Tensioning clamp for small thin-wall shell part
By designing a tensioning clamp with an installation sleeve, a tensioning end cap, and an adjustment mechanism, the problem of traditional clamps being unable to fix small, thin-walled housing parts is solved, achieving convenient fixation and reduced damage.
Patent Information
- Application Number
- CN202520404682.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Traditional fixtures are difficult to effectively hold small, thin-walled shell parts, causing the parts to deform during machining and making them impossible to clamp properly.
A tensioning clamp comprising an mounting sleeve, a tensioning end cap, and an adjustment mechanism was designed. The clamp is initially positioned by the clearance hole and clearance groove, and the adjustment mechanism drives the tensioning end cap to press the small thin-shell part, thereby increasing the force-bearing area and reducing the risk of damage.
It enables convenient fixing of small, thin-walled shell parts, reduces the risk of deformation and scratches, and improves processing stability.
Smart Images
Figure CN223789998U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a tension clamp, in particular to a tension clamp for small thin-walled shell parts. BACKGROUND
[0002] Thin-walled parts refer to parts with thin wall thickness, usually with wall thickness less than or equal to one-tenth of the radial dimension (such as diameter or width). Such parts are widely used in aerospace, automotive, electronics and other fields, and are favored for their light weight, compact structure and other advantages. In the machining process of small thin-walled shells, the traditional clamp for fixing the product often cannot meet the machining requirements. For example, after the product is machined in the first process, the machined part needs to be clamped and positioned to complete the machining of the other end of the product. However, using the traditional three-jaw chuck to clamp the product, due to the small wall thickness of the product, even if the smallest clamping force of the hydraulic chuck is used, the product will deform due to insufficient strength, making it impossible to clamp and machine normally. SUMMARY
[0003] The utility model discloses a tension clamp for small thin-walled shell parts. It has the advantages of convenient clamping and not easy to damage thin shell parts.
[0004] The utility model discloses a technical scheme of a tension clamp for small thin-walled shell parts, which comprises a mounting sleeve for connecting a machine tool, a tension end cover arranged at the end of the mounting sleeve, and an adjusting mechanism arranged in the mounting sleeve and used for pulling the tension end cover to tension the thin shell part. The tension end cover comprises an annular positioning portion and a pressing portion arranged at the end of the annular positioning portion. The pressing portion is provided with an avoidance hole corresponding to the part. A plurality of avoidance grooves are arranged outside the avoidance hole. A first force transmission hole is arranged in the annular positioning portion and coaxially arranged with the adjusting mechanism.
[0005] In the foregoing tension clamp for small thin-walled shell parts, the adjusting mechanism comprises a tension spindle arranged in the mounting sleeve and axially movable relative to the mounting sleeve, an external threaded section arranged outside the mounting sleeve, and a nut arranged outside the external threaded section. Two groups of parallel and axially arranged through holes are arranged in the tension spindle. A first force transmission rod is arranged in the through hole close to the tension end cover. A second force transmission rod is arranged in the through hole away from the tension end cover. A stepped hole corresponding to the second force transmission rod is arranged at the end of the nut away from the tension end cover. The first force transmission rod passes through the first force transmission hole, and anti-drop screws are arranged at both ends of the first force transmission rod. A positioning hole and a directional groove corresponding to the part are arranged at the end of the mounting sleeve. Six groups of equally divided second force transmission holes are further arranged in the nut.
[0006] In the foregoing tension clamp for small thin-walled shell parts, a straight groove corresponding to the first force transmission rod and the second force transmission rod is arranged axially in the mounting sleeve.
[0007] Compared with the prior art, the utility model has the advantages of the following:
[0008] The small thin shell part is preliminarily positioned in the positioning hole and the directional slot in the end portion of the mounting sleeve, then the adjusting mechanism drives the tension end cover to move relative to the mounting sleeve until the pressing part of the tension end cover acts on the small thin shell part, and the small thin shell part is pressed, the installation is convenient, and the fixing of the small thin shell part by the tension end cover can increase the stress area and reduce the risk of damage of the small thin shell part. BRIEF DESCRIPTION OF DRAWINGS
[0009] Fig. 1 is the structural schematic diagram of the utility model;
[0010] Fig. 2 is the structural schematic diagram of the tensioning mandrel of the utility model;
[0011] Fig. 3 is the structural schematic diagram of the tension end cover of the utility model;
[0012] Fig. 4 is the structural schematic diagram of the mounting sleeve of the utility model;
[0013] Fig. 5 is the structural schematic diagram of the nut of the utility model.
[0014] The marks in the drawings are: 1-mounting sleeve, 3-tensioning mandrel, 4-through hole, 5-first force transmission rod, 6-straight slot, 7-external thread section, 8-nut, 9-step hole, 10-tension end cover, 11-first force transmission hole, 12-second force transmission rod, 13-avoidance hole, 14-avoidance slot, 15-annular positioning part, 16-pressing part, 17-anti-drop screw, 18-positioning hole, 19-directional slot, 20-second force transmission hole. DETAILED DESCRIPTION
[0015] The utility model will be further described in connection with the embodiments, but not as the basis for limiting the utility model.
[0016] Embodiment. A tensioning clamp for small thin wall shell parts, which is composed of Figs. 1-3The device for fixing small thin shell parts is shown, including a mounting sleeve 1 for connecting a machine tool, a tension end cover 10 arranged at the end of the mounting sleeve 1, and an adjusting mechanism arranged in the mounting sleeve 1 and pulling the tension end cover 10 to tension the thin shell part; the tension end cover 10 includes an annular positioning portion 15 and a pressing portion 16 arranged at the end of the annular positioning portion 15, the pressing portion 16 is provided with a clearance hole 13 corresponding to the part, a plurality of evenly distributed clearance grooves 14 are arranged outside the clearance hole 13, and a first force transmission hole 11 coaxially arranged and matched with the adjusting mechanism is arranged in the annular positioning portion 15.
[0017] The adjusting mechanism includes a tensioning mandrel 3 arranged in the mounting sleeve 1 and axially movable relative to the mounting sleeve 1, an outer threaded section 7 arranged outside the mounting sleeve 1, and a nut 8 arranged outside the outer threaded section 7, the tensioning mandrel 3 is provided with two groups of parallel and axially arranged through holes 4, a first force transmission core rod 5 is arranged in the through hole 4 close to the tension end cover 10, a second force transmission core rod 12 is arranged in the through hole 4 away from the tension end cover 10, the nut 8 is provided with a stepped hole 9 corresponding to the second force transmission core rod 12 at the end away from the tension end cover 10, the first force transmission core rod 5 passes through the first force transmission hole 11, and anti-drop screws 17 are arranged at both ends of the first force transmission core rod 5; the end of the mounting sleeve 1 is provided with a positioning hole 18 and a directional groove 19 corresponding to the part, and the nut 8 is further provided with six groups of equally divided second force transmission holes 20.
[0018] The mounting sleeve 1 is provided with a straight groove 6 corresponding to the first force transmission core rod 5 and the second force transmission core rod 12 and arranged axially.
[0019] The device is used for fixing small thin shell parts, especially positioning and fixing small thin shell parts with one end already machined. During installation, the mounting sleeve 1 is first fixed on the machine tool by a hydraulic three-jaw, then the tensioning mandrel 3 is inserted into the mounting sleeve 1, the second force transmission core rod 12 passes through the straight groove 6 and the through hole 4 and is clamped in the stepped hole 9 of the nut 8, then the tension end cover is installed on the mounting sleeve, the first force transmission core rod 5 passes through the first force transmission hole 11, the straight groove 6 and the through hole 4 in sequence, and the anti-drop screws 17 are installed at both ends of the first force transmission core rod 5 to prevent the first force transmission core rod 5 from separating from the tension end cover 10.
[0020] When in use, the small thin shell part is processed by passing through the avoiding hole 13 and the avoiding groove 14, and the small thin shell part is processed by rotating relative to the tension end cover 10, and the processed end of the small thin shell part is placed into the positioning hole 18 and the directional groove 19 of the mounting sleeve end, the adjusting mechanism drives the tension end cover 10 to move relative to the mounting sleeve 1, so that the pressing part 16 in the tension end cover 10 can press the small thin shell part, and positioning and fixing are realized. The avoiding hole 13 and the avoiding groove 14 are adjusted according to the small thin shell part after processing. Then the adjusting mechanism drives the tension end cover 10 to move relative to the mounting sleeve 1, so that the small thin shell part is pressed. The adjusting mechanism adjusts the nut 8 through the second force transmission hole 20, the nut 8 rotates relative to the outer threaded section 7 and moves away from the tension end cover 10, the nut 8 drives the second force transmission rod 12 to move through the stepped hole 9, so that the tension rod 3 also moves correspondingly, so that the first force transmission rod 5 on the tension rod 3 can drive the tension end cover 10 to move relative to the mounting sleeve 1, and positioning and fixing of the small thin shell part are realized. Not only is the installation convenient, but also the product is clamped uniformly, the pressing force acting area is relatively large, the possibility of product damage can be reduced, and when the product is pressed, the tension end cover 10 and the product stress surface do not move relatively, and the product is not rotated and scratched.
[0021] The utility model discloses a kind of small thin wall shell part's tension clamps, including the mounting sleeve (1) for connecting machine tool, the tension end cover (10) being arranged at the end of mounting sleeve (1) and the adjusting mechanism being arranged in mounting sleeve (1) and pulling tension end cover (10) to thin shell part is tensioned;The tension end cover (10) includes annular positioning part (15) and the pressing part (16) being arranged at the end of annular positioning part (15), pressing part (16) is equipped with the avoiding hole (13) corresponding to part, avoiding hole (13) is equipped with multiple groups of evenly distributed avoiding groove (14), annular positioning part (15) is equipped with a group of coaxially arranged and the first force transmission hole (11) cooperating with adjusting mechanism.It has the advantages of convenient clamping, not easy to damage thin shell part.
Claims
1. A tensioning fixture for small thin-walled housing parts, characterized in that: The utility model relates to a kind of tensioning mechanisms for connecting machine tool, including installation sleeve (1) for installation sleeve (1) end cover (10) of tensioning end cover (10) and setting in installation sleeve (1) and pull tensioning end cover (10) to the thin shell part is tensioned and is adjusted mechanism;The tensioning end cover (10) includes annular positioning portion (15) and the compression portion (16) of being equipped in annular positioning portion (15) end portion, compression portion (16) is equipped with corresponding avoidance hole (13) with part, avoidance hole (13) is equipped with multiple groups of evenly distributed avoidance slot (14) outside, annular positioning portion (15) is equipped with coaxially with the first force transmission hole (11) of being arranged and being matched with adjustment mechanism in.
2. A tensioning fixture for small thin-walled housing parts according to claim 1, characterized in that: The utility model relates to a kind of tensioning mechanisms for connecting machine tool, including installation sleeve (1) for installation sleeve (1) end cover (10) of tensioning end cover (10) and setting in installation sleeve (1) and pull tensioning end cover (10) to the thin shell part is tensioned and is adjusted mechanism;The tensioning end cover (10) includes annular positioning portion (15) and the compression portion (16) of being equipped in annular positioning portion (15) end portion, compression portion (16) is equipped with corresponding avoidance hole (13) with part, avoidance hole (13) is equipped with multiple groups of evenly distributed avoidance slot (14) outside, annular positioning portion (15) is equipped with coaxially with the first force transmission hole (11) of being arranged and being matched with adjustment mechanism in.
3. A tensioning fixture for small thin-walled housing parts according to claim 2, characterized in that: The utility model relates to a kind of tensioning mechanisms for connecting machine tool, including installation sleeve (1) for installation sleeve (1) end cover (10) of tensioning end cover (10) and setting in installation sleeve (1) and pull tensioning end cover (10) to the thin shell part is tensioned and is adjusted mechanism;The tensioning end cover (10) includes annular positioning portion (15) and the compression portion (16) of being equipped in annular positioning portion (15) end portion, compression portion (16) is equipped with corresponding avoidance hole (13) with part, avoidance hole (13) is equipped with multiple groups of evenly distributed avoidance slot (14) outside, annular positioning portion (15) is equipped with coaxially with the first force transmission hole (11) of being arranged and being matched with adjustment mechanism in. The utility model relates to a kind of tensioning mechanisms for connecting machine tool, including installation sleeve (1) for installation sleeve (1) end cover (10) of tensioning end cover (10) and setting in installation sleeve (1) and pull tensioning end cover (10) to the thin shell part is tensioned and is adjusted mechanism;The tensioning end cover (10) includes annular positioning portion (15) and the compression portion (16) of being equipped in annular positioning portion (15) end portion, compression portion (16) is equipped with corresponding avoidance hole (13) with part, avoidance hole (13) is equipped with multiple groups of evenly distributed avoidance slot (14) outside, annular positioning portion (15) is equipped with coaxially with the first force transmission hole (11) of being arranged and being matched with adjustment mechanism in.