper end of the product. Specifically, The product limiting component 40 includes an end pressing structure 41 disposed at the end of the product positioning platform 20. The end pressing structure 41 includes an end pressing block 411 hinged to the product positioning platform 20. The end pressing block 411 has a U-shaped structure and is rotatably mounted via a rotating shaft 412 with an external gear. The rotating shaft 412 is connected to a rotating motor 413 for power transmission. The end pressing structure 41 is driven by rotation in the vertical direction.

[0036] In this embodiment, a central pressing structure 42 is provided in the middle of the product positioning platform 20. The middle section includes a two-stage displacement structure, comprising a horizontal cylinder 422 driven horizontally, a vertical cylinder 421 located at the output end of the horizontal cylinder 422, and a central pressing block 423 located at the output end of the vertical cylinder 421. After the surface of the product to be processed is milled, the central pressing block 423 acts on the newly slotted structure in the middle, forming a central fulcrum positioning. The working surface of the central pressing structure 42 is located at the upper end of the middle of the product and the upper end of the product positioning platform 20, with the upper end of the middle of the product flush with the upper end of the product positioning platform 20. This central pressing structure 42 is designed for pressing and fixing in complex positions, utilizing the slotted position at the upper end of the middle of the product and the product positioning platform 20 to improve the accuracy of pressing and positioning.

[0037] In this embodiment, a first pressing structure 43 and a second pressing structure 44 are respectively provided on both sides of the product positioning platform 20, located on both sides of the central pressing structure 42, and alternately pressing down on the product. Both the first pressing structure 43 and the second pressing structure 44 are driven by a planar rotary cylinder 431. The output end of the planar rotary cylinder 431 drives the first pressing block 432 and the second pressing block 441 respectively. The planar rotary cylinder 431 is existing technology, that is, it completes the height increase and decrease during the rotation process. The first pressing block 432 and the second pressing block 441 press down alternately. The end of the first pressing block 432 tends to completely press down on one side of the product to be processed. Since milling the outer surface and internal grooving are all vertical cutting operations, vertical vibration must be avoided to prevent breakage of internal holes and grooves. The second pressing block 441 is partially pressed down, so that the end of the second pressing block 441 is away from the side of the relief hole 21 to avoid interference between the blanking process and the second pressing block 441.

[0038] Please see Figures 5 to 7In this embodiment, the product positioning platform 20 is provided with a clearance notch 22 that connects to the product positioning groove 31. The clearance notch 22 is used to reduce the contact area with the outer sidewall of the product, and also facilitates the bonding force on the complex surface of the product and subsequent material removal. In this embodiment, the clearance notch 22 corresponds to the vertical outer wall area of ​​the product. The auxiliary side-pushing component 50 is horizontally inserted into the product positioning platform 20 and can act on the sidewall of the product. Alternatively, an installation space connecting the clearance notch 22 can be provided in the product positioning platform 20 to improve the installation efficiency of the auxiliary side-pushing component 50.

[0039] Specifically, the auxiliary side-push assembly 50 includes a side-push driver 51 mounted on the machine base 10. The side-push driver 51 is a cylinder structure, and a push block 52 is provided at the output end of the side-push driver 51, which is laterally inserted into the product positioning platform 20. To increase the compactness of the structure, the push block 52 has a U-shaped structure and is sleeved on the outside of the planar rotary cylinder 431 to avoid movement interference between the push block 52 and the second pressing block 441.

[0040] At the end of the push block 52 away from the side push driver 51, there is an abutment block 53 with one end extending into the clearance notch 22 and abutting against the side wall of the product. The abutment block 53 has a flat plate structure and abuts against the outer side wall of the product to be processed, which serves to abut against the outer side to receive the force and also facilitates the subsequent material removal problem.

[0041] Optimized design: The abutment block 53 has curved rolled edges 54 on both sides, creating a gap between the edge of the abutment block 53 and the outer wall of the product, making it easier to detach from the adhesive state and avoiding the problem of product movement caused by negative pressure adsorption due to large-area adhesion. It should also be noted that the push block 52 has a strip-shaped limiting hole 55, and the machine base 10 has a stroke limiting post 56 extending into the strip-shaped limiting hole 55. The drive stroke of the push block 52 is controlled by the cooperation of the stroke limiting post 56 and the strip-shaped limiting hole 55, preventing collisions between the abutment block 53 and the product, and between the abutment block 53 and the product positioning platform 20.

[0042] Please see Figure 8 , Figure 9In this embodiment, the parallel clamp assembly 60 is mounted on the machine base 10, with one end capable of passing through the clearance hole 21 and abutting against the side wall of the product. There are three parallel clamp assemblies 60, located at both ends and the middle of the clearance hole 21, respectively. The parallel clamp assemblies 60 serve to position and clamp the inner side wall of the product. Specifically, the parallel clamp assembly 60 includes a clamping driver 61 mounted at the bottom of the machine base 10. The clamping driver 61 is a double-ended drive cylinder. The clamping driver 61 is connected to several drive rods 62 that sequentially pass through the machine base 10 and the clearance hole 21. Abutment clamps 63 are provided on the drive rods 62 that abut against the side wall of the product. There are two common types of drive rods 62. Two drive rods 62 located in the clearance hole 21 have opposite displacement directions. Three drive rods 62 located in the middle of the clearance hole 21 have a larger central drive rod and smaller drive rods 62 on either side of the central drive rod, with the drive rods on either side having the opposite driving direction. This ensures both ends are clamped while maintaining balanced and stable force. The abutment clips 63 are L-shaped, with alternating abutment clips 63 on adjacent drive rods 62 and opposite abutment directions.

[0043] The auxiliary side push component 50 and the parallel clamping component 60 provide auxiliary clamping on the inner and outer walls of the product to be processed. Combined with the contour positioning of the product positioning platform 20, the positioning accuracy of the product is improved, and the loosening and displacement of the product are avoided after blanking.

[0044] Example 2: The present invention also provides a processing device having a milling outer surface blanking clamping fixture as described above. In addition to the milling outer surface blanking clamping fixture, it also includes a material transfer component and a drilling and milling component. The material transfer component and the drilling and milling component are both prior art. The material transfer component includes a material transfer industrial arm, and a suction cup is provided at the output end of the material transfer industrial arm for loading and unloading products. The drilling and milling component is an XYZ three-axis displacement device, and a cutting tool is provided at the output end of the three-axis displacement device for milling the outer surface of the product and blanking processing.

[0045] Example 3: The present invention also provides a processing method for a processing device, the steps of which are as follows: S1, Place the independent product to be processed in the product positioning slot 31; S2, part of the product limiting component 40 acts on the upper edge of the product, the parallel clamping component 60 acts on the inner side wall of the bottom of the product, the auxiliary side push component 50 acts on the outer side wall of the product, and initiates drilling and milling of the product's appearance surface. S3, the product limiting component 40 alternately acts on the upper edge of the product and initiates the blanking process for the product; S4, obtain two finished products processed in step S3, and combine the auxiliary side-push component 50. The parallel clamp assembly 60 and the product limiting assembly 40 return to their original positions in sequence, and the finished product is taken out.

[0046] By processing the outer surface first and then blanking, the product can be enlarged as a whole to increase the volume of the processing unit. This provides a balanced force distribution for processing irregular small parts, avoids the problem of product edge damage and breakage caused by slotting holes, and reduces the difficulty of product unit positioning and improves positioning accuracy.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A blanking fixture for milling outer surfaces, characterized in that, include: The machine (10) has a product positioning platform (20) at the top. The product positioning platform (20) has a product positioning structure (30) for positioning products in the middle. The product positioning structure (30) has a through clearance hole (21) in the middle. Product limiting components (40) are spaced apart on the circumferential outer side of the product positioning platform (20) and act alternately on the circumferential edge of the product; The auxiliary side push assembly (50) is laterally installed on the product positioning platform (20) and can act on the side wall of the product; A parallel clamp assembly (60) is provided on the machine base (10) and one end is provided with a clearance hole (21) and abuts against the side wall of the product in the opposite direction.

2. The blanking fixture for milling outer surfaces according to claim 1, characterized in that, The product positioning structure (30) includes a product positioning groove (31) recessed along the length of the product positioning platform (20). The product positioning groove (31) has an arc-shaped surface (32) that is symmetrically inclined and recessed along the width direction on both sides. The arc-shaped surface (32) has a protruding limiting ridge (33) on the side near the clearance hole (21). An edge limiting ridge (34) is also provided on the product positioning platform (20).

3. The blanking fixture for milling outer surfaces according to claim 2, characterized in that, The clearance hole (21) is located in the middle of the product positioning groove (31) and between the two limiting protrusions (33). There is a gap between the clearance hole (21) and the outer wall of the product.

4. The blanking fixture for milling outer surfaces according to claim 1, characterized in that, The product limiting component (40) includes an end pressing structure (41) disposed at the end of the product positioning platform (20), a middle pressing structure (42) disposed in the middle of the product positioning platform (20), and a first pressing structure (43) and a second pressing structure (44) disposed on both sides of the product positioning platform (20) respectively, which are located on both sides of the middle pressing structure (42) and alternately press down on the product.

5. The blanking fixture for milling outer surfaces according to claim 4, characterized in that, The working surface of the middle pressing structure (42) is located at the upper end of the middle of the product and the upper end of the product positioning platform (20), and the upper end of the middle of the product is flush with the upper end of the product positioning platform (20).

6. The blanking fixture for milling outer surfaces according to claim 1, characterized in that, The product positioning platform (20) is provided with a clearance notch (22) that connects to the product positioning slot (31).

7. The blanking fixture for milling outer surfaces according to claim 6, characterized in that, The auxiliary side push assembly (50) includes a side push driver (51) disposed on the machine base (10), and a push block (52) is provided at the output end of the side push driver (51) that is laterally inserted into the product positioning platform (20). At the end of the push block (52) away from the side push driver (51), there is an abutment block (53) with one end extending into the clearance notch (22) and abutting against the side wall of the product.

8. The blanking fixture for milling outer surfaces according to claim 1, characterized in that, The parallel clamp assembly (60) includes a clamping driver (61) disposed at the bottom of the machine base (10). The clamping driver (61) is connected to a plurality of drive rods (62) that pass through the machine base (10) and the clearance hole (21) in sequence. Each drive rod (62) is provided with an abutment clamp (63) that can abut against the side wall of the product. The abutment clamps (63) on adjacent drive rods (62) are staggered and have opposite abutment directions.

9. A processing equipment, characterized in that, A blanking fixture for milling outer surfaces as described in any one of claims 1-8.

10. A processing method using the processing equipment as described in claim 9, characterized in that, The method and steps are as follows: S1, place the independent product to be processed in the product positioning slot (31); S2, part of the product limiting component (40) acts on the upper edge of the product, the parallel clamping component (60) acts on the inner side wall of the bottom of the product, the auxiliary side push component (50) acts on the outer side wall of the product, and initiates drilling and milling of the product's appearance surface. S3, the product limiting component (40) alternately acts on the upper edge of the product and initiates blanking processing on the product; S4, obtain two finished products processed by step S3, and add the auxiliary side push component (50). The parallel clamp assembly (60) and the product limiting assembly (40) return to their original positions in sequence, and the finished product is taken out.

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