Self-lubricating screw tap structure

Abstract

The utility model discloses a self-lubricating screw tap structure which comprises a taper shank, a taper head and a plurality of taper strips, a transmission cavity is jointly arranged in the taper shank and the taper head, a driving gear is arranged in the transmission cavity through a supporting mechanism, a plurality of rotating cavities are arranged in the taper head, screw rods extending into the transmission cavity are arranged in the rotating cavities in a rotating mode, and the driving gear is arranged in the driving gear. The screw rod is connected with the driving gear through a transmission mechanism, the conical strip is connected with the screw rod through a connecting mechanism, a plurality of oil storage cavities are formed in the conical head, and a plurality of oil outlet holes communicated with the oil storage cavities are formed in the outer wall of the conical head. Through the arrangement of the driving gear, the transmission gear, the screw rod, the connecting frame and the conical strip, the screw tap structure designed in the scheme can be adjusted within a certain range, so that the device is suitable for tapping holes with different inner diameters, and the applicability of the device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing tools, in particular to a self-lubricating tap structure. Background Art

[0002] Traditional taps are generally divided into head tap and second tap. After the head tap is used, the tap is poured out from the tapping hole. At this time, some tapping debris will fall into the tapping hole, causing inconvenience for the second tap to tap again. The tap will be scrapped if it breaks (special metal materials are hard and easy to break) or wears out after a long time of use. The materials used for taps are all special metal materials, which are expensive, so this is a great waste.

[0003] Taps are widely used in mechanical processing. Taps are composed of a working part and a handle. The working part is divided into a cutting part and a calibration part. The former is ground with a cutting cone and is responsible for cutting, and the latter is used to calibrate the size and shape of the thread. However, the existing taps have the disadvantages of complex structure, inconvenient maintenance and replacement, and the size of the tap is fixed. One tap can only process one specification of thread, which has poor practicality. In order to deal with this technical problem, a self-lubricating tap structure is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a self-lubricating tap structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-lubricating tap structure comprises a taper shank, a taper head and a plurality of taper strips, wherein a transmission cavity is provided in the taper shank and the taper head, a driving gear is provided in the transmission cavity via a supporting mechanism, a plurality of rotating cavities are provided in the taper head, a screw extending into the transmission cavity is rotatably provided in the rotating cavity, the screw is connected to the driving gear via a transmission mechanism, the taper strips are connected to the screw via a connecting mechanism, a plurality of oil storage chambers are provided in the taper head, and a plurality of oil outlet holes communicating with the oil storage chambers are provided on an outer wall of the taper head.

[0007] Preferably, the support mechanism comprises a support shaft mounted on the bottom wall of the transmission cavity, and the driving gear is fixedly mounted on the support shaft.

[0008] Preferably, the transmission mechanism comprises a transmission gear mounted on the end of the screw, and the transmission gear and the driving gear are both bevel gears and mesh vertically.

[0009] Preferably, the connection mechanism comprises a connection frame threadedly mounted on the screw rod, the connection frame is U-shaped and both ends are fixedly connected to the cone bar.

[0010] Preferably, a clamping groove is provided on the upper end surface of the driving gear, and an adjustment channel is provided on the cone handle and the cone head.

[0011] Preferably, the top view of the engaging groove is a regular hexagon, and the top view of the adjusting channel is a circle.

[0012] Preferably, the diameter of the circumscribed circle of the top view of the snap-fit ​​groove is smaller than the diameter of the top view of the adjustment channel, and the ratio of the diameter of the circumscribed circle of the top view of the snap-fit ​​groove to the diameter of the top view of the adjustment channel is 1:1.2.

[0013] Preferably, the tapered strips and the oil outlet holes are circumferentially distributed with equal spacing, and the tapered strips and the oil outlet holes are staggered.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting the driving gear, transmission gear, screw, connecting frame and taper bar, the tap structure designed in this scheme can be adjusted within a certain range, so as to adapt to the tapping of holes with different inner diameters, thereby ensuring the applicability of the device.

[0016] 2. By providing an oil storage chamber, an oil inlet channel and an oil outlet hole, the tap structure designed in this scheme has the functions of lubricating oil storage and discharge, thereby improving the functionality and ease of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a self-lubricating tap structure proposed by the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the vertical section structure;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure at B;

[0021] Figure 5 This is a schematic diagram of an oil storage chamber of a self-lubricating tap structure proposed by the utility model.

[0022] In the figure: 1 cone handle, 2 cone head, 3 cone bar, 4 oil outlet hole, 5 adjustment channel, 6 oil inlet channel, 7 transmission chamber, 8 rotation chamber, 9 screw, 10 connecting frame, 11 support shaft, 12 driving gear, 13 clamping groove, 14 transmission gear, 15 oil storage chamber. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5 A self-lubricating tap structure comprises a taper shank 1, a taper head 2 and a plurality of taper strips 3. A transmission cavity 7 is provided in the taper shank 1 and the taper head 2. A driving gear 12 is provided in the transmission cavity 7 through a supporting mechanism. A plurality of rotating cavities 8 are provided in the taper head 2. A screw 9 extending into the transmission cavity 7 is provided in the rotating cavity 8. The screw 9 is connected to the driving gear 12 through a transmission mechanism. The taper strips 3 are connected to the screw 9 through a connecting mechanism. A plurality of oil storage chambers 15 are provided in the taper head 2. A plurality of oil outlet holes 4 communicating with the oil storage chambers 15 are provided on the outer wall of the taper head 2.

[0025] The supporting mechanism comprises a supporting shaft 11 mounted on the inner bottom wall of the transmission chamber 7 , and a driving gear 12 is fixedly mounted on the supporting shaft 11 . The supporting shaft 11 realizes stable support of the driving gear 12 in the transmission chamber 7 .

[0026] The transmission mechanism includes a transmission gear 14 installed on the end of the screw rod 9. The transmission gear 14 and the driving gear 12 are both bevel gears and mesh vertically. As shown in the figure, the driving gear 12 and the transmission gear 14 mesh with each other to play a role in power transmission. After the driving gear 12 rotates, the two screw rods 9 can rotate synchronously.

[0027] The connecting mechanism includes a connecting frame 10 threadedly installed on the screw 9. The connecting frame 10 is U-shaped and both ends are fixedly connected to the cone bar 3. As shown in the figure, the horizontal part of the connecting frame 10 slides through the inner wall of the transmission cavity 7 and extends to the outside of the cone head 2, so it has its own limit and will not rotate with the screw 9.

[0028] A snap-fit ​​groove 13 is provided on the upper end surface of the driving gear 12, and an adjustment channel 5 is provided on the cone handle 1 and the cone head 2. The snap-fit ​​groove 13 is a regular hexagon in top view, and the adjustment channel 5 is a circle in top view. The diameter of the circle is larger than the diameter of the circumscribed circle of the regular hexagon, so as to avoid obstruction and influence on the adjustment components entering therein.

[0029] The cone bars 3 and the oil outlet holes 4 are circumferentially evenly spaced. The cone bars 3 and the oil outlet holes 4 are staggered. The circumferentially evenly spaced distribution has stability and uniformity, and the staggered design avoids mutual influence.

[0030] When the utility model is used, the lubricating oil enters the oil storage chamber 15 through the oil inlet channel 6, and along with the centrifugal force generated by the rotating processing of the tap, the lubricating oil is discharged through the oil outlet hole 4, thereby realizing self-lubricating operation.

[0031] In the present scheme, with the help of the structural component with a regular hexagonal cross-sectional view, the long rod passes through the adjustment channel 5 into the transmission cavity 7, and the above-mentioned structural component enters the clamping groove 13 to complete the clamping, and then the long rod cooperates with the above-mentioned component to rotate to drive the driving gear 12 to rotate, and the driving gear 12 cooperates with the transmission gear 14 to drive the screw 9 to rotate. When the screw 9 rotates, the connecting frame 10 threadedly mounted on it will move along the circumference of the screw 9, driving the cone bar 3 to move and adjust the distance between it and the cone head 2, so as to adapt to the tapping process of holes with different inner diameters. The larger the diameter of the circle formed by the cone bar 3, the less contact part it has with the hole, but it does not affect the tapping process results.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-lubricating tap structure, comprising a taper shank (1), a taper head (2) and a plurality of taper strips (3), characterized in that: The cone handle (1) and the cone head (2) are provided with a transmission cavity (7) together, a driving gear (12) is provided in the transmission cavity (7) via a supporting mechanism, a plurality of rotating cavities (8) are provided in the cone head (2), a screw (9) extending into the transmission cavity (7) is rotatably provided in the rotating cavity (8), the screw (9) is connected to the driving gear (12) via a transmission mechanism, the cone bar (3) is connected to the screw (9) via a connecting mechanism, a plurality of oil storage chambers (15) are provided in the cone head (2), and a plurality of oil outlet holes (4) communicating with the oil storage chambers (15) are provided on the outer wall of the cone head (2).

2. A self-lubricating tap structure according to claim 1, characterized in that: The support mechanism comprises a support shaft (11) mounted on the inner bottom wall of the transmission chamber (7), and the driving gear (12) is fixedly mounted on the support shaft (11).

3. A self-lubricating tap structure according to claim 2, characterized in that: The transmission mechanism comprises a transmission gear (14) mounted on the end of the screw rod (9); the transmission gear (14) and the driving gear (12) are both bevel gears and mesh vertically.

4. A self-lubricating tap structure according to claim 3, characterized in that: The connection mechanism comprises a connection frame (10) threadedly mounted on a screw rod (9); the connection frame (10) is U-shaped and both ends are fixedly connected to the cone bar (3).

5. A self-lubricating tap structure according to claim 4, characterized in that: The upper end surface of the driving gear (12) is provided with a clamping groove (13), and the cone handle (1) and the cone head (2) are both provided with an adjustment channel (5).

6. A self-lubricating tap structure according to claim 5, characterized in that: The clamping groove (13) is in a regular hexagonal shape in a top view, and the adjustment channel (5) is in a circular shape in a top view.

7. A self-lubricating tap structure according to claim 6, characterized in that: The diameter of the circumscribed circle of the top view of the clamping groove (13) is smaller than the diameter of the top view of the adjusting channel (5), and the ratio of the diameter of the circumscribed circle of the top view of the clamping groove (13) to the diameter of the top view of the adjusting channel (5) is 1:1.

2.

8. The self-lubricating tap structure according to claim 7, characterized in that: The tapered strips (3) and the oil outlet holes (4) are circumferentially distributed at equal intervals, and the tapered strips (3) and the oil outlet holes (4) are staggered in design.

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