CN104589087A - Large-size workpiece interior centering clamping mechanism - Google Patents

Large-size workpiece interior centering clamping mechanism Download PDF

Info

Publication number
CN104589087A
CN104589087A CN201410755461.XA CN201410755461A CN104589087A CN 104589087 A CN104589087 A CN 104589087A CN 201410755461 A CN201410755461 A CN 201410755461A CN 104589087 A CN104589087 A CN 104589087A
Authority
CN
China
Prior art keywords
helical gear
vertical
thread bush
screw rod
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410755461.XA
Other languages
Chinese (zh)
Inventor
曾荣良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING HUANJI LOW CARBON ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd
Original Assignee
CHONGQING HUANJI LOW CARBON ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHONGQING HUANJI LOW CARBON ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd filed Critical CHONGQING HUANJI LOW CARBON ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN201410755461.XA priority Critical patent/CN104589087A/en
Publication of CN104589087A publication Critical patent/CN104589087A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine

Abstract

The invention provides a large-size workpiece interior centering clamping mechanism. A transmission helical gear is driven by a motor and other drive mechanisms to rotate. The transmission helical gear drives a driven helical gear to rotate. Due to the fact that the driven helical gear is connected with a vertical threaded rod through a key and is fixed through a nut, the driven helical gear drives the vertical threaded rod to rotate jointly. Due to the fact that two threaded sleeves connected to the vertical threaded rod in a threaded mode are connected in a guide groove in a sliding mode, the threaded sleeves can only slide up and down in the guide groove under the action of rotation of the vertical threaded rod. Due to the fact that the threaded sleeves make contact with expansion pins in an inclined plane mode, under the action of the threaded sleeves, the expansion pins can stretch out of a body transversely to clamp a large workpiece placed on the body from the interior of the workpiece, and the machining requirement is achieved.

Description

The inner centering and clamping mechanism of large-scale workpiece
Technical field
The present invention relates to a kind of clamping tool for machine work, be specifically related to the inner centering and clamping mechanism of a kind of large-scale workpiece.
Background technology
Fixture adds to be used for rapid fastenings man-hour, makes lathe, cutter, part keep the process unit of correct relative position.Frock clamp is the indispensable parts of machining, machine tool technology at a high speed, efficient, precision, compound, intelligence, environmental protection future development drive under, clamp technology is just towards high-precision, efficient, module, combination, general, economic future development.Jig, is conducive to the machining accuracy, the stabilized product quality that ensure part; Be conducive to raising labour productivity and reducing costs; Be conducive to improving workman's working condition, ensure safety in production; Be conducive to enlarger bed process scope, realize " a tractor serves several purposes ".Fixture is usually by compositions such as setting element (determining the tram of part in fixture), clamping device, tool setting induction element (determine the relative position of cutter and part or guide tool orientation), indexing means (make part can complete the processing of several station in once mounting, have circular index device and rectilinear movement indexing means two class), Connection Element and clamp bodies (clamp base).At present, when machining large workpiece, due to the restriction of part itself, can only clamp from the tapping of inside, cannot from outside clamping work pieces.The size of traditional elastic expansion-sleeve is too little, and intensity is poor, cannot act directly on that workpiece to carry out inner clamps tight.If elastic expansion-sleeve must be adopted to carry out inside clamping, then need the ringfeder of large-size, cause the hardness of ringfeder self comparatively large, need great extruding force just can strut ringfeder, be difficult to realize.
Summary of the invention
The object of the present invention is to provide the inner centering and clamping mechanism of a kind of large-scale workpiece, by structural improvement, directly do not adopt ringfeder, realize the inside centering clamping of large-scale workpiece.
For achieving the above object, technical scheme of the present invention is: the inner centering and clamping mechanism of large-scale workpiece, comprise vertical body, a cavity is offered in described body, a pair intermeshing helical gear is provided with in described cavity, described helical gear comprises horizontal transmission helical gear and vertical driven helical gear, and described driven helical gear is connected to one end of vertical screw rod by key, and the end of described vertical screw rod is provided with fixing driven helical gear nut; Also be provided with in described body one with the vertical gathering sill of cavity connects, described gathering sill slidably connects two thread bush side by side, described vertical screw flight section with two side by side thread bush coordinate; Two levels that are provided with described body rise pin, described in one end that pin inserts body of rising be inclined-plane, described thread bush is provided with the inclined-plane coordinated with the pin end face that rises.
When adopting technique scheme, drive transmission helical gear to rotate by driving mechanisms such as motors, drive driven helical gear to rotate by transmission helical gear.Because driven helical gear is connected with vertical screw rod key, and fixed by nut, so driven helical gear drives vertical screw rod to rotate in the lump.Because two thread bush that vertical screw rod is threaded are slidably connected in gathering sill, under the effect of vertical bolt rotary, thread bush can only slide up and down in gathering sill.Because thread bush and the pin that rises are contact of incline plane, therefore, under the effect of thread bush, the pin that rises can cross out from body, is clamped by the large-scale workpiece be placed on body from inside, reaches the requirement of processing.
Further, described screw rod screw rod is provided with a lining contacted with driven helical gear, and described screw rod screw rod is provided with a spacer contacted with thread bush, is provided with back-moving spring between described lining and spacer.This setting can produce precompose firmly by back-moving spring.
Further, the top of described body is provided with two alignment pins.Arrange alignment pin to be positioned large-scale workpiece by alignment pin, improve the precision of location.
Further, described alignment pin is threaded with body.This is established and after alignment pin wearing and tearing or Long-Time Service, can regulate the length of alignment pin.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of the inner centering and clamping mechanism embodiment of large-scale workpiece of the present invention.
Detailed description of the invention
As shown in Figure 1, the inner centering and clamping mechanism of large-scale workpiece of the present invention, includes vertical clamp body 1, and have a vertical cavity in clamp body, the top of cavity is a gathering sill be communicated with.In cavity, be provided with a pair intermeshing helical gear, helical gear comprises horizontal transmission helical gear 3 and vertical driven helical gear 6.Transmission helical gear 3 is fixed by lining 4 and clamp body 1, and lining 4 is fixed by screw 2.Driven helical gear 6 is connected to one end of vertical screw rod 15 by key 7, and the end of vertical screw rod 15 is provided with the nut 5 of fixing driven helical gear 6.Vertical screw rod 15 is positioned at driven helical gear 6 and clamp body 1 is provided with lining 8.Vertical screw rod 15 has also been threaded lower thread bush 13 and upper thread bush 14.Be provided with a spacer 11 in the below of lower thread bush 13, between spacer 11 and lining 8, be provided with back-moving spring 9.Wherein, lower thread bush 13 and upper thread bush 14 are equipped with inclined-plane, rise under clamp body 1 is laterally provided with pin 10 and rise pin 17, and wherein rise down pin 10 and lower thread bush 13 contact of incline plane, under the pin 10 that rises be provided with elastic force rib 12; Rise pin 17 and upper thread bush 14 contact of incline plane.Spring 16 is provided with between rise pin 17 and clamp body 1.Two alignment pins 19 are provided with at the top of clamp body.Arrange alignment pin 19 to be positioned by alignment pin 19 pairs of large-scale workpieces 20, improve the precision of location.Alignment pin 19 is threaded with clamp body 1.This is established and can wear and tear at alignment pin 19 or after Long-Time Service, regulate the length of alignment pin 19.
The present invention is red, drives transmission helical gear 3 to rotate, drive driven helical gear 6 to rotate by transmission helical gear 3 by driving mechanisms such as motors.Because driven helical gear 6 is connected with vertical screw rod 15 key, and fixed, so driven helical gear 6 drives vertical screw rod 15 to rotate in the lump by nut 5.Because two thread bush that vertical screw rod 15 is threaded are slidably connected in gathering sill, under the effect that vertical screw rod 15 rotates, thread bush can only slide up and down in gathering sill.Because thread bush and the pin that rises are contact of incline plane, therefore, under the effect of thread bush, the pin that rises can cross out from clamp body 1, is clamped by the large-scale workpiece 20 be placed on clamp body 1, reach the requirement of processing from inside.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; without departing from the inventive concept of the premise; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.

Claims (4)

1. the inner centering and clamping mechanism of large-scale workpiece, comprise vertical body, it is characterized in that, a cavity is offered in described body, a pair intermeshing helical gear is provided with in described cavity, described helical gear comprises horizontal transmission helical gear and vertical driven helical gear, and described driven helical gear is connected to one end of vertical screw rod by key, and the end of described vertical screw rod is provided with fixing driven helical gear nut; Also be provided with in described body one with the vertical gathering sill of cavity connects, described gathering sill slidably connects two thread bush side by side, described vertical screw flight section with two side by side thread bush coordinate; Two levels that are provided with described body rise pin, described in one end that pin inserts body of rising be inclined-plane, described thread bush is provided with the inclined-plane coordinated with the pin end face that rises.
2. the inner centering and clamping mechanism of large-scale workpiece according to claim 1, it is characterized in that, described vertical screw rod is provided with a lining contacted with driven helical gear, and described vertical screw rod is provided with a spacer contacted with thread bush, is provided with back-moving spring between described lining and spacer.
3. the inner centering and clamping mechanism of large-scale workpiece according to claim 1, it is characterized in that, the top of described body is provided with two alignment pins.
4. the inner centering and clamping mechanism of large-scale workpiece according to claim 3, it is characterized in that, described alignment pin is threaded with body.
CN201410755461.XA 2014-12-11 2014-12-11 Large-size workpiece interior centering clamping mechanism Pending CN104589087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410755461.XA CN104589087A (en) 2014-12-11 2014-12-11 Large-size workpiece interior centering clamping mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410755461.XA CN104589087A (en) 2014-12-11 2014-12-11 Large-size workpiece interior centering clamping mechanism

Publications (1)

Publication Number Publication Date
CN104589087A true CN104589087A (en) 2015-05-06

Family

ID=53115323

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410755461.XA Pending CN104589087A (en) 2014-12-11 2014-12-11 Large-size workpiece interior centering clamping mechanism

Country Status (1)

Country Link
CN (1) CN104589087A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907856A (en) * 2015-06-15 2015-09-16 鹰普(中国)有限公司 Double-self-centering peripheral float clamping mechanism
CN107186507A (en) * 2017-06-30 2017-09-22 上海纳铁福传动系统有限公司 Angular positioner is used in the production of three pin shaft forks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907856A (en) * 2015-06-15 2015-09-16 鹰普(中国)有限公司 Double-self-centering peripheral float clamping mechanism
CN107186507A (en) * 2017-06-30 2017-09-22 上海纳铁福传动系统有限公司 Angular positioner is used in the production of three pin shaft forks
CN107186507B (en) * 2017-06-30 2019-02-22 上海纳铁福传动系统有限公司 Three pin shaft forks produce angular positioning device

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