CN222405305U - Positioning device for processing safety tongue of large hook - Google Patents
Positioning device for processing safety tongue of large hook Download PDFInfo
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- CN222405305U CN222405305U CN202420540214.7U CN202420540214U CN222405305U CN 222405305 U CN222405305 U CN 222405305U CN 202420540214 U CN202420540214 U CN 202420540214U CN 222405305 U CN222405305 U CN 222405305U
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Abstract
本实用新型公开了大钩安全舌加工的定位装置，包括L型的底板，底板的边缘处开设有若干个卡槽，底板外表面开设有两个定位孔，一个定位孔连接有定位芯轴，另一个定位孔连接有芯杆，芯杆外部卡接有定位罩。本实用新型定位装置采用位置定位与端面定位的方式，通过端面定位限制了安全舌的Z方向的自由度，保证安全舌整体中心处于水平状态，通过位置定位限制了安全舌在XY平面的自由度，保证安全舌定位准确；满足了安全舌尺寸、形位公差及表面质量的设计要求，有效保证了安全舌的尺寸和形位公差，提高了表面质量和加工效率，降低了生产成本。
The utility model discloses a positioning device for processing a large hook safety tongue, comprising an L-shaped bottom plate, a plurality of card slots are provided at the edge of the bottom plate, two positioning holes are provided on the outer surface of the bottom plate, one positioning hole is connected with a positioning mandrel, the other positioning hole is connected with a core rod, and a positioning cover is clamped on the outside of the core rod. The positioning device of the utility model adopts the method of position positioning and end face positioning, and limits the freedom of the safety tongue in the Z direction through the end face positioning, ensuring that the overall center of the safety tongue is in a horizontal state, and limits the freedom of the safety tongue in the XY plane through position positioning, ensuring that the safety tongue is accurately positioned; the design requirements of the safety tongue size, shape and position tolerance and surface quality are met, the size and shape and position tolerance of the safety tongue are effectively guaranteed, the surface quality and processing efficiency are improved, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of machining fixtures, and particularly relates to a positioning device for machining a safety tongue of a hook.
Background
The big hook is a part of an oil drilling lifting system and is hung below the travelling block, and in order to avoid falling of the heavy objects, the big hook is provided with a safety tongue piece, so that a certain blocking effect can be achieved when the heavy objects shake.
The safety tongue is a key part for lifting the hook, but the arc of the safety tongue is a direct bearing part, and the arc surface of the safety tongue needs to be clamped and positioned twice to finish processing, so that the processing quality is important, and a positioning mode needs to be reasonably selected.
The positioning mode in the prior art is to directly clamp the safety tongue for visual alignment, but the mode cannot directly find the clamping and positioning position to influence the processing efficiency, and the prior art cannot limit the three degrees of freedom of X, Y, Z on the safety tongue, so that the problem of reference error occurs in the subsequent processing, and the processing precision and roughness of the arc surface of the safety tongue are reduced.
Disclosure of utility model
The utility model aims to provide a positioning device for processing a safety tongue of a hook, which solves the problem that in the prior art, reference errors occur in subsequent processing due to the fact that three-side degrees of freedom of the safety tongue cannot be limited.
The positioning device for processing the safety tongue of the hook comprises an L-shaped bottom plate, wherein a plurality of clamping grooves are formed in the edge of the bottom plate, two positioning holes are formed in the outer surface of the bottom plate, one positioning hole is connected with a positioning mandrel, the other positioning hole is connected with a core rod, and a positioning cover is clamped outside the core rod.
The present utility model is also characterized in that,
The radial diameter of the positioning hole is 22 mm-24 mm;
The positioning mandrel and the core bar are connected with the positioning hole in a threaded manner;
The positioning mandrel comprises a mandrel body, wherein a circular positioning surface is fixedly connected to the outer surface of the mandrel body, an external thread body is fixedly connected to the end part of the mandrel body, and a fastening nut is connected to the external thread body in a threaded manner;
the locating cover comprises a rectangular windowing window with a hollow structure, a circular through hole is formed in the top end of the windowing window, a disc is fixedly connected to one end, far away from the through hole, of the windowing window, a suction magnet is fixedly connected to the bottom end of the disc, and the core rod penetrates through the through hole and is inserted into the locating hole.
The beneficial effects of the utility model are as follows:
1. According to the positioning device for processing the safety tongue of the large hook, the Z-direction freedom degree of the safety tongue is limited by adopting the mode of position positioning and end face positioning, the whole center of the safety tongue is ensured to be in a horizontal state, the freedom degree of the safety tongue on a X, Y plane is limited by adopting the position positioning, and the accuracy of positioning of the safety tongue is ensured;
2. The positioning device can realize quick positioning and alignment on the premise of meeting the technical requirements of workpieces, so that the processing efficiency is improved, the positioning is quick and reliable, the operation is simple and convenient, and the processing precision and the processing efficiency of products are greatly improved;
3. The positioning device solves the problem of face falling alignment of the safety tongue during milling machine processing, meets the design requirements of the safety tongue on size, form and position tolerance and surface quality, effectively ensures the size and form and position tolerance of the safety tongue, improves the surface quality and processing efficiency, and reduces the production cost.
Drawings
FIG. 1 is a schematic view of the structure of a positioning device for processing a safety tongue of a hook of the present utility model;
FIG. 2 is a side view of the positioning device of the present utility model;
FIG. 3 is a schematic view of the positioning mandrel in the positioning device of the present utility model;
FIG. 4 is a schematic view of the positioning cover of the positioning device of the present utility model;
FIG. 5 is a schematic view of the positioning of the base plate and safety tongue in the positioning device of the present utility model.
In the figure, 1, a bottom plate, 2, a clamping groove, 3, a positioning hole, 4, a positioning mandrel, 401, a mandrel body, 402, a positioning surface, 403, an external thread body, 404, a fastening nut, 5, a core rod, 6, a positioning cover, 601, a fenestration, 602, a through hole, 603, a disc and 604, and a suction magnet.
Detailed Description
The utility model will now be described in detail with reference to the drawings and examples.
Example 1
As shown in fig. 1, this embodiment provides a positioning device for processing a safety tongue of a hook, including an L-shaped bottom plate 1, where a plurality of clamping grooves 2 are formed at the edge of the bottom plate 1, where the clamping grooves 2 are used to connect and fix with a machine tool workbench, and the freedom degree of the safety tongue in the Z direction is limited by end face positioning, so as to ensure that the whole center of the safety tongue is in a horizontal state. Two locating holes 3 are formed in the outer surface of the bottom plate 1, and the radial diameter of each locating hole 3 is 22-24 mm.
As shown in fig. 2 and 3, one positioning hole 3 is connected with a positioning mandrel 4, the positioning mandrel 4 comprises a mandrel body 401, the diameter size of the mandrel body 401 is the same as the diameter of a hole on a conventional safety tongue, the working cost of processing the hole on the safety tongue is saved, and the positioning is directly performed.
The outside surface rigid coupling of dabber body 401 has circular shape locating surface 402 for place the safety tongue, the tip rigid coupling of dabber body 401 has external screw thread body 403, and external screw thread body 403 threaded connection has fastening nut 404, and fastening nut 404 pastes tight bottom plate 1, can be according to actual demand, through the holistic height of fastening nut 404 adjustment location dabber 4, and reach the effect of further fixed location dabber 4.
The other positioning hole 3 is connected with a core rod 5, and the positioning mandrel 4 and the core rod 5 are connected with the positioning hole 3 in a threaded manner. The freedom degree of the safety tongue on the X, Y plane is limited through position positioning, the accuracy of positioning of the safety tongue is ensured, the problem of face falling alignment of the safety tongue during milling machine processing is solved, the design requirements of the size, form and position tolerance and surface quality of the safety tongue are met, the size and form and position tolerance of the safety tongue are effectively ensured, the surface quality and processing efficiency are improved, and the production cost is reduced.
As shown in FIG. 4, the positioning cover 6 comprises a rectangular open window 601 with a hollow structure, a circular through hole 602 is formed in the top end of the open window 601, a disc 603 is fixedly connected to one end of the open window 601 away from the through hole 602, a suction magnet 604 is fixedly connected to the bottom end of the disc 603, and the core bar 5 penetrates through the through hole 602 and is inserted into the positioning hole 3. The core bar 5 fixes the safety tongue, and the suction magnet 604 at the bottom end of the positioning cover 6 is adsorbed on the safety tongue, so that the stability of the core bar 5 is enhanced, and the core bar 5 is prevented from being damaged in milling.
The working process of the utility model is as follows:
As shown in FIG. 5, when in processing and use, the bottom plate 1 is connected and fixed with a machine tool workbench through the clamping groove 2, the positioning mandrel 4 and the core bar 5 are connected and fixed on the bottom plate 1 through the positioning holes 3 in a threaded manner, the positioning mandrel 4 is fixed through the fastening nuts 404, after the processed holes on the surface of the safety tongue are aligned with the positioning holes 3, the safety tongue passes through the positioning mandrel 4 and the core bar 5, so that the safety tongue is flatly placed on the surface of the positioning surface 402, the positioning cover 6 is sleeved on the core bar 5, and the upper surface of the safety tongue is adsorbed, so that the purpose of clamping a positioning workpiece is achieved.
Example 2
The embodiment provides a positioning device for processing a safety tongue of a hook, which comprises an L-shaped bottom plate 1, wherein a plurality of clamping grooves 2 are formed in the edge of the bottom plate 1, two positioning holes 3 are formed in the outer surface of the bottom plate 1, one positioning hole 3 is connected with a positioning mandrel 4, the other positioning hole 3 is connected with a core rod 5, and a positioning cover 6 is clamped outside the core rod 5.
Example 3
On the basis of the embodiment 2, the radial diameter of the positioning hole 3 is 22-24 mm, and the positioning mandrel 4 and the core rod 5 are connected with the positioning hole 3 in a threaded mode.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420540214.7U CN222405305U (en) | 2024-03-19 | 2024-03-19 | Positioning device for processing safety tongue of large hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420540214.7U CN222405305U (en) | 2024-03-19 | 2024-03-19 | Positioning device for processing safety tongue of large hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222405305U true CN222405305U (en) | 2025-01-28 |
Family
ID=94352580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420540214.7U Active CN222405305U (en) | 2024-03-19 | 2024-03-19 | Positioning device for processing safety tongue of large hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222405305U (en) |
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2024
- 2024-03-19 CN CN202420540214.7U patent/CN222405305U/en active Active
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