CN204976130U - Turning attachment of turning engine connecting rod - Google Patents

Abstract

The utility model relates to a lathe clamp for turning an engine connecting rod, which comprises a clamp body, a large-end positioning pin, a small-end positioning pin, a connecting rod, a nut, and a pressure plate. A cylinder is arranged on a connecting plate at one end of the clamp body, and a There is a center hole, a plane is processed in the middle, and two notches are vertically arranged on the plane; the positioning pin of the head and the positioning pin of the small head are respectively installed in the corresponding notches on the clamp body through screws; the connecting rod is installed on the positioning pin of the large end And on the small head positioning pin, the nut cooperates with the thread on the big head positioning pin, and the nut is tightened to fix the connecting rod on the clamp body through the pressure plate. When the main shaft of the machine tool rotates, the jaws on the lathe drive the clamp body to rotate, and the original turning tool on the machine tool can cut the connecting rod installed on the clamp body. The utility model has the advantages of reasonable structure, simple manufacture, time-saving operation and high processing efficiency, and is an ideal lathe clamp for turning engine connecting rods.

Description

A lathe fixture for turning engine connecting rod

technical field

The utility model relates to a lathe clamp, in particular to a lathe clamp for turning an engine connecting rod.

Background technique

We know that the engine connecting rod is an important part in the engine. Its structure is various. Some require the two sides of the big head hole to be circular arc surface structure. Tool processing, its investment cost and processing cost are higher. So far, there is no special lathe fixture for turning engine connecting rods on the market.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a lathe fixture for turning engine connecting rods with reasonable structure, simple manufacture, time-saving operation and high processing efficiency.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a lathe clamp for turning the engine connecting rod, which includes a clamp body, a large-end positioning pin, a small-end positioning pin, a connecting rod, a nut, and a pressure plate, and is characterized in that: There is a cylinder on the connecting plate at one end of the clamp body, and a central hole at the other end. There is a plane in the middle, and two concave grooves are vertically arranged on the plane; the jaws on the lathe clamp the cylinder on the clamp body, and the top Tighten the central hole on the clamp body; the big head locating pin and the small head locating pin are respectively installed in the corresponding notches on the clamp body by screws; the connecting rod is installed on the big head locating pin and the small end locating pin, and the nut The threads on the big head positioning pin cooperate, and the nut is tightened to fix the connecting rod on the clamp body through the pressure plate. When the main shaft of the machine tool rotates, the claws on the lathe drive the clamp body to rotate, and the original turning tool on the machine tool can cut the connecting rod installed on the clamp body.

A counterweight is installed on the connecting plate of the clamp body through screws.

The plane on the clamp body is parallel to the centerline of the clamped connecting rod and lower than its centerline, and the center distance between the two notches is the same as the center distance between the big head hole and the small head hole of the connecting rod; Machined with threaded holes.

The lower end of the big head positioning pin has a convex stop, the diameter of the middle part is the same as the hole diameter of the big head hole of the connecting rod, and the upper end is processed with a thread matched with the nut, and the connecting rod is compressed by the pressure plate.

The diameter of the upper end of the small head positioning pin is the same as that of the small head hole of the connecting rod, and the lower end has a convex stop.

The utility model adopts the above-mentioned composition structure, and a fixed connecting rod is installed on the clamp body. The claws on the lathe drive the clamp body to rotate, and the original turning tool on the machine tool can realize the cutting process on both sides of the big end hole of the connecting rod. Compared with the prior art, the utility model has the advantages of reasonable structure, simple manufacture, time-saving operation and high processing efficiency, and is an ideal lathe fixture for turning engine connecting rods.

Description of drawings

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

Fig. 1 is a schematic structural view of the utility model in an assembled state.

Fig. 2 is a schematic diagram of the structure along the direction B in Fig. 1 .

Fig. 3 is a schematic diagram of the structure along the direction A-A in Fig. 2 .

In the figure 1. Claw, 2. Counterweight, 3. Screw, 4. Screw, 5. Small head positioning pin, 6. Clamp body, 7. Connecting rod, 8. Screw, 9. Big head positioning pin, 10. Nut, 11. pressing plate, 12. top, 13. turning tool.

detailed description

It can be seen from Fig. 1, Fig. 2 and Fig. 3 that a lathe fixture for turning an engine connecting rod includes a jaw 1, a counterweight 2, a small head positioning pin 5, a clamp body 6, a connecting rod 7, and a large head Locating pin 9, nut 10, pressing plate 11, top 12, turning tool 13 etc. The connecting plate at one end of the clamp body 6 is provided with a cylinder, and the other end is provided with a central hole, and a plane is processed in the middle, and there are two notches and several threaded holes perpendicular to the plane. The claw 1 on the lathe clamps the cylinder on the clamp body 6, and the top 12 clamps the center hole on the clamp body 6; Concretely in the corresponding notch on the 6; connecting rod 7 is installed on the big head locating pin 9 and the small head locating pin 5, and the screw thread on the nut 10 is matched with the big head locating pin 9, and the nut 10 is tightened to connect the connecting rod 7 by the pressing plate 11. Fixed on the clamp body 6. When the main shaft of the machine tool rotates, the claw 1 on the lathe drives the clamp body 6 to rotate, and the original turning tool 13 on the machine tool can cut the connecting rod 7 installed on the clamp body.

Further, a counterweight 2 is installed on the connecting plate of the clamp body 6 through screws 3 .

Further, the plane on the clamp body 6 is parallel to the centerline of the clamped connecting rod and lower than its centerline, and the center distance between the two concave notches is the same as the center distance between the big end hole and the small end hole of the connecting rod; Threaded holes are machined around the notch. It is convenient to install the large-end positioning pin 9 and the small-end positioning pin 5 for positioning the connecting rod 7 .

Further, the lower end of the big head positioning pin 9 has a convex stop, the diameter of the middle part of the big head positioning pin 9 is the same as the hole diameter of the big head hole of the connecting rod, the upper end of the big head positioning pin 9 is processed with a thread that matches the nut 10, and the connecting rod 7 is connected through the pressure plate 11. Make a compaction.

Further, the diameter of the upper end of the small head positioning pin 5 is the same as that of the small head hole of the connecting rod, and the lower end has a convex stop.

The utility model adopts the above-mentioned composition structure, and a fixed connecting rod is installed on the clamp body. The claws on the lathe drive the clamp body to rotate, and the original turning tool on the machine tool can realize the cutting process on both sides of the big end hole of the connecting rod. The utility model has the advantages of reasonable structure, simple manufacture, time-saving operation and high processing efficiency, and is an ideal lathe fixture for turning engine connecting rods.

Claims (5)

1. A lathe fixture for turning an engine connecting rod, which comprises a clamp body, a large-end locating pin, a small-end locating pin, a connecting rod, a nut, and a pressing plate, and is characterized in that: a connecting plate at one end of the clamp body is provided with a cylinder, The other end is provided with a central hole, and a plane is processed in the middle, and two notches are vertically provided on the plane; the claws on the lathe clamp the cylinder on the clamp body, and the top pinches the center hole on the clamp body; the big head The locating pin and the small-end locating pin are respectively installed in the corresponding notches on the clamp body through screws; The pressure plate fixes the connecting rod on the clamp body. 2 . The lathe fixture for turning engine connecting rods according to claim 1 , wherein a counterweight is mounted on the connecting plate of the fixture body through screws. 3 . 3. The lathe clamp for turning engine connecting rod according to claim 1, characterized in that: the plane on the clamp body is parallel to the centerline of the clamped connecting rod and lower than the centerline of the clamped connecting rod. The center distance of the mouth is the same as the center distance of the big head hole and the small head hole of the connecting rod; threaded holes are processed around the concave stop. 4. The lathe fixture for turning engine connecting rod according to claim 1, characterized in that: the lower end of the big head positioning pin has a convex stop, the diameter of the middle part is the same as the hole diameter of the big head hole of the connecting rod, and the upper end is processed with a nut to cooperate with The thread is used to compress the connecting rod through the pressure plate. 5. The lathe clamp for turning engine connecting rod according to claim 1, characterized in that: the diameter of the upper end of the small head positioning pin is the same as the diameter of the small head hole of the connecting rod, and the lower end has a convex stop.