Thread rolling cutter head
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宁波德桦金属制品有限公司
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing thread rolling cutters have poor versatility when machining cylinder threads of different sizes and specifications, resulting in significant processing limitations and making it difficult to adapt to the machining of cylinder threads of different sizes and specifications.
A thread rolling cutter head was designed. By setting a thread rolling channel on the rolling mounting base and symmetrically installing thread rolling cutter assemblies on both sides, the spacing between the thread rolling wheels can be adjusted by using an adjusting screw and a fastening slide structure, which can adapt to the thread processing of workpieces of different sizes.
It improves the versatility and flexibility of thread processing, enabling it to adapt to the thread processing of cylinder barrels of different sizes and specifications, reducing processing limitations, and improving production efficiency and processing quality.
Smart Images

Figure CN224273124U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thread rolling cutter head technology, specifically thread rolling cutter head. Background Technology
[0002] In hydraulic systems, the hydraulic cylinder is a crucial actuator, and its performance directly affects the system's operational stability and reliability. The cylinder barrel, as a key component, plays a decisive role in the cylinder's sealing performance, connection strength, and overall service life, particularly in the machining quality of its threads.
[0003] Traditional methods for machining cylinder threads, such as turning, have many drawbacks. During turning, the cutting tool cuts the material, severing its fibrous structure and reducing the strength at the root of the thread. Under high pressure or frequent impact loads, fatigue cracks are likely to occur, leading to cylinder leakage or even failure. Moreover, turning is inefficient, and the cutting tool wears out quickly. Frequent tool replacements not only increase production costs but also reduce production efficiency. Furthermore, the surface roughness of the threads obtained by turning is relatively high, which is not conducive to tight fit with other components and affects the sealing performance of the cylinder.
[0004] Therefore, for the machining of threads on cylinder barrels, existing factories use thread rolling technology to process cylinder barrel threads. However, conventional thread rolling cutters are relatively fixed in actual use and are difficult to apply to the machining of cylinder barrel threads of different sizes and specifications, resulting in poor processing versatility and significant limitations in use. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a thread rolling cutter head, which solves the problem that existing factories use thread rolling technology to process cylinder threads, but conventional thread rolling cutter heads are difficult to apply to cylinder thread processing of different sizes and specifications due to their relatively fixed rolling cutter heads, resulting in poor processing versatility and significant limitations in use.
[0006] This utility model provides the following technical solution: a thread rolling cutter head, including a rolling mounting base, a thread rolling channel is provided in the middle of the top of the rolling mounting base, thread rolling cutter assemblies are symmetrically arranged on both sides of the thread rolling channel, a mounting base connecting block is fixed at the bottom of the rolling mounting base, and two mounting holes are symmetrically opened on the mounting base connecting block.
[0007] The thread rolling cutter assembly includes a side wall mounting slot formed in the inner wall of the thread rolling channel. Two adjusting and fastening slide grooves are symmetrically formed on the two side walls of the side wall mounting slot, and two limiting slide grooves are symmetrically formed on the bottom wall of the side wall mounting slot. A cutter mounting housing is inserted into the side wall mounting slot. A thread rolling wheel is inserted into the side of the cutter mounting housing. A rotating connecting column is provided in the middle of both sides of the thread rolling wheel. The rotating connecting column is rotatably connected to the inner wall of the cutter mounting housing through bearings. Two adjusting screws are symmetrically fixed on both sides of the cutter mounting housing.
[0008] Preferred technical solution 1: The adjusting screws all pass through the adjusting and fastening groove, and the ends of the adjusting screws are fitted with fastening nuts.
[0009] Preferred technical solution 2: Two limiting sliders are symmetrically arranged at the bottom end of the tool mounting housing, and the limiting sliders are slidably inserted into the limiting groove.
[0010] Preferred technical solution 3: The inner cavity of the tool mounting housing is semi-circular.
[0011] This solution enables a closer fit between the thread rolling wheel and the tool mounting housing.
[0012] Preferred technical solution four: The diameter of the adjusting screw is the same as the inner diameter of the adjusting fastening groove.
[0013] This design ensures greater stability after the adjusting screw passes through the adjusting and fastening groove.
[0014] Preferred technical solution five: The longitudinal sections of both the limiting slider and the limiting groove are trapezoidal.
[0015] This solution enables the limit slider to be effectively limited when it is slidably inserted into the limit groove.
[0016] Compared with the prior art, the present invention provides a thread rolling cutter head, which has the following advantages:
[0017] (1) This utility model provides a thread rolling channel on the rolling mounting base and two thread rolling tool assemblies are symmetrically arranged on both sides of the thread rolling channel. The user can adjust the processing distance between the two thread rolling wheels in the thread rolling tool assembly by adjusting the sliding position of the adjusting screw in the adjusting fastening groove. This allows the user to process the surface threads of workpieces of different sizes, making the overall processing more versatile and convenient for the user to use the thread processing flexibly. Attached Figure Description
[0018] Figure 1This is a three-dimensional structural schematic diagram of the present invention;
[0019] Figure 2 For the present utility model Figure 1 Schematic diagram of the structure of the thread rolling channel;
[0020] Figure 3 For the present utility model Figure 1 Exploded view of the structure of the thread rolling tool assembly;
[0021] Figure 4 For the present utility model Figure 3 Enlarged view of the middle limit slider structure.
[0022] In the diagram: 1. Thread rolling mounting base; 2. Thread rolling channel; 3. Thread rolling cutter assembly; 4. Mounting base connecting block; 5. Mounting socket;
[0023] 301. Side wall mounting groove; 302. Adjusting and fastening slide groove; 303. Limiting slide groove; 304. Tool mounting housing; 305. Thread rolling wheel; 306. Rotating connecting column; 307. Adjusting screw; 308. Fastening nut; 309. Limiting slider. Detailed Implementation
[0024] Please see Figure 1-4 ,
[0025] Example 1: Thread rolling cutter head, including rolling mounting base 1, thread rolling channel 2 is provided in the middle of the top of the rolling mounting base 1, thread rolling cutter assembly 3 is symmetrically arranged on both sides of the thread rolling channel 2, and mounting base connecting block 4 is fixed at the bottom of the rolling mounting base 1. Two mounting holes 5 are symmetrically opened on the mounting base connecting block 4.
[0026] The thread rolling cutter assembly 3 includes a side wall mounting slot 301 formed in the inner wall of the thread rolling channel 2. Two adjusting and fastening slide grooves 302 are symmetrically formed on the two side walls of the side wall mounting slot 301. Two limiting slide grooves 303 are symmetrically formed on the bottom wall of the side wall mounting slot 301. A cutter mounting housing 304 is inserted into the side wall mounting slot 301. Thread rolling wheels 305 are inserted into the side of the cutter mounting housing 304. Rotating connecting columns 306 are provided in the middle of both sides of the thread rolling wheels 305. The rotating connecting columns 306 are rotatably connected to the inner wall of the cutter mounting housing 304 through bearings. Two adjusting screws 307 are symmetrically fixed on both sides of the cutter mounting housing 304. The adjusting screws 307 all pass through the adjusting and fastening slide grooves 302. Fastening nuts 308 are sleeved on the ends of the adjusting screws 307. Two limiting sliders 309 are symmetrically arranged at the bottom end of the cutter mounting housing 304. The limiting sliders 309 are slidably inserted into the limiting slide grooves 303.
[0027] Example 2: The difference between this example and Example 1 is that the inner cavity of the tool mounting housing 304 is semi-circular.
[0028] This makes the installation between the thread rolling wheel 305 and the tool mounting housing 304 more secure.
[0029] Example 3: The difference between this example and Example 1 is that the diameter of the adjusting screw 307 is the same as the inner diameter of the adjusting fastening groove 302.
[0030] This makes the adjusting screw 307 more stable after passing through the adjusting and fastening groove 302.
[0031] Example 4: The difference between this example and Example 1 is that the longitudinal sections of both the limiting slider 309 and the limiting groove 303 are trapezoidal.
[0032] This allows the limiting slider 309 to slide and be effectively limited in the limiting groove 303.
[0033] In this embodiment, existing factories use thread rolling technology to process cylinder threads. However, conventional thread rolling cutters are relatively fixed and difficult to apply to cylinder threads of different sizes and specifications, resulting in poor processing versatility and significant limitations in their use.
[0034] In summary, in specific implementation, a threaded rolling channel 2 is provided at the top of the rolling mounting base 1, and two threaded rolling cutter assemblies 3 are symmetrically arranged on both sides of the threaded rolling channel 2. The threaded rolling wheels 305 in the threaded rolling cutter assembly 3 are rotatably mounted in the cutter mounting housing 304 through the rotating connecting column 306 and the bearing. Two adjusting screws 307 are symmetrically arranged on both sides of the cutter mounting housing 304. The adjusting screws 307 slide through the adjusting fastening groove 302, which makes it more convenient to adjust the distance between the two threaded rolling wheels 305.
[0035] The user only needs to adjust the position of the adjusting screw 307 in the adjusting and fastening groove 302, and then put the fastening nut 308 on the end of the adjusting screw 307. The fastening nut 308 abuts against the outer side of the rolling mounting seat 1, so that the distance between the two thread rolling wheels 305 can be properly adjusted and then fastened on the rolling mounting seat 1. This allows the thread rolling wheels 305 to be adapted to the threads required to be processed on workpieces of different sizes of cylinder barrels, thus making them suitable for thread processing of cylinder barrels of different sizes and specifications. This makes the processing more versatile and more convenient for users to use in flexible thread processing.
Claims
1. Thread-rolling tool head comprising a rolling mounting (1), characterized in that: The top center of the rolling mounting base (1) is provided with a threaded rolling channel (2), and threaded rolling cutter assemblies (3) are symmetrically arranged on both sides of the threaded rolling channel (2). The bottom end of the rolling mounting base (1) is fixed with a mounting base connecting block (4), and two mounting holes (5) are symmetrically opened on the mounting base connecting block (4). The thread rolling cutter assembly (3) includes a side wall mounting slot (301) formed on the inner wall of the thread rolling channel (2). Two adjusting and fastening slide grooves (302) are symmetrically formed on the two side walls of the side wall mounting slot (301). Two limiting slide grooves (303) are symmetrically formed on the bottom wall of the side wall mounting slot (301). A cutter mounting housing (304) is inserted into the side wall mounting slot (301). A thread rolling wheel (305) is inserted into the side of the cutter mounting housing (304). A rotating connecting column (306) is provided in the middle of both sides of the thread rolling wheel (305). The rotating connecting column (306) is rotatably connected to the inner wall of the cutter mounting housing (304) through a bearing. Two adjusting screws (307) are symmetrically fixed on both sides of the cutter mounting housing (304).
2. The thread rolling tool head according to claim 1, characterized in that: The adjusting screws (307) all pass through the adjusting fastening grooves (302), and the ends of the adjusting screws (307) are fitted with fastening nuts (308).
3. The thread rolling cutter head according to claim 2, characterized in that: Two limiting sliders (309) are symmetrically arranged at the bottom end of the tool mounting housing (304), and the limiting sliders (309) are slidably inserted into the limiting groove (303).
4. The thread rolling cutter head according to claim 3, characterized in that: The inner cavity of the tool mounting housing (304) is semi-circular.
5. The thread rolling cutter head according to claim 4, characterized in that: The diameter of the adjusting screw (307) is the same as the inner diameter of the adjusting fastening groove (302).
6. The thread rolling cutter head according to claim 5, characterized in that: The longitudinal sections of both the limiting slider (309) and the limiting groove (303) are trapezoidal.