Dual-purpose structural clamp compatible with turning and milling

Abstract

The utility model relates to a structural clamp compatible with turning and milling dual purposes, which is based on processing of a protective cover, completes processing of concentric excircles and inner holes in the axial direction and processing of inner holes and kidney-shaped holes in the radial direction, and comprises a clamp body, and a main body base plate of the clamp body is characterized by a large excircle. One side of the large outer circle feature is provided with a step circle feature concentric with the large outer circle feature, and the other side of the large outer circle feature is provided with an eccentric concave step hole feature; the axial eccentric hole of the clamped protective cover is assembled in the stepped hole and is assembled in a combined positioning mode through the positioning column, the inner hexagon screw and the pin, and due to eccentric structure assembly, it is guaranteed that the axial eccentric hole in the protective cover just falls in the dead center of the large outer circle of the clamp body during positioning installation. And a balance block is arranged on one side of the transverse central axis of the stepped hole characteristic. According to the structure clamp, it is guaranteed that a protective cover part is clamped in the turning process and the milling process, the machining technology of two types of work is achieved, and meanwhile it is guaranteed that the quality of products is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing and manufacturing, in particular to a structural fixture compatible with turning and milling. Background Art

[0002] In machining, we often encounter parts that are complex to process and require multiple steps to complete. Furthermore, clamping is inconvenient, and conventional clamping methods cannot achieve the desired results.

[0003] For a protective cover part with demanding requirements in both axial and radial directions, a lathe is primarily used to machine the concentric outer diameters and inner holes in the axial direction. A horizontal machining center then processes the radial inner and girdle holes. Finally, a lathe completes the machining of the axial eccentric holes. Because the right end of the part is thin, measuring only (71-65) / 2 = 3mm on one side, direct clamping during machining of the axial eccentric holes on the lathe and the radial holes on the horizontal machining center would cause deformation of the outer diameter and inner hole at that location. Furthermore, the three axial eccentric holes cannot be machined by directly clamping the right end outer diameter on the lathe. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a structural clamp compatible with both turning and milling. The structural clamp is based on the processing of the protective cover and takes into account the completion of the processing of the axial concentric outer circles and inner holes, and the processing of the radial inner holes and waist circular holes. It includes a clamp body, and the main substrate of the clamp body is a large outer circle feature, and one side of the large outer circle feature is provided with a step circle feature concentric therewith, and the other side is provided with an eccentric concave step hole feature; the axial eccentric hole of the clamped protective cover is assembled in the step hole feature, and is positioned and assembled by a combination of a positioning column, a hexagon socket screw, and a pin. Because it is an eccentric structural assembly, it is ensured that the axial eccentric hole on the protective cover falls exactly on the center of the large outer circle of the clamp body during positioning and installation, and a balancing block is provided on one side of the transverse center axis of the step hole feature;

[0005] After the protective cover is assembled on the clamp body, a fixing device is provided on the outer circular surface of the protective cover and in the vertical direction of the clamp body, including a latch fixing block, a positioning latch, a spring I, a stop pin, and a handle pin. One end of the latch fixing block is assembled with a positioning hole provided on the large outer circular feature through an axial hole, and the other end is provided with a through hole, and a positioning latch is installed in the through hole. The positioning latch is sleeved with a spring I, a stop pin, and a handle pin.

[0006] At the same time, a pressure plate is provided at the end face of the protective cover, so that the fixture limits the freedom of the protective cover in the height direction z axis, and the pressure plate and the large outer circle feature are assembled by stud bolts and spring II.

[0007] In one embodiment of the present invention, the step circle feature is connected to the rotation center of the worktable of the machine tool.

[0008] In one embodiment of the present invention, the balancing weight is connected to the large outer circle feature via a hexagon socket screw.

[0009] In one embodiment of the present invention, there are three groups of fixing devices, which are evenly arranged along the circumference of the step hole feature, and the angle between the center lines of each two adjacent groups of fixing devices is 120°.

[0010] In one embodiment of the present invention, the positioning pin is clearance-fitted with the through hole of the pin fixing block, and combined with the provided spring I, the protective covers of different diameters can be clamped and assembled.

[0011] The above technical solution of the present invention has the following advantages over the prior art: the structural fixture described in the present invention ensures that the protective cover parts are clamped in the turning and milling processes, and solves the processing technology of the two types of work, while ensuring stable and reliable product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0013] Figure 1 This is a side view of the structural fixture of the utility model that is compatible with both turning and milling;

[0014] Figure 2 It is a cross-sectional view of the structural clamp of the utility model.

[0015] As shown in the figure, 1. Clamp body, 2. Latch fixing block, 3. Positioning latch, 4. Pressure plate, 5. Balance block. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, this embodiment provides a structural fixture that is compatible with both turning and milling. The structural fixture is based on the processing of the protective cover and takes into account the processing of the axial concentric outer circles and inner holes, and the processing of the radial inner holes and waist circular holes. It includes a clamping body. The main substrate of the clamping body 1 is a large outer circle feature, and one side of the large outer circle feature is provided with a step circle feature concentric therewith, wherein the step circle feature is connected to the rotation center of the worktable of the machine tool; and the other side is provided with an eccentric concave step hole feature; the axial eccentric hole of the clamped protective cover is assembled in the step hole feature, and is positioned and assembled by a combination of positioning columns, hexagon socket screws, and pins. Because it is an eccentric structural assembly, it is ensured that the axial eccentric hole on the protective cover falls exactly on the center of the large outer circle of the clamping body during positioning and installation. At the same time, a balancing block 5 is provided on one side of the transverse center axis of the step hole feature; and the balancing block 5 is connected to the large outer circle feature through the hexagon socket screw.

[0017] After the protective cover is assembled on the clamp body 1, a fixing device is provided on the outer circular surface of the protective cover and in the vertical direction of the clamp body 1, wherein the fixing device is provided in three groups, which are evenly arranged along the circumference of the step hole feature, and the angle between the center lines of each two adjacent groups of fixing devices is 120°; it includes a latch fixing block 2, a positioning latch 3, a spring I, a stop pin, and a handle pin, wherein one end of the latch fixing block 2 is assembled with the positioning hole provided on the large outer circular feature through an axial hole, and the other end is provided with a through hole, and a positioning latch 3 is installed in the through hole, and the positioning latch 3 is sleeved with a spring I, a stop pin, and a handle pin; the positioning latch 3 is clearance-fitted with the through hole of the latch fixing block 2, and combined with the provided spring I, it can realize the clamping and assembly of protective covers of different diameters.

[0018] At the same time, a pressure plate 4 is provided at the end face of the protective cover, so that the clamp limits the freedom of the protective cover in the height direction z axis. The pressure plate 4 and the large outer circle feature are assembled by stud bolts and spring II.

[0019] The structure of the clamp described in this embodiment is that the outer circle of the clamp body 1 is concentric with the right step circle, and the left step hole is designed to be eccentric according to the position of the axial eccentric hole on the protective cover, ensuring that the axial eccentric hole on the protective cover falls exactly at the center of the outer circle of the clamp body during positioning and installation. A balance block 5 is designed on the right side of the clamp body to ensure that the weight on both sides is evenly distributed during turning. The part passes through the right side. The inner hole is connected to the positioning column and is positioned and installed in the left step hole of the clamp body 1.

[0020] When milling radial inner holes and waist round holes in horizontal position, clamp the step circle on the right end of the clamp body 1 to the center of the workbench rotation, and fasten the parts with pressure plates, bolts and positioning columns. Then find the center of the part, and the milling of radial inner holes and waist round holes can be realized. At the same time, use the 16 square holes on the right outer circle to mill a hole in the center of one of the square holes. The process positioning hole is made to ensure that the process hole is in the same axial plane as the M12×1.5-7H threaded hole and is correctly positioned with the three 3.1×6 waist-shaped holes. A 15×Ф5 threading hole is drilled in the center of the other 15 square holes to facilitate the final wire cutting of the 16 square holes on the part.

[0021] When machining the axial eccentric holes on the lathe, use the dividing head to clamp the step circle on the right end of the clamping body 1, and the workpiece is Position it on the fixture, and then use the pressure plate, bolts and positioning columns to fasten the parts. Upper process hole The pin is positioned to process the first eccentric hole, then the pressure plate is loosened and the process hole on the rotating part is formed. Go to the second pin (120 degrees away from the first pin) to locate and process the second eccentric hole, and then locate and process the third eccentric hole in the same way.

[0022] Through the above utility model, the problem of difficult clamping of protective cover parts in the turning and milling processes is successfully solved. It is reliable and convenient to use, and also ensures the processing quality of the product.

[0023] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A structural fixture compatible with both turning and milling, which can complete the machining of axial concentric outer circles and inner holes, and the machining of radial inner holes and waist-round holes based on the machining of the protective cover, characterized in that: The invention comprises a clamping body, wherein the main substrate of the clamping body (1) is a large outer circle feature, and a step circle feature concentric with the large outer circle feature is provided on one side thereof, and an eccentric concave step hole feature is provided on the other side thereof; the axial eccentric hole of the clamped protective cover is assembled in the step hole feature, and is positioned and assembled by a combination of a positioning column, a hexagon socket screw, and a pin. Because it is an eccentric structure assembly, it is ensured that the axial eccentric hole on the protective cover falls exactly at the center of the large outer circle of the clamping body during positioning and installation, and a balancing block (5) is provided on one side of the transverse center axis of the step hole feature; After the protective cover is assembled on the clamp body (1), a fixing device is provided on the outer circular surface of the protective cover and in the vertical direction of the clamp body (1), including a latch fixing block (2), a positioning latch (3), a spring I, a stop pin, and a handle pin, wherein one end of the latch fixing block (2) is assembled with a positioning hole provided on the large outer circular feature through an axial hole, and the other end is provided with a through hole, and the positioning latch (3) is installed in the through hole, and the positioning latch (3) is sleeved with a spring I, a stop pin, and a handle pin; At the same time, a pressure plate (4) is provided at the end face of the protective cover, so that the clamp limits the freedom of the protective cover in the height direction z axis, and the pressure plate (4) and the large outer circle feature are assembled through stud bolts and spring II.

2. The structural fixture according to claim 1, characterized in that: The step circle feature is connected to the worktable rotation center of the machine tool.

3. The structural fixture according to claim 1, characterized in that: The balancing block (5) is connected to the large outer circle feature via a hexagon socket screw.

4. The structural fixture according to claim 1, characterized in that: There are three groups of fixing devices, which are evenly arranged along the circumference of the step hole feature, and the angle between the center lines of each two adjacent groups of fixing devices is 120°.

5. The structural fixture according to claim 1, characterized in that: The positioning latch (3) is clearance-matched with the through hole of the latch fixing block (2), and can realize the clamping and assembly of protective covers with different diameters in combination with the provided spring I.

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