CN204019231U - Machine tool accessories Extension Head broaching tool structure - Google Patents
Machine tool accessories Extension Head broaching tool structure Download PDFInfo
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- CN204019231U CN204019231U CN201420469750.9U CN201420469750U CN204019231U CN 204019231 U CN204019231 U CN 204019231U CN 201420469750 U CN201420469750 U CN 201420469750U CN 204019231 U CN204019231 U CN 204019231U
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- jaw
- blind rivet
- pull bar
- head
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Abstract
The utility model discloses a kind of machine tool accessories Extension Head broaching tool structure, it has the blind rivet of spring assembly, main shaft, pull bar, jaw and coupling head cutter; Main shaft has axis hole; Pull bar is arranged in this axis hole, and its head is positioned at jaw, and can be extended a driving mechanism and be driven into a clamped position and a released position; Spring assembly is sleeved on pull bar; The afterbody of blind rivet is positioned at jaw, and the afterbody of blind rivet is provided with the jaw contact conical surface; Jaw is arranged in axis hole, and in jaw, is provided with and contacts the blind rivet contact conical surface that the conical surface matches with jaw.The utility model not only can facilitate machine tool accessories Extension Head pine cutter, and can avoid loose cutter occur stuck or even occur can not loose cutter phenomenon.
Description
Technical field
The utility model relates to a kind of machine tool accessories Extension Head broaching tool structure.
Background technology
At present, in planer type boring milling bed, the use of accessory head has improved the processing technology scope of plane milling and boring machine greatly, can be in workpiece clamped one time, complete the manufacturing procedure such as brill, milling, hinge, boring of five faces.The main function of annex Extension Head is to process the box house plane that opening is less.In Extension Head design process, ordinary circumstance lower main axis is that BT50 handle of a knife remains the handle of a knife with BT50 in Extension Head, by in such situation, will have problems, as shown in Figure 1, pull bar 1 is strain clamp pawl 2 under the effect of butterfly spring, jaw 2 tension blind rivets 3, thereby tension accessory head cutter, pull bar 1 is 7mm with blind rivet 3 end face distances, the loose cutter stroke of jaw 2 is also that 7mm (is jaw 2 7mm that moves right, 3 constraints that can throw off jaw 2 of blind rivet), loose cutter stroke and the main shaft knife loosening stroke of accessory head be the same be all 7mm, from figure below, can find out, if pull bar 1 is walked 7mm to the right, blind rivet 3 movement that is equal to nothing, the more impossible cutter that unclamps accessory head, institute is infeasible for annex Extension Head broaching tool by this way.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, a kind of machine tool accessories Extension Head broaching tool structure is provided, it not only can facilitate machine tool accessories Extension Head pine cutter, and can avoid loose cutter occur stuck or even occur can not loose cutter phenomenon.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of machine tool accessories Extension Head broaching tool structure, and it has the blind rivet of spring assembly, main shaft, pull bar, jaw and coupling head cutter; Wherein,
Main shaft, it has axis hole;
Pull bar, it is arranged in this axis hole, and its head is positioned at jaw, and can be extended a driving mechanism and be driven into a clamped position and a released position;
Spring assembly, it is sleeved on pull bar so that the elastic force that provides pull bar to be moved towards clamped position by released position;
Blind rivet, its afterbody is positioned at jaw, and the afterbody of blind rivet is provided with the jaw contact conical surface;
Jaw, it is arranged in axis hole, and in jaw, is provided with and contacts the blind rivet contact conical surface that the conical surface matches with jaw; When pull bar is positioned at clamped position, jaw is clamped the afterbody of blind rivet by its interlock, now between the limiting section of pull bar and spring assembly, there is backhaul gap H, the head end of pull bar and the tail end of blind rivet connect, and the jaw of the blind rivet afterbody contact conical surface contacts the conical surface and has anti-jamming gap h with blind rivet; When pull bar is positioned at released position, jaw is unclamped the afterbody of blind rivet by its interlock.
Further in order to make, guarantee to use on BT50 main shaft, total kilometres and original stroke remain unchanged, and described backhaul gap H is 3mm, and described anti-jamming gap h distance on the axial direction of blind rivet is 1mm.
Further, the afterbody of described blind rivet is also provided with radially clamping face of jaw, is also provided with and the jaw blind rivet that radially clamping face matches clamping face radially in described jaw.
Further, described spring assembly comprises disk spring group and block, and described pull bar can axially movably pass this block, and the head end of butterfly spring group is connected on this block, and block is fixedly mounted on main shaft.
Further provide the concrete structure of axis hole in a kind of main shaft so that jaw action makes its clamping or unclamps blind rivet, the head of the axis hole of described main shaft has a shoulder hole; When pull bar is positioned at clamped position, the head of jaw is drawn in by pull bar in the smaller part of this shoulder hole so that the afterbody of blind rivet is clamped in the relative clamping of this head, when pull bar is positioned at released position, the head of jaw is pushed into by pull bar in the larger portion of this shoulder hole so that this head opens the afterbody that unclamps blind rivet relatively.
Adopted after technique scheme, this machine tool accessories Extension Head broaching tool structure is to have utilized the backhaul stroke of main shaft, thereby suitable minimizing backhaul stroke the stroke of pull bar is increased, distortion due to spring assembly is simultaneously reducing, broach force is being reduced, but in annex, can the power of main spindle broach be made up with Rectangular Spring, make annex Extension Head broach force constant, the utility model directly contacts the head end of pull bar with the tail end of blind rivet, and by blind rivet, contact the conical surface and contact the anti-jamming gap h that the conical surface leaves with jaw, make jaw and blind rivet there is activity space axially and radially, thereby when annex Extension Head pine broaching tool, just there will not be the stuck and loose phenomenon of not driving Extension Head cutter of jaw, the problem that the utility model is reducing the broach force of its annex Extension Head due to structural change, can make up by the spring in Extension Head the broach force having reduced, by calculate can guarantee the broach force of accessory head and the broach force of main shaft consistent, this annex Extension Head tool-broaching mechanism, it not only can facilitate machine tool accessories Extension Head pine cutter, and can avoid loose cutter occur stuck or even occur can not loose cutter phenomenon, make designer when design Extension Head, it is simple that structure becomes, tightening force becomes reliable and can debug convenient according to no situation, aspect the tension of electrical control Extension Head cutter and unclamping, do not need to increase in addition any electrical equipment.Aspect hydraulic control, do not need separately to establish oil circuit and go to control, make like this debugging more convenient.Components and parts cost and human cost have been reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the machine tool accessories Extension Head broaching tool structure under perfect condition;
Fig. 2 is the structural representation of machine tool accessories Extension Head broaching tool structure of the present utility model;
Fig. 3 is the I portion enlarged drawing of Fig. 2.
The specific embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Fig. 2～3, a kind of machine tool accessories Extension Head broaching tool structure, it has the blind rivet 3 of spring assembly, main shaft 4, pull bar 1, jaw 2 and coupling head cutter; Wherein,
Main shaft 4, it has axis hole 4-1;
Pull bar 1, it is arranged in this axis hole 4-1, and its head is positioned at jaw 2, and can be extended a driving mechanism and be driven into a clamped position and a released position;
Spring assembly, it is sleeved on pull bar 1 so that the elastic force that provides pull bar 1 to be moved towards clamped position by released position;
Blind rivet 3, its afterbody is positioned at jaw 2, and the afterbody of blind rivet 3 is provided with jaw contact conical surface 3-1;
Jaw 2, it is arranged in axis hole 4-1, and in jaw 2, is provided with and contacts the blind rivet contact conical surface 2-1 that conical surface 3-1 matches with jaw; When pull bar 1 is positioned at clamped position, jaw 2 is clamped the afterbody of blind rivet 3 by its interlock, now between the limiting section 1-1 of pull bar 1 and spring assembly, there is backhaul gap H, the tail end of the head end of pull bar 1 and blind rivet 3 connects, and the jaw of blind rivet 3 afterbodys contact conical surface 3-1 contacts conical surface 2-1 and has anti-jamming gap h with blind rivet; When pull bar 1 is positioned at released position, jaw 2 is unclamped the afterbody of blind rivet 3 by its interlock.
Backhaul gap H is 3mm, and described anti-jamming gap h distance on the axial direction of blind rivet is 1mm.The backhaul gap H of original spring assembly is 4mm, now it is reduced to 3mm (concrete size can depending on actual conditions), so, the stroke that pull bar pushes away forward has just increased 1mm, in order to guarantee the manufacturability of assembling, in Fig. 2, some adjustment are done on the basis of blind rivet 3, adjust one: blind rivet is contacted to the conical surface with blind rivet and move 1mm along the backhaul of spring assembly, adjust two: the axial distance that jaw contact conical surface 3-1 is contacted to conical surface 2-1 with blind rivet shortens 1mm.Refer to enlarged drawing I in Fig. 3, when annex Extension Head pine broaching tool, just there will not be so the stuck and loose phenomenon of not driving Extension Head cutter of jaw.When in Fig. 3, pull bar 1 is drawn back 1mm, the distortion of spring assembly reduces 1mm, the broach force of annex Extension Head is reducing, and the spring 10 in figure in Extension Head can make up the broach force having reduced, by calculate can guarantee the broach force of accessory head and the broach force of main shaft consistent.
As shown in Figure 2, the afterbody of blind rivet 3 is also provided with radially clamping face 3-2 of jaw, is also provided with and the jaw blind rivet that radially clamping face 3-2 matches clamping face 2-2 radially in described jaw 2.
As shown in Figure 2, spring assembly comprises disk spring group 5 and block 6, and pull bar 1 can axially movably pass this block 6, and the head end of butterfly spring group 5 is connected on this block 6, and block 6 is fixedly mounted on main shaft 4.
As shown in Figure 2, the head of the axis hole 4-1 of main shaft 4 has a shoulder hole 4-1-1; When pull bar 1 is positioned at clamped position, the head of jaw 2 is drawn in by pull bar 1 in the smaller part of this shoulder hole so that the afterbody of blind rivet 3 is clamped in the relative clamping of this head, when pull bar 1 is positioned at released position, the head of jaw 2 is pushed into by pull bar 1 in the larger portion of this shoulder hole 4-1-1 so that this head opens the afterbody that unclamps blind rivet 3 relatively.
Operation principle of the present utility model is as follows:
This machine tool accessories Extension Head broaching tool structure is the backhaul stroke that has utilized main shaft 4, thereby suitable minimizing backhaul stroke the stroke of pull bar 1 is increased, distortion due to spring assembly is simultaneously reducing, broach force is being reduced, but in annex, can the power of main spindle broach be made up with spring 10, make annex Extension Head broach force constant, the utility model directly contacts the head end of pull bar 1 with the tail end of blind rivet 3, and by blind rivet, contact conical surface 2-1 and contact the anti-jamming gap h that conical surface 3-1 leaves with jaw, make jaw 2 and blind rivet 3 there is activity space axially and radially, thereby when annex Extension Head pine broaching tool, just there will not be the stuck and loose phenomenon of not driving Extension Head cutter of jaw, the problem that the utility model is reducing the broach force of its annex Extension Head due to structural change, can make up by the spring 10 in Extension Head the broach force having reduced, by calculate can guarantee the broach force of accessory head and the broach force of main shaft consistent, this annex Extension Head tool-broaching mechanism, it not only can facilitate machine tool accessories Extension Head pine cutter, and can avoid loose cutter occur stuck or even occur can not loose cutter phenomenon, make designer when design Extension Head, it is simple that structure becomes, tightening force becomes reliable and can debug convenient according to no situation, aspect the tension of electrical control Extension Head cutter and unclamping, do not need to increase in addition any electrical equipment.Aspect hydraulic control, do not need separately to establish oil circuit and go to control, make like this debugging more convenient.Components and parts cost and human cost have been reduced.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a machine tool accessories Extension Head broaching tool structure, is characterized in that: it has the blind rivet (3) of spring assembly, main shaft (4), pull bar (1), jaw (2) and coupling head cutter; Wherein,
Main shaft (4), it has axis hole (4-1);
Pull bar (1), it is arranged in this axis hole (4-1), and its head is positioned at jaw (2), and can be extended a driving mechanism and be driven into a clamped position and a released position;
Spring assembly, it is upper to the pull bar elastic force that (1) is moved towards clamped position by released position is provided that it is sleeved on pull bar (1);
Blind rivet (3), its afterbody is positioned at jaw (2), and the afterbody of blind rivet (3) is provided with the jaw contact conical surface (3-1);
Jaw (2), it is arranged in axis hole (4-1), and in jaw (2), is provided with and contacts the blind rivet contact conical surface (2-1) that the conical surface (3-1) matches with jaw; When pull bar (1) is positioned at clamped position, jaw (2) is clamped the afterbody of blind rivet (3) by its interlock, now between the limiting section (1-1) of pull bar (1) and spring assembly, there is backhaul gap H, the tail end of the head end of pull bar (1) and blind rivet (3) connects, and the jaw of blind rivet (3) the afterbody contact conical surface (3-1) contacts the conical surface (2-1) and has anti-jamming gap h with blind rivet; When pull bar (1) is positioned at released position, jaw (2) is unclamped the afterbody of blind rivet (3) by its interlock.
2. machine tool accessories Extension Head broaching tool structure according to claim 1, is characterized in that: described backhaul gap H is 3mm, and described anti-jamming gap h distance on the axial direction of blind rivet is 1mm.
3. machine tool accessories Extension Head broaching tool structure according to claim 1 and 2, it is characterized in that: the afterbody of described blind rivet (3) is also provided with radially clamping face (3-2) of jaw, in described jaw (2), be also provided with and the jaw blind rivet that radially clamping face (3-2) matches clamping face (2-2) radially.
4. machine tool accessories Extension Head broaching tool structure according to claim 1 and 2, it is characterized in that: described spring assembly comprises disk spring group (5) and block (6), described pull bar (1) can axially movably pass this block (6), and it is upper that the head end of butterfly spring group (5) is connected to this block (6), and block (6) is fixedly mounted on main shaft (4).
5. machine tool accessories Extension Head broaching tool structure according to claim 1 and 2, is characterized in that: the head of the axis hole (4-1) of described main shaft (4) has a shoulder hole (4-1-1); When pull bar (1) is positioned at clamped position, the head of jaw (2) is drawn in by pull bar (1) in the smaller part of this shoulder hole so that the afterbody of blind rivet (3) is clamped in the relative clamping of this head, when pull bar (1) is positioned at released position, the head of jaw (2) is pushed into by pull bar (1) in the larger portion of this shoulder hole (4-1-1) so that this head opens the afterbody that unclamps blind rivet (3) relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469750.9U CN204019231U (en) | 2014-08-20 | 2014-08-20 | Machine tool accessories Extension Head broaching tool structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469750.9U CN204019231U (en) | 2014-08-20 | 2014-08-20 | Machine tool accessories Extension Head broaching tool structure |
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| CN204019231U true CN204019231U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420469750.9U Active CN204019231U (en) | 2014-08-20 | 2014-08-20 | Machine tool accessories Extension Head broaching tool structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470704A (en) * | 2017-08-31 | 2017-12-15 | 广州市昊志机电股份有限公司 | A kind of broaching tool structure |
| CN113021041A (en) * | 2021-03-22 | 2021-06-25 | 宁波天控五轴数控技术有限公司 | Quick tool changing structure of main shaft |
-
2014
- 2014-08-20 CN CN201420469750.9U patent/CN204019231U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470704A (en) * | 2017-08-31 | 2017-12-15 | 广州市昊志机电股份有限公司 | A kind of broaching tool structure |
| CN113021041A (en) * | 2021-03-22 | 2021-06-25 | 宁波天控五轴数控技术有限公司 | Quick tool changing structure of main shaft |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |