CN207577898U - A kind of bit leg finish-milling clamp for machining - Google Patents
A kind of bit leg finish-milling clamp for machining Download PDFInfo
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- CN207577898U CN207577898U CN201721644419.6U CN201721644419U CN207577898U CN 207577898 U CN207577898 U CN 207577898U CN 201721644419 U CN201721644419 U CN 201721644419U CN 207577898 U CN207577898 U CN 207577898U
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- bit leg
- escape groove
- poppet
- positioning
- face
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Abstract
A kind of bit leg finish-milling clamp for machining, it is characterised in that：Including pedestal, it is equipped with fore-stock, lower carriage and after-poppet from front to back on pedestal；Locating groove, the first escape groove, the second escape groove and positioning surface are offered in fore-stock；For locating groove against the positioning big axis of bit leg, the first escape groove avoids bit leg axis, and the second escape groove avoids the small axis of bit leg, and positioning surface stops face against bit leg two；Lower push rod is located on lower carriage, the upper end of lower push rod is slapped against bit leg is positioned in the interior concave plane of the back of the body；Pushing rod is located in after-poppet, which can do straight-line displacement with respect to after-poppet along the longitudinal direction；The front end of pushing rod is opposite against the rear end face for being positioned at bit leg shank.The utility model is using simply, and processing quality is stablized, and manufacturing expense is low, high in machining efficiency.
Description
Technical field
The utility model is related to a kind of fixtures, and in particular to a kind of finish-milling clamp for machining of tricone bit bit leg.
Background technology
Tricone bit is using a kind of wide drilling bit, is usually attached separately to three pieces bit leg by three gear wheels
On, then three pieces bit leg assembly welding formed together.As shown in Fig. 1 ~ 4, the bit leg 1 of rock bit is a kind of special construction
Part, the palm that main body includes positioned at positive datum level 2 and positioned at the back side carry on the back 3, and the front end of main body is provided with the axis of bearing
Neck 4.Wherein, the peripheral part of the palm back of the body 3 is palm back of the body outer circle 5, and palm back of the body outer circle 5 offers concave plane 6 in one close to the position of axle journal 4.
Axle journal 4 includes big axis 7, axis 8 and small axis 9, wherein, face 10 is stopped in the end face of axis 8 for two.The rear end of 1 main body of bit leg is
Shank 11.In the process of manufacture of bit leg 1, usually there is provided heat treatment procedure, to change bit leg material surface or interior
The metallurgical structure in portion, so as to reach required mechanical property and physical property.
However, bit leg 1 is after the heat treatment procedures such as carburizing, quenching, between the datum level 2 of bit leg 1 and the axle journal 4 of bit leg 1
Certain heat-treatment distortion is often produced, the axle journal 4 of bit leg is caused to change relative to the bulk of datum level 2, is made
Fitted position can not meet design requirement after being assembled into three pieces bit leg 1, and then influence drilling life of bit.If heat treatment after with
On the basis of the datum level 2 of bit leg 1, heat-treatment distortion is corrected by 4 position of axle journal of smart car bit leg 1, then can lead to bit leg 1
The quench-hardened case at 4 position of axle journal is thinning, and the hardness on 4 surface of axle journal can be caused to reduce, and causes the reduction of bit bearing service life, into
And also affect drilling life of bit.
Therefore, above-mentioned the shortcomings of the prior art how is solved, is become as the class to be researched and solved of the utility model
Topic.
Invention content
The purpose of this utility model is to provide a kind of bit leg finish-milling clamp for machining.
In order to achieve the above objectives, the technical solution adopted in the utility model is：
A kind of bit leg finish-milling clamp for machining, including a pedestal, before being disposed on the pedestal by sequence from front to back
Stent, lower carriage and after-poppet；
The bit leg is horizontally positioned in its benchmark on three stents up, and the axle journal of bit leg is positioned by the fore-stock,
The palm back of the body of bit leg is positioned by the lower carriage, and the shank of bit leg is positioned by the after-poppet；Wherein,
Locating groove, the first escape groove, the second escape groove and positioning surface are offered in the fore-stock；The locating groove
Against the big axis of positioning bit leg journel, first escape groove avoids the axis of bit leg journel, and second escape groove avoids tooth
The small axis of axle journal is slapped, the positioning surface stops face against the two of positioning bit leg journel；
A lower push rod is located on the lower carriage, which can do straight line by relatively described lower carriage along its length
Displacement；The upper end of the lower push rod is slapped against bit leg is positioned in the interior concave plane of the back of the body；
A pushing rod is located in the after-poppet, which is horizontally disposed with, and relatively described along the longitudinal direction can afterwards prop up
Frame does straight-line displacement；The front end of the pushing rod is opposite against the rear end face for being positioned at bit leg shank.
Related content in above-mentioned technical proposal is explained as follows：
1. in said program, the pedestal is horizontally positioned on the microscope carrier of lathe, and can be driven and be overturn by microscope carrier.
2. in said program, the fore-stock, the lower carriage and the after-poppet three can be along the longitudinal direction in pedestals
Upper adjustment of displacement position, to adapt to the bit leg of different specification size, and three stents are secured by bolts in the upper surface of pedestal.
3. in said program, the fore-stock is made of prelocalization seat and pre-positioning block, the pre-positioning block is fixedly arranged on institute
It states above prelocalization seat；The locating groove is V-arrangement locating groove, set on the top of the prelocalization seat；Described first avoids
Slot be the first U-shaped escape groove, second escape groove be the second U-shaped escape groove, the first U-shaped escape groove, the second U-shaped escape groove and
The positioning surface is both formed in the pre-positioning block.
4. in said program, the center line of the lower push rod is located on the axis of bit leg journel.It designs whereby, it can be by tooth
Only face is preferably pushed against on the positioning surface of fore-stock the two of palm axle journal.
5. in said program, a rear jacking block is additionally provided on the after-poppet, which is slideably positioned in front-rear direction
The top of the after-poppet；The front end of the pushing rod is against the rear end face for being positioned at the rear jacking block, the front end face of rear jacking block
Against the rear end face for being positioned at bit leg shank.It designs whereby, can be contacted with the face of bit leg shank by rear jacking block and preferably reached
Push against the purpose of positioning.
6. in said program, the lower surface of the pedestal is equipped with downwards a positioning convex platform, for the microscope carrier of connecting machine tool, institute
It states and multiple U-shaped screw rod mounting grooves is further opened on pedestal, the microscope carrier of lathe is fixed on for passing through screw rod by pedestal.
7. in said program, the datum level includes an interarea, two sides and two lateral surfaces, and the both sides of the interarea are
Two sides, the outside of two sides is respectively two lateral surfaces.When bit leg is positioned by fixture, the datum level is led with it
Setting up, interarea is parallel with horizontal plane at this time.
8. in said program, the utility model is positioning the big axis of bit leg, two only positioning by way of face, shank rear end face
Bit leg.Clamping method is：
First, bit leg is positioned on fixture, the datum level interarea of bit leg is upward；Make the big axis of bit leg and locating slot close,
And it by manual pre-screwing lower push rod, is pre-positioned so as to make two on bit leg journel to stop face with the positioning surface on pre-positioning block；
Further, pushing rod is tightened manually, and the top of pushing rod is made to be contacted with the cambered surface that holds out against in rear jacking block；
Further, the front end face in rear jacking block is contacted and held out against with the rear end face of bit leg shank, make the big axis of bit leg
It is bonded completely with locating slot, has been entirely limited Z-direction rotational freedom at this time；
Finally, lower push rod is tightened manually, bit leg is made to be completely fixed clamping, so as to limit its shifting in the X, Y, Z direction
Dynamic and rotation degree of freedom.
9. in said program, when bit leg finish-milling is processed, the interarea of bit leg datum level is processed first, later, is overturn respectively
Pedestal four times, with remaining two sides and two lateral surfaces are processed to datum level respectively.
The operation principle and advantage of the utility model are as follows：
Only face, " one axis of two sides " positioning method of bit leg shank rear end face are fixed using the big axis of bit leg, two for the utility model
Position bit leg, and pass through lower push rod, pushing rod cooperation application coupling mechanism force, bit leg can be made to position and clamp completely, realize primary dress
Folder, finish-milling bit leg datum level.After the utility model solves bit leg heat treatment, generating heat-treatment distortion causes bit leg journel opposite
Change in the bulk of datum level, cause three pieces bit leg assemble after fitted position the problem of can not meeting design requirement, reach
Bit bearing service life is neither influenced, can also meet the purpose of every fitted position required precision after the assembling of three pieces bit leg.
Simple with using, processing quality is stablized, and manufacturing expense is low, it is high in machining efficiency the advantages that.
Description of the drawings
Attached drawing 1 is the structure diagram of bit leg（Section view）；
Attached drawing 2 is the A of Fig. 1 to viewing angle constructions schematic diagram；
Attached drawing 3 is the dimensional structure diagram one of bit leg；
Attached drawing 4 is the dimensional structure diagram two of bit leg；
Attached drawing 5 is the structure diagram of the utility model embodiment；
Attached drawing 6 is the use state of the utility model embodiment with reference to figure one；
Attached drawing 7 is the use state of the utility model embodiment with reference to figure two；
Attached drawing 8 is the cross-sectional view of Fig. 7；
Attached drawing 9 is the structure diagram of the utility model embodiment prelocalization seat；
Attached drawing 10 is the structure diagram of the utility model embodiment pre-positioning block；
Attached drawing 11 is the use state reference chart at another visual angle of the utility model embodiment.
In the figures above：1. bit leg；2. datum level；3. the palm back of the body；4. axle journal；5. palm back of the body outer circle；Concave plane in 6.；It is 7. big
Axis；8. axis；9. small axis；10. two stop face；11. shank；12. pedestal；13. fore-stock；14. lower carriage；15. after-poppet；16.
Prelocalization seat；17. pre-positioning block；18.V shape locating grooves；19. the first U-shaped escape groove；20. the second U-shaped escape groove；21. positioning
Face；22. lower push rod；23. pushing rod；24. rear jacking block；25. positioning convex platform；26.U shape screw rod mounting grooves；2a, interarea；2b, side
Face；2c, lateral surface.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment：Referring to shown in attached drawing 5~11, a kind of bit leg finish-milling clamp for machining, including a pedestal 12,12 water of pedestal
Calm down on the microscope carrier of lathe, and can be driven and be overturn by microscope carrier；On the pedestal 12 by from front to back sequence according to
It is secondary to be provided with fore-stock 13, lower carriage 14 and after-poppet 15, three can the adjustment of displacement position on pedestal 12 along the longitudinal direction, with
The bit leg 1 of different specification size is adapted to, and three is secured by bolts in the upper surface of pedestal 12.
The bit leg 1 is horizontally positioned in its datum level 2 on three stents upward, and the axle journal 4 of bit leg is by the fore-stock
13 positioning, the palm back of the body 3 of bit leg are positioned by the lower carriage 14, and the shank 11 of bit leg is positioned by the after-poppet 15.Wherein, it is described
The both sides that datum level 2 includes an interarea 2a, two sides 2b and two lateral surface 2c, the interarea 2a are the two side 2b, two
The outside of side 2b is respectively the two lateral surface 2c.When bit leg 1 is positioned by fixture, the datum level 2 is with its interarea 2a courts
Upper setting, interarea 2a is parallel with horizontal plane at this time.When 1 finish-milling of bit leg is processed, the interarea 2a of bit leg datum level 2 is processed first,
Later, overturning pedestal 12 4 times respectively, to be processed respectively to datum level 2 remaining two sides 2b and two lateral surface 2c.
The fore-stock 13 is made of prelocalization seat 16 and pre-positioning block 17, and the pre-positioning block 17 is fixedly arranged on described preceding fixed
16 top of position seat；The top of the prelocalization seat 16 is equipped with V-arrangement locating groove 18, and the first U is formed in the pre-positioning block 17
Shape escape groove 19, the second U-shaped escape groove 20 and positioning surface 21；The V-arrangement locating groove 18 against positioning bit leg journel 4 big axis
7, the first U-shaped escape groove 19 avoids the axis 8 of bit leg journel 4, and the second U-shaped escape groove 20 avoids bit leg journel 4
Small axis 9, the positioning surface 21 stop face 10 against the two of positioning bit leg journel 4.
A lower push rod 22 is located on the lower carriage 14, which can relatively described lower carriage along its length
14 do straight-line displacement；It is carried on the back in 3 interior concave plane 6 against the bit leg palm is positioned at the upper end of the lower push rod 22；The lower push rod 22
Center line be located on the axis of bit leg journel 4, can by the two of bit leg journel 4 only face 10 be preferably pushed against fore-stock 13
On positioning surface 21.
A pushing rod 23 is located in the after-poppet 15, the pushing rod 23 is horizontally disposed, can be along the longitudinal direction with respect to institute
It states after-poppet 15 and does straight-line displacement；A rear jacking block 24 is additionally provided on the after-poppet 15, which slides in front-rear direction
It is set to the top of the after-poppet 15；The front end of the pushing rod 23 against the rear end face for being positioned at the rear jacking block 24, after
The front end face of jacking block 24 is contacted more against the rear end face for being positioned at bit leg shank 11 by rear jacking block 24 with the face of bit leg shank 11
Achieve the purpose that well to push against positioning.
Wherein, the lower surface of the pedestal 12 is equipped with downwards a positioning convex platform 25, for the microscope carrier of connecting machine tool, the bottom
Multiple U-shaped screw rod mounting grooves 26 are further opened on seat 12, the microscope carrier of lathe is fixed on for passing through screw rod by pedestal 12.
The utility model positions bit leg 1 in a manner that the big axis 7, two for positioning bit leg 1 stops face 10,11 rear end face of shank.
Clamping method is：
First, bit leg 1 is positioned on fixture, the 2 interarea 2a of datum level of bit leg is upward；The big axis 7 of bit leg is made to be positioned with V-arrangement
Card slot 18 is close, and by manual pre-screwing lower push rod 22, so as to make two on bit leg journel 4 to stop on face 10 and pre-positioning block 17
Positioning surface 21 be pre-positioned；
Further, pushing rod 23 is tightened manually, and the top of pushing rod 23 is made to be contacted with the cambered surface that holds out against in rear jacking block 24；
Further, the front end face in rear jacking block 24 is contacted and held out against with the rear end face of bit leg shank 11, make bit leg
Big axis 7 is bonded completely with V-arrangement locating groove 18, has been entirely limited Z-direction rotational freedom at this time；
Finally, lower push rod 22 is tightened manually, bit leg 1 is made to be completely fixed clamping, so as to limit it in the X, Y, Z direction
Mobile and rotation degree of freedom.
Only face, " one axis of two sides " positioning method of bit leg shank rear end face are fixed using the big axis of bit leg, two for the utility model
Position bit leg, and pass through lower push rod, pushing rod cooperation application coupling mechanism force, bit leg can be made to position and clamp completely, realize primary dress
Folder, finish-milling bit leg datum level（Five faces）.After the utility model solves bit leg heat treatment, generating heat-treatment distortion leads to bit leg
Axle journal changes relative to the bulk of datum level, and fitted position can not meet asking for design requirement after causing the assembling of three pieces bit leg
Topic has reached neither influence bit bearing service life, can also meet every fitted position required precision after the assembling of three pieces bit leg
Purpose.Simple with using, processing quality is stablized, and manufacturing expense is low, it is high in machining efficiency the advantages that.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, can not the scope of protection of the utility model be limited with this.
It is all according to the spirit of the present invention substantially equivalent change or modification for being made, should all cover the scope of protection of the utility model it
It is interior.
Claims (5)
1. a kind of bit leg finish-milling clamp for machining, it is characterised in that：
Including a pedestal, fore-stock, lower carriage and after-poppet are disposed with by sequence from front to back on the pedestal；
The bit leg is horizontally positioned in its benchmark on three stents up, and the axle journal of bit leg is positioned by the fore-stock, bit leg
The palm back of the body positioned by the lower carriage, the shank of bit leg is positioned by the after-poppet；Wherein,
Locating groove, the first escape groove, the second escape groove and positioning surface are offered in the fore-stock；The locating groove against
The big axis of bit leg journel is positioned, first escape groove avoids the axis of bit leg journel, and second escape groove avoids bit leg axis
The small axis of neck, the positioning surface stop face against the two of positioning bit leg journel；
A lower push rod is located on the lower carriage, which can do straight line position by relatively described lower carriage along its length
It moves；The upper end of the lower push rod is slapped against bit leg is positioned in the interior concave plane of the back of the body；
A pushing rod is located in the after-poppet, which is horizontally disposed with, and can do relatively described after-poppet along the longitudinal direction
Straight-line displacement；The front end of the pushing rod is opposite against the rear end face for being positioned at bit leg shank.
2. fixture according to claim 1, it is characterised in that：The fore-stock is made of prelocalization seat and pre-positioning block,
The pre-positioning block is fixedly arranged on above the prelocalization seat；The locating groove is V-arrangement locating groove, set on the prelocalization seat
Top；First escape groove is the first U-shaped escape groove, and second escape groove is the second U-shaped escape groove, and the first U-shaped is kept away
Slot, the second U-shaped escape groove and the positioning surface is allowed to be both formed in the pre-positioning block.
3. fixture according to claim 1, it is characterised in that：The center line of the lower push rod is located at the axis of bit leg journel
On.
4. fixture according to claim 1, it is characterised in that：A rear jacking block is additionally provided on the after-poppet, the rear jacking block
The top of the after-poppet is slideably positioned in front-rear direction；The front end of the pushing rod is against after being positioned at the rear jacking block
End face, the front end face of rear jacking block is against the rear end face for being positioned at bit leg shank.
5. fixture according to claim 1, it is characterised in that：The lower surface of the pedestal is equipped with downwards a positioning convex platform,
Multiple screw rod mounting grooves are further opened on the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644419.6U CN207577898U (en) | 2017-11-30 | 2017-11-30 | A kind of bit leg finish-milling clamp for machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644419.6U CN207577898U (en) | 2017-11-30 | 2017-11-30 | A kind of bit leg finish-milling clamp for machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207577898U true CN207577898U (en) | 2018-07-06 |
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ID=62734994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721644419.6U Active CN207577898U (en) | 2017-11-30 | 2017-11-30 | A kind of bit leg finish-milling clamp for machining |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015456A (en) * | 2018-07-30 | 2018-12-18 | 天津立林钻头有限公司 | Bit leg special measuring tool balances fixed device |
| CN112828636A (en) * | 2021-01-22 | 2021-05-25 | 苏州赛莱科斯工具有限公司 | Gripper for finish turning of bit leg |
| CN114273941A (en) * | 2021-12-29 | 2022-04-05 | 苏州思丹孚钻具有限公司 | Multi-angle self-adjusting axial positioning device and method for bit leg |
| CN114714117A (en) * | 2022-04-18 | 2022-07-08 | 西南石油大学 | Polytypic palm axle journal texture adds clamping apparatus |
| CN116551409B (en) * | 2023-07-10 | 2023-09-08 | 通用技术集团机床工程研究院有限公司 | Numerical control vertical lathe with tail table and bit leg processing method |
-
2017
- 2017-11-30 CN CN201721644419.6U patent/CN207577898U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015456A (en) * | 2018-07-30 | 2018-12-18 | 天津立林钻头有限公司 | Bit leg special measuring tool balances fixed device |
| CN109015456B (en) * | 2018-07-30 | 2023-11-17 | 天津立林钻头有限公司 | Balanced fixing device of special measuring tool of bit leg |
| CN112828636A (en) * | 2021-01-22 | 2021-05-25 | 苏州赛莱科斯工具有限公司 | Gripper for finish turning of bit leg |
| CN114273941A (en) * | 2021-12-29 | 2022-04-05 | 苏州思丹孚钻具有限公司 | Multi-angle self-adjusting axial positioning device and method for bit leg |
| CN114273941B (en) * | 2021-12-29 | 2023-11-21 | 苏州思丹孚钻具有限公司 | Multi-angle self-adjusting axial positioning device and method for bit leg |
| CN114714117A (en) * | 2022-04-18 | 2022-07-08 | 西南石油大学 | Polytypic palm axle journal texture adds clamping apparatus |
| CN116551409B (en) * | 2023-07-10 | 2023-09-08 | 通用技术集团机床工程研究院有限公司 | Numerical control vertical lathe with tail table and bit leg processing method |
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