CN201669449U - Flat-bottom counter bit - Google Patents
Flat-bottom counter bit Download PDFInfo
- Publication number
- CN201669449U CN201669449U CN201020198835XU CN201020198835U CN201669449U CN 201669449 U CN201669449 U CN 201669449U CN 201020198835X U CN201020198835X U CN 201020198835XU CN 201020198835 U CN201020198835 U CN 201020198835U CN 201669449 U CN201669449 U CN 201669449U
- Authority
- CN
- China
- Prior art keywords
- blade
- apex point
- bit
- flat
- taper shank
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a flat-bottom counter bit, which is in a split structure and comprises a bit point blade (1), a fastening screw (2), a positioning screw (3) and a morse taper shank (4). The bit point blade (1) is fixed onto the morse taper shank (4) by the aid of the fastening screw (2) and the positioning screw (3), a blade edge of the bit point blade (1) is linear, and a rotary surface with a diameter of 1.5 millimeters and inclination of 10 degrees is reserved on a bit point portion of the bit point blade (1). The flat-bottom counter bit has the advantages of simple and practical blade edge structure, stable blade feeding, light and speedy cutting, adoption of the split structure, convenient and speedy clamping and interchanging, high adaptability and high production efficiency.
Description
Technical field
The utility model relates to a kind of counterbit, especially counterbore.
Background technology
The flat deep hole of processing generally is to use earlier Twist Drill at present, again with cotter mill cutter or fluted drill is polished apex point comes the machining hole baseplane, this processing method length that expends time in, number of changing knife is many, troublesome poeration, and process flat of poor quality, be easy to occur shaggy circular small boss or circular little groove at flat center.
Summary of the invention
The purpose of this utility model promptly is to overcome the deficiencies in the prior art, provides in a kind of use cutting brisk, the counterbore of machined surface quality, and its convenient mounting and clamping, quick helps enhancing productivity, and reduces production costs.
The purpose of this utility model is achieved through the following technical solutions: counterbore, and it comprises the apex point blade for dividing body structure, trip bolt, dog screw and Morse taper shank, the apex point blade is fixed on the Morse taper shank by trip bolt and dog screw.Apex point blade angle of throat is a straight line, and apex point partly leaves 10 ° diameter 1.5mm plane of rotation.
Compare with traditional counterbit, the utility model adopts and divides body structure, installing the back relies on the Morse taper shank of cutter hub to be connected use with lathe, the counterbit that same cutter hub can assemble different-diameter is processed the straight hole in different apertures, and process time of tool change time and workpiece has been saved in the baseplane of simultaneously can ream portalling.
By top narration as can be seen, the beneficial effects of the utility model are: edge structure is simple and practical, and feed is steady, cut briskly, and centre, processed hole is very smooth smooth, divides a body structure owing to adopt, clamping exchanges convenient and swift, applicability height, production efficiency height.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram
Fig. 2 is the utility model apex point blade structure schematic diagram
Among the figure, 1-apex point blade, 2-trip bolt, 3-dog screw, 4-Morse taper shank, 5-plane of rotation
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1, counterbore, it is for dividing body structure, comprise apex point blade 1, trip bolt 2, dog screw 3 and Morse taper shank 4, apex point blade 1 is fixed on the Morse taper shank 4 by trip bolt 2 and dog screw 3, compare with traditional counterbit, the utility model adopts and divides body structure, install the back and rely on the Morse taper shank of cutter hub to be connected use with lathe, in the use, the counterbit that same cutter hub can assemble different-diameter is processed the straight hole in different apertures, and the baseplane of simultaneously can ream portalling, can select the high-speed steel apex point also can select the carbide alloy apex point according to the performance of machined material, apex point uses the wearing and tearing back only to need apex point is partly changed or reconditioning is reused, and it is convenient and swift to change the apex point part, single apex point part reconditioning is very simple and convenient, so just saved production cost widely, clamping exchanges convenient, has saved tool change time.As shown in Figure 2, apex point blade 1 angle of throat is a straight line, and apex point partly leaves 10 ° the diameter 1.5mm plane of rotation 5 of tilting, and process time of workpiece has been saved in the baseplane of can ream in boring portalling.
Claims (2)
1. counterbore is characterized in that: it comprises apex point blade (1) for dividing a body structure, trip bolt (2), and dog screw (3) and Morse taper shank (4), apex point blade (1) is fixed on the Morse taper shank (4) by trip bolt (2) and dog screw (3).
2. counterbore according to claim 1 is characterized in that: described apex point blade (1) angle of throat is a straight line, and apex point partly leaves 10 ° diameter 1.5mm plane of rotation (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020198835XU CN201669449U (en) | 2010-05-20 | 2010-05-20 | Flat-bottom counter bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020198835XU CN201669449U (en) | 2010-05-20 | 2010-05-20 | Flat-bottom counter bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201669449U true CN201669449U (en) | 2010-12-15 |
Family
ID=43326861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020198835XU Expired - Fee Related CN201669449U (en) | 2010-05-20 | 2010-05-20 | Flat-bottom counter bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201669449U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717105A (en) * | 2012-06-14 | 2012-10-10 | 江苏双良锅炉有限公司 | Reverse chamfering tool rest for pipe holes of boiler drums |
| CN104858461A (en) * | 2015-05-18 | 2015-08-26 | 广西玉柴机器股份有限公司 | Conical handle tool preventing tool from getting loose and disengaging |
-
2010
- 2010-05-20 CN CN201020198835XU patent/CN201669449U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717105A (en) * | 2012-06-14 | 2012-10-10 | 江苏双良锅炉有限公司 | Reverse chamfering tool rest for pipe holes of boiler drums |
| CN104858461A (en) * | 2015-05-18 | 2015-08-26 | 广西玉柴机器股份有限公司 | Conical handle tool preventing tool from getting loose and disengaging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20150520 |
|
| EXPY | Termination of patent right or utility model |