CN102218570A - Coring device for large shaft - Google Patents

Abstract

The invention relates to a large-scale shaft coring device. A longitudinal groove (10) and a transverse groove (11) are arranged on the outer circle of a tubular cutter bar (1), and a lever (5) is arranged on the tubular cutter bar through a pin shaft (6). (1) In the transverse groove (11) on the outer circle, the cam (4) is set in the longitudinal groove (10) at the left end of the tubular cutter bar (1), and the spring (3) is set between the pull rod (2) and the cam (4) Between, one end of lever (5) is provided with cutter (7), and the other end is arranged in the chute of cam (4), and the end of tubular cutter bar (1) is provided with three supports (8) along outer circle. The invention has a simple structure. When taking out the core of a large shaft, the core can be taken out from the middle without drilling the large shaft, which reduces the processing depth of the casing drill, reduces the processing difficulty, saves processing time, and reduces The damage to the core shaft to be taken is avoided, and the work efficiency is improved.

Description

Large Shaft Coring Unit

technical field

The invention belongs to mechanical processing devices, in particular to a large shaft coring device.

Background technique

When some large-scale shaft parts are manufactured, in order to ensure the material, some materials need to be taken from the center of the shaft for testing. The method adopted in the market is to drill a through hole at the center of the shaft with a casing drill, take out the core left by the casing, and take materials in sections from one end to the middle of the core length for testing. Because the length of large-scale shaft parts is often 5-6 meters, or even more than 10 meters, in order to test the material from the center and reduce the processing difficulty of the trepanning drill, the hole diameter of the material has to be increased, which weakens the stiffness of the shaft to a certain extent. And the processing difficulty of deep hole is big, and time is long, and work efficiency is low.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above disadvantages and provide a large-scale shaft coring device, which solves the problem that large-scale shaft parts can take out the core from the middle part without drilling through, and reduces the size of the hole. Processing difficulty, shorten processing time, improve work efficiency.

The technical scheme of the present invention: a large-scale shaft coring device, which includes a tubular cutter bar, a pull rod, a spring, a cam, a lever, a pin shaft, a cutter and a support, and the outer circle of the tubular cutter bar is provided with a longitudinal groove and a transverse groove, The lever is set in the transverse groove on the outer circle of the tubular knife bar through the pin shaft, the cam is set in the longitudinal groove at the left end of the tubular knife bar, the spring is set between the pull rod and the cam, one end of the lever is set with a knife, and the other end is set on the cam In the chute, the end of the tubular cutter bar is provided with three supports along the outer circle.

The cam is cylindrical and has a chute on it.

Compared with the prior art, the present invention has the following beneficial effects: the present invention has a simple structure. When taking the core of a large shaft, the casing drill only needs to drill to the position where the material is to be taken, and the device of the present invention cuts off the core inside the shaft. Yes, it solves the problem that the core material can be taken out from the middle part without drilling through for large shaft parts, reduces the processing depth of the nesting drill, reduces the processing difficulty, saves processing time, and reduces the need for the core material to be removed. The damage of the mandrel improves the work efficiency.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view along the B-B section line in Fig. 1;

FIG. 3 is a partial enlarged top view of FIG. 1 .

Detailed ways

A large-scale shaft coring device, which includes a tubular cutter bar 1, a pull rod 2, a spring 3, a cam 4, a lever 5, a pin shaft 6, a cutter 7 and a support 8, and a longitudinal groove 10 is arranged on the outer circle of the tubular cutter bar 1 , the transverse groove 11, the lever 5 is arranged in the transverse groove 11 on the outer circle of the tubular knife bar 1 through the pin shaft 6, the cam 4 is arranged in the longitudinal groove 10 at the left end of the tubular knife bar 1, and the spring 3 is arranged on the pull bar 2 and the cam 4 Between, one end of the lever 5 is provided with a cutter 7, the other end is arranged in the inclined groove of the cam 4, and the end of the tubular cutter bar 1 is provided with three supports 8 along the outer circle. Described cam 4 is cylindrical, is provided with inclined groove on it.

When working, start the machine tool, the workpiece rotates, a pulling force moves the pull rod 2 to the right, and the cam 4 moves axially along the tubular pull rod 1 under the action of the pull rod 2 and the spring 3, thereby driving the lever 5 to rotate around the pin shaft 6, so that the The cutting edge of the cutter 7 on the lever 5 moves to the center of the tubular cutter bar 1, and the material core 9 can be cut off. Then release the force acting on the pull rod 2, then the pull rod 2 is pulled back to the left under the action of the spring 3, and the lever 5 is driven to reset, and the cutter 7 is also reset. At this time, the tubular knife rod 1 and the removed material core 9 can be together out of the hole in the large shaft.

Claims (2)

1. one kind big profile shaft coring device, it comprises tubulose knife bar (1), pull bar (2), spring (3), cam (4), lever (5), bearing pin (6), cutter (7) and support (8), the cylindrical that it is characterized in that tubulose knife bar (1) is provided with cannelure (10), transverse groove (11), lever (5) is arranged in the transverse groove (11) on tubulose knife bar (1) cylindrical by bearing pin (6), cam (4) is arranged in the cannelure (10) of tubulose knife bar (1) left end, spring (3) is arranged between pull bar (2) and the cam (4), one end of lever (5) is provided with cutter (7), the other end is arranged in the skewed slot of cam (4), and the end of tubulose knife bar (1) is provided with three supports (8) along cylindrical.

2. big profile shaft coring device according to claim 1 is characterized in that described cam (4) for cylindrical, and it is provided with skewed slot.

Images