An adjustable stroke guide structure and punch slide guide structure
By adopting a recirculating roller design in the stamping equipment, the problem of limited stroke of the guide structure is solved, the adjustability and versatility of the guide structure are realized, and the flexibility and production efficiency of the equipment are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG SEFTEC PRECISION MACHINERY MANUFACTURING CO LTD
- Filing Date
- 2026-04-16
- Publication Date
- 2026-06-05
AI Technical Summary
The stroke of the guide structure of existing stamping equipment is limited by the length of the guide sleeve, which cannot adapt to the needs of various stroke lengths. This makes it cumbersome to replace the guide sleeve components and makes it difficult to meet the flexibility and efficiency requirements of multi-variety, small-batch production.
It adopts a recirculating roller design, in which the rollers roll in the circulating raceway inside the guide sleeve. The guide column cooperates with the circulating raceway inside the guide sleeve through the rolling block assembly. The stroke is limited by the guide seat, which avoids the stroke being limited by the length of the guide sleeve and realizes adjustable stroke.
It improves the versatility and adaptability of the guide structure, simplifies the stroke adjustment process, and enhances the flexibility and production efficiency of stamping equipment.
Smart Images
Figure CN122142183A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stamping machinery technology, and more specifically, to an adjustable stroke guide structure and a punch press slide guide structure. Background Technology
[0002] As a core component of stamping equipment, the guide structure of a punch press directly affects the precise control of the slide's motion trajectory and the quality stability of the stamped product. In high-precision stamping processes, the guide structure must not only ensure the slide runs smoothly along a straight path, reducing runout and vibration, but also flexibly adapt to the stroke variations required for different workpieces. Traditional guide schemes generally employ a structure of sliding bearings or rolling bearings in conjunction with guide posts and guide sleeves. Among these, rolling guides are widely used in precision stamping due to their advantages such as low frictional resistance and fast dynamic response. However, existing rolling guide designs have significant drawbacks: the cage of the rolling element must move synchronously with the axial displacement of the guide post, resulting in the cage's range of motion being completely limited by the physical length of the guide sleeve.
[0003] This structural limitation restricts the effective stroke of the guide pillars from exceeding the guide sleeve dimensions. When production demands involve multiple stroke specifications, operators must replace the entire guide sleeve assembly or adjust related components, a cumbersome and time-consuming process. For example, the four-guide-pillar punch press die holder disclosed in Chinese utility model patent CN218693354U requires a sand holder (functionally equivalent to a retainer) between the guide pillars and the sleeve to slide within the sleeve. The movement distance of the sand holder is strictly constrained by the height of the sleeve. Therefore, if the stamping stroke needs to be changed, a matching sleeve and auxiliary structure must be custom-made, making rapid switching of production parameters impossible. This problem is particularly prominent in multi-variety, small-batch production scenarios, severely restricting the process adaptability and production efficiency of punch presses, making existing guide structures unable to meet the urgent needs of modern stamping industry for equipment flexibility and versatility.
[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention
[0005] The purpose of this application is to provide an adjustable stroke guide structure and a punch press slide guide structure. By setting the rolling element as a roller that can circulate within the circulating raceway, and fixing the base supporting the roller inside the guide sleeve, the roller can achieve rolling guidance solely through its own rotation and circulatory movement along the circulating raceway without the need for the base to rise or fall as it moves with the guide column. Therefore, the stroke of the guide structure is no longer limited by the movement range of the cage, making it applicable to various stroke lengths and significantly improving the versatility and adaptability of the guide structure.
[0006] Firstly, this application discloses a guide structure with adjustable stroke, the technical solution of which is as follows:
[0007] include:
[0008] - The guide post has multiple axially extending cross-sections on its outer wall;
[0009] - Guide sleeve, fitted over the outside of the guide post;
[0010] - A rolling block assembly is fixedly installed inside the guide sleeve. The rolling block assembly includes a base and a circulating raceway on the base. Multiple rollers that can circulate are installed in the circulating raceway. Each roller corresponds to a tangential surface of the guide post and makes rolling contact.
[0011] - Guide seat, fixedly mounted at the end of the guide sleeve, is used to limit the axial movement stroke of the guide post.
[0012] Furthermore, this application also proposes that the number of rolling block assemblies is the same as the number of cross-sections of the guide post, with each rolling block assembly corresponding to one cross-section.
[0013] Furthermore, this application also proposes that the base of the rolling block assembly is elongated and has at least one mounting groove, a circulating raceway body is provided in the mounting groove, a circulating raceway is provided inside the circulating raceway body, and multiple rollers are installed in the circulating raceway and can circulate along the circulating raceway.
[0014] Furthermore, this application also proposes that on the base of each rolling block assembly, multiple mounting slots and corresponding circulating raceways are arranged at intervals along the axial direction. Each circulating raceway and the rollers inside it form a rolling support unit. Multiple rolling support units are distributed at intervals along the axial direction and make rolling contact with the corresponding tangential surface together.
[0015] Furthermore, this application also proposes that the roller is cylindrical, with its axis direction perpendicular to the axis direction of the guide post, and the roller rotates in the circulating raceway while circulating along the circulating raceway.
[0016] Furthermore, this application also proposes that the cross-section is planar and arranged uniformly or non-uniformly along the circumference of the guide post.
[0017] Furthermore, this application proposes that the guide post has an upper column with a larger diameter and a lower column with a smaller diameter, and a stepped surface is formed between the upper column and the lower column; the tangent is provided on the outer peripheral wall of the lower column; a limiting structure is provided on the guide seat, and the limiting structure cooperates with the stepped surface to limit the maximum stroke of the guide post moving downward.
[0018] Furthermore, this application also proposes that the limiting structure is an annular baffle, which is fixedly installed on the inner wall of the annular opening at the lower end of the guide seat, and is used to abut against the step surface to limit the axial displacement of the guide post.
[0019] Furthermore, this application also proposes that the guide seat has an inner cavity for accommodating the upper section of the guide post and allowing the guide post to move axially up and down within the inner cavity.
[0020] Secondly, this application also discloses a punch press slide guide structure, the technical solution of which is as follows:
[0021] This includes the aforementioned adjustable travel guide structure.
[0022] As can be seen from the above, the adjustable stroke guide structure and punch press slide guide structure provided in this application, through the fixedly set rolling block assembly and circulating raceway, allow the roller to roll on the guide post sectional surface, allowing the guide post to move freely axially, and the stroke is limited by the guide seat, thereby overcoming the problem of the stroke being limited by the guide sleeve length in the prior art. It has the advantages of adjustable stroke, no need to replace the guide sleeve assembly, and significantly improved flexibility and production efficiency of the stamping equipment. Attached Figure Description
[0023] Figure 1 A three-dimensional schematic diagram of an adjustable travel guide structure provided in this application.
[0024] Figure 2 A side view of an adjustable travel guide structure provided in this application.
[0025] Figure 3 A schematic diagram of the axial surface of an adjustable stroke guide structure provided in this application.
[0026] Figure 4 This is a schematic diagram of the assembly of the guide sleeve and the rolling block assembly.
[0027] Figure 5 This is a schematic diagram of the guide post structure.
[0028] Figure 6 This is a schematic diagram of the structure of a scroll block component. Detailed Implementation
[0029] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] Traditional punch press guide structures, while providing stable linear motion, typically require the rolling element's cage to move with the guide post. This severely limits the guide stroke to the guide sleeve length, making them unsuitable for stamping requirements with varying stroke lengths and resulting in poor versatility. To change the punch press stroke, guide sleeves of different lengths and corresponding components must be replaced, which is inconvenient and makes it difficult to meet the rapid switching requirements of various stamping processes.
[0032] Example 1:
[0033] like Figure 1-6 As shown, this application proposes a guide structure with adjustable stroke, comprising:
[0034] The guide post 1 has multiple axially extending cross-sections 2 on its outer wall;
[0035] Guide sleeve 3 is fitted onto the outside of guide post 1;
[0036] The rolling block assembly 4 is fixedly disposed inside the guide sleeve 3. The rolling block assembly 4 includes a base 5 and a circulating raceway 6 disposed on the base 5. Multiple rollers 7 that can circulate and roll are installed in the circulating raceway 6. Each roller 7 corresponds to a cross-section 2 of the guide post 1 and rolls in contact with it.
[0037] The guide seat 8 is fixedly disposed at the end of the guide sleeve 3 and is used to limit the axial movement stroke of the guide post 1.
[0038] By fixing the rolling block assembly 4 inside the guide sleeve 3 and making the roller 7 circulate within the circulating raceway 6, the guide stroke is no longer limited by the movement range of the cage, thereby improving the versatility and adaptability of the guide structure.
[0039] For ease of understanding, the following explains some key terms in this embodiment:
[0040] Guide post 1 refers to a rod used in a mechanical system to provide linear motion guidance. In this application, guide post 1 is the core component for achieving axial movement, and the cross-section 2 on its outer wall cooperates with a rolling element to achieve low-friction rolling guidance.
[0041] The cross-section 2 refers to the plane or micro-arc surface extending axially on the outer wall of the guide post 1. These cross-sections 2 provide the rolling contact surface for the rolling elements and are the key structure for realizing the rolling guidance between the guide post 1 and the guide sleeve 3.
[0042] Guide sleeve 3 refers to the cylindrical component that is sleeved on the outside of guide post 1. The guide sleeve 3 houses the rolling block assembly 4 and together with the guide post 1, forms the main body of the guiding structure.
[0043] The rolling block assembly 4 refers to the component fixedly installed inside the guide sleeve 3, used to support and guide the rolling elements. The core of the rolling block assembly 4 lies in the circulating raceway 6 and the cyclically rolling rollers 7 arranged inside it, which realizes the local cyclic movement of the rolling elements.
[0044] The base 5 is the main structure of the rolling block assembly 4, used to support and fix the circulating raceway 6.
[0045] The circulating raceway 6 refers to the track set on the base 5, in which the rollers 7 circulate. The rollers 7 complete their working stroke and return stroke within the circulating raceway 6, thereby achieving continuous rolling contact.
[0046] Roller 7 refers to the rolling element installed in the circulating raceway 6 and in rolling contact with the tangential surface 2 of the guide post 1. The roller 7 converts the sliding friction of the guide post 1 into rolling friction through its own rotation and cyclic movement within the circulating raceway 6.
[0047] Guide seat 8 refers to the component fixedly mounted on the end of guide sleeve 3. The main function of guide seat 8 is to cooperate with a specific structure on guide post 1 to precisely limit the axial movement stroke of guide post 1.
[0048] This application provides a guide structure with adjustable stroke, which is characterized by the following aspects:
[0049] The guide structure includes a guide post 1, whose outer wall has multiple axially extending facets 2. These facets 2 can be formed directly on the cylindrical outer surface of the guide post 1 by milling, grinding, or other machining methods, or by fixing multiple independent strip plates to the outer surface of the guide post 1. A guide sleeve 3 is fitted over the guide post 1. The guide sleeve 3 can be a cylindrical structure with an inner diameter slightly larger than the outer diameter of the guide post 1 to accommodate the guide post 1 and the rolling block assembly 4. The guide sleeve 3 can be made of high-strength steel or a composite material with good wear resistance. The length of the guide sleeve 3 can be designed according to actual application requirements, and its internal space is used for installing and fixing the rolling block assembly 4. The guide sleeve 3 can be installed by bolting, welding, or press-fitting to the punch press slide or die frame.
[0050] The rolling block assembly 4 is fixedly disposed inside the guide sleeve 3. The rolling block assembly 4 includes a base 5 and a circulating raceway 6 disposed on the base 5. Multiple cyclically rolling rollers 7 are installed within the circulating raceway 6, each roller 7 corresponding to and rolling in contact with a cross-section 2 of the guide post 1. Specifically, the base 5 can be an integral block structure, securely fixed to the inner wall of the guide sleeve 3 by screws, pins, or press fitting. The circulating raceway 6 can be directly formed on the base 5 through precision machining, for example, by milling an elliptical groove as the raceway. The rollers 7 can be short cylinders, which achieve rolling contact with the cross-section 2 of the guide post 1 through their own rotation and cyclic movement along the raceway within the circulating raceway 6. This design allows the rollers 7 to circulate only in a localized area when the guide post 1 moves, without requiring the entire rolling block assembly 4 or cage to move axially a long distance with the guide post 1, thus effectively avoiding the problem of limited stroke in traditional structures.
[0051] A guide seat 8 is fixedly mounted on the end of the guide sleeve 3 to limit the axial travel of the guide post 1. The guide seat 8 can be an annular or disc-shaped component with a central hole, installed at the lower or upper end of the guide sleeve 3 by bolts, welding, or threaded connections. The size of the central hole in the guide seat 8 matches the outer diameter of the guide post 1, allowing the guide post 1 to pass through and move axially. The guide seat 8 can set the maximum or minimum axial travel position of the guide post 1 through its internal structure or by engaging with specific structures on the guide post 1. For example, the inner wall of the guide seat 8 can be provided with an inner flange; when the guide post 1 moves downward, an outer flange or end face on the guide post 1 abuts against the inner flange, thereby limiting further movement of the guide post 1. By adjusting the installation position of the guide seat 8 or replacing it with a guide seat 8 of a different size, the axial travel of the guide post 1 can be flexibly adjusted.
[0052] The adjustable stroke guide structure of this application effectively solves the problem of the guide stroke being limited by the cage's movement range in existing punch press guide structures by fixing the rolling block assembly 4 inside the guide sleeve 3 and allowing the roller 7 to circulate within the circulating raceway 6. As a result, the axial movement stroke of the guide post 1 is no longer limited by the length of the guide sleeve 3 and can be flexibly adjusted according to actual stamping requirements, significantly improving the versatility of the guide structure and its adaptability to different stamping processes. This structure simplifies the stroke adjustment process, eliminating the need to replace major components such as the guide sleeve 3, thereby improving the efficiency and ease of operation of the punch press equipment.
[0053] In a specific implementation, the number of rolling block assemblies 4 is the same as the number of facets 2 on the guide post 1, and each rolling block assembly 4 corresponds to one facet 2. Specifically, the number of rolling block assemblies 4 is the same as the number of facets 2 on the guide post 1, meaning that each guide facet 2 on the guide post 1 is equipped with an independent rolling block assembly 4 for support and guidance. For example, if the guide post 1 has eight axially extending facets 2, the guide structure will be configured with eight rolling block assemblies 4, each of which will cooperate with one facet 2. This configuration ensures that each circumferential guide surface of the guide post 1 receives sufficient and balanced support throughout the guiding process, avoiding insufficient support or uneven force due to some facets 2 not being effectively utilized. Furthermore, the fact that each rolling block assembly 4 corresponds to one facet 2 further clarifies this one-to-one correspondence. This means that each rolling block assembly 4 is precisely positioned and installed so that its internal rollers 7 only make rolling contact with a specific facet 2 on the guide post 1. This specific correspondence optimizes the load transfer path, enabling the force acting on the guide post 1 to be efficiently and evenly transferred to the guide sleeve 3 through their respective rolling block assemblies 4, thereby minimizing guide clearance and improving guide rigidity.
[0054] like Figure 2 and 6 As shown, the base 5 of the rolling block assembly 4 is elongated, with at least one mounting groove 9. A circulating raceway 10 is disposed within the mounting groove 9, and a circulating raceway 6 is disposed inside the circulating raceway 10. Multiple rollers 7 are installed within the circulating raceway 6 and can circulate along the circulating raceway 6. Specifically, the base 5 of the rolling block assembly 4 is designed to be elongated. This elongated base 5 provides sufficient length and width to stably arrange and integrate multiple functional components, such as the mounting groove 9 and the circulating raceway 10, within it. Its shape typically matches the inner wall shape of the guide sleeve 3 and the cross-sectional shape 2 of the guide post 1 to ensure tight installation and operational stability.
[0055] At least one mounting groove 9 is provided on the elongated base 5. The mounting groove 9 is a precisely machined space reserved inside the base 5, its size and shape optimized to provide a stable and precise location for the circulating raceway 10. The mounting groove 9 allows the circulating raceway 10 to be assembled as an independent module, simplifying the overall manufacturing and assembly process. A circulating raceway 10 is housed within the mounting groove 9. The circulating raceway 10 is an independent, detachable component, with a precisely formed circulating raceway 6 inside. By manufacturing the circulating raceway 10 independently of the base 5, more specialized processing equipment and processes (such as precision grinding and heat treatment) can be used to ensure the high precision and high surface hardness of the circulating raceway 6, thereby improving the running smoothness and service life of the rollers 7. The circulating raceway 10 can be securely installed in the mounting groove 9 using press-fit, screw fixing, or bonding methods, ensuring that it does not shift during operation.
[0056] The circulating raceway body 10 contains a circulating raceway 6, and multiple rollers 7 are installed within the circulating raceway 6 and can circulate along it. The circulating raceway 6 typically consists of a load-bearing raceway and a return raceway, forming a closed circulation path, allowing the rollers 7 to move smoothly while bearing loads. As the rollers 7 roll within the circulating raceway 6, they form rolling contact with the tangential surface 2 of the guide post 1, thereby achieving low-friction linear guidance. The circulating rolling of the rollers 7 not only disperses wear and extends service life but also ensures uniform support force throughout the entire stroke range.
[0057] Through the above technical solution, the circulating raceway 10 is integrated as an independent module into the mounting slot 9 of the elongated base 5, realizing the modular design of the rolling block assembly 4. This design allows the key functional component, the circulating raceway 6, to be manufactured independently, enabling the use of more precise machining processes and more wear-resistant materials to ensure the accuracy and service life of the raceway. Furthermore, when the circulating raceway 6 or the rollers 7 need to be replaced due to wear, only the circulating raceway 10 needs to be replaced, without replacing the entire base 5, greatly simplifying the maintenance process and reducing maintenance costs and time. In addition, the elongated base 5 provides ample space and support for the stable integration of the mounting slot 9 and the circulating raceway 10, ensuring the smooth rolling of the rollers 7 within the circulating raceway 6 and stable contact with the cross-section 2 of the guide post 1, thereby improving the overall operating accuracy and reliability of the guiding structure.
[0058] In a further embodiment, each rolling block assembly 4 has multiple mounting slots 9 and corresponding circulating raceways 10 arranged axially at intervals on its base 5. This design aims to increase the contact points and support area between the rolling block assembly 4 and the cross-section 2 of the guide post 1. By arranging them axially at intervals, uniform and stable support can be ensured throughout the entire working stroke of the guide post 1. This arrangement can flexibly adjust the number and spacing of the mounting slots 9 according to the specific application requirements of the guide structure, such as stroke length, load size, and accuracy requirements. For example, for long-stroke guides, more mounting slots 9 can be provided to offer a longer effective support length; for high-precision requirements, the spacing can be optimized to reduce local deformation. Specifically, each circulating raceway 10 and its internal rollers 7 form a rolling support unit 11, which is the basic functional module for achieving rolling contact between the guide post 1 and the guide sleeve 3. Multiple rolling support units 11 are evenly or non-uniformly distributed along the axial direction of the guide post 1, working together on the corresponding cross-section 2 of the guide post 1.
[0059] Through the above technical solution, this application can significantly improve the load-bearing capacity and overall stiffness of the guide structure. This design allows the load acting on the guide post 1 to be evenly distributed by multiple rolling support units 11, effectively avoiding local stress concentration, thereby reducing wear and extending the service life of the guide structure. At the same time, the presence of multiple support points ensures that the guide post 1 can obtain stable and high-precision guidance throughout the entire axial movement process, which is especially suitable for applications requiring long strokes or bearing large axial loads, significantly improving the operational smoothness and reliability of the guide system.
[0060] In a specific implementation, the roller 7 is cylindrical, with its axis perpendicular to the axis of the guide post 1. The roller 7 rotates within the circulating raceway 6 while simultaneously circulating along the raceway 6. Specifically, the roller 7 is designed as a cylindrical rolling element with a circular cross-section and a certain length. Using cylindrical rollers 7 provides line contact or near-line contact, and compared to point contact (such as spherical balls), it can withstand greater radial loads and provides higher stiffness. The manufacturing process for this shape of roller 7 is relatively mature, easy to mass-produce, and helps control costs and ensure product quality.
[0061] Meanwhile, the axial direction of the cylindrical roller 7 is set perpendicular to the axial direction of the guide post 1. This perpendicular arrangement ensures stable rolling contact between the circumferential surface of the roller 7 and the tangential surface 2 of the guide post 1. When the guide post 1 moves axially, the roller 7 rolls purely on the tangential surface 2, effectively reducing sliding friction and lowering motion resistance. This precise axial alignment is crucial for maintaining the stability and accuracy of the guide structure, especially when subjected to lateral loads or high-speed motion.
[0062] Furthermore, the roller 7 rotates within the circulating raceway 6 while simultaneously circulating along it. The rotation of the roller 7 refers to its rolling about its axis, ensuring rolling contact with the guide post 1's tangential surface 2, thus achieving low-friction guidance. The circulatory movement of the roller 7 along the circulating raceway 6 means that after completing a certain stroke in the working area (i.e., the area in contact with the guide post 1's tangential surface 2), the roller 7 enters the non-working area and returns to its starting position in the working area via the circulating raceway 6, forming continuous rolling support. This circulatory movement mechanism ensures that the guiding structure can achieve unlimited stroke guidance, and by continuously changing the contact points, it helps to even out wear, extending the lifespan of the roller 7 and the circulating raceway 6.
[0063] Through the above technical solution, the roller 7 is designed as a cylinder, with its axis perpendicular to the axis of the guide post 1, ensuring a stable line contact or near-line contact between the roller 7 and the cross-section 2 of the guide post 1. This contact method effectively distributes the load, improves the load-bearing capacity and rigidity of the guide structure, and significantly reduces rolling friction resistance, making the guide post 1 move more smoothly and accurately in the axial direction. Furthermore, the roller 7 rotates within the circulating raceway 6 while circulating along it, ensuring not only the continuity of guidance and unlimited stroke capability, but also effectively avoiding localized wear through the continuous renewal of the contact surface of the roller 7, thereby extending the service life of the guide structure and maintaining long-term high-precision guiding performance.
[0064] In a further embodiment, the cut surface 2 is a plane, evenly or unevenly distributed along the circumference of the guide post 1. Specifically, defining the cut surface 2 of the guide post 1 as a plane ensures a stable and predictable contact interface between the roller 7 and the cut surface 2. As a basic geometric shape, the plane's manufacturing precision is easily controlled. It can be formed on the outer wall of the guide post 1 through high-precision machining processes such as precision milling, grinding, and wire cutting, thereby achieving high surface finish and dimensional accuracy. This ensures the roller 7 rolls smoothly on the cut surface 2, reducing friction and wear, and improving guiding accuracy and service life. Furthermore, the even or uneven distribution of the cut surfaces 2 along the circumference of the guide post 1 provides flexibility in the design of the guiding structure. When the cut surfaces 2 are evenly distributed, it means that each cut surface 2 is distributed at equal angular intervals along the circumference of the guide post 1. For example, if there are three cut surfaces 2, they can be spaced 120 degrees apart; if there are eight cut surfaces 2, they can be spaced 45 degrees apart. This arrangement helps to achieve a balanced load distribution in all directions of the guide structure, ensuring the symmetry and stability of the guide, and is suitable for applications requiring consistent stiffness in all directions. When the cut surfaces 2 are not uniformly arranged, it means that the cut surfaces 2 are distributed at unequal angular intervals along the circumference of the guide post 1. This arrangement allows designers to optimize the layout of the cut surfaces 2 according to the potential off-center loads or force requirements in specific directions in actual applications. For example, the density of the cut surfaces 2 can be increased or their positions adjusted in the main force direction to improve the load-bearing capacity and resistance to off-center loads in that direction, thereby meeting the performance requirements under specific working conditions.
[0065] like Figure 2 As shown, the guide post 1 has an upper section 12 with a larger diameter and a lower section 13 with a smaller diameter, forming a stepped surface 14 between the upper section 12 and the lower section 13; the cut surface 2 is provided on the outer peripheral wall of the lower section 13; the guide seat 8 is provided with a limiting structure 15, which cooperates with the stepped surface 14 to limit the maximum downward stroke of the guide post 1. Specifically, the guide post 1 is designed with two main parts with different diameters: an upper section 12 with a larger diameter and a lower section 13 with a smaller diameter. This stepped design creates a clear transition area, namely the stepped surface 14, in the axial direction of the guide post 1. As a key feature of the guide post 1, the position and size of the stepped surface 14 can be precisely designed according to actual application requirements, providing a basis for subsequent stroke limitation.
[0066] Meanwhile, multiple axially extending cross-sections 2 on the outer wall of the guide post 1 are specifically positioned on the outer peripheral wall of the lower section 13, which has a smaller diameter. This means that the rolling block assembly 4 inside the guide sleeve 3 will primarily roll in contact with the lower section 13 of the guide post 1 to achieve the guiding function. This design concentrates the guiding portion of the guide post 1 in the lower section, while the upper section 12 can be used for other functions or as part of a limiting fit. To precisely limit the maximum downward travel of the guide post 1, a limiting structure 15 is specially provided on the guide seat 8. This limiting structure 15 is designed to engage with the stepped surface 14 of the guide post 1. When the guide post 1 moves axially downward, its stepped surface 14 eventually makes physical contact with the limiting structure 15 on the guide seat 8, thereby preventing the guide post 1 from continuing to move downward. This mechanical engagement provides a robust and repeatable physical stop, ensuring that the maximum travel of the guide post 1 is accurately controlled. The limiting structure 15 can be an integrally formed protrusion of the guide seat 8, or it can be an independent component fixedly installed inside the guide seat 8, such as an annular baffle.
[0067] Through the above technical solution, the stepped design of the guide post 1 and the limiting structure 15 on the guide seat 8 form a reliable mechanical fit. When the guide post 1 moves downward, its stepped surface 14 precisely abuts against the limiting structure 15 on the guide seat 8, thus providing a clear and repeatable physical stop point. This effectively solves the problem of overtravel or inconsistent travel of the guide post 1, ensuring that the maximum travel of the guide post 1 when moving downward is precisely limited, greatly improving the positioning accuracy and operational stability of the guide structure. In addition, this segmented guide post 1 design also facilitates structural optimization and functional zoning. For example, the larger diameter upper section 12 can be used to install other components or provide additional support, while the smaller diameter lower section 13 focuses on the guiding function, making the entire structure more compact and efficient.
[0068] Furthermore, the guide seat 8 has an inner cavity 16 for accommodating the upper section 12 of the guide post 1 and allowing the guide post 1 to move axially up and down within the inner cavity 16. Specifically, the inner cavity 16 provided inside the guide seat 8 can be cylindrical, polygonal, or a custom-shaped cavity tailored to the specific shape of the upper section 12 of the guide post 1. The dimensions of the inner cavity 16 should be designed to ensure an appropriate clearance between it and the upper section 12 of the guide post 1, allowing the guide post 1 to move freely and with low friction axially within the inner cavity 16. The inner cavity 16 can be formed by integral casting of the guide seat 8, precision machining (such as boring, broaching), or by assembling multiple components together. The main function of the inner cavity 16 is to provide a protected and precise movement space for the upper section 12 of the guide post 1. The upper section 12 of the guide post 1 is designed to slide smoothly into and out of the inner cavity 16, thereby achieving the desired axial travel under the constraint of the guide seat 8. This containment relationship ensures that the guide post 1 remains on the correct trajectory during movement, avoiding radial swaying or deviation. By allowing the guide post 1 to move axially up and down within the inner cavity 16, this application ensures that the guide post 1 is effectively supported and guided by the guide seat 8 throughout its entire working stroke. This movement method is the core of realizing the function of the adjustable stroke guide structure, allowing the guide post 1 to be precisely positioned and its stroke adjusted according to actual needs. To further optimize the smoothness of movement, the inner surface of the inner cavity 16 and the outer surface of the upper section of the guide post 12 can be finely machined, such as by grinding, polishing, or coating with anti-friction materials to reduce the coefficient of friction and improve wear resistance.
[0069] By providing an inner cavity 16 within the guide seat 8 specifically to accommodate the upper section 12 of the guide post 1, this application effectively provides a clear and unobstructed path for the axial movement of the guide post 1. This design ensures that the guide post 1 can move smoothly up and down within the guide seat 8, avoiding jamming or wear problems caused by insufficient space or structural interference. Simultaneously, the presence of the inner cavity 16 helps maintain good guiding accuracy of the guide post 1, thereby improving the operational stability, reliability, and service life of the entire adjustable stroke guide structure.
[0070] In a specific implementation, the limiting structure 15 is an annular baffle, which is fixedly installed on the inner wall of the annular opening at the lower end of the guide seat 8, and abuts against the stepped surface 14 to limit the axial displacement of the guide post 1. The annular baffle is a ring-shaped mechanical component whose main function is as an axial positioning or limiting component. This annular baffle is typically made of high-strength materials, such as spring steel, to ensure that it maintains structural integrity and positioning accuracy under impact loads. The design of the annular baffle can be varied; for example, it can be an open elastic retaining ring that is installed into a pre-set groove through elastic deformation; it can also be an integral annular component, fixed by threads or interference fit; or it can be part of the lower opening of the inner cavity 16 of the guide seat 8, i.e., an integrated setting; its selection should comprehensively consider installation convenience, load-bearing capacity, and disassembly and maintenance needs. Here, the annular baffle, as the limiting structure 15, provides a clear and reliable physical boundary for the axial movement of the guide post 1.
[0071] As the guide post 1 moves axially downward within the guide sleeve 3, the stepped surface 14 formed between its upper section 12 and lower section 13 gradually approaches and eventually contacts the annular baffle fixedly installed within the guide seat 8. The annular baffle, acting as a robust physical barrier, effectively prevents the stepped surface 14 from continuing to move downward, thus limiting the axial displacement of the guide post 1 to a predetermined maximum stroke range. This contact-limiting method provides a clear and reliable stroke endpoint, ensuring that the guide structure does not exceed the preset movement range during operation, thereby protecting other components of the equipment and guaranteeing working accuracy.
[0072] Through the above technical solution, the limiting structure 15 is specifically designed as an annular baffle and fixedly installed on the inner wall of the annular opening at the lower end of the guide seat 8, so that the stepped surface 14 of the guide post 1 can accurately abut against the annular baffle when moving downwards. This design effectively solves the problems of inaccurate positioning or easy loosening that may exist in traditional limiting structures. The annular baffle structure is simple and easy to manufacture, and through a reliable fixing method, it can withstand the impact force generated by the repeated abutment of the stepped surface 14 of the guide post 1, ensuring the long-term stability and reliability of the limiting function 15. This not only ensures the precise limitation of the axial movement stroke of the guide post 1, improving the operating accuracy and stability of the guide structure, but also simplifies the installation and maintenance of the limiting structure 15, thereby improving the service life and working efficiency of the entire adjustable stroke guide structure.
[0073] Example 2:
[0074] This embodiment proposes a punch press slide guide structure. This punch press slide guide structure refers to applying the aforementioned adjustable stroke guide structure to the slide portion of a punch press as its core guide mechanism. Specifically, this guide structure is integrated between the punch press slide and the frame to precisely guide the slide in high-frequency reciprocating linear motion. During implementation, the guide post 1 can be fixed to the punch press frame or lower die base, while the guide sleeve 3, rolling block assembly 4, and guide seat 8 are fixed to the punch press slide, or vice versa. To withstand the enormous impact forces and vibrations generated during punch press operation, the guide structure is typically made of high-strength, high-wear-resistant alloy steel, and undergoes precision machining and heat treatment to ensure its structural integrity and guiding accuracy under long-term high-load operation. Furthermore, the connection interface between the guide structure and the punch press slide and frame employs a high-rigidity connection method, such as bolt fastening or pin positioning, to prevent loosening or deformation under impact loads, thereby ensuring the stability and accuracy of the entire stamping process.
[0075] By applying the adjustable stroke guide structure to the punch press slide using the above technical solution, the overall performance of the punch press equipment can be significantly improved. Due to the rolling contact between the rolling block assembly 4 and the guide post 1's cross-section 2, the frictional resistance is greatly reduced compared to traditional sliding guides, resulting in smoother and faster movement of the punch press slide, while also reducing energy loss and heat generation, and extending the equipment's service life. Multiple rolling support units 11 are distributed axially at intervals, collectively rolling into contact with their corresponding cross-sections 2, providing high rigidity and excellent load-bearing capacity, effectively resisting the enormous lateral forces and impact loads generated during the stamping process, ensuring that the slide maintains extremely high positioning accuracy and repeatability even under high dynamic loads. Furthermore, the stepped surface 14 of the guide post 1 cooperates with the limiting structure 15 of the guide seat 8 to achieve precise adjustment and reliable limitation of the punch press slide stroke. This is crucial for depth control in different stamping processes, not only improving machining accuracy but also effectively protecting the mold and equipment. Therefore, this punch press slide guide structure provides a high-precision, high-rigidity, low-friction, and adjustable stroke solution, greatly improving the stamping quality and production efficiency of the punch press equipment.
[0076] The following example will provide a more detailed explanation of the above technical solution:
[0077] In a punch press, a guide structure is needed to ensure that the slide can achieve precise and adjustable axial movement under different stamping processes. This solution provides an adjustable stroke guide structure, the working principle of which is as follows:
[0078] The guide structure includes a guide post 1, whose outer wall has multiple axially extending cross-sections 2. For example, the guide post 1 may have four evenly distributed planar cross-sections 2, which are evenly arranged along the circumference of the guide post 1. A guide sleeve 3 is fitted over the guide post 1. Inside the guide sleeve 3, multiple rolling block assemblies 4 are fixedly arranged. Specifically, the number of rolling block assemblies 4 is the same as the number of cross-sections 2 of the guide post 1, and each rolling block assembly 4 corresponds to one cross-section 2 of the guide post 1.
[0079] Each rolling block assembly 4 has a long, narrow base 5 with multiple mounting slots 9 spaced axially on it. Each mounting slot 9 contains a circulating raceway body 10, and the circulating raceway body 10 contains a circulating raceway 6. Multiple cylindrical rollers 7 are mounted within the circulating raceway 6 and can circulate within it. The axial direction of these rollers 7 is perpendicular to the axial direction of the guide post 1. Each circulating raceway body 10 and the rollers 7 within it form a rolling support unit 11. Multiple rolling support units 11 are spaced axially and collectively roll in contact with the corresponding tangential surface 2 of the guide post 1. When the guide post 1 moves axially, the rollers 7 rotate within the circulating raceway 6 while simultaneously circulating along it, thereby achieving low-friction rolling guidance of the guide post 1.
[0080] Unlike existing technologies where the cage of the rolling element needs to slide up and down with the movement of the guide post 1, in this design, the rolling block assembly 4 that carries the roller 7 is fixedly installed inside the guide sleeve 3. This means that when the guide post 1 moves axially, the rolling block assembly 4 itself does not need to move; guidance is achieved solely by the cyclic rolling of the roller 7 within the circulating raceway 6. This design eliminates the limitation of the cage's movement range on the guiding stroke in traditional structures, making the effective stroke of the guiding structure no longer limited by the length of the guide sleeve 3. This significantly improves its versatility and adaptability, allowing it to adapt to various stamping stroke requirements without needing to replace guide sleeves 3 of different lengths.
[0081] To achieve precise adjustment and limitation of the stroke, a guide seat 8 is fixedly provided at the end of the guide sleeve 3. The guide seat 8 has an inner cavity 16 for accommodating the upper section 12 of the guide post 1 and allowing the guide post 1 to move axially up and down within the inner cavity 16. The guide post 1 has an upper section 12 with a larger diameter and a lower section 13 with a smaller diameter, forming a stepped surface 14 between the upper section 12 and the lower section 13. The tangential surface 2 of the guide post 1 is provided on the outer peripheral wall of the lower section 13. A limiting structure 15 is provided on the guide seat 8, which cooperates with the stepped surface 14 of the guide post 1 to limit the maximum downward stroke of the guide post 1. Specifically, the limiting structure 15 can be an annular baffle, which is fixedly installed on the inner wall of the annular opening at the lower end of the guide seat 8. When the guide post 1 moves downward to the preset position, the stepped surface 14 of the guide post 1 abuts against the annular baffle, thereby limiting the axial displacement of the guide post 1 and ensuring the accuracy of the stamping stroke. By adjusting the position of the guide seat 8 or the annular baffle, the lower limit position of the guide post 1 can be easily changed, thereby realizing the rapid adjustment of the guide structure stroke and meeting the switching requirements of different stamping processes.
[0082] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A guide structure with adjustable stroke, characterized in that, include: - Guide post (1), with multiple axially extending cross-sections (2) on its outer wall; - Guide sleeve (3), fitted onto the outside of the guide post (1); - A rolling block assembly (4) is fixedly disposed inside the guide sleeve (3). The rolling block assembly (4) includes a base (5) and a circulating raceway (6) disposed on the base (5). A recirculating roller (7) is installed in the circulating raceway (6). Each roller (7) corresponds to a cross section (2) of the guide post (1) and rolls in contact with it. - Guide seat (8), fixedly disposed at the end of the guide sleeve (3), for limiting the axial movement stroke of the guide post (1).
2. The adjustable stroke guide structure according to claim 1, characterized in that: The number of the rolling block assemblies (4) is the same as the number of the cross-sections (2) of the guide post (1), with each rolling block assembly (4) corresponding to one cross-section (2).
3. The adjustable stroke guide structure according to claim 1, characterized in that: The base (5) of the rolling block assembly (4) is elongated and has at least one mounting groove (9) on it. A circulating raceway body (10) is provided in the mounting groove (9). The circulating raceway body (10) has a circulating raceway (6) inside it. Multiple rollers (7) are installed in the circulating raceway (6) and can circulate along the circulating raceway (6).
4. The adjustable stroke guide structure according to claim 3, characterized in that: On the base (5) of each of the rolling block assemblies (4), a plurality of mounting grooves (9) and corresponding circulating raceways (10) are arranged at intervals along the axial direction. Each circulating raceway (10) and the rollers (7) therein form a rolling support unit (11). The plurality of rolling support units (11) are distributed at intervals along the axial direction and make rolling contact with the corresponding tangent (2).
5. The adjustable stroke guide structure according to claim 1, characterized in that: The roller (7) is cylindrical, and its axis is perpendicular to the axis of the guide post (1). The roller (7) rotates in the circulating raceway (6) while circulating along the circulating raceway (6).
6. The adjustable stroke guide structure according to claim 1, characterized in that: The cut surface (2) is a plane and is arranged uniformly or unevenly along the circumference of the guide post (1).
7. The adjustable stroke guide structure according to claim 1, characterized in that: The guide post (1) has an upper column (12) with a larger diameter and a lower column (13) with a smaller diameter, and a stepped surface (14) is formed between the upper column (12) and the lower column (13); the cut surface (2) is provided on the outer peripheral wall of the lower column (13); the guide seat (8) is provided with a limiting structure (15), and the limiting structure (15) cooperates with the stepped surface (14) to limit the maximum downward stroke of the guide post (1).
8. The adjustable stroke guide structure according to claim 7, characterized in that: The limiting structure (15) is an annular baffle wall, which is fixedly installed on the inner wall of the annular opening at the lower end of the guide seat (8) to abut against the stepped surface (14) to limit the axial displacement of the guide post (1).
9. The adjustable stroke guide structure according to claim 1, characterized in that: The guide seat (8) has an inner cavity (16) for accommodating the upper section (12) of the guide post (1) and allowing the guide post (1) to move axially up and down in the inner cavity (16).
10. A punch press slide guide structure, characterized in that: The guide structure includes any one of claims 1 to 9 with adjustable stroke.