Linear guide rail machining tooling

Abstract

The utility model relates to a linear guide rail processing frock. Including installation base, on its upper solid joint has a plurality of manual clamping device and a plurality of pneumatic clamp assembly, manual clamping device includes clamping seat, installs movable clamping assembly and fixed clamping assembly on the clamping seat, the spacing between two clamping assemblies is adjustable, still includes adjusting assembly, the structure of two clamping assemblies is identical, fixed clamping assembly includes the clamping slider and slider positioning block that are set up and present right angle trapezoidal structure oppositely, the inclined plane of two is opposite and slides and cooperates, is provided with the sliding groove and slider of sliding cooperation on the butt joint inclined plane of clamping slider and slider positioning block, makes the clamping slider move inwards when moving down, is provided with locking mechanism between clamping slider and slider positioning block. The utility model combines adjustable clamping spacing's manual clamping device and stable pressing's pneumatic clamping assembly, effectively solved the technical problem that traditional frock poor adaptability and clamping stability are insufficient.

Description

Technical Field

[0001] This utility model belongs to the field of welding tooling technology, and in particular relates to a linear guide rail processing tooling. Background Technology

[0002] Linear guides, as core components in mechanical devices and transmission systems, are widely used in industrial scenarios requiring precise linear movement. Their function is to provide stable and reliable guiding support for moving parts.

[0003] In the manufacturing process, the machining quality of linear guides directly affects the operating accuracy and service life of the entire machine. This is especially true during welding and positioning, where the adaptability and stability of the tooling are extremely critical. However, the welding and positioning tooling commonly used in the industry for linear guides has significant drawbacks: First, traditional tooling relies heavily on fixed-spacing positioning groove structures. This rigid design cannot be dynamically adjusted according to changes in guide rail specifications. When faced with production tasks involving guide rails of different sizes or models, operators must repeatedly disassemble and replace specialized tooling, leading to frequent production interruptions, extended equipment changeover times, and consequently, a significant decrease in overall production efficiency and a continuous increase in manufacturing costs. Second, the clamping mechanism of existing tooling is overly rudimentary, typically employing only a single fixing method and lacking effective fine-tuning and locking mechanisms. Under the influence of welding thermal stress, the guide rail is prone to slight displacement or vibration, resulting in quality problems such as weld misalignment and insufficient bonding strength, and in severe cases, even product failure. Finally, the tooling lacks versatility and cannot accommodate diverse guide rail types, making it difficult for production lines to achieve flexible production and further restricting the company's technological upgrades and market responsiveness. Therefore, there is an urgent need to design a linear guide machining fixture to solve the above problems. Utility Model Content

[0004] This invention provides a linear guide machining fixture with a reasonable structural design to solve the technical problems existing in the prior art. This invention effectively solves the technical problems of poor adaptability and insufficient clamping stability of traditional fixtures by combining an adjustable clamping distance manual clamping device with a stable pressing pneumatic clamping assembly.

[0005] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A linear guide rail processing fixture includes a mounting base, on which a plurality of manual clamping devices distributed along its length are fixedly connected; it also includes a plurality of pneumatic clamping assemblies distributed along its length and mounted on the mounting base for pressing down and fixing the linear guide rail; the manual clamping device includes a clamping seat mounted on the mounting base, on which a movable clamping assembly and a fixed clamping assembly are mounted opposite each other, the distance between the movable clamping assembly and the fixed clamping assembly is adjustable, and the movable clamping assembly and the fixed clamping assembly are... The holder is slidably connected; it also includes an adjustment component installed on the holder for adjusting the distance between the movable clamping component and the fixed clamping component; the movable clamping component and the fixed clamping component have the same structure, the fixed clamping component includes a clamping slider and a slider positioning block arranged in opposite directions and having a right-angled trapezoidal structure, the inclined surfaces of the clamping slider and the slider positioning block are in contact with each other and slide in fit; a sliding groove and a slider are provided on the mating inclined surfaces of the clamping slider and the slider positioning block, so that the clamping slider moves inward when it moves downward; a locking mechanism is provided between the clamping slider and the slider positioning block to lock the two together.

[0006] The advantages and positive effects of this utility model are as follows: This utility model provides a linear guide rail machining fixture. By integrating a manual clamping device and a pneumatic clamping assembly, combined with an adjustable spacing design and a right-angled trapezoidal structure clamping assembly, it solves the problems of insufficient positioning accuracy, difficulty in adapting to different specifications of guide rails, and poor versatility in the prior art. Specifically, the manual clamping device achieves flexible spacing adjustment through the adjustment assembly, avoiding the need for frequent tooling changes; the pneumatic clamping assembly provides stable vertical clamping force, preventing minor displacement of the guide rail during machining; and the right-angled trapezoidal structure of the clamping assembly and the locking mechanism work together to ensure the reliability and stability of the clamping process. Therefore, this utility model achieves highly adaptable clamping of guide rails of different specifications, while improving positioning accuracy and machining efficiency.

[0007] Preferably, the locking mechanism includes a guide strip hole that connects the top surface and the inclined surface of the clamping slider, a locking bolt that passes through the guide strip hole, and the locking bolt passes through a slot on the inclined surface of the slider positioning block and is screwed into the slider positioning block.

[0008] Preferably, the adjusting assembly includes a mounting guide sleeve connected to the clamping seat, a guide sleeve end cap detachably connected to the outer opening of the mounting guide sleeve, an adjusting screw rotatably connected to the center of the guide sleeve end cap, and an adjusting handwheel installed at the outer end of the adjusting screw; it also includes a telescopic sleeve slidably connected to the mounting guide sleeve, the telescopic sleeve being threadedly connected to the adjusting screw, and the inner end of the telescopic sleeve being connected to the corresponding movable clamping assembly.

[0009] Preferably, the adjusting assembly further includes a telescopic guide bar detachably connected to the top of the inner cavity of the mounting guide sleeve. The length direction of the telescopic guide bar is consistent with the axial direction of the adjusting screw. A guide groove extending along its axial direction is provided on the outer peripheral wall of the telescopic sleeve, and the telescopic guide bar slides through the guide groove.

[0010] Preferably, the pneumatic clamp assembly includes a clamp seat mounted on a mounting base, a cylinder hinge fixed to the clamp seat, and a clamp cylinder pivotally connected to the cylinder hinge; it also includes a vertical clamping mechanism mounted on the clamp seat, the drive end of the vertical clamping mechanism being pivotally connected to the extension end of the clamp cylinder.

[0011] Preferably, the system further includes a plurality of pneumatic clamping assemblies mounted on the mounting base, distributed along its length and located on the same side as the plurality of movable clamping assemblies, for automatically positioning the linear guide rail; the pneumatic clamping assembly includes a mounting pad mounted on the mounting base, a guide groove block fixedly connected to the mounting pad, a sliding groove opened on the top of the guide groove block and a clamping top block slidingly passing through the sliding groove, and a limit cover mounted on the top of the guide groove block; it also includes a clamping cylinder seat mounted on the mounting pad, a horizontally arranged clamping cylinder mounted on the clamping cylinder seat, and the clamping top block connected to the extended end of the clamping cylinder.

[0012] Preferably, it further includes a plurality of limiting blocks I installed on the clamping seat at one end and a limiting block II installed on the clamping seat at the other end, for clamping and limiting the end of the linear guide rail.

[0013] Preferably, the vertical clamping mechanism includes a swing arm mounting base mounted on a clamping seat. A lower pressing mounting arm is pivotally connected to the upper part of the swing arm mounting base, and an outer drive swing arm is pivotally connected to the lower part. An inner connecting arm is pivotally connected between the end of the outer drive swing arm and the middle of the lower pressing mounting arm. The outer ends of the outer drive swing arm and the inner connecting arm are pivotally connected to the extension end of the clamping cylinder via pins. A mounting groove is provided at the outer end of the lower pressing mounting arm, and screw slides are provided above and below the mounting groove. The mechanism also includes a pressure block screw rod that passes through the mounting groove and through the two screw slides. A rubber pressing block is installed at the lower end of the pressure block screw rod. A locking nut is screwed onto the upper part of the pressure block screw rod to lock the pressure block screw rod, screw slides, and lower pressing mounting arm. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the manual clamping device in this utility model;

[0016] Figure 3 This is a cross-sectional view of the adjustment component in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the pneumatic clamp assembly in this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the pneumatic clamping assembly in this utility model;

[0019] Figure 6 This is a top view of the structure of this utility model.

[0020] In the diagram: 1. Mounting base; 2. Clamping seat; 2-1. Clamping seat body; 2-2. T-shaped slide groove; 3. Adjustment assembly; 3-1. Mounting guide sleeve; 3-2. Guide sleeve end cap; 3-3. Adjusting handwheel; 3-4. Adjusting screw; 3-5. Telescopic sleeve; 3-6. Telescopic guide bar; 4. Pneumatic clamping assembly; 4-1. Mounting pad; 4-2. Clamping top block; 4-3. Guide groove block; 4-4. Limiting top cover; 4-5. Clamping cylinder seat; 4-6. Clamping cylinder; 5. Pneumatic clamping assembly; 5-1 5-1. Clamping cylinder; 5-2. Swing arm mounting base; 5-3. Inner connecting arm; 5-4. Pressing mounting arm; 5-5. Pressure block screw; 5-6. Screw slide; 5-7. Pressing block; 5-8. External drive swing arm; 5-9. Cylinder hinge; 5-10. Clamping seat; 6. Movable clamping assembly; 7. Fixed clamping assembly; 7-1. Locking bolt; 7-2. Clamping slider; 7-3. Guide strip hole; 7-4. Slider positioning block; 8. Linear guide rail; 9. Limit stop one; 10. Limit stop two. Detailed Implementation

[0021] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0022] Please see Figure 1 The linear guide rail processing fixture of this utility model includes a mounting base 1, on which a plurality of manual clamping devices distributed along its length are fixedly connected; it also includes a plurality of pneumatic clamping assemblies 5 distributed along its length and mounted on the mounting base 1, for pressing down and fixing the linear guide rail 8; see further details. Figure 2The aforementioned manual clamping device includes a clamping base 2 mounted on a mounting base 1. A movable clamping component 6 and a fixed clamping component 7 are mounted on the clamping base 2 and are arranged opposite to each other. The distance between the movable clamping component 6 and the fixed clamping component 7 is adjustable, and the movable clamping component 6 is slidably connected to the clamping base 2. It also includes an adjusting component 3 mounted on the clamping base 2 for adjusting the distance between the movable clamping component 6 and the fixed clamping component 7. The movable clamping component 6 and the fixed clamping component 7 have identical structures. The fixed clamping component 7 includes clamping sliders arranged in opposite directions and forming a right-angled trapezoidal structure. The clamping slider 7-2 and the slider positioning block 7-4 are connected and slidably engaged on their inclined surfaces. Sliding grooves and sliders are provided on the mating inclined surfaces of the clamping slider 7-2 and the slider positioning block 7-4, causing the clamping slider 7-2 to move inwards as it moves downwards. The right-angled trapezoidal structure design of the clamping slider 7-2 and the slider positioning block 7-4 in the fixed clamping assembly 7 allows for adaptation to different clamping force requirements by varying the angle of the inclined surfaces, such as using 30°, 45°, or 60°, to meet the clamping requirements of different guide rail specifications. A locking mechanism is provided between the clamping slider 7-2 and the slider positioning block 7-4 to lock them together.

[0023] In practical applications, the mounting base 1 can be understood as the basic platform that supports the entire tooling. It can be formed by casting or welding, and its corrosion resistance can be improved through surface treatment.

[0024] like Figure 2 As shown, the locking mechanism includes a guide strip hole 7-3 opened on the top of the clamping slider 7-2, which connects its top surface and the inclined surface. A locking bolt 7-1 is inserted into the guide strip hole 7-3. The locking bolt 7-1 is inserted into a slot opened on the inclined surface of the slider positioning block 7-4 and is screwed into the slider positioning block 7-4.

[0025] Specifically, the guide slot 7-3 refers to an elongated through-hole with a specific layout. It can be a straight or curved slot penetrating the top and inclined surfaces of the clamping slider 7-2, its purpose being to provide the locking bolt 7-1 with adjustable capability. In practical applications, the guide slot 7-3 can be formed through machining methods such as milling or wire cutting to ensure dimensional accuracy and surface finish. The locking bolt 7-1 is a fastener with external threads, its function being to achieve a rigid connection between the clamping slider 7-2 and the slider positioning block 7-4, while allowing dynamic adjustment between the two.

[0026] In detail, this locking mechanism effectively solves the reliability problem of the clamping assembly during dynamic adjustment through the cooperation design of the guide slot 7-3 and the locking bolt 7-1. The unique layout of the guide slot 7-3 allows the locking bolt 7-1 to move freely within it, adapting to the movement trajectory of the clamping slider 7-2 along the inclined plane, avoiding the jamming phenomenon caused by traditional fixed hole positions. At the same time, the threaded engagement between the locking bolt 7-1 and the slot hole on the inclined plane of the slider positioning block 7-4 provides precise preload control, preventing loosening caused by machining vibration. This design is particularly suitable for the inward movement characteristics of the clamping slider 7-2 when it moves downward, ensuring both the smoothness of the adjustment process and the stability of the locked state.

[0027] like Figure 2 and Figure 3 As shown, the adjustment assembly 3 includes a mounting guide sleeve 3-1 connected to the clamping seat 2, a guide sleeve end cap 3-2 detachably connected to the outer opening of the mounting guide sleeve 3-1, an adjustment screw 3-4 rotatably connected to the guide sleeve end cap 3-2 passing through the center of the guide sleeve end cap 3-2, and an adjustment handwheel 3-3 installed at the outer end of the adjustment screw 3-4; it also includes a telescopic sleeve 3-5 slidably connected to the mounting guide sleeve 3-1, the telescopic sleeve 3-5 being threadedly connected to the adjustment screw 3-4, and the inner end of the telescopic sleeve 3-5 being connected to the corresponding movable clamping assembly 6.

[0028] Specifically, the guide sleeve 3-1 is a cylindrical structure with guiding and supporting functions. It can be made of metal, such as steel or aluminum alloy, and is connected to the clamping seat 2 by bolts or welding. Its purpose is to provide a stable supporting foundation for the entire adjustment assembly. The guide sleeve end cap 3-2 can be understood as a sealing structure. It can be detachably connected by means of threaded connection, snap connection, or flange connection, which facilitates maintenance and replacement of internal components. The adjusting screw 3-4 is a key component that converts rotary motion into linear motion. Its surface is machined with precision threads, and it can be rotatably connected to the guide sleeve end cap 3-2 through bearings or bushings to ensure smooth motion transmission. The telescopic sleeve 3-5 is a tubular structure that can move axially. Its inner wall is machined with threads that match those of the adjusting screw 3-4. The linear motion conversion is achieved through the threaded engagement, and it also has a self-locking function to ensure positional stability.

[0029] Specifically, the aforementioned adjustment assembly achieves precise spacing adjustment through the organic cooperation between its components, effectively solving the positioning deviation problem that easily occurs during manual adjustment. When used in conjunction with the clamping base 2, it not only enables precise adjustment of guide rails of different specifications but also ensures the stability and reliability of the adjustment process, greatly improving welding quality and production efficiency.

[0030] like Figure 2 and Figure 3 As shown, the adjustment assembly 3 also includes a telescopic guide bar 3-6 that is detachably connected to the top of the inner cavity of the mounting guide sleeve 3-1. The length direction of the telescopic guide bar 3-6 is consistent with the axial direction of the adjustment screw 3-4. A guide groove extending along its axial direction is provided on the outer peripheral wall of the telescopic sleeve 3-5, and the telescopic guide bar 3-6 slides through the guide groove.

[0031] The telescopic guide bar 3-6 is a slender structural component used to guide the telescopic sleeve 3-5. It can be made of metal, such as a rectangular bar, a cylindrical guide rod, or a guide rail with a specific cross-sectional shape. Its purpose is to provide precise movement path constraints for the telescopic sleeve 3-5, ensuring that it can only move axially. The guide groove is a groove structure formed on the outer peripheral wall of the telescopic sleeve 3-5. It can be a straight groove, a dovetail groove, or a T-groove, etc. Its purpose is to accommodate the telescopic guide bar 3-6 and form a sliding fit with it, thereby restricting the radial and rotational degrees of freedom of the telescopic sleeve 3-5. When the adjusting screw 3-4 rotates, the telescopic sleeve 3-5 is constrained by the guide groove and the telescopic guide bar 3-6, eliminating rotational tendencies and the possibility of radial offset, achieving smooth, purely axial movement. Furthermore, since the telescopic guide bar 3-6 is detachably connected, it facilitates later maintenance and replacement, improving the service life and reliability of the device. Furthermore, this guiding mechanism works in conjunction with the threaded drive of the adjusting screw 3-4 to ensure the accuracy and repeatability of the adjustment process, thereby effectively solving the problem of motion instability that may occur in the telescopic sleeve 3-5 during the adjustment process, and improving the reliability and processing quality of the linear guide clamp.

[0032] like Figure 4 As shown, the pneumatic clamp assembly 5 includes a clamp seat 5-10 mounted on a mounting base 1, a cylinder hinge seat 5-9 fixedly connected to the clamp seat 5-10, and a clamp cylinder 5-1 pivotally connected to the cylinder hinge seat 5-9; it also includes a vertical clamping mechanism mounted on the clamp seat 5-10, with the drive end of the vertical clamping mechanism pivotally connected to the extension end of the clamp cylinder 5-1. The clamp cylinder 5-1 is a power element that performs linear motion, which can be implemented using a standard cylinder or a custom cylinder, with the aim of providing stable clamping force. The vertical clamping mechanism is an actuator that realizes vertical clamping action, which can be implemented through lever transmission or a linkage mechanism, with the aim of ensuring the directionality of the clamping force. Specifically, this technical solution achieves effective fixation of the linear guide rail through the organic cooperation of various components. The clamp seat 5-10, as a basic support component, has a rigid design that ensures the stability of the entire pneumatic clamp assembly. The above technical solution effectively solves the problem of guide rail displacement caused by the simple design of the clamping mechanism, and significantly improves the positioning accuracy and stability of the linear guide rail during the welding process.

[0033] like Figure 1As shown, it also includes several pneumatic clamping assemblies 4 mounted on the mounting base 1, distributed along its length and located on the same side as several movable clamping assemblies 6, for automatically positioning the linear guide rail 8; see further details. Figure 5 The pneumatic clamping assembly 4 includes a mounting pad 4-1 mounted on the mounting base 1, a guide groove block 4-3 fixedly connected to the mounting pad 4-1, a sliding groove on the top of the guide groove block 4-3, and a clamping top block 4-2 slidingly passing through the sliding groove. A limit cover 4-4 is installed on the top of the guide groove block 4-3. The sliding groove is a guide path opened on the top of the guide groove block 4-3 to accommodate the sliding passage of the clamping top block 4-2. It can be generated by machining to constrain the movement trajectory of the clamping top block 4-2. The mounting pad 4-1 can be understood as a component that provides a stable mounting base. It can be fixed to the mounting base 1 by bolt connection or welding to absorb vibration and ensure the stability of the assembly. The guide groove block 4-3 is a component that forms a high-precision sliding track. It can be achieved by integral molding or assembly to ensure the straightness of the movement direction.

[0034] The pneumatic clamping assembly 4 also includes a clamping cylinder seat 4-5 mounted on the mounting pad 4-1, a horizontally arranged clamping cylinder 4-6 mounted on the clamping cylinder seat 4-5, and a clamping top block 4-2 connected to the extended end of the clamping cylinder 4-6.

[0035] Specifically, the above setup achieves automatic positioning of the linear guide rail 8 by introducing a dedicated pneumatic clamping component 4, effectively solving the problems of insufficient accuracy and low efficiency caused by manual adjustment. The pneumatic clamping component 4 is located on the same side as the movable clamping component 6. This layout ensures seamless connection between the positioning action and the manual adjustment process, avoiding mutual interference, while allowing for rapid automatic precise positioning after manual coarse adjustment, significantly improving overall operational smoothness. The laterally positioned clamping cylinders 4-6 generate horizontal thrust based on their perpendicular layout to the length direction of the guide rail. Notably, this lateral force acts directly on the lateral position of the guide rail. Combined with several fixed clamping components 7, this enables automatic positioning of the linear guide rail 8.

[0036] like Figure 6 As shown, it also includes several limiting blocks 9 installed on the clamping seat 2 at one end and a limiting block 10 installed on the clamping seat 2 at the other end, for clamping and limiting the end of the linear guide rail 8.

[0037] Specifically, limit stop 9 refers to a positioning component installed on the clamping seat at one end of the tooling. It can be a rigid block structure fixed to the end of the clamping seat by bolts, clips, or other detachable connections, aiming to provide precise axial constraint for one end of the linear guide rail 8. Limit stop 10 refers to a positioning component installed on the clamping seat at the other end of the tooling. It forms a symmetrical distribution with limit stop 9, enabling bidirectional limiting and preventing axial slippage of the guide rail during processing. Both are made of rigid materials to ensure resistance to external forces and maintain a stable constraint effect during processing. Through the above settings, not only is the axial displacement problem caused by the lack of constraint at the end of the guide rail solved, but the overall positioning accuracy and processing stability of the tooling are also significantly improved, making it particularly suitable for processing various specifications of guide rails.

[0038] like Figure 4 As shown, the vertical clamping mechanism includes a swing arm mounting base 5-2 mounted on a clamping seat 5-10. A lowering mounting arm 5-4 is pivotally connected to the upper part of the swing arm mounting base 5-2, and an outer drive swing arm 5-8 is pivotally connected to the lower part. An inner connecting arm 5-3 is pivotally connected between the end of the outer drive swing arm 5-8 and the middle of the lowering mounting arm 5-4. The outer ends of the outer drive swing arm 5-8 and the inner connecting arm 5-3 are pivotally connected to the extended end of the clamping cylinder 5-1 via pins. A mounting groove is provided at the outer end of the pressing mounting arm 5-4, and screw slides 5-6 are provided above and below the mounting groove. It also includes a pressure block screw 5-5 that passes through the mounting groove and through the two screw slides 5-6. A rubber pressing block 5-7 is installed at the lower end of the pressure block screw 5-5. A locking nut is screwed on the upper part of the pressure block screw 5-5 to lock the pressure block screw 5-5, screw slides 5-6 and pressing mounting arm 5-4.

[0039] Specifically, the swing arm mounting base 5-2 is the component that provides basic support for the entire vertical clamping mechanism. It can be implemented using a metal structure with sufficient strength and stability, with the aim of ensuring the overall stability of the mechanism's installation. The downward pressing mounting arm 5-4 and the external drive swing arm 5-8 form a linkage lever system. This system can be a combination of various linkage structures designed based on the lever principle, with the aim of accurately converting the linear thrust of the clamping cylinder 5-1 into a vertically downward pressing force. The inner connecting arm 5-3 is the component that connects the end of the external drive swing arm 5-8 to the middle of the downward pressing mounting arm 5-4. It can be implemented using a rigid linkage structure, with the aim of maintaining synchronous and coordinated movement.

[0040] like Figure 2As shown, the clamping base 2 includes a clamping body 2-1 mounted on the mounting base 1. The clamping body 2-1 has an L-shaped structure. The adjusting assembly 3 is installed on the upright plate of the clamping body 2-1. A T-shaped groove 2-2 extending along the length of the clamping body 2-1 is provided. A slider slides through the T-shaped groove 2-2, and a locking knob screwed onto the slider is also screwed into the T-shaped groove 2-2. The slider positioning block in the movable clamping assembly 6 is locked to the clamping body 2-1 by the locking knob. Based on the cross-sectional shape of the T-shaped groove 2-2, the slider is less likely to fall out during sliding, ensuring the continuity and reliability of the adjustment process. The slider slides within the T-shaped groove 2-2 and is locked by the locking knob. When adjusted to the desired position, tightening the locking knob securely fixes the slider within the T-shaped groove 2-2. Due to the screwing method between the locking knob and the slider, quick locking and releasing can be achieved through rotation, avoiding positioning deviations caused by cumbersome operations in traditional fixing methods. Overall, this structure achieves a balance between adjustment flexibility and locking reliability through the synergistic effect of the T-shaped slide 2-2 and the locking knob, significantly enhancing the tooling's adaptability to guide rails of different specifications.

[0041] The clamp body 2-1 is the basic component used to install and support the manual clamping device. It can be made of metal to ensure sufficient strength and rigidity. The L-shaped structure design provides a stable installation base and facilitates the centralized installation of the adjustment component 3, making the adjustment operation more convenient and not affecting the spatial layout of other components.

[0042] Working principle:

[0043] Mounting base 1 serves as the basic support platform for the entire tooling, providing a stable mounting foundation to reduce vibration interference during processing. Several manual clamping devices are fixedly mounted on mounting base 1 along its length. These manual clamping devices, through a multi-point distribution design, can adapt to the clamping requirements of guide rails of different lengths, thus avoiding frequent tooling changes due to variations in guide rail dimensions and significantly improving versatility. The core structure of the manual clamping device includes a clamping base 2, on which are mounted opposing movable clamping components 6 and fixed clamping components 7. The distance between them can be adjusted by adjusting component 3 to accommodate linear guide rails 8 of different specifications. The movable clamping component 6 is slidably connected to the clamping base 2, ensuring flexible movement of the movable part and facilitating precise adjustment by the operator according to actual needs.

[0044] Furthermore, the movable clamping assembly 6 and the fixed clamping assembly 7 have identical structures, both employing a clamping slider 7-2 and a slider positioning block 7-4 arranged in opposite directions and forming a right-angled trapezoidal structure. The inclined surfaces of the clamping slider 7-2 and the slider positioning block 7-4 are aligned and slide together. A groove and a slider are provided on the mating inclined surfaces to ensure smooth and stable sliding and prevent misalignment. When the clamping slider 7-2 moves downward, it moves inward using the geometric properties of the inclined surface, thus achieving an adaptive clamping effect. In addition, a locking mechanism is provided between the clamping slider 7-2 and the slider positioning block 7-4 to lock the connection after adjustment, preventing loosening due to vibration during processing and ensuring stable and long-lasting clamping.

[0045] Meanwhile, several pneumatic clamping assemblies 5, distributed along the length of the mounting base 1, are also installed on it. These assemblies are used to press down and fix the linear guide rail 8, providing automatic and uniform vertical pressure to effectively suppress minor displacements during processing and prevent weld deviations. The pneumatic clamping assemblies 5 work in conjunction with the manual clamping device to form a high-precision and highly adaptable fixing system. Specifically, the manual clamping device adjusts the spacing of the adjusting assembly 3 to adapt to different guide rails, while the pneumatic clamping assemblies 5 supplement the vertical clamping force to ensure that the linear guide rail 8 remains stable throughout the entire processing.

[0046] Therefore, this technical solution systematically solves the problems of insufficient positioning accuracy, difficulty in adapting to different specifications of guide rails, need for frequent tooling changes, and unstable clamping leading to slight displacement and weld deviation in linear guide rail processing by integrating an adjustable-spacing manual clamping device and a pneumatic clamping component, combined with a unique clamping structure design. At the same time, it significantly improves the versatility and stability of the overall tooling.

Claims

1. A linear guide machining fixture, characterized in that: The system includes a mounting base (1) on which several manual clamping devices are fixedly mounted along its length; it also includes several pneumatic clamping assemblies (5) mounted on the mounting base (1) along its length for pressing down on and fixing the linear guide rail (8); the manual clamping devices include a clamping seat (2) mounted on the mounting base (1), on which a movable clamping assembly (6) and a fixed clamping assembly (7) are mounted opposite to each other, the distance between the movable clamping assembly (6) and the fixed clamping assembly (7) is adjustable, and the movable clamping assembly (6) is slidably connected to the clamping seat (2); it also includes an adjusting assembly (3) mounted on the clamping seat (2) for adjusting The distance between the movable clamping assembly (6) and the fixed clamping assembly (7) is specified. The movable clamping assembly (6) and the fixed clamping assembly (7) have the same structure. The fixed clamping assembly (7) includes a clamping slider (7-2) and a slider positioning block (7-4) arranged in opposite directions and having a right-angled trapezoidal structure. The inclined surfaces of the clamping slider (7-2) and the slider positioning block (7-4) are in contact with each other and slide in fit. A sliding groove and a slider are provided on the mating inclined surfaces of the clamping slider (7-2) and the slider positioning block (7-4) so ​​that the clamping slider (7-2) moves inward when it moves downward. A locking mechanism is provided between the clamping slider (7-2) and the slider positioning block (7-4) to lock the two together.

2. The linear guide machining fixture as described in claim 1, characterized in that: The locking mechanism includes a guide strip hole (7-3) on the top of the clamping slider (7-2) that connects its top surface and the inclined surface. A locking bolt (7-1) is inserted in the guide strip hole (7-3). The locking bolt (7-1) is inserted in a slot on the inclined surface of the slider positioning block (7-4) and is screwed into the slider positioning block (7-4).

3. The linear guide machining fixture as described in claim 1, characterized in that: The adjustment assembly (3) includes a mounting guide sleeve (3-1) connected to the clamping seat (2), a guide sleeve end cap (3-2) detachably connected to the outer end opening of the mounting guide sleeve (3-1), an adjustment screw (3-4) rotatably connected to the guide sleeve end cap (3-2) at the center of the guide sleeve end cap (3-2), and an adjustment handwheel (3-3) installed at the outer end of the adjustment screw (3-4); it also includes a telescopic sleeve (3-5) slidably connected to the mounting guide sleeve (3-1), the telescopic sleeve (3-5) being threadedly connected to the adjustment screw (3-4), and the inner end of the telescopic sleeve (3-5) being connected to the corresponding movable clamping assembly (6).

4. The linear guide machining fixture as described in claim 3, characterized in that: The adjustment assembly (3) also includes a telescopic guide bar (3-6) that is detachably connected to the top of the inner cavity of the mounting guide sleeve (3-1). The length direction of the telescopic guide bar (3-6) is consistent with the axial direction of the adjustment screw (3-4). A guide groove extending along its axial direction is provided on the outer peripheral wall of the telescopic sleeve (3-5), and the telescopic guide bar (3-6) slides through the guide groove.

5. The linear guide machining fixture as described in claim 1, characterized in that: The pneumatic clamp assembly (5) includes a clamp seat (5-10) mounted on a mounting base (1), a cylinder hinge seat (5-9) fixedly connected to the clamp seat (5-10), and a clamp cylinder (5-1) pivotally connected to the cylinder hinge seat (5-9); it also includes a vertical clamping mechanism mounted on the clamp seat (5-10), the drive end of the vertical clamping mechanism being pivotally connected to the extension end of the clamp cylinder (5-1).

6. The linear guide machining fixture as described in claim 1, characterized in that: It also includes several pneumatic clamping components (4) that are distributed along the length of the mounting base (1) and located on the same side as several movable clamping components (6), for automatically positioning the linear guide rail (8); the pneumatic clamping components (4) include a mounting pad (4-1) mounted on the mounting base (1), a guide groove block (4-3) fixedly connected to the mounting pad (4-1), a sliding groove is provided on the top of the guide groove block (4-3) and a clamping top block (4-2) slides through the sliding groove, and a limit cover (4-4) is installed on the top of the guide groove block (4-3); it also includes a clamping cylinder seat (4-5) mounted on the mounting pad (4-1), a horizontally arranged clamping cylinder (4-6) mounted on the clamping cylinder seat (4-5), and the clamping top block (4-2) is connected to the extended end of the clamping cylinder (4-6).

7. The linear guide machining fixture as described in claim 1, characterized in that: It also includes several limiting blocks (9) installed on the clamping seat (2) at one end and limiting blocks (10) installed on the clamping seat (2) at the other end, for clamping and limiting the end of the linear guide (8).

8. The linear guide machining fixture as described in claim 5, characterized in that: The vertical clamping mechanism includes a swing arm mounting base (5-2) mounted on a clamping seat (5-10). A lower pressing mounting arm (5-4) is pivotally connected to the upper part of the swing arm mounting base (5-2), and an outer drive swing arm (5-8) is pivotally connected to the lower part. An inner connecting arm (5-3) is pivotally connected between the end of the outer drive swing arm (5-8) and the middle part of the lower pressing mounting arm (5-4). The outer ends of the outer drive swing arm (5-8) and the inner connecting arm (5-3) are pivotally connected to the extended end of the clamping cylinder (5-1) via pins. A mounting groove is provided at the outer end of the pressing mounting arm (5-4), and screw slides (5-6) are provided above and below the mounting groove. It also includes a pressure block screw (5-5) that passes through the mounting groove and through the two screw slides (5-6). A rubber pressing block (5-7) is installed at the lower end of the pressure block screw (5-5). A locking nut is screwed into the upper part of the pressure block screw (5-5) to lock the pressure block screw (5-5), screw slides (5-6) and pressing mounting arm (5-4) together.

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