Inner circle fine-tuning and tight-supporting device

Abstract

The embodiment of the invention discloses an inner circle fine-adjustment supporting device which comprises a positioning cylinder, a fine-adjustment supporting rod, a fine-adjustment supporting rod, a fine-adjustment supporting rod and a fine-adjustment supporting rod. 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] The invention relates to the field of mechanical processing, and in particular to an inner circle fine-tuning and tightening device. Background Art

[0002] In daily production and processing, for some thin-walled cylindrical parts with relatively large length-to-diameter ratio, when turning the outer circle, if only the two ends of the workpiece are clamped, the middle part of the cylinder will deform during turning due to lack of support. The processed workpiece often has problems such as out-of-tolerance roundness, deformation, uneven wall thickness, etc. 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 the prior art. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the present invention provides an inner circle fine-tuning and tightening device, comprising: a positioning cylinder, which is axially through and has a hole groove on the side wall; two ends of the positioning cylinder are respectively connected to a fixed flange ring and a clamping flange ring; an adjusting rod, one end of the adjusting rod 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 the clamping rod is fixedly connected to the clamping flange ring; an adjusting head, the outer side of the adjusting rod and the outer side of the clamping rod are both threadedly connected with an adjusting head, and the adjusting head is used to clamp the two ends of the workpiece; an adjusting block, the adjusting rod is movably connected to the hole groove through a rotating shaft, a part of which is located inside the positioning cylinder, and the other part is located outside the positioning cylinder, and when the adjusting rod moves axially in the positioning cylinder, the adjusting block can be moved in a direction away from the axis center.

[0006] Further optionally, the adjusting rod includes a tapered rod portion and a straight rod portion; the tapered rod portion is truncated cone-shaped, and when its side wall contacts the adjusting block, it can generate 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 grooves.

[0007] Further optionally, an adjustment groove is provided on the end surface of the free end of the adjustment rod.

[0008] Further optionally, the fixing flange ring and the positioning tube, and the clamping flange ring and the positioning tube are connected by screws.

[0009] Further optionally, the side wall of the fixed flange ring is provided with at least one adjustment hole.

[0010] Further optionally, a surface of the adjusting head facing the positioning cylinder is a conical surface.

[0011] Further optionally, the conical surface is provided with a plurality of concentric anti-slip grooves.

[0012] Further optionally, the outer wall of the clamping rod is provided with threads, and the free end is provided with anti-slip grooves.

[0013] Further optionally, one side of the adjustment block is a convex structure, and the other side is a concave structure; the convex structure is arranged inside the positioning cylinder, and the concave structure is located outside the positioning cylinder.

[0014] Further optionally, the positioning cylinder is evenly provided with three hole slots, and a positioning block is movably connected in each hole slot.

[0015] The above technical scheme has the following beneficial effects: it can realize the clamping and tightening of the middle part of the inner circle when processing 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 rapid tightening and rapid loosening of the inner circle of the workpiece, which is convenient and fast; it has a simple structure, is easy to manufacture, and has strong universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the inner circle fine-tuning and tightening device provided in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of a positioning cylinder provided in an embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional structure diagram of an inner circle fine-tuning and tightening device provided in an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of an adjustment rod provided by an embodiment of the present invention;

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

[0022] Figure numerals: 1-adjusting rod; 101-conical rod portion; 102-straight rod portion; 103-adjusting groove; 2-fixing flange ring; 3-adjusting head; 4-positioning cylinder; 5-adjusting block; 501-concave round structure; 502-convex round structure; 503-axial hole; 6-clamping flange ring; 7-clamping rod; 8-rotating shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to solve the problems of roundness tolerance, deformation and uneven wall thickness that are prone to occur during workpiece processing in the prior art, an embodiment of the present invention provides an inner circle fine-tuning and tightening device. Figure 1 FIG. 1 is a schematic diagram of the three-dimensional structure of the inner circle fine-tuning and tightening device provided by an embodiment of the present invention. Figure 1 As shown, the device includes: a positioning cylinder 4, which is axially through and has a hole groove on the side wall; the two ends of the positioning cylinder 4 are respectively connected to the fixed flange ring 2 and the clamping flange ring 6; an adjusting rod 1, one end of the adjusting rod 1 passes through the fixed 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 the clamping rod 7 is fixedly connected to the clamping flange ring 6; an adjusting head 3, the outer side of the adjusting rod 1 and the outer side of the clamping rod 7 are both threadedly connected with the adjusting head 3, and the adjusting head 3 is used to clamp the two ends of the workpiece; an adjusting block 5, the adjusting rod 1 is movably connected to the hole groove through a rotating shaft 8, a part of which is located inside the positioning cylinder 4, and the other part is located outside the positioning cylinder 4, when the adjusting rod 1 moves axially in the positioning cylinder 4, the adjusting block 5 can be moved in the direction away from the axis.

[0025] Figure 2 is a schematic diagram of the three-dimensional structure of the positioning cylinder provided in an embodiment of the present invention, such as Figure 2 As shown, the positioning cylinder 4 is axially through, and at least one hole groove is opened on the side wall. Figure 1 As shown, one end of the positioning tube 4 is connected to a fixed flange ring 2, and the other end is connected to a clamping flange ring 6. The diameters of the fixed flange ring 2 and the clamping flange ring 6 are consistent with those of the positioning tube 4.

[0026] The middle of the fixed flange is provided with an opening, such as Figure 3As shown, one end of the adjusting rod 1 passes through the opening of the fixing flange and enters the through cavity of the positioning cylinder 4, and the adjusting rod 1 extends into the outer wall of the positioning cylinder 4 and is threadedly connected with the inner wall of the positioning cylinder 4, so that the length of the adjusting rod 1 entering 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 arranged in the hole groove, with part of it protruding out of the outer wall of the positioning cylinder 4 and the other part protruding out of the inner wall of the positioning cylinder 4, and is movably connected in the shaft hole 503 through the rotating shaft 8. When the adjusting rod 1 moves, it will provide supporting force to the adjusting block 5, so that the adjusting block 5 located on the outer part 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 the two ends of the cylinder.

[0029] As an optional implementation, Figure 4 is a schematic diagram of the structure of the adjustment rod provided by an embodiment of the present invention, such as 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 truncated cone-shaped, and when its side wall contacts the adjusting block 5, it can generate 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 grooves.

[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 truncated, and the end thereof extends into the through cavity of the positioning cylinder 4. The inclined side wall of the tapered rod portion 101 can generate thrust on the adjusting block 5. The outer wall of the straight rod portion 102 is provided with threads for threaded connection with the inner wall of the positioning cylinder 4 and with the adjusting head 3.

[0031] As an optional implementation, an adjustment groove 103 is provided on the end surface of the free end of the adjustment rod 1 .

[0032] like Figure 4 As shown, an end surface of the free end of the adjusting rod 1 is provided with an adjusting groove 103 , and an adjusting tool can be installed in the adjusting groove 103 , and the rotation of the adjusting rod 1 can be controlled by the adjusting tool.

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

[0034] like Figure 2 As shown, each end surface of the positioning tube 4 is provided with a threaded hole, and the two ends of the positioning tube 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, a surface 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 adapt to the clamping of cylinders of different sizes.

[0038] As an optional implementation, a plurality of concentric anti-slip grooves are provided on the conical surface.

[0039] The conical surface is provided with multiple circles of concentric anti-slip grooves to increase the stability of the end face of the clamping cylinder.

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

[0041] The outer wall of the clamping rod 7 is provided with threads to ensure that the adjusting head 3 can adjust the position on the clamping rod 7. The free end of the clamping rod 7 is provided with anti-skid grooves, and the free end of the adjusting rod 1 is also provided with anti-skid grooves.

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

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

[0044] As an optional implementation, the positioning tube 4 is evenly provided with three holes, and a positioning block is movably connected in each hole.

[0045] The outer wall of the positioning cylinder 4 is evenly provided with three holes, that is, the three holes are spaced 120 degrees apart from each other, and an adjustment block 5 is movably connected to each hole through a rotating shaft 8.

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

[0047] When the adjusting rod is rotated, the adjusting rod can move axially in the inner circle of the positioning cylinder. Since the axial hole of the adjusting block can move on the rotating shaft, as the adjusting rod continues to go deeper, the tapered rod part of the adjusting rod will gradually contact the convex structure of the adjusting block and then push the adjusting block to move in the direction away from the axis until the convex part of the concave structure of the adjusting block tightens the inner circle of the workpiece.

[0048] When the rotary adjustment head moves axially on the adjustment rod, its conical surface can press against the end face and the corresponding inner circle of the cylinder-like parts, thus achieving clamping at one end. When the rotary adjustment head moves axially on the clamping rod at the other end of the device, its conical surface can also press against the other end face and the corresponding inner circle of the cylinder parts. In this way, the two ends of the cylinder are clamped by the conical surface of the adjustment head, and the middle positioning cylinder and the adjustment block hold the middle part of the cylinder workpiece tightly, thus completing the clamping of the entire workpiece.

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

[0050] ① Connect the fixed 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 fixed flange ring, and rotate the adjusting rod through the adjusting slot 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 through fixing screws;

[0053] ④ Insert the end of the clamping rod corresponding to the tooling into the inner circle of the cylinder workpiece to the appropriate middle position;

[0054] ⑤ Rotate the adjusting rod to make it move axially, and the conical surface of the tapered rod pushes the adjusting block to move 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 surface 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 surface 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 rod and clamping rod at both ends of the tooling respectively, or directly clamp the adjusting heads at both ends, thus completing the clamping of the workpiece.

[0058] The above technical scheme has the following beneficial effects: it can realize the clamping and tightening of the middle part of the inner circle when processing 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 rapid tightening and rapid loosening of the inner circle of the workpiece, which is convenient and fast; it has a simple structure, is easy to manufacture, and has strong universality.

[0059] The specific implementation methods of the above invention further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above content is only the specific implementation methods of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner circle fine-tuning and tightening device, characterized in that: include: A positioning cylinder, the positioning cylinder is axially through and has a hole groove on the side wall; The two ends of the positioning cylinder are respectively connected to a fixed flange ring and a clamping flange ring; An adjusting rod, one end of which passes through the fixing 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, the outer side of the adjusting rod and the outer side of the clamping rod are both threadedly connected with an adjusting head, and the adjusting head is used to clamp the two ends of the workpiece; The adjusting block, the adjusting rod is movably connected to the hole groove through 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 in the positioning cylinder, the adjusting block can be moved in a direction away from the axis.

2. The inner circle fine adjustment and tightening device according to claim 1, characterized in that: The adjusting rod comprises a tapered rod portion and a straight rod portion; The conical rod portion is in a truncated cone shape, and when its side wall contacts the adjusting block, it can generate 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 grooves.

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

4. The inner circle fine adjustment and tightening device according to claim 1, characterized in that: The fixing flange ring and the positioning tube, and the clamping flange ring and the positioning tube are both connected by screws.

5. The inner circle fine adjustment 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 adjustment 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 adjustment and tightening device according to claim 6, characterized in that: The conical surface is provided with a plurality of concentric anti-slip grooves.

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

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

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

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