Multifunctional ball head dilator

Abstract

The utility model provides a multifunctional ball head expander which is simple in structure, convenient to use and convenient and fast to assemble. The multifunctional ball head expander is composed of a handle and at least two ball head cutters, the handle is formed by oppositely and crossly connecting two same handles, the centers of the two sides of the handle are connected with the ball head cutters, and the ball head cutters are connected and fixed through a screw rod. A ball head is arranged on one side of each ball-end cutter, a cutting groove is formed in the center of the ball head, and a cutting edge is formed on the edge of the cutting groove. And a connector is arranged on the other side of the ball-end cutter. Grooves and jacks are arranged in the two handles. The insertion hole is detachably connected with a connector of the ball-end cutter, and a groove is used for rotating a ball-end connecting rod or a pull rod for connection or disassembly. When an error exists in the matching of the ball head and the round hole of the ball head connecting rod, a proper ball head cutter is sleeved in the round hole to enable the cutting edge to quickly cut the inner surface of the round hole, so that the round hole reaches the size matched with the ball head, and the ball head is precisely matched with the round hole of the ball head connecting rod.

Description

Technical Field

[0001] The utility model relates to the field of remote-controlled helicopters, in particular to the technical field of special tools for assembling remote-controlled helicopters. Background Art

[0002] To assemble and repair a remote control helicopter, tools such as wrenches, screwdrivers, and pliers are needed. These tools can generally be used to assemble and repair remote control helicopters. However, people always hope to assemble or repair a remote control helicopter with good performance and stable flight. In addition to careful assembly or maintenance, the assembly tools used are also very important. It is difficult to assemble a remote control helicopter with good matching between parts using these common tools. Because the matching requirements of some parts in the remote control helicopter are very precise, they have zero tolerance or close to zero tolerance matching. It is impossible to assemble such zero tolerance or close to zero tolerance matching requirements with general tools. For example, the matching between the ball head connecting rod parts in the cross plate mechanism of the remote control helicopter has zero tolerance. For the assembly of the connection between the ball head connecting rod parts, special tools must be used to assemble. For this reason, special tools for assembling remote control helicopters are indispensable. Only with special tools can the tolerance requirements of the connection and matching between parts be assembled. At the same time, using special tools when repairing remote control helicopters will also improve maintenance efficiency, shorten maintenance time, and improve maintenance quality. Use special tools to assemble or repair remote-controlled helicopters, so that the performance of remote-controlled helicopters is improved, thereby increasing the flight stability of remote-controlled helicopters. Summary of the invention

[0003] The utility model provides a multifunctional ball head expander which has a simple structure, is easy to use and can be assembled conveniently.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional ball head expander, which includes a handle and at least two ball head knives. The handle is composed of two identical handles cross-connected, and the center part of one side of the handle is connected to a ball head knife, and the center part of the other side is connected to a ball head knife, and the ball head knives are connected by a screw.

[0005] Preferably, each of the ball-end cutters is provided with a ball head on one side, a cutting groove is provided at the radial center of the ball head, the edge of the cutting groove is a cutting edge, a circular hole is provided at the axial center of the ball head, and a connector is provided on the other side of the ball-end cutter.

[0006] Preferably, raised portions are provided on the upper and lower surfaces of the flat plate in each of the handles in a cross-shaped distribution, and grooves which are wide outside and narrow inside are provided on the flat plate between the raised portions. A through hole is provided at the center of the flat plate of the handle, and a connector is provided on the outer side surface of the raised portion. A recessed portion is provided between the raised portions, and the connector can be detachably connected to a connector in any ball-end cutter.

[0007] The beneficial effects of the utility model are as follows: the socket on the handle is convenient for connecting the ball head cutter, and the ball head cutter is selected according to the size of the round hole of the ball head connecting rod, and the ball head cutter cuts and modifies the round hole, and the ball head cutter can quickly cut and modify a suitable round hole, so that the round hole of the ball head connecting rod and the ball head of the ball head connecting rod can achieve zero tolerance fit. The groove provided on the handle can also quickly assemble and disassemble the ball head connecting rod or the pull rod. The multifunctional ball head expander is also equipped with at least three different sizes of ball head cutters, which is convenient for modifying the round holes of ball head connecting rods of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an overall schematic diagram of the utility model.

[0009] Figure 2 It is a schematic diagram of the structure of a ball-end cutter.

[0010] Figure 3 It is a schematic diagram of the structure of the handle.

[0011] Figure 4 It is a structural schematic diagram of a cross plate in an existing remote-controlled helicopter. DETAILED DESCRIPTION

[0012] like Figures 1 to 3 As shown, an embodiment of the multifunctional ball-end expander of the utility model is shown. The multifunctional ball-end expander 1 comprises a handle 2 and at least two ball-end knives 8, wherein the handle 2 is composed of two identical handles 2-1 which are cross-connected facing each other.

[0013] The upper surface 2-12 and the lower surface 2-13 of the flat plate 2-11 in each of the handles 2-1 are provided with raised portions 3 in a cross-shaped distribution, and grooves 4 which are wide outside and narrow inside are provided between the raised portions 3. A through hole 5 is provided in the center of the flat plate 2-1 of each of the handles 2-1, and a socket hole 6 is provided on the outer side surface of each of the raised portions 3, and a recessed portion 7 is provided between the raised portions 3.

[0014] A ball head 8-1 is provided on one side of the ball head cutter 8, a cutting groove 8-2 is provided in the radial center of the ball head 8-1, the edge of the cutting groove 8-2 is a cutting edge 8-20, a circular hole A8-3 is provided in the axial center of the ball head 8-1, and a connector 8-4 is provided on the other side of the ball head 8, a screw hole 8-5 is provided in the center of the connector 8-4, and the screw hole 8-5 is detachably connected to the screw rod 9.

[0015] Two handles are connected in a cross-connected manner, and the protrusion in one handle is inserted into the concave part in the other handle, so as to form a handle. A connector in a ball-end knife is inserted into the central through hole of one handle, and a connector in another ball-end knife is inserted into the central through hole of the other handle, and the screw holes in each ball-end knife are connected with a screw rod 9, so that the two handles and the two ball-end knives are fixed, or a ball-end knife is inserted into the connector hole provided in the protrusion of any flat plate in the handle, so as to form a multifunctional ball-end expander.

[0016] The multifunctional ball-end expander 1 is also equipped with spare ball-end cutters, namely, No. 0 ball-end cutter, No. 1 ball-end cutter, and No. 2 ball-end cutter, which are detachably connected to the central part of any side of the handle, and No. 0 ball-end cutter, No. 1 ball-end cutter, and No. 2 ball-end cutter are also detachably connected to the connector provided on the outer side of the raised part in the handle. Equipped with these three spare ball-end cutters, the multifunctional ball-end expander is more convenient to assemble or repair the remote-controlled helicopter. (These spare No. 0 ball-end cutters, No. 1 ball-end cutters, and No. 2 ball-end cutters are not shown in this embodiment).

[0017] like Figure 4 As shown, the ball head A21 in the cross disk mechanism 20 of the existing remote control helicopter is connected to the round hole 23 in the ball head connecting rod 22. At this time, the round hole 23 in the ball head connecting rod 22 and the ball head 21 are matched with zero tolerance. When there is an error in the size of the round hole and the ball head in the ball head connecting rod, the round hole in the ball head connecting rod must be modified. Generally, the size of the round hole in the ball head connecting rod is a negative tolerance. In this case, the round hole in the ball head connecting rod must be cut and modified with the ball head cutter in the multifunctional ball head expander. The multifunctional ball head expander is used in the following way: according to the size of the ball head, the round hole in the ball head connecting rod is modified by selecting the relative size of the ball head cutter. The connector of the ball head cutter is connected to the socket in the handle, and the ball head part of the ball head cutter is inserted into the round hole in the ball head connecting rod, so that the cutting edge of the cutting groove edge in the ball head part cuts and modifies the inner surface of the round hole, so that the round hole matching the ball head can be quickly cut and modified, so that the round hole and the ball head of the ball head connecting rod are precisely matched. The groove in the handle is used to turn the ball head connecting rod or connecting rod to connect or disassemble. (Some prior art is not shown here).

Claims

1. Multifunctional ball head expander, characterized by: The multifunctional ball-end expander comprises a handle and at least two ball-end knives. The handle is composed of two identical handles connected crosswise. A ball-end knife is connected to the center of one side of the handle, and a ball-end knife is connected to the center of the other side. The ball-end knives are connected by a screw.

2. The multifunctional ball-end expander according to claim 1, characterized in that: The ball end cutter and the No. 0 ball end cutter, the No. 1 ball end cutter and the No. 2 ball end cutter are provided with a ball head on one side, a cutting groove is provided in the radial center of the ball head, the edge of the cutting groove is a cutting edge, a circular hole is provided in the axial center of the ball head, and a connector is provided on the other side of the ball end cutter.

3. The multifunctional ball-end expander according to claim 1, characterized in that: The upper and lower surfaces of the flat plate in the handle are provided with raised parts distributed in a cross shape, the flat plate between the raised parts is provided with grooves that are wide outside and narrow inside, a through hole is provided in the center of the flat plate of the handle, a connecting hole is provided on the outer side of the raised part, and a recessed part is formed between the raised parts, and the connecting hole can be detachably connected to a connector in any ball-end knife.

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