一种发动机气门摇臂三面加工工装

Abstract

本申请涉及一种发动机气门摇臂三面加工工装，其包括固定在加工中心A轴夹具上的油路板，所述油路板上设置有用于对中心孔进行定位的中心定位组件，所述油路板上靠近加工孔一的一侧设置有对发动机气门摇臂进行水平定位的水平定位组件，所述油路板上靠近加工孔二的一侧设置有对发动机气门摇臂进行竖直定位的竖直定位组件，所述油路板内侧成型有油路与加工中心的液压油路连通，所述中心定位组件、水平定位组件和竖直定位组件均由加工中心的液压油驱动。本申请可以实现装夹后一次性完成多面铣削和钻孔工序，从而提升加工效率并保证加工产品一致性。

Claims

1. An engine valve rocker arm three-face machining tooling, characterized in that: The system includes an oil circuit board (1) fixed on the A-axis fixture of the machining center. The oil circuit board (1) is provided with a center positioning component (2) for positioning the center hole (200). The oil circuit board (1) is provided with a horizontal positioning component for horizontal positioning of the engine valve rocker arm on the side near the first machining hole (300). The oil circuit board (1) is provided with a vertical positioning component (5) for vertical positioning of the engine valve rocker arm on the side near the second machining hole (400). The oil circuit board (1) has an oil circuit formed on its inner side that is connected to the hydraulic oil circuit of the machining center. The center positioning component (2), the horizontal positioning component and the vertical positioning component (5) are all driven by the hydraulic oil of the machining center.

2. The engine valve rocker arm three-face machining tooling apparatus of claim 1, wherein: The center positioning component (2) includes a support base (21), which is detachably fixed on the oil circuit plate (1). The upper end face of the support base (21) abuts against the support surface (220). The inner side of the support base (21) is also provided with an expansion sleeve mechanism for coaxial positioning of the center hole (200).

3. The engine valve rocker arm three-face machining tooling of claim 2, wherein: The expansion sleeve mechanism includes a mounting base (22), in which a central column (23) is provided coaxially with the central hole (200). The central column (23) slides and engages with the oil circuit board (1) in the vertical direction. A central drive mechanism for hydraulically driving the central column (23) to move is provided on the mounting base (22). An arc block (25) is also provided in the mounting base (22). Multiple arc blocks (25) are arranged around the upper side of the central column (23). A first conical surface (231) is also formed on the upper side of the central column (23). The first conical surface (231) is tapered from bottom to top. The first conical surface (231) abuts against the inner side of any arc block (25).

4. The three-sided machining fixture for an engine valve rocker arm according to claim 1, characterized in that: The horizontal positioning assembly includes a front positioning mechanism (4) and a rear positioning mechanism disposed on both sides of the width direction of the oil circuit plate (1). The rear positioning mechanism includes a fixed seat (3). An abutment block (31) is detachably fixed on the fixed seat (3). A tool relief groove (311) is formed on the abutment block (311). The tool relief groove (311) is arc-shaped. The tool relief groove (311) is coaxially disposed with the first machining hole (300). The abutment block (31) is located on the side of the first machining hole (300) close to the center hole (200) along the length direction of the engine valve rocker arm. The end face of the abutment block (31) close to the engine valve rocker arm abuts against the side face of the first machining hole (300) away from the second machining surface (310).

5. The engine valve rocker arm three-face machining tooling of claim 4, wherein: The front positioning mechanism (4) includes a telescopic rod (41). The oil circuit plate (1) is provided with a telescopic drive mechanism that hydraulically drives the telescopic rod (41) to slide in the vertical direction. An L-shaped block (42) is provided on the telescopic rod (41). One end of the L-shaped block (42) is hinged to the upper end of the telescopic rod (41). A support frame (43) is also fixed on the oil circuit plate (1). The middle part of the L-shaped block (42) is hinged to the support frame (43). The side of the L-shaped block (42) near the engine valve rocker arm abuts against the side of the engine valve rocker arm that is parallel to the axis of the center hole (200).

6. The engine valve rocker arm three-face machining tooling of claim 1, wherein: The vertical positioning component (5) includes a pressing positioning mechanism (6) and a supporting positioning mechanism. The supporting positioning mechanism includes a supporting column (51). The oil circuit plate (1) is provided with a hydraulically driven supporting column (51) that slides vertically. The upper end of the supporting column (51) is detachably fixed with a supporting block (52). The supporting block (52) abuts against the lower side of the side rib of the engine valve rocker arm near the machining hole 2 (400).

7. The engine valve rocker arm three-face machining tooling of claim 6, wherein: The pressing positioning mechanism (6) includes a fixed block (61), a positioning column (62) is provided on the fixed block (61), a positioning drive mechanism for hydraulically driving the positioning column (62) to slide in the vertical direction is provided in the oil circuit plate (1), a pressing rod (63) is also provided on the positioning column (62), the end of the pressing rod (63) away from the engine valve rocker arm is hinged to the upper end of the positioning column (62), a connecting rod (64) is also provided on the fixed block (61), the lower end of the connecting rod (64) is hinged to the fixed block (61), the upper end of the connecting rod (64) is hinged to the middle of the pressing rod (63), and the lower side of the pressing rod (63) near the engine valve rocker arm abuts against the upper side of the side rib of the engine valve rocker arm near the machining hole two (400).

8. The engine valve rocker arm three-face machining tooling of claim 7, wherein: The pressure rod (63) is also provided with a clearance groove (631) for avoiding the outer wall structure of the machining hole two (400).

9. A three-sided machining fixture for an engine valve rocker arm according to claim 4, characterized in that: The fixed seat (3) is also provided with a clamping block (32). The clamping block (32) is detachably fixed to the fixed seat (3). The clamping block (32) is pressed against the rear side of the engine valve rocker arm near the machining hole two (400) on the side rib of the engine valve rocker arm.

10. The three-face machining tooling for engine valve rocker arms of claim 4, wherein: The mounting base (3) is also provided with a cooling nozzle (33), which is located on the side close to the abutment block (31).

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