Simple tapping guide device

Abstract

The utility model discloses a simple tapping guide device, which belongs to the technical field of tapping devices and comprises a screw tap clamping mechanism, a tapping guide mechanism and a base. The screw tap clamping mechanism is provided with a left handle, a fixed V-shaped block, a guide shaft, a movable V-shaped block, a screw tap, a compression spring and a right handle; the tapping guide mechanism is provided with a guide sleeve, a guide seat, a thrust washer and a reset spring; and the base is provided with a spring bottom placing hole, a screw mounting hole and a lower observation hole. The tapping precision is high, the perpendicularity of the screw tap and the surface of a workpiece is well guaranteed during tapping, alignment is not needed, the problem that the screw tap inclines and is prone to being broken during traditional manual tapping is well solved, the tapping efficiency is high, labor intensity is low, alignment of the screw tap is not needed in the operation process, and the tapping efficiency is greatly improved; and the screw tap clamping mechanism can clamp screw taps of different specifications, replacement is rapid and convenient, and durability is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tapping devices, and in particular relates to a simple tapping guide device. Background Art

[0002] Tapping, also known as threading, is the operation of cutting internal threads in a hole with a tap. The traditional manual tapping operation is to install the tap into the hinge lever, then hold the two ends of the hinge lever handle with both hands and turn the hinge lever so that the hinge lever drives the tap to cut the internal threads. The existing tapping has the following disadvantages: During the tapping process, due to the uneven pressure of the two hands and poor balance, it is easy to cause the tap to tilt during the tapping process, and the tap is not perpendicular to the workpiece surface, causing the tapped tooth shape to be skewed, and in severe cases, the wire will break. If the tap breaks in the bottom hole, it will cause great trouble to the operator; and before tapping, in order to ensure the verticality of the tap, the operator needs to constantly check the verticality of the tap and the workpiece with a square, resulting in low tapping efficiency and high labor intensity. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a simple tapping guide device. The tapping device can effectively solve the problem of the tap being tilted and easily broken during traditional manual tapping involved in the background technology, and can ensure that the tap and the workpiece surface always remain in a vertical state, thereby improving the tapping processing accuracy and tapping speed.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A simple tapping guide device, characterized in that it includes a tap clamping mechanism, a tapping guide mechanism, and a base; the tap clamping mechanism is provided with a left handle, a fixed V-block, a guide shaft, a movable V-block, a tap, a compression spring, and a right handle; the tapping guide mechanism is provided with a guide sleeve, a guide seat, a thrust washer, and a reset spring; the base is provided with a spring bottom placement hole, a screw mounting hole, and a lower observation hole.

[0006] Furthermore, the guide shaft is provided with a tap placement hole, a guide slot, and a guide hole; the right handle can pass through the guide hole and be connected to the internal thread of the movable V-shaped block through the external thread at the end of the right handle; the right end of the movable V-shaped block is connected to a compression spring, and under the action of the compression spring, the movable V-shaped block slides left and right at the right end of the guide slot, and can clamp taps of different specifications.

[0007] Furthermore, the outer diameter of the guide shaft and the inner diameter of the guide sleeve are clearance-matched, and axial movement can be performed inside the guide sleeve; a stepped shaft is provided on the bottom surface of the guide shaft to engage with the thrust washer, and driven by the thrust washer, axial movement is performed in the spring placement hole.

[0008] Furthermore, the guide seat is provided with an upper observation hole, and the base is provided with a lower observation hole, and the working end of the tap can be observed through the upper observation hole and the lower observation hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model has high tapping accuracy, and can well ensure the verticality between the tap and the workpiece surface during tapping, with high tapping efficiency and low labor intensity. The device adopts high-precision outer diameter of the guide shaft and the guide sleeve to precisely match, which ensures the movement accuracy of the tap, and well solves the problem of tap tilting and easy breaking during traditional manual tapping. There is no need to align the tap during operation, which greatly improves the tapping efficiency.

[0011] 2. The tap clamping mechanism of the utility model adopts a V-block spring clamping design, which can clamp taps of different specifications, and is quick and convenient to replace and durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is an exploded view of the structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the use of the utility model;

[0015] Figure 4 This is a schematic diagram of the guide shaft structure in the utility model;

[0016] Figure 5 This is a top view of the guide shaft in the utility model;

[0017] Figure 6 This is a full cross-sectional view of the guide shaft in the utility model;

[0018] Figure 7 This is a schematic diagram of the guide seat structure in the utility model;

[0019] Figure 8 This is a bottom view of the guide seat in the utility model;

[0020] Fig. 9 This is a schematic diagram of the base structure in the utility model;

[0021] Reference numerals:

[0022] 1. Tap clamping mechanism; 11. Left handle; 12. Fixed V-block; 13. Guide shaft; 131. Tap placement hole; 132. Guide groove; 133. Guide hole; 134. Threaded fixing hole; 135. Step shaft; 14. Movable V-block; 15. Tap; 16. Compression spring; 17. Right handle; 2. Tapping guide mechanism; 21. Guide sleeve; 22. Guide seat; 221. Guide sleeve mounting hole; 222. Upper observation hole; 223. Spring placement hole; 224. Threaded hole; 23. Thrust washer; 24. Reset spring; 3. Base; 31. Spring bottom placement hole; 32. Screw mounting hole; 33. Lower observation hole; 4. Workpiece. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] As attached Figure 1 To Attachment Fig. 9 As shown, the device is composed of three parts: a tap holding mechanism 1, a tapping guide mechanism 2, and a base 3. The tap holding mechanism 1 is provided with a left handle 11 and a guide shaft 13. The end of the left handle 11 is provided with an external thread, and the left end face of the guide shaft 13 is provided with a threaded fixing hole 134. The left handle 11 is connected and fixed to the threaded fixing hole 134 of the guide shaft 13 through the external thread at the end; the guide shaft 13 is provided with a tap placement hole 131 and a guide groove 132, and the fixed V-shaped block 12 is embedded in the left end of the guide groove 132 by means of interference fit, and the movable V-shaped block 14 is provided by means of clearance fit. The right end face of the guide shaft 13 is provided with a guide hole 133, and the end of the movable V-shaped block 14 is provided with an internal thread. The right handle 17 can pass through the guide hole 133, and the external thread at the end of the right handle 17 is connected with the internal thread of the movable V-shaped block 14. The right end of the movable V-shaped block 14 is connected with a compression spring 16. Under the action of the compression spring 16, the movable V-shaped block 14 slides left and right at the right end of the guide groove 132, and can clamp taps 15 of different specifications. The guide shaft 13 is made of lightweight aluminum alloy material, and the fixed V-shaped block 12 and the movable V-shaped block 14 are made of high-carbon steel with good wear resistance. They can withstand large torque when tapping and are durable.

[0025] The tapping guide mechanism 2 is provided with a guide sleeve 21, a guide seat 22, a thrust washer 23, and a reset spring 24. The outer diameter of the guide sleeve 21 and the inner hole of the guide seat 22 are fixed by interference fit; the outer diameter of the guide shaft 13 and the inner diameter of the guide sleeve 21 are clearance-fitted, and the guide shaft 13 can move axially inside the guide sleeve 21. The bottom surface of the guide shaft 13 is provided with a stepped shaft 135. When assembling the device, firstly, the outer diameter of the guide shaft 13 is inserted into the inner diameter of the guide sleeve 21, and then the inner ring of the thrust washer 23 is inserted into the stepped shaft 135 on the bottom surface of the guide shaft 13 for clamping and fixing, and then the reset spring 24 is placed in the spring placement hole 223 inside the guide seat 22, and finally, a screw is passed through the screw installation hole 32 on the base 3 and connected and fixed with the threaded hole 224 on the guide seat 22.

[0026] A specific application of this embodiment is: when in use, the operator first holds the left handle 11 with the left hand, and pulls the right handle 17 outward with the right hand, at which time the movable V-shaped block 14 slides to the right following the right handle 17, and then puts the tap 15 into the tap placement hole 131, and makes the head end face of the tap 15 flush with the end face of the guide shaft 13, then releases the right hand, and the movable V-shaped block 14 moves to the left under the action of the compression spring 16, so that the tap 15 is clamped between the fixed V-shaped block 12 and the movable V-shaped block 14, and the tap 15 is installed. The operator places the device on the workpiece 4 that needs to be tapped, and observes the relative position of the working end of the tap 15 and the bottom hole on the workpiece through the upper observation hole 222 and the lower observation hole 33, and timely adjusts the placement position of the tapping device so that the tap 15 is accurately aligned with the upper end of the bottom hole of the workpiece 4. At this time, tapping begins. Since the outer diameter of the guide shaft 13 on the tap clamping mechanism 1 and the inner diameter of the guide sleeve 21 on the tapping guide mechanism 2 are precisely matched, the movement accuracy of the tap during tapping can be guaranteed. The operator only needs to hold the left handle 11 and the right handle 17 on the tap clamping mechanism 1 with his left and right hands respectively, and apply a little force downward, and slowly twist the tap clamping mechanism 1 clockwise, which drives the rotation of the tap 15 to achieve tapping of the workpiece 4. After the tapping is completed, the operator only needs to twist the left and right handles counterclockwise to withdraw the tap 15 from the workpiece 4, and the tapping process of the workpiece is completed. During the entire tapping process, due to the characteristics of the device, the tap 15 is always perpendicular to the surface of the workpiece 4. The operator does not need to align the tap 15. He only needs to install the tap 15 in the device to start tapping, and the tapping quality can be guaranteed, which greatly improves the tapping efficiency.

[0027] In addition, the tap clamping mechanism 1 of the device adopts a V-block spring clamping design, which can clamp taps of different specifications. When it is necessary to tap threads of different specifications on the workpiece, the corresponding tap can be easily placed therein by simply pulling open the right handle 17. It can be clamped after releasing the hand. Compared with the traditional tap hinge lever, it is quick and convenient to replace, durable, and improves the life of the structure.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A simple tapping guide device, characterized in that: The invention comprises a tap clamping mechanism (1), a tapping guide mechanism (2), and a base (3); the tap clamping mechanism (1) is provided with a left handle (11), a fixed V-shaped block (12), a guide shaft (13), a movable V-shaped block (14), a tap (15), a compression spring (16), and a right handle (17); the tapping guide mechanism (2) is provided with a guide sleeve (21), a guide seat (22), a thrust washer (23), and a return spring (24); and the base (3) is provided with a spring bottom placement hole (31), a screw mounting hole (32), and a lower observation hole (33).

2. A simple tapping guide device according to claim 1, characterized in that: The guide shaft (13) is provided with a tap placement hole (131), a guide groove (132), and a guide hole (133); the fixed V-shaped block (12) is embedded in the left end of the guide groove (132) by interference fit, and the movable V-shaped block (14) is placed in the right end of the guide groove (132) by clearance fit; the right handle (17) can pass through the guide hole (133) and is connected to the inner thread of the movable V-shaped block (14) through the outer thread at the end of the right handle (17); the right end of the movable V-shaped block (14) is connected with a compression spring (16), and under the action of the compression spring (16), the movable V-shaped block (14) slides left and right at the right end of the guide groove (132), so as to clamp taps (15) of different specifications.

3. A simple tapping guide device according to claim 1, characterized in that: The outer diameter of the guide shaft (13) and the inner diameter of the guide sleeve (21) are clearance-matched, and the guide shaft (13) can move axially inside the guide sleeve (21); a stepped shaft (135) is provided on the bottom surface of the guide shaft (13) and is engaged with the thrust washer (23), and driven by the thrust washer (23), the guide shaft (13) can move axially in the spring placement hole (223).

4. A simple tapping guide device according to claim 1, characterized in that: The guide seat (22) is provided with an upper observation hole (222), and the base (3) is provided with a lower observation hole (33), and the working end of the tap (15) can be observed through the upper observation hole (222) and the lower observation hole (33).

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