CN207577900U - The bit leg drilling and milling fixture of tricone bit - Google Patents
The bit leg drilling and milling fixture of tricone bit Download PDFInfo
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- CN207577900U CN207577900U CN201721645474.7U CN201721645474U CN207577900U CN 207577900 U CN207577900 U CN 207577900U CN 201721645474 U CN201721645474 U CN 201721645474U CN 207577900 U CN207577900 U CN 207577900U
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Abstract
A kind of bit leg drilling and milling fixture of tricone bit, including frame body, frame body includes bottom plate and polylith side plate, and then forms bit leg clamping space；Vee-block is located in space, forepart is positioned with respect to front side board, and side is positioned with respect to frame body left side plate, and rear portion offers V-shaped groove for positioning bit leg；Two datum levels of bit leg fit in two inclined-planes of V-shaped groove, and limitation bit leg is rotated around X-axis, Y-axis and Z axis；Inclined convex is equipped with positioning pin, and datum level is concavely provided with datum hole, the two insert group cooperation limitation displacement of the bit leg along Y-axis and the displacement along Z axis；The length direction of V-shaped groove has the first angle with bottom plate, forms when bit leg is positioned in V-shaped groove, and the axial direction of bit leg journel is Z-direction；Mandril is equipped in the back side panel of frame body, front end acts on the skirt section of bit leg, and two inclined-planes coordinate the mandril that can limit displacement of the bit leg along X-axis.The utility model uses one finger setting bit leg of two sides, and cooperation mandril can make bit leg position and clamp completely.
Description
Technical field
The utility model is related to a kind of fixtures, and in particular to a kind of bit leg drilling and milling fixture of tricone bit.
Background technology
Tricone bit is using a kind of wide drilling bit, is usually respectively assembled in three pieces bit leg by three gear wheels
On, then three pieces bit leg assembly welding formed.As shown in figures 1-4, bit leg part is a kind of part of special construction, during processing,
Must in palm back of the body outer circle 20 milling pressure thrust block plane 21, on axle journal 22 milling two stop face air drain 25, shirttail 27 and bore left and right
Venthole 26.
However, the installation way of existing bit leg milling and Drilling operation, typically first on a set of Milling Process fixture
Milling pressure thrust block plane 21 is carried out, then milling two stops face air drain 25, shirttail 27 on the second sleeve clamp, finally in third set
Left and right venthole 26 is bored on fixture, but as the processing of bit leg class part, it not only needs to ensure the opposite of each milling position
Size will also ensure position, centre-to-centre spacing and the depth of left and right venthole, therefore, above-mentioned to be using the processing method of multiple clamping
It is difficult to ensure that processing dimension, the clamping for particularly boring left and right venthole 26 is difficult to fixed accurate location so that left and right venthole
26 centre-to-centre spacing dimensioneds are unstable, and then influence properties of product, and the process-cycle is long, and labor intensity is big.
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 drilling and milling fixtures of tricone bit.
In order to achieve the above objectives, the technical solution adopted in the utility model is：
A kind of bit leg drilling and milling fixture of tricone bit, including a frame body, the frame body includes bottom plate and is connected with
In the polylith side plate on the bottom plate, each side plate is connected two-by-two, in forming a bit leg clamping space on frame body；
Wherein, a vee-block, the front side of the relatively described frame body in forepart of the vee-block are located in the bit leg clamping space
Plate against positioning, the both sides of vee-block with respect to frame body left and right directions both side plate against positioning；The rear portion of the vee-block opens up
Have a V-shaped groove, the notch of the V-shaped groove backward, for positioning the bit leg；When bit leg is positioned in the V-shaped groove, the tooth
Two datum levels of the palm fit in two inclined-planes of the V-shaped groove；It designs whereby, two inclined-planes limit the bit leg around X-axis simultaneously
Rotation, rotation and rotation about the z axis around Y-axis；
The datum level of at least one of two inclined-planes towards the bit leg is convexly equipped with a positioning pin, right on the datum level
Should positioning pin be recessed with a datum hole, when the bit leg is positioned in the V-shaped groove, the positioning pin and the datum hole
Insert group coordinates；It designs whereby, the positioning pin limits displacement of the bit leg along Y-axis and the displacement along Z axis simultaneously；
The length direction of the V-shaped groove and the bottom plate of the frame body have one first angle, form when bit leg is positioned at institute
When stating in V-shaped groove, the axial direction of bit leg journel is Z-direction；
Wherein, a mandril is equipped in the back side panel of the frame body, the front end of the mandril acts on the skirt section of the bit leg；
It designs whereby, two inclined-planes coordinate the mandril that can limit displacement of the bit leg along X-axis.
Related content in above-mentioned technical proposal is explained as follows：
1. in said program, a compact heap is additionally provided in the bit leg clamping space, which is rotatably dispose in described
On the back side panel of frame body；The mandril is located above the run-on point of the compact heap, after the front end of mandril acts on compact heap
Portion drives compact heap to rotate clockwise forward, so against and compress the skirt section of the bit leg, pressed from both sides with realizing in Z-direction
The tight bit leg.
2. in said program, further including a vee-block backing plate and an insert, it is both positioned at the bit leg clamping of the frame body
In space, and the left and right sides of the vee-block is respectively in, for limiting displacement of the vee-block in Y direction.Whether V is set
Shape block backing plate and insert are determined that the size of vee-block is then determined by the dimensions of bit leg to be mounted by the dimensions of vee-block
It is fixed.
3. in said program, backing plate before further including one, the preceding backing plate pad is set on the front side board of the vee-block and the frame body
Between.Whether before setting backing plate is equally determined by the dimensions of vee-block.
4. in said program, the front side board inclined design forms one second angle with the bottom plate, second angle with
The differential seat angle of first angle is 0~10 degree.The design of differential seat angle whereby can be the vee-block in bit leg clamping space
It provides certain assembling spacious amount, the adverse effect brought finally is accurately positioned to bit leg with the mismachining tolerance for overcoming bit leg itself.
5. in said program, polylith reinforcing rib is provided between the front side board and the bottom plate, with to inclined front side board
It plays a supporting role.
6. in said program, damping striped is additionally provided on two inclined-planes of the vee-block, to be promoted when bit leg positions
Stability.
7. in said program, after fixture positions bit leg, bit leg can carry out drilling and milling, wherein, the vehicle of drilling and milling
Bed cutter is horizontally disposed, that is, feeds along X-axis, is rotated around X-axis.Specific procedure of processing is as follows：
The first step, two only face air drain and shirttails on milling axle journal；
Second step is rotated fixture twice, to bore left and right venthole on bit leg respectively；
Third walks, then fixture is rotated 180 ° relative to the state of the first step, and the milling palm carries on the back the pressure thrust block plane in outer circle.
Compared to existing technologies, the utility model has the following advantages：
First, Set and Positioning stability is high, positions bit leg using " selling on two sides one " positioning method, cooperation mandril compresses bit leg skirt
Portion can make bit leg position and clamp completely；
2nd, processing quality is stablized, and clamping is difficult to be accurately positioned when solving brill left and right venthole, left and right venthole center
Away from dimensioned it is unstable the problem of, can guarantee the relative size of each milling position；
3rd, it is high in machining efficiency, precision is high, only once whole drilling and milling processes at each position of bit leg can be completed in clamping, avoid
The processing method of conventional multi clamping easily leads to drilling, milling leads to the problem of clamping accumulated error；
4th, structure is relatively easy, reduces manufacture, the maintenance cost of fixture；Reduce management and human resources configuration into
This；
5th, using simple, field worker is facilitated to use, shortens the drilling and milling period of bit leg.
Description of the drawings
Attached drawing 1 is the structure diagram of bit leg part；
Attached drawing 2 be Fig. 1 in A to structure diagram；
Attached drawing 3 be Fig. 1 in B to structure diagram；
Attached drawing 4 be Fig. 3 in A-A to diagrammatic cross-section；
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（Front side visual angle）；
Attached drawing 7 is the use state of the utility model embodiment with reference to figure two（Rear side visual angle）；
The cross-sectional view at side visual angle when attached drawing 8 is used for the utility model embodiment；
Attached drawing 9 is the use state of the utility model embodiment with reference to figure three（Front side visual angle）.
In the figures above：1. frame body；2. bottom plate；3. bit leg clamping space；4.V shape blocks；5. front side board；6. left and right directions
Both side plate；7.V shape slots；8. bit leg；9. inclined-plane；10. positioning pin；11. back side panel；12. mandril；13.V shape block backing plates；14. edge
Block；Backing plate before 15.；16. compact heap；17. reinforcing rib；18. damp striped；19. run-on point；20. palm back of the body outer circle；21. press thrust
Block plane；22. axle journal；23. datum hole；24. datum level；25. two stop face air drain；26. left and right venthole；27. shirttail；28. skirt
Portion.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment：Referring to shown in attached drawing 5 ~ 9, a kind of bit leg drilling and milling fixture of tricone bit, including a frame body 1,
The frame body 1 includes bottom plate 2 and is connected in four blocks of the front, rear, left and right side plate on the bottom plate 2, each two two-phase of side plate
Even, in forming a bit leg clamping space 3 on frame body 1；
Wherein, a vee-block 4 is located in the bit leg clamping space 3, the relatively described frame body 1 in forepart of the vee-block 4
Front side board 5 against positioning, the both sides of vee-block 4 with respect to 1 left and right directions of frame body both side plate 6 against positioning；The vee-block 4
Rear portion offers a V-shaped groove 7, the notch of the V-shaped groove 7 backward, for positioning the bit leg 8；When bit leg 8 is positioned at the V-arrangement
When in slot 7, two datum levels 24 of the bit leg 8 fit in two inclined-planes 9 of the V-shaped groove 7；It designs whereby, two inclined-planes 9 are same
When limit the rotation of the bit leg 8 around X-axis, the rotation around Y-axis and rotation about the z axis；
24 level of a datum level of one of two described inclined-planes 9 towards the bit leg 8 is convexly equipped with a positioning pin 10, the base
The positioning pin 10 is corresponded on quasi- face 24 and is recessed with a datum hole 23, it is described fixed when the bit leg 8 is positioned in the V-shaped groove 7
Position pin 10 coordinates with 23 insert group of datum hole；It designs whereby, the positioning pin 10 limits position of the bit leg 8 along Y-axis simultaneously
Shifting and the displacement along Z axis；
The length direction of the V-shaped groove 7 and the bottom plate 2 of the frame body 1 have one first angle, form when bit leg 8 positions
When in the V-shaped groove 7, the axial direction of bit leg journel 22 is Z-direction；
Wherein, level is equipped with a mandril 12 in the back side panel 11 of the frame body 1, which can be retracted in X-direction,
Its front end acts on the skirt section 28 of the bit leg 8；It designs whereby, two inclined-planes 9 coordinate the mandril 12 that can limit the bit leg 8
Along the displacement of X-axis.
Wherein, a compact heap 16 is additionally provided in the bit leg clamping space 3, which is rotatably dispose in the frame body
On 1 back side panel 11；The mandril 12 is located at 19 top of run-on point of the compact heap 16, and the front end of mandril 12 acts on compression
The rear portion of block 16 drives compact heap 16 to rotate clockwise forward, so against and compress the skirt section 28 of the bit leg 8, with reality
Present Z-direction clamps the bit leg 8.
Wherein, a vee-block backing plate 13 and an insert 14 are further included, the bit leg clamping for being both positioned at the frame body 1 is empty
Between in 3, and the left and right sides of the vee-block 4 is respectively in, for limiting displacement of the vee-block 4 in Y direction.Whether set
Vee-block backing plate 13 and insert 14 are determined that the dimensions of vee-block 4 is then by bit leg 8 to be mounted by the dimensions of vee-block 4
Dimensions determines.
Backing plate 15 before further including one, the preceding pad of backing plate 15 are set between the vee-block 4 and the front side board 5 of the frame body 1.
Whether before setting backing plate 15 is equally determined by the dimensions of vee-block 4.
Wherein, 5 inclined design of front side board forms one second angle, second angle and described the with the bottom plate 2
The differential seat angle of one angle is 0~10 degree.The design of differential seat angle whereby can be that the vee-block 4 provides in bit leg clamping space 3
The spacious amount of certain assembling, to overcome the mismachining tolerance of itself of bit leg 8 that the adverse effect brought finally is accurately positioned to bit leg 8.
Wherein, polylith reinforcing rib 17 is provided between the front side board 5 and the bottom plate 2, to be played to inclined front side board 5
Supporting role.Damping striped 18 is additionally provided on two inclined-planes 9 of the vee-block 4, to promote stability when bit leg 8 positions.
After fixture positions bit leg, bit leg can carry out drilling and milling, wherein, the lathe tools of drilling and milling are set for level
It puts, that is, feed along X-axis, rotated around X-axis.Specific procedure of processing is as follows：
The first step, two only face air drain 25 and shirttails 27 on milling axle journal 22；
Second step is rotated fixture twice, to bore left and right venthole 26 on bit leg respectively；
Third walks, then fixture is rotated 180 ° relative to the state of the first step, and the pressure thrust block that the milling palm is carried on the back in outer circle 20 is put down
Face 21.
Compared to existing technologies, the utility model has the following advantages：
First, Set and Positioning stability is high, positions bit leg using " selling on two sides one " positioning method, cooperation mandril compresses bit leg skirt
Portion can make bit leg position and clamp completely；
2nd, processing quality is stablized, and clamping is difficult to be accurately positioned when solving brill left and right venthole, left and right venthole center
Away from dimensioned it is unstable the problem of, can guarantee the relative size of each milling position；
3rd, it is high in machining efficiency, precision is high, only once whole drilling and milling processes at each position of bit leg can be completed in clamping, avoid
The processing method of conventional multi clamping easily leads to drilling, milling leads to the problem of clamping accumulated error；
4th, structure is relatively easy, reduces manufacture, the maintenance cost of fixture；Reduce management and human resources configuration into
This；
5th, using simple, field worker is facilitated to use, shortens the drilling and milling period of bit leg.
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 (7)
1. a kind of bit leg drilling and milling fixture of tricone bit, it is characterised in that：
Including a frame body, the frame body includes bottom plate and the polylith side plate being connected on the bottom plate, each two two-phase of side plate
Even, in forming a bit leg clamping space on frame body；
Wherein, a vee-block is located in the bit leg clamping space, the front side board of the relatively described frame body in forepart of the vee-block supports
By positioning, the both sides of vee-block with respect to frame body left and right directions both side plate against positioning；The rear portion of the vee-block offers a V
Shape slot, the notch of the V-shaped groove backward, for positioning the bit leg；When bit leg is positioned in the V-shaped groove, the bit leg
Two datum levels fit in two inclined-planes of the V-shaped groove；It designs whereby, two inclined-planes limit the bit leg and turn around X-axis simultaneously
Rotation and rotation about the z axis dynamic, around Y-axis；
The datum level of at least one of two inclined-planes towards the bit leg is convexly equipped with a positioning pin, and being corresponded on the datum level should
Positioning pin is recessed with a datum hole, when the bit leg is positioned in the V-shaped groove, the positioning pin and the datum hole insert group
Cooperation；It designs whereby, the positioning pin limits displacement of the bit leg along Y-axis and the displacement along Z axis simultaneously；
The length direction of the V-shaped groove and the bottom plate of the frame body have one first angle, form when bit leg is positioned at the V-arrangement
When in slot, the axial direction of bit leg journel is Z-direction；
Wherein, a mandril is equipped in the back side panel of the frame body, the front end of the mandril acts on the skirt section of the bit leg；Whereby
Design, two inclined-planes coordinate the mandril that can limit displacement of the bit leg along X-axis.
2. fixture according to claim 1, it is characterised in that：A compact heap is additionally provided in the bit leg clamping space, it should
Compact heap is rotatably dispose on the back side panel of the frame body；The mandril is located above the run-on point of the compact heap, mandril
Front end acts on the rear portion of compact heap, and compact heap is driven to rotate clockwise forward, so against and compress the skirt of the bit leg
Portion.
3. fixture according to claim 1, it is characterised in that：A vee-block backing plate and an insert are further included, is both positioned
In the bit leg clamping space of the frame body, and it is respectively in the left and right sides of the vee-block.
4. fixture according to claim 1, it is characterised in that：Backing plate before further including one, the preceding backing plate pad are set on the V-arrangement
Between the front side board of block and the frame body.
5. fixture according to claim 1, it is characterised in that：The front side board inclined design forms one with the bottom plate
The differential seat angle of second angle, second angle and first angle is 0~10 degree.
6. fixture according to claim 5, it is characterised in that：Polylith reinforcement is provided between the front side board and the bottom plate
Muscle.
7. fixture according to claim 1, it is characterised in that：Amortisseur bar is additionally provided on two inclined-planes of the vee-block
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645474.7U CN207577900U (en) | 2017-11-30 | 2017-11-30 | The bit leg drilling and milling fixture of tricone bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645474.7U CN207577900U (en) | 2017-11-30 | 2017-11-30 | The bit leg drilling and milling fixture of tricone bit |
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| Publication Number | Publication Date |
|---|---|
| CN207577900U true CN207577900U (en) | 2018-07-06 |
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ID=62734905
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721645474.7U Active CN207577900U (en) | 2017-11-30 | 2017-11-30 | The bit leg drilling and milling fixture of tricone bit |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877194A (en) * | 2017-11-30 | 2018-04-06 | 苏州新锐合金工具股份有限公司 | The bit leg of tricone bit bores Milling Machining fixture |
| CN112444181A (en) * | 2020-11-23 | 2021-03-05 | 苏州赛莱科斯工具有限公司 | Device and method for measuring space size of tooth palm |
| 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 |
-
2017
- 2017-11-30 CN CN201721645474.7U patent/CN207577900U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877194A (en) * | 2017-11-30 | 2018-04-06 | 苏州新锐合金工具股份有限公司 | The bit leg of tricone bit bores Milling Machining fixture |
| CN107877194B (en) * | 2017-11-30 | 2024-03-05 | 苏州新锐合金工具股份有限公司 | Bit leg drilling and milling clamp of tricone bit |
| CN112444181A (en) * | 2020-11-23 | 2021-03-05 | 苏州赛莱科斯工具有限公司 | Device and method for measuring space size of tooth palm |
| 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 |
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