CN205551168U - CNC tube bending machine is with interior pushing -type clamping device of removable chuck - Google Patents
CNC tube bending machine is with interior pushing -type clamping device of removable chuck Download PDFInfo
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- CN205551168U CN205551168U CN201620372118.1U CN201620372118U CN205551168U CN 205551168 U CN205551168 U CN 205551168U CN 201620372118 U CN201620372118 U CN 201620372118U CN 205551168 U CN205551168 U CN 205551168U
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Abstract
The utility model discloses a CNC tube bending machine is with interior pushing -type clamping device of removable chuck belongs to the CNC tube bending machine field, and it has solved present for the CNC tube bending machine among clamping device collet structure as an organic whole, is difficult to change, and a collet can only correspond centre gripping specification pipe fitting, has limited the problem of production efficiency's improvement. The utility model discloses a pneumatic cylinder, the pneumatic cylinder include cylinder body that cylinder body anterior segment and cylinder body back end constitute, arrange the inside piston rod of cylinder body in and set up in the fuel feeding seat of cylinder body back end rear end, the piston rod front end be provided with and interpolate the cover, set front end inner chamber that interpolates be provided with the collet, the collet inner chamber be provided with detachable chuck inner core, chuck inner core middle part be provided with the pipe fitting centre gripping hole that is used for the centre gripping pipe fitting. The utility model discloses a to the improvement of chuck, make it to be applicable to simultaneously the pipe fitting of the multiple diameter specification of centre gripping, improved production efficiency greatly.
Description
Technical field
This utility model belongs to CNC tube bending machine field, specifically, relates to a kind of CNC tube bending machine and pushes away in replaceable chuck
Formula clamping device.
Background technology
CNC tube bending machine can carry out a bending radius (single mode) in the cold state to pipe fitting or two bending radius (bimodulus) twine
Wound bending, is widely used in various pipe fittings and the bending of wire rod of the industry such as automobile, air-conditioning.
CNC tube bending machine was in operation with clamping device in the past, there is bend pipe when clamping tight and easily occurs loosening, pipe fitting and clamp
Device easily produces serious sliding phenomenon and with the damage to pipe fitting outward appearance, and clamps too tight easily damage pipe fitting and generation
Improper deformation, and clamping device self can not rotate, causing curved pipe fitting is not absolute streamlined at bending part,
The bend pipe processed inharmonious with automobile entirety in appearance, injury region hydraulic performance decline, perishable causes shorten service life to ask
Topic, in order to solve the problems referred to above, Chinese Patent Application No. 201310659419.3, the patent in publication date on February 19th, 2014
File, discloses the interior pushing-type clamping device of 3 D stereo corner clamp in a kind of CNC tube bending machine, belongs to CNC tube bending machine neck
Territory.It includes collet, also include top fixed cover, fixed sleeves, hydraulic pressure outer shell, bearing, interior pushing sleeve, hydraulic pressure inner casing,
First hydraulic cavities and the second hydraulic cavities, described top fixed cover, fixed sleeves, hydraulic pressure outer shell, bearing, collet, interior
Pushing sleeve, hydraulic pressure inner casing, the first hydraulic cavities and the second hydraulic cavities are all cyclically symmetric structure, have a common central axis, interior
Portion is collectively forming a clamping inner chamber.The setting of these parts and assembly relation so that this invention, when clamping pipe fitting, is held very much
Clamping force easy to control, to pipe fitting fanout free region, it is ensured that move forward steadily the movement of interior pushing sleeve and collet during clamping
Shrink, it is to avoid movement is uneven to be caused disfiguring workpiece and slides.Disclosed in this patent of invention, the operation principle of clamping device is:
First pipe fitting is inserted clamping inner chamber, after now choosing clip position, by hydraulic controller to second from collet porch
In hydraulic cavities oil-filled, under the effect of oil pressure, hydraulic pressure inner casing is moved to the left, hydraulic pressure inner casing promote in pushing sleeve be also moved to the left, with
Time interior pushing sleeve left internal side compressing collet shrink, clamp pipe fitting.When bend pipe, this invention can rotate self, can be very
Good release internal stress, the most fricton-tight phenomenon, the pipe fitting processed is streamlined good, not damaged, and machining accuracy is high.Take
Being that to first pass through hydraulic controller oil-filled in the first hydraulic cavities during pipe fitting, under the effect of oil pressure, hydraulic pressure inner casing moves right, band
In dynamic, pushing sleeve also moves right, and the now elastic return of collet unclamps pipe fitting automatically.
But technical scheme disclosed in above-mentioned patent there is also following defect: collet is structure as a whole, it is not easy to change, a kind of
Collet corresponding can only clamp a kind of specification pipe fitting, limits the raising of production efficiency.
Summary of the invention
1, problem to be solved
Being structure as a whole for existing CNC tube bending machine clamping device Elastic chuck, it is not easy to change, a kind of collet is only
Corresponding can clamp a kind of specification pipe fitting, the problem limiting the raising of production efficiency, this utility model provides a kind of CNC tube bending machine
With the interior pushing-type clamping device of replaceable chuck, by the improvement to chuck, enable to be simultaneously suitable for clamping multiple diameter rule
The pipe fitting of lattice, substantially increases production efficiency.
2, technical scheme
For solving the problems referred to above, this utility model adopts the following technical scheme that.
A kind of CNC tube bending machine interior pushing-type clamping device of replaceable chuck, including hydraulic cylinder, described hydraulic cylinder includes cylinder body
Leading portion and the cylinder body of cylinder body back segment composition, be placed in cylinder interior piston rod and be arranged at cylinder body back segment rear end for font；Institute
The piston rod front end stated is provided with interior pushing sleeve；Described interior pushing sleeve front end inner chamber is provided with collet, in described collet
Chamber is provided with dismountable chuck inner core；The pipe fitting clamping hole for clamping pipe fitting it is provided with in the middle part of described chuck inner core.
Preferably, in described chuck, outer core is provided with hole, location；It is provided with on described collet with to position hole corresponding
Chuck inner core fixing hole；Described chuck inner core is fixing in stretching into hole, location by bearing pin or bolt through chuck inner core fixing hole
On collet.
Preferably, described chuck inner core is axially spaced is provided with elastic crack.
Preferably, described collet limits axial displacement by top fixed cover.
Preferably, described interior pushing sleeve and piston rod are threaded connection.
Preferably, described cylinder body leading portion and the junction of cylinder body back segment are provided with the first hydraulic cavities；Described piston rod rear end end
Face and cylinder body back segment junction are provided with the second hydraulic cavities.
Preferably, the described font that supplies is connected for rotatory sealing between cylinder body back segment.
Preferably, described is provided with two fuel oil supply nozzles on font, is provided with between one of them fuel oil supply nozzle and the first hydraulic cavities
First hydraulic circuit, is provided with the second hydraulic circuit between another fuel oil supply nozzle and the second hydraulic cavities.
Preferably, the described font that supplies is fixed relative to bending machine fuselage；Described hydraulic cylinder can rotate relative to bending machine fuselage
Motion.
Preferably, described hydraulic cylinder rear end is connected with electric rotary body.
3, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) a kind of CNC tube bending machine of the present utility model passes through to set in collet with the interior pushing-type clamping device of replaceable chuck
Put detachable chuck inner core, enable to be applicable to the pipe fitting of multiple diameter specification, have more than the product before improving
High production efficiency, reduces cost of manufacture simultaneously, makes the collet that only need to produce a kind of specification when producing many with corresponding
Plant chuck inner core and can meet the production of plurality of specifications pipe fitting, be greatly saved cost of manufacture；
(2) chuck inner core of the present utility model is fixed in stretching into hole, location by bearing pin or bolt through chuck inner core fixing hole
On collet, convenient dismounting, replacing, improve fast pace production efficiency；
(3) this utility model chuck inner core is axially spaced is provided with elastic crack, makes pipe fitting more firm when clamping, it is ensured that
Bend pipe work is more stable；
(4) this utility model collet limits axial displacement by top fixed cover, it is ensured that clamping effect is stable, reliable；
(5) in this utility model, pushing sleeve and piston rod are threaded connection, and easy disassembly, replacing are safeguarded；
(6) junction of this utility model cylinder body leading portion and cylinder body back segment is provided with the first hydraulic cavities, described piston rod rear end end
Face and cylinder body back segment junction are provided with the second hydraulic cavities, it is possible to guaranteeing hydraulic cylinder life and serviceability premise steady in a long-term
The most effectively reduce manufacturing cost；
(7) this utility model is connected for rotatory sealing for font between cylinder body back segment, it is ensured that hydraulic cylinder operationally with elastic clip
Head synchronous rotary will not occur oil leakage phenomenon；
(8) this utility model is connected with for the fuel oil supply nozzle on font by the first hydraulic circuit, the second hydraulic circuit, simple in construction,
It is capable of oil cylinder quick acting；
(9) a kind of CNC tube bending machine of the present utility model interior pushing-type clamping device of replaceable chuck can be filled by electronic rotation
Put driving to rotate, make pipe fitting rotate while bend pipe, can the effectively extruding of release plumbing component and tensile stress, raising bending quality；
(10) this utility model simple in construction, reasonable in design, it is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model；
Fig. 2 is the structural representation of chuck inner core in this utility model.
In figure: 1, top fixed cover；2, cylinder body leading portion；3, interior pushing sleeve；4, piston rod；5, cylinder body back segment；6, elastic
Chuck；61, chuck inner core fixing hole；7, chuck inner core；71, pipe fitting clamping hole；72, elastic crack；73, hole, location；
8, the first hydraulic cavities；81, the first hydraulic circuit；9, the second hydraulic cavities；91, the second hydraulic circuit；10, for font (10).
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is further described below.
Embodiment 1
As it is shown in figure 1, a kind of CNC tube bending machine interior pushing-type clamping device of replaceable chuck, including hydraulic cylinder, hydraulic cylinder bag
After including cylinder body leading portion 2 and the cylinder body of cylinder body back segment 5 composition, being placed in the piston rod 4 of cylinder interior and be arranged at cylinder body back segment 5
That holds supplies font 10；Piston rod 4 front end is threaded connection and is provided with interior pushing sleeve 3；Interior pushing sleeve 3 front end inner chamber is provided with elasticity
Chuck 6, collet 6 limits axial displacement by top fixed cover 1；Collet 6 inner chamber is provided with chuck inner core 7；Folder
Head inner core 7 outer wall is provided with hole 73, location；The chuck inner core fixing hole 61 corresponding with positioning hole 73 it is provided with on collet 6；
Chuck inner core 7 is fixed on collet 6 in stretching into hole 73, location by bearing pin or bolt through chuck inner core fixing hole 61,
So manufacture collet 6, multiple chuck inner core 7 can meet the pipe fitting processing of multiple diameter specification, presss from both sides simultaneously
Head inner core 7 can improve production efficiency with fast assembling-disassembling；As in figure 2 it is shown, be provided with for clamping pipe in the middle part of chuck inner core 7
The pipe fitting clamping hole 71 of part, and axially spaced it is provided with elastic crack 72.
The operation principle of the present embodiment is: according to pipe fitting diameter, installs corresponding chuck inner core, pipe fitting is put into chuck
After core, start hydraulic power unit, by the second hydraulic circuit to the second hydraulic cavities press-in fluid, subsequently piston rod action, in promoting
Pushing sleeve moves to collet direction, and collet is contacting with interior pushing sleeve under ramp effect to axis contraction, forces chuck inner core
Clamping pipe fitting；After pipe fitting has bent, by the first hydraulic circuit to the first hydraulic cavities press-in fluid, simultaneously in the second hydraulic cavities
Fluid refluxes, and piston rod pulls interior pushing sleeve away from collet, makes collet unclamp, and pipe fitting can take off.
A kind of CNC tube bending machine in the present embodiment can by arranging in collet with the interior pushing-type clamping device of replaceable chuck
The chuck inner core of dismounting and change, enables to be applicable to the pipe fitting of multiple diameter specification, has higher than the product before improving
Production efficiency, reduces cost of manufacture simultaneously, makes and only need to produce the collet of a kind of specification and corresponding multiple folder when producing
Head inner core can meet the production of plurality of specifications pipe fitting, is greatly saved cost of manufacture.
Embodiment 2
As it is shown in figure 1, a kind of CNC tube bending machine interior pushing-type clamping device of replaceable chuck, same as in Example 1, institute is not
With: fix for the relative bending machine fuselage of font 10；Hydraulic cylinder rear end is connected with electric rotary body, make hydraulic cylinder relative to
Bending machine fuselage can be with rotary motion；It is connected for rotatory sealing between cylinder body back segment 5 for font 10；Cylinder body leading portion 2 and cylinder body
The junction of back segment 5 is provided with the first hydraulic cavities 8；Piston rod 4 rear end end face and cylinder body back segment 5 junction are provided with the second liquid
Pressure chamber 9；It is provided with two fuel oil supply nozzles on font 10, between one of them fuel oil supply nozzle and the first hydraulic cavities 8, is provided with the first liquid
Force feed road 81, is provided with the second hydraulic circuit 91 between another fuel oil supply nozzle and the second hydraulic cavities 9.
Due to pipe fitting, when cold bend(ing), curved inner wall is squeezed, curved outer wall is stretched, if the most uneven, inside and outside should
Power has big difference, and tubing products curved outer wall is easily broken, and inwall easily produces fold, has a strong impact on product quality, even makes
Product rejection, therefore, in the present embodiment hydraulic cylinder operationally with collet, pipe fitting synchronous rotary, it is possible to effectively discharge pipe
During part bending, the stress difference of outside in bending, improves the bending machining quality of pipe fitting；The hydraulic structure of the present embodiment is able to ensure that
Not easy oil leakage when hydraulic cylinder synchronous rotates, improves stabilization of equipment performance and reliability, extends service life.
Claims (10)
1. a CNC tube bending machine interior pushing-type clamping device for replaceable chuck, including hydraulic cylinder, described hydraulic cylinder includes cylinder
Cylinder body, the piston rod (4) being placed in cylinder interior that body leading portion (2) and cylinder body back segment (5) form and be arranged at cylinder body back segment
(5) confession font (10) of rear end；Described piston rod (4) front end is provided with interior pushing sleeve (3)；Described interior pushing sleeve (3)
Front end inner chamber is provided with collet (6), it is characterised in that: described collet (6) inner chamber is provided with dismountable chuck
Inner core (7)；Described chuck inner core (7) middle part is provided with pipe fitting clamping hole (71) for clamping pipe fitting.
A kind of CNC tube bending machine the most according to claim 1 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described chuck inner core (7) outer wall is provided with hole, location (73)；It is provided with and positions hole (73) on described collet (6)
Corresponding chuck inner core fixing hole (61)；Described chuck inner core (7) passes chuck inner core fixing hole by bearing pin or bolt
(61) it is fixed on collet (6) in stretching into hole, location (73).
A kind of CNC tube bending machine the most according to claim 2 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described chuck inner core (7) is axially spaced is provided with elastic crack (72).
4. according to the interior pushing-type clamping device of replaceable chuck of a kind of CNC tube bending machine described in claim 1,2 or 3, its
It is characterised by: described collet (6) limits axial displacement by top fixed cover (1).
5. according to the interior pushing-type clamping device of replaceable chuck of a kind of CNC tube bending machine described in claim 1,2 or 3, its
It is characterised by: described interior pushing sleeve (3) and piston rod (4) are threaded connection.
A kind of CNC tube bending machine the most according to claim 5 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described cylinder body leading portion (2) and the junction of cylinder body back segment (5) are provided with the first hydraulic cavities (8)；Described piston rod (4)
Rear end end face and cylinder body back segment (5) junction are provided with the second hydraulic cavities (9).
A kind of CNC tube bending machine the most according to claim 6 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described is connected for rotatory sealing between cylinder body back segment (5) for font (10).
A kind of CNC tube bending machine the most according to claim 7 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described for being provided with two fuel oil supply nozzles on font (10), it is provided with the between one of them fuel oil supply nozzle and the first hydraulic cavities (8)
One hydraulic circuit (81), is provided with the second hydraulic circuit (91) between another fuel oil supply nozzle and the second hydraulic cavities (9).
A kind of CNC tube bending machine the most according to claim 8 interior pushing-type clamping device of replaceable chuck, it is characterised in that:
Described fixes for font (10) bending machine fuselage relatively；Described hydraulic cylinder can be with rotary motion relative to bending machine fuselage.
A kind of CNC tube bending machine the most according to claim 9 interior pushing-type clamping device of replaceable chuck, its feature exists
In: described hydraulic cylinder rear end is connected with electric rotary body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620372118.1U CN205551168U (en) | 2016-04-27 | 2016-04-27 | CNC tube bending machine is with interior pushing -type clamping device of removable chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620372118.1U CN205551168U (en) | 2016-04-27 | 2016-04-27 | CNC tube bending machine is with interior pushing -type clamping device of removable chuck |
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| Publication Number | Publication Date |
|---|---|
| CN205551168U true CN205551168U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620372118.1U Active CN205551168U (en) | 2016-04-27 | 2016-04-27 | CNC tube bending machine is with interior pushing -type clamping device of removable chuck |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470931A (en) * | 2017-09-21 | 2017-12-15 | 安徽力成机械装备有限公司 | A kind of deep hole machining hydroelastic system fixture |
| CN107755563A (en) * | 2017-12-18 | 2018-03-06 | 张家港兴宇机械制造有限公司 | Pipe fitting clamping mechanism in bending machine |
| CN110918728A (en) * | 2019-12-13 | 2020-03-27 | 上海豪德热能科技有限公司 | Top pier clamping device of numerical control pipe bender |
| CN111974889A (en) * | 2019-05-21 | 2020-11-24 | 乔升机器股份有限公司 | Pipe fitting end clamping device |
| CN115156964A (en) * | 2022-07-06 | 2022-10-11 | 北平机床(浙江)股份有限公司 | Chuck clamping mechanism |
-
2016
- 2016-04-27 CN CN201620372118.1U patent/CN205551168U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470931A (en) * | 2017-09-21 | 2017-12-15 | 安徽力成机械装备有限公司 | A kind of deep hole machining hydroelastic system fixture |
| CN107755563A (en) * | 2017-12-18 | 2018-03-06 | 张家港兴宇机械制造有限公司 | Pipe fitting clamping mechanism in bending machine |
| CN107755563B (en) * | 2017-12-18 | 2024-05-14 | 张家港兴宇机械制造有限公司 | Pipe fitting clamping mechanism in pipe bending machine |
| CN111974889A (en) * | 2019-05-21 | 2020-11-24 | 乔升机器股份有限公司 | Pipe fitting end clamping device |
| CN110918728A (en) * | 2019-12-13 | 2020-03-27 | 上海豪德热能科技有限公司 | Top pier clamping device of numerical control pipe bender |
| CN115156964A (en) * | 2022-07-06 | 2022-10-11 | 北平机床(浙江)股份有限公司 | Chuck clamping mechanism |
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