Aviation sheet metal rivet hammer

Abstract

The aviation sheet metal rivet hammer comprises a motor, a speed reduction conversion gear, a straight tooth piston hammer, an air cylinder body, a hammer head, a hammer angle, a hammer shell and a battery pack, the motor drives the speed reduction conversion gear to conduct reciprocating motion on a straight tooth piston, the straight tooth piston compresses nitrogen in an air cylinder body cavity, and high-pressure compression potential energy and high-pressure potential energy of the straight tooth piston hammer are obtained; and the impact hammer head does work, so that the knocking effect is realized.

Description

Technical Field

[0001] The present invention relates to aviation sheet metal tools, and more particularly to a sheet metal rivet hammer. Background Art

[0002] Currently, for the stamping of rivet heads in aviation sheet metal, the equipment used is a pneumatic rivet gun or a hydraulic counter-pressure extrusion pliers. Both require pulling a gas supply pipe or a hydraulic pipe, which is extremely inconvenient to operate in the narrow space inside the wing or fuselage, resulting in low work efficiency.

[0003] Common hammers are held by hand and swung for striking. Engineering assembly technicians use them for calibrating strikes on assembled workpieces, and engineering maintenance personnel use them for striking on overhauled components. This chronically overdraws the strength of the arm and reduces work efficiency. Summary of the Invention

[0004] The present invention provides an electric hammer, and the following technical solutions are adopted. The technical solution includes a motor, a speed reduction and conversion gear, a straight-tooth piston hammer, a cylinder block, a hammer head, a hammer angle, a hammer housing, and a battery pack. The tooth shaft of the motor is in tooth engagement with the speed reduction and conversion gear for torque transfer through steering. The semi-circular gear of the speed reduction and conversion gear is in straight-tooth engagement and reciprocating connection with the straight-tooth of the straight-tooth piston hammer. The piston head of the straight-tooth piston hammer is in piston activity connection with the cylinder sleeve part of the cylinder block, and a nitrogen cavity is provided in the compressed cylinder block. The straight-tooth piston hammer compresses potential energy to strike the hammer angle to do work. The cylinder block and the hammer housing are integrally connected with the built-in battery pack. The hammer head slides and is connected to the cylinder block, and the hammer angle is threadedly fastened to the cylinder block.

[0005] Further, the speed reduction and conversion gear is provided with a full-circle steering gear and a semi-circular reciprocating gear. The two gears are superposed and fastened by a nut. The high speed of the motor is increased in torque and steered through the steering gear.

[0006] Further, the straight-tooth piston hammer is provided with an impact head and a piston ring, and straight teeth are provided on the side. The three functions are integrated into one, including a piston with an impact head, straight teeth for reciprocating piston drive, and a piston ring sleeved on the piston to increase the compression ratio.

[0007] Further, the cylinder block is provided with a nitrogen cylinder block, a hammer head installation locking groove, a thread for the hammer housing, a thread for the hammer angle, and a chute for the straight-tooth piston hammer.

[0008] Further, the motor is electrically connected to a switch. The hammer housing has a built-in cavity, and the wires pass through and are connected in series with the batteries of the battery pack. The handle and the housing are integrally formed with a built-in cavity structure, and the control switch is placed at the handle part for electrically connecting and controlling the strike. Brief Description of the Drawings

[0009] Figure 1 It is a structural diagram of the present invention.

[0010] Figure 2 It is the structural position decomposition diagram of the present invention.

[0011] Figure 3 It is the reciprocating steering deceleration structure diagram of the present invention.

[0012] Figure 4 It is the piston impact hammer structure diagram of the present invention.

[0013] Figure 5 It is the cylinder block structure diagram of the present invention.

[0014] Figure 6 It is the two - view drawing of the compression position of the piston of the present invention.

[0015] Figure 7 It is the two - view drawing of the gear commutation position of the present invention.

[0016] Figure 8 It is the two - view drawing of the impact stroke of the piston hammer of the present invention.

[0017] In the figure, it includes a motor (1), a reduction and conversion gear (2), a full - circle steering gear (201), a semi - circle reciprocating gear (202), a straight - tooth piston hammer (3), a piston ring (302), side straight teeth (301), a cylinder block (4), a locking groove (401), a thread (402), a nitrogen cylinder block (403), a thread (404), a sliding groove (405), a hammer head (5), a hammer angle (6), a hammer housing (7), and a battery pack (8). Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Please refer to Figure 1 The overall structure of an aviation sheet metal rivet hammer combination shown in Figure 2 The decomposed one shown is successively arranged in the X - axis direction of an aviation sheet metal rivet hammer, including a motor (1), a reduction and conversion gear (2), a full - circle steering gear (201), a semi - circle reciprocating gear (202), a straight - tooth piston hammer (3), a piston ring (302), side straight teeth (301), a cylinder block (4), a locking groove (401), a thread (402), a nitrogen cylinder block (403), a thread (404), a sliding groove (405), a hammer head (5), a hammer angle (6), a hammer housing (7), and a battery pack (8).

[0019] Preferably, as shown in Figure 3The shown speed reduction and conversion gear (2) is provided with a full-circle steering gear (201) and a semi-circle reciprocating gear (202). The two gears are superposed and fastened by screws passing through screw holes (205). A shaft passes through the coaxial holes (204) of the full-circle steering gear (201) and the semi-circle reciprocating gear (202), and both ends of the shaft are fixed to the housing. The shaft gear (101) of the motor (1) meshes with the steering tooth (203) to transmit torque through a right-angle steering, and the semi-circle reciprocating gear (206) meshes with the straight-tooth piston hammer (301).

[0020] Preferably, as Figure 4 shown, the straight-tooth piston hammer (3) is provided with an impact head and a piston ring (302), and straight teeth (301) are arranged on the side. The straight-tooth piston hammer (3) is placed in the chute (405) of the cylinder block (4).

[0021] Preferably, as Figure 5 shown, the cylinder block (4) is provided with a nitrogen cylinder block (403), and the inner cavity is filled with inert gas, nitrogen, to ensure the maximum elastic potential energy obtained by compression and the lowest energy loss. A hammer head (5) is provided with a mounting lock groove (401), a ball is placed in the side lock hole, a rear spring is provided, and then it is fastened and sealed with screws, and the chute (501) of the hammer head (5) can be locked as Figure 2 shown. The cylinder block (4) is provided with a thread (404) of the hammer housing (7) and is fastened by screws, the cylinder block (4) is provided with a thread (402) of the hammer angle (6) and is fastened by screws, the cylinder block (4) is provided with a chute (405) of the straight-tooth piston hammer (3) and is placed inside for movable support, and an inflation hole (406) is provided at the top for filling nitrogen.

[0022] Preferably, as shown, the motor (1) is electrically connected to a switch. The hammer housing (7) has an internal cavity, and wires pass through and are connected in series with the batteries of the battery pack (8). With the internal cavity structure, the control switch is placed at the handle part and is electrically connected to control the knocking.

[0023] As Figure 6 shown, the position of the semi-circle reciprocating gear (202) and the straight-tooth piston hammer (3) at the initial stroke, as Figure 7 shown, the position of the semi-circle reciprocating gear (202) and the straight-tooth piston hammer (3) at the compression stroke, as Figure 8 shown, the position of the semi-circle reciprocating gear (202) and the straight-tooth piston hammer (3) at the impact stroke.

[0024] Example 1, as Figure 2 shown, the chute (501) of the hammer head (5) is provided with a replaceable hammer head. When riveting the rivets of aviation sheet metal, replace it with a riveting hammer. The structure of the riveting hammer is that there is a concave hole in the middle. If it is necessary to remove the rivet head, it is necessary to impact the hammer head. The structure is that a pointed shaft impacts the rivet hole. If it is necessary to knock, replace it with a knocking hammer head, and its structure is that the hammer head is a flat surface for evenly applying force to the workpiece contact surface.

[0025] Embodiment 2, as shown in Figure 2 the front view, Figure 6 the two-view structure of the hammer head (6) can be seen. The hammer head (6) is screwed and tightened with the cylinder block (4). When there is a rivet head and it needs to be removed, the hook of the hammer head (6) can hold the rivet head at an angle. The overall hammer is a lever structure. By pressing the handle, the rivet can be removed. The structure of the hammer head (6) can be set to a pointed head or a flat head. For different workpieces, manual assistance can be set, and then the hammer head (6) can be removed to meet the needs of narrow spaces.

[0026] The working principle and control process of the present invention are as follows: The motor is connected in series with a switch and a battery to form a circuit for controlling the motor. The shaft gear of the motor drives the torque-increasing gear. After the diameter changes, the torque-increasing gear is superimposed on the semi-circular gear, and the power is synchronized with the semi-circular gear teeth. The semi-circular gear teeth drive the straight teeth of the piston hammer to do compression work. The piston hammer compresses the nitrogen gas in the cylinder block. Nitrogen is a stable inert gas with the characteristics of a large compression elastic potential energy and low energy damage. After the semi-circular gear teeth pass through the rotating half shaft, they separate from the straight teeth of the piston hammer. The piston hammer is affected by the potential energy of the compressed nitrogen gas and makes a recovery movement, thus hitting the hammer head. The hammer head is attached to the surface of the workpiece, so as to achieve the knocking effect. These two strokes, repeated movements, are the function of continuous knocking. At the same time, an overload protection is set in series in the motor control circuit, and a vibration sensor module is built into the handle. When the impact energy of the piston hammer does not act on the workpiece, vibration will be generated, resulting in the power-off of the vibration sensor module, playing a role in protecting the overload condition.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aviation sheet metal rivet hammer, characterized in that The invention comprises a motor (1), a speed reduction conversion gear (2), a spur-tooth piston hammer (3), a cylinder body (4), a hammer head (5), a hammer horn (6), a hammer housing (7), and a battery pack (8). The gear shaft of the motor (1) and the speed reduction conversion gear (2) are engaged with the gears of the spur-tooth piston hammer (3) to transfer the torque of the steering transmission, the semicircular gear of the speed reduction conversion gear (2) and the spur-tooth piston hammer (3) are engaged with the spur teeth to reciprocate, the piston head of the spur-tooth piston hammer (3) is movably connected with the piston of the cylinder sleeve of the cylinder body (4), and a nitrogen cavity is arranged in the compression cylinder body (4), the spur-tooth piston hammer (3) compresses the potential energy to strike the hammer horn (6) to perform work, the cylinder body (4) and the hammer housing (7) are integrally connected with the built-in battery pack (8), the hammer head (5) is slidably connected with the cylinder body (4), and the hammer horn (6) is threadedly fastened to the cylinder body (4).

2. According to claim 1, it is characterized in that: The speed reduction conversion gear (2) is provided with a full-circle steering gear (201) and a semi-circle reciprocating gear (202), and the two gears are superimposed and fastened with nuts.

3. According to claim 1, it is characterized in that: The straight-tooth piston hammer (3) is provided with an impact head and a piston ring (302), and a side surface is provided with straight teeth (301).

4. According to claim 1, it is characterized in that: The cylinder body (4) is provided with a nitrogen cylinder body (403), a hammer head (5) mounting lock groove (401), a hammer housing (7) thread (404), a hammer angle (6) thread (402), a slide groove (405) of a straight tooth piston hammer (3), and a charging hole (406) at the top.

5. According to claim 1, it is characterized in that: The motor (1) is electrically connected to a switch, and a cavity is built into the hammer housing (7), through which the batteries of the battery pack (8) are connected in series.

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