Long part head positioning and pressing device

Abstract

The utility model discloses a long part head positioning and pressing device which comprises a tool frame, a side face clamping assembly and an end pressing assembly. The side face clamping assembly is arranged on the tool frame and used for clamping an assembly workpiece in a side face mode. The end pressing assembly is arranged on the tool frame and used for positioning and clamping the longitudinal end of the workpiece. According to the long part head positioning and pressing device, through the arrangement of the side face clamping assembly composed of the screw, the pressing block, the positioning block and the like which are installed on the tool frame, after a workpiece is placed, the workpiece can reliably abut against the positioning block by manually twisting a handle and pushing the pressing block, rapid positioning and clamping in the horizontal direction are achieved, and the positioning precision and the assembling reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a positioning and clamping device for the head of a long part. Background Technology

[0002] In the field of mechanical manufacturing, especially in the processing of long load-bearing parts (such as beams, booms, and other suspended structures), the structural design and positioning method of the part head have a significant impact on the processing quality and efficiency of the workpiece. Due to their working characteristics, these parts usually need to connect to other functional components in the head area. Therefore, in the structural design, the head size should be minimized as much as possible while ensuring strength, in order to facilitate assembly and positioning operations.

[0003] In actual processing, to achieve effective positioning, mechanical structures such as pressure blocks are typically used to press down the head of the part to prevent tilting due to its long length. However, during workpiece loading, due to the overall length of the workpiece, it is often lifted and moved using a hoisting method, resulting in a significant vertical lifting and lowering process. When the workpiece descends close to the fixture, if the part is not yet fully positioned, its head is highly susceptible to interference or collision with the pressing mechanism. This can damage the workpiece head or the pressure block itself, and may also cause instability of the entire fixture, affecting positioning accuracy and processing quality. To avoid these problems, a common method is to adjust the workpiece hoisting path to avoid the pressure block area or reduce the loading speed. However, these methods generally have the following drawbacks: firstly, they require precise manual control of the workpiece's descent path and attitude, which is difficult to operate and carries a high safety risk; secondly, to reduce errors and avoid collisions, the loading process usually needs to be completed at a slower speed, leading to a decrease in overall work efficiency and hindering the requirements of a high-efficiency production line. Utility Model Content

[0004] The purpose of this invention is to provide a positioning and clamping device for the head of a long part, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a head positioning and clamping device for elongated parts, comprising:

[0006] Tool rack;

[0007] A side clamping assembly for side-clamping workpieces, mounted on a tooling fixture;

[0008] An end clamping assembly installed on a tooling frame for positioning and clamping the longitudinal end of a workpiece.

[0009] Preferably, the tooling frame is L-shaped, with a flange on one side for connecting to the positioner.

[0010] Preferably, the side clamping assembly includes a mounting base and a support base, which are disposed opposite to each other on the tooling frame.

[0011] Preferably, a screw is threaded onto the mounting base, and a pressure block is fixedly connected to one end of the screw near the support base.

[0012] Preferably, a handle is fixedly connected to the end of the screw away from the pressure block.

[0013] Preferably, a positioning block is fixedly provided on the support base on the side near the pressure block.

[0014] Preferably, the end clamping assembly includes a lead screw component disposed vertically on the tooling frame, and the lead screw component is tractively connected to a slide.

[0015] Preferably, a clamping block is rotatably connected to the slide.

[0016] Preferably, the clamping block is connected to a rotating shaft, and the clamping block is rotatably connected to the slide block via the rotating shaft. The clamping block has a shaft hole for the rotating shaft to pass through.

[0017] Preferably, the end clamping assembly further includes a pin rod, a pin seat, a threaded hole, a positioning hole, a pin hole, a pin cap, a positioning groove, and a positioning part. The pin seat is installed on the clamping block through the threaded hole, the pin rod is inserted into the pin hole and fixedly connected to the pin cap, and the pin cap is provided with a positioning part that inserts into the positioning groove for locking and releasing the rotational position of the clamping block.

[0018] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0019] This long part head positioning and clamping device, through a side clamping assembly consisting of a screw, pressure block, and positioning block mounted on a tooling frame, allows for rapid horizontal positioning and clamping of the workpiece after placement by manually turning the handle to push the pressure block against the positioning block, improving positioning accuracy and assembly reliability. The end clamping assembly drives the clamping block vertically via a lead screw, reliably clamping one end of the workpiece downwards, preventing it from tilting during processing and effectively ensuring structural stability. Through mechanisms such as a rotating shaft and pins, the clamping block can be manually rotated to deviate from its position during workpiece unloading, preventing interference with the workpiece's descent path, improving tooling adaptability, avoiding damage to the workpiece or tooling, and enhancing overall system safety. The device is suitable for hoisting or RGV handling, supports automated loading and unloading processes, reduces manual intervention, and improves production efficiency and operational safety. It is suitable for batch production needs, with clearly defined component connections and convenient installation and adjustment. In particular, the clamping and rotation locking mechanism is simple and practical, reducing maintenance complexity and making it suitable for processing various specifications of long, heavy-duty workpieces. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the end clamping assembly of this utility model.

[0022] In the diagram: 1. Tooling frame; 2. Side clamping assembly; 3. End clamping assembly; 4. Flange; 201. Mounting base; 202. Screw; 203. Pressure block; 204. Handle; 205. Positioning block; 206. Support base; 301. Lead screw assembly; 302. Slide; 303. Pressure block; 304. Positioning seat; 305. Abutment block; 306. Rotating shaft; 307. Pin rod; 308. Pin seat; 309. Shaft hole; 310. Threaded hole; 311. Positioning hole; 312. Pin hole; 313. Positioning groove; 314. Pin cap; 315. Positioning part. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1 and Figure 2 As shown, a head positioning and clamping device for an elongated part includes a fixture frame 1; a side clamping assembly 2 for side clamping of the workpiece, which is disposed on the fixture frame 1; and an end clamping assembly 3 for positioning and clamping the longitudinal end of the workpiece, which is disposed on the fixture frame 1.

[0025] The device uses a fixture frame 1 as its structural foundation, providing stable support. Side clamping components 2 are mounted on the fixture frame 1, laterally clamping the workpiece on both sides along its length, achieving stable position control during processing or inspection. End clamping components 3 are also mounted on the fixture frame 1, located at the longitudinal end of the workpiece. They act on the end of the workpiece through a pressure mechanism (such as a cylinder, screw, or spring assembly), achieving longitudinal positioning and clamping of the workpiece. The side clamping components 2 and end clamping components 3 work together to form a stable three-dimensional fixation of the elongated workpiece, effectively preventing slippage, offset, and tilting during operation. This device solves the problem of existing clamping schemes' difficulty in reliably positioning and firmly clamping the head of elongated workpieces. Its simple structure and strong adaptability allow for adjustments according to workpieces of different sizes, effectively improving clamping efficiency and positioning accuracy, reducing the frequency of manual intervention, and thus improving the overall quality and consistency of processing or assembly. Furthermore, its modular design facilitates maintenance and replacement, improving the equipment's service life and economy.

[0026] In practical implementation, the side clamping assembly 2 can adopt different structural forms, such as spiral clamping, pneumatic clamping, or elastic components with self-adjusting functions, to adapt to workpieces of different sizes or shapes; the end clamping assembly 3 can also be a hydraulic cylinder, eccentric wheel mechanism, or manual clamping device, selecting the appropriate solution according to the actual application scenario. Furthermore, the tooling frame 1 can be designed as a modular structure with adjustable width and height, improving its adaptability to various types of workpieces. The overall device can also integrate sensors or positioning pin structures for automatic identification and assisted positioning, enhancing its level of intelligence.

[0027] The tooling frame 1 is L-shaped, with a flange 4 on one side for connection to the positioner. In this embodiment, the tooling frame 1 is designed with an L-shaped structure, which provides good structural stability and space utilization. The flange 4 is installed on the vertical part of one side, and this flange 4 connects to the positioner, realizing reliable installation and rotational transmission between the tooling frame 1 and the positioning mechanism. Through this connection method, the tooling frame 1 can complete rotation or flipping operations at a certain angle under the drive of the positioner, meeting the clamping, welding, or inspection needs between different workstations. The L-shaped structure not only facilitates the installation layout of the side clamping component 2 and the end clamping component 3, but also facilitates the implementation of clamping forces in three dimensions, improving the overall system rigidity and operational flexibility. Compared with the traditional rectangular structure, the L-shaped tooling frame 1 has better mechanical support characteristics, especially higher stability when rotating or tilting for positioning. The flange 4 allows the device to quickly connect with the positioner, supporting automated assembly line operations and improving work efficiency and equipment versatility. Meanwhile, this structure facilitates spatial partitioning, helps optimize operational processes, and shortens clamping preparation time. Furthermore, the L-shaped fixture has a stronger load-bearing capacity for loading in different directions, effectively reducing structural deformation and improving positioning accuracy and consistency in repeated clamping.

[0028] In practical applications, the L-shaped structure of tooling holder 1 can be deformed according to workpiece size and available space, for example, designed as an inverted T-shape, U-shape, or Z-shape to adapt to specific process layouts. Flange 4 can also adopt quick-change interfaces, universal connections, or structures with locating pins to enhance versatility and convenience. Furthermore, the mounting position of flange 4 can be adjusted to the center or offset arrangement to meet specific eccentric rotation requirements, enhancing operational flexibility and stability. For non-standard displacement mechanisms, intermediate conversion connectors can also be used to match tooling holder 1, achieving cross-equipment universality.

[0029] The side clamping assembly 2 includes a mounting base 201 and a support base 206, which are disposed opposite to each other on the tooling frame 1. In this embodiment, the side clamping assembly 2 consists of the mounting base 201 and the support base 206, which are arranged opposite each other on opposite sides of the tooling frame 1 to form a clamping area. The mounting base 201 is usually equipped with a movable clamping mechanism, such as a slide rail type pressure plate, a pneumatic push block, or a screw drive assembly, for applying a lateral clamping force to the workpiece located therebetween; the support base 206 provides rigid support, withstands the reverse force, and stabilizes the position of the workpiece. When the workpiece is placed between the two, the mounting base 201 moves towards the support base 206 through a drive device to achieve tight clamping of both sides of the workpiece, ensuring the stability and positional repeatability of the workpiece during the clamping process. By setting the mounting base 201 and the support base 206 to form a symmetrical clamping structure, the clamping reliability and the stability of the workpiece are effectively improved. This structure is simple in design, easy to manufacture and maintain, and suitable for long parts with various cross-sectional sizes and shapes. Adjustable or modular mounting structures facilitate quick replacement of fixture components, enabling the clamping system to be universal and multifunctional, improving equipment efficiency and tooling adaptability. Furthermore, the bidirectional clamping structure helps reduce workpiece sway or vibration under external forces, ensuring the accuracy requirements of subsequent processing or inspection procedures.

[0030] A screw 202 is threaded onto the mounting base 201, and a pressure block 203 is fixedly connected to one end of the screw 202 near the support base 206. This embodiment achieves the mechanical adjustment function of the clamping mechanism by providing a screw 202 threadedly connected to the mounting base 201. The user rotates the screw 202, causing it to move axially within the threaded structure of the mounting base 201. The pressure block 203 is located at the end of the screw 202 near the support base 206. Driven by the screw 202, the pressure block 203 gradually moves towards the support base 206. When the workpiece is placed between the pressure block 203 and the support base 206, continued rotation of the screw 202 gradually applies clamping force to the workpiece, ultimately achieving a firm clamping of the workpiece's side. This structure utilizes the helical drive principle, combined with the planar contact characteristics of the pressure block 203, effectively improving clamping stability and ease of operation. The clamping mechanism employing a threaded drive structure has the advantages of precise adjustment and stable torque. The screw 202, in conjunction with the mounting base 201, enables linear movement, flexibly adapting to workpieces of varying thicknesses and offering excellent versatility and adjustability. The pressure block 203 provides surface contact clamping to the workpiece, increasing the contact area, reducing localized stress concentration, and preventing surface damage. Furthermore, the entire structure is compact, easy to install and maintain, making it particularly suitable for reliable clamping in confined spaces. The mechanical clamping method offers excellent repeatability and high load-bearing capacity, making it suitable for medium to high-strength clamping requirements.

[0031] A handle 204 is fixedly connected to the end of the screw 202 away from the pressure block 203. In this embodiment, a handle 204 is provided at the end of the screw 202 away from the pressure block 203 for manual rotation of the screw 202. The operator can rotate the handle 204 to move the screw 202 back and forth in the threaded structure of the mounting base 201, thereby driving the pressure block 203 to move towards the support base 206, thus clamping or releasing the workpiece. The handle 204 is designed as a knob, folding, or T-shaped structure for easy gripping and force application, improving operating efficiency. This mechanism ensures the controllability and reliability of the clamping action through manual rotation adjustment, while requiring no additional power device, making it suitable for compact and frequently operated work scenarios.

[0032] A positioning block 205 is fixedly installed on the support base 206 near the pressure block 203. In this embodiment, the positioning block 205 is provided on the side of the support base 206 near the pressure block 203. This positioning block 205 is used to initially guide and limit the position of the workpiece. When the workpiece is placed in the clamping area, it first contacts the positioning block 205. The surface or edge of the positioning block 205 helps to initially position the workpiece laterally or longitudinally, guiding the workpiece to correctly enter the clamping area. The pressure block 203 is then pushed to the side of the workpiece under the drive of the screw 202, realizing the clamping and fixing of the workpiece. The setting of the positioning block 205 allows the workpiece to obtain a clear spatial reference in the initial stage of clamping, reducing the requirement for manual centering and improving clamping efficiency and consistency.

[0033] The end clamping assembly 3 includes a lead screw component 301 vertically mounted on the fixture 1, and a slide block 302 is drivenly connected to the lead screw component 301. In this embodiment, the end clamping assembly 3 is vertically mounted on the fixture 1 via the lead screw component 301 to achieve clamping action at the longitudinal end. The lead screw component 301 typically consists of a threaded rod and a drive structure (such as a handwheel, motor, or knob), and its helical rotation can be converted into linear movement. The slide block 302 is threadedly connected to or guided by the lead screw component 301 and moves up and down as it rotates. When it is necessary to clamp the workpiece, the operator rotates the lead screw component 301, causing the slide block 302 to descend vertically, ultimately applying pressure and clamping to the end of the workpiece located directly below the slide block, thus completing the longitudinal positioning and fixing.

[0034] A clamping block 303 is rotatably connected to the slide 302. In this embodiment, a rotatably connected clamping block 303 is provided on the slide 302, which, in conjunction with the lead screw component 301, drives the slide 302 to move vertically, thereby applying a vertical clamping force to the end of the workpiece. The clamping block 303 is connected to the slide 302 via a pin, pivot, or ball joint structure, allowing it to rotate within a certain range or automatically adjust its angle to conform to the surface shape of the workpiece end. When the slide 302 descends to the contact position with the end of the workpiece, the clamping block 303 automatically adjusts its contact posture to form a larger contact area or a point-line combination contact, enhancing clamping stability and reducing local stress concentration, thereby achieving reliable positioning and clamping of the workpiece end.

[0035] The clamping block 303 is connected to a rotating shaft 306, and the clamping block 303 is rotatably connected to the slide block 302 via the rotating shaft 306. The clamping block 303 has a shaft hole 309 for the rotating shaft 306 to pass through. This embodiment further refines the rotatable connection structure between the clamping block 303 and the slide block 302. The clamping block 303 has a shaft hole 309, through which the rotating shaft 306 passes and is installed on both sides of the slide block 302 in an appropriate manner (such as riveting at both ends, snap-fit, or screw fixing), thereby enabling the clamping block 303 to rotate freely relative to the slide block 302. When the slide block 302 moves vertically under the drive of the lead screw component 301 and contacts the end of the workpiece, the clamping block 303 can rotate around the rotating shaft 306, automatically adjusting its contact angle to fit the end of the workpiece with different geometric shapes or surface inclinations, achieving a stable and reliable clamping effect.

[0036] The end clamping assembly 3 also includes a pin 307, a pin seat 308, a threaded hole 310, a positioning hole 311, a pin hole 312, a pin cap 314, a positioning groove 313, and a positioning part 315. The pin seat 308 is installed on the clamping block 303 through the threaded hole 310. The pin 307 is inserted into the pin hole 312 and fixedly connected to the pin cap 314. The pin cap 314 is provided with a positioning part 315 that is inserted into the positioning groove 313, which is used to lock and release the rotational position of the clamping block 303.

[0037] This embodiment adds a rotation locking and release mechanism to the rotational structure between the clamping block 303 and the slide 302. The pin seat 308 is mounted on the clamping block 303 through the threaded hole 310, forming a fixed mounting platform. The pin rod 307 can be inserted axially into the pin hole 312, with one end fixedly connected to the pin cap 314, and the other end entering the positioning hole 311 in the slide 302 or the clamping structure. The positioning part 315 of the pin cap 314 can be inserted into a preset positioning groove 313 to lock the clamping block 303 at a specific angular position. When it is necessary to adjust the angle of the clamping block 303 or to perform a loosening operation, the pin rod 307 can be pulled out, releasing the locking of the positioning part 315 to the positioning groove 313, achieving quick release and readjustment.

[0038] Working process: The operator places the long workpiece to be processed on the tooling frame 1, so that the two sides of the workpiece are close to the clamping area between the support seat 206 and the mounting seat 201 respectively, and aligns the longitudinal end of the workpiece with the end clamping area.

[0039] The operator rotates the screw 202, causing the pressure block 203 fixedly connected to it to move closer to the support seat 206 along the threaded direction. During the advancement process, the pressure block 203 gradually contacts the workpiece and presses it against the support seat 206 to achieve lateral clamping. At this time, the workpiece is reliably fixed in the lateral direction.

[0040] Next, the vertical lead screw component 301, which is mounted on the tooling frame 1, is started or manually rotated, causing the slide block 302, which is connected to it, to move downward in the vertical direction. A clamping block 303 is rotatably connected to the slide block 302, which is mounted on the slide block 302 via a rotating shaft 306, allowing for a certain angle adjustment when in contact with the end of the workpiece.

[0041] After the clamping block 303 is pressed down to the end of the workpiece and clamping is completed, the operator pushes the pin rod 307 to pass through the pin hole 312 and connect with the pin cap 314. The positioning part 315 on the pin cap 314 is inserted into the positioning groove 313 set on the slide 302, thus locking the angular position of the clamping block 303. The pin seat 308 is fixedly installed on the clamping block 303 through the threaded hole 310, forming a controllable rotation positioning and release system.

[0042] At this point, the workpiece is stably clamped in both the lateral and longitudinal directions, with controllable clamping force and high positioning accuracy, making it suitable for the next step of processing, welding, or inspection.

[0043] After the operation is completed, the operator first pulls out the pin 307 to release the locking block 303. Then, by rotating the screw component 301 in the opposite direction, the slide block 302 is raised to release the longitudinal clamping. Subsequently, the screw 202 is rotated in the opposite direction to retract the locking block 203, completing the lateral loosening. After the workpiece is removed, the next workpiece can be placed and the next cycle of the work process can begin.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A head positioning and clamping device for an elongated part, characterized in that, include: Tool rack (1); A side clamping assembly (2) for side clamping of the workpiece is provided on the tooling frame (1); An end clamping assembly (3) is installed on the tooling frame (1) for positioning and clamping the longitudinal end of the workpiece.

2. The head positioning and clamping device for an elongated part according to claim 1, characterized in that: The tooling frame (1) is L-shaped, and a flange (4) for connecting to the positioner is provided on one side.

3. The head positioning and clamping device for an elongated part according to claim 1, characterized in that: The side clamping assembly (2) includes a mounting base (201) and a support base (206), which are disposed opposite to each other on the tooling frame (1).

4. The elongated part head positioning and clamping device according to claim 3, characterized in that: A screw (202) is threaded onto the mounting base (201), and a pressure block (203) is fixedly connected to one end of the screw (202) near the support base (206).

5. The head positioning and clamping device for an elongated part according to claim 4, characterized in that: A handle (204) is fixedly connected to one end of the screw (202) away from the pressure block (203).

6. The head positioning and clamping device for an elongated part according to claim 5, characterized in that: A positioning block (205) is fixedly installed on the support base (206) on the side near the pressure block (203).

7. The head positioning and clamping device for an elongated part according to claim 1, characterized in that: The end clamping assembly (3) includes a lead screw component (301) arranged vertically on the tooling frame (1), and the lead screw component (301) is connected to a slide (302).

8. The head positioning and clamping device for an elongated part according to claim 7, characterized in that: A clamping block (303) is rotatably connected to the slide (302).

9. The head positioning and clamping device for an elongated part according to claim 8, characterized in that: The clamping block (303) is connected to a rotating shaft (306). The clamping block (303) is rotatably connected to the slide (302) via the rotating shaft (306). The clamping block (303) has a shaft hole (309) for the rotating shaft (306) to pass through.

10. The head positioning and clamping device for an elongated part according to claim 9, characterized in that: The end clamping assembly (3) further includes a pin rod (307), a pin seat (308), a threaded hole (310), a positioning hole (311), a pin hole (312), a pin cap (314), a positioning groove (313), and a positioning part (315). The pin seat (308) is installed on the clamping block (303) through the threaded hole (310). The pin rod (307) is inserted into the pin hole (312) and fixedly connected to the pin cap (314). The pin cap (314) is provided with a positioning part (315) that inserts into the positioning groove (313) for locking and releasing the rotational position of the clamping block (303).

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