CN219599838U - Novel woodworking drill - Google Patents

Abstract

The utility model discloses a novel woodworking drill, which comprises a shaft, wherein a drill bit is fixedly arranged at the bottommost end of the shaft, a large flywheel is fixedly arranged at the lower part of the shaft, two rotating mechanisms with the same structure are arranged on the shaft and are positioned above the large flywheel; the rotating mechanism comprises a force transmission disc, a small flywheel, a sleeve, a rope and a cross arm, wherein the force transmission disc is fixedly connected with the shaft, the small flywheel is sleeved outside the force transmission disc, the sleeve is sleeved outside the shaft, one end of the sleeve is fixedly connected with the small flywheel, the cross arm is sleeved outside the sleeve, and two ends of the cross arm are respectively connected with the upper part of the sleeve through the rope. The woodworking drill can continuously and unidirectionally rotate, and a twist drill bit is used for drilling metal materials. And no mains or battery is needed to provide power. Can be suitable for field operation far away from human smoke.

Description

Novel woodworking drill

Technical Field

The utility model relates to the technical field of processing tools, in particular to a novel woodworking drill.

Background

Currently, there are electric drills commonly used for drilling holes. However, electric drills require electric power, and in field operations away from human smoke, electric power may sometimes not be supplied, resulting in the inability to use electric drills. In this case, the carpenter's drill can be used, and the carpenter's drill in the prior art can be rotated in forward and reverse directions alternately during operation, so that the twist bit cannot be used, such as the simple carpenter's drill disclosed in application number 201711166106.9.

Disclosure of Invention

The utility model provides a novel woodworking drill, which aims to solve the problem that a woodworking drill rotates forward and backward alternately during working.

In order to achieve the aim, the technical scheme adopted by the utility model is that the novel woodworking drill comprises a shaft, wherein a drill bit is fixedly arranged at the bottommost end of the shaft, a large flywheel is fixedly arranged at the lower part of the shaft, and two rotating mechanisms with the same structure are arranged on the shaft and are positioned above the large flywheel;

the rotating mechanism comprises a force transmission disc, a small flywheel, a sleeve, a rope and a cross arm, wherein the force transmission disc is fixedly connected with the shaft, the small flywheel is sleeved outside the force transmission disc, the sleeve is sleeved outside the shaft, one end of the sleeve is fixedly connected with the small flywheel, the cross arm is sleeved outside the sleeve, and two ends of the cross arm are respectively connected with the upper part of the sleeve through the rope.

Further, the large flywheel is fixedly connected with the shaft through a pin II, and the force transmission disc is fixedly connected with the shaft through a pin.

Further, a thrust bearing is arranged between the two rotating mechanisms.

Further, the cross arms of the two rotating mechanisms are connected into a whole through the vertical rods.

Further, two inclined grooves are formed in the end face of the small flywheel respectively, pawls and springs are arranged in the grooves, the tail ends of the pawls are contacted with the tail ends of the grooves under the action of thrust of the springs, and the head ends of the pawls are contacted with the outer circle surface of the force transmission disc. The two inclined grooves are centrosymmetric.

More specifically, the utility model also comprises a cover plate, wherein the cover plate is arranged on the small flywheel and is fixed with the small flywheel through a screw.

The utility model overcomes the situation that the common woodworking drill rotates alternately in the forward and reverse directions when working and cannot use the twist drill. The carpenter's drill of the present utility model can rotate continuously and unidirectionally, so that a twist drill can be used to drill hard materials, such as metal, etc. And no mains or battery is needed to provide power. Can be suitable for field operation far away from human smoke.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged view of A-A;

FIG. 3 is an enlarged view in the K direction;

FIG. 4 is an enlarged view of B-B;

fig. 5 is an enlarged view of the portion E;

in the figure, the shaft 1, the force transmission disc 2, the cover plate 3, the small flywheel 4, the pin 5, the sleeve 6, the rope 7, the thrust bearing 8, the cross arm 9, the vertical rod 10, the small flywheel 11, the iron wire hoop 12, the sleeve 13, the large flywheel 14, the pin 15, the drill 16, the pawl 17, the spring 18, the screw 19, the rope 20 and the cross arm 21 are all shown.

Detailed Description

As shown in fig. 1-5, a novel woodworking drill comprises a shaft 1, wherein a solid shaft can be selected as the shaft. The drill 16 is fixedly arranged at the extreme end of the shaft 1, the large flywheel 14 is fixedly arranged at the lower part of the shaft 1 (the shaft is connected with the solid shaft into a whole by the pin II 15), and two rotating mechanisms (an upper rotating mechanism and a lower rotating mechanism) with the same structure are arranged on the shaft 1 and are positioned above the large flywheel 14.

The upper rotating mechanism comprises a small flywheel I4, a pin I5, a sleeve I6, a rope I7 and a cross arm I9 (shown in figure 4), wherein the force transmission disc 2 is fixedly connected with the shaft 1 through the pin I5, the small flywheel I4 is sleeved outside the force transmission disc 2, the sleeve I6 is sleeved outside the shaft 1, one end of the sleeve I6 is fixedly connected with the small flywheel I4 (can be welded into a whole), the cross arm I9 is sleeved outside the sleeve I6, and the left end and the right end of the cross arm I9 are respectively connected with the upper part of the sleeve I6 through the rope I7. The rope I7 can be fixed on the upper part of the sleeve I6 by using a wire hoop 12.

The lower rotating mechanism comprises a small flywheel II 11, a sleeve II 13, a rope II 20 and a cross arm II 21, and the structure of the lower rotating mechanism is the same as that of the upper rotating mechanism.

A thrust bearing 8 is arranged between the two rotating mechanisms, namely, the lower part of the sleeve I6 is provided with the thrust bearing 8, as shown in fig. 5.

The cross arm I9 and the cross arm II 21 of the two rotating mechanisms are connected into a whole through two vertical rods 10.

As shown in figure 2, two inclined grooves are respectively formed on the end surfaces of the two small flywheels, and the included angle alpha between the length direction of the grooves and the radial direction is very small (alpha is less than or equal to 8 degrees). A pawl 17 and a spring 18 are arranged in the groove, the tail end of the pawl 17 is contacted with the tail end of the groove under the thrust action of the spring 18, and the head end of the pawl is contacted with the outer circular surface of the force transmission disc. Thus, a one-way clutch is formed. The two inclined grooves are centrosymmetric.

As shown in fig. 3, the flywheel further comprises a cover plate 3, wherein the cover plate 3 is arranged on the flywheel and is fixed with the flywheel through a screw 19.

The working principle of the utility model is as follows:

to avoid confusion, clockwise and counter-clockwise in this utility model refer to the turning when looking down from above.

Because the twist drill is used in the woodworking drill of the present utility model, it should be apparent that the twist drill should be rotated clockwise during operation. The working process is as follows:

1) The upper and lower cross arms are fixed by a clamp to be stationary. (or the other person is called to hold the upper and lower cross arms by two hands so as to keep them motionless).

2) When the operator twists the upper sleeve counterclockwise with one hand, the one-way clutch slips, and the upper rope is wound around the upper sleeve (in a right-handed threaded state). At the same time, the other hand of the operator turns the lower sleeve clockwise, the one-way clutch is stuck, the lower sleeve rotates simultaneously with the shaft, and the lower rope is wound on the lower sleeve (in a left-handed thread state). At this time, the upper and lower cross arms are raised synchronously by the same distance.

3) When the clamp is loosened, an operator holds the two ends of the lower cross arm and presses the cross arm downwards with sudden force, the upper sleeve rotates clockwise, the one-way clutch is blocked, the shaft is driven to rotate clockwise, so that the twist drill and the large flywheel rotate clockwise, and the twist drill starts to drill.

At the same time, the lower sleeve rotates counterclockwise, and the one-way clutch slips. The steering of the lower sleeve and the small flywheel is thus opposite to the steering of the shaft.

4) When the upper and lower cross arms are pressed to the lowest position, the rotational speed of the shaft (and the drill bit and the large flywheel) reaches a maximum.

After passing the position, the upper sleeve and the lower sleeve continue to rotate in the original direction under the action of the inertia of the small flywheel, and the ropes at the upper part and the lower part are respectively and reversely wound on the upper sleeve and the lower sleeve (respectively in a left-handed thread state and a right-handed thread state). At this time, the upper and lower cross arms start to rise until they cannot rise any more (up to the highest point). At this time, the upper sleeve, the lower sleeve and the small flywheel stop rotating, but the shaft and the large flywheel continue rotating clockwise under the action of inertia.

5) The operator presses down the cross arm forcefully, the upper sleeve rotates anticlockwise, and the one-way clutch slips. The steering of the upper sleeve is now opposite to the steering of the shaft.

At the same time, the lower sleeve rotates clockwise, the one-way clutch is blocked, and the shaft is driven to rotate clockwise.

6) When the upper and lower cross arms are pressed to the lowest position, the rotation speed of the shaft reaches the maximum value again.

At this point, the carpenter drill completes a power cycle. The shaft can continuously rotate unidirectionally (clockwise) until the drilling operation is completed as long as the upper and lower cross arms are continuously pressed down.

Claims (8)

1. The utility model provides a novel carpenter bores, includes axle (1), and the fixed drill bit (16) that is provided with in the extreme lower extreme of axle (1), its characterized in that: a large flywheel (14) is fixed at the lower part of the shaft (1), and two rotating mechanisms with the same structure are arranged on the shaft (1) and are positioned above the large flywheel (14);

the rotating mechanism comprises a force transmission disc, a small flywheel, a sleeve, a rope and a cross arm, wherein the force transmission disc is fixedly connected with the shaft (1), the small flywheel is sleeved outside the force transmission disc, the sleeve is sleeved outside the shaft (1), one end of the sleeve is fixedly connected with the small flywheel, the cross arm is sleeved outside the sleeve, and two ends of the cross arm are respectively connected with the upper part of the sleeve through the rope.

2. A novel woodworking drill according to claim 1, wherein: the large flywheel (14) is fixedly connected with the shaft (1) through a pin II (15), and the force transmission disc is fixedly connected with the shaft (1) through a pin.

3. A novel woodworking drill according to claim 1, wherein: a thrust bearing (8) is arranged between the two rotating mechanisms.

4. A novel woodworking drill according to claim 3, wherein: the cross arms of the two rotating mechanisms are connected into a whole through a vertical rod (10).

5. A novel woodworking drill according to any one of claims 1-4, wherein: two inclined grooves are formed in the end face of the small flywheel respectively, a pawl (17) and a spring (18) are arranged in the grooves, the tail end of the pawl (17) is contacted with the tail end of the groove under the thrust action of the spring (18), and the head end of the pawl is contacted with the outer circle surface of the force transmission disc.

6. A novel woodworking drill according to claim 5, wherein: the two inclined grooves are centrosymmetric.

7. A novel woodworking drill according to claim 6, wherein: the flywheel comprises a flywheel body, and is characterized by further comprising a cover plate (3), wherein the cover plate (3) is arranged on the flywheel body and is fixed with the flywheel body through screws (19).

8. A novel woodworking drill according to claim 1, 2, 3, 4, 6 or 7, wherein: the drill bit (16) is a twist drill bit.