TW202333888A - Fixture device for preventing deformation of curved plate during processing comprising a base, two rows of clamping devices and a plurality of supporting devices - Google Patents

Abstract

The present invention provides a fixture device for preventing the machining deformation of a curved plate, which is disposed on a machining table of a machine tool to fix a curved plate to be processed, and comprises a base, two rows of clamping devices and a plurality of supporting devices, wherein the two rows of clamping devices and the plurality of supporting devices are disposed on the base. Each of the clamping devices includes a stationary jaw, a moving jaw, and an adjusting structure. The adjusting structure is used to drive the moving jaw and the stationary jaw to jointly clamp an edge of the curved plate. The plurality of supporting devices are fixed on base at intervals. Each of the supporting devices has a plurality of hydraulic pushing units. The actuation rod of the hydraulic pushing unit is combined with a support element. Therefore, a large-sized curved plate can be positioned and clamped between the two rows of clamping devices. The hydraulic pushing units can be controlled to move upward so that the support element is held on the concave curved surface of the curved plate to achieve the purposes of fast and precise positioning, clamping, and supporting so as to prevent the machining deformation occurred in a cutting process.

Description

Fixing device to prevent deformation during processing of curved panels

The present invention relates to the technical field of a cutting jig, and in particular, to a fixing device that can prevent curved plate parts from being deformed during processing, and is suitable for precision cutting of curved plate parts used in aerospace.

In today's metal precision cutting technology field, multi-axis integrated processing machines (such as five-axis processing machines) are commonly used to execute processing programs. In order to meet the high-precision requirements of products, the processing process must strictly control various parameters, including machine tools. Precision, machine tool thermal deformation, tool precision, feed speed and vibration and other parameters. Among them, the processed product itself also has many factors that lead to processing deformation, such as material and product shape, pressure of the clamping device, etc. In particular, large casing panels (curved panels) used in aerospace turbofan engines are precision machined from titanium alloys, and are very prone to the above-mentioned processing deformation during processing.

The conventional technology used to prevent processing deformation is to use a clamp to fix the curved plate. There are a plurality of support blocks on the clamp to support the inner surface of the curved plate. However, the technology using support blocks cannot be used with the processing. Parameter controls its support strength. Later, the screw-adjusted support technology was used, but this adjustment method made the clamping, positioning, supporting and correction of curved plate parts too complicated before processing, and it was also not conducive to adjustment according to various processing parameters. To this end, how to propose a fixing device that can prevent large curved plates from being deformed during processing and can clamp, position and support quickly and accurately is a subject that the present invention actively attempts to overcome.

The purpose of the present invention is to provide a fixing device that prevents processing deformation of curved plate parts, thereby achieving the purpose of accurately and quickly completing clamping, positioning and supporting operations before cutting, and preventing processing deformation.

In order to achieve the above object, the fixing device of the present invention to prevent the processing deformation of a curved plate is used to be installed on the processing platform of a machine tool to fix a curved plate. The preferred technical solution includes: a base, which is fixed on this processing platform. There are two rows of clamping devices, which are multiple and spaced apart and fixed on both sides of the top surface of the base. Each clamping device has a fixed jaw, a movable jaw and an adjustment structure; the fixed jaw is fixed on the top of the base. surface; the movable jaw is movably set on the fixed jaw through the adjustment structure, and a clamping mouth is formed between the movable jaw and the fixed jaw towards the center of the base; the adjustment structure drives the movable jaw to move, so that the movable jaw and the fixed jaw The fixed jaw clamps the edge of the curved plate. And a plurality of support devices, which are arranged at intervals and fixed on the top surface of the base, and are located between the two rows of clamping devices; each support device has a support base, and a plurality of hydraulic push units are provided on the top surface of the support base. , the upper end of an actuating rod of each hydraulic push unit is combined with a supporting element, and the actuating rod drives the supporting element to hold against a concave curved surface of the curved plate.

In the above-mentioned fixing device for preventing processing deformation of curved plate parts, the two rows of clamping devices include at least one first clamping device located at the front and rear ends of each row, and one of the first clamping devices located at the front and rear ends of each row. There are several second clamping devices in between, the first clamping device is used to clamp and support the curved plate, and the second clamping device is only used to clamp the curved plate.

In the above-mentioned fixing device for preventing processing deformation of curved plate parts, the fixed jaw of the first clamping device has a first clamping slope and a first supporting surface corresponding to the edge structure of the curved plate part. The first clamping device The inclined plane and the first supporting surface are perpendicular to each other; the movable jaw is provided with a first clamping block on a side relative to the first clamping inclined plane; the end surfaces of the first clamping inclined plane and the first clamping block are used to clamp together The edge of the curved plate is used to support the first supporting surface on the concave curved surface of the curved plate.

In the above-mentioned fixing device for preventing processing deformation of curved plates, the fixed jaw of the second clamping device has a second clamping slope corresponding to the edge structure of the curved plate, and the second clamping slope is provided with a second clamping block ; The movable jaw is provided with a third clamping block on one side relative to the second clamping slope, and the end surface of the second clamping block and the end surface of the third clamping block are used to jointly clamp the edge of the curved plate.

In the above-mentioned fixing device for preventing processing deformation of curved plate parts, the bottom end of the fixed jaw has two transversely protruding bumps, and the two bumps are fixed on the base through screws or holding pieces.

In the above-mentioned fixing device for preventing processing deformation of curved plate parts, the adjustment structure has an adjustment bolt, which passes through the movable jaw and is screwed on the fixed jaw.

In the above-mentioned fixing device for preventing processing deformation of curved plate parts, the support base is a bar-shaped block extending to both sides of the base. The support base has a plurality of connected top surfaces, and each of the top surfaces faces the base in different directions. The concave curved surface of the curved plate; and the hydraulic push unit is fixed on the top surface.

In the above fixing device for preventing processing deformation of curved plate parts, the top surface of the supporting element is a spherical surface.

Compared with the conventional technology, the present invention has the following advantages: the two-row clamping device can accurately and stably fix the curved plate; and the hydraulic push unit of the plurality of support devices can be controlled to move upward. The spherical surface of the support element is held against the concave surface of the curved plate to achieve the functions of rapid and precise positioning, clamping and support, and to avoid processing deformation during cutting.

The structural features and other functions and purposes of the present invention are described in detail below with reference to the embodiments of the drawings:

Referring to Figures 1, 2 and 3, the present invention shows a fixing device for preventing deformation of a curved plate during processing. It is used to be installed on the processing platform of a machine tool to fix a curved plate 100 for cutting. Processing, the preferred embodiment includes a base 10, two rows of clamping devices 20 and a plurality of supporting devices 30, wherein:

The base 10 is a rectangular plate or other configuration, which is used to be fixed on the processing platform of the machine tool, so that the base 10 serves as the installation platform of the clamping device 20 and the supporting device 30, and facilitates the entire fixing device on the processing platform. for installation and replacement.

The two-row clamping devices 20 are composed of a plurality of spaced apart fixings on both sides 11 and 12 of the top surface of the base 10. Each clamping device 20 has a fixed jaw 21, a movable jaw 22 and an adjustment structure 23 respectively. ; The fixed jaw 21 is a metal block fixed on the top surface of the base 10, which is used to clamp the curved plate 100 together with the movable jaw 22; the movable jaw 22 is movable on the fixed jaw 23 through the adjustment structure 23. On the jaw 21, a clamp 28 is formed between the movable jaw 22 and the fixed jaw 23 toward the center of the base 10. The clamp 28 is used to insert the curved plate 100; the adjustment structure 23 is to drive the The manual adjustment structure or automatic adjustment structure of the movement of the movable jaw 22 allows the movable jaw 22 and the fixed jaw 21 to jointly clamp the edge of the curved plate 100; among which, the manual adjustment structure 23 is one of the preferred embodiments. First, an adjusting bolt 231 can be implemented. The adjusting bolt 231 passes through the movable jaw 22 and is screwed on the fixed jaw 21. By tightening or loosening the adjusting bolt 231, the movable jaw 22 can have The function of clamping or loosening the curved plate 100.

The plurality of supporting devices 30 are spaced apart and fixed on the top surface of the base 10 , and are located on the top surface of the base 10 between the two rows of clamping devices 20 , and are used for cutting the curved plate 100 with the tool of the machine tool. At this time, it can be supported on the concave curved surface 101 of the curved plate 100 with a set force. Each support device 30 is specifically implemented with a support base 31. The support base 31 is a bar-shaped block extending toward both sides 11 and 12 of the base 10. The support base 31 has a plurality of connected top surfaces 311, each of which has a plurality of connected top surfaces 311. The top surface 311 faces the concave curved surface 101 of the curved plate 100 in different directions; each top surface 311 is provided with at least one hydraulic pushing unit 32, and the hydraulic pushing unit 32 is an existing object. The upper end of an actuating rod 321 of the pressure ejection unit 32 is combined with a support element 33 (as shown in Figures 8 and 9). The top surface of the support element 33 is a spherical surface 331; each hydraulic ejection unit 32 passes through an oil pressure pipe. The hydraulic push unit 32 is connected through a control valve, so that the actuating rod 321 can drive the support element 33 to hold the concave surface 101 of the curved plate 100, and vice versa drive the support element 33. Get away from the concave curved surface 101.

Through the above-mentioned fixing device technology for preventing curved plate processing deformation, the present invention can place the curved plate 100 for aerospace applications that requires high-precision processing between two rows of clamping devices 20, so that each clamping device can The fixed jaw 21 and the movable jaw 22 of the device 20 are jointly clamped on the edge of the curved plate 100 (as shown in Figure 3). Before the protruding curved surface 102 of the curved plate 100 is cut, each hydraulic pushing unit 32 is controlled to move upward, so that the support element 33 is held against the concave curved surface 101 of the curved plate 100 (such as As shown in Figure 9), it is possible to prevent processing deformation caused by cutting. A more beneficial effect of the present invention than the conventional technology is that the supporting force of the hydraulic pushing unit 32 can be dynamically set, for example, according to factors such as different tools, feed speeds, or processing parts, so as to facilitate control of its supporting force and enable Complete clamping, positioning and supporting operations before cutting more accurately and quickly.

Referring to Figure 2, the preferred embodiment of the two rows of clamping devices 20 includes at least one first clamping device 20a located at the front and rear ends of each row, and the first clamping device 20a located at the front and rear ends of each row. There are several second clamping devices 20b between 20a. The basic structure of the first clamping device 20a and the second clamping device 20b is as above, but the detailed structure is slightly different, so that the first clamping device 20a is used for The curved plate 100 is clamped and positioned, and the second clamping device 20b is only used to clamp the curved plate 100 .

Specifically, as shown in Figures 4 and 5, the fixed jaw 21 of the first clamping device 20a has a first clamping slope 211 and a first supporting surface 212 corresponding to the edge structure of the curved plate 100. , the first clamping slope 211 and the first support surface 212 are perpendicular to each other or correspond to the edge structural angle of the curved plate 100; the movable jaw 22 is arranged relative to one side (inner surface) of the first clamping slope 211. There is a first clamping block 24; the first clamping slope 211 and the end surface 241 of the first clamping block 24 are used to jointly clamp the edge rib of the curved plate 100, and the first supporting surface 212 is used to jointly clamp the edge rib of the curved plate 100. Supported by the concave curved surface 101 of the curved plate 100 , the curved plate 100 can be positioned between the two rows of clamping devices 20 more quickly and accurately.

As shown in Figures 6 and 7, the fixed jaw 21 of the second clamping device 20b has a second clamping slope 213 corresponding to the edge structure of the curved plate 100. The second clamping slope 213 is provided with a the second clamping block 25; and the movable jaw 22 of the second clamping device 20b is provided with a third clamping block 26 on one side (inner surface) relative to the second clamping slope 213. The third clamping block 26 is the same as the above-mentioned The second clamping block 25 and the first clamping block 24 have the same components, so that the end surface 251 of the second clamping block 25 and the end surface 261 of the third clamping block 26 are used to jointly clamp the edge of the curved plate 100 . Through the arrangement of the first clamping device 20a and the second clamping device 20b in the two rows of clamping devices 20, the present invention can stably clamp and position the curved plate 100.

Referring again to Figures 4 and 6, the bottom ends of the fixed jaws 21 of the first clamping device 20a and the second clamping device 20b have two transversely protruding bumps 214, and the two bumps 214 can be provided with screws. The holes can be fixed on the base 10 through screws, or fixed on the base 10 through screws and the holding member 27 . Referring to FIG. 6 , the fixed jaw 21 of the second clamping device 20 b is fixed to the guide groove 13 on the base 10 using screws and pressing members 27 , which makes it easier to adjust its position.

To sum up, the fixing device for preventing the processing deformation of curved plate parts according to the present invention is indeed practical and creative. The use of its technical means is undoubtedly novel, and the effect is indeed consistent with the design purpose. It can be said to be a reasonable progress. To the Ming Dynasty. For this reason, I filed an invention patent application in accordance with the law, but I sincerely ask the Jun Bureau to review it carefully and grant a patent. I would like to thank you for your kindness.

100: Curved plate 101: Concave surface 102:Protruding surface 10: Base 11, 12: Both sides 13:Guide ditch 20: Clamping device 20a: First clamping device 20b: Second clamping device 21: Fixed jaw 211: First clamping slope 212:First support surface 213: Second clamping slope 214:Bump 22:Mobile jaw 23:Adjust structure 231:Adjustment bolt 24: First clamping block 241: End face 25:Second clamping block 251: End face 26: The third clamping block 261: End face 27: Holding parts 28: clamp mouth 30:Support device 31: Support base 311:Top surface 32:Hydraulic push unit 321:Actuator lever 33:Support element 331: Spherical surface

[Fig. 1] is a schematic assembly diagram of a preferred embodiment of the fixing device of the present invention for clamping and fixing curved plates. [Fig. 2] is an exploded schematic view of a preferred embodiment of the fixing device of the present invention for clamping and fixing curved plates. [Fig. 3] is a schematic cross-sectional view of a preferred embodiment of the fixing device of the present invention for clamping and fixing curved plates. [Fig. 4] is a schematic three-dimensional view of a preferred embodiment of the first clamping device of the present invention. [Fig. 5] is a schematic front view of a preferred embodiment of the first clamping device of the present invention. [Fig. 6] is a schematic three-dimensional view of the second preferred embodiment of the clamping device of the present invention. [Fig. 7] is a schematic front view of the second preferred embodiment of the clamping device of the present invention. [Fig. 8] is a schematic three-dimensional view of a preferred embodiment of the hydraulic push unit of the present invention. [Fig. 9] is a schematic diagram of the support state of the preferred embodiment of the hydraulic push unit of the present invention.

100: Curved plate

101: Concave surface

102:Protruding surface

10: Base

11, 12: Both sides

13:Guide trench

20: Clamping device

20a: First clamping device

20b: Second clamping device

30:Support device

31: Support base

Claims (8)

A fixing device that prevents processing deformation of curved plate parts. It is used to be installed on the processing platform of a machine tool to fix a curved plate part. It includes: A base fixed on the processing platform; There are two rows of clamping devices, which are multiple and spaced apart and fixed on both sides of the top surface of the base. Each clamping device has a fixed jaw, a movable jaw and an adjustment structure; the fixed jaw is fixed on the top of the base. surface; the movable jaw is movably set on the fixed jaw through the adjustment structure, and a clamping mouth is formed between the movable jaw and the fixed jaw towards the center of the base; the adjustment structure drives the movable jaw to move, so that the movable jaw and the fixed jaw The fixed jaw clamps the edge of the curved plate; and A plurality of support devices are arranged at intervals and fixed on the top surface of the base, and are located between the two rows of clamping devices; each support device has a support base, and a plurality of hydraulic push units are provided on the top surface of the support base. The upper end of an actuating rod of each hydraulic pushing unit is combined with a supporting element, and the actuating rod drives the supporting element to hold against a concave curved surface of the curved plate. The fixing device for preventing curved plate processing deformation as described in claim 1, wherein the two rows of clamping devices include at least one first clamping device located at the front and rear ends of each row, and the first clamping device located at the front and rear ends of each row. A plurality of second clamping devices between the first clamping devices. The first clamping device is used to clamp and support the curved plate. The second clamping device is only used to clamp the curved plate. . The fixing device for preventing processing deformation of a curved plate as described in claim 2, wherein the fixed jaw of the first clamping device has a first clamping slope and a first supporting surface corresponding to the edge structure of the curved plate. , the first clamping slope and the first support surface are perpendicular to each other; the movable jaw is provided with a first clamping block on a side relative to the first clamping slope; the first clamping slope and the end surface of the first clamping block The first supporting surface is used to jointly clamp the edges of the curved plate, and the first supporting surface is used to support the concave curved surface of the curved plate. The fixing device for preventing processing deformation of a curved plate as claimed in claim 2, wherein the fixed jaw of the second clamping device has a second clamping slope corresponding to the edge structure of the curved plate, and the second clamping slope A second clamping block is provided; a third clamping block is provided on a side of the movable jaw relative to the second clamping slope, and the end surface of the second clamping block and the end surface of the third clamping block are used to jointly clamp the curved surface. edge of the shaped plate. The fixing device for preventing curved plate processing deformation as described in claim 3 or 4, wherein the bottom end of the fixed jaw has two transversely protruding bumps, and the two bumps are fixed on the base through screws or holding pieces. . As claimed in claim 1, the fixing device for preventing curved plate processing deformation, wherein the adjustment structure has an adjustment bolt that passes through the movable jaw and is screwed on the fixed jaw. The fixing device for preventing curved plate processing deformation as described in claim 1, wherein the support base is a bar-shaped block extending to both sides of the base, and the support base has a plurality of connected top surfaces, each of the top surfaces The concave curved surfaces of the curved plate are oriented in different directions; and the hydraulic push unit is fixed on the top surface. The fixing device for preventing processing deformation of curved plate parts as described in claim 1 or 7, wherein the top surface of the supporting element is a spherical surface.

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