Tapping device

Abstract

The utility model provides a tapping device, which comprises a fixed seat, a screw rod, a screw rod and a screw rod, the tapping mechanism comprises a first rotating shaft, a screw tap and a first gear, and the first rotating shaft is provided with a first external thread matched with the first internal thread so that the first rotating shaft can be connected to the fixing base in a threaded mode; the screw tap is arranged at one end of the first rotating shaft; the first gear is fixed on the first rotating shaft and coaxially rotates with the first rotating shaft; and the driving mechanism comprises a second rotating shaft, a second gear and a third gear, the second rotating shaft is rotationally arranged on the fixed seat, the second gear and the third gear can be radially positioned and axially moved relative to the second rotating shaft, and both the second gear and the third gear can be meshed with the first gear. According to the tapping device, the purpose that the neutral position can be adjusted without replacing the gear is achieved.

Description

Technical Field

[0001] The utility model relates to the field of tapping machine equipment, in particular to a tapping device. Background Art

[0002] In an automatic tapping machine, the forward and backward movement of the spindle (tap) is controlled by a travel switch. This control switch is very useful when it works normally, but once the switch fails, a malfunction may occur. The prior art slightly modifies the previous control mechanism. As a safety measure when the control switch fails, the safety measure used is to use a pair of driving gears and driven gears. The driving gear is fixed in the axial direction, while the driven gear can slide in the axial direction while rotating. If the neutral positions A and B are left at both ends of the spindle's moving stroke to disengage the driven gear from the driving gear, even if the travel switch fails during the processing and the spindle continues to move, the two gears can be disengaged at the neutral positions A and B, and the spindle stops rotating, ensuring the safety of the mechanism. However, due to the different tapping depths, several types of driving gears must be prepared in advance, with a width difference of 5 mm, and they must be replaced to adjust the application. The entire replacement process is time-consuming and inconvenient to adjust. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a tapping device to achieve the purpose of being able to adjust the neutral position without replacing the gear.

[0004] To this end, according to the first aspect, an embodiment provides a tapping device, comprising:

[0005] A fixing seat having a first internal thread;

[0006] A tapping mechanism, comprising a first rotating shaft, a tap and a first gear, wherein the first rotating shaft has a first external thread adapted to the first internal thread so that the first rotating shaft is screwed to the fixing seat; the tap is arranged at one end of the first rotating shaft, and the first gear is fixed on the first rotating shaft and rotates coaxially with the first rotating shaft; and

[0007] The driving mechanism includes a second rotating shaft, a second gear and a third gear. The second rotating shaft is rotatably arranged on the fixing seat. The second gear and the third gear can be radially positioned and axially moved relative to the second rotating shaft. The second gear and the third gear can mesh with the first gear.

[0008] As a further optional scheme of the tapping device, an adjustment mechanism is also provided, which includes an adjusting rod and a fork, the second rotating shaft has a first connecting portion, the first connecting portion extends axially along the second rotating shaft, the inner sides of the second gear and the third gear are each provided with a second connecting portion corresponding to the first connecting portion, the adjusting rod is installed on the fixed seat, the second rotating shaft has a first connecting portion, the first connecting portion extends axially along the second rotating shaft, the inner sides of the second gear and the third gear are each provided with a second connecting portion, the second connecting portion can be radially positioned and axially moved relative to the first connecting portion, and the second gear and the third gear can both mesh with the first gear.

[0009] As a further optional solution of the tapping device, the second gear is further provided with a limiting groove, and the fork portion of the shift fork is inserted into the limiting groove.

[0010] As a further optional scheme for the tapping device, the adjusting rod is rotatably arranged on the fixed seat, the adjusting rod is provided with a second external thread, and the shift fork is provided with a second internal thread adapted to the second external thread; the adjusting rod is rotated to make the shift fork drive the second gear to move, thereby adjusting the maximum distance between the second gear and the third gear.

[0011] As a further optional solution for the tapping device, a guide rod is further provided on the fixing seat, and the guide rod passes through the shift fork to prevent the shift fork from rotating along with the adjusting rod.

[0012] As a further optional solution for the tapping device, a knob is provided at one end of the adjusting rod to facilitate the adjusting personnel to turn the knob.

[0013] As a further optional solution of the tapping device, the width of the first gear is always greater than the distance between the second gear and the third gear.

[0014] As a further optional solution of the tapping device, the tapping mechanism further includes a chuck, which is fixed to one end of the first rotating shaft and is used to clamp the tap.

[0015] As a further optional solution of the tapping device, the tapping mechanism is provided with a retaining ring at one end of the first rotating shaft away from the tap to prevent the first rotating shaft from rotating out of the fixing seat.

[0016] As a further optional solution of the tapping device, a switch is further provided, and the switch is used to control the driving mechanism.

[0017] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0018] According to the tapping device in the above embodiment, the second rotating shaft of the driving mechanism rotates to drive the second gear and the third gear to rotate. The rotation of the second gear and the third gear can drive the first gear to rotate, thereby driving the first rotating shaft of the tapping mechanism to rotate. The first external thread of the first rotating shaft is adapted to the first internal thread of the fixed seat, so the first rotating shaft drives the tap to move axially along the first rotating shaft. When the first rotating shaft moves to a certain extent, the first gear will separate from the second gear and / or the third gear, that is, the first rotating shaft loses power, and the tapping wire will not move axially along the first rotating shaft. Since the second gear and the third gear can be radially positioned and axially moved relative to the second rotating shaft, they can rotate with the second rotating shaft, and can move upward along the axial direction of the second rotating shaft to adjust the spacing between the second gear and the third gear. Finally, the purpose of being able to adjust the neutral position without changing the gear is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] in:

[0021] Figure 1 The overall structural diagram of the tapping device provided according to the embodiment of the utility model is shown;

[0022] Figure 2 Shows Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 The overall structure schematic diagram of the tapping device provided by the embodiment of the utility model at a front view angle is shown;

[0024] Figure 4 The overall structure schematic diagram of the tapping device provided by the embodiment of the utility model from a top view is shown;

[0025] Figure 5 A schematic diagram of an exploded view of a tapping device provided according to an embodiment of the utility model is shown.

[0026] Description of main component symbols:

[0027] Fixed seat-10; tapping mechanism-20; first rotating shaft-210; tap-220; first gear-230; first external thread-270; driving mechanism-30; second rotating shaft-310; second gear-320; third gear-330; first connecting part-340; adjusting mechanism-40; adjusting rod-410; shift fork-420; fork-4210; limiting groove-3110; second external thread-4110; guide rod-50; knob-4120; chuck-240; retaining ring-250; switch-60. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] In the embodiment of the present utility model, a tapping device is provided. Figure 1-Figure 5The tapping device includes a fixed seat 10, a tapping mechanism 20 and a driving mechanism 30: the fixed seat 10 has a first internal thread (not shown); the tapping mechanism 20 includes a first rotating shaft 210, a tap 220 and a first gear 230, the first rotating shaft 210 has a first external thread 270 adapted to the first internal thread, so that the first rotating shaft 210 is screwed to the fixed seat 10; the tap 220 is arranged at one end of the first rotating shaft 210, the first gear 230 is fixed on the first rotating shaft 210 and rotates coaxially with the first rotating shaft 210; the driving mechanism 30 0, including a second rotating shaft 310, a second gear 320 and a third gear 330, the second rotating shaft 310 is rotatably arranged on the fixing seat 10, the second rotating shaft 310 has a first connecting portion 340, the first connecting portion 340 extends axially along the second rotating shaft 310, the inner sides of the second gear 320 and the third gear 330 are both provided with a second connecting portion (not shown in the figure), the second connecting portion (not shown in the figure) can be radially positioned and axially moved relative to the first connecting portion 340, and the second gear 320 and the third gear 330 can both mesh with the first gear 230.

[0032] According to the tapping device in the above embodiment, the second rotating shaft 310 of the driving mechanism 30 rotates to drive the second gear 320 and the third gear 330 to rotate. The second gear 320 and the third gear 330 drive the third gear 330 to drive the first rotating shaft 210 of the tapping mechanism 20 to rotate. The first external thread 270 of the first rotating shaft 210 is adapted to the first internal thread (not shown) of the fixing seat 10, so the first rotating shaft 210 drives the tap 220 to move along the axial direction of the first rotating shaft 210. When the first rotating shaft 210 moves to a certain extent, the first gear 230 will separate from the second gear 320 and / or the third gear 330, that is, the first rotating shaft 210 loses power, and the tapping wire will not move along the axial direction of the first rotating shaft 210. Since the second gear 320 and the third gear 330 can be radially positioned and axially moved relative to the second rotating shaft 310, they can rotate with the second rotating shaft 310, and can move upward along the axial direction of the second rotating shaft 310 to adjust the spacing between the second gear 320 and the third gear 330. Finally, the goal of being able to adjust the neutral position without changing the gears is achieved.

[0033] The first connection part 340 may be a groove, and the second connection part may be a protrusion inserted into the groove. Alternatively, the first connection part is a spline, and the second connection part is a pattern matching the spline. The second gear 320 and the third gear 330 can move relative to each other along the length direction of the second axis.

[0034] Generally speaking, the point where the first gear 230 separates from the third gear 330 and then starts to separate from the second gear 320 is called point A, and the point where the first gear 230 separates from the second gear 320 and then starts to separate from the third gear 330 is called point B.

[0035] In some specific embodiments, please refer to Figure 1 , Figure 2 and Figure 5 An adjusting mechanism 40 is also provided, and the adjusting mechanism 40 includes an adjusting rod 410 and a fork 420. The adjusting rod 410 is installed on the fixing seat 10, and the fork 420 is installed on the adjusting rod 410. The fork portion 4210 of the fork 420 abuts against the second gear 320. Operating the adjusting rod 410 can enable the fork 420 to drive the second gear 320 to move along the length direction of the first connecting portion 340.

[0036] Although the operator can manually move the second gear 320 to adjust the relationship between the second gear 320 and the third gear 330, since the second rotating shaft 310 is a driving shaft, there is a great safety risk in manually moving the second gear 320. Therefore, an adjustment mechanism 40 is required to adjust the position of the second gear 320.

[0037] In this embodiment, through the adjusting rod 410 and the shift fork 420, the operator only needs to operate the adjusting rod 410 to drive the shift fork 420 to move the second gear 320. Due to the limiting effect of the adjusting rod 410, even if the driving mechanism 30 is started by mistake, no harm will be caused to the operator.

[0038] Specifically, the adjusting rod 410 can be moved along its own axial direction, thereby driving the second gear 320 to move.

[0039] Generally speaking, the third gear 330 is fixed, that is, point B is generally constant. The second gear 320 is also limited, so as to prevent the second gear 320 from moving out of the first connecting portion 340 .

[0040] In some specific embodiments, please refer to Figure 2 , Figure 3 and Figure 5 The second gear 320 is also provided with a limiting groove 3110 , and the fork portion 4210 of the shift fork 420 is inserted into the limiting groove 3110 .

[0041] When there is no limiting groove 3110, the shift fork 420 can generally only move the second gear 320 in one direction. In this embodiment, since the second gear 320 is provided with the limiting groove 3110, the fork portion 4210 of the shift fork 420 is stuck in the limiting groove 3110, and the shift fork 420 can drive the second gear 320 to move together no matter how it is moved. In addition, the shift fork 420 will not affect the rotation of the second gear 320.

[0042] It should be noted that there are other technical solutions that can realize the fork 420 to move the second gear 320 in two directions. For example, a fork 420 and an adjustment rod 410 corresponding to the fork 420 are respectively provided on both sides of the second gear 320. In this way, the second gear 320 can be freely moved in both directions.

[0043] In some specific embodiments, the adjusting rod 410 is rotatably set on the fixed seat 10, the adjusting rod 410 is provided with a second external thread 4110, and the fork 420 is provided with a second internal thread (not shown in the figure) adapted to the second external thread 4110; the adjusting rod 410 is rotated to allow the fork 420 to drive the second gear 320 to move, thereby adjusting the distance between the second gear 320 and the third gear 330.

[0044] In this embodiment, when the distance between the second gear 320 and the third gear 330 needs to be changed, the operator rotates the adjustment rod 410. Due to the interaction between the second external thread 4110 and the second internal thread (not shown), the fork 420 moves a certain distance every time the adjustment rod 410 rotates one circle, and the fork 420 drives the second gear 320 to move a certain distance. This arrangement can more accurately adjust the A and B points of the tapping device.

[0045] Furthermore, a scale is set on the adjustment rod 410, and the A and B points of the tapping device can be accurately known by observing the scale.

[0046] In some specific embodiments, a guide rod 50 is further provided on the fixing seat 10 , and a shift fork 420 is passed through the guide rod 50 to prevent the shift fork 420 from rotating along with the adjusting rod 410 .

[0047] The main function of the guide rod 50 is to guide the movement of the shift fork 420 to ensure that the shift fork 420 moves along the axial direction of the second rotating shaft 310 .

[0048] In some specific embodiments, a knob 4120 is provided at one end of the adjustment rod 410 to facilitate the adjuster to turn the knob 4120 .

[0049] The knob 4120 is a manual component that is turned by hand. The outer surface of the knob 4120 is generally provided with anti-slip grooves, and the adjustment rod 410 is driven to rotate by twisting the knob 4120.

[0050] In some specific embodiments, the width of the first gear 230 is always greater than the maximum distance between the second gear 320 and the third gear 330 .

[0051] The width of the first gear 230 is always greater than the distance between the second gear 320 and the third gear 330 , which can prevent the first gear 230 from being disconnected between the second gear 320 and the third gear 330 , thereby causing the tapping mechanism 20 to lose driving force.

[0052] In some specific embodiments, the tapping mechanism 20 further includes a chuck 240 , which is fixed to one end of the first rotating shaft 210 and is used to clamp the tap 220 .

[0053] Tap 220 is a tool for processing internal threads. According to the shape, it can be divided into spiral groove taps, blade angle taps, straight groove taps and pipe thread taps, etc. According to the use environment, it can be divided into hand taps and machine taps. According to the specifications, it can be divided into metric, American, and imperial taps. Tap 220 is the most mainstream processing tool used by manufacturing operators when tapping. For different workpieces, different specifications of taps 220 are required to match. In addition, the wear and tear of tap 220 is also very large and needs to be replaced frequently.

[0054] In this embodiment, the chuck 240 can well and quickly complete the replacement of the tap 220. Generally speaking, the function of the chuck 240 is to connect the tap 220 and the first rotating shaft 210.

[0055] In some specific embodiments, please refer to Figure 4 and Figure 5 The tapping mechanism 20 is provided with a retaining ring 250 at one end of the first rotating shaft 210 away from the tap 220 to prevent the first rotating shaft 210 from rotating out of the fixing seat 10 .

[0056] The retaining ring 250 can prevent one end of the first rotating shaft 210 from being completely rotated out of the fixing seat 10 in the case of misoperation. In addition, the tapping mechanism 20 can be calibrated by rotating the retaining ring 250 .

[0057] In some specific embodiments, a switch 60 is further provided, and the switch 60 is used to control the driving mechanism 30 .

[0058] The rotation of the second rotating shaft 310 is generally driven by a motor, and the switch 60 can be used to control the operation of the motor. Generally speaking, the motor is preferably a stepper motor or a servo motor, and the processing depth of the tapping mechanism 20 is controlled by inputting specific parameter values.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A tapping device, characterized in that: include: A fixing seat (10) having a first internal thread; A tapping mechanism (20) comprises a first rotating shaft (210), a tap (220) and a first gear (230), wherein the first rotating shaft (210) has a first external thread (270) adapted to the first internal thread, so that the first rotating shaft (210) is screwed to the fixing seat (10); the tap (220) is arranged at one end of the first rotating shaft (210), and the first gear (230) is fixed on the first rotating shaft (210) and rotates coaxially with the first rotating shaft (210); and The driving mechanism (30) comprises a second rotating shaft (310), a second gear (320) and a third gear (330); the second rotating shaft (310) is rotatably arranged on the fixing seat (10); the second gear (320) and the third gear (330) can be radially positioned and axially moved relative to the second rotating shaft (310); and the second gear (320) and the third gear (330) can both mesh with the first gear (230).

2. The tapping device according to claim 1, characterized in that An adjustment mechanism (40) is also provided, the adjustment mechanism (40) comprising an adjustment rod (410) and a shift fork (420), the second rotating shaft (310) having a first connection portion, the first connection portion extending along the axial direction of the second rotating shaft (310), the inner sides of the second gear (320) and the third gear (330) are both provided with a second connection portion corresponding to the first connection portion, the adjustment rod (410) is mounted on the fixing seat (10), the shift fork (420) is mounted on the adjustment rod (410), the fork portion (4210) of the shift fork (420) is in contact with the second gear (320), and the operation of the adjustment rod (410) can enable the shift fork (420) to drive the second gear (320) to move along the length direction of the first connection portion (340).

3. The tapping device according to claim 2, characterized in that The second gear (320) is also provided with a limiting groove (3110), and the fork portion (4210) of the shift fork (420) is inserted into the limiting groove (3110).

4. The tapping device according to claim 3, characterized in that The adjusting rod (410) is rotatably arranged on the fixing seat (10); the adjusting rod (410) is provided with a second external thread (4110); the shift fork (420) is provided with a second internal thread matched with the second external thread (4110); the adjusting rod (410) is rotated so that the shift fork (420) drives the second gear (320) to move, thereby adjusting the distance between the second gear (320) and the third gear (330).

5. The tapping device according to claim 2, characterized in that: A guide rod (50) is also provided on the fixing seat (10), and the guide rod (50) passes through the shift fork (420) to prevent the shift fork (420) from rotating along with the adjusting rod (410).

6. The tapping device according to claim 2, characterized in that: A knob (4120) is provided at one end of the adjustment rod (410) to facilitate an adjustment person to turn the knob (4120).

7. The tapping device according to claim 1, characterized in that: The width of the first gear (230) is greater than the maximum distance between the second gear (320) and the third gear (330).

8. The tapping device according to claim 1, characterized in that: The tapping mechanism (20) further comprises a chuck (240), wherein the chuck (240) is fixed to one end of the first rotating shaft (210) and is used to clamp the tap (220).

9. The tapping device according to claim 1, characterized in that: The tapping mechanism (20) is provided with a retaining ring (250) at one end of the first rotating shaft (210) away from the tap (220) to prevent the first rotating shaft (210) from rotating out of the fixing seat (10).

10. The tapping device according to claim 1, characterized in that: A switch (60) is also provided, and the switch (60) is used to control the driving mechanism (30).

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