Inner circle fine-tuning and tight-supporting device

Abstract

The embodiment of the utility model discloses an inner circle fine-tuning bracing device, which comprises a positioning cylinder, an inner circle fine-tuning bracing device, an outer circle fine-tuning bracing device and an inner circle fine-tuning bracing device, two ends of the positioning cylinder are respectively connected with the fixed flange ring and the clamping flange ring; one end of the adjusting rod penetrates through the fixed flange ring to enter the through cavity of the positioning cylinder, and the outer wall of the adjusting rod is in threaded connection with the inner wall of the positioning cylinder; one end of the clamping rod is fixedly connected with the clamping flange ring; the outer side of the adjusting rod and the outer side of the clamping rod are both in threaded connection with the adjusting heads, and the adjusting heads are used for clamping the two ends of a workpiece; the adjusting block and the adjusting rod are movably connected into the hole groove through a rotating shaft, one part is located in the positioning cylinder, the other part is located outside the positioning cylinder, and when the adjusting rod axially moves in the positioning cylinder, the adjusting block can move in the direction away from the axis. And the clamping efficiency is guaranteed, and the situation that the cylindrical workpiece deforms during machining is avoided.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to an inner circle fine-tuning and tightening device. Background Technology

[0002] In daily production and processing, for some thin-walled cylindrical parts with a large length-to-diameter ratio, if only the two ends of the workpiece are clamped when turning the outer diameter, the middle part of the cylinder will deform during turning due to lack of support. The finished workpiece often has problems such as out-of-tolerance roundness, deformation, and uneven wall thickness in the middle part, which makes it difficult to meet the technical requirements.

[0003] There is currently no effective solution to the above problems in existing technologies. Utility Model Content

[0004] To solve the above problems, this utility model provides an inner circle fine-tuning and tightening device, which clamps the two ends of the cylinder through adjustable adjustment heads at both ends, and then supports the inner wall of the cylinder through adjustment blocks, thereby solving the problem that the middle part of the cylinder is prone to deformation during the processing of the cylinder in the prior art.

[0005] To achieve the above objectives, this utility model provides an inner circle fine-tuning and clamping device, comprising: a positioning cylinder, which is axially penetrating and has a slot on its side wall; a fixing flange ring and a clamping flange ring respectively connected to both ends of the positioning cylinder; an adjusting rod, one end of which passes through the fixing flange ring and enters the penetrating cavity of the positioning cylinder, the outer wall of the adjusting rod being threadedly connected to the inner wall of the positioning cylinder; a clamping rod, one end of which is fixedly connected to the clamping flange ring; an adjusting head, both the outer side of the adjusting rod and the outer side of the clamping rod being threadedly connected to an adjusting head, the adjusting head being used to clamp both ends of the workpiece; and an adjusting block, the adjusting rod being movably connected to the slot via a rotating shaft, part of which is located inside the positioning cylinder and the other part is located outside the positioning cylinder, the adjusting block being moved away from the axis when the adjusting rod moves axially inside the positioning cylinder.

[0006] Further optionally, the adjusting rod includes a tapered rod portion and a straight rod portion; the tapered rod portion is frustum-shaped, and when its sidewall contacts the adjusting block, it can generate a thrust on the adjusting block; the outer wall of the straight rod portion is provided with threads, and the free end is provided with anti-slip texture.

[0007] Alternatively, the free end face of the adjusting rod may be provided with an adjusting groove.

[0008] Alternatively, the fixing flange ring and the positioning cylinder, and the clamping flange ring and the positioning cylinder are both connected by screws.

[0009] Alternatively, the sidewall of the fixed flange ring is provided with at least one adjustment hole.

[0010] Alternatively, the side of the adjusting head facing the positioning cylinder may be a conical surface.

[0011] Alternatively, the conical surface may be provided with multiple concentric anti-slip patterns.

[0012] Alternatively, the outer wall of the clamping rod is threaded, and the free end is provided with anti-slip texture.

[0013] Alternatively, one side of the adjusting block has a convex circular structure and the other side has a concave circular structure; the convex circular structure is located inside the positioning cylinder, and the concave circular structure is located outside the positioning cylinder.

[0014] Alternatively, the positioning cylinder may be provided with three slots evenly distributed, and a positioning block may be movably connected in each slot.

[0015] The above technical solution has the following beneficial effects: it can realize the clamping and support of the middle part of the inner circle when machining cylindrical workpieces, which is convenient and effective; it can realize automatic centering and automatic adaptation to the inner circle size of the workpiece when clamping the inner circle; it can realize the rapid tightening and loosening of the inner circle of the workpiece, which is convenient and quick; it has a simple structure, is easy to manufacture, and has strong universality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the inner circle fine-tuning and tightening device provided in this embodiment of the utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the positioning cylinder provided in an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the inner circle fine-tuning and tightening device provided in this embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjusting rod provided in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustment block provided in an embodiment of the present invention.

[0022] Reference numerals: 1-Adjusting rod; 101-Conical rod section; 102-Straight rod section; 103-Adjusting groove; 2-Fixing flange ring; 3-Adjusting head; 4-Positioning cylinder; 5-Adjusting block; 501-Concave circular structure; 502-Convex circular structure; 503-Shaft hole; 6-Clamping flange ring; 7-Clamping rod; 8-Rotating shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the problems of roundness deviation, deformation, and uneven wall thickness that easily occur during workpiece processing in existing technologies, this utility model provides an inner circle fine-tuning and tightening device. Figure 1 This is a three-dimensional structural diagram of the inner circle fine-tuning and tightening device provided in this embodiment of the utility model, as shown below. Figure 1 As shown, the device includes: a positioning cylinder 4, which is axially through and has a slot on its side wall; a fixing flange ring 2 and a clamping flange ring 6 are respectively connected to both ends of the positioning cylinder 4; an adjusting rod 1, one end of which passes through the fixing flange ring 2 and enters the through cavity of the positioning cylinder 4, and the outer wall of the adjusting rod 1 is threadedly connected to the inner wall of the positioning cylinder 4; a clamping rod 7, one end of which is fixedly connected to the clamping flange ring 6; an adjusting head 3, which is threadedly connected to both the outer side of the adjusting rod 1 and the outer side of the clamping rod 7, and is used to clamp both ends of the workpiece; and an adjusting block 5, which is movably connected to the slot via a rotating shaft 8, with one part located inside the positioning cylinder 4 and the other part located outside the positioning cylinder 4. When the adjusting rod 1 moves axially inside the positioning cylinder 4, it can move the adjusting block 5 away from the axis.

[0025] Figure 2 This is a three-dimensional structural diagram of the positioning cylinder provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the positioning cylinder 4 is axially continuous, and at least one slot is provided on its side wall, such as... Figure 1 As shown, a fixing flange ring 2 is connected to one end of the positioning cylinder 4, and a clamping flange ring 6 is connected to the other end. The diameters of both the fixing flange ring 2 and the clamping flange ring 6 are the same as those of the positioning cylinder 4.

[0026] The fixed flange has an opening in the middle, such as Figure 3As shown, one end of the adjusting rod 1 passes through the opening of the fixed flange and enters the through cavity of the positioning cylinder 4. The adjusting rod 1 extends into the outer wall of the positioning cylinder 4 and is threadedly connected to the inner wall of the positioning cylinder 4. Thus, the length of the adjusting rod 1 inside the positioning cylinder 4 can be controlled by rotating the adjusting rod 1. An adjusting head 3 is sleeved near the other end of the adjusting rod 1.

[0027] One end of the clamping rod 7 is fixedly connected to the clamping flange, and an adjusting head 3 is sleeved near the other end.

[0028] The adjusting block 5 is located in the slot, with part of it protruding from the outer wall of the positioning cylinder 4 and the other part protruding from the inner wall of the positioning cylinder 4. It is movably connected to the shaft hole 503 through the rotating shaft 8. When the adjusting rod 1 moves, it will provide support force to the adjusting block 5, so that the part of the adjusting block 5 located on the outer side of the positioning cylinder 4 can stably support the inner wall of the cylinder. At this time, the two adjusting heads 3 located on the adjusting rod 1 and the clamping rod 7 are respectively clamped at both ends of the cylinder.

[0029] As an optional implementation method, Figure 4 This is a schematic diagram of the structure of the adjusting rod provided in an embodiment of this utility model, as shown below. Figure 4 As shown, the adjusting rod 1 includes a tapered rod portion 101 and a straight rod portion 102; the tapered rod portion 101 is frustum-shaped, and when its side wall contacts the adjusting block 5, it can generate a thrust on the adjusting block 5; the outer wall of the straight rod portion 102 is provided with threads, and the free end is provided with anti-slip texture.

[0030] like Figure 4 As shown, the adjusting rod 1 includes an integrally formed tapered rod portion 101 and a straight rod portion 102. The tapered rod portion 101 is frustum-shaped, and its end extends into the through cavity of the positioning cylinder 4. The inclined sidewall of the tapered rod portion 101 can generate a thrust on the adjusting block 5. The outer wall of the straight rod portion 102 is threaded for threaded connection with the inner wall of the positioning cylinder 4 and with the adjusting head 3.

[0031] As an optional implementation, the end face of the free end of the adjusting rod 1 is provided with an adjusting groove 103.

[0032] like Figure 4 As shown, the end face of the free end of the adjusting rod 1 is provided with an adjusting groove 103, into which an adjusting tool can be installed to control the rotation of the adjusting rod 1.

[0033] As an optional implementation, the fixed flange ring 2 and the positioning cylinder 4, and the clamping flange ring 6 and the positioning cylinder 4 are both connected by screws.

[0034] like Figure 2 As shown, each end face of the positioning cylinder 4 is provided with a threaded hole, and the two ends of the positioning cylinder 4 can be connected to the fixing flange ring 2 and the clamping flange ring 6 respectively by screws.

[0035] As an optional implementation, the side wall of the fixed flange ring 2 is provided with at least one adjustment hole.

[0036] As an optional implementation, the side of the adjusting head 3 facing the positioning cylinder 4 is a conical surface.

[0037] like Figure 1 As shown, the side of the adjusting head 3 facing the positioning cylinder 4 is a conical surface, which can accommodate cylinders of different sizes.

[0038] As an optional implementation, the conical surface is provided with multiple concentric anti-slip patterns.

[0039] The conical surface has multiple concentric anti-slip grooves to increase the stability of the mounting cylinder end face.

[0040] As an optional implementation, the outer wall of the clamping rod 7 is threaded, and the free end is provided with anti-slip texture.

[0041] The outer wall of the clamping rod 7 is threaded to ensure that the position of the adjusting head 3 can be adjusted on the clamping rod 7. The free end of the clamping rod 7 is provided with anti-slip texture, and the free end of the adjusting rod 1 is also provided with anti-slip texture.

[0042] As an optional implementation, one side of the adjusting block 5 is a convex circular structure 502 and the other side is a concave circular structure 501; the convex circular structure 502 is located inside the positioning cylinder 4, and the concave circular structure 501 is located outside the positioning cylinder 4.

[0043] Figure 5 This is a schematic diagram of the structure of the adjusting block provided in an embodiment of the present invention, as shown below. Figure 5 As shown, one side of the adjusting block 5 is a convex circular structure 502, and the other side is a concave circular structure 501. The end face of the adjusting block 5 is also provided with a shaft hole 503, which is an elongated oval shape and is used to pass through the rotating shaft 8. The convex circular structure 502 protrudes from the inner wall of the positioning cylinder 4, and the two ends of the concave circular structure 501 protrude from the outer wall of the positioning cylinder 4. During the movement of the adjusting rod 1, the adjusting rod 1 presses the convex circular structure 502, so that the two ends of the concave circular structure 501 support the inner wall of the cylinder.

[0044] As an optional implementation, the positioning cylinder 4 is provided with three slots evenly distributed, and a positioning block is movably connected in each slot.

[0045] The outer wall of the positioning cylinder 4 is evenly provided with three slots, that is, the three slots are spaced 120° apart, and an adjusting block 5 is movably connected in each slot through a rotating shaft 8.

[0046] The operating principle of this device is as follows:

[0047] When the adjusting rod is rotated, it can move axially within the inner circle of the positioning cylinder. Since the shaft hole of the adjusting block can move on the rotating shaft, as the adjusting rod goes deeper, the tapered part of the adjusting rod will gradually contact the convex structure of the adjusting block, thus pushing the adjusting block to move away from the axis, until the concave structure of the adjusting block tightens the inner circle of the workpiece.

[0048] When the rotating adjusting head moves axially on the adjusting rod, its conical surface can press against the end face and corresponding inner circle of the cylindrical part, achieving clamping at one end. Similarly, when the rotating adjusting head moves axially on the clamping rod at the other end of the device, its conical surface can press against the other end face and corresponding inner circle of the cylindrical part. Thus, the two ends of the cylindrical part are clamped by the conical surfaces of the adjusting heads, and with the intermediate positioning cylinder and adjusting block supporting the middle part of the cylindrical workpiece, the clamping of the entire workpiece is completed.

[0049] The operating steps for this device are as follows:

[0050] ① Connect the fixing flange ring and the positioning cylinder with fixing screws;

[0051] ② Insert the tapered end of the adjusting rod into the threaded hole of the fixing flange ring, and rotate the adjusting rod through the adjusting groove to screw it into the inner circle of the positioning cylinder;

[0052] ③ Connect the fixed clamping rod and clamping flange to the positioning cylinder using fixing screws;

[0053] ④ Insert one end of the clamping rod corresponding to the tooling into the inner circle of the cylindrical workpiece to a suitable middle position;

[0054] ⑤ Rotate the adjusting rod to make it move axially. The conical surface of its tapered part pushes the adjusting block away from the center until the inner circle of the workpiece is tightened.

[0055] ⑥ Rotate the adjusting head on the adjusting rod to make its conical structure press against one end of the cylindrical workpiece;

[0056] ⑦ Install another adjusting head onto the clamping rod, and rotate the adjusting head so that its conical structure presses against the other end of the cylindrical workpiece;

[0057] ⑧ Use the chucks of the machine tool spindle and tailstock to clamp the adjusting rods and clamping rods at both ends of the fixture, or directly clamp the adjusting heads at both ends. This completes the clamping of the workpiece.

[0058] The above technical solution has the following beneficial effects: it can realize the clamping and support of the middle part of the inner circle when machining cylindrical workpieces, which is convenient and effective; it can realize automatic centering and automatic adaptation to the inner circle size of the workpiece when clamping the inner circle; it can realize the rapid tightening and loosening of the inner circle of the workpiece, which is convenient and quick; it has a simple structure, is easy to manufacture, and has strong universality.

[0059] The above-described specific embodiments of the utility model further illustrate the purpose, technical solution, and beneficial effects of the utility model. It should be understood that the above content is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the scope of protection of the utility model.

Claims

1. An inner circle fine-tuning and tightening device, characterized in that, include: A positioning cylinder, wherein the positioning cylinder is axially continuous and has a slot on its side wall; The two ends of the positioning cylinder are respectively connected to a fixing flange ring and a clamping flange ring; An adjusting rod, one end of which passes through the fixed flange ring and enters the through cavity of the positioning cylinder, and the outer wall of the adjusting rod is threadedly connected to the inner wall of the positioning cylinder; A clamping rod, one end of which is fixedly connected to the clamping flange ring; An adjusting head is threadedly connected to both the outer side of the adjusting rod and the outer side of the clamping rod. The adjusting head is used to clamp both ends of the workpiece. The adjusting block and the adjusting rod are movably connected to the slot via a rotating shaft. One part is located inside the positioning cylinder and the other part is located outside the positioning cylinder. When the adjusting rod moves axially inside the positioning cylinder, it can move the adjusting block away from the axis.

2. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The adjusting rod includes a tapered rod portion and a straight rod portion; The conical rod is frustum-shaped, and when its sidewall contacts the adjusting block, it can generate a thrust on the adjusting block; The outer wall of the straight rod is threaded, and the free end is provided with anti-slip texture.

3. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The free end of the adjusting rod is provided with an adjusting groove.

4. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The fixed flange ring and the positioning cylinder, as well as the clamping flange ring and the positioning cylinder, are connected by screws.

5. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The side wall of the fixed flange ring is provided with at least one adjustment hole.

6. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The side of the adjusting head facing the positioning cylinder is a conical surface.

7. The inner circle fine-tuning and tightening device according to claim 6, characterized in that: The conical surface is provided with multiple concentric anti-slip patterns.

8. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The outer wall of the clamping rod is threaded, and the free end is provided with anti-slip texture.

9. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: One side of the adjustment block has a convex circular structure, and the other side has a concave circular structure; The convex circular structure is located inside the positioning cylinder, and the concave circular structure is located on the outside of the positioning cylinder.

10. The inner circle fine-tuning and tightening device according to claim 1, characterized in that: The positioning cylinder is evenly provided with three slots, and a positioning block is movably connected in each slot.

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