CN218591901U

CN218591901U - High-strength high-speed steel twist drill

Info

Publication number: CN218591901U
Application number: CN202222492245.3U
Authority: CN
Inventors: 吴建忠; 周亚亚; 孙伟; 卢韦
Original assignee: Jiangsu Tiangong Precision Tools Co ltd
Current assignee: Jiangsu Tiangong Precision Tools Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-03-10
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses a high-strength high-speed steel twist drill, including the twist drill main part, the chip groove has all been processed to the inside of twist drill main part both sides, the top fixedly connected with switching platform of twist drill main part, the top fixedly connected with fixed connection handle of switching platform, the top outer wall sculpture of fixed connection handle has the size sign, the protection branch cover has been cup jointed in the outside activity of switching platform, the top of protection branch cover is provided with the supporting disk, the front and the back and the equal fixedly connected with position sleeve pole in both sides of supporting disk bottom, position slot has all been seted up to the front and the back and both sides on protection branch cover top, position sleeve pole activity is pegged graft in position slot's inside, supporting spring has been cup jointed in position sleeve pole's outside activity. The utility model discloses a fixed connection handle is fixed at the top of switching platform to the outer wall sculpture size at the fixed connection handle is discerned, can prevent that the fixed connection handle from being rotated by the centre gripping back, has effectively avoided the size sign to be worn and torn, and the staff of being convenient for takes accurately the utility model discloses a fixed connection handle is fixed to the top of switching platform to the outer wall sculpture size of fixed connection handle is discerned, the utility model discloses a fixed connection handle is fixed to the centre gripping back, and the staff of being convenient for is accurate.

Description

High-strength high-speed steel twist drill

Technical Field

The utility model relates to a drill bit technical field, more specifically say, the utility model relates to a high-strength high-speed steel twist drill.

Background

The twist drill mainly comprises a handle part, a neck part and a working part, the twist drill can be clamped on a manual or electric handheld drilling tool or a drilling machine, a milling machine, a lathe or even a machining center, the twist drill rotates around a relatively fixed axis through the drilling tool, the drilling work can be carried out on a workpiece, the material of the twist drill is generally high-speed tool steel or hard alloy, the material has larger hardness difference with the workpiece to be machined, and the drilling work on the workpiece is convenient to carry out.

Twist drill is at rotatory in-process, mainly utilize the cutting edge of processing on the helicla flute cell wall to carry out the cutting work of work piece, can discharge the piece that produces in the cutting process through the helicla flute in the cutting process, but most drill bits are the round bar with the junction of anchor clamps and all process at the round bar outer wall and have the size sign, after the drill bit uses for a long time, the size sign can make the sign damage because of the round bar internal rotation in anchor clamps, the condition that uses the drill bit of wrong size to carry out drilling appears easily, lead to the target work piece to scrap.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a high-speed steel fluted drill of high strength, the utility model aims to solve the technical problem that: the size sign of present processing at the fluted drill pole outer wall can make the sign damage because of the pole internal rotation at anchor clamps, appears easily using the condition that wrong size's drill bit was drilled.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a high-speed steel fluted drill of high strength, includes the fluted drill main part, the chip groove has all been processed to the inside of fluted drill main part both sides, the top fixedly connected with switching platform of fluted drill main part, the top fixedly connected with fixed connection handle of switching platform, the top outer wall sculpture of fixed connection handle has size sign, the protection branch cover has been cup jointed in the outside activity of switching platform.

In a preferred embodiment, the connecting handle groove is formed in the bottom end of the protection support sleeve, the connecting handle groove is matched with the adapter table, the table groove is formed in the top end of the protection support sleeve, the table groove is communicated with the connecting handle groove, the fixed connecting handle is movably connected in the table groove, the connecting handle groove and the table groove are formed in the protection support sleeve, and the protection support sleeve is convenient to use to increase the shearing resistance of the fixed connecting handle and the twist drill main body after connection.

In a preferred embodiment, the top of the protection support sleeve is provided with a support plate, the support plate is movably sleeved outside the fixed connection handle, the front and the back of the bottom end of the support plate and the positioning sleeve rods fixedly connected to the two sides of the bottom end of the support plate, the positioning slots are formed in the front and the back of the top end of the protection support sleeve and the two sides of the top end of the protection support sleeve, the positioning sleeve rods are movably inserted in the positioning slots, the support springs are movably sleeved outside the positioning sleeve rods, and the support springs are supported between the support plate and the protection support sleeve, so that the inner wall of the connection handle groove is attached to the inner wall of the transfer table after the protection rubber mat at the top of the support plate is contacted with a drilling tool.

In a preferred embodiment, the top end of the supporting spring is fixedly connected with the bottom end of the supporting disc, the bottom end of the supporting spring is fixedly connected with the top end of the protective support sleeve, and the supporting disc and the protective support sleeve can be integrally formed by fixing the supporting spring between the supporting disc and the protective support sleeve, so that the mounting and dismounting work of the protective support sleeve and the supporting disc is facilitated.

In a preferred embodiment, the top end of the supporting disk is fixedly connected with a protective rubber pad, the protective rubber pad is movably sleeved outside the fixed connection handle, and the protective rubber pad is fixed at the top end of the supporting disk, so that the friction force between the supporting disk and the drilling tool clamping mechanism is increased, and the probability of rotation of the fixed connection handle in the clamping mechanism is reduced.

In a preferred embodiment, the diameter of the circumscribed circle of the square of the fixed stem cross-section is equal to the diameter of the cross-section circle of the twist drill body, and by making the diameter of the circumscribed circle of the square of the fixed stem cross-section equal to the diameter of the cross-section circle of the twist drill body, it is convenient to sleeve the protective sleeve on the outside of the fixed stem and connect the fixed stem to the clamping mechanism of the drill.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a make the fixed connection handle be connected with the fixture of drilling tool, when receiving great resistance among the fluted drill main part drilling process, can prevent to carve the size sign at the fixed connection handle outer wall by wearing and tearing, guaranteed fluted drill main part size's distinguishable degree.

2. The utility model discloses a to protect the branch cover cup joint in the outside of fixed connection handle, make the outer wall of switching platform and the inner wall in connecting handle groove laminate all the time with the help of supporting spring between supporting disk and protection branch cover, guaranteed the fluted drill main part at the drilling during operation, the anti-shear capacity of fixed connection handle and switching platform tie point.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the connection structure of the adapting table, the fixed connecting handle and the twist drill main body;

FIG. 3 is a schematic view of the expanded structure of the supporting plate and the protective support sleeve of the present invention;

FIG. 4 is an enlarged schematic view of the part A of FIG. 3 according to the present invention;

fig. 5 is a schematic view of the protective support sleeve of the present invention.

The reference signs are: 1. a fixed connection handle; 2. a support disc; 3. a protective support sleeve; 4. a twist drill body; 5. a chip groove; 6. a transfer station; 7. positioning the loop bar; 8. a protective rubber pad; 9. a support spring; 10. positioning the slot; 11. a platform groove; 12. a connecting handle groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1 and 2 in the specification, the high-strength high-speed steel twist drill comprises a twist drill body 4, chip grooves 5 are machined in the two sides of the twist drill body 4, a switching table 6 is fixedly connected to the top end of the twist drill body 4, a fixed connecting handle 1 is fixedly connected to the top end of the switching table 6, size marks are carved on the outer wall of the top of the fixed connecting handle 1, the diameter of a circumscribed circle of a square of the cross section of the fixed connecting handle 1 is equal to the diameter of a cross section circle of the twist drill body 4, the diameter of the circumscribed circle of the square of the cross section of the fixed connecting handle 1 is equal to the diameter of the cross section circle of the twist drill body 4, and a protective support sleeve 3 is conveniently sleeved on the outer portion of the fixed connecting handle 1 and the fixed connecting handle 1 is connected with a clamping mechanism of a drilling tool.

The implementation scenario is specifically as follows:

in carrying out the utility model discloses an in the use, will protect the support 3 and cup joint in the outside of fixed connection handle 1, make fixed connection handle 1 arrange the fixture of drilling tool in, after accomplishing the centre gripping work of fixed connection handle 1, utilize fluted drill main part 4 to bore the hole of getting corresponding size on the target work piece, in drilling process, fluted drill main part 4 can receive the cutting resistance, be connected with drilling tool fixture because of fixed connection handle 1, can prevent that the size sign of sculpture at 1 outer wall of fixed connection handle from being worn and torn, guaranteed the recognizable degree of fluted drill main part 4 sizes, can not misuse the utility model discloses a condition.

Referring to the attached drawings 1 and 3-5 of the specification, the high-strength high-speed steel twist drill of the embodiment comprises a switching table 6, a protective support sleeve 3 is movably sleeved outside the switching table 6, a connecting handle groove 12 is formed in the bottom end of the protective support sleeve 3, the connecting handle groove 12 is matched with the switching table 6, a table groove 11 is formed in the top end of the protective support sleeve 3, the table groove 11 is communicated with the connecting handle groove 12, the fixed connecting handle 1 is movably connected inside the table groove 11, the connecting handle groove 12 and the table groove 11 are formed in the protective support sleeve 3, so that the protective support sleeve 3 is convenient to increase the shearing resistance after the fixed connecting handle 1 is connected with a twist drill main body 4, a support plate 2 is arranged at the top of the protective support sleeve 3, a protective rubber pad 8 is fixedly connected to the top end of the support plate 2, the protective rubber pad 8 is movably sleeved outside the fixed connecting handle 1, and the protective rubber pad 8 is fixed to the top end of the support plate 2, the friction force between a supporting disk 2 and a drilling tool clamping mechanism is favorably increased, the probability of rotation of a fixed connecting handle 1 in the clamping mechanism is reduced, the supporting disk 2 is movably sleeved outside the fixed connecting handle 1, the front surface, the back surface and two sides of the bottom end of the supporting disk 2 are fixedly connected with positioning loop bars 7, the front surface, the back surface and two sides of the top end of a protection support sleeve 3 are respectively provided with a positioning slot 10, the positioning loop bars 7 are movably inserted inside the positioning slots 10, the outside of the positioning loop bars 7 are movably sleeved with supporting springs 9, the supporting springs 9 are supported between the supporting disk 2 and the protection support sleeve 3, after a protection rubber pad 8 at the top of the supporting disk 2 is contacted with a drilling tool, the inner wall of a connecting handle groove 12 is attached to the inner wall of a switching table 6, the top ends of the supporting springs 9 are fixedly connected with the bottom end of the supporting disk 2, and the bottom ends of the supporting springs 9 are fixedly connected with the top end of the protection support sleeve 3, the supporting disk 2 and the protection branch sleeve 3 can be integrally formed by fixing the supporting spring 9 between the supporting disk 2 and the protection branch sleeve 3, so that the protection branch sleeve 3 and the supporting disk 2 can be conveniently mounted and dismounted.

The implementation scene is specifically as follows:

in carrying out the utility model discloses an in the use, through cup jointing protection branch cover 3 in the outside of fixed connection handle 1, be connected the back with the fixture of fixed connection handle 1 with the drilling tool, can make the outer wall of switching platform 6 and the inner wall of connecting handle groove 12 laminate all the time with the help of supporting spring 9 between supporting disk 2 and protection branch cover 3, after protection cushion 8 and drilling tool fixture contact, guaranteed to utilize fluted drill main part 4 when drilling on the target work piece, the anti-shear capacity of fixed connection handle 1 and switching platform 6 tie point, avoid the cracked condition to appear in fixed connection handle 1.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high-speed steel twist drill of high strength, includes twist drill main part (4), its characterized in that: chip groove (5) have all been processed to the inside of fluted drill main part (4) both sides, the top fixedly connected with switching platform (6) of fluted drill main part (4), top fixedly connected with fixed connection handle (1) of switching platform (6), the top outer wall sculpture of fixed connection handle (1) has the size sign, protection branch cover (3) have been cup jointed in the outside activity of switching platform (6).

2. A high strength, high speed steel twist drill according to claim 1, wherein: the protection support sleeve is characterized in that a connecting handle groove (12) is formed in the bottom end of the protection support sleeve (3), the connecting handle groove (12) is matched with the switching table (6), a table groove (11) is formed in the top end of the protection support sleeve (3), the table groove (11) is communicated with the connecting handle groove (12), and the fixed connecting handle (1) is movably connected to the inside of the table groove (11).

3. A high strength, high speed steel twist drill according to claim 1, wherein: the top of protection brace (3) is provided with supporting disk (2), the outside at fixed connection handle (1) is cup jointed in supporting disk (2) activity, the front and the back and the equal fixedly connected with location loop bar (7) in both sides of supporting disk (2) bottom, location slot (10) have all been seted up to the front and the back and both sides on protection brace (3) top, location loop bar (7) activity is pegged graft in the inside of location slot (10), supporting spring (9) have been cup jointed in the outside activity of location loop bar (7).

4. A high strength, high speed steel twist drill according to claim 3, wherein: the top end of the supporting spring (9) is fixedly connected with the bottom end of the supporting disc (2), and the bottom end of the supporting spring (9) is fixedly connected with the top end of the protective support sleeve (3).

5. A high strength, high speed steel twist drill according to claim 3, wherein: the top fixedly connected with of supporting disk (2) protects cushion (8), protect cushion (8) activity cup joints in the outside of fixed connection handle (1).

6. A high strength, high speed steel twist drill according to claim 1, wherein: the diameter of the circumscribed circle of the square section of the fixed connecting handle (1) is equal to the diameter of the section circle of the twist drill body (4).