CN105710398B - A kind of head-exchangeable cutting tool - Google Patents
A kind of head-exchangeable cutting tool Download PDFInfo
- Publication number
- CN105710398B CN105710398B CN201610190082.XA CN201610190082A CN105710398B CN 105710398 B CN105710398 B CN 105710398B CN 201610190082 A CN201610190082 A CN 201610190082A CN 105710398 B CN105710398 B CN 105710398B
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- head
- locating slot
- taper
- cutting tool
- positioning body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a kind of head-exchangeable cutting tool, including hold assembly, field replaceable unit and trip bolt, the head end of hold assembly is provided with taper locating slot, the outer wall of hold assembly is provided with the mounting groove connected with taper locating slot, the bottom surface of taper locating slot is provided with detent, screwed hole is provided with detent, the tail end of field replaceable unit is provided with flat taper positioning body, the bottom surface of flat taper positioning body is provided with the fastening grooves with the head fits of the trip bolt, field replaceable unit is provided with the spanner connected with fastening grooves and passes through hole, flat taper positioning body enters in taper locating slot and rotated to an angle so that the conical outer wall of flat taper positioning body is engaged with the conical inboard wall of the taper locating slot through the mounting groove, trip bolt is installed in screwed hole and head pushing tow is in the fastening grooves.The present invention has the advantages that to be easy to produce, connects firm, easy installation and removal, registration.
Description
Technical field
The present invention relates to metal cutting tool, more particularly to a kind of head-exchangeable cutting tool.
Background technology
In metal cutting, during using head-exchangeable cutting tool, tool change time can be effectively reduced, efficiency is improved.Simultaneously
Particularly in major diameter（Diameter is in more than 30mm）, long shank（Shank is in more than 250mm）Cutting tool in, can using head
The structure changed can effectively reduce cutter use cost.The connection positioning method used in the prior art is that cylinder adds pin mostly
Nail positioning, cylinder plus key groove positioning, shape changeable positioning etc., its location structure be required for by grinding or precision turning, milling come
Guarantee reaches accurate size requirement, just can guarantee that the positioning precision of its location structure.However, being often difficult to reach in actual production
To positioning precision, so as to cause the repetitive positioning accuracy of interchangeable part not high, or accurate size is reached but cost is very high, from
And lose economic benefit.In addition, the design for using multiple screws to keep to the side arrangement is also needed in the prior art, to ensure replaceable head
There are enough spaces and arranged to meet the structure of insert groove, so cause the inconvenience of dismounting, largely lose
Reduce effect of tool change time.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art to be easy to production, stable connection there is provided one kind
Reliably, easy installation and removal, the head-exchangeable cutting tool of registration.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of head-exchangeable cutting tool, including hold assembly, field replaceable unit and trip bolt, the head end of the hold assembly
Provided with taper locating slot, the outer wall of the hold assembly is provided with the mounting groove connected with taper locating slot, the taper locating slot
Bottom surface be provided with detent, screwed hole is provided with the detent, the tail end of the field replaceable unit is provided with flat taper
Positioning body, the bottom surface of the flat taper positioning body is described provided with the fastening grooves with the head fits of the trip bolt
Field replaceable unit is provided with the spanner connected with fastening grooves by hole, and the flat taper positioning body enters through the mounting groove
Taper locating slot is interior and rotates to an angle so that the conical outer wall of flat taper positioning body and the taper locating slot
Conical inboard wall is engaged, and the trip bolt is installed in screwed hole and head pushing tow is in the fastening grooves.
It is used as the further improvement of above-mentioned technical proposal：
It is one in Cone fit, cylindrical fit and mating spherical surfaces between the head of the trip bolt and fastening grooves
Kind.
There is eccentric throw L, 2mm≤L≤8mm between the axis C2 of the screwed hole and the axis C1 of taper locating slot.
Folder between the axis C3 of the conical outer wall of the flat taper positioning body and the flat taper positioning body
Angle is β, 3.5 °≤β≤15.5 °.
There is gap b1,0.2 mm≤b1 between the bottom surface of the flat taper positioning body and the bottom surface of taper locating slot
≤ 3 mm, have gap b2, the mm of 0.1 mm≤b2≤2 between the head end of the hold assembly and the tail end of field replaceable unit.
The mounting groove is set to dovetail channel-shaped or straight trough shape.
The screwed hole is set to two, and described two screwed holes are symmetrical arranged on the axis C1 of taper locating slot.
The mounting groove is set to two, and two mounting grooves are symmetrical arranged on the axis C1 of taper locating slot.
Described two screwed holes and two mounting grooves are not on the same line.
The field replaceable unit is provided with blade installation slot.
Compared with prior art, the advantage of the invention is that：
The head-exchangeable cutting tool of the present invention, by rotational fastener screw, makes its head pushing tow be positioned in flat taper
The detent of body bottom surface, in pushing under effect for trip bolt, flat taper positioning body is close to the right taper locating slot, from
And conical outer wall is coordinated with conical inboard wall formation wedging；Field replaceable unit and hold assembly are by conical surface wedging, and stable connection can
Lean on, the taper locating slot on taper positioning body and hold assembly on field replaceable unit is all without going through accurate size Control with regard to energy
Accurate certralizing ability is played, is easy to production；Meanwhile, the spanner connected with fastening grooves is set on field replaceable unit by hole,
So only need to leave a less spanner on field replaceable unit and stretch into space and fastening trip bolt can be achieved, to field replaceable unit
Structure destruction it is relatively low；In addition, only need to can just realize the fastening function of field replaceable unit and hold assembly by trip bolt, pacify
Assembly and disassembly are simple to operate, fast and easy.
Further, head-exchangeable cutting tool of the invention, the axis for installing the screwed hole of trip bolt is fixed with respect to taper
The axis of position groove exists eccentric, you can to realize that field replaceable unit circumferencial direction is accurately positioned, while the clamping force of field replaceable unit can
Significantly to be lifted, rotating in a circumferential direction for field replaceable unit can be effectively prevented, it is safe and reliable.
Brief description of the drawings
Fig. 1 is the perspective exploded view of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 2 is the structural representation of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 3 is the front view of the field replaceable unit of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 4 is Fig. 3 upward view.
Fig. 5 is the structural representation of the hold assembly of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 6 is the structural representation of two screwed holes of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 7 is the installation process schematic diagram of head-exchangeable cutting tool embodiment 1 of the present invention.
Fig. 8 is the structural representation of head-exchangeable cutting tool embodiment 2 of the present invention.
Fig. 9 is the schematic perspective view of the hold assembly of head-exchangeable cutting tool embodiment 2 of the present invention.
Figure 10 is the structural representation of head-exchangeable cutting tool embodiment 3 of the present invention.
Each label is represented in figure：
1st, hold assembly；11st, mounting groove；12nd, taper locating slot；121st, conical inboard wall；13rd, detent；14th, screw thread
Hole；2nd, field replaceable unit；21st, flat taper positioning body；211st, conical outer wall；212nd, fastening grooves；22nd, spanner passes through hole；23、
Blade installation slot；3rd, trip bolt；31st, head.
Embodiment
The present invention is described in further detail below in conjunction with Figure of description and specific embodiment.
Embodiment 1
As shown in Figures 1 to 7, the head-exchangeable cutting tool of the present embodiment, including hold assembly 1, field replaceable unit 2 and fastening
Screw 3, the head end of hold assembly 1 is provided with taper locating slot 12, and the outer wall of hold assembly 1 is provided with what is connected with taper locating slot 12
Mounting groove 11, the bottom surface of taper locating slot 12, which is provided with detent 13, detent 13, is provided with screwed hole 14, field replaceable unit 2
Tail end be provided with flat taper positioning body 21, the bottom surface of flat taper positioning body 21 is provided with the head 31 with trip bolt 3
The fastening grooves 212 of cooperation, field replaceable unit 2 is provided with the spanner connected with fastening grooves 212 and passes through hole 22, flat taper positioning
Body 21 enters in taper locating slot 12 and rotated to an angle so that the cone of flat taper positioning body 21 through mounting groove 11
Shape outer wall 211 is engaged with the conical inboard wall 121 of taper locating slot 12, and trip bolt 3 is installed in screwed hole 14 and head 31
Pushing tow is in fastening grooves 212.Hold assembly 1 is general to refer to the body portion of cutting tool, and field replaceable unit 2 refers generally to bite
The tool bit part of tool.The width of flat taper positioning body 21 is less than or equal to the minimum widith of mounting groove 11, flat to ensure
Flat-shaped taper positioning body 21 can enter in taper locating slot 12 through mounting groove 11.The present embodiment, which rotates to an angle, to be referred at 0 °
Any value in the range of 180 °, not including 0 ° and 180 °.
During assembling, trip bolt 3 is installed in screwed hole 14 first, and its head 31 is located in detent 13,
Then the position of field replaceable unit 2 is adjusted, mobile field replaceable unit 2 makes flat taper positioning body 21 enter taper through mounting groove 11
In locating slot 12, then rotate to an angle, make the conical outer wall 211 and taper locating slot 12 of flat taper positioning body 21
Conical inboard wall 121 coordinates, and now trip bolt 3, fastening grooves 212 and spanner are located in same straight line by hole 22, then will
Spanner（Not shown in figure）Spanner is stretched into by hole 22, rotational fastener screw 3, making its head 31, pushing tow is bored in flat to the right
In the fastening grooves 212 of the bottom surface of shape positioning body 21, in pushing under effect for trip bolt 3, flat taper positioning body 21 is to the right
Taper locating slot 12 is close to, so that conical outer wall 211 coordinates with the formation wedging of conical inboard wall 121.The head-exchangeable of the present embodiment
Cutting tool, field replaceable unit 2 and hold assembly 1 are by conical surface wedging, and stable connection is reliable, the flat cone on field replaceable unit 2
Taper locating slot 12 on shape positioning body 21 and hold assembly 1 is all accurate fixed with regard to that can play without going through accurate size Control
The heart is acted on, and is easy to production；Meanwhile, set the spanner connected with fastening grooves 212 by hole 22 on field replaceable unit 2, so may be used
Change on part to only need to leave a less spanner and stretch into space and fastening trip bolt 3 can be achieved, to the knot of field replaceable unit 2
Structure destruction is relatively low；In addition, only need to can just realize the fastening function of field replaceable unit 2 and hold assembly 1 by trip bolt 3, pacify
Assembly and disassembly are simple to operate, fast and easy.
In the present embodiment, the head 31 of trip bolt 3 has inner hexagonal hole, is operated with convenient wrench.In addition to the present embodiment,
The head 31 of trip bolt 3 can also be Triangle ID hole or the hole of other forms, can be selected according to the spanner model of operation.
In the present embodiment, field replaceable unit 2 is provided with blade installation slot 23.Due to only needing to leave one on field replaceable unit 2
The less spanner of diameter by hole 22 so that the structure design to the blade installation slot 23 on field replaceable unit 2 leave it is bigger
Space.
In the present embodiment, coordinate between the head 31 of trip bolt 3 and fastening grooves 212 for circular conical surface.Fastening grooves 212
Using pyramidal structure, the head 31 of corresponding trip bolt 3 also uses the structure of taper, so fastened under thrust it is recessed
The wedging of head 31 of groove 212 and trip bolt 3 coordinates, and not only makes field replaceable unit 2 more accurate in the positioning of circumferencial direction, and
And circumferential position difference when repeating to install is smaller.
There is eccentric throw L, 2mm≤L≤8mm between the axis C2 of screwed hole 14 and the axis C1 of taper locating slot 12, fit
The eccentric throw L of amount can realize that the circumferencial direction of field replaceable unit 2 is accurately positioned, while the clamping force of field replaceable unit can obtain very big
The lifting of degree, can effectively prevent rotating in a circumferential direction for field replaceable unit 2, safe and reliable；According to can blade installation slot 23 structure
Difference, eccentric throw L can be adjusted suitably, and L=4mm is taken in the present embodiment；The installation site of trip bolt 3 takes same eccentric throw L,
When so trip bolt 3 completes to push, frictional force and eccentric moment are produced in fixation, conical outer wall 211 and taper jointly
The wedging of wall 121 is more firm.
Angle between the conical outer wall 211 of flat taper positioning body 21 and the axis C3 of flat taper positioning body 21
For β, 3.5 °≤β≤15.5 °.The conical inboard wall 121 of taper locating slot 12 can be effectively adjusted by adjusting angle β size
The ratio of radial load and axial force, β is selected according to the actual size of cutting tool, while need to ensure the intensity of hold assembly 1.This
β=10 ° are taken in embodiment.Conical outer wall 211 is when by thrust, and the direction made a concerted effort is on axis C3, such structure centering essence
Really, and to the size of conical outer wall 211 require relatively low, it is highly beneficial in actual production.
There is gap b1,0.2 mm≤b1 between the bottom surface of flat taper positioning body 21 and the bottom surface of taper locating slot 12
≤ 3 mm, the gap can ensure have when flat taper positioning body 21 is dismantled in certain space, the present embodiment, the mm of b1=0.5；
There is gap b2, the mm of 0.1 mm≤b2≤2, the gap can ensure between the head end of hold assembly 1 and the tail end of field replaceable unit 2
When conical outer wall 211 is with 121 wedging of conical inboard wall, it will not be interfered by the bottom surface of flat taper positioning body 21, it is ensured that interchangeable portion
Part 2 is secured in a press on hold assembly 1, while in easy installation and removal, the present embodiment, the mm of b2=0.2.
In the present embodiment, mounting groove 11 is set to dovetail channel-shaped.
In the present embodiment, screwed hole 14 is set to two, axis C1 pair of two screwed holes 14 on taper locating slot 12
Claim to set.Mounting groove 11 is set to two, and two mounting grooves 11 are symmetrical arranged on the axis C1 of taper locating slot 12.Two spiral shells
Pit 14 and two mounting grooves 11 are not on the same line.Due to the arranged direction of two screwed holes 14 in the present embodiment and two
The arranged direction of mounting groove 11 is vertical, therefore, and in rotary flat shape taper positioning body 21, the angle of rotation is 90 °, so as to true
The conical outer wall 211 for protecting flat taper positioning body 21 is engaged with the conical inboard wall 121 of taper locating slot 12.
Embodiment 2
As shown in Figure 8 and Figure 9, the head-exchangeable cutting tool of the present embodiment is substantially the same manner as Example 1, differs only in：
Mounting groove 11 is straight trough shape, as shown in figure 8, the processing so as to simplify mounting groove 11；The head 31 of trip bolt 3 is recessed with fastening
Head 31 between groove 212 for mating spherical surfaces, i.e. trip bolt 3 uses spherical, as shown in Figure 9.Mounting groove 11 is straight trough shape, this
Sample is conducive to the production of hold assembly 1, while improving the rigidity of hold assembly 1.The structure is in the less use occasion of load
There is down advantage.
Embodiment 3
As shown in Figure 10, the head-exchangeable cutting tool of the present embodiment is substantially the same manner as Example 1, differs only in：Fastening
Coordinate between the head 31 of screw 3 and fastening grooves 212 for the face of cylinder, i.e., the head 31 of trip bolt 3 uses cylinder, accordingly
Fastening grooves 212 be also cylinder, process simpler, the structure load it is larger, circumferentially positioned require relatively low use field
Close lower with advantage.
Although the present invention is disclosed above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, in the case where not departing from technical solution of the present invention scope, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (10)
1. a kind of head-exchangeable cutting tool, including hold assembly（1）, field replaceable unit（2）And trip bolt（3）, the clamping part
Part（1）Head end be provided with taper locating slot（12）, the hold assembly（1）Outer wall be provided with and taper locating slot（12）Connection
Mounting groove（11）, it is characterised in that：The taper locating slot（12）Bottom surface be provided with detent（13）, the detent
（13）It is interior to be provided with screwed hole（14）, the field replaceable unit（2）Tail end be provided with flat taper positioning body（21）, the flat
Taper positioning body（21）Bottom surface be provided with and the trip bolt（3）Head（31）The fastening grooves of cooperation（212）, it is described can
Change part（2）It is provided with and fastening grooves（212）The spanner of connection passes through hole（22）, the flat taper positioning body（21）Pass through
The mounting groove（11）Into taper locating slot（12）It is interior and rotate to an angle so that flat taper positioning body（21）'s
Conical outer wall（211）With the taper locating slot（12）Conical inboard wall（121）It is engaged, the trip bolt（3）It is installed in
Screwed hole（14）Interior and head（31）Pushing tow is in the fastening grooves（212）It is interior.
2. head-exchangeable cutting tool according to claim 1, it is characterised in that：The trip bolt（3）Head（31）
With fastening grooves（212）Between for circular conical surface coordinate, the face of cylinder coordinate and mating spherical surfaces in one kind.
3. head-exchangeable cutting tool according to claim 1, it is characterised in that：The screwed hole（14）Axis C2 with cone
Shape locating slot（12）Axis C1 between have eccentric throw L, 2mm≤L≤8mm.
4. the head-exchangeable cutting tool according to claims 1 to 3 any one, it is characterised in that：The flat taper
Positioning body（21）Conical outer wall（211）With the flat taper positioning body（21）Axis C3 between angle be β, 3.5 °
≤β≤15.5°。
5. the head-exchangeable cutting tool according to claims 1 to 3 any one, it is characterised in that：The flat taper
Positioning body（21）Bottom surface and taper locating slot（12）Bottom surface between there is gap b1, the mm of 0.2 mm≤b1≤3, the folder
Hold part（1）Head end and field replaceable unit（2）Tail end between there is gap b2, the mm of 0.1 mm≤b2≤2.
6. the head-exchangeable cutting tool according to claims 1 to 3 any one, it is characterised in that：The mounting groove（11）
It is set to dovetail channel-shaped or straight trough shape.
7. the head-exchangeable cutting tool according to claims 1 to 3 any one, it is characterised in that：The screwed hole（14）
It is set to two, described two screwed holes（14）On taper locating slot（12）Axis C1 be symmetrical arranged.
8. head-exchangeable cutting tool according to claim 7, it is characterised in that：The mounting groove（11）Two are set to,
Two mounting grooves（11）On taper locating slot（12）Axis C1 be symmetrical arranged.
9. head-exchangeable cutting tool according to claim 8, it is characterised in that：Described two screwed holes（14）With two peaces
Tankage（11）Not on the same line.
10. the head-exchangeable cutting tool according to claims 1 to 3 any one, it is characterised in that：The field replaceable unit
（2）It is provided with blade installation slot（23）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610190082.XA CN105710398B (en) | 2016-03-30 | 2016-03-30 | A kind of head-exchangeable cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610190082.XA CN105710398B (en) | 2016-03-30 | 2016-03-30 | A kind of head-exchangeable cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105710398A CN105710398A (en) | 2016-06-29 |
| CN105710398B true CN105710398B (en) | 2017-10-27 |
Family
ID=56158167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610190082.XA Active CN105710398B (en) | 2016-03-30 | 2016-03-30 | A kind of head-exchangeable cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105710398B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL120948A0 (en) * | 1997-05-29 | 1997-09-30 | Iscar Ltd | Cutting tool assembly |
| DE102006012382A1 (en) * | 2006-03-17 | 2007-09-20 | Kennametal Inc. | Turning tool, in particular drilling tool and tool head for a turning tool |
| KR100767730B1 (en) * | 2006-06-30 | 2007-10-18 | 한국야금 주식회사 | Indexable-type insert drill |
| EP2280795B1 (en) * | 2008-04-25 | 2013-07-17 | Gühring OHG | Rotary-driven tool for cutting machining with a cutting body |
| IL195804A (en) * | 2008-12-09 | 2012-12-31 | Iscar Ltd | Cutting tool having releasably mounted self-clamping cutting head |
| DE102013205889B3 (en) * | 2013-04-03 | 2014-05-28 | Kennametal Inc. | Coupling structure e.g. cutting head for rotary tool e.g. drilling tool, has coupling pin with clamping faces and stop surfaces that are arranged in different dispensing areas |
-
2016
- 2016-03-30 CN CN201610190082.XA patent/CN105710398B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105710398A (en) | 2016-06-29 |
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