CN201046510Y - Tool apron replaceable drill bit - Google Patents
Tool apron replaceable drill bit Download PDFInfo
- Publication number
- CN201046510Y CN201046510Y CNU2007201463383U CN200720146338U CN201046510Y CN 201046510 Y CN201046510 Y CN 201046510Y CN U2007201463383 U CNU2007201463383 U CN U2007201463383U CN 200720146338 U CN200720146338 U CN 200720146338U CN 201046510 Y CN201046510 Y CN 201046510Y
- Authority
- CN
- China
- Prior art keywords
- tool rest
- drill bit
- drill body
- cutter
- drill
- 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 - Lifetime
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Abstract
The utility model relates to a drill for replacement of blade holder, comprising a drill bit body, more than one blade holders and more than one fixing bolts. The utility model is characterized in that more than one chute is arranged on the drill bit body, more than one joint hole is formed at the front end of the drill bit body and respectively communicated with the chute; the blade holder is arranged at the front end of the drill bit body and connected with the chute; a fixing hole arranged through the blade holder corresponding to the joint hole of the drill bit body and more than one cutter head are arranged on the blade holder; internal thread is arranged in the fixing hole, the cutter head is arranged at the front side of the blade holder and protruded out of the front end of blade holder and the front end of the drill bit; external thread corresponding to the internal thread of the fixing hole of the blade holder as well as a rotary part are arranged on the fixing bolt; the fixing bolt is locked in the joint hole of the drill bit body and the fixing hole of the blade holder, and the rotary part of the fixing bolt is positioned close to the peripheral surface of the drill bit body and not connected with the chute. The utility model has an advantage that damage to rotary part due to friction of cut chips and the rotary part can be avoided.
Description
Technical field
The utility model relates to a kind of drill bit, relates in particular to a kind of drill bit of replaceable tool rest, and it can avoid the set bolt of tool rest to damage in the bit cutting boring procedure.
Background technology
General drill bit is in order to be applied to cut the hole of different pore sizes, therefore develop and the drill bit that to change tool rest, tool rest and the cutter head that is incorporated on the tool rest by the different sizes of conversion, can change the drilling area of drill bit, and then can change the aperture of the hole of drill bit institute drilling, therefore more bit change can drilling goes out the hole of different pore sizes.
Yet, locking-type design before the drill bit of existing replaceable tool rest all adopts, tool rest is fixed in drill main body with a set bolt, the rotating part of set bolt such as cross counterbore or hexagonal counterbore are exposed in the cutter groove of drill main body, therefore when existing drill bit during in the operation of cutting boring, drill bit cuts the smear metal of getting off can produce friction with the rotating part of set bolt when effusion cutter groove, for a long time in the past, the rotating part of set bolt promptly may be by the wear-out failure of smear metal institute, this moment, set bolt promptly can't be pulled down from tool rest and drill body, tool rest also can't separate with drill body, and cause drill bit to lose the function of replaceable tool rest, and after the cutter head on the tool rest damages, put in order the group drill bit promptly must be changed, not only quite waste also significantly increases and makes processing cost.
The utility model content
Because the design of locking-type drill bit often causes the problem that the rotating part of set bolt damages easily before existing, main purpose of the present utility model is to provide a kind of drill bit of replaceable tool rest, it can avoid the rotating part of smear metal and set bolt to produce friction, and then keeps the replaceable function of tool rest.
For reaching the above object, the drill bit of replaceable tool rest of the present utility model comprises:
Drill body, it is provided with more than one cutter groove, the combined hole that the drill body front end is formed with more than and is communicated with the cutter groove respectively;
More than one tool rest, it is located at the drill body front end and joins with the cutter groove respectively, tool rest is provided with one and runs through tool rest and corresponding to the fixing hole and the more than one cutter head of drill body combined hole, fixing hole is provided with an internal thread, and cutter head is located at the front side of tool rest and is protruded in the front end of tool rest and the front end of drill body; And
More than one set bolt, it is provided with an external screw thread and a rotating part corresponding to the set internal thread of tool rest fixing hole, the set bolt screw lock is in the fixing hole of the combined hole of drill body and tool rest, and the rotating part of set bolt is positioned near the outer peripheral face place of drill body and does not join with the cutter groove.
Preferably, the drill body front end is formed with the engagement groove that is communicated with the cutter groove respectively more than, and combined hole is formed at the engagement groove bottom, and tool rest is located in the engagement groove.
Preferably, the drill bit of replaceable tool rest of the present utility model includes two tool rests, and drill body is provided with two cutter grooves and two engagement grooves, and tool rest is located at respectively in two engagement grooves.
Preferably, tool rest is provided with two cutter heads, and cutter head is located at the end face of tool rest.
Preferably, rotating part is provided with a hexagonal counterbore.
Because the rotating part of set bolt of the present utility model does not join with the cutter groove of drill body, therefore when using the utility model to carry out cutting operation, the smear metal of overflowing along the cutter groove can not produce friction with the rotating part of set bolt, therefore the rotating part of set bolt can not damage and cause set bolt to pull down, so the utility model still can be possessed the function that tool rest is changed after permanent use, can be applicable to cut in the hole operation in different apertures with cutter head by the tool rest of changing different sizes, avoid taking place cutter head and damage the situation that but can't change tool rest and must will put in order the group bit change-over, and then can save the manufacturing processing cost.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the utility model preferred embodiment.
Fig. 2 is the stereogram of the utility model preferred embodiment.
Fig. 3 is the vertical view of the utility model preferred embodiment.
Fig. 4 is the front sectional elevation of the utility model preferred embodiment.
The specific embodiment
Please refer to Fig. 1, Fig. 2 and shown in Figure 3, preferred embodiment of the present utility model comprises a drill body 10, more than one and be located at the tool rest 20 of drill body 10 front ends and more than one and be located at set bolt 30 in drill body 10 front ends and the tool rest 20, wherein:
The spiral cutter grooves 11 that drill body 10 is provided with more than one and axially is provided with along drill body 10, drill body 10 front ends are formed with the engagement groove 12 that is communicated with cutter groove 11 respectively more than, engagement groove 12 bottoms are formed with a combined hole 13 that is communicated with drill body 10 outer peripheral faces, in this preferred embodiment, drill body 10 is provided with two cutter grooves 11 and can reaches preferable cutting effect.
Please with further reference to Fig. 4, set bolt 30 is provided with an external screw thread corresponding to tool rest 20 fixing holes 21 set internal threads, and one in order to the rotation set bolt 30 rotating part 31, set bolt 30 by the outer peripheral face screw lock of drill body 10 in the fixing hole 21 of the combined hole 13 of drill body 10 and tool rest 20, and tool rest 20 screw locks are fixed in the engagement groove 12 of drill body 10, the rotating part 31 of set bolt 30 is positioned near the outer peripheral face place of drill body 10 and does not join with cutter groove 11 at this moment, in this preferred embodiment, rotating part 31 is a hexagonal counterbore.
When cutting operation is carried out in this preferred embodiment of application, the smear metal of overflowing along cutter groove 11 can not produce friction with the rotating part 31 of set bolt 30, even therefore even this preferred embodiment is through permanent use, the rotating part of set bolt 30 also can not damage and cause set bolt 30 to pull down, so this preferred embodiment still can be possessed the function that tool rest 20 is changed, cutter head 22 can not take place damage the situation that but can't change tool rest 20 and must will put in order the group bit change-over, and then can save the manufacturing processing cost.
Description of reference numerals
10 drill bodies, 11 spiral cutter grooves
12 engagement grooves, 13 combined holes
20 tool rests, 21 fixing holes
22 cutter heads
30 set bolts, 31 rotating parts
Claims (7)
1. the drill bit of a replaceable tool rest is characterized in that, comprising:
Drill body, it is provided with more than one cutter groove, the combined hole that the drill body front end is formed with more than and is communicated with the cutter groove respectively;
More than one tool rest, it is located at the drill body front end and joins with the cutter groove respectively, tool rest is provided with one and runs through tool rest and corresponding to the fixing hole and the more than one cutter head of drill body combined hole, fixing hole is provided with an internal thread, and cutter head is located at the front side of tool rest and is protruded in the front end of tool rest and the front end of drill body; And
More than one set bolt, it is provided with an external screw thread and a rotating part corresponding to the set internal thread of tool rest fixing hole, the set bolt screw lock is in the fixing hole of the combined hole of drill body and tool rest, and the rotating part of set bolt is positioned near the outer peripheral face place of drill body and does not join with the cutter groove.
2. the drill bit of replaceable tool rest according to claim 1 is characterized in that, described drill body front end is formed with the engagement groove that is communicated with the cutter groove respectively more than, and combined hole is formed at the engagement groove bottom, and tool rest is located in the engagement groove.
3. the drill bit of replaceable tool rest according to claim 2 is characterized in that, includes two tool rests, and drill body is provided with two cutter grooves and two engagement grooves, and tool rest is located at respectively in two engagement grooves.
4. the drill bit of replaceable tool rest according to claim 3 is characterized in that, described tool rest is provided with two cutter heads, and cutter head is located at the end face of tool rest.
5. the drill bit of replaceable tool rest according to claim 4 is characterized in that, described rotating part is a hexagonal counterbore.
6. the drill bit of replaceable tool rest according to claim 1 is characterized in that, described tool rest is provided with two cutter heads, and cutter head is located at the end face of tool rest.
7. the drill bit of replaceable tool rest according to claim 1 is characterized in that, described rotating part is a hexagonal counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201463383U CN201046510Y (en) | 2007-06-04 | 2007-06-04 | Tool apron replaceable drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201463383U CN201046510Y (en) | 2007-06-04 | 2007-06-04 | Tool apron replaceable drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201046510Y true CN201046510Y (en) | 2008-04-16 |
Family
ID=39299085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201463383U Expired - Lifetime CN201046510Y (en) | 2007-06-04 | 2007-06-04 | Tool apron replaceable drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201046510Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758273B (en) * | 2008-12-19 | 2015-09-23 | 山特维克知识产权股份有限公司 | Drill body and supporting pad thereof |
-
2007
- 2007-06-04 CN CNU2007201463383U patent/CN201046510Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758273B (en) * | 2008-12-19 | 2015-09-23 | 山特维克知识产权股份有限公司 | Drill body and supporting pad thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080416 |