Positioning clamp for hot forging three-way flange machining
By designing a positioning fixture for hot-forged tee flange processing, and using the combination of elastic and limiting components with a rotary chuck structure, the problems of low precision and low efficiency in tee flange processing are solved, achieving a highly efficient and stable processing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI FIRST HYDRAULIC
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-12
AI Technical Summary
The existing tee flange processing process suffers from low precision, low efficiency, and high production costs and product quality issues due to multiple clamping operations.
A positioning fixture for hot forging tee flange processing was designed, including a tee flange, a pressure head, a positioning seat, and a baffle. Through the cooperation of elastic elements and limiting elements, the tee flange and the pressure head can be detachably connected. A special rotary chuck structure is adopted to realize the automatic rotation and positioning clamping of the workpiece.
It improves processing accuracy and efficiency, reduces workpiece wobbling, lowers production costs, simplifies processing procedures, and enhances processing stability and convenience.
Smart Images
Figure CN224222645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical manufacturing technology, and in particular to a positioning fixture for processing hot forged tee flanges. Background Technology
[0002] When machining tee flanges, it's essential to ensure the blank material is stable and clamped before cutting. The commonly used tee flange machining process involves first flattening and drilling one end face, then removing the workpiece, rotating it 90°, and reclamping it to machine the second plane. This process is repeated for the final plane. However, this method typically requires positioning the workpiece based on the flange blank's external shape. Firstly, using ordinary clamping methods results in low accuracy due to the reliance on experience to determine the perpendicularity of the planes. Secondly, without positioning fixtures, multiple reclamping operations are necessary, impacting machining efficiency and stability. Furthermore, the resulting products are prone to quality issues, and rework and scrap of defective products increase production costs. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a positioning fixture for hot forging tee flange processing.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hot forging tee flange processing positioning fixture, comprising a tee flange, a pressure head disposed at one end of the tee flange, and a positioning seat disposed at the other end of the tee flange. A connecting hole is provided at the end where the tee flange and the pressure head are connected. The pressure head has a connecting part. The tee flange and the pressure head are detachably connected through the cooperation of the connecting part and the connecting hole. A pad is provided between the positioning seat and the tee flange. A baffle is provided on the positioning seat, and the baffle has multiple protrusions.
[0005] Furthermore, a first blind hole is formed on the outer surface of the connecting part, and a second blind hole is formed on the wall of the connecting hole. The opening position of the second blind hole corresponds to the opening position of the first blind hole. An elastic member and a limiting member are provided in the second blind hole. One end of the elastic member is connected to the wall of the second blind hole, and the other end of the elastic member is connected to the limiting member. At least part of the limiting member is exposed to the outside through the second blind hole and can extend into the first blind hole.
[0006] Furthermore, the limiting member is a spherical structure, and the elastic member is a spring.
[0007] Furthermore, the elastic element is a columnar structure made of silicone or rubber material.
[0008] Furthermore, the number of the first blind holes is multiple, and the number of the second blind holes corresponds to the number of the first blind holes.
[0009] Furthermore, the pad is fixedly connected to the positioning seat by four first screws.
[0010] Furthermore, the baffle is fixedly connected to the positioning seat by four second screws.
[0011] Furthermore, the back of the tee flange is in contact with the baffle.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] This utility model presents a positioning fixture for hot-forged tee flange processing. It employs a structural design suitable for the shape of tee flanges, making the fixture more stable and reliable when supporting them. By optimizing the shape, size, and material of the fixture, it can effectively support tee flange workpieces of different specifications and weights, ensuring no shaking occurs during processing. Furthermore, the new tooling eliminates the need for repeated removal and re-clamping of the blank. Through its rational structural design, the processing time is significantly reduced, improving processing accuracy, efficiency, and stability. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the hot forging tee flange machining positioning fixture of this utility model;
[0015] Figure 2 for Figure 1 The diagram shows the structure of the positioning fixture for machining hot-forged tee flanges.
[0016] Figure 3 for Figure 1 The cross-sectional view along the AA direction of the positioning fixture for machining the hot forged tee flange is shown.
[0017] Figure 4 for Figure 1 The diagram shows a structural schematic of the hot forging tee flange machining positioning fixture from another perspective.
[0018] Legend:
[0019] 1. Pressure head; 2. Tee flange; 3. Gasket; 4. Positioning seat; 5. Screw; 6. Baffle; 7. Screw. Detailed Implementation
[0020] Please see Figures 1-4This utility model provides a positioning fixture for hot forging tee flange processing, including a tee flange 2, a pressure head 1 disposed at one end of the tee flange, and a positioning seat 4 disposed at the other end of the tee flange. A connecting hole is provided at the end of the tee flange and the pressure head connected together. The pressure head has a connecting part. The tee flange and the pressure head are detachably connected through the cooperation of the connecting part and the connecting hole. A pad 3 is provided between the positioning seat and the tee flange. A baffle 6 is provided on the positioning seat. The baffle has multiple protrusions.
[0021] In one embodiment, to improve the connection stability of the tee flange and the pressure head, a first blind hole is provided on the outer surface of the connection part, and a second blind hole is provided on the wall of the connection hole. The opening position of the second blind hole corresponds to the opening position of the first blind hole. An elastic element and a limiting element are provided in the second blind hole. One end of the elastic element is connected to the wall of the second blind hole, and the other end of the elastic element is connected to the limiting element. At least part of the limiting element is exposed to the outside through the second blind hole and can extend into the first blind hole.
[0022] In one embodiment, the limiting member is a spherical structure, and the elastic member is a spring.
[0023] In one embodiment, the elastic element is a columnar structure made of silicone or rubber material.
[0024] In one embodiment, the number of first blind holes is multiple, and the number of second blind holes corresponds to the number of first blind holes.
[0025] Understandably, during the assembly of the tee flange and the pressure head, the limiting member is compressed by the outer surface of the connecting part, causing the elastic member to be compressed. When the positions of the second blind hole and the first blind hole correspond, at least a portion of the limiting member is exposed to the outside through the second blind hole and can extend into the first blind hole. At this time, the tee flange and the pressure head are assembled in place. On the one hand, this can improve the connection stability of the tee flange and the pressure head. On the other hand, it can remind the user that the tee flange and the pressure head have been assembled in place.
[0026] In one embodiment, the pad is fixedly connected to the positioning seat by four first screws 5.
[0027] In one embodiment, the baffle is fixedly connected to the positioning seat by four second screws 7.
[0028] In one embodiment, the back of the tee flange is abutted against the baffle.
[0029] Understandably, when the hot-forged tee flange processing positioning fixture is in use, the pressure head 1 is located at the top, and the pressure head and the positioning seat 4 are respectively mounted on the rotary chuck. The bottom of the tee flange 2 is fixed to the positioning seat 4 by a pad block 3, and the top of the tee flange 2 is fixed by the pressure head 1.
[0030] Working principle: This tee flange clamp is designed with a specially designed rotary chuck positioning structure. Its working principle is mainly to provide effective support and guarantee for the positioning, clamping and processing of tee flanges by realizing functions such as positioning and support, stability and protection, as well as convenience and efficiency.
[0031] Working method: The flange blank is placed manually or by robot on the lower positioning seat of the tee flange positioning fixture. The hydraulic chuck drives the upper pressure head of the tee flange positioning fixture to clamp the flange blank, and then turning is performed. After machining one plane, the rotary chuck automatically rotates 90° to machine the side, and then automatically rotates 90° to machine the rear. A total of 270° rotations are performed to machine 3 planes.
[0032] This utility model of a hot-forged tee flange machining positioning fixture facilitates flange clamping and positioning, enabling rapid positioning, clamping, and machining, thus supporting intelligent manufacturing in factories. The fixture is made of robust and durable materials to ensure it is not easily deformed or damaged during use. The fixture design fully considers ease of use and efficiency, effectively preventing flange movement or misalignment during machining. The combination of the tee flange fixture and rotary chuck effectively reduces machining steps, making product machining more stable; it also reduces time costs and improves production convenience. The bolt-fastening baffle design saves on fixture machining costs, transforming the complex contouring fixture machining of machining centers into a simple combination of baffles and bolts, greatly reducing production costs.
[0033] This utility model presents a positioning fixture for hot-forged tee flange processing. It employs a structural design suitable for the shape of tee flanges, making the fixture more stable and reliable when supporting them. By optimizing the shape, size, and material of the fixture, it can effectively support tee flange workpieces of different specifications and weights, ensuring no shaking occurs during processing. Furthermore, the new tooling eliminates the need for repeated removal and re-clamping of the blank. Through its rational structural design, the processing time is significantly reduced, improving processing accuracy, efficiency, and stability.
[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.
Claims
1. A positioning fixture for machining hot-forged tee flanges, characterized in that: The device includes a tee flange, a pressure head located at one end of the tee flange, and a positioning seat located at the other end of the tee flange. The end of the tee flange and the pressure head connected to each other has a connection hole. The pressure head has a connecting part. The tee flange and the pressure head are detachably connected through the cooperation of the connecting part and the connecting hole. A gasket is provided between the positioning seat and the tee flange. A baffle is provided on the positioning seat. The baffle has multiple protrusions.
2. The hot forging tee flange machining positioning fixture according to claim 1, characterized in that: A first blind hole is provided on the outer surface of the connecting part, and a second blind hole is provided on the wall of the connecting hole. The opening position of the second blind hole corresponds to the opening position of the first blind hole. An elastic member and a limiting member are provided in the second blind hole. One end of the elastic member is connected to the wall of the second blind hole, and the other end of the elastic member is connected to the limiting member. At least part of the limiting member is exposed to the outside through the second blind hole and can extend into the first blind hole.
3. The hot forging tee flange machining positioning fixture according to claim 2, characterized in that: The limiting member is a spherical structure, and the elastic member is a spring.
4. The hot forging tee flange machining positioning fixture according to claim 3, characterized in that: The elastic element is a columnar structure made of silicone or rubber material.
5. The hot forging tee flange machining positioning fixture according to claim 4, characterized in that: The number of first blind holes is multiple, and the number of second blind holes corresponds to the number of first blind holes.
6. The hot forging tee flange machining positioning fixture according to claim 5, characterized in that: The pad is fixedly connected to the positioning seat by four first screws.
7. The hot forging tee flange machining positioning fixture according to claim 6, characterized in that: The baffle is fixedly connected to the positioning seat by four second screws.
8. The hot forging tee flange machining positioning fixture according to claim 7, characterized in that: The back of the tee flange is in contact with the baffle.