CN203076964U - Traction pin four-surface blank - Google Patents

Traction pin four-surface blank Download PDF

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Publication number
CN203076964U
CN203076964U CN 201220704204 CN201220704204U CN203076964U CN 203076964 U CN203076964 U CN 203076964U CN 201220704204 CN201220704204 CN 201220704204 CN 201220704204 U CN201220704204 U CN 201220704204U CN 203076964 U CN203076964 U CN 203076964U
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CN
China
Prior art keywords
workpiece
towing pin
sides
groove
plane
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Expired - Fee Related
Application number
CN 201220704204
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Chinese (zh)
Inventor
马京长
白静
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Beijing Feb7th Railway Transportation Equipment Co Ltd
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Beijing Feb7th Railway Transportation Equipment Co Ltd
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Priority to CN 201220704204 priority Critical patent/CN203076964U/en
Application granted granted Critical
Publication of CN203076964U publication Critical patent/CN203076964U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a traction pin four-surface blank. The traction pin four-surface blank comprises a blank body, a guide key, a pressing block and a supporting block, wherein the blank is provided with a concave groove which is used for containing a workpiece, the guide key is fixed under the blank body, a guide component is used for being installed on a miller, the pressing block is detachably fixed on the blank body and used for pressing the workpiece, the supporting block is provided with an inclined surface, the inclination angle of the inclined surface is matched with an inclined surface angle of a traction pin. According to the technical scheme, the traction pin four-surface blank is provided with a blank body, a pressing block and a supporting block, a workpiece can be positioned from the middle of the workpiece, two ends of the workpiece can be machined through one time of positioning, and machining efficiency of the workpiece is improved.

Description

Towing pin four sides fraise jig
Technical field
The utility model relates to mechanical technique, relates in particular to a kind of towing pin four sides fraise jig.
Background technology
Towing pin is to use in the locomotive, is used to connect locomotive car body and draw bar, is the main accessory of locomotive transmitting tractive power or brake force.Before using, the two ends of workpiece need be processed into the shape that needs, to meet the demands.Towing pin after the processing has two planes that are parallel to each other, A face and B face, and the inclined-plane of two symmetries, C face and D face.
In the prior art, use the dividing head processing work.Be useful on the three-jaw chuck that holds workpiece on the dividing head, the cylindrical of three-jaw chuck clamping work pieces is with the location.Specific process is as follows: the A face that draws on workpiece, B face, C face and D face processing line.Rotate the dividing head handle, make milling cutter aim at A face processing line, mobile milling machine table is finished the processing of A face.Next, rotate the dividing head handle,, use the same method and finish the processing of B face dividing head chuck Rotate 180 °.During processing inclined-plane C, with 5 ° of 42 ' 38 of dividing head rotation ", the processing line of inclined-plane C is in a horizontal position, milling cutter is aimed at C face processing line, mobile milling machine table is finished the processing of C face.Repeat same action, can finish the processing of D face.Behind two planes that process towing pin one end and two inclined-planes, unclamp three-jaw chuck, take out workpiece and turn over turnback along axis, tight with the cylindrical locating clip again.Repeat above identical operation, finish four face processing of the workpiece other end.
There is following problem at least in prior art: need first setting-out before the processing, the setting-out precision is not high and waste time and energy.Dividing head at every turn can only workpiece of clamping, and four faces processing an end need be to No. four cuttves.Need overturn and turn around once in the processing two ends, twice, eight tool setting of clamping, and working (machining) efficiency is low.
The utility model content
The utility model provides a kind of towing pin four sides fraise jig, is used to improve working (machining) efficiency.
The utility model provides a kind of towing pin four sides fraise jig, wherein, comprising:
Carcass has groove, and described groove is used for ccontaining workpiece;
Feather key is fixedly installed on described carcass below, and described feather key is used to be installed in milling machine;
Briquetting, the detachable described carcass top that is fixed on is used to compress described workpiece;
Back-up block has the inclined-plane, the angle of inclination on described inclined-plane and the coupling of the bevel angle on the towing pin.
Aforesaid towing pin four sides fraise jig preferably, also comprises:
Feeler block is fixed on the described carcass.
Aforesaid towing pin four sides fraise jig, preferably,
The quantity of described groove is two, and each described groove is used for ccontaining two described workpiece.
Aforesaid towing pin four sides fraise jig, preferably,
Described briquetting is detachable to be fixed in the middle part of the described groove, is used for compressing simultaneously two described workpiece of place groove.
Aforesaid towing pin four sides fraise jig preferably, also comprises:
Screw rod is fixed on described groove middle part;
Spring is set on the described screw rod;
Nut is screwed on the described screw rod;
Wherein, described briquetting is set on the described screw rod, and between described spring and described nut, described nut cooperates with described spring, is used for fixing described briquetting.
Aforesaid towing pin four sides fraise jig, preferably,
Described briquetting has first seal face and second seal face, and described first seal face and horizontal direction angle are 50 degree, and described second seal face and horizontal direction angle are 70 degree.
Aforesaid towing pin four sides fraise jig preferably, also comprises:
Parallels has horizontal plane, is arranged in the described groove, is used to locate described workpiece, and/or;
Gripper shoe has horizontal plane, is arranged in the described groove, is used to locate described workpiece;
Wherein, the thickness of described parallels is higher than the thickness of described gripper shoe.
Aforesaid towing pin four sides fraise jig, preferably,
The angle of inclination on described back-up block inclined-plane is 1:10.
Aforesaid towing pin four sides fraise jig, preferably,
The quantity of described back-up block is four, and per two is on one group of inwall that is symmetricly set on described groove.
The towing pin four sides fraise jig that technique scheme provides has carcass, briquetting and back-up block, can be from location, the middle part workpiece of workpiece, and one-time positioning is the two ends of energy processing work just, have improved the working (machining) efficiency of workpiece.
Description of drawings
Fig. 1 a is the structural representation of towing pin;
Fig. 1 b is the left view of Fig. 1 a;
The towing pin four sides fraise jig structural representation that Fig. 2 provides for the utility model embodiment;
Fig. 3 is Fig. 2 vertical view;
Fig. 4 is the left view of Fig. 2.
The specific embodiment
Fig. 1 a is the structural representation of towing pin, and Fig. 1 b is the left view of Fig. 1 a.
Referring to Fig. 1 a and Fig. 1 b, towing pin 9 overall structures are probably cylindrical, and wherein two end mills are the multiaspect shape.Particularly, after having milled, each end all has two parallel plane A face and B faces, and the inclined-plane C face and the D face of two symmetries.The tilt angle theta of C face and D face is 1:10.
The towing pin four sides fraise jig structural representation that Fig. 2 provides for the utility model embodiment, Fig. 3 is Fig. 2 vertical view, Fig. 4 is the left view of Fig. 2.
The utility model embodiment provides a kind of towing pin four sides fraise jig, wherein, comprises carcass 1, feather key 2, briquetting 3 and back-up block 4.Carcass 1 has groove 11, and described groove 11 is used for ccontaining workpiece 10; Feather key 2 is fixedly installed on described carcass 1 below, and described feather key is used to be installed in milling machine; Feeler block 5 is fixed on the described carcass 1, is used for tool setting; Briquetting 3 detachable described carcass 1 tops that are fixed on are used to compress described workpiece 10; Back-up block 4 has the inclined-plane, the bevel angle coupling on the angle of inclination on described inclined-plane and the towing pin 9.
During installation, earlier towing pin four sides fraise jig being installed on the vertical knee-type milling machine workbench, specifically is that feather key is installed in the T type groove of vertical knee-type milling machine workbench; Fix with T type bolt, nut, clamp; Then workpiece is fixed in the groove.Processing sequence is: respectively the A face at processing work two ends → with workpiece is along self axis direction Rotate 180 degree, the B face at difference processing work two ends → fitted in the inclined-plane of A face or B face and back-up block, finish the workpiece location, then respectively the C face at processing work two ends → with workpiece along self axis direction Rotate 180 degree, fitted in the inclined-plane of A face or B face and back-up block, finish the workpiece location, distinguish the D face at processing work two ends then.Herein, workpiece is meant blank to be added, and obtains towing pin after the workpiece processing.
, need to prove herein: in the present embodiment, when processing A face, after workpiece locking, directly processing.When processing B face, adopt the parallels supporting workpiece.When processing A face and B face, back-up block does not play positioning action, is and the briquetting cooperation, to realize the locking of workpiece.When processing C face and D face, back-up block plays positioning action on the one hand, cooperates with briquetting on the other hand, to realize the locking of workpiece.Because have the inclined-plane on the back-up block, and the angle of inclination on this inclined-plane and the coupling of the bevel angle on the towing pin, so adopt this location, inclined-plane workpiece, can obtain satisfactory towing pin after the processing.The introduction of parallels and back-up block sees for details hereinafter.
Carcass is the rigid backbone that workpiece and other parts are installed, and it not only will be subjected to the tilting moment that caused by cutting force, also is subjected to the pressure effect of briquetting clamping force.Therefore, carcass not only will have good intensity, rigidity, and very strong non-deformability and higher processing precision requirement also will be arranged.Herein, the preferred material of carcass is the HT200 foundry goods, does not allow pore, sand holes and loose.The HT200 foundry goods also needs to prevent distortion through Ageing Treatment.
The back-up block material is preferably the 20# steel, and the inclined-plane on the back-up block needs through Carburization Treatment.Adopt the Technology for Heating Processing of carburizing, quenching, purpose is to improve the hardness and the wearability of back-up block ramp.Back-up block is the strength member of towing pin four sides fraise jig.Inclined-plane, towing pin two ends adds all uses this location, back-up block inclined-plane man-hour, meets the principle of locating unifying datum, guarantees that processing back, inclined-plane, towing pin two ends is in full accord.Back-up block is set, can improves crudy greatly, test shows, uses the towing pin of this tire processing not appear a waste product, survival rate 100%.
The material of briquetting is preferably the 45# steel; Briquetting is exerted pressure in the middle of adopting, and once can clamp two workpiece, and two groups of different inclined planes are adopted at the position of exerting pressure on the briquetting, i.e. first seal face and second seal face.Wherein, workpiece pressing when first seal face is used for milling flat owing to use the cylindrical location, can make workpiece stressed more evenly rationally like this, and it is more reliable that workpiece is clamped.Workpiece pressing when second seal face is used to process the towing pin inclined-plane.Owing to use the location, inclined-plane, at this moment the application point of briquetting thrust points to the back-up block inclined-plane to the back-up block displacement of inclined plane, and seal face and inclined-plane are close to more, thereby makes that to compress the location more reliable.
The towing pin four sides fraise jig that technique scheme provides has carcass, briquetting and back-up block, can be from location, the middle part workpiece of workpiece, and one-time positioning is the two ends of energy processing work just, have improved the working (machining) efficiency of workpiece.
Further, towing pin four sides fraise jig also comprises feeler block 5, is fixed on the described carcass 1, is used for auxiliary tool setting.
The feeler block material is preferably the 20# steel, and the feeler block surface needs through Carburization Treatment.Adopt the Technology for Heating Processing of carburizing, quenching, purpose is to improve the hardness and the wearability on feeler block surface.Because two planes and two inclined-planes at towing pin two ends are symmetric arrangement, feeler block is set after, four planes at processing towing pin two ends only need a tool setting, have avoided setting-out in the prior art and have needed the processing method of eight tool settings, not only alleviate working strength of workers.And make that the structure of mold is compact more, make the process that seems complicated become simple and convenient.Have only when wearing and tearing appear in cutter, just need tool setting again, be particularly suitable for producing in enormous quantities.
For improving working (machining) efficiency, to calculate as can be known according to the size of towing pin 9 and the size of vertical knee-type milling machine workbench, the quantity of carcass 1 the above groove 11 is two, each described groove 11 is used for ccontaining two described workpiece 10.Among Fig. 2, promptly illustrated above-mentioned situation, four stations are labeled as I, II, III and IV respectively, have illustrated the situation of processing A face, B face, C face and D face respectively.
After adopting above-mentioned the setting, a tool setting can be processed four workpiece, has improved working (machining) efficiency greatly.
Carcass 1 is provided with two grooves 11, altogether can ccontaining four workpiece 10, and be to guarantee workpiece 10 reliability of fixation, alternatively, the quantity of described back-up block 4 is four, per two is on one group of inwall that is symmetricly set on described groove 11.
In order to reduce number of components and parts in the fraise jig of towing pin four sides, and improve the service efficiency of briquetting 3, preferably, described briquetting 3 detachable described groove 11 middle parts that are fixed on are used for compressing simultaneously two described workpiece 10 of place groove 11.
Briquetting 3 can be by detachable groove 11 middle parts that are fixed on of following implementation:
Towing pin four sides fraise jig also comprises screw rod 6, spring 7 and nut 8.Screw rod 6 is fixed on described groove 11 middle parts; Spring 7 is set on the described screw rod 6; Nut 8 is screwed on the described screw rod 6; Wherein, described briquetting 3 is set on the described screw rod 6, and between described spring 7 and described nut 8, described nut 8 cooperates with described spring 7, is used for fixing described briquetting 3.
Herein, be example to process the towing pin 9 shown in Fig. 1 a, particularly, described briquetting has first seal face 31 and second seal face 32, and described first seal face 31 is 50 degree with the horizontal direction angle, and described second seal face 32 is 70 degree with the horizontal direction angle.
When needing to change the seal face of briquetting, unclamp nut, briquetting will be upspring.After upspringing, briquetting is rotated to the angle that needs, locking nut has promptly been realized the installation of briquetting again.As seen, installation is very convenient.
Further, towing pin four sides fraise jig also comprises parallels 33 and/or gripper shoe 34.Parallels 33 has horizontal plane, is arranged in the described groove 11, is used to locate described workpiece 10.Gripper shoe 34 has horizontal plane, is arranged in the described groove 11, is used to locate described workpiece 10; Wherein, the thickness of described parallels 33 is higher than the thickness of described gripper shoe 34.
Parallels and gripper shoe all are to be used for supporting workpiece, and difference is, when the not processed as yet plane of workpiece, use gripper shoe to support.During the processed plane of workpiece, use another plane of processing, parallels location.Gripper shoe is screwed on carcass, and parallels is movable, is arranged on when needing on the carcass, places outside the carcass when not required, so that change.
Provide a processing instance below, to further describe such scheme.With used towing pin on the multiple model locomotives such as production east wind 7 series is example:
Towing pin four sides fraise jig is placed on the vertical knee-type milling machine workbench, and the T type keyway that feather key is put on the workbench gets final product automatic capturing, only needs can use with after tommyhead bolt, the fastening clamping of nut, and mold is installed simple.
Four workpiece are successively placed on the carcass of towing pin four sides fraise jig,, see Fig. 2: I station, II station with the degree of 50 on briquetting inclined-plane alignment pieces.Rotating nut briquetting clamping work pieces.
In face of the processing A,, see Fig. 2 with the feeler block tool setting that towing pin four sides fraise jig carries.Tool setting is very simple, only needs cutting edge under the milling cutter is contacted with the feeler block upper surface, and locking gets final product.Milling cutter starts milling machine to after good, and movable workbench is finished end A face processing, vertically moves workbench, can finish the processing of other end A face.
When processing the B face, only need put parallels, make A face and parallels closely connected, can locate clamping fast, save the centering time of workpiece with workpiece along self axis direction Rotate 180 degree, and can quick, accurate location.Start milling machine, movable workbench is finished end B face processing, vertically moves workbench, can finish the processing of other end B face.
After processing A, B plane, in the time of processing the C inclined-plane, at first unclamp the nut on the briquetting, workpiece is rotated along axis, contact with the inclined-plane of the A face after the processing with towing pin four sides fraise jig upper support piece, promptly, see Fig. 2: the I position with A face location.After unclamping nut, briquetting is by spring jack-up, briquetting revolved along self axis to turn 90 degrees then, with 70 degree inclined-plane alignment pieces cylindricals of briquetting, sees III among Fig. 1, IV position.At this moment, the application point of briquetting thrust is close to its locating surface to the locating piece displacement of inclined plane more.Clamping work pieces repeats above-mentioned action, finishes end C inclined-plane processing, vertically moves workbench, can finish the processing of other end C inclined-plane.Two pairs of clamping areas of briquetting are designed to the inclined-plane of different angles, and purpose is the application point that changes thrust, make that to compress the location more reliable.
In face of the processing D, unclamp briquetting, workpiece is taken out along self axis turn over turnback, contact with mold inclined-plane back-up block with the A face equally, repeat same action, can finish the processing of two ends D face.Since when processing C, D inclined-plane, all the time with A face location, the location unifying datum.Therefore the machining accuracy on C, D inclined-plane is in full accord, and dimensional accuracy meets design requirement fully, waste product can not occur.
The towing pin four sides fraise jig that technique scheme provides has following beneficial effect:
Save man-hour.Owing to do not need setting-out, cancellation setting-out operation has been saved setting-out workman and man-hours requirement.Shortened the manufacturing cycle of towing pin.
The efficient height, labor strength is low.Use above-mentioned towing pin four sides fraise jig processing towing pin, once can clamp four workpiece, raise the efficiency greatly, owing to finish the processing of all machined surfaces, only need a tool setting to produce in batches again, after tool wear, just need tool setting once more.Be fit to produce in enormous quantities.
The machining accuracy height.Because four workpiece are processed simultaneously, every one cutter milling survives, and the location unifying datum, so accurate to dimension is very high, and as not considering the trueness error of lathe itself, the coplane degree error of two ends machined surface is almost nil.Meet design requirement fully.
The yield rate height.Use the four sides fraise jig of above-mentioned towing pin to avoid the influence of human factor,, and almost do not appear waste product after using as long as can use the milling machine can be on duty to crudy.
Reduce expenses, reduce cost.Above-mentioned towing pin four sides fraise jig is simple in structure, and low cost of manufacture is not easy to wear, long service life.Simple to operate, low to workman's technical merit requirement, do not need special training, and do not need to acquire other auxiliary equipment, instrument etc.Therefore can save a large amount of original equipment costs, workman's post training takes, and the manufacturing expense of mold.
It should be noted that at last: above each embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.

Claims (9)

1. a towing pin four sides fraise jig is characterized in that, comprising:
Carcass has groove, and described groove is used for ccontaining workpiece;
Feather key is fixedly installed on described carcass below, and described feather key is used to be installed in milling machine;
Briquetting, the detachable described carcass top that is fixed on is used to compress described workpiece;
Back-up block has the inclined-plane, the angle of inclination on described inclined-plane and the coupling of the bevel angle on the towing pin.
2. towing pin four sides fraise jig according to claim 1 is characterized in that, also comprises:
Feeler block is fixed on the described carcass.
3. towing pin four sides fraise jig according to claim 1 is characterized in that,
The quantity of described groove is two, and each described groove is used for ccontaining two described workpiece.
4. towing pin four sides fraise jig according to claim 3 is characterized in that,
Described briquetting is detachable to be fixed in the middle part of the described groove, is used for compressing simultaneously two described workpiece of place groove.
5. towing pin four sides fraise jig according to claim 4 is characterized in that, also comprises:
Screw rod is fixed on described groove middle part;
Spring is set on the described screw rod;
Nut is screwed on the described screw rod;
Wherein, described briquetting is set on the described screw rod, and between described spring and described nut, described nut cooperates with described spring, is used for fixing described briquetting.
6. towing pin four sides fraise jig according to claim 1 is characterized in that,
Described briquetting has first seal face and second seal face, and described first seal face and horizontal direction angle are 50 degree, and described second seal face and horizontal direction angle are 70 degree.
7. towing pin four sides fraise jig according to claim 1 is characterized in that, also comprises:
Parallels has horizontal plane, is arranged in the described groove, is used to locate described workpiece, and/or
Gripper shoe has horizontal plane, is arranged in the described groove, is used to locate described workpiece;
Wherein, the thickness of described parallels is higher than the thickness of described gripper shoe.
8. towing pin four sides fraise jig according to claim 1 is characterized in that,
The angle of inclination on described back-up block inclined-plane is 1:10.
9. towing pin four sides fraise jig according to claim 3 is characterized in that,
The quantity of described back-up block is four, and per two is on one group of inwall that is symmetricly set on described groove.
CN 201220704204 2012-12-18 2012-12-18 Traction pin four-surface blank Expired - Fee Related CN203076964U (en)

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Application Number Priority Date Filing Date Title
CN 201220704204 CN203076964U (en) 2012-12-18 2012-12-18 Traction pin four-surface blank

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103042415A (en) * 2012-12-18 2013-04-17 北京二七轨道交通装备有限责任公司 Four-surface milling tire of towing pin
CN106001717A (en) * 2016-06-28 2016-10-12 梧州奥卡光学仪器有限公司 Machining method for rotating shaft bearing bases

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103042415A (en) * 2012-12-18 2013-04-17 北京二七轨道交通装备有限责任公司 Four-surface milling tire of towing pin
CN103042415B (en) * 2012-12-18 2015-08-26 北京二七轨道交通装备有限责任公司 Towing pin four sides fraise jig
CN106001717A (en) * 2016-06-28 2016-10-12 梧州奥卡光学仪器有限公司 Machining method for rotating shaft bearing bases

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Granted publication date: 20130724

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