CN213646000U - Drill bit with adjustable drilling depth - Google Patents
Drill bit with adjustable drilling depth Download PDFInfo
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- CN213646000U CN213646000U CN202022288344.0U CN202022288344U CN213646000U CN 213646000 U CN213646000 U CN 213646000U CN 202022288344 U CN202022288344 U CN 202022288344U CN 213646000 U CN213646000 U CN 213646000U
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Abstract
The utility model relates to a drill bit with adjustable drilling depth has solved among the prior art drill bit with adjustable self length, leads to the drill bit to use neither convenient problem when length adjustment. A drill bit with adjustable drilling depth comprises a drill bit and an extension drill rod, wherein the extension drill rod can vertically limit and move along the axial lead of the drill bit. The utility model rotates the adjusting screw after the locking sleeve is pulled out, the adjusting screw is meshed with the transmission screw, and the transmission screw is meshed with the toothed plate for transmission while rotating, so that the second arc plate and the first arc plate are driven to slide in a vertical direction in a limiting way, and the length of the drill body is adjusted; in the process of drilling by the drill bit, the drill bit is mainly stressed, the meshing force of the toothed plate and the transmission screw rod gives the supporting force for drilling by the drill bit, and the first arc plate and the second arc plate are clamped in a staggered manner and give the force for stable circumferential rotation of the drill bit; therefore, the drill bit with stable drilling and adjustable drilling depth is realized.
Description
Technical Field
The utility model relates to a drill bit with adjustable drilling depth.
Background
Most of the existing drilling or slotting is finished by installing a drill bit on equipment.
Most of the existing drill bit structures are fixed integrated structures, and drill bits with different lengths are provided with different models, so that when holes with different depths are required to be drilled, different drill bits need to be replaced, and the operation is complicated;
therefore, a drill with adjustable drilling depth is proposed, and a drill with a conveniently adjustable drilling depth is realized by arranging a combined drill structure, so that the usability and the applicability of the drill are improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a drill bit with adjustable drilling depth has solved and has lacked a drill bit with adjustable self length among the prior art, leads to the drill bit to use neither convenient problem when length adjustment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a drill bit with adjustable drilling depth comprises a drill bit and an extension drill rod, wherein the extension drill rod can move along the vertical limit of the axial lead of the drill bit so as to adjust the length of the drill bit, a first inner concave cavity is formed in the top end of the drill bit, a plurality of first arc plates are arranged on a top end annular array of the drill bit, toothed plates which correspond to the first arc plates and are fixedly connected are arranged on the annular array in the first inner concave cavity, a second inner concave cavity is formed in the bottom end of the extension drill rod, a second arc plate is arranged on a bottom end annular array of the extension drill rod, two sides of each second arc plate slide with the vertical limit of the first arc plates on two sides, a transmission screw rod which is meshed with the toothed plates for transmission is arranged in the second inner concave cavity, an adjusting screw rod which is in crossed fit with the transmission screw rod is arranged at the top of the extension drill rod, and a locking sleeve is arranged outside the adjusting screw rod so as to, and a bearing sleeve used for being installed with a motor is installed at the top end of the extension drill rod.
Preferably, the first arc plates of the annular array and the second arc plates of the annular array are spliced in a staggered mode to form a complete barrel wall structure, and the thicknesses of the first arc plates and the second arc plates are the same.
Preferably, the first arc plate and the second arc plate are attached to two end faces, sliding grooves are vertically formed in the two end faces, and sliding strips which are connected with the sliding grooves in a sliding mode are fixedly connected to the two sides of the second arc plate to limit vertical movement of the extension drill rod and the drill bit.
Preferably, the outer diameter of the barrel wall structure formed by splicing the first arc plate and the second arc plate is equal to the outer diameter of the drill bit and the outer diameter of the extension drill rod, and thread structures are arranged from the drill bit to the outer walls of the barrel wall structure and the outer walls of the extension drill rod.
Preferably, the top end of the transmission screw rod is installed with the inner wall of the second inner concave cavity through a bearing sleeve, the bottom end of the transmission screw rod is connected with the plurality of second arc plates through a connecting rod, and the transmission screw rod is provided with the bearing sleeve connected with the connecting rod.
Preferably, adjusting screw's one end and the inner wall installation of the interior concave cavity of second, the other end runs through outside extending the drilling rod, and has seted up the inner groovy on adjusting screw's the extension end outer wall, the lock sleeve cup joints at adjusting screw's extension end through the spacing slip of inner groovy, the annular array is installed and is extended the card of drilling rod outer wall joint on the lock sleeve and protruding to the circumference of injecing adjusting screw rotates.
The utility model discloses possess following beneficial effect at least:
1. after the locking sleeve is pulled out, the adjusting screw rod is rotated, the adjusting screw rod is in meshing transmission with the transmission screw rod, and the transmission screw rod is in meshing transmission with the toothed plate while rotating, so that the second arc plate and the first arc plate are driven to perform relative limiting sliding in the vertical direction, and the adjustment of the drill body length is realized; in the process of drilling by the drill bit, the drill bit is mainly stressed, the meshing force of the toothed plate and the transmission screw rod gives the supporting force for drilling by the drill bit, and the first arc plate and the second arc plate are clamped in a staggered manner and give the force for stable circumferential rotation of the drill bit; therefore, the drill bit with stable drilling and adjustable drilling depth is realized, and the usability and the applicability of the drill bit are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
FIG. 1 is a schematic front view of a drill bit configuration;
FIG. 2 is a schematic view of a length adjustment structure of the drill bit structure;
FIG. 3 is a schematic view of the structure of the extension drill rod and the drill bit;
FIG. 4 is a schematic cross-sectional view of a first interior cavity;
FIG. 5 is a cross-sectional view of a second arc plate;
fig. 6 is a cross-sectional view of the first arc plate and the second arc plate in a fitted state.
In the figure: 1. extending the drill pipe; 2. a drill bit; 3. adjusting the screw rod; 4. a locking sleeve; 5. a first inner concave cavity; 6. a first arc plate; 7. a chute; 8. a toothed plate; 9. a second inner concave cavity; 10. a drive screw; 11. a second arc plate; 12. and (4) a slide bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-6, a drill bit with adjustable drilling depth comprises a drill bit 2 and an extension drill rod 1, wherein the extension drill rod 1 can vertically move along the axial lead of the drill bit 2 in a limiting manner so as to adjust the length of the drill bit 2, a first inner concave cavity 5 is formed at the top end of the drill bit 2, a plurality of first arc plates 6 are arranged on a top end annular array of the drill bit 2, toothed plates 8 fixedly connected with the first arc plates 6 are arranged on the first inner concave cavity 5 in the annular array, a second inner concave cavity 9 is formed at the bottom end of the extension drill rod 1, a second arc plate 11 is arranged on a bottom end annular array of the extension drill rod 1, two sides of each second arc plate 11 vertically slide with the first arc plates 6 on two sides in a limiting manner, a transmission screw 10 meshed with the toothed plates 8 is arranged in the second inner concave cavity 9, an adjusting screw 3 in crossed fit with the transmission screw 10 is arranged at the top of the extension drill rod 1, a locking sleeve 4 is arranged outside the adjusting, to define the circumferential rotation of the adjusting screw 3, the top end of the extension rod 1 is fitted with a bearing housing for mounting with a motor.
Specifically, as shown in fig. 1-6, the first arc plate 6 of the annular array and the second arc plate 11 of the annular array are spliced in a staggered manner to form a complete barrel wall structure, the thicknesses of the first arc plate 6 and the second arc plate 11 are the same, the sliding grooves 7 are vertically formed in two end faces of the first arc plate 6, which are attached to the second arc plate 11, the sliding strips 12 which are slidably connected with the sliding grooves 7 are fixedly connected to two sides of the second arc plate 11, so as to limit the vertical movement of the extension drill rod 1 and the drill bit 2, the outer diameter of the barrel wall structure formed by splicing the first arc plate 6 and the second arc plate 11 is equal to the outer diameter of the drill bit 2 and the extension drill rod 1, and the outer walls of the drill bit 2 to the barrel wall structure and the extension drill rod 1 are provided with thread structures, so that the drill bit 2, the barrel wall structure and the extension drill rod 1 form a complete screw structure in a non-extended state.
Specifically, as shown in fig. 1 to 6, the top end of the drive screw 10 and the inner wall of the second inner cavity 9 are installed through a bearing sleeve, the bottom end of the drive screw 10 is connected with a plurality of second arc plates 11 through a connecting rod, and the drive screw 10 is provided with a bearing sleeve connected with the connecting rod, one end of the adjusting screw 3 and the inner wall of the second inner cavity 9 are installed, the other end of the adjusting screw penetrates through the extension drill rod 1, an inner groove is formed in the outer wall of the extension end of the adjusting screw 3, the locking sleeve 4 is sleeved on the extension end of the adjusting screw 3 through the inner groove in a limiting sliding manner, annular arrays are installed on the locking sleeve 4 to form a clamping protrusion clamped with the outer wall of the extension drill rod 1, so as to limit the circumferential rotation of the adjusting screw 3, the locking sleeve 4 is arranged, the circumferential rotation of the adjusting screw 3 is selectively limited, so that the adjusting.
The working principle is as follows:
when the device is used, after the locking sleeve 4 is pulled out, the adjusting screw rod 3 is rotated, the adjusting screw rod 3 is in meshing transmission with the transmission screw rod 10, the transmission screw rod 10 rotates and is in meshing transmission with the toothed plate 8, so that the second arc plate 11 and the first arc plate 6 are driven to perform relative limiting sliding in the vertical direction, the length of a drill body is adjusted, the drill body is used for drilling deep holes, after the extension drill rod 1 is stretched to a certain distance, the locking sleeve 4 is sleeved on the adjusting screw rod 3, and then the clamping protrusions in the annular array on the locking sleeve 4 are clamped with the outer wall of the extension drill rod 1 to limit the circumferential movement of the adjusting screw rod 3; the drill bit 2 and the extension drill rod 1 are made of the same material, in the process of drilling the hole by the drill bit 2, the drill bit 2 is mainly stressed, the meshing force of the toothed plate 8 and the transmission screw 10 provides the supporting force for drilling the hole by the drill bit 2, and the first arc plate 6 and the second arc plate 11 are clamped in a staggered mode to provide the force for stable circumferential rotation of the drill bit 2; thus, a drill bit 2 with stable drilling and adjustable drilling depth is realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The drill bit with the adjustable drilling depth is characterized by comprising a drill bit (2) and an extension drill rod (1), wherein the extension drill rod (1) can move along the vertical limit of the axis of the drill bit (2) so as to adjust the length of the drill bit (2), a first inner concave cavity (5) is formed in the top end of the drill bit (2), a plurality of first arc plates (6) are arranged on the top end annular array of the drill bit (2), a toothed plate (8) fixedly connected with the first arc plates (6) correspondingly is arranged in the first inner concave cavity (5), a second inner concave cavity (9) is formed in the bottom end of the extension drill rod (1), a second arc plate (11) is arranged on the bottom end annular array of the extension drill rod (1), two sides of each second arc plate (11) slide with the first arc plates (6) on two sides in a vertical limit mode, and a transmission screw (10) meshed with the toothed plates (8) is installed in the second inner concave cavity (9), the top of extending drilling rod (1) is installed and is criss-cross complex adjusting screw (3) with drive screw (10), adjusting screw (3) are installed outward and are locked sleeve (4) to the circumference of injecing adjusting screw (3) is rotated, the bearing housing that is used for with the motor installation is installed on the top of extending drilling rod (1).
2. The drill bit with the adjustable drilling depth as claimed in claim 1, wherein the first arc plates (6) of the annular array and the second arc plates (11) of the annular array are spliced in a staggered mode to form a complete barrel wall structure, and the thicknesses of the first arc plates (6) and the second arc plates (11) are the same.
3. The drill bit with the adjustable drilling depth as claimed in claim 1, wherein sliding grooves (7) are vertically formed in two end faces, which are attached to the first arc plate (6) and the second arc plate (11), and sliding strips (12) which are slidably connected with the sliding grooves (7) are fixedly connected to two sides of the second arc plate (11) so as to limit vertical movement of the extension drill rod (1) and the drill bit (2).
4. The drill bit with the adjustable drilling depth is characterized in that the outer diameter of a barrel wall structure formed by the first arc plate (6) and the second arc plate (11) is equal to the outer diameter of the drill bit (2) and the extension drill rod (1), and thread structures are arranged from the drill bit (2) to the barrel wall structure and the outer wall of the extension drill rod (1).
5. The drill bit with the adjustable drilling depth as claimed in claim 1, wherein the top end of the transmission screw rod (10) and the inner wall of the second inner concave cavity (9) are installed through a bearing sleeve, the bottom end of the transmission screw rod (10) is connected with the plurality of second arc plates (11) through a connecting rod, and the bearing sleeve connected with the connecting rod is installed on the transmission screw rod (10).
6. The drill bit with the adjustable drilling depth is characterized in that one end of the adjusting screw rod (3) is mounted with the inner wall of the second inner cavity (9), the other end of the adjusting screw rod penetrates out of the extension drill rod (1), an inner groove is formed in the outer wall of the extension end of the adjusting screw rod (3), the locking sleeve (4) is sleeved on the extension end of the adjusting screw rod (3) in a limiting sliding mode through the inner groove, and clamping protrusions clamped with the outer wall of the extension drill rod (1) are mounted on the locking sleeve (4) in an annular array mode to limit circumferential rotation of the adjusting screw rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022288344.0U CN213646000U (en) | 2020-10-15 | 2020-10-15 | Drill bit with adjustable drilling depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022288344.0U CN213646000U (en) | 2020-10-15 | 2020-10-15 | Drill bit with adjustable drilling depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213646000U true CN213646000U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022288344.0U Active CN213646000U (en) | 2020-10-15 | 2020-10-15 | Drill bit with adjustable drilling depth |
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| Country | Link |
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| CN (1) | CN213646000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664260A (en) * | 2021-07-29 | 2021-11-19 | 张慧敏 | Drilling equipment with automatic drilling depth control function |
-
2020
- 2020-10-15 CN CN202022288344.0U patent/CN213646000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664260A (en) * | 2021-07-29 | 2021-11-19 | 张慧敏 | Drilling equipment with automatic drilling depth control function |
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