Fixing clamp for aviation parts

Abstract

The utility model provides a stationary fixture for aeronautical parts, which comprises a bottom frame, a plurality of support columns are vertically fixed on the bottom frame, and a base plate is fixed at the upper ends of the support columns; a plurality of rectangular grooves are formed in the upper end face of the base plate, a Y-direction sliding groove, an X-direction sliding groove and a positioning hole are formed in the bottom face of each rectangular groove, and the positioning holes are located in the extending intersection positions of the Y-direction sliding grooves and the X-direction sliding grooves. A first clamping piece is arranged in the Y-direction sliding groove in a sliding mode, and a second clamping piece is arranged in the X-direction sliding groove in a sliding mode. According to the clamp, the first clamping piece and the second clamping piece are matched with the side edge of the groove, independent clamping of the periphery of a part is achieved, and the stability and accuracy of the part in the machining or measuring process are guaranteed. Therefore, the upper and lower surfaces of the part are prevented from being shielded by the clamping piece, and the upper and lower surfaces of the part can be measured conveniently. In addition, the clamp can clamp a plurality of parts at a time, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fixture especially relates to a kind of fixed fixture for aviation parts. BACKGROUND

[0002] In the processing and measurement process of aviation parts, the use of fixed fixture is essential. The existing aviation parts fixed fixture has some problems. On the one hand, some clamps will block the upper and lower surfaces of the parts during clamping, which makes it impossible to directly operate when measuring the upper and lower surfaces of the parts, increasing the complexity and time cost of measurement. On the other hand, many clamps are designed for single product clamping, which is low in efficiency when multiple parts are processed or measured in batches, and cannot meet the needs of efficient production. SUMMARY

[0003] To solve the above-mentioned problems in the prior art, such as interference with the measurement surface and low efficiency of the clamp, the utility model provides a fixed fixture for aviation parts.

[0004] Technical scheme: a fixed fixture for aviation parts, comprising a chassis, a plurality of support columns are vertically fixed on the chassis, and a base plate is fixed at the upper end of the support column; a plurality of rectangular grooves are provided on the upper end surface of the base plate, a Y-direction sliding groove, an X-direction sliding groove and a positioning hole are provided on the bottom surface of each rectangular groove, and the positioning hole is located at the extension intersection of the Y-direction sliding groove and the X-direction sliding groove; a first clamping member is slidably arranged in the Y-direction sliding groove, and a second clamping member is slidably arranged in the X-direction sliding groove; a first driving mechanism and a second driving mechanism are provided on the chassis to drive the first clamping member and the second clamping member to move along the Y-direction sliding groove and the X-direction sliding groove respectively.

[0005] In addition, it is particularly preferred that the first driving mechanism comprises a longitudinal sliding rail, a longitudinal sliding block and a first cylinder; the longitudinal sliding rail and the first cylinder are fixed on the chassis, the longitudinal sliding block is slidably connected to the longitudinal sliding rail, the first clamping member is connected to the longitudinal sliding block, and the longitudinal sliding block is fixed to the first cylinder through a first connecting plate; the first cylinder drives the longitudinal sliding block and the first clamping member to move through the first connecting plate.

[0006] In addition, it is particularly preferred that the second driving mechanism comprises a transverse sliding rail, a transverse sliding block and a second cylinder; the transverse sliding rail is fixed on the chassis, the transverse sliding block is slidably connected to the transverse sliding rail, the second clamping member is connected to the transverse sliding block, and the transverse sliding block is fixed to the second cylinder through a second connecting plate; the second cylinder drives the transverse sliding block and the second clamping member to move through the second connecting plate.

[0007] In addition, it is particularly preferred that the base frame is further provided with a first guide mechanism and a second guide mechanism; the first guide mechanism comprises a first fixed block and a first guide rod horizontally penetrating through the first fixed block, one end of the first guide rod being fixed with the longitudinal sliding block; the second guide mechanism comprises a second fixed block and a second guide rod horizontally penetrating through the second fixed block, one end of the second guide rod being fixed with the transverse sliding block.

[0008] In addition, it is particularly preferred that the first clamping member and the second clamping member are respectively provided with flexible gaskets at front ends thereof, the flexible gaskets being made of silica gel or polyurethane.

[0009] In addition, it is particularly preferred that the support column is a telescopic column.

[0010] Compared with the prior art, the clamp has the following advantages: the clamp is provided with a plurality of rectangular grooves on a base plate, X-direction sliding grooves, Y-direction sliding grooves and positioning holes are formed in bottom surfaces of the rectangular grooves, meanwhile, first clamping members and second clamping members are respectively arranged in the two sliding grooves, and independent driving mechanisms are arranged, the independent clamping of the outer periphery of the parts is realized through the cooperation of the clamping members and the side edges of the grooves, and the stability and accuracy of the parts during the machining or measuring process are ensured. In this way, the upper surface and the lower surface of the parts are conveniently measured by avoiding the shielding of the clamping members on the upper surface and the lower surface of the parts. In addition, the clamp can clamp a plurality of parts at one time, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0012] Figure 2 It is a structure schematic view of the support column and the first clamping member of the utility model.

[0013] Figure 3 It is a structure schematic view of the first clamping member, the longitudinal sliding rail, the longitudinal sliding block and the first guide mechanism of the utility model.

[0014] Figure 4 It is a structure schematic view of the second clamping member, the transverse sliding rail, the transverse sliding block, the second guide mechanism and the flexible gasket of the utility model.

[0015] The above-mentioned figures include the following reference numerals: 1. Base frame, 2. Support column, 3. Base plate, 31. Rectangular groove, 32. Y-axis slide groove, 33. X-axis slide groove, 34. Positioning hole, 4. First clamping member, 41. Longitudinal slide rail, 42. Longitudinal slider, 43. First cylinder, 44. First connecting plate, 5. Second clamping member, 51. Transverse slide rail, 52. Transverse slider, 53. Second cylinder, 54. Second connecting plate, 6. First guide mechanism, 61. First fixing block, 62. First guide rod, 7. Second guide mechanism, 71. Second fixing block, 72. Second guide rod, 8. Flexible pad. Detailed Implementation

[0016] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0017] like Figures 1-4 The shown aerospace component fixing fixture includes a base frame 1, on which multiple support columns 2 are vertically fixed. A base plate 3 is fixed to the upper end of each support column 2. The upper surface of the base plate 3 has multiple rectangular grooves 31. The bottom surface of each rectangular groove 31 has a Y-direction sliding groove 32, an X-direction sliding groove 33, and a positioning hole 34. The positioning hole 34 is located at the intersection of the extensions of the Y-direction sliding groove 32 and the X-direction sliding groove 33. A first clamping member 4 is slidably disposed within the Y-direction sliding groove 32, and a second clamping member 5 is slidably disposed within the X-direction sliding groove 33. Further, the first clamping member... The front ends of the clamping member 4 and the second clamping member 5 are fixed with flexible pads, which are made of silicone or polyurethane. The base frame 1 of the fixing fixture is also provided with a first driving mechanism and a second driving mechanism, which drive the first clamping member 4 and the second clamping member 5 to move along the Y-direction slide groove 32 and the X-direction slide groove 33, respectively. The clamping and fixing of the parts is achieved through the first clamping member 4, the second clamping member 5 and the side wall of the rectangular groove 31. In addition, the contact surface of the silicone pad is provided with anti-slip texture, which reduces local stress through elastic buffering and avoids deformation or surface scratches of the parts.

[0018] In one specific embodiment, two support columns 2 (height adjustable) are vertically welded onto the base frame 1. The top of the support columns 2 is fixed to the base plate 3 by bolts. The upper surface of the base plate 3 is machined with four rectangular grooves 31. The rectangular grooves 31 adopt a modular structure and are installed on the base frame 1 by magnetic attraction or snap-fit. The positioning hole 34 is located at the intersection of the extensions of the two slides and is used to insert a positioning pin for initial positioning. For parts with holes or grooves on the surface, the positioning pin is used for coarse positioning.

[0019] As Figure 3 shown, the first driving mechanism includes a longitudinal slide rail 41, a longitudinal slide block 42 and a first cylinder 43, wherein the longitudinal slide rail 41 is fixed on the chassis 1 by bolts, the longitudinal slide block 42 is slidingly connected to the slide rail 41, and the first clamping piece 4 is fixedly connected to the longitudinal slide block 42. The cylinder body of the first cylinder 43 is fixed on the upper side of the chassis 1, and the piston rod drives the longitudinal slide block 42 to move through the first connecting plate 44, while driving the first clamping piece 4 to slide in the Y-direction sliding groove 32 through the longitudinal slide block 42.

[0020] As Figure 4 shown, the second driving mechanism includes a transverse slide rail 51, a transverse slide block 52 and a second cylinder 53, the transverse slide rail 51 is fixed on the chassis 1 by bolts, the arrangement direction of the transverse slide rail 51 is perpendicular to the arrangement direction of the longitudinal slide rail 41, the second clamping piece 5 is fixedly connected to the transverse slide block 52, and the second cylinder 53 is arranged on the chassis 1 to drive the transverse slide block 52 to move. The clamp is driven by double cylinders to realize X / Y bidirectional synchronous clamping. In a preferred embodiment, the cylinders 43, 53 use servo electric cylinders, integrate a PLC control system, and realize closed-loop control of clamping force and displacement. Pressure sensors are embedded in the first clamping piece 4 and the second clamping piece 5 respectively, to display the clamping force in real time and alarm when the limit is exceeded.

[0021] In addition, referring to Figure 3 and Figure 4 , the first guide mechanism 6 includes a first fixed block 61 (welded to the chassis 1) and a first guide rod 62, one end of the first guide rod 62 is fixedly connected to the longitudinal slide block 42, and the other end passes through a horizontal hole of the first fixed block 61 and is slidingly connected thereto. The second guide mechanism 7 has basically the same structure as the first guide mechanism 6, including a second fixed block 71 and a second guide rod 72 horizontally penetrating the second fixed block 71, the second fixed block 71 is fixed on the chassis 1, one end of the second guide rod 72 is fixedly connected to the transverse slide block 52 through an ear plate, and the other end is slidingly matched with a horizontal hole opened at the upper end of the second fixed block 71. The cooperation of the guide rod and the fixed block eliminates the lateral deviation of the cylinder drive, ensuring the stability of the linear motion of the clamping piece.

[0022] Further, the support column 2 is of a telescopic structure, such as an electric rod, a telescopic cylinder, etc. The electric telescopic column is suitable for workpieces of different thicknesses, reducing the changeover time.

[0023] The working principle of the clamp is as follows:

[0024] 1. Initial positioning: place the aviation parts on the base plate 3, and complete the rough positioning by the positioning pins pre-inserted into the positioning holes 34.

[0025] 2. Clamping adjustment: start the first cylinder 43 and the second cylinder 53, drive the first clamping piece 4 and the second clamping piece 5 to move along the Y-direction sliding groove 32 and the X-direction sliding groove 33 respectively, until the silica gel pad 8 contacts the side wall of the part.

[0026] 3. Locking detection: after the clamping force reaches the set value (feedback by the pressure sensor), the cylinder automatically maintains pressure, and the fixing is completed.

[0027] The embodiment significantly improves the clamping efficiency and quality of the aviation parts by the modular structure and the high-precision driving design, and is suitable for manufacturing scenes such as aircraft assembly lines, detection lines and composite material forming.

[0028] The above embodiment only expresses the preferred embodiment of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A fixing fixture for aerospace parts, characterized in that, It includes a chassis (1), a plurality of support columns (2) are vertically fixed on the chassis (1), and the upper end of the support column (2) is fixed with a base plate (3); The upper end surface of the base plate (3) is provided with a plurality of rectangular grooves (31), the bottom surface of each rectangular groove (31) is provided with a Y-direction sliding groove (32), an X-direction sliding groove (33) and a positioning hole (34), and the positioning hole (34) is located at the extension intersection of the Y-direction sliding groove (32) and the X-direction sliding groove (33); The first clamping part (4) is slidably arranged in the Y-direction sliding groove (32), and the second clamping part (5) is slidably arranged in the X-direction sliding groove (33); The chassis (1) is provided with a first driving mechanism and a second driving mechanism, which respectively drive the first clamping part (4) and the second clamping part (5) to move along the Y-direction sliding groove (32) and the X-direction sliding groove (33).

2. The fixture for an aircraft part according to claim 1, wherein The first driving mechanism comprises a longitudinal sliding rail (41), a longitudinal sliding block (42) and a first cylinder (43); The longitudinal sliding rail (41) and the first cylinder (43) are fixed on the chassis (1), the longitudinal sliding block (42) is slidably connected to the longitudinal sliding rail (41), the first clamping part (4) is connected to the longitudinal sliding block (42), and the longitudinal sliding block (42) is fixed to the first cylinder (43) through the first connecting plate (44); The first cylinder (43) drives the longitudinal sliding block (42) and the first clamping part (4) to move through the first connecting plate (44).

3. The fixing jig for an aeronautical part according to claim 1 or 2, characterized in that, The second driving mechanism comprises a transverse sliding rail (51), a transverse sliding block (52) and a second cylinder (53); The transverse sliding rail (51) is fixed on the chassis (1), the transverse sliding block (52) is slidably connected to the transverse sliding rail (51), the second clamping part (5) is connected to the transverse sliding block (52), and the transverse sliding block (52) is fixed to the second cylinder (53) through the second connecting plate (54); The second cylinder (53) drives the transverse sliding block (52) and the second clamping part (5) to move through the second connecting plate (54).

4. The fixture for an aircraft part according to claim 3, wherein The chassis (1) is further provided with a first guide mechanism (6) and a second guide mechanism (7); The first guide mechanism (6) comprises a first fixed block (61) and a first guide rod (62) horizontally penetrating the first fixed block (61), and one end of the first guide rod (62) is fixed to the longitudinal sliding block (42); The second guide mechanism (7) comprises a second fixed block (71) and a second guide rod (72) horizontally penetrating the second fixed block (71), and one end of the second guide rod (72) is fixed to the transverse sliding block (52).

5. The fixture for an aircraft part according to claim 4, wherein Flexible gaskets (8) are arranged at the front ends of the first clamping part (4) and the second clamping part (5) respectively, and the material of the flexible gaskets is silica gel or polyurethane.

6. The fixture for an aircraft part according to claim 5, wherein The support column (2) is a telescopic column.

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