A compacting rod small chord length arc milling device

Abstract

The utility model belongs to the field of mechanical processing technology, and discloses a clamping rod small chord length circular arc milling device, including a support plate, a positioning mandrel, a clamping cover, a support shaft, and an anti-rotation pin; the support plate is a circular flat plate structure, with a plurality of evenly distributed U-shaped grooves on its edge, a positioning mandrel mounting hole at the center, and a support shaft mounting hole at the eccentric position; one end of the positioning mandrel is arranged in the positioning mandrel mounting hole, and the other end is sleeved with a clamping cover; the through hole of the clamping rod to be processed is sleeved on the positioning mandrel, and its end face is pressed on the support plate by the clamping cover; one end of the support shaft is arranged in the support shaft mounting hole, and the other end is supported on the L-shaped support surface of the clamping rod to be processed. The utility model has a simple structure, is easy to operate, uses a pure mechanical structure, has good clamping stability, and can meet the dimensional accuracy, form and position tolerance and surface quality requirements of the small chord length circular arc.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a small-chord-length arc milling device for a clamping rod. Background Art

[0002] The clamping rod is often used for the connection and locking of the interfaces, valves, flanges and other parts of engineering machinery. The clamping rod structure is an L-shaped hollow body structure with a circular arc, and a through hole is set in the middle, such as Fig.10 , Fig.11 As shown in the figure, the arc is located on the misaligned end face, the center of gravity is inclined, the arc chord length is small (radius angle <120°) and the thickness is large (about 2.5 times the radius of the arc), and there is a parallelism requirement with the internal reference through hole of the part. During the milling process of the small chord length arc, the clamping and fixing methods are flat-nose pliers, open sleeves, etc. Due to the particularity of the inclined center of gravity structure, its clamping stability is poor, and it is often accompanied by the heavy end of the small chord length arc of the workpiece tilting downward due to inadequate adjustment of the center of gravity and poor firmness of the clamping contact part, and the overall slight rotation displacement of the workpiece, which results in taper angle, center offset, local overcutting, etc. in the thickness direction of the small chord length arc after processing, which ultimately leads to unsatisfactory dimensional accuracy, form and position tolerance and surface quality of the small chord length arc. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the conventional clamping process of the small chord arc milling of the clamping rod causes the problems of taper angle, center deviation and local overcut in the thickness direction.

[0004] In order to solve the above technical problems, the specific technical solutions of the utility model are as follows:

[0005] A small-chord-length circular arc milling device for a clamping rod, comprising a support plate, a positioning mandrel, a clamping cover, a support shaft, and an anti-rotation pin; the support plate is a circular flat plate structure, with a plurality of evenly distributed U-shaped grooves on its edge, a positioning mandrel mounting hole at the center, and a support shaft mounting hole at the eccentric position; one end of the positioning mandrel is arranged in the positioning mandrel mounting hole, and the other end is sleeved with a clamping cover; the through hole of the clamping rod to be processed is sleeved on the positioning mandrel, and its end face is pressed against the support plate by the clamping cover; one end of the support shaft is arranged in the support shaft mounting hole, and the other end is supported on the L-shaped supporting surface of the clamping rod to be processed; an anti-rotation pin is also arranged in the positioning mandrel mounting hole; the two end faces of the clamping rod to be processed are parallel to the two end faces of the support plate.

[0006] Wherein, the positioning core shaft and the supporting plate are interference fit.

[0007] Among them, a support shaft mounting hole is designed corresponding to the clamping rod part close to the arc portion of the small chord length.

[0008] Wherein, the support shaft mounting hole is a threaded hole.

[0009] Among them, the positioning core shaft is a stepped shaft structure, a positioning hole is set in the middle to match the clearance of the internal through hole of the clamping rod part, one end is concentrically connected with the support plate, and the other end is set with an external thread structure smaller than the middle diameter for connecting with the clamping cover.

[0010] Among them, the clamping cover is a stepped end cover structure with internal threads, and the small end is designed as a uniformly distributed symmetrical plane structure for easy disassembly and assembly, and is threadedly connected to the positioning core shaft.

[0011] Among them, the supporting shaft is a full-threaded stepped shaft structure.

[0012] The utility model has the following advantages: simple structure, convenient operation, pure mechanical structure, good clamping stability, and can meet the requirements of dimensional accuracy, shape and position tolerance and surface quality of small chord length arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a small chord length arc milling device for a clamping rod of the utility model;

[0014] Figure 2 for Figure 1 Left view of

[0015] Figure 3 It is the left view of the support plate;

[0016] Figure 4 is a cross-sectional view of the support plate;

[0017] Figure 5 This is the main view of the positioning mandrel;

[0018] Figure 6 It is the left side view of the clamping cover;

[0019] Figure 7 It is the front view of the clamping cover;

[0020] Figure 8 It is the left view of the support shaft;

[0021] Fig. 9 This is the main view of the support shaft;

[0022] Fig.10 It is a schematic diagram of the structure of the clamping rod;

[0023] Fig.11 for Fig.10 Right view. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 , Figure 2 As shown, the small-chord-length arc milling device for a clamping rod of the utility model comprises a support plate 1, a positioning mandrel 2, a clamping cover 3, a support shaft 4, and an anti-rotation pin 5.

[0026] like Figure 3 , Figure 4 As shown, the support plate 1 is a flat plate structure with a U-shaped groove and a mounting hole system. The upper and lower surfaces of the flat plate have high flatness requirements and are parallel to each other. The positioning mandrel mounting hole is coaxially distributed in the center, and has a small interference fit with the positioning mandrel 2 and is parallel to the upper and lower planes (the two end faces of the part to be processed are parallel to the upper and lower planes of the support plate). The support shaft 4 mounting hole is designed corresponding to the clamping rod part close to the small chord arc, and is threaded for easy local adjustment. The external design is evenly distributed with U-shaped grooves for reliable connection with the equipment work surface.

[0027] like Figure 5 As shown, the positioning core shaft 2 is a stepped shaft structure, the middle positioning hole and the internal reference through hole of the clamping rod part are matched with a small clearance, the bottom is concentrically connected with the support plate 1 with a small interference fit and the mounting surface is vertical, and the top is designed with an external thread structure smaller than the middle diameter, which is used to connect with the clamping cover 3 to play a tightening role.

[0028] like Figure 6 , Figure 7 As shown, the clamping cover 3 is a stepped end cover structure with internal threads, and the small end is designed to be a uniformly distributed symmetrical plane structure for easy disassembly and assembly, and is threadedly connected to the positioning core shaft 2

[0029] like Figure 8 , Fig. 9 As shown, the support shaft 4 is a fully threaded stepped shaft structure, which is threadedly connected to the mounting hole of the support plate 1, and the top is a stepped shaft. The flat surface contacts the small chord arc support surface of the clamping rod part, playing a supporting role; the anti-rotation pin 5 is a tapered pin structure, a standard fastener, which is installed during the assembly stage to limit the rotational movement of the support plate 1 and the positioning core shaft 2.

[0030] Working process

[0031] (1) Assemble the small chord length arc milling device according to the assembly drawing, install the anti-rotation pin 5, and then it can be used for milling the small chord length arc of the clamping rod part;

[0032] (2) Before milling, place the support plate 1 with the bottom surface facing downward and close to the equipment workbench, and use screws and pressure plates to reliably connect the small chord length arc milling device to the equipment through the U-shaped groove;

[0033] (3) Remove the clamping cover 3 of the small chord length arc milling device, adjust the height of the support shaft 4 to be close to and lower than the height of the small chord length arc support surface of the clamping rod part, place the small diameter rotating end face of the clamping rod part downward and close it, and combine the internal reference through hole with the positioning hole in the middle of the positioning core shaft 2;

[0034] (4) Screw the clamping cover 3 into the external thread of the positioning mandrel 2 and pre-tighten it. Adjust the height of the bearing shaft 4 until the small chord arc support surface of the clamping rod part is fully in contact with it, and tighten the positioning mandrel 2 into place.

[0035] (5) At this point, the clamping rod parts are clamped and the cutting process of the small chord length arc can be carried out.

[0036] The compacting rod small chord length arc milling device of this embodiment has a simple structure and is easy to operate. It uses a purely mechanical structure and has good clamping stability, and can meet the dimensional accuracy, form and position tolerance and surface quality requirements of the small chord length arc.

[0037] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these modifications and improvements should also be considered to belong to the protection scope of the present invention.

Claims

1. A compaction rod small chord length arc milling device, characterized in that: It includes a support plate, a positioning mandrel, a clamping cover, a support shaft, and an anti-rotation pin; The support plate is a circular flat plate structure with a plurality of evenly distributed U-shaped grooves on its edge, a positioning core shaft mounting hole at the center, and a support shaft mounting hole at the eccentric position; one end of the positioning core shaft is arranged in the positioning core shaft mounting hole, and the other end is sleeved with a clamping cover; the through hole of the clamping rod to be processed is sleeved on the positioning core shaft, and its end face is pressed against the support plate by the clamping cover; one end of the support shaft is arranged in the support shaft mounting hole, and the other end is supported on the L-shaped supporting face of the clamping rod to be processed; an anti-rotation pin is also arranged in the positioning core shaft mounting hole; the two end faces of the clamping rod to be processed are parallel to the two end faces of the support plate.

2. The compaction rod small chord length arc milling device according to claim 1, characterized in that: The positioning mandrel and the support plate are interference fit.

3. The compaction rod small chord length arc milling device according to claim 1, characterized in that: A support shaft mounting hole is designed corresponding to the clamping rod part close to the arc portion with a small chord length.

4. The compaction rod small chord length arc milling device according to claim 3, characterized in that: The support shaft mounting hole is a threaded hole.

5. The compaction rod small chord length arc milling device according to claim 1, characterized in that: The positioning core shaft is a stepped shaft structure, with a positioning hole in the middle that matches the clearance of the internal through hole of the clamping rod part. One end is concentrically connected to the support plate with an interference fit, and the other end is provided with an external thread structure smaller than the middle diameter for connection with the clamping cover.

6. The compaction rod small chord length arc milling device according to claim 5, characterized in that: The clamping cover is a stepped end cover structure with internal threads, and the small end is designed as a uniformly distributed symmetrical plane structure for easy disassembly and assembly, and is threadedly connected to the positioning core shaft.

7. The compaction rod small chord length arc milling device according to claim 1, characterized in that: The supporting shaft is a fully threaded stepped shaft structure.

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