A tooling for tongs work
Patent Information
- Application Number
- CN202522629217.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-11
AI Technical Summary
[0003]但在加工工件内侧离端面较远的多组孔时，传统工装整体刚性不足，加工中易震刀导致精度偏差；同时无定位结构，加工多组孔需反复拆卸调整工件，既产生人工划线、测量的累积误差，又大幅延长加工时间，难以满足此类复杂位置多组孔的精准、高效加工需求
[0013]由于采用了上述技术方案，本实用新型相对现有技术来说，取得的技术进步是：
Smart Images
Figure CN224913654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a tooling for fitter work. Background Technology
[0002] Traditional fitter tooling is widely used in the fitter work field of machinery manufacturing and equipment maintenance. Its core function is to provide positioning reference and machining guidance for fitter machining (such as hole and thread machining), reduce human operation deviation, and ensure machining dimensional and positional accuracy. At the same time, it can undertake machining tasks that machine tools cannot handle due to limitations in tool length and workpiece structure, share the machine tool load, improve machine tool utilization, and help standardize and ensure consistency in batch parts processing.
[0003] However, when machining multiple sets of holes on the inner side of a workpiece that are far from the end face, traditional tooling lacks overall rigidity and is prone to vibration during machining, leading to accuracy deviations. At the same time, without a positioning structure, machining multiple sets of holes requires repeated disassembly and adjustment of the workpiece, which not only generates cumulative errors from manual scribing and measurement but also significantly extends the machining time, making it difficult to meet the precise and efficient machining requirements of multiple sets of holes in such complex locations. Utility Model Content
[0004] This utility model provides a tooling for fitter work to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A tooling for fitter work includes a tooling body, the tooling body including a mounting base plate, a positioning boss fixedly connected to the top of the mounting base plate, a positioning post fixedly connected to the top of the mounting base plate and inside the positioning boss, and a reinforcing rib fixedly connected to the side of the positioning post and at the bottom of the mounting base plate; a positioning assembly including a sector plate, one end of the sector plate having a positioning hole, and the end of the sector plate away from the positioning hole having a screw hole.
[0006] A further improvement of the present invention is that the tooling body further includes a connecting pipe, one end of which is fixedly connected to the surface of the positioning column, and the other end of which is fixedly connected to a rotating column, and the surface of the mounting base plate is provided with a through hole.
[0007] A further improvement of the present invention is that the positioning component further includes a drill sleeve, the surface of which is connected to the internal thread of the screw hole.
[0008] A further improvement of this utility model is that a positioning screw is inserted into the positioning hole, and the lower end of the positioning screw is threadedly connected to the top of the positioning post.
[0009] A further improvement of this utility model is that: the end of the sector plate is sleeved with the top of the rotating column, and a nut is attached to the top of the sector plate near the rotating column, and the inner wall of the nut is threadedly connected to the top of the rotating column.
[0010] A further improvement of this utility model is that the mounting base plate is made of Q235B carbon structural steel, and the positioning column, connecting pipe, rotating column and positioning screw are all made of No. 45 steel. The positioning screw has a surface hardness of HRC40-45° after heat treatment, and the drill bushing has a surface hardness of HRC55-60° after heat treatment and is treated with blackening and rust prevention.
[0011] A further improvement of this utility model is that: the outer circular surface of the positioning boss is in transition fit with the precision boring hole of the workpiece; four sets of screw holes are evenly distributed along the circumference of the sector plate; and two sets of reinforcing ribs are evenly distributed along the circumference of the positioning column.
[0012] A further improvement of this utility model is that the reinforcing ribs are fully welded to the mounting base plate and the positioning columns, thereby enhancing the overall rigidity of the tooling. Five sets of positioning columns are evenly distributed along the circumference of the mounting base plate.
[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: This utility model provides a tooling for bench work. The mounting base plate is made of Q235B steel to ensure basic rigidity, while the positioning posts and connecting pipes are made of 45# steel and reinforced by heat treatment. Five sets of fully welded reinforcing ribs and connecting pipes further strengthen the connection between the positioning posts and the rotating posts, significantly improving the overall rigidity of the tooling. This effectively prevents tool vibration during machining, ensuring the accuracy of hole machining. Simultaneously, the fan-shaped plate can rotate around the rotating post, and four evenly distributed screw holes correspond to multiple holes on the workpiece. The rotation position is quickly locked through the positioning holes and positioning screws, eliminating the need for repeated disassembly and adjustment of the workpiece. Furthermore, the positioning boss and the workpiece's precision boring hole have a smooth transition fit, and the drill bushing provides machining guidance, completely reducing the cumulative error of manual scribing and measurement, significantly shortening machining time, and meeting the precise and efficient machining requirements for multiple holes in complex positions. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is an exploded view of the positioning component of this utility model; Figure 4 This is a schematic diagram of the fan-shaped plate structure of this utility model; Figure 5 This is a schematic diagram of the workpiece structure to be processed according to this utility model.
[0015] In the diagram: 11. Mounting base plate; 12. Positioning boss; 13. Positioning post; 14. Reinforcing rib; 15. Connecting pipe; 16. Rotating post; 17. Through hole; 21. Sector plate; 22. Positioning hole; 23. Screw hole; 24. Drill sleeve; 25. Positioning screw; 26. Nut. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to embodiments: Example 1, as Figures 1-5 As shown, this utility model provides a tooling for fitter work, including a tooling body, the tooling body including a mounting base plate 11, a positioning boss 12 fixedly connected to the top of the mounting base plate 11, a positioning post 13 fixedly connected to the top of the mounting base plate 11 and inside the positioning boss 12, and a reinforcing rib 14 fixedly connected to the side of the positioning post 13 and at the bottom of the mounting base plate 11; a positioning assembly, the positioning assembly including a sector plate 21, a positioning hole 22 opened at one end of the sector plate 21, and a screw hole 23 opened at the end of the sector plate 21 away from the positioning hole 22.
[0017] In this embodiment, by fitting the workpiece to the mounting base plate 11, the outer circular surface of the positioning boss 12 forms a transition fit with the pre-set precision boring hole of the workpiece. At the same time, the positioning hole on the inner side of the mounting base plate 11 is aligned with the oil hole on the workpiece, achieving radial precision positioning of the fixture and the workpiece. Subsequently, screws are inserted through the through holes 17 on the surface of the mounting base plate 11 to fix the workpiece on the fixture, preventing the fixture from shifting during processing. The positioning post 13, connecting pipe 15, rotating post 16, and positioning screw 25 are all made of 45 steel, and the positioning screw has a surface hardness of HRC40-45° after heat treatment. The two ends of the connecting pipe 15 are fixed to the positioning post and the rotating post respectively, forming a rigid support system of "positioning post-connecting pipe-rotating post". The circumferentially distributed reinforcing ribs further disperse the processing stress.
[0018] Example 2, as Figures 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the tooling body further includes a connecting pipe 15, one end of the connecting pipe 15 is fixedly connected to the surface of the positioning column 13, and the other end of the connecting pipe 15 is fixedly connected to a rotating column 16. A through hole 17 is opened on the surface of the mounting base plate 11. The positioning assembly also includes a drill sleeve 24, the surface of the drill sleeve 24 is threadedly connected to the inside of the screw hole 23, a positioning screw 25 is inserted into the inside of the positioning hole 22, the lower end of the positioning screw 25 is threadedly connected to the top of the positioning column 13, the end of the sector plate 21 is sleeved with the top of the rotating column 16, and a nut 26 is overlapped on the top of the sector plate 21 near the rotating column 16. The inner wall of the nut 26 is threadedly connected to the top of the rotating column 16.
[0019] In this embodiment, the positioning components are adjusted according to the hole machining type: if machining a bottom hole, the drill bushing 24 is threaded into the screw hole 23 of the sector plate 21, and the inner wall of the drill bushing provides precise guidance for machining; if machining a countersunk hole or a threaded hole, the drill bushing is removed directly, and the dimensional accuracy of the screw hole itself is used as the machining reference. Then, the end of the sector plate 21 is fitted onto the top of the rotating column 16, and the nut 26 is initially tightened so that the sector plate can rotate slightly but not wobble, in preparation for subsequent rotational positioning. The positioning screw 25 is passed through the positioning hole 22 of the sector plate and threaded to the top of the positioning column 13 to achieve circumferential fixation of the sector plate. At this time, the screw hole 23 on the sector plate and the drill bushing are exactly aligned with the position of the first set of holes to be machined on the workpiece. During machining, a handheld power tool, such as a drill bit or tap, is fed along the inner wall of the drill bushing or the screw hole. The guiding effect of the drill bushing can prevent the tool from deviating, ensuring the dimensional accuracy and positional accuracy of the hole, while eliminating the cumulative error caused by manual scribing and measurement.
[0020] Example 3, as Figures 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the mounting base plate 11 is made of Q235B carbon structural steel, and the positioning post 13, connecting pipe 15, rotating post 16 and positioning screw 25 are all made of No. 45 steel. The positioning screw 25 is heat-treated to achieve a surface hardness of HRC40-45°. The drill sleeve 24 is heat-treated to achieve a surface hardness of HRC55-60° and is blackened and rust-proofed. The outer circular surface of the positioning boss 12 is in transition fit with the precision boring hole of the workpiece. There are 4 sets of screw holes 23 evenly distributed along its circumference on the fan-shaped plate 21. There are 2 sets of reinforcing ribs 14 evenly distributed along the circumference of the positioning post 13. The reinforcing ribs 14 are fully welded to the mounting base plate 11 and the positioning post 13 to enhance the overall rigidity of the tooling. Five sets of positioning posts 13 are evenly distributed along the circumference of the mounting base plate 11.
[0021] In this embodiment, after completing the machining of the first set of holes, there is no need to disassemble the tooling and workpiece. Simply loosen the nut 26 and the positioning screw 25 to push the sector plate 21 to rotate around the axis of the rotating column 16. When the screw hole 23 on the sector plate is aligned with the next set of holes to be machined on the workpiece, reinsert the positioning screw 25 and the positioning column 13 to lock them in place. After tightening the nut 26, the machining of the next set of holes can be carried out. The entire process does not require repeated adjustment of the workpiece position, which greatly shortens the process switching time and achieves efficient and precise machining of multiple sets of far-distance holes on the inner side of the workpiece.
[0022] The working principle of this tooling used for fitter work will be explained in detail below.
[0023] like Figures 1-5As shown, the workpiece is fitted onto the mounting base plate 11, so that the outer circular surface of the positioning boss 12 forms a transition fit with the pre-set precision boring hole of the workpiece. At the same time, the positioning hole on the inner side of the mounting base plate 11 is aligned with the oil hole on the workpiece, achieving precise radial positioning of the fixture and the workpiece. Then, screws are inserted through the through holes 17 on the surface of the mounting base plate 11 to fix the workpiece on the fixture, preventing the fixture from shifting during processing. The positioning pin 13, connecting pipe 15, rotating pin 16, and positioning screw 25 are all made of 45# steel, and the positioning screws have a surface hardness of HR after heat treatment. At C40-45°, the two ends of the connecting pipe 15 are fixed to the positioning post and the rotating post respectively, forming a rigid support system of "positioning post-connecting pipe-rotating post". This, combined with circumferentially distributed reinforcing ribs, further disperses processing stress. Depending on the hole machining type, adjust the positioning components: if machining a bottom hole, thread the drill bushing 24 into the screw hole 23 of the sector plate 21; the inner wall of the drill bushing provides precise guidance for machining. If machining a countersunk hole or threaded hole, directly remove the drill bushing, using the dimensional accuracy of the screw hole itself as the machining reference, and then fit the end of the sector plate 21 onto... Rotate the top of the rotating column 16 and initially tighten the nut 26 to allow the sector plate to rotate slightly without wobbling, preparing for subsequent rotational positioning. Pass the positioning screw 25 through the positioning hole 22 of the sector plate and thread it onto the top of the positioning column 13 to achieve circumferential fixation of the sector plate. At this point, the screw hole 23 on the sector plate and the drill bushing are precisely aligned with the position of the first set of holes to be machined on the workpiece. During machining, use a handheld power tool, such as a drill bit or tap, to feed along the inner wall of the drill bushing or screw hole. The guiding action of the drill bushing prevents tool deviation, ensuring the dimensional and positional accuracy of the holes, while also preventing... Eliminating the cumulative errors caused by manual scribing and measurement, after completing the machining of the first set of holes, there is no need to disassemble the tooling and workpiece. Simply loosen the nut 26 and the positioning screw 25 to push the sector plate 21 to rotate around the axis of the rotating column 16. When the screw hole 23 on the sector plate is aligned with the next set of holes to be machined on the workpiece, reinsert the positioning screw 25 and the positioning column 13 to lock them in place. After tightening the nut 26, the machining of the next set of holes can begin. The entire process does not require repeated adjustment of the workpiece position, greatly shortening the process changeover time and enabling efficient and precise machining of multiple sets of far-distance holes on the inner side of the workpiece.
[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A tooling for fitter work, characterized in that: include The tooling body includes a mounting base plate (11), a positioning boss (12) is fixedly connected to the top of the mounting base plate (11), a positioning column (13) is fixedly connected to the top of the mounting base plate (11) and inside the positioning boss (12), and a reinforcing rib (14) is fixedly connected to the side of the positioning column (13) and at the bottom of the mounting base plate (11). The positioning component includes a sector plate (21), one end of which is provided with a positioning hole (22), and the other end of which is away from the positioning hole (22) is provided with a screw hole (23).
2. The tooling for fitter work according to claim 1, characterized in that: The tooling body also includes a connecting pipe (15), one end of which is fixedly connected to the surface of the positioning column (13), and the other end of which is fixedly connected to a rotating column (16). The surface of the mounting base plate (11) is provided with a through hole (17).
3. The tooling for fitter work according to claim 1, characterized in that: The positioning component also includes a drill sleeve (24), the surface of which is threadedly connected to the inside of the screw hole (23).
4. The tooling for fitter work according to claim 1, characterized in that: A positioning screw (25) is inserted into the inside of the positioning hole (22), and the lower end of the positioning screw (25) is threadedly connected to the top of the positioning post (13).
5. A tooling for fitter work according to claim 1, characterized in that: The end of the sector plate (21) is sleeved with the top of the rotating column (16). A nut (26) is attached to the top of the sector plate (21) near the rotating column (16). The inner wall of the nut (26) is threaded to the top of the rotating column (16).
6. The tooling for fitter work according to claim 1, characterized in that: The mounting base plate (11) is made of Q235B carbon structural steel. The positioning column (13), connecting pipe (15), rotating column (16) and positioning screw (25) are all made of No. 45 steel. The positioning screw (25) has a surface hardness of HRC40-45° after heat treatment. The drill bushing (24) has a surface hardness of HRC55-60° after heat treatment and is treated with blackening and rust prevention.
7. The tooling for fitter work according to claim 1, characterized in that: The outer circular surface of the positioning boss (12) is in transition fit with the precision boring hole of the workpiece. The screw holes (23) on the fan-shaped plate (21) are evenly distributed in 4 groups along its circumference. The reinforcing ribs (14) are provided in 2 groups and are evenly distributed along the circumference of the positioning column (13).
8. A tooling for fitter work according to claim 1, characterized in that: The reinforcing rib (14) is fully welded to the mounting base plate (11) and the positioning column (13) to enhance the overall rigidity of the tooling. Five sets of positioning columns (13) are evenly arranged along the circumference of the mounting base plate (11).