CN204381908U - A kind of exhaust manifold milling large fixture - Google Patents

Abstract

The utility model relates to a fixture for milling a large surface of an exhaust manifold, which comprises a bottom plate of a clamp body, a side plate of the clamp body is fixedly installed on the rear part of the upper end of the bottom plate of the clamp body, and a clamping device No. 1 and a clamping device No. 2 are arranged above the bottom plate of the clamp body and No. 3 clamping device. The No. 1 clamping device, the No. 2 clamping device and the No. 3 clamping device all include a support rod, the upper end of the support rod is connected with a pressure plate, the pressure plate is connected with a double-ended screw, and the upper part of the double-ended screw is connected with a compression nut. The concrete bottom plate is provided with a push rod, and the first flattened positioning head is welded at the upper right corner of the front end surface of the side plate of the clamp body. A baffle is connected to the upper left part of the front end of the side plate of the clamp body, and a second flattening positioning head is arranged on the right of the baffle. A first arc-shaped groove and a second arc-shaped groove are arranged at the upper center of the front side of the side plate of the clamp body, and an auxiliary locator is arranged directly behind the second arc-shaped groove. The utility model performs positioning through the convenient adjustability of the position of the pressing plate and the way of three-side limit, and the positioning is firm and reliable.

Description

A jig for milling a large surface of an exhaust manifold

technical field

The utility model relates to a tooling for processing auto parts, in particular to a fixture for milling a large surface of an exhaust manifold.

Background technique

The exhaust manifold is connected to the cylinder block of the engine, and the exhaust of each cylinder is collected and introduced into the exhaust manifold, with divergent pipelines. When the exhaust manifold is processed, because the pipe wall of the exhaust manifold is composed of curved surfaces, it is difficult to position it accurately with general tooling fixtures, resulting in low processing quality and higher efficiency of many exhaust manifolds. for low.

Aiming at this defect, Chinese Patent Publication No. CN102398181A discloses a large surface clamp for exhaust manifold milling. A support rod is fixedly installed on the clamp plate on one side of the connecting rod, and the upper end of the supporting rod and the connecting rod They are respectively hinged at the middle section and the end of the pressure plate, and the pressure plate can swing with the hinge point of the support rod as the fulcrum driven by the connecting rod. However, this fixture positioning method is relatively rough. In addition, this clamping method uses pneumatically driven levers to swing to achieve compaction, and the cost is relatively high.

The Chinese patent publication number is CN202507094U, which discloses a fixture for milling inlet and exhaust ports. It is characterized in that a return spring is placed under the pressure plate. The return spring makes the pressure plate in a suspended state after the workpiece is removed, which is convenient for new workpieces. In addition, this kind of fixture has simple structure and low cost, but the disadvantage of this kind of fixture is also obvious. Due to the fixed connection method between the two positioning pins and the base, the scope of application of this kind of fixture is too narrow.

Contents of the invention

Aiming at the defects in the above-mentioned technologies, the utility model proposes a large surface milling fixture for exhaust manifolds that can improve the comprehensiveness of positioning and the range of applicability.

A fixture for milling a large surface of an exhaust manifold, comprising a bottom plate of a clamp body, a side plate of the clamp body is fixedly installed on the rear part of the upper end of the bottom plate of the clamp body, and the top of the bottom plate of the clamp body is arranged sequentially from left to right with the same structure. Clamping device No. 1, Clamping device No. 2 and Clamping device No. 3.

The No. 1 clamping device, the No. 2 clamping device and the No. 3 clamping device all include a support rod, and the upper ends of the support rods are all connected with a pressure plate through threads, and the center of the pressure plate is connected with a double-ended screw rod. The upper part of the double-ended screw is connected with a compression nut, and it is characterized in that: the connection mode between the pressure plate and the double-ended screw is a sliding connection, the outer circumference of the double-ended screw is surrounded by a spring, and the pressure plate is It is equipped with a waist-shaped chute that slides with the double-ended screw.

The lower end of the double-ended screw rod and the lower end of the spring on the No. 2 clamping device are all connected to the bottom plate of the clamp body, and the rear end of the double-ended screw rod and the spring rear end on the No. Both the rear end of the head screw and the rear end of the spring are connected to the side plate of the clamp body.

A push rod corresponding to the position of the pressure plate on the No. 2 clamping device is provided on the bottom plate of the clamp body, and a first flattened positioning head is welded at the upper right corner of the front end of the side plate of the clamp body.

The upper left part of the front end surface of the side plate of the clamp body is horizontally connected with a baffle through threads, and the baffle is in an L-shaped structure. The head is welded on the front face of the side plate of the clamp body.

Among the above-mentioned three clamping devices No. 1, No. 2 and No. 3, they not only have the function of returning by spring in the traditional technology, but also have the unique feature that the pressure can be adjusted by sliding the pressure plate. The plate is pressed against the specific position on the exhaust manifold, so that different types of exhaust manifolds can be pressed. However, in the traditional technology, since the spring and the pressing plate are fixedly connected together, the moving of the pressing plate is inconvenient and the adjustability is poor.

A first arc-shaped groove and a second arc-shaped groove are arranged in sequence from right to left at the center position of the upper part of the front side of the side plate of the clamp body, and an auxiliary locator is arranged directly behind the second arc-shaped groove. The auxiliary locator is horizontally connected with the side plate of the clamp body through screw fit, the front end of the auxiliary locator passes through the side plate of the clamp body, and the front end of the auxiliary locator is located in the second arc-shaped groove. The first arc-shaped groove and the second arc-shaped groove adopt profiling design, on the one hand to ensure that the installation and positioning of the exhaust manifold will not be hindered, on the other hand, the first arc-shaped groove and the second arc-shaped groove can be used to achieve alignment Auxiliary positioning of the exhaust manifold. The auxiliary locator is used in conjunction with the first arc-shaped groove and the second arc-shaped groove, so that when the exhaust manifold is placed in the first arc-shaped groove and the second arc-shaped groove, the front end of the auxiliary locator will push against the exhaust gas. On the manifold, the loosening of the exhaust manifold is effectively prevented, and the positioning is more firm and reliable.

The auxiliary locator has a T-shaped structure, which is convenient for the operator to rotate manually.

The ejector rod provides the lower limit for the exhaust manifold, the baffle realizes the left positioning of the exhaust manifold, and the side plate of the clamp body serves as the basis for the overall support and positioning.

The beneficial effects of the utility model are: the utility model is positioned through the convenient adjustability of the position of the pressure plate and the three-sided limit method, which not only has the characteristics of simple structure and convenient use of the traditional technology, but also can further improve the safety of the large surface of the exhaust manifold. Machining accuracy, firm and reliable positioning. In addition, the positioning and clamping method of the utility model can be applied to large-face milling of exhaust manifolds of various sizes and models, and has a wide range of applications.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the main view structure schematic diagram of the utility model;

Fig. 2 is the top view structural representation of the utility model;

Fig. 3 is a schematic diagram of the working state of Fig. 1 for the utility model;

Fig. 4 is a schematic diagram of the working state of the utility model with respect to Fig. 2 .

Detailed ways

In order to make the technical means realized by the utility model, creation feature, purpose and effect easy to be understood, the utility model is further elaborated below.

As shown in Figures 1 to 4, a fixture for milling a large surface of an exhaust manifold includes a clamp body bottom plate 1, a clamp body side plate 2 is fixedly installed on the upper rear of the clamp body bottom plate 1, and the clamp body bottom plate 1 The No. 1 clamping device 5 , the No. 2 clamping device 3 and the No. 3 clamping device 4 with the same structure are arranged sequentially from left to right above.

The No. 1 clamping device 5, the No. 2 clamping device 3 and the No. 3 clamping device 4 all include a support rod 301, and the upper ends of the support rod 301 are all connected with a pressure plate 302 by threads, and the center positions of the pressure plate 302 are all connected. There is a double-ended screw 303, and the upper part of the double-ended screw 303 is connected with a compression nut 304. It is characterized in that: the connection mode between the pressure plate 302 and the double-ended screw 303 is a sliding connection, and the circumference of the double-ended screw 303 The outer ends are surrounded by springs 305 , and the pressure plates 302 are provided with waist-shaped sliding grooves 302 a that slide with the double-ended screws 303 .

The lower end of the double-ended screw rod 303 on the No. 2 clamping device 3 and the lower end of the spring 305 are all connected to the bottom plate 1 of the clamp body, and the rear end of the double-ended screw rod 303 on the No. The rear end of the double-ended screw rod 303 and the rear end of the spring 305 on the clamping device 4 are all connected to the side plate 2 of the clamp body.

The bottom plate 1 of the clamp body is provided with a push rod 6 corresponding to the position of the pressure plate 302 on the No. 2 clamping device 3, and the first flattened positioning head is welded at the upper right corner of the front end of the side plate 2 of the clamp body 7.

The upper left part of the front end surface of the clamp body side plate 2 is horizontally connected with a baffle plate 8 by threads, the baffle plate 8 is in an L-shaped structure, and the right side of the baffle plate 8 is provided with a second flattened positioning head 10, the The second flattening positioning head 10 is welded on the front end surface of the clamp body side plate 2, and the upper end faces of the first flattening positioning head 7 and the second flattening positioning head 10 are planes, so that the exhaust manifold is placed on the first The flattening positioning head 7 and the second flattening positioning head 10 can utilize the upper end plane of the flattening positioning head 7 and the second flattening positioning head 10 to realize the support and positioning of the exhaust manifold, and also help to ensure that the exhaust manifold The horizontality of the pipe placement ensures the processing accuracy of large face milling.

Among the above-mentioned three clamping devices No. 1 clamping device 5, No. 2 clamping device 3 and No. 3 clamping device 4, they not only have the function of returning by spring in the traditional technology, but also have the unique feature that they can slide through the pressing plate 302 , the adjustable pressing plate 302 is pressed against a specific position on the exhaust manifold, so that different types of exhaust manifolds can be pressed. However, in the traditional technology, since the spring and the pressing plate are fixedly connected together, the moving of the pressing plate is inconvenient and the adjustability is poor.

A first arc-shaped groove 2a and a second arc-shaped groove 2b are arranged in the center position of the upper part of the front side of the clamp body side plate 2 in sequence from right to left, and directly behind the second arc-shaped groove 2b is a Auxiliary locator 9, said auxiliary locator 9 is horizontally connected with clamp body side plate 2 by means of screw fit, the front end of said auxiliary locator 9 runs through clamp body side plate 2, and the front end of said auxiliary locator 9 is located at the first Inside the two arc-shaped grooves 2b. The first arc-shaped groove 2a and the second arc-shaped groove 2b adopt profiling design. On the one hand, it can ensure that the installation and positioning of the exhaust manifold will not be hindered. The groove 2b realizes auxiliary positioning of the exhaust manifold. The auxiliary locator 9 is used in conjunction with the first arc-shaped groove 2a and the second arc-shaped groove 2b, so that when the exhaust manifold is placed in the first arc-shaped groove 2a and the second arc-shaped groove 2b, the auxiliary locator The front end of the 9 is pushed against the exhaust manifold, which effectively prevents the loosening of the exhaust manifold, and the positioning is more firm and reliable.

The auxiliary locator 9 has a T-shaped structure, which is convenient for the operator to manually rotate. The auxiliary locator 9 can prevent the exhaust manifold from shaking back and forth during milling, ensuring the safety and stability of the process.

The ejector rod 6 provides a lower limit for the exhaust manifold, the baffle plate 8 realizes the left positioning of the exhaust manifold, and the clamp body side plate 2 serves as the basis for overall support and positioning.

When in use, after the exhaust manifold is positioned, it is pressed longitudinally by the No. 2 clamping device 3, and pressed backward by the No. 1 clamping device 5 and the No. 3 clamping device 4. The specific operation methods are knob pressing. Tighten the nut 304, and push the pressing plate 302 to press the exhaust manifold tightly.

Finally, the auxiliary positioner 9 is rotated again to completely tighten the exhaust manifold, which can further improve the machining accuracy.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model There will also be various changes and improvements, and these changes and improvements all fall within the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. A large-face clamp for exhaust manifold milling, comprising a clamp body base plate (1), the clamp body side plate (2) is fixedly installed on the upper rear portion of the clamp body base plate (1), and the clamp body base plate (1) ) are arranged in sequence from left to right above the No. 1 clamping device (5), No. 2 clamping device (3) and No. 3 clamping device (4) with the same structure; The No. 1 clamping device (5), the No. 2 clamping device (3) and the No. 3 clamping device (4) all include a support rod (301), and the upper ends of the support rod (301) are all threadedly connected with a pressure plate (302), the central position of the pressing plate (302) is connected with a double-ended screw (303), and the upper part of the double-ended screw (303) is connected with a compression nut (304), it is characterized in that: the pressing plate (302 ) and the double-ended screw rod (303) are connected by a sliding connection, and the outer circumferential ends of the double-ended screw rod (303) are all surrounded by springs (305), and the pressure plate (302) is provided with a double-ended screw rod (302). The waist type chute (302a) that screw rod (303) slides fit; The lower end of the double-ended screw (303) on the No. 2 clamping device (3) and the lower end of the spring (305) are connected to the bottom plate (1) of the clamp body, and the double-ended screw on the No. 1 clamping device (5) (303) rear end, spring (305) rear end and the double-ended screw rod (303) rear end on the No. 3 clamping device (4), spring (305) rear end are all connected with clamp body side plate (2); The bottom plate (1) of the clamp body is provided with a push rod (6) corresponding to the position of the pressure plate (302) on the No. 2 clamping device (3), and the upper right side of the front end of the side plate (2) A first flattened positioning head (7) is welded at the corner; The upper left part of the front end of the clamp body side plate (2) is horizontally connected with a baffle (8) through threads, the baffle (8) is in an L-shaped structure, and the right side of the baffle (8) is provided with a second The flattened positioning head (10), the second flattened positioning head (10) is welded on the front end surface of the clamp body side plate (2); A first arc-shaped groove (2a) and a second arc-shaped groove (2b) are arranged in the center position of the upper part of the front side of the clamp body side plate (2) in sequence from right to left, and the second arc-shaped groove An auxiliary locator (9) is provided directly behind (2b), and the auxiliary locator (9) is horizontally connected with the side plate (2) of the clamp body through a threaded fit, and the front end of the auxiliary locator (9) runs through For the clamp body side plate (2), the front end of the auxiliary locator (9) is located in the second arc-shaped groove (2b). 2. A fixture for milling a large surface of an exhaust manifold according to claim 1, characterized in that: the auxiliary positioner (9) has a T-shaped structure.