CN215845901U - Core-retaining drill - Google Patents
Core-retaining drill Download PDFInfo
- Publication number
- CN215845901U CN215845901U CN202122205078.5U CN202122205078U CN215845901U CN 215845901 U CN215845901 U CN 215845901U CN 202122205078 U CN202122205078 U CN 202122205078U CN 215845901 U CN215845901 U CN 215845901U
- Authority
- CN
- China
- Prior art keywords
- cutter
- cutter body
- cylindrical
- cylindrical cutter
- chip guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model relates to a core-remaining drill, which comprises a cylindrical cutter body and a cutter handle concentrically fixed at the lower end of the cylindrical cutter body, wherein a counter bore is formed in the center of the upper end of the cylindrical cutter body, a plurality of spiral chip guide grooves which are uniformly distributed along the circumferential direction at equal angles are formed in the outer wall of the cylindrical cutter body, the upper end of each spiral chip guide groove is opened and is communicated with the upper end of the cylindrical cutter body, and the plurality of spiral chip guide grooves form cutter seat blocks with the same number on the outer wall of the cylindrical cutter body; a plain noodles is formed on one side of the upper end of each cutter seat block, a cutter placing cavity is formed in each plain noodles, and a detachable cutter blade is fixed in each cutter placing cavity; the drilling device can complete the drilling of the large-diameter through hole only once, thereby greatly simplifying the operation to save time and labor, improving the processing efficiency and greatly reducing the labor intensity of workers.
Description
Technical Field
The utility model relates to a core-retaining drill.
Background
In the machining industry, drilling is a very common technological means, and in order to produce holes with various sizes, a machining workshop is often provided with drill bits with various sizes; when a through hole with a very large diameter needs to be drilled, a currently generally adopted method is to drill a small-diameter hole with the same central axis as the required large-diameter through hole by using a solid drill with a smaller diameter, and then drill the small-diameter hole by using a plurality of solid drills with successively increasing diameters until the required diameter is drilled.
SUMMERY OF THE UTILITY MODEL
In view of the current situation of the prior art, the utility model aims to provide a core-retaining drill which can complete the drilling of large-diameter through holes only once, thereby greatly simplifying the operation, saving time and labor, improving the processing efficiency and greatly reducing the labor intensity.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a core drill comprises a cylindrical cutter body and a cutter handle concentrically fixed at the lower end of the cylindrical cutter body, and is characterized in that a counter bore is formed in the center of the upper end of the cylindrical cutter body, a plurality of spiral chip guide grooves which are uniformly distributed in an equal angle along the circumferential direction are formed in the outer wall of the cylindrical cutter body, the upper end of each spiral chip guide groove is opened and is communicated with the upper end of the cylindrical cutter body, and the plurality of spiral chip guide grooves form cutter holder blocks with the same number on the outer wall of the cylindrical cutter body; one side of the upper end of each cutter holder block is provided with a flat cutting surface, a cutter placing cavity is formed in each flat cutting surface, the upper side of each cutter placing cavity is provided with an opening and communicated with the upper end of each cutter holder block, each cutter placing cavity is internally provided with a detachable blade, and the inner side edge of the opening at the upper end of each spiral chip guide groove is provided with a notch groove.
Preferably, each blade is also provided with a screw in an inserted manner, and the threaded end of each screw is inserted into and screwed into the bottom of a corresponding blade placing cavity.
Compared with the prior art, the utility model has the advantages that: the drilling device can complete the drilling of the large-diameter through hole only once, thereby greatly simplifying the operation to save time and labor, improving the processing efficiency and greatly reducing the labor intensity of workers.
Drawings
Fig. 1 is a top view of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the utility model have been omitted.
As shown in fig. 1, a core drill comprises a cylindrical cutter body 1 and a cutter handle 2 concentrically fixed at the lower end of the cylindrical cutter body 1, wherein a counter bore 11 is formed in the center of the upper end of the cylindrical cutter body 1, a plurality of spiral chip guide grooves 12 which are uniformly distributed along the circumferential direction at equal angles are formed in the outer wall of the cylindrical cutter body 1, the upper end of each spiral chip guide groove 12 is open and is mutually communicated with the upper end of the cylindrical cutter body 1, and the plurality of spiral chip guide grooves 12 form cutter holder blocks 13 with the same number on the outer wall of the cylindrical cutter body 1; one side of the upper end of each cutter holder block 13 is provided with a flat cutting surface 14, a cutter placing cavity 15 is formed in each flat cutting surface 14, the upper side of each cutter placing cavity 15 is opened and communicated with the upper end of each cutter holder block 13, a detachable blade 3 is fixed in each cutter placing cavity 15, and the inner side edge of the opening of the upper end of each spiral chip guide groove 12 is provided with a notch groove 16.
Each blade 3 is also provided with a screw 4 in an inserted manner, and the threaded end of each screw 4 is inserted into and screwed with the bottom of a corresponding blade placing cavity 15.
When in use: the lower end of the tool shank 2 is inserted into a chuck fixed in a machine tool, and after the machine tool is started, a motor in the machine tool can drive the cylindrical tool body 1 to rotate by means of the chuck and the tool shank 2; then, the chuck is driven to feed towards the direction of the workpiece so that each blade 3 on the cylindrical cutter body 1 starts to drill the workpiece, an annular hole can be formed on the workpiece along with the continuous feeding of the cylindrical cutter body 1, a columnar inner core can be formed at the center of the annular hole and continuously extends into the counter bore 11, so that the cylindrical cutter body 1 can rotate around the columnar inner core and cannot deviate from the position, when the depth of the annular hole is continuously increased until the workpiece is penetrated, the drilling processing is finished, the columnar inner core can also fall along with the annular hole and always remain in the counter bore 11, and finally the columnar inner core is taken out; the chips generated in the drilling process are introduced into a corresponding one of the spiral chip guide grooves 12 through each of the cut grooves 16, and then discharged to the outside.
The drilling device can complete the drilling of the large-diameter through hole only once, thereby greatly simplifying the operation to save time and labor, improving the processing efficiency and greatly reducing the labor intensity of workers.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A core drill comprises a cylindrical cutter body and a cutter handle concentrically fixed at the lower end of the cylindrical cutter body, and is characterized in that a counter bore is formed in the center of the upper end of the cylindrical cutter body, a plurality of spiral chip guide grooves which are uniformly distributed in an equal angle along the circumferential direction are formed in the outer wall of the cylindrical cutter body, the upper end of each spiral chip guide groove is opened and is communicated with the upper end of the cylindrical cutter body, and the plurality of spiral chip guide grooves form cutter holder blocks with the same number on the outer wall of the cylindrical cutter body; one side of the upper end of each cutter holder block is provided with a flat cutting surface, a cutter placing cavity is formed in each flat cutting surface, the upper side of each cutter placing cavity is provided with an opening and communicated with the upper end of each cutter holder block, each cutter placing cavity is internally provided with a detachable blade, and the inner side edge of the opening at the upper end of each spiral chip guide groove is provided with a notch groove.
2. The core drill as claimed in claim 1, wherein a screw is inserted into each blade, and a threaded end of each screw is inserted and screwed into the bottom of a corresponding blade placing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205078.5U CN215845901U (en) | 2021-09-13 | 2021-09-13 | Core-retaining drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205078.5U CN215845901U (en) | 2021-09-13 | 2021-09-13 | Core-retaining drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215845901U true CN215845901U (en) | 2022-02-18 |
Family
ID=80320576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122205078.5U Active CN215845901U (en) | 2021-09-13 | 2021-09-13 | Core-retaining drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215845901U (en) |
-
2021
- 2021-09-13 CN CN202122205078.5U patent/CN215845901U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130058734A1 (en) | Combined drill and reamer tool | |
| CN101758275A (en) | Rotational cutting tool and combined machining method | |
| CN102922227B (en) | A kind of processing method in titanium alloy incline bench hole | |
| CN109604682B (en) | High-precision conical surface deep hole machining process for large-scale shielding motor temperature sensor sleeve | |
| CN215845901U (en) | Core-retaining drill | |
| CN106425592B (en) | A kind of skew wall drills the method for uniform deburring | |
| CN205816834U (en) | A kind of compound tool | |
| CN210548325U (en) | Drilling and milling cutter with integrally formed screw threads | |
| CN108788635B (en) | Method for machining taper hole by using taper hole cutter | |
| CN108127335B (en) | Method for machining taper pin hole | |
| CN201128015Y (en) | High-efficiency drill chamfering chuck | |
| CN216421177U (en) | Deep hole straight flute drill bit | |
| CN104057161A (en) | Internal thread tapper and tapping method thereof | |
| CN210587325U (en) | Four-in-one composite drill bit | |
| CN108098083A (en) | Combined tap and drill | |
| CN210677061U (en) | Drilling and countersinking milling integrated cutter shaft | |
| CN2923155Y (en) | Drilling-propelling complete machine | |
| JP2003266223A (en) | Deep hole processing method and drill for processing deep hole | |
| CN107398679A (en) | A kind of high speed rotating plate processing method | |
| CN216828810U (en) | Special drilling bit | |
| CN112372024A (en) | Method for machining deep hole with diameter more than 30 times by using inner-cooling drill bit | |
| CN201807749U (en) | Multifunctional combination turning tool | |
| CN212169104U (en) | Drilling and milling integrated cutter | |
| CN107931981A (en) | High speed rotating plate processing method | |
| CN215845905U (en) | Deep hole drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |