CN203509072U - Ejector pin - Google Patents
Ejector pin Download PDFInfo
- Publication number
- CN203509072U CN203509072U CN201320565151.2U CN201320565151U CN203509072U CN 203509072 U CN203509072 U CN 203509072U CN 201320565151 U CN201320565151 U CN 201320565151U CN 203509072 U CN203509072 U CN 203509072U
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- workpiece
- thimble
- chuck
- putting
- support portion
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Abstract
The utility model provides an ejector pin, and belongs to the technical field of machinery. The ejector pin comprises a connecting portion in a rod shape. One end of the connecting portion is used for being connected with a machine tool tail frame, and the other end of the connecting portion is provided with a conical supporting portion which is coaxially arranged together with the connecting portion. The outer side of the supporting portion is provided with a strip-shaped material placing portion which protrudes in the direction of the axis of the supporting portion. When a workpiece is machined through the ejector pin, machining efficiency and machining accuracy can be improved.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of thimble.
Background technology
Turning center is the automation equipment of carrying out revolving parts multiple operation turning processing, and the automation of multiple operation turning processing has greatly improved production efficiency.Yet the low rigidity in overlength accessory turning process is the key factor that affects turning machining accuracy and lathe stability.The conventional method that improves long axis part processing rigidity is to adopt ejector pin mechanism, and the form of the two fulcrums of utilization reduces the circular runout amplitude of revolution process.
For example, Chinese utility model patent (application number 201220245951.1, Granted publication CN202701407U) tailstock centre is disclosed, comprise top body, this body is arranged on tailstock, and the end of body is provided with thimble, on top body, and away from one end of thimble, be connected with a cylinder; Cylinder is fixed on tailstock, and the cylinder arm of cylinder fixes by drive link and top body.
In this is top, while adopting top taper surface to carry out supplemental support, generally need workpiece turning center hole in advance, and the turning process of centre bore itself also needs to avoid the low flexible problem of elongated workpieces.Therefore, conventionally first long axis part clamping overhang is reduced, to guarantee rigidity, then end face and endoporus are carried out to turning; After completing, unclamp fixture, workpiece overhang is increased, reach the length of cut needing; After clamping, with the thimble conical surface, in endoporus, support, then carry out the turning processing of outside revolution feature.
Twice clamping that has different overhangs in this process, twice clamping process needs manual operation; On the other hand, carry out in thick smart multi-working procedure processing course in following process, also may after roughing, cut off also clamping again, carry out finish turning processing, this process also relates to the manual operation problem of clamping process.Manual operation has reduced production efficiency, has increased artificial disturbance and the uncertainty of process.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of thimble that can realize automated production.
The purpose of this utility model can realize by following technical proposal: a kind of thimble, comprise the connecting portion that is shaft-like, one end of described connecting portion is for being connected with tail stock for machine tool, it is characterized in that, the other end of described connecting portion has tapered support portion and described support portion and described connecting portion and coaxially arranges, and the outside of described support portion has the material portion of putting of protruding and be strip along the axis direction of support portion.
The rod-shaped workpiece that has an endoporus when port need to stretch out a part while continuing turner outer surface from chuck, owing to thering is the material portion of putting that is strip in this thimble, only need be by the endoporus that material portion stretches into workpiece of putting of thimble, then unclamp chuck, now, put material portion and workpiece is had to the effect of a support.Mobile thimble, drives workpiece movable to desired location, and chuck clamps, and makes brace abuts in the end of workpiece, just can continue processing to workpiece.In this process, due to the action that does not have artificial feeding, puts material, avoided the uncertainty of processing in process of production because of the product that human factor produces, thereby can improve automaticity and the stability of workpiece processing.Putting the meaning that material portion protrudes along the axis direction of support portion is, as required, can make to put material portion and support portion coaxially arranges, and also can make to put the axial location that material portion departs from support portion, also can make to put the axis direction that material portion departs from support portion a little.
In above-mentioned thimble, the material portion of putting that the described material portion of putting is cylindrical and described and described connecting portion coaxially arrange.It is cylindrical putting material portion, and it is processed more for convenience; To put material portion and connecting portion and coaxially arrange, comparatively stable while making the operation of this thimble.
In above-mentioned thimble, between the end of the described material portion of putting and described support portion, by screw thread, be connected mutually.This is to put a kind of mode that material portion is connected with support portion.Put connected mode between material portion and support portion for being threaded, more for convenience, it is linked and packed also more for convenience in the two processing separately.
In above-mentioned thimble, the described material portion of putting and described support portion are integrated manufacture.This is to put the another kind of mode that material portion is connected with support portion.To put material portion and support portion integrally manufactured, its structure is comparatively stable.
In above-mentioned thimble, described putting in material portion has tapered guide surface on the one end away from support portion.Spigot surface is set putting in material portion, is convenient to make to put material portion and stretches into inner hole of workpiece.
The method for turning of strip-shaped work, the method comprises the following steps:
A, material loading: one end of rod-shaped workpiece is clamped in to the chuck place of lathe, the other end of workpiece stretches out in chuck;
B, turning inner hole: by common method for turning, to being clamped in the workpiece turning inner hole at chuck place;
C, thimble feeding: chuck stops operating, drive the tailstock of lathe to make the material portion of putting of thimble enter into the endoporus place of workpiece near chuck by driving mechanism, chuck unclamps, and workpiece drops to putting in material portion of thimble, by putting material portion, workpiece is supported;
D, feeding: by driving mechanism, drive the tailstock of lathe to make workpiece arrive mobile needed Working position away from chuck, by gripper chuck clamping of workpieces;
E, turning outer surface: chuck rotates, and by common method for turning, the outer surface of workpiece is carried out to turning processing;
F, blanking: withdrawing, chuck stops operating, and claw unclamps, and workpiece is taken off.
Chuck clamp with loosen, the whole clamping adjusting operation process such as tailstock axial location all needs automation equipment to coordinate, by digital control system, unifies control, realizes the automated production of workpiece.
During material loading, the needs according to workpiece processing, arrange the suitable overhang of workpiece, are convenient to the endoporus of turner part.On workpiece, turning inner hole is in order to place the material portion of putting.In the process of feeding, utilize and put the frictional force between material portion and inner hole of workpiece, drive workpiece movable to desired location.In step D, after chuck clamps, thimble can exit inner hole of workpiece, leaves machining area, and workpiece continues processing; After chuck clamps, thimble also can be along its axis direction near workpiece, and leans on the endoporus of workpiece with the taper surface of support portion, and now, chuck is located workpiece together with thimble.If adding man-hour, thimble has support to workpiece, so, in step F, before workpiece takes out, the thimble region of need to deactivating.
In the method for turning of above-mentioned strip-shaped work, in step D, by thimble, the other end of workpiece is positioned: by driving mechanism, drive tailstock near chuck and make the taper surface of the support portion of thimble lean the endoporus edge at workpiece.Now, workpiece is placed between chuck and thimble, and workpiece is positioned, and is convenient to processing.
In the method for turning of above-mentioned strip-shaped work, in step C, D, described driving mechanism adopts motor by the cooperation of rack-and-pinion.Concrete form is: the gear that is connected on machine shaft, and the tooth bar that is connected on tail stock for machine tool, motor drives the tailstock of lathe to move by rack-and-pinion, thereby drives thimble to move.Except this form, driving mechanism can also make the form of screw mandrel screw or the mechanism that other tailstock that can realize lathe moves.
In the method for turning of above-mentioned strip-shaped work, the claw of described chuck is by cylinder or Driven by Hydraulic Cylinder.That is to say, chuck is air spider or oild chuck.
Compared with prior art, in the method for turning of this thimble and strip-shaped work, owing to being provided with the material portion of putting, in the process of workpiece processing, put material portion and can stretch into inner hole of workpiece, drive the certain distance of workpiece movable, therefore, make the atomization degree of workpiece higher, can automatically realize the overhang of workpiece; In addition, because this process can be controlled by digital control system is unified, make the accuracy of workpiece processing also higher.
Accompanying drawing explanation
Fig. 1 is the structural representation after this thimble is arranged on lathe;
Fig. 2 is the structural representation of this thimble.
In figure, 1, main shaft; 2, chuck; 3, workpiece; 4, thimble; 4a, connecting portion; 4b, support portion; 4c, put material portion; 4d, spigot surface; 5, tailstock; 6, guide rail; 7, installing rack.
The specific embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, a kind of thimble 4, comprises cylindrical shaft-like connecting portion 4a, and one end of connecting portion 4a is for being connected with tail stock for machine tool 5, and the other end of connecting portion 4a has support portion 4b, and support portion 4b and connecting portion 4a coaxially arrange.Support portion 4b and connecting portion 4a are integral type structure.As another kind of scheme, support portion is threaded on connecting portion.
On the 4b of support portion, have taper surface, the outer end of support portion 4b is fixed with the 4c of the material portion of putting that cylindrical strip protrudes.Put the 4c of material portion and connecting portion 4a coaxially arranges.Put on the upper one end away from support portion 4b of the 4c of material portion and there is tapered guide surface 4d, be convenient to thimble 4 and stretch into workpiece 3 endoporus.
The rod-shaped workpiece 3 that has an endoporus when port need to stretch out a part while continuing turner 3 outer surface from chuck 2, owing to thering is the 4c of the material portion of putting that is strip in this thimble 4, only the 4c of the material portion of putting of thimble 4 need be stretched into the endoporus of workpiece 3, then unclamp chuck 2, now, put the 4c of material portion and workpiece 3 is had to the effect of a support.Mobile thimble 4, drives workpiece 3 to move to desired location, and chuck 2 clamps, and makes support portion 4b be resisted against the end of workpiece 3, just can continue processing to workpiece 3.In this process, due to the action that does not have artificial feeding, puts material, avoided the uncertainty of processing in process of production because of the workpiece that human factor produces, thereby can improve automaticity and the stability of workpiece 3 processing.Putting the meaning that the 4c of material portion protrudes along the axis direction of support portion 4b is, as required, can make to put the 4c of material portion and support portion 4b coaxially arranges, also can make to put the axial location that the 4c of material portion departs from support portion 4b, also can make to put the axis direction that the 4c of material portion departs from support portion 4b a little.
The concrete mounting means of thimble 4 on lathe is: as shown in Figure 1, main shaft 1 is installed on installing rack 7, chuck 2 is housed in main shaft 1, chuck 2 is for place work piece 3, and the clamping of chuck 2 is realized automatically and being controlled with unclamping by system.The claw of chuck 2 is by cylinder or Driven by Hydraulic Cylinder.That is to say, chuck 2 is air spider 2 or oild chuck 2.Main shaft 1 is arranged to middle communicating structure, is convenient to long axis rotary work piece 3 and by any degree of depth, installs in through hole.Thimble 4 is arranged on tail stock for machine tool 5, between thimble 4 and tailstock 5, is provided with bearing, makes thimble running smooth and easy.Tail stock for machine tool 5 is being arranged on guide rail 6.Driving mechanism drives tailstock 5 to move on guide rail 6, thereby drives thimble 4 to move.
The method for turning of strip-shaped work 3, the method comprises the following steps:
A, material loading: one end of rod-shaped workpiece 3 is clamped in to chuck 2 places of lathe, the other end of workpiece 3 stretches out in chuck 2;
B, turning inner hole: by common method for turning, to being clamped in workpiece 3 turning inner holes at chuck 2 places;
C, thimble 4 feedings: chuck 2 stops operating, by driving mechanism, drive the tailstock 5 of lathe to make the 4c of the material portion of putting of thimble 4 enter into the endoporus place of workpiece 3 near chuck 2, chuck 2 unclamps, and workpiece 3 drops on the 4c of the material portion of putting of thimble 4, by putting the 4c of material portion, workpiece 3 is supported;
D, feeding: by driving mechanism, drive the tailstock 5 of lathe to make workpiece 3 to mobile needed Working position away from chuck 2, by chuck 2 clamping work pieces 3, and position by the other end of 4 pairs of workpiece 3 of thimble: by driving mechanism, drive tailstock 5 near chuck 2 and make the taper surface of the support portion 4b of thimble 3 lean the endoporus edge at workpiece 3;
E, turning outer surface: chuck 2 rotates, and by common method for turning, the outer surface of workpiece 3 is carried out to turning processing;
F, blanking: withdrawing, chuck 2 stops operating, and claw unclamps, and workpiece 3 is taken off.
Chuck 2 clamp with loosen, the whole clamping adjusting operation process such as tailstock 5 axial location all needs automation equipment to coordinate, by digital control system, unifies control, realizes the automated production of workpiece 3.
During material loading, the needs according to workpiece 3 processing, arrange the suitable overhang of workpiece 3, are convenient to the endoporus of turner part 3.On workpiece 3, turning inner hole is to put the 4c of material portion in order to place.In the process of feeding, utilize and put the frictional force between the 4c of material portion and workpiece 3 endoporus, drive workpiece 3 to move to desired location.In step D, after chuck 2 clamps, thimble 4 can exit workpiece 3 endoporus, leaves machining area, and workpiece 3 continues processing; After chuck 2 clamps, thimble 4 also can be along its axis direction near workpiece 3, and leans on the endoporus of workpiece 3 with the taper surface of support portion 4b, and now, chuck 2 is located workpiece 3 together with thimble 4.If adding man-hour, 4 pairs of workpiece 3 of thimble have support, so, in step F, before workpiece 3 takes out, thimble 4 region of need to deactivating.
In step C, D, driving mechanism adopts motor by the cooperation of rack-and-pinion.Concrete form is: the gear that is connected on machine shaft, and the tooth bar that is connected on tail stock for machine tool 5, motor drives the tailstock 5 of lathe to move by rack-and-pinion, thereby drives thimble 4 to move.Except this form, driving mechanism can also make the form of screw mandrel screw or the mechanism that other tailstock 5 that can realize lathe moves.
The claw of chuck 2 is by cylinder or Driven by Hydraulic Cylinder.That is to say, chuck 2 is air spider 2 or oild chuck 2.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used main shaft 1, chuck 2, workpiece 3, thimble 4, connecting portion 4a, support portion 4b herein, put the terms such as the 4c of material portion, spigot surface 4d, tailstock 5, guide rail 6, installing rack 7, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. a thimble, comprise the connecting portion (4a) that is shaft-like, one end of described connecting portion (4a) is for being connected with tail stock for machine tool (5), it is characterized in that, the other end of described connecting portion (4a) has tapered support portion (4b) and described support portion (4b) coaxially arranges with described connecting portion (4a), and the outside of described support portion (4b) has the axis direction protrusion of along support portion (4b) and is the material portion of putting (4c) of strip.
2. thimble according to claim 1, is characterized in that, the cylindrical and described material portion of putting (4c) of the described material portion of putting (4c) coaxially arranges with described connecting portion (4a).
3. thimble according to claim 1 and 2, is characterized in that, between the end of the described material portion of putting (4c) and described support portion (4b), by screw thread, is connected mutually.
4. thimble according to claim 1 and 2, is characterized in that, the described material portion of putting (4c) is integrated manufacture with described support portion (4b).
5. thimble according to claim 1 and 2, is characterized in that, the described material portion of putting (4c) has tapered guide surface (4d) on upper one end away from support portion (4b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565151.2U CN203509072U (en) | 2013-09-11 | 2013-09-11 | Ejector pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565151.2U CN203509072U (en) | 2013-09-11 | 2013-09-11 | Ejector pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203509072U true CN203509072U (en) | 2014-04-02 |
Family
ID=50368054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320565151.2U Expired - Lifetime CN203509072U (en) | 2013-09-11 | 2013-09-11 | Ejector pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203509072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418809A (en) * | 2013-09-11 | 2013-12-04 | 浙江海德曼机床制造有限公司 | Thimble and turning method for strip-shaped workpiece |
| CN104029231A (en) * | 2014-04-29 | 2014-09-10 | 宁国市日格美橡塑制品有限公司 | Flexible tube machining device |
| CN104607670A (en) * | 2015-01-21 | 2015-05-13 | 胡和萍 | Ejector device for center lathe |
-
2013
- 2013-09-11 CN CN201320565151.2U patent/CN203509072U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418809A (en) * | 2013-09-11 | 2013-12-04 | 浙江海德曼机床制造有限公司 | Thimble and turning method for strip-shaped workpiece |
| CN103418809B (en) * | 2013-09-11 | 2016-01-20 | 浙江海德曼机床制造有限公司 | The method for turning of a kind of thimble and strip-shaped work |
| CN104029231A (en) * | 2014-04-29 | 2014-09-10 | 宁国市日格美橡塑制品有限公司 | Flexible tube machining device |
| CN104029231B (en) * | 2014-04-29 | 2015-11-04 | 宁国市日格美橡塑制品有限公司 | A kind of flexible pipe process equipment |
| CN104607670A (en) * | 2015-01-21 | 2015-05-13 | 胡和萍 | Ejector device for center lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Beishan head Patentee after: ZHEJIANG HEADMAN INTELLIGENT EQUIPMENT CO.,LTD. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Beishan head Patentee before: ZHEJIANG HEADMAN MACHINERY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |