A clamp for machining rear steering knuckle

Abstract

The utility model provides a kind of clamp for rear knuckle processing, clamp is set on four-axis rotary table, clamp includes the compression assembly of being respectively set in the upper and lower ends of the workbench of four-axis rotary table, compression assembly includes the multiple pressing plate of being set in the upper portion of workbench, multiple pressing plate is matched with the process table of piece to be machined, fixed piece is set between two pieces to be machined located on the same horizontal plane, fixed piece is provided with compression piece, the both ends of compression piece are respectively located on the process table of two pieces to be machined located on the same side, the utility model can be by the compression assembly of being set in the upper and lower ends of the workbench of four-axis rotary table to realize to four pieces to be machined are clamped and fixed once, cooperate the effect of four-axis rotary table to realize the high-efficiency fast machining operation of multiple processes to workpiece on workbench, greatly improve the processing efficiency, reduce the occupation of unnecessary equipment cost.

Description

Technical Field

[0001] This utility model relates to the field of product processing fixture equipment technology, specifically to a fixture for processing rear steering knuckles. Background Technology

[0002] With the rapid development of society, resource shortages and the urgent need for environmental improvement have become increasingly prominent. Meanwhile, especially with the rapid development of China's automotive industry, the automotive parts processing sector is constantly moving towards higher quality and higher efficiency.

[0003] Steering knuckles are an important safety component in the automotive chassis system. Currently, there are two processing methods: distributed processing and centralized processing. Due to the accumulation of repeated positioning errors and low accuracy of distributed processing, it has been gradually replaced by centralized processing. Dual-spindle or multi-spindle equipment is gradually being accepted.

[0004] The existing product structure is becoming increasingly complex. The steering knuckle structure has been upgraded from the original three-link to the current four-link and five-link, which places higher demands on the equipment. Previously, three-axis machining equipment could meet the product requirements, but now five-axis equipment is required. Moreover, only one product can be processed at a time, which reduces production efficiency and increases unnecessary equipment costs. Utility Model Content

[0005] In view of this, the present invention provides a fixture for machining rear steering knuckles. By designing a multi-station fixture in conjunction with a four-axis rotary table, four workpieces can be fixed and machined simultaneously, reducing unnecessary equipment costs and greatly improving production efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides a fixture for machining rear steering knuckles. The fixture is set on a four-axis rotary table. The base of the four-axis rotary table is fixed in a T-shaped groove on the work platform of the machining center through a T-shaped slider, screw, and nut. The brand of the four-axis rotary table is SCT Taiwan Shicheng, and the model is MD-320A. The fixture includes clamping components respectively set at the upper and lower ends of the worktable of the four-axis rotary table. The clamping components include multiple pressure plates set on the upper part of the worktable. The multiple pressure plates cooperate with the process table of the workpiece to be machined. A fixing component is set between two workpieces to be machined on the same horizontal plane. The fixing component is equipped with a clamping component, the two ends of which are respectively located on the process table of two workpieces to be processed on the same side. Fasteners for clamping and fixing the workpieces to be processed are respectively set on the axis of the process holes of two other workpieces to be processed on another horizontal plane. This utility model can achieve the clamping and fixing of four workpieces to be processed in one go by setting clamping components at the upper and lower ends of the worktable of the four-axis rotary table. With the help of the four-axis rotary table, it can realize the efficient and fast processing of workpieces on the worktable through multiple processes, which greatly improves the processing efficiency and reduces unnecessary equipment costs.

[0007] Each pressure plate has a threaded rod on its axis, and the pressure plate has an adjustment groove that matches the threaded rod. The threaded rod is inserted into the adjustment groove. Each pressure plate also has a telescopic sleeve on its outer side. The telescopic sleeve includes a fixed cylinder set on the worktable, a spring set inside the fixed cylinder, and a fixed rod set on the upper part of the spring. The upper part of the fixed rod is fixed to the pressure plate. The output rod of the telescopic sleeve is fixed to the pressure plate. Each threaded rod has a locking nut threadedly connected to its upper part.

[0008] The fixing component is a fixing screw, and the clamping component is a clamping plate. The clamping plate is sleeved on the outside of the fixing screw, and the upper part of the fixing screw is threaded with a fixing nut.

[0009] The fastener is a clamping screw. A threaded hole is provided on the worktable and on the axis of the clamping screw. The clamping screw is threaded into the threaded hole. The clamping part is sleeved on the outside of the clamping screw. A clamping nut is threaded on the outside of the clamping screw and on the outside of the clamping part.

[0010] The workbench is also equipped with a positioning seat, on which a limit screw is threadedly connected for pressing the workpiece.

[0011] A positioning pin that matches the positioning hole of the workpiece is provided on the worktable on the same side as the fastener.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. Save equipment costs and improve processing efficiency: This utility model can achieve the processing of four workpieces by clamping components set on the upper and lower surfaces of the four-axis rotary table at one time, which greatly improves processing efficiency and reduces unnecessary cost.

[0014] 2. Improve the stability of workpiece processing: This utility model can achieve the clamping and fixing of the workpiece and the side wall by means of the cooperation of the fixing parts and fasteners set on the worktable, which greatly improves the stability of workpiece processing, reduces the aggravated tool wear caused by the vibration of the workpiece, and avoids the problem of large roughness of the machined surface caused by the vibration of the workpiece during the processing operation. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the fixture for machining the rear steering knuckle according to this utility model;

[0016] Fig. 2 This is an isometric view of the fixture for machining the rear steering knuckle of this utility model;

[0017] Fig. 3 This is a front view of the fixture for machining the rear steering knuckle according to this utility model.

[0018] Explanation of reference numerals in the attached drawings: 100, four-axis rotary table; 101, worktable; 200, clamping assembly; 210, pressure plate; 211, threaded rod; 212, adjusting groove; 220, fixing part; 221, clamping screw; 230, clamping part; 240, fastener; 250, telescopic sleeve rod; 260, positioning seat; 270, limit screw. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figs. 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] like Figs. 1-3 As shown: This embodiment provides a fixture for machining a rear steering knuckle. The fixture is mounted on a four-axis rotary table 100. The base of the four-axis rotary table 100 is fixed in a T-shaped groove on the work platform of the machining center via a T-shaped slider, screw, and nut. The brand of the four-axis rotary table 100 is SCT Taiwan Shicheng, and the model is MD-320A. The fixture includes clamping assemblies 200 respectively mounted at the upper and lower ends of the worktable 101 of the four-axis rotary table 100. The clamping assemblies 200 include multiple pressure plates 210 mounted on the upper part of the worktable 101. The multiple pressure plates 210 cooperate with the process table of the workpiece to be machined, such as... Fig. 1As shown, there are four pressure plates 210, arranged in pairs. Each pair of pressure plates 210 corresponds to two process tables of one workpiece to be processed. A fixing member 220 is provided between the two workpieces to be processed on the same horizontal plane. A clamping member 230 is provided on the fixing member 220. The clamping member 230 is a clamping plate. If necessary, copper pressure heads can be detachably installed at the ends of the pressure plates 210 and the clamping plates. This allows for the replacement of only the pressure heads when they wear out, so that the workpiece clamping and fixing operation can continue without disassembling the entire pressure plate 210 or clamping plate. The two ends of the clamping member 230 are respectively located on the process tables of the two workpieces to be processed on the same side. Through the action of the clamping member 230, the clamping and fixing operation of two workpieces to be processed can be achieved simultaneously. The fastener 230 can clamp and fix two workpieces to be processed, which is convenient for the machining center to perform milling or drilling and tapping operations on the workpieces. On the axis of the process hole of the other two workpieces to be processed on another horizontal plane, fasteners 240 are respectively provided for clamping and fixing the workpieces. The fasteners 240 can lock and fix the other two workpieces. This utility model can clamp and fix four workpieces to be processed at one time by setting clamping components 200 at the upper and lower ends of the worktable 101 of the four-axis rotary table 100. With the function of the four-axis rotary table 100, the workpieces on the worktable 101 can be processed in a high-efficiency and fast manner through multiple processes, which greatly improves the processing efficiency and reduces unnecessary equipment costs.

[0021] The pressure plate 210 and the clamping component 230 can also be fixed by means of a hydraulic cylinder or a rotary cylinder. This design may increase the cost, but it will greatly reduce the clamping time and improve the processing efficiency.

[0022] According to one embodiment of the present invention, such as Fig. 1 and Fig. 2 As shown, each pressure plate 210 has a threaded rod 211 on its axis. The pressure plate 210 has an adjustment groove 212 that matches the threaded rod 211. The threaded rod 211 is inserted into the adjustment groove 212. Each pressure plate 210 also has a telescopic sleeve 250 on its outer side. The telescopic sleeve 250 includes a fixed cylinder on the worktable 101. A spring is installed inside the fixed cylinder. A fixed rod is installed on the upper part of the spring. The upper part of the fixed rod is fixed to the pressure plate 210. The output rod of the telescopic sleeve 250 is fixed to the pressure plate 210. Each threaded rod 211 has a locking nut threadedly connected to its upper part. This invention can press the pressure plate 210 downwards to fix the product to be processed by tightening the locking nut. At the same time, the telescopic sleeve 250 provides a firm and stable auxiliary support for the pressure plate 210.

[0023] According to another embodiment of the present invention, such as Fig. 1 and Fig. 3 As shown, the fixing member 220 is a fixing screw, the clamping plate is sleeved on the outside of the fixing screw, and the upper part of the fixing screw is threaded with a fixing nut. This utility model can achieve the simultaneous clamping and fixing of two workpieces on the same horizontal plane by the action of the clamping plate, the fixing nut and the fixing screw, making the operation more convenient.

[0024] Fastener 240 is a clamping screw 221. A threaded hole is provided on the worktable 101 and on the axis of the clamping screw 221. The clamping screw 221 is threaded into the threaded hole. The clamping member 230 is sleeved on the outside of the clamping screw 221. A clamping nut is threaded on the outside of the clamping screw 221 and on the outside of the clamping member 230. This utility model can clamp and fix the workpiece on the axis of the clamping screw 221 by using the clamping nut in conjunction with the clamping member 230 and the clamping screw 221, which greatly improves the stability of clamping and fixing the workpiece.

[0025] The workbench 101 is also equipped with a positioning seat 260, and a limiting screw 270 for pressing the workpiece is threaded onto the positioning seat 260. This utility model can tighten the limiting screw 270 to fix the side wall of the workpiece, thus avoiding excessive vibration caused by the lack of limiting and tightening operation on the side wall of the workpiece during the processing, which would affect the processing quality of the product.

[0026] The worktable 101 on the same side as the fastener 240 is provided with a positioning pin that matches the positioning hole of the workpiece to be processed. This utility model can realize the rapid positioning operation of the workpiece to be processed through the positioning pin, which facilitates the precise fixing of its position and ensures the accuracy of the processing dimensions.

[0027] How to use this utility model:

[0028] First, it needs to be clarified that the fixture involved in this utility model is mainly used for clamping and fixing the parts to be processed. It is used in conjunction with the four-axis rotary table 100 and the machining center. The machining center can be a Makino model. The base of the four-axis rotary table 100 is fixedly connected to the working platform of the machining center through a T-slider, screw, and nut. This utility model will describe its usage in detail using the processing of the rear steering knuckle as an example. When the rear steering knuckle needs to be processed, the operator first places the rear steering knuckle blank to be processed in the positioning pin on the worktable 101, then places the pressure plate 210 and the clamping part 230 on the corresponding process table of the rear steering knuckle in sequence, and then tightens the locking nut and fixing part in sequence. The nut, clamping plate, and clamping element 230 clamp and fix the rear steering knuckle. Then, tighten the limiting screws 270 to clamp and fix the side wall of the workpiece. Then, start the four-axis rotary table 100 to rotate the worktable 101 180 degrees. Then, fix the other two rear steering knuckle blanks in the positioning pins in sequence. With the clamping nut tightened, the clamping element 230 is used to clamp and fix the other two rear steering knuckle blanks. Then, the machining center can be started to perform corresponding machining operations on the clamped and fixed rear steering knuckles. This utility model can use a multi-station fixture in conjunction with the four-axis rotary table 100 to fix and process four workpieces at the same time, reducing unnecessary equipment cost investment and greatly improving production efficiency.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A fixture for machining a rear steering knuckle, the fixture being mounted on a four-axis rotary table (100), characterized in that: The fixture includes clamping assemblies (200) respectively disposed at the upper and lower ends of the worktable (101) of the four-axis rotary table (100). The clamping assembly (200) includes multiple pressure plates (210) disposed on the upper part of the worktable (101). The multiple pressure plates (210) cooperate with the process table of the workpiece to be processed. A fixing member (220) is disposed between two workpieces to be processed located on the same horizontal plane. A clamping member (230) is disposed on the fixing member (220). The two ends of the clamping member (230) are respectively located on the process table of two workpieces to be processed located on the same side. Fasteners (240) for clamping and fixing the workpieces are respectively disposed on the axis of the process holes of two other workpieces to be processed located on another horizontal plane.

2. The fixture for machining the rear steering knuckle as described in claim 1, characterized in that: Each of the pressure plates (210) is provided with a threaded rod (211) on its axis. The pressure plate (210) is provided with an adjustment groove (212) that is adapted to the threaded rod (211). The threaded rod (211) is inserted into the adjustment groove (212). Each of the pressure plates (210) is also provided with a telescopic sleeve rod (250) on its outer side. The output rod of the telescopic sleeve rod (250) is fixed together with the pressure plate (210). Each of the threaded rods (211) is threaded with a locking nut at its upper part.

3. The fixture for machining the rear steering knuckle as described in claim 2, characterized in that: The fixing member (220) is a fixing screw, the clamping member (230) is a clamping plate, the clamping plate is sleeved on the outside of the fixing screw, and the upper part of the fixing screw is threaded with a fixing nut.

4. The fixture for machining the rear steering knuckle as described in claim 1, characterized in that: The fastener (240) is a clamping screw (221). A threaded hole is provided on the worktable (101) and on the axis of the clamping screw (221). The clamping screw (221) is threaded into the threaded hole. The clamping member (230) is sleeved on the outside of the clamping screw (221). A clamping nut is threaded on the outside of the clamping screw (221) and on the outside of the clamping member (230).

5. The fixture for machining the rear steering knuckle as described in claim 1, characterized in that: The worktable (101) is also provided with a positioning seat (260), and the positioning seat (260) is threadedly connected with a limiting screw (270) for pressing the workpiece.

6. The fixture for machining the rear steering knuckle as described in claim 4, characterized in that: A positioning pin that matches the positioning hole of the workpiece is provided on the worktable (101) on the same side as the fastener (240).

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