Aircraft canopy glass clamping and shaping device and using method thereof

Abstract

The invention belongs to the technical field of aircraft canopy glass heating and shaping, and discloses an aircraft canopy glass clamping and shaping device and a using method thereof. Comprising an integral frame and T-shaped clamps, the overall frame is similar to a canopy framework in shape and comprises a front arc baffle, a rear arc baffle and two side baffles. The inclination angles and radians of the front arc baffle and the rear arc baffle are consistent with those of the canopy framework; the T-shaped clamp is a clamping fixture and is installed on the overall frame in a threaded connection mode. The T-shaped clamp comprises a stress application rod, a screw rod, a top plate, a support arm, a bottom plate, a positioning pin shaft, a bolt, a tongue piece, a baffle ring, a nut and a baffle plate; according to the invention, large appearance difference before and after shaping of the glass is prevented, and size deviation is extremely easy to generate when allowance cutting work is carried out before shaping of the glass. And non-metal parts on the canopy framework are prevented from aging. The structure is simple and operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of aircraft cockpit canopy glass heating and shaping technology, and in particular to an aircraft cockpit canopy glass clamping and shaping device and its usage method. Background Technology

[0002] The aircraft canopy is a critical component of the life-saving system, serving as the passageway for pilots to enter and exit the cockpit, as well as for ejection. When installing the canopy glass onto the canopy frame after molding, it is crucial to ensure a proper fit between the glass and the frame to prevent deformation, cracks, or other damage caused by assembly stress, which could compromise flight safety. Therefore, before assembling the glass with the frame, it undergoes a heat-shaping process to ensure a perfect fit between the glass and the canopy frame. A schematic diagram of the canopy glass is shown below. Figure 1 .

[0003] The current method for heating and shaping aircraft canopy glass involves first cutting the glass, removing excess material around the edges, then placing the glass on the canopy frame and clamping it with bow clamps. The canopy frame and glass are then placed together in a heating furnace for heating and shaping. This method has two drawbacks: first, the shape of the glass before and after shaping differs significantly; cutting excess material before shaping easily introduces dimensional deviations, and if the shaped dimensions do not meet the frame assembly requirements, the glass must be scrapped; second, some parts of the canopy frame are made of non-metallic materials, which are prone to aging and deformation during heating, affecting repair quality and flight safety. Therefore, this invention designs an aircraft canopy glass clamping and shaping device that can clamp, fix, and shape the canopy glass around its edges during the heating and shaping process.

[0004] This invention provides an aircraft cockpit canopy glass clamping and shaping device that simulates the dimensions and shape of the mating surfaces of the cockpit canopy frame and the glass. The cockpit canopy glass can be placed on the device, clamped and shaped, and then placed together in a heating furnace for heating and shaping. Summary of the Invention

[0005] This invention proposes an aircraft cockpit canopy glass clamping and shaping device and its usage method. This device simulates the mating surface between the canopy frame and the glass, and uses the device to clamp and shape the glass around its perimeter. It replaces the canopy frame for the heating and shaping of the canopy glass, is easy to operate, and avoids the aforementioned problems.

[0006] The technical solution of the present invention is as follows: an aircraft cockpit canopy glass clamping and shaping device, comprising an integral frame 1 and a T-shaped clamp 2;

[0007] The overall frame 1 has a shape similar to the canopy skeleton, including a front arc baffle 6, a rear arc baffle 7 and two side baffles 8;

[0008] The angle and curvature of the front and rear arc baffles are consistent with the canopy frame;

[0009] The T-shaped clamp 2 is a clamping clamp, which is screw-mounted on the overall frame 1;

[0010] The T-shaped clamp 2 includes a force rod a, a screw rod b, a top plate c, a support arm d, a bottom plate e, a positioning pin shaft f, a bolt g, a tongue piece h, a retaining ring i, a nut j and a baffle k;

[0011] The force rod a is sleeved into the threaded hole at one end of the screw rod b, and the two are gap-fitted; the force rod a slides in the threaded hole of the screw rod b, and the two ends of the force rod a are treated by being upset;

[0012] The screw rod b is screw-connected with the support arm d, and the top plate c is sleeved into the screw rod b, and the two are gap-fitted; the end of the screw rod b is treated by being upset to prevent the top plate c from falling off; the force rod a is rotated to drive the screw rod b to rotate on the support arm d, and the top plate c is pushed to move up and down;

[0013] The bottom plate e is screw-mounted on the overall frame 1 on one side, and the other side is fixed with two baffle k, and the other end of the support arm d is clamped between the two baffle k and then screw-fixed;

[0014] The bolt g and the nut j screw the two baffle k and the support arm d together, wherein the support arm d and the baffle k, the bolt g and the baffle k, and the support arm d are all gap-fitted to ensure that the support arm d can rotate around the bolt g; the baffle k and the support arm d are provided with through holes at the same height;

[0015] The positioning pin shaft f penetrates into the through holes of the two baffle k and the support arm d, and is gap-fitted; the retaining ring i is installed in the threaded hole at one end of the positioning pin shaft f, and plays a limiting and pulling-out role; the tongue piece h is riveted and installed in the threaded hole at the other end of the positioning pin shaft f, and the tongue piece h rotates around the riveted rivet, and plays a limiting and quick removal role; when the tongue piece h is adjusted to be coaxial with the positioning pin shaft f in the axial direction, the positioning pin shaft f is penetrated or removed, and vice versa, the removal of the positioning pin shaft f is limited.

[0016] Further, it further includes a handrail 3, a fixed foot 4 and a wheel 5; the handrail 3 is in the shape of a handle and is arranged at the front end and the rear end of the overall frame 1;

[0017] The fixed foot 4 is a ground fixing device of the overall frame 1, which penetrates through the overall frame 1 and is rotationally connected, and when it is unscrewed, the fixed foot 4 contacts the ground to play a fixing role;

[0018] The wheel 5 is a wheel of the overall frame 1, which is used for moving.

[0019] Seven T-shaped clamps 2 are installed on the front arc baffle, eight T-shaped clamps 2 are installed on the side baffles, four on each side, and seven T-shaped clamps 2 are installed on the rear arc baffle.

[0020] A method for using an aircraft canopy cover glass clamping and shaping device, comprising the following steps:

[0021] Step 1. Adjust the tongue h axial direction to be coaxial with the positioning pin shaft f axial direction, pull the blocking ring i, and take out the positioning pin shaft f; rotate the support arm d to move around the bolt g to open the T-shaped clamp 2;

[0022] Step 2. Place the canopy glass on the overall frame 1, and the front arc, both sides and the rear arc correspond to the positions of the overall frame 1;

[0023] Step 3. Rotate the support arm d to move around the bolt g to close the T-shaped clamp 2;

[0024] Step 4. Rotate the force rod a to push the top plate c to clamp the glass, and after the T-shaped clamp 2 is clamped, the shaping function is realized;

[0025] Step 5. Place the glass and the clamping and shaping device in the heating furnace for heating and shaping;

[0026] Step 6. After the shaping is completed, take out the glass in the reverse order and the work is completed.

[0027] The beneficial effects of the present application are: 1. Preventing large differences in the shape of the glass before and after shaping, and the size deviation is easy to occur during the cutting work before the glass shaping.

[0028] 2. Preventing the aging of non-metallic parts on the canopy skeleton.

[0029] 3. Simple structure and easy operation. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic view of the aircraft canopy glass;

[0031] Figure 2 It is a top view of the aircraft canopy glass clamping and shaping device;

[0032] Figure 3 It is a side view of the aircraft canopy glass clamping and shaping device;

[0033] Figure 4 It is a rear view of the aircraft canopy glass clamping and shaping device;

[0034] Figure 5 It is a top view of the overall frame;

[0035] Figure 6 It is a side view of the overall frame;

[0036] Figure 7 It is a three-dimensional view of the T-shaped clamp;

[0037] Figure 8 It is a front view of the T-shaped clamp;

[0038] Figure 9 It is a side view of the T-shaped clamp;

[0039] Figure 10 is a top view of the T-shaped clamp;

[0040] Figure 11 is a three-dimensional view of the aircraft canopy glass clamping and shaping device as a whole.

[0041] In the figure: 1 - overall frame; 2 - T-shaped clamp; 3 - armrest; 4 - fixed foot; 5 - wheel; 6 - front arc baffle; 7 - rear arc baffle; 8 - two side baffles; a - force rod; b - screw rod; c - top plate; d - support arm; e - bottom plate; f - positioning pin shaft; g - bolt; h - tongue; i - baffle ring; j - nut; k - baffle. DETAILED DESCRIPTION

[0042] As shown in Figures 1-10 , an aircraft canopy glass clamping and shaping device includes an overall frame 1, a T-shaped clamp 2, an armrest 3, a fixed foot 4, and a wheel 5.

[0043] The overall frame 1 is the overall frame of the device, wherein the front arc baffle 6, the rear arc baffle 7, and the two side baffles 8 are made to simulate the front arc, the rear arc, and the two side dimensions of the canopy frame, as shown in Figure 5 , Figure 6 ;

[0044] The inclination and curvature of the front arc baffle 6 and the rear arc baffle 7 of the overall frame 1 are consistent with the canopy frame.

[0045] The T-shaped clamp 2 is a clamping fixture of the device, which is screw-mounted on the overall frame, wherein 7 pieces are installed on the front arc baffle, 8 pieces (4 pieces on each side) are installed on the two side baffles, and 7 pieces are installed on the rear arc baffle, totaling 22 pieces. The external shape of the T-shaped clamp 2 is shown in Figures 7-10 ;

[0046] The force rod a is sleeved into the screw hole at the top end of the screw rod b, which is a clearance fit. The force rod a can slide in the screw hole of the screw rod b. The two ends of the force rod a are treated with a bump to prevent it from falling off.

[0047] The screw rod b is screw-connected with the support arm d, and the top plate c is sleeved into the screw rod b. The end of the screw rod b is treated with a bump to prevent c from falling off. Rotating the force rod a can drive the screw rod b to rotate on the support arm d, and push the top plate c to move up and down.

[0048] The bottom plate e is screw-mounted on the overall frame, and the two baffles k are welded to the bottom plate e. The bottom end of the support arm d is clamped between the two baffles k.

[0049] The bolt g and the nut j screw the two baffles k and the support arm d together. The support arm d and the baffle k, the bolt g and the baffle k, and the support arm d are all clearance fits to ensure that the support arm d can rotate around the bolt g.

[0050] The positioning pin f passes through the holes of the two baffles k and the support arm d, with clearance fit. The retaining ring i is installed in the screw hole at one end of the positioning pin, which serves to limit and pull out. The tongue h is riveted (the rivet is not shown) and installed in the screw hole at the other end of the positioning pin f. The tongue can rotate around the rivet, which serves to limit and quickly remove the pin. When the tongue h is adjusted to be coaxial with the positioning pin f, the positioning pin f can be inserted or removed. Conversely, it restricts the removal of the positioning pin f.

[0051] The handrail 3 is shaped like a handle, with one at the front and one at the rear, and the entire device can be moved by using the handrail 3.

[0052] The fixing foot 4 is the ground fixing device for the entire device. It can be fixed by rotating the knob on the top and rotating it down so that the fixing foot 4 contacts the ground.

[0053] The wheel 5 is the wheel of the entire device, which facilitates the movement of the device.

[0054] Usage instructions (in) Figure 1 (as shown in the state)

[0055] 1. Adjust the tongue h to be coaxial with the positioning pin f, pull the retaining ring i, remove the positioning pin f, rotate the support arm d, move it around the bolt g, and open the 22-piece T-clamp 2.

[0056] 2. Place the canopy glass on the overall frame 1, with the front arc, sides, and rear arc corresponding to the positions on the overall frame 1.

[0057] 3. Rotate the support arm d to move around the bolt g ​​and close the 22 T-clamps 2.

[0058] 4. Rotate the force lever a to push the top plate c to clamp the glass. Once all 22 T-shaped clamps 2 are clamped, the shaping function is achieved.

[0059] 5. Place the glass and the device together in the heating furnace and heat them to shape them.

[0060] 6. After the shaping is complete, the glass can be removed in the reverse order described above, and the work is finished.

Claims

1. A clamping and shaping device for aircraft cockpit canopy glass, characterized in that, Includes the overall frame (1) and T-clamp (2); The overall frame (1) is similar in shape to the canopy frame and includes a front arc baffle (3), a rear arc baffle (4) and side baffles (5). The angle and curvature of the front and rear arc baffles are consistent with the canopy frame; The T-clamp (2) is a clamping fixture, which is screwed onto the overall frame (1); The T-clamp (2) includes a force-adding rod (a), a screw (b), a top plate (c), a support arm (d), a bottom plate (e), a positioning pin (f), a bolt (g), a tongue (h), a retaining ring (i), a nut (j), and a baffle (k); The extension rod (a) is fitted into the threaded hole at one end of the screw rod (b), with a clearance fit between the two; the extension rod (a) slides in the threaded hole of the screw rod (b), and the ends of the extension rod (a) are finished with abutment. The screw (b) is screwed to the support arm (d), and the top plate (c) is fitted into the screw (b) with clearance fit; the end of the screw (b) is reinforced to prevent the top plate (c) from falling off. Rotating the force rod (a) causes the screw (b) to rotate on the support arm (d), pushing the top plate (c) to move up and down. The base plate (e) is screwed onto the overall frame (1) on one side, and two baffles (k) are fixed on the other side. The other end of the support arm (d) is clamped between the two baffles (k) and screwed in. Bolts (g) and nuts (j) screw the two baffles (k) and the support arm (d) together. The support arm (d) and the baffle (k), the bolt (g) and the baffle (k), and the support arm (d) are all clearance fits to ensure that the support arm (d) can rotate around the bolt (g). The baffles (k) and the support arm (d) are provided with through holes at the same height. The positioning pin (f) is inserted into the through holes of the two baffles (k) and the support arm (d) for clearance fit; the retaining ring (i) is installed in the screw hole at one end of the positioning pin (f) to limit and pull out; the tongue (h) is riveted to the screw hole at the other end of the positioning pin (f). The tongue (h) rotates around the riveted rivet to limit and quickly remove the pin. When the tongue (h) is axially adjusted to be coaxial with the positioning pin (f), it can be inserted into or removed from the positioning pin (f). Conversely, it restricts the removal of the positioning pin (f).

2. The aircraft cockpit canopy glass clamping and shaping device according to claim 1, characterized in that, It also includes handrails (3), fixed feet (4), and wheels (5); the handrails (3) are handle-shaped and are arranged at the front and rear ends of the overall frame (1); The fixed foot (4) is a ground fixing device for the overall frame (1). It passes through the overall frame (1) and is rotatably connected. When it is unscrewed, the fixed foot (4) contacts the ground and plays a fixing role. The wheel (5) is the wheel of the overall frame (1) and is used for movement.

3. The aircraft cockpit canopy glass clamping and shaping device according to claim 1, characterized in that, Seven T-shaped clips (2) are installed on the front arc baffle, eight T-shaped clips (2) are installed on the two side baffles, four on each side, and seven T-shaped clips (2) are installed on the rear arc baffle.

4. A method of using an aircraft cockpit canopy glass clamping and shaping device, characterized in that, The steps include the following: Step 1. Adjust the axial direction of the tongue (h) to be coaxial with the axial direction of the positioning pin (f), pull the retaining ring (i), and take out the positioning pin (f); rotate the support arm (d) to move around the bolt (g) and open the T-clamp (2); Step 2. Place the canopy glass on the overall frame (1), with the front arc, sides, and rear arc corresponding to the positions of the overall frame (1); Step 3. Rotate the support arm (d) to move around the bolt (g) and close the T-clamp (2); Step 4. Rotate the lever (a) to push the top plate (c) to clamp the glass. After all the T-clamps (2) are clamped, the shaping function is achieved. Step 5. Place the glass and the clamping and shaping device together in the heating furnace for heating and shaping; Step 6. After the shaping is complete, remove the glass in the reverse order described above. The work is now finished.

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