CN217344194U

CN217344194U - Drill bit

Info

Publication number: CN217344194U
Application number: CN202220402597.2U
Authority: CN
Inventors: 林昌财; 周东
Original assignee: Yueqing Furong Tool No1 Factory
Current assignee: Yueqing Furong Tool No1 Factory
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-09-02
Anticipated expiration: 2032-02-25

Abstract

The application relates to the technical field of cutting means, discloses a drill bit, and it includes the drilling rod and sets up the cutting sword at the drilling rod head, the drilling rod head is seted up and is supplied the mounting groove that the cutting sword stretched into, the spacing groove has been seted up on the cell wall of mounting groove, the spacing groove extends to the direction of drilling rod along the cutting sword assembly, be provided with the spacing in can imbedding the spacing groove on the cutting sword. The drill rod assembly has the advantages that the relative movement between the cutting knife and the drill rod can be reduced, so that the cutting knife can be accurately assembled to the center of the head of the drill rod.

Description

Drill bit

Technical Field

The present application relates to the field of cutting tools, and more particularly, to a drill bit.

Background

The drill bit is a tool for drilling, and comprises a drill rod and a cutting knife arranged at the head of the drill rod, wherein the head of a drill piece is provided with a mounting groove for the cutting knife to extend into, and the cutting knife extends into the mounting groove and is fixed on the drill rod.

The current drill bit processing process is as follows: firstly milling the surface of the drill rod through a milling device, then extending the cutting knife into the mounting groove, and finally welding the drill rod with the cutting knife, so that the cutting knife is welded and fixed on the drill rod.

In view of the above-described related art, the inventors consider that the following drawbacks exist: in the process of welding the drill rod provided with the cutting knife, the cutting knife and the drill rod are easy to move relatively, so that the cutting knife deviates from the center of the head of the drill rod, and the drill bit is difficult to use and needs to be improved.

SUMMERY OF THE UTILITY MODEL

To reduce relative movement between the cutters and the drill rod, the present application provides a drill bit.

The application provides a drill bit adopts following technical scheme:

a drill bit comprises a drill rod and a cutting knife arranged at the head of the drill rod, wherein a mounting groove for the cutting knife to extend into is formed in the head of the drill rod, a limiting groove is formed in the wall of the mounting groove, the limiting groove extends in the direction that the cutting knife is assembled to the drill rod, and a limiting strip capable of being embedded into the limiting groove is arranged on the cutting knife.

Through adopting above-mentioned technical scheme, stretch into the mounting groove with the cutting sword in, spacing embedding spacing groove simultaneously, under the blockking of spacing groove cell wall, be difficult for taking place relative movement along the length direction of the spacing strip of perpendicular to between cutting sword and the drilling rod, make the cutting sword be difficult for deviating from the central point of drilling rod head and put to make the position of cutting sword assembly to the drilling rod more accurate.

Optionally, a plurality of anti-slip grooves are formed in the groove wall of the mounting groove, and a plurality of anti-slip bumps capable of being embedded into the respective adjacent anti-slip grooves are formed in the cutting knife.

By adopting the technical scheme, when the cutting knife is assembled on the drill rod, the anti-skid convex points are embedded into the respective adjacent anti-skid grooves, and the anti-skid grooves play a certain limiting role in the anti-skid convex points, so that the cutting knife and the drill rod are relatively fixed.

Optionally, a positioning groove communicated with the mounting groove is formed in the drill rod, and a positioning column penetrates through the positioning groove.

Through adopting above-mentioned technical scheme, the setting of reference column can block that the cutting sword is deviate from the mounting groove to the one side of keeping away from the drilling rod to improve the stability that cutting sword and drilling rod are connected.

Optionally, one side fixedly connected with turning block that the reference column is close to the constant head tank diapire, set up the sliding tray that supplies the turning block to slide and wear to establish on the lateral wall of constant head tank, the extending direction of sliding tray is the same with the extending direction of constant head tank, set up on the diapire of constant head tank and supply the turning block to rotate the rotation groove that stretches into, rotation groove and sliding tray intercommunication.

Through adopting above-mentioned technical scheme, when assembling the reference column to the drill bit, stretch into the constant head tank with the reference column earlier in, the turning block can slide to the bottom of constant head tank and stretch into the rotation inslot along the extending direction of sliding tray this moment, rotates the reference column after that and makes the turning block rotate to the rotation inslot, under blockking of rotation groove cell wall, the reference column is difficult for deviating from to the turning block to make the reference column be difficult for deviating from the locating hole.

Optionally, the reference column is kept away from the one end nestification of turning block and is had the actuating lever, can slide along the extending direction of actuating lever between reference column and the actuating lever, the lateral wall fixedly connected with fixed block of reference column is kept away from to the actuating lever, the fixed block can slide and wear to establish in the sliding tray, the fixed block sets up with the turning block along the length direction dislocation of actuating lever.

Through adopting above-mentioned technical scheme, when establishing the actuating lever on the reference column, rotate the actuating lever and make fixed block and sliding tray align, then impress the fixed block in the sliding tray, the cell wall of sliding tray can block the fixed block and rotate for the actuating lever is difficult for taking place to rotate. Under the action of friction force between the driving rod and the positioning column, the positioning column is not easy to rotate, so that the rotating block is not easy to separate from the rotating groove.

Optionally, a connecting groove for embedding the positioning column is formed in one end, close to the positioning column, of the driving rod, a rotation limiting groove is formed in the groove wall of the connecting groove, the extending direction of the rotation limiting groove is the same as the length direction of the driving rod, and a rotation limiting strip extending into the rotation limiting groove is arranged on the side wall, close to the driving rod, of the positioning column.

Through adopting above-mentioned technical scheme, when the actuating lever cover was established on the reference column, the limit commentaries on classics strip can stretch into in the limit commentaries on classics groove, and the cell wall in limit commentaries on classics groove can block the limit commentaries on classics strip and deviate from the limit commentaries on classics groove to make difficult emergence relative rotation between actuating lever and the reference column.

Optionally, the reference column is provided with elastic fixture block on being close to the circumference lateral wall of actuating lever, set up the spread groove that supplies the reference column embedding on the actuating lever, set up first draw-in groove and the second draw-in groove that supplies the fixture block card to go into on the cell wall of spread groove, first draw-in groove is located the one end that the actuating lever is close to the reference column, the second draw-in groove is located the one end that the reference column was kept away from to the actuating lever, works as when the fixed block stretches into the sliding tray, the fixture block card is gone into in the second draw-in groove.

Through adopting above-mentioned technical scheme, when the fixture block card on the actuating lever was gone into in the first draw-in groove, the fixed block was located outside the sliding tray, conveniently rotated the actuating lever this moment, when rotated actuating lever to fixed block and when the sliding tray aligns, promoted the actuating lever to one side that is close to the reference column for the fixed block stretches into in the sliding tray, and in the fixture block card was gone into the second draw-in groove this moment, thereby realized the relative fixation of actuating lever and reference column.

Optionally, a fixing groove for a screwdriver to extend into is formed in the end face, far away from the positioning column, of the driving rod.

Through adopting above-mentioned technical scheme, when rotating the actuating lever, can stretch into the screwdriver in the fixed slot, rotate the actuating lever through rotating the fixed slot, it is easy and simple to handle.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the cutting knife extends into the mounting groove, the limiting strip is embedded into the limiting groove, relative movement between the cutting knife and the drill rod along the length direction perpendicular to the limiting strip is not prone to occurring under the blocking of the wall of the limiting groove, the cutting knife is not prone to deviating from the center of the head of the drill rod, and therefore the position of the cutting knife assembled to the drill rod is accurate;

2. when the cutting knife is assembled on the drill rod, the anti-skid convex points are embedded into the respective adjacent anti-skid grooves, and the anti-skid grooves play a certain limiting role on the anti-skid convex points, so that the cutting knife and the drill rod are relatively fixed.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic diagram highlighting a partial explosion of a cartridge in an embodiment of the present application.

Fig. 3 is a schematic partial cross-sectional view of an embodiment of the present application.

Fig. 4 is a partially exploded view highlighting the first card slot in the embodiment of the present application.

Description of the reference numerals:

1. drilling a rod; 11. mounting grooves; 111. a limiting groove; 112. an anti-slip groove; 12. positioning a groove; 121. a sliding groove; 122. a rotating groove; 2. a cutting blade; 21. a limiting strip; 22. anti-skid bumps; 3. a positioning column; 31. rotating the block; 32. a rotation limiting bar; 33. a clamping block; 4. a drive rod; 41. connecting grooves; 411. a rotation limiting groove; 412. a first card slot; 413. a second card slot; 42. a fixed block; 43. and (7) fixing the grooves.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a drill bit. Referring to fig. 1 and 2, the drill bit includes a drill rod 1 and a cutting blade 2, a mounting groove 11 for the cutting blade 2 to extend into is formed in the head of the drill rod 1, and the cutting blade 2 is primarily fixed on the drill rod 1 after extending into the mounting groove 11. All seted up spacing groove 111 on 11 relative two cell walls in mounting groove, spacing groove 111 extends to the direction of drilling rod 1 along cutting sword 2 assembly, and two relative lateral walls of cutting sword 2 all are provided with the spacing 21 that can imbed in adjacent spacing groove 111 separately. When the cutting blade 2 is assembled on the drill rod 1, the two limiting strips 21 are respectively embedded into the adjacent limiting grooves 111, and the groove walls of the limiting grooves 111 can block the relative movement between the cutting blade 2 and the drill rod 1, so that the cutting blade 2 is not easy to deviate from the center position of the drill head.

Referring to fig. 2, a plurality of anti-slip grooves 112 are formed on the wall of the mounting groove 11, and a plurality of anti-slip protrusions 22 capable of being embedded into the respective adjacent anti-slip grooves 112 are formed on the cutting blade 2. When the cutting blade 2 extends into the mounting groove 11, the anti-slip bumps 22 can be embedded into the adjacent anti-slip grooves 112, so that the cutting blade 2 is not easy to drop out of the mounting groove 11, and the connection stability between the cutting blade 2 and the drill rod 1 is improved.

Referring to fig. 2 and 3, in order to further enhance the stability of the connection between the cutting blade 2 and the drill rod 1, a positioning groove 12 communicated with the mounting groove 11 is formed on the drill rod 1, and a positioning column 3 is arranged in the positioning groove 12 in a penetrating manner. The circumference lateral wall integrated into one piece that reference column 3 is close to constant head tank 12 diapire one side has turning block 31, offers the sliding tray 121 that supplies turning block 31 to slide to wear to establish on the lateral wall of constant head tank 12, and the extending direction of sliding tray 121 is the same with the extending direction of constant head tank 12. The bottom wall of the positioning groove 12 is provided with a rotating groove 122 for the rotating block 31 to rotate and extend into, the inner diameter of the rotating groove 122 is larger than the maximum distance from the rotating block 31 to the central axis of the positioning column 3, and the rotating groove 122 is communicated with the sliding groove 121. When the positioning column 3 stretches into the positioning groove 12, the rotating block 31 firstly slides to penetrate through the sliding groove 121 and then stretches into the rotating groove 122, the positioning column 3 is rotated at the moment, the rotating block 31 can be rotated into the rotating groove 122, and the positioning column 3 is not easy to separate from the positioning groove 12 under the blocking of the wall of the rotating groove 122.

Referring to fig. 2 and 4, in order to make the connection between reference column 3 and drilling rod 1 more firm, the one end nested that the turning block 31 was kept away from to reference column 3 has a drive lever 4, and the connecting groove 41 that supplies the reference column 3 embedding is seted up to the one end that drive lever 4 is close to reference column 3, has seted up six restricted rotating groove 411 on the cell wall of connecting groove 41, and six restricted rotating groove 411 are the equal to the distribution along the inner wall of connecting groove 41, and the extending direction of restricted rotating groove 411 is the same with the length direction of drive lever 4. The side wall of the positioning column 3 close to the driving rod 4 is provided with six rotation limiting strips 32 extending into the adjacent rotation limiting slots 411, and the rotation limiting strips 32 can slide along the extending direction of the rotation limiting slots 411.

Referring to fig. 2 and 4, the fixing block 42 is integrally formed on the circumferential side wall of the driving rod 4 away from the positioning column 3, the fixing block 42 can be slidably inserted into the sliding groove 121, the fixing block 42 and the rotating block 31 are circumferentially and uniformly distributed along the length direction of the driving rod 4, and in other embodiments, the fixing block 42 and the rotating block 31 are only required to be arranged along the length direction of the driving rod 4 in a staggered manner.

Referring to fig. 2 and 3, establish actuating lever 4 cover on reference column 3 and stretch into in the spread groove 41, when turning block 31 stretches into and rotates in the groove 122, it makes turning block 31 spacing at spacing inslot 111 to rotate actuating lever 4, fixed block 42 corresponds with the opening of sliding tray 121 simultaneously, press actuating lever 4 to the one side that is close to reference column 3 this moment, fixed block 42 can imbed in the sliding tray 121, make actuating lever 4 and reference column 3 difficult emergence rotation, thereby make reference column 3 difficult emergence spread groove 41 of deviating from, realize the fixed between reference column 3 and the drilling rod 1.

Referring to fig. 2 and 4, in order to reduce the occurrence of the situation that the driving rod 4 is separated from the positioning column 3, an elastic clamping block 33 is disposed on the circumferential side wall of the positioning column 3 close to the driving rod 4, a first clamping groove 412 and a second clamping groove 413 for the clamping block 33 to be clamped are disposed on the wall of the connecting groove 41, the first clamping groove 412 is located at one end of the driving rod 4 close to the positioning column 3, the second clamping groove 413 is located at one end of the driving rod 4 far away from the positioning column 3, and when the fixing block 42 extends into the sliding groove 121, the clamping block 33 is clamped into the second clamping groove 413 and is in clamping fit with the second clamping groove 413. In order to facilitate the operation, a fixing groove 43 for a screwdriver to extend into is formed in the end face, away from the positioning column 3, of the driving rod 4, the cross section of the fixing groove 43 can be in a shape like a straight line or a cross shape, in this embodiment, the cross section of the fixing groove 43 is in a shape like a cross, and an operator can rotate the driving rod 4 by rotating the fixing groove 43.

The implementation principle of a drill bit of the embodiment of the application is as follows: when the drill bit is assembled, the cutting blade 2 firstly extends into the mounting groove 11, the limiting strip 21 is embedded into the limiting groove 111, and the anti-skidding salient points 22 extend into the anti-skidding grooves 112, so that the cutting blade 2 is preliminarily fixed at the head of the drill rod 1. Then, the positioning column 3 extends into the connecting groove 41 to be connected with the driving rod 4, and meanwhile, the rotation limiting strip 32 extends into the rotation limiting groove 411, and the clamping block 33 is clamped into the second clamping groove 413. Then, the positioning post 3 is inserted into the positioning groove 12, and the rotating block 31 is slid through the sliding groove 121 and then inserted into the rotating groove 122. Then, the driving lever 4 is rotated so that the fixing block 42 is aligned with the sliding groove 121, and finally, the driving lever 4 is pressed toward the side close to the positioning column 3 so that the fixing block 42 is inserted into the sliding groove 121, that is, the assembly is completed. The cutting knife 2 on the assembled drill bit and the drill rod 1 are not easy to move relatively, and the situation that the cutting knife 2 deviates from the center of the head of the drill rod 1 is not easy to occur when the drill bit is welded.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a drill bit, includes drilling rod (1) and sets up cutting sword (2) at drilling rod (1) head, drilling rod (1) head is seted up and is supplied mounting groove (11) that cutting sword (2) stretched into, its characterized in that: the drill rod drilling tool is characterized in that a limiting groove (111) is formed in the groove wall of the mounting groove (11), the limiting groove (111) extends in the direction that the cutting tool (2) is assembled to the drill rod (1), and a limiting strip (21) capable of being embedded into the limiting groove (111) is arranged on the cutting tool (2).

2. A drill bit according to claim 1, wherein: the cutting tool is characterized in that a plurality of anti-skidding grooves (112) are formed in the wall of the mounting groove (11), and a plurality of anti-skidding salient points (22) capable of being embedded into the adjacent anti-skidding grooves (112) are arranged on the cutting tool (2).

3. A drill bit according to claim 1, wherein: the drill rod (1) is provided with a positioning groove (12) communicated with the mounting groove (11), and a positioning column (3) penetrates through the positioning groove (12).

4. A drill bit according to claim 3, wherein: reference column (3) are close to one side fixedly connected with turning block (31) of constant head tank (12) diapire, offer on the lateral wall of constant head tank (12) and supply sliding tray (121) that turning block (31) slided and wear to establish, the extending direction of sliding tray (121) is the same with the extending direction of constant head tank (12), offer on the diapire of constant head tank (12) and supply turning block (31) to rotate rotation groove (122) that stretch into, rotation groove (122) and sliding tray (121) intercommunication.

5. A drill bit according to claim 4, characterized in that: the one end nestification that turning block (31) was kept away from in reference column (3) has actuating lever (4), can slide along the extending direction of actuating lever (4) between reference column (3) and actuating lever (4), lateral wall fixedly connected with fixed block (42) of reference column (3) are kept away from in actuating lever (4), fixed block (42) can slide and wear to establish in sliding tray (121), the length direction dislocation set of actuating lever (4) is followed with turning block (31) in fixed block (42).

6. A drill bit according to claim 5, characterized in that: the utility model discloses a spacing rotating groove, including actuating lever (4), driving lever (3), spacing rotating groove (411), the extending direction of spacing rotating groove (411) is the same with the length direction of actuating lever (4), the lateral wall that actuating lever (3) are close to actuating lever (3) is provided with the spacing rotating strip (32) that stretch into in the spacing rotating groove (411), the connecting groove (41) that supply reference lever (3) embedding are seted up to the one end that actuating lever (4) is close to, set up on the cell wall of connecting groove (41), the extending direction of spacing rotating groove (411) is the same with the length direction of actuating lever (4), the lateral wall that actuating lever (3) are close to is provided with.

7. A drill bit according to claim 5, characterized in that: reference column (3) are close to and are provided with elastic fixture block (33) on the circumference lateral wall of actuating lever (4), set up on actuating lever (4) and supply connection groove (41) of reference column (3) embedding, set up first draw-in groove (412) and second draw-in groove (413) that supply fixture block (33) card to go into on the cell wall of connection groove (41), first draw-in groove (412) are located actuating lever (4) and are close to the one end of reference column (3), second draw-in groove (413) are located actuating lever (4) and keep away from the one end of reference column (3), work as when fixed block (42) stretch into sliding tray (121), fixture block (33) card is gone into in second draw-in groove (413).

8. A drill bit according to claim 5, characterized in that: and a fixing groove (43) for a screwdriver to extend into is formed in the end face, away from the positioning column (3), of the driving rod (4).