Special-shaped lug clamp

Abstract

The utility model discloses a special-shaped lug clamp which comprises a bottom plate used for being connected with an A shaft of a machine tool, a positioning block is arranged on the bottom plate, an upper end face and a front end face are tightly attached to a workpiece and are fixed through fasteners, and a pressing device is further arranged on the upper end face of the positioning block. Through the design of the positioning block on the bottom plate and the tight fit between the upper end face and the front end face of the positioning block and the workpiece, the accurate positioning of the workpiece in the machining process is ensured. The upper end face and the front end face of the positioning block are tightly attached to the workpiece and fixed through the fastener, so that the overall stability of the clamp is enhanced, vibration in the machining process is reduced, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to a special-shaped ear piece clamp, belonging to the technical field of clamps. Background Art

[0002] With the rapid development of modern manufacturing, special-shaped parts are increasingly used in fields such as aviation, aerospace, automotive, and mold manufacturing. These parts often have complex geometries, strict dimensional requirements, and high surface quality standards, posing significant challenges to traditional machining methods. To meet these demands, multi-axis machining technology has emerged.

[0003] Fixtures play a crucial role in the machining of irregular-shaped parts on multi-axis machine tools. These parts often have unique geometric features, such as irregular surfaces, complex internal structures, or specialized machining requirements. Traditional fixtures are often designed for standardized, regular workpieces and are unable to adapt to the specific needs of irregular-shaped parts.

[0004] Therefore, in order to ensure the machining accuracy and efficiency of special-shaped parts on multi-axis machine tools, special fixtures need to be designed to meet these special requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a special-shaped ear piece clamp to solve the above-mentioned problems, which can clamp and position the ear piece with an L-shaped end so that it can be assembled on a machine tool.

[0006] The technical solution adopted by the utility model is as follows: a special-shaped ear clamp, including a base plate for connecting to the A-axis of a machine tool, a positioning block is provided on the base plate, the upper end face and the front end face of the positioning block are tightly attached to the workpiece and fixed by fasteners, and the upper end face of the positioning block is also provided with a clamping device; the clamping device includes a clamping block, and the clamping block is connected to the positioning block by a connecting bolt.

[0007] Optionally, a plurality of connection grooves are provided on the bottom plate at intervals along the circumferential direction, and the connection grooves extend radially.

[0008] Optionally, the pressing block is L-shaped, with the bent end of the pressing block facing downward.

[0009] Optionally, the middle portion of the positioning block has a cavity that passes through from left to right.

[0010] Optionally, the upper end surface of the positioning block is provided with a first connecting hole, the first connecting hole is communicated with the cavity, and a first bolt is provided in the first connecting hole and is screwed upward from the cavity.

[0011] Optionally, a pin hole is provided on the front end surface of the positioning block, and a positioning pin is provided in the pin hole.

[0012] Optionally, a second connecting hole is provided on the front end surface of the positioning block, the second connecting hole is communicated with the cavity, and a second bolt is provided in the second connecting hole and is screwed forward from the cavity.

[0013] Optionally, the positioning block is provided with a screw-on groove, and the screw-on groove is arranged behind the second connecting hole.

[0014] Optionally, the number of the pin holes and the number of the second connecting holes are both two, and the pin holes and the second connecting holes are spaced apart and distributed along the four corners of the square.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. This utility model provides a special-shaped lug fixture that ensures precise positioning of the workpiece during machining through the design of a positioning block on the base plate and the close fit of its upper and front faces with the workpiece. The upper and front faces of the positioning block are in close contact with the workpiece and secured with fasteners. This structural design enhances the overall stability of the fixture, reduces vibration during machining, and improves machining quality.

[0017] 2. The special-shaped lug fixture provided by the present invention can adapt to special-shaped lugs of different shapes and sizes, thereby improving the versatility and adaptability of the fixture. This simplifies the workpiece clamping process, makes operation more convenient, reduces clamping time, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the assembly front view of the utility model.

[0019] Figure 2 It is an assembly left view of the utility model.

[0020] Figure 3 This is the main view of the positioning block.

[0021] Figure 4 This is the right view of the positioning block.

[0022] Markings in the figure: 1-base plate, 2-positioning block, 21-first connecting hole, 22-pin hole, 23-second connecting hole, 24-screw groove, 3-first bolt, 4-positioning pin, 5-pressing device, 6-second bolt. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings.

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] A special-shaped ear fixture, such as Figure 1-4 As shown, it includes a base plate 1 for connecting the A-axis of the machine tool, a positioning block 2 is provided on the base plate 1, the upper end face and the front end face of the positioning block 2 are tightly attached to the workpiece and fixed by fasteners, and the upper end face of the positioning block 2 is also provided with a clamping device 5; the clamping device 5 includes a clamping block, and the clamping block is connected to the positioning block 2 by a connecting bolt.

[0026] Specifically, the base plate 1 is used to connect to the A-axis of the machine tool, allowing the fixture to rotate with the A-axis to achieve rotational positioning or processing of the workpiece. The positioning block 2 is set on the base plate 1 and matches the specific shape of the workpiece to achieve precise positioning. The upper end face and front end face of the positioning block 2 contact the workpiece, forming a double-sided positioning, which improves positioning accuracy. Fasteners are used to fix the position of the workpiece on the positioning block 2 to prevent movement during processing. The clamping device 5 is located on the upper end face of the positioning block 2 and is used to apply additional pressure to the workpiece to ensure that the workpiece is in close contact with the positioning block 2 to prevent vibration during processing. Specifically, the machine tool can be a four-axis machining center or a five-axis machining center with a rotating axis that can perform tilting processing and can process parts with complex curved surfaces. The clamping block applies pressure to the workpiece to ensure that the workpiece remains fixed and does not move during processing. Connecting bolts are used to connect the clamping block to the positioning block 2. By rotating the connecting bolts, the pressure of the clamping block on the workpiece can be adjusted. In addition, the clamping block connected with bolts can be quickly assembled and disassembled, facilitating the replacement of workpieces and adjustment of the fixture.

[0027] As another specific embodiment, the base plate 1 is provided with a plurality of radially extending connecting grooves spaced circumferentially. The connecting grooves enable connection between the base plate 1 and the A-axis via connectors. Furthermore, since the connecting grooves extend radially, they can accommodate installation at various diameters, improving adaptability.

[0028] In another specific embodiment, the clamping block is L-shaped, with the bent end of the clamping block facing downward. This bent portion is positioned below the workpiece, providing additional support during machining. Furthermore, the bent end is flush with the workpiece, ensuring that when the clamping block applies pressure, the clamping portion remains parallel to the upper surface of the workpiece without tilting, thereby providing uniform support and compression.

[0029] As another specific embodiment, the middle portion of the positioning block 2 has a cavity extending therethrough. This can reduce the overall weight of the positioning block 2, making it easier to operate and move. Furthermore, the cavity can facilitate the assembly of fasteners.

[0030] In another specific embodiment, the upper end surface of the positioning block 2 is provided with a first connection hole 21, which communicates with the cavity. A first bolt 3 is disposed within the first connection hole 21 and screws upward from the cavity. Specifically, the first bolt 3 connects to the upper portion of the workpiece. By screwing the bolt together, the upper portion of the workpiece is securely fixed to the positioning block 2, ensuring stability during machining. Furthermore, the first bolt 3 screws upward from the cavity, with its head located within the cavity, without obstructing the workpiece, thereby ensuring machining.

[0031] As another specific embodiment, the front end of the positioning block 2 is provided with a pin hole 22, within which a locating pin 4 is positioned. Specifically, the locating pin 4 positions the positioning block 2 and the rear portion of the workpiece. By inserting into a corresponding hole in the workpiece, the locating pin 4 positions the rear portion of the workpiece. This design ensures that the workpiece's position on the plane is fixed, preventing movement. The combination of the locating pin 4 and the pin hole 22 provides an auxiliary means of securing the workpiece, working in conjunction with other fixing elements (such as bolts and a clamping block) to ensure workpiece stability throughout the machining process.

[0032] As another specific embodiment, the front face of the positioning block 2 is provided with a second connection hole 23, which communicates with the cavity. A second bolt 6 is positioned within the second connection hole 23, threaded forward from the cavity. Specifically, the second bolt 6 engages the rear portion of the workpiece. By threading the bolt, the rear portion of the workpiece is securely fixed to the positioning block 2, ensuring stability during machining. Furthermore, the second bolt 6 engages forward from the cavity, with its head positioned within the cavity, without obstructing the workpiece, thereby ensuring machining.

[0033] As another specific embodiment, the positioning block 2 is provided with a screwing groove 24, which is located behind the second connection hole 23. The screwing groove 24 can be used to separately avoid the screwing position of the second bolt 6 without increasing the area of the cavity, thereby making the design of the positioning block 2 more compact.

[0034] In another specific embodiment, two pin holes 22 and two second connecting holes 23 are each provided, spaced apart along the four corners of a square. Specifically, two pin holes 22 are distributed along one diagonal, and two second connecting holes 23 are distributed along another diagonal. This symmetrical distribution of the pin holes 22 and second connecting holes 23 helps balance the forces acting on the workpiece and improve positioning stability. The diagonal distribution provides more uniform force distribution and reduces distortion caused by torque.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The present invention extends to any new features or any new combinations disclosed in this specification, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the detailed technical features not disclosed in this embodiment, such as the specific structure, connection method, etc., can be obtained by those skilled in the art from the prior art, and the present disclosed embodiment does not make specific limitations on this. Unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense.

Claims

1. A special-shaped ear clamp, characterized by: The invention comprises a base plate (1) for connecting to an A-axis of a machine tool, a positioning block (2) being provided on the base plate (1), the upper end face and the front end face of the positioning block (2) being in close contact with a workpiece and being fixed by a fastener, and a clamping device (5) being further provided on the upper end face of the positioning block (2); the clamping device (5) comprising a clamping block connected to the positioning block (2) by a connecting bolt.

2. The special-shaped ear piece clamp according to claim 1, characterized in that: A plurality of connection grooves are provided on the bottom plate (1) at intervals along the circumferential direction, and the connection grooves extend radially.

3. The special-shaped ear piece clamp according to claim 1, characterized in that: The pressing block is L-shaped, and the bent end of the pressing block faces downward.

4. The special-shaped ear piece clamp according to claim 1, characterized in that: The middle portion of the positioning block (2) has a cavity that passes through from left to right.

5. The special-shaped ear piece clamp according to claim 4, characterized in that: The upper end surface of the positioning block (2) is provided with a first connecting hole (21), the first connecting hole (21) is communicated with the cavity, and a first bolt (3) is provided in the first connecting hole (21) and is screwed upward from the cavity.

6. The special-shaped ear piece clamp according to claim 4, characterized in that: A pin hole (22) is provided on the front end surface of the positioning block (2), and a positioning pin (4) is provided in the pin hole (22).

7. The special-shaped ear piece clamp according to claim 6, characterized in that: A second connecting hole (23) is provided on the front end surface of the positioning block (2), the second connecting hole (23) is communicated with the cavity, and a second bolt (6) is provided in the second connecting hole (23) and is screwed forward from the cavity.

8. The special-shaped ear piece clamp according to claim 7, characterized in that: The positioning block (2) is provided with a screw-on groove (24), and the screw-on groove (24) is arranged behind the second connecting hole (23).

9. The special-shaped ear piece clamp according to claim 6, characterized in that: The pin holes (22) and the second connection holes (23) each comprise two, and the pin holes (22) and the second connection holes (23) are distributed at intervals along the four corners of the square.

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