A clamping tool for four-face rotary machining

Abstract

The utility model discloses a kind of clamping tool for four-face rotary processing of lying, it is related to the field of machining.It is used for the clamping of four-face thin-walled workpiece, four-face thin-walled workpiece includes mutually parallel first outer wall and third outer wall and second outer wall and fourth outer wall, first outer wall and second outer wall are perpendicular, four-face thin-walled workpiece is internally provided with cylindrical cavity, tool includes clamping unit and expanding tire unit, clamping unit includes lower bottom plate and upper pressing plate, lower bottom plate and upper pressing plate are connected by bolt, the upper surface of lower bottom plate and the lower surface of upper pressing plate are respectively matched with the outer surface shape of first outer wall and third outer wall or second outer wall and fourth outer wall;Expanding tire unit includes three pieces of conical blocks arranged on mandrel, rubber ring is sleeved outside conical block. Through tool combination clamping, workbench can rotate tool to complete the overall processing of 4 faces when machining. Solve artificial clamping time and the situation that one kind of product is simultaneously used in multiple machine tools.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a clamping fixture used for horizontal machining with four-sided rotation. Background Technology

[0002] In the field of modern machining, as product complexity increases, traditional machining methods often face the problem of low efficiency. Taking a certain type of product as an example, it requires machining on four sides, and the current machining process mainly relies on multiple clamping operations using CNC lathes and vertical machining centers. However, this multiple clamping method not only increases the time cost of manual clamping but also leads to low machining efficiency. Furthermore, it requires the simultaneous use of multiple machine tools, further exacerbating the complexity of equipment resource occupation and scheduling.

[0003] The root of the problem lies in the fact that traditional machining methods cannot achieve simultaneous processing of multiple surfaces. Each surface requires individual clamping and positioning, resulting in machining time being fragmented by multiple clamping and equipment switching. In addition, the use of multiple machine tools not only increases equipment depreciation and maintenance costs but also places higher demands on the coordination of production planning.

[0004] To address this issue, we propose an innovative machining solution: by designing a modular tooling and combining it with a rotary table, we can achieve overall machining of all four sides of the product. Specifically, the core of this solution lies in the modular design of the tooling and the rotation function of the rotary table. The tooling design ensures that after a single clamping, the rotary table sequentially completes the machining of all four sides, thus avoiding the tedious operation of multiple clamping operations. The introduction of the rotary table makes the machining process smoother, reduces manual intervention, and improves machining accuracy.

[0005] Furthermore, this solution significantly reduces the need for multiple machine tools. Traditionally, CNC lathes and vertical machining centers are required to machine different surfaces separately, but through the design of combined tooling and a rotary table, all four surfaces can be machined on a single machine tool. This not only saves equipment resources but also simplifies the production process and reduces the complexity of equipment scheduling and maintenance. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a clamping fixture for horizontal machining with four-sided rotary machining. Through fixture assembly and clamping, the worktable can rotate during machining to complete the overall machining of one, two, three, or four sides. This solves the problems of time spent on manual clamping and the need for multiple machine tools to operate simultaneously on the same product.

[0007] To achieve the above objectives, this application discloses a clamping fixture for horizontal machining with four-sided rotary motion, used for clamping a four-sided thin-walled workpiece. The four-sided thin-walled workpiece includes a first outer wall and a third outer wall, as well as a second outer wall and a fourth outer wall, which are parallel to each other. The first outer wall and the second outer wall are perpendicular to each other. A cylindrical cavity is provided inside the four-sided thin-walled workpiece. The fixture includes a clamping unit and an expansion unit. The clamping unit includes a lower base plate and an upper pressure plate. The lower base plate and the upper pressure plate are connected by bolts. The upper surface of the lower base plate and the lower surface of the upper pressure plate are respectively fitted with the outer surface shapes of the first outer wall and the third outer wall or the second outer wall and the fourth outer wall. The expansion unit includes a three-lobed conical block disposed on a mandrel. A rubber ring is sleeved on the outside of the conical block.

[0008] Furthermore, the lower base plate includes a base plate body, with both ends of the base plate body extending upward to form side platforms, and threaded holes provided on the side platforms, the threaded holes cooperating with bolts.

[0009] Furthermore, the upper pressure plate includes a pressure plate body, with both ends of the pressure plate body extending downward to form pressure edges, and through holes provided on the pressure edges to accommodate the bolts passing through.

[0010] Beneficial effects of the technical solution of this utility model

[0011] By designing this fixture and combining it with a rotary table, the entire process of machining all four sides of a product can be achieved. Specifically, the core of this solution lies in the combined design of the fixture and the rotation function of the rotary table. The fixture design ensures that after a single clamping, the four sides of the product are machined sequentially via the rotary table, thus avoiding the tedious operation of multiple clamping operations. The introduction of the rotary table makes the machining process smoother, reduces manual intervention, and improves machining accuracy. This solution significantly improves machining efficiency. By reducing manual clamping time and equipment changeover time, machining time can be reduced by approximately 40%. Simultaneously, production costs are effectively controlled due to the reduced number of devices used. More importantly, this solution also improves machining accuracy because the cumulative errors caused by multiple clamping operations are effectively avoided.

[0012] Through innovative design of modular tooling and a rotary table, we have successfully solved the problems of multiple clamping and use of multiple machine tools in traditional machining methods, significantly improving machining efficiency and accuracy while reducing production costs. This solution is not only applicable to current product machining needs but can also be extended to other similar scenarios, providing an efficient and economical solution for the machining field. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the four-sided thin-walled workpiece of this utility model;

[0015] Figure 2 This is a schematic diagram of the clamping unit in this utility model;

[0016] Figure 3 This is a schematic diagram of the tire expansion unit in this utility model;

[0017] Figure 4 This is a structural diagram of the present invention in use;

[0018] Among them: 100. Four-sided thin-walled workpiece, 101. First outer wall, 102. Second outer wall, 103. Third outer wall, 104. Fourth outer wall, 105. Cylindrical cavity, 200. Clamping unit, 210. Lower base plate, 211. Base plate body, 212. Side platform, 213. Threaded hole, 220. Upper pressure plate, 221. Pressure plate body, 222. Pressing edge, 223. Through hole, 230. Bolt, 300. Expansion unit, 310. Mandrel, 320. Three-lobed conical block, 330. Rubber ring. Detailed Implementation

[0019] 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.

[0020] Please refer to the examples. Figure 1-4A clamping fixture for horizontal machining with four-sided rotary machining is used to clamp a four-sided thin-walled workpiece 100. The four-sided thin-walled workpiece 100 includes a first outer wall 101 and a third outer wall 103, a second outer wall 102 and a fourth outer wall 104 that are parallel to each other. The first outer wall 101 and the second outer wall 102 are perpendicular to each other. A cylindrical cavity 105 is provided inside the four-sided thin-walled workpiece. The fixture includes a clamping unit 200 and an expansion unit 300. The clamping unit 200... The 0 includes a lower base plate 210 and an upper pressure plate 220, which are connected by bolts 230. The upper surface of the lower base plate 210 and the lower surface of the upper pressure plate 220 are respectively fitted with the outer surface shapes of the first outer wall 101 and the third outer wall 103 or the second outer wall 102 and the fourth outer wall 104. The expansion unit 300 includes a three-lobed conical block 320 disposed on the mandrel 310, and a rubber ring 330 is sleeved on the outside of the conical block.

[0021] Four-sided thin-walled workpiece 100: This is the object to be machined, having four mutually parallel or perpendicular outer walls 101, 102, 103, and 104, and containing an internal cylindrical cavity 105. The structural characteristics of the workpiece dictate that it requires a special clamping method during processing to avoid deformation or damage.

[0022] Clamping unit 200: Responsible for externally securing the workpiece to ensure its stability during processing. The clamping unit consists of a lower base plate 210 and an upper pressure plate 220, which are connected by bolts 230. The upper surface of the lower base plate and the lower surface of the upper pressure plate are designed to fit the shape of the outer wall of the workpiece, thereby achieving a tight fit and providing stable support.

[0023] Expansion unit 300: Used to internally expand and tighten the workpiece, further enhancing clamping stability. The expansion unit includes a mandrel 310, a three-lobed conical block 320, and a rubber ring 330. The conical block is fitted onto the mandrel, and the rubber ring is wrapped around the outside. Through the expansion of the conical block, the workpiece is evenly stressed internally, preventing deformation.

[0024] Threaded holes 213 and through holes 223 are used for bolt installation and fixing to ensure the stability of the clamping unit; side platform 212 and pressure edge 222 are connected to the lower base plate and upper pressure plate respectively, providing additional support and positioning functions.

[0025] When using this fixture, the four-sided thin-walled workpiece is first placed on the lower base plate 210, ensuring that the first outer wall 101 and the third outer wall 103, or the second outer wall 102 and the fourth outer wall 104, of the workpiece are completely in contact with the surfaces of the lower base plate and the upper pressure plate. Then, the upper pressure plate 220 is fixed to the lower base plate 210 using bolts 230, forming an external clamping. Next, the expansion unit 300 is inserted into the cylindrical cavity 105 of the workpiece, and the three-lobed conical block 320 is driven outward by the mandrel 310 to make the rubber ring 330 tightly contact the inner wall of the workpiece, thereby achieving internal tightening. The synergistic effect of external clamping and internal tightening ensures that the workpiece remains stable during processing, avoiding vibration or deformation.

[0026] The technical solution of the above embodiments, through the combined design of the clamping unit and the expansion unit, can simultaneously fix the workpiece from both the outside and the inside, ensuring the stability and accuracy of the clamping, and is particularly suitable for processing thin-walled workpieces. The expansion unit, through the elastic deformation of the rubber ring 330, ensures uniform stress distribution inside the workpiece, avoiding localized stress concentration and thus reducing the risk of workpiece deformation. The surface design of the clamping unit is adapted to fit the shape of the workpiece's outer wall, enabling it to adapt to four-sided thin-walled workpieces of different sizes and shapes, exhibiting high versatility. Through bolt connections and the expansion mechanism of the expansion unit, the clamping and disassembly process is simple and quick, improving processing efficiency.

[0027] This tooling solves the problem of easy deformation and difficulty in fixing of thin-walled workpieces on all four sides during processing by combining internal and external clamping methods. It significantly improves processing accuracy and efficiency, while reducing the risk of workpiece damage. It is an efficient and reliable processing solution.

[0028] Preferred, Reference Figure 4 In one specific embodiment, the lower base plate 210 includes a base plate body 211, with both ends of the base plate body extending upward to form side platforms 212. Each side platform 212 has a threaded hole 213, which engages with a bolt 230. The upper pressure plate 220 includes a pressure plate body 221, with both ends of the pressure plate body extending downward to form pressure edges 222. Each pressure edge 222 has a through hole 223 to accommodate the bolt 230.

[0029] 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 clamping fixture for horizontal machining with four-sided rotation, used for clamping a four-sided thin-walled workpiece (100), the four-sided thin-walled workpiece (100) comprising a first outer wall (101) and a third outer wall (103) parallel to each other, and a second outer wall (102) and a fourth outer wall (104), the first outer wall (101) and the second outer wall (102) being perpendicular, and the four-sided thin-walled workpiece having a cylindrical cavity (105) inside, characterized in that: The tooling includes a clamping unit (200) and a tire expansion unit (300). The clamping unit (200) includes a lower base plate (210) and an upper pressure plate (220). The lower base plate (210) and the upper pressure plate (220) are connected by bolts (230). The upper surface of the lower base plate (210) and the lower surface of the upper pressure plate (220) are respectively fitted with the outer surface shapes of the first outer wall (101) and the third outer wall (103) or the second outer wall (102) and the fourth outer wall (104). The tire expansion unit (300) includes a three-lobed conical block (320) disposed on a mandrel (310). A rubber ring (330) is sleeved on the outside of the conical block.

2. The clamping fixture for horizontal machining with four-sided rotary machining according to claim 1, characterized in that: The lower base plate (210) includes a base plate body (211), and the two ends of the base plate body extend upward to form side platforms (212). The side platforms (212) are respectively provided with threaded holes (213), and the threaded holes (213) are engaged with bolts (230).

3. The clamping fixture for horizontal machining with four-sided rotary machining according to claim 1, characterized in that: The upper pressure plate (220) includes a pressure plate body (221), and the two ends of the pressure plate body extend downward to form pressure edges (222). The pressure edges (222) are provided with through holes (223) to accommodate the bolts (230) to pass through.

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