CN204339316U - Drawing pull bar end machining fixture - Google Patents
Drawing pull bar end machining fixture Download PDFInfo
- Publication number
- CN204339316U CN204339316U CN201420772142.5U CN201420772142U CN204339316U CN 204339316 U CN204339316 U CN 204339316U CN 201420772142 U CN201420772142 U CN 201420772142U CN 204339316 U CN204339316 U CN 204339316U
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- screwed hole
- fixed head
- positioning disk
- mount pad
- screwed
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Abstract
The utility model discloses a kind of drawing pull bar end machining fixture, comprise mount pad, fixed head, positioning disk and fastener, fixed head is vertically fixed on described mount pad, positioning disk is fixedly installed on above described fixed head, positioning disk offers the second screwed hole, fastener comprises the first fastening assembly and the second fastening assembly; First fastening assembly comprises hold-down nut, studs, gland and pad, gland offers on the 3rd screwed hole, pad and offer the 4th screwed hole, studs is tightened after being screwed into hold-down nut, the 3rd screwed hole, the 4th screwed hole and the second screwed hole successively and is fixed in positioning disk; Second fastening assembly comprises locating dowel, puller bolt, locating dowel offers the 5th screwed hole, and puller bolt is screwed in the 5th screwed hole; Two locating dowels are symmetricly set in the both sides of fixed head.By the utility model, the clamping of workpiece is more rapidly and efficiently facilitated, improve the centering precision of workpiece simultaneously, improve production efficiency.
Description
Technical field
The utility model belongs to motor-car technical field, and matrix relates to a kind of fixture of EMUs motor car bogie drawing pull bar end machining.
Background technology
The essential parts that motor car bogie drawing pull bar termination is run as motor-car, play a very important role, but the processing and manufacturing difficulty of termination is larger, working (machining) efficiency is lower, mainly because the shape profile of termination part is irregular contour, when carrying out Set and Positioning, difficulty is comparatively large, mainly carries out clamping and centering by chuck in the prior art, but when clamping at substantial time and efforts and centering precision is lower, the requirement of the manufacturing can not be met far away.
Summary of the invention
Utility model technical problem to be solved is:
The utility model provides a kind of drawing pull bar end machining fixture, and solve the termination clamping efficiency when clamping existed in prior art low, the problem that centering precision is low, improves efficiency and the centering precision of clamping by the utility model.
The purpose of this utility model is achieved through the following technical solutions:
A kind of drawing pull bar end machining fixture, it is characterized in that, comprise mount pad, fixed head, positioning disk and the fastener for carrying out clamping and positioning to workpiece, described fixed head is vertically fixed on described mount pad, described positioning disk is fixedly installed on above described fixed head, described positioning disk offers the second screwed hole, described fastener comprises the first fastening assembly and two the second fastening assemblies; Described first fastening assembly comprises hold-down nut, studs, gland and pad, described gland offers on the 3rd screwed hole, described pad and offer the 4th screwed hole, described studs is tightened after being screwed into described hold-down nut, described 3rd screwed hole, described 4th screwed hole and described second screwed hole successively and is fixed in described positioning disk; Described second fastening assembly comprises locating dowel and puller bolt, described locating dowel offers the 5th screwed hole, and described puller bolt is screwed in described 5th screwed hole; Two described locating dowels are symmetricly set in the both sides of described fixed head.
Further, described fixed head offers the first screwed hole, the lower end of described positioning disk is provided with stud, and described stud is screwed in described first screwed hole, and described positioning disk upper end is provided with chamfering.
Further, described fixed head is arranged at the lower end of described mount pad, and described mount pad upper end is provided with balancing weight, and described balancing weight is fixed on described mount pad.
Further, the bottom surface of described fixed head is provided with stiffener, wherein one end of described stiffener is fixedly connected with described mount pad.
Further, described mount pad is circular slab, and described balancing weight is semicircular plate.
The utility model compared with prior art has many advantages and good effect:
The utility model is by arranging a mount pad, mount pad arranges fixed head, irregularly shaped positioning disk of establishing on fixed head according to workpiece positions workpiece, realize the positioning compression to workpiece above-below direction by the first fastening assembly simultaneously, by the second fastening assembly, clamping is positioned to workpiece left and right directions, the clamping of workpiece is more rapidly and efficiently facilitated, improves the centering precision of workpiece simultaneously, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model drawing pull bar end machining fixture front view;
Fig. 2 is the utility model drawing pull bar end machining fixture top view;
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
Shown in Fig. 1-Fig. 2, the embodiment of a kind of drawing pull bar end machining of the utility model fixture (being hereinafter called for short end machining fixture), comprise mount pad 1, fixed head 2, positioning disk 3 and the fastener for carrying out clamping and positioning to workpiece, described fixed head 2 is vertically fixed on described mount pad 1, described positioning disk 3 is fixedly installed on above described fixed head 2, described positioning disk 3 offers the second screwed hole, and described fastener comprises the first fastening assembly 4 and two the second fastening assemblies 5; Described first fastening assembly 4 comprises hold-down nut 41, studs 42, gland 43 and pad 44, described gland 43 offers on the 3rd screwed hole, described pad 44 and offer the 4th screwed hole, described studs 42 is tightened after being screwed into described hold-down nut, described 3rd screwed hole, described 4th screwed hole and described second screwed hole successively and is fixed in described positioning disk 3; Described second fastening assembly 5 comprises locating dowel 51, puller bolt 52, described locating dowel 51 offers the 5th screwed hole 511, and described puller bolt 52 is screwed in described 5th screwed hole 511; Two described locating dowels 51 are symmetricly set in the both sides of described fixed head.
Specifically, in the present embodiment, mount pad 1 is the matrix of end machining fixture, by mount pad 1, end machining fixture is arranged on lathe, to carry out installing before workpiece first by end machining fixture clamping in the corresponding position of lathe, complete centering, and then carry out the clamping of workpiece 8, when clamping workpiece 8, first fixed head 2 is vertically set on mount pad, fixed head 2 is one piece of square plate, when mounted as the fixing gripper shoe of workpiece 8 and benchmark, then workpiece 8 is placed on fixed head 2 and carries out preliminary location by the positioning disk 3 pairs of workpiece 8 be arranged on fixed head 2 simultaneously, positioned by the centre bore of the first fastening assembly 4 pairs of workpiece 8 and the end face of workpiece again, by the second fastening assembly 5, workpiece 8 is carried out to centering and the location of X-direction, finally the tailstock of lathe is pushed through, the thimble head of tailstock is withstood workpiece 8, first fastening assembly 4 and the second fastening assembly 5 are fixedly clamped, realize being completely fixed workpiece 8, at this moment namely the quick machining of termination workpiece 8 on lathe can be carried out on lathe.
Preferably, fixed head 2 in the present embodiment offers the first screwed hole, the positioning disk 3 that workpiece 8 is positioned is offered to the second screwed hole, positioning disk 3 comprises the dish type location division being positioned at upper end and the stud 32 be connected and fixed with upper end, when being connected with fixed head 2, the stud 32 of positioning disk 3 lower end is screwed in the first following screwed hole of fixed head 2 completely, realization is tightened fixing, the dish type location division of upper end has also been fixed on the upper surface of fixed head 2 accordingly simultaneously, and upper end position place, dish type location division is provided with chamfering and adopts the positioning disk 3 of dish type the concrete shape of workpiece 8 to match, better realization is for the location of workpiece 8.
Concrete, the first fastening assembly 4 in the present embodiment mainly comprises hold-down nut 41, studs 42, gland 43, pad 44, gland 43 offers the 3rd screwed hole, pad 44 offers the 4th screwed hole, when positioning workpiece 8, first gland 43 is pressed on the end face of workpiece 8, pad 44 is placed on the top of gland 43, then double threaded screw 42 is constantly screwed and be screwed into, double threaded screw 42 successively passes gland 43 in the process be screwed into, pad 44, workpiece, finally be screwed in the second screwed hole that positioning disk 3 is offered, realize the Primary Location to workpiece 8 end face and centre bore, finally hold-down nut 41 is screwed on studs 42, when clamping workpiece 8, constantly tighten the final clamping and positioning that hold-down nut 41 realizes workpiece 8 above-below direction.
Further, the second fastening assembly 5 in the present embodiment comprises locating dowel 51 and puller bolt 52, locating dowel 51 is symmetricly set on the both sides of fixed head 2, specifically, on fixed head 2, corresponding position, locating dowel 51 position offers screwed hole, the bottom of locating dowel 51 is provided with fine thread post 512, locating dowel 51 is tightened on fixed head 2, certainly, locating dowel 51 also can directly be fixedly welded on fixed head 2, the 5th screwed hole 511 is offered in upper end simultaneously in locating dowel 51, puller bolt 52 is screwed in the 5th screwed hole 511, when positioning centering to workpiece 8, can by the centering constantly regulating the degree of tightness of puller bolt 52 to realize X-direction fast, the puller bolt 52 can tightening two ends after centering completes realizes being fixedly clamped to workpiece 8.
For guaranteeing the whole machine balancing of whole end machining fixture, fixed head 2 is arranged at the lower end of described mount pad 1, corresponding, arrange the balancing weight 6 for realizing counterweight in mount pad 1 upper end, balancing weight 6 to be installed with mount pad 1 by multiple bolt and is fixedly connected with.
For guaranteeing the fastness of the fixed head 2 of place work piece 8, the bottom surface of fixed head 2 arranges stiffener 7, realize strengthening fixing, stiffener 7 is fixedly installed on the bottom surface of fixed head 2, and one end is wherein fixedly connected with mount pad 1.
Preferably, the mount pad 1 in the present embodiment selects circular slab, corresponding, balancing weight 6 selects semicircular plate.
The above, it is only preferred embodiment of the present utility model, be not restriction the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solutions of the utility model content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (5)
1. a drawing pull bar end machining fixture, it is characterized in that, comprise mount pad, fixed head, positioning disk and fastener, described fixed head is vertically fixed on described mount pad, described positioning disk is fixedly installed on above described fixed head, described positioning disk offers the second screwed hole, described fastener comprises the first fastening assembly and two the second fastening assemblies; Described first fastening assembly comprises hold-down nut, studs, gland and pad, described gland offers on the 3rd screwed hole, described pad and offer the 4th screwed hole, described studs is tightened after being screwed into described hold-down nut, described 3rd screwed hole, described 4th screwed hole and described second screwed hole successively and is fixed in described positioning disk; Described second fastening assembly comprises locating dowel and puller bolt, described locating dowel offers the 5th screwed hole, and described puller bolt is screwed in described 5th screwed hole; Two described locating dowels are symmetricly set in the both sides of described fixed head.
2. drawing pull bar end machining fixture according to claim 1, it is characterized in that, described fixed head offers the first screwed hole, the lower end of described positioning disk is provided with stud, described stud is screwed in described first screwed hole, and described positioning disk upper end is provided with chamfering.
3. drawing pull bar end machining fixture according to claim 2, it is characterized in that, described fixed head is arranged at the lower end of described mount pad, and described mount pad upper end is provided with balancing weight, and described balancing weight is fixed on described mount pad.
4. drawing pull bar end machining fixture according to claim 3, is characterized in that, the bottom surface of described fixed head is provided with stiffener, and wherein one end of described stiffener is fixedly connected with described mount pad.
5. drawing pull bar end machining fixture according to claim 4, is characterized in that, described mount pad is circular slab, and described balancing weight is semicircular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772142.5U CN204339316U (en) | 2014-12-10 | 2014-12-10 | Drawing pull bar end machining fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772142.5U CN204339316U (en) | 2014-12-10 | 2014-12-10 | Drawing pull bar end machining fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204339316U true CN204339316U (en) | 2015-05-20 |
Family
ID=53222617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772142.5U Active CN204339316U (en) | 2014-12-10 | 2014-12-10 | Drawing pull bar end machining fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204339316U (en) |
-
2014
- 2014-12-10 CN CN201420772142.5U patent/CN204339316U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee after: CRRC SIFANG Co.,Ltd. Address before: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee before: CSR SIFANG ROLLING STOCK Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210720 Address after: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee after: Qingdao CRRC Sifang Rail Vehicle Co.,Ltd. Address before: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee before: CRRC SIFANG Co.,Ltd. |
|
| TR01 | Transfer of patent right |