CN105269482A - Projector clamp for measuring thread type of bone screw - Google Patents
Projector clamp for measuring thread type of bone screw Download PDFInfo
- Publication number
- CN105269482A CN105269482A CN201410846674.3A CN201410846674A CN105269482A CN 105269482 A CN105269482 A CN 105269482A CN 201410846674 A CN201410846674 A CN 201410846674A CN 105269482 A CN105269482 A CN 105269482A
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- column
- fixed leg
- nail
- bone screw
- base plate
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Abstract
A projector clamp for measuring the thread type of a bone screw comprises a base plate fixing base, a base plate rotating disk, an angle block and a screw fixing structure, wherein the screw fixing structure comprises a stand column, a nail point fixing column and a nail cap fixing column; and the angle block is of a curve-side trapezoid structure, is located on the base plate fixing base and is connected with the base plate rotating disk. The projector clamp is convenient and fast to operate; part of the thread type, shielded by a helix angle, of the bone screw can be easily avoided through a rotating structure and the angle block, measurement can be effectively performed in the manufacturing process, and it is guaranteed that workpiece products are qualified; and meanwhile the projector clamp is simple in structure and low in cost, manual operation or mechanical operation can be performed, and the projector clamp is suitable for being used in large-scale production.
Description
Technical field
The present invention relates to the technical field that assistive device produced by medicine equipment, is a kind of measurement bone screw tooth form projecting apparatus fixture specifically.
Background technology
Bone screw is the important assistive device in operation, strict demand is had for bone screw size, shape etc. in operation, the underproof bone screw of tooth form can improve operating difficulty, affect surgical effect and even cause operative failure, therefore, bone screw needs to measure accurately after completing.
Current production and processing process, because bone screw is less, generally need to carry out subsidiary by projecting apparatus, owing to there is lead angle in bone screw, therefore need to rotate bone screw in measuring process, still effectively can not control for this process in conventional art, and cause measurement result to produce error thus.
Screw originally all has use in a lot of field, and we retrieve non medical instruments production field, find following technology:
Chinese patent, wire clamp (the application number: 201220240037.8) provide a kind of wire clamp of three-dimensional morphology trace compare measuring instrument, comprise chassis, bearing and swing arm, a tie down screw coordinates through connecting with locking nut after bearing and swing arm, be respectively equipped with the spring of a pull bar and cooperation thereof in swing arm two ends swing arm seat, the outside one end of pull bar is connected with adjustment handwheel, inwardly one end and connects workpiece apical ring; This technical scheme provide a kind of rotatable, can the fixture scheme of hold-down screw shape equipment, but still anglec of rotation control problem can not be solved.
Chinese patent, for air plug gauge fixture (application number: the fixture 200710171553.3) providing a kind of air plug gauge, the clamping structure be wherein made up of vee-block, tail spindle, snap ring, only head screw etc. can be used for screw; This technical scheme provides a kind of fixed structure, but does not relate to rotation, more can not solve anglec of rotation control problem.
Chinese patent, screw-driving, center height survey machine (application number: 201410467842.8), provide a kind of screw-driving apparatus, comprise servomotor, decelerator, dynamic torque sensor and screw sleeve, servomotor output is connected with decelerator input, the output shaft of decelerator is connected by shaft coupling with removable screw sleeve, and dynamic torque sensor is connected with shaft coupling; The side of screw-driving apparatus is vertically also provided with multiple position sensor; The advantage of this technical scheme is to adopt mechanical automation to control, and reduce the error because manual operation produces, but cost is higher, and screw handling speed is comparatively slow, can not meet large-scale production and application.
Summary of the invention
The object of the invention is for traditional handicraft and deficiency of the prior art, provide one and be specifically designed to measurement bone screw tooth form projecting apparatus fixture.
The technical solution used in the present invention is:
A kind of measurement bone screw tooth form projecting apparatus fixture, comprise base plate fixing holder, chassis rotating disc, angle block gauge and screw fixed structure, wherein, chassis rotating disc is connected by the pin that is rotatably connected with base plate fixing holder, chassis rotating disc can rotate centered by the pin that is rotatably connected, base plate fixing holder and chassis rotating disc are cuboid, screw fixed structure comprises column, nail tip fixed leg, head of a nail fixed leg, column has two, be individually fixed in the two ends that chassis rotating disc is longer, nail tip fixed leg, head of a nail fixed leg respectively has one, to lay respectively on two root posts and position is corresponding, nail tip fixed leg comprises bolt, nut and thrust spring, bolt is through column, bolt head is fluted, and point to head of a nail fixed leg direction, bolt tail is emerged at the opposite side of column, and be connected with nut, thrust spring is wrapped on the stud between bolt head and column, head of a nail fixed leg comprises column and locking nail, column is through column, one end towards nail tip fixed leg is cone, locking nail is bolt arrangement, bolt head is outside column, stud is connected by the screw on column and head of a nail fixed leg, angle block gauge is bent limit prismatoid structure, to be positioned on base plate holder and and chassis rotating disc connect.
Base plate fixing holder upper surface has two bulge-structures, bulge-structure body at a right angle, right angle coincide with the minor face of base plate fixing holder upper surface and length is identical, while and the long limit of base plate fixing holder upper surface coincide, and length is less than the half on long limit.
Angle block gauge has multiple, and corresponding to its bent limit, angle is identical with the lead angle of the bone screw of different tooth form respectively.
Column and chassis rotating disc upper surface perpendicular.
The bolt tail center of nail tip fixed leg, bolt head center, the cone tips 3 of head of a nail fixed leg is located on the same line, the stud of nail tip fixed leg, the column of nut fixed leg all and chassis rotating disc upper surface parallel.
The groove of nail tip fixed leg bolt head has multiple, respectively the bone screw tip of corresponding different model.
The advantage that the present invention has and good effect are:
The simple operation of measurement bone screw tooth form projecting apparatus fixture of the present invention, the part tooth form that bone screw blocks because of lead angle can be avoided easily by rotational structure and angle block gauge, making in process and can effectively measure, ensure the qualified of workpiece product, structure of the present invention is simple, with low cost simultaneously, can manual hand manipulation or mechanically actuated, be applicable to use in large-scale production.
Accompanying drawing explanation
Fig. 1 is the stereogram of measurement bone screw tooth form projecting apparatus fixture of the present invention.
Fig. 2 is the schematic diagram of angle block gauge in measurement bone screw tooth form projecting apparatus fixture of the present invention.
Fig. 3 is the duty stereogram of measurement bone screw tooth form projecting apparatus fixture of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, technical scheme is specifically described.
As shown in the figure, a kind of measurement bone screw tooth form projecting apparatus fixture, comprise base plate fixing holder 1, chassis rotating disc 2, angle block gauge 3 and screw fixed structure, wherein, chassis rotating disc is connected by the pin 4 that is rotatably connected with base plate fixing holder, chassis rotating disc can rotate centered by the pin that is rotatably connected, base plate fixing holder and chassis rotating disc are cuboid, screw fixed structure comprises column 5, nail tip fixed leg 6, head of a nail fixed leg 7, column has two, be individually fixed in the two ends that chassis rotating disc is longer, nail tip fixed leg, head of a nail fixed leg respectively has one, to lay respectively on two root posts and position is corresponding, nail tip fixed leg comprises bolt, nut and thrust spring 8, bolt is through column, bolt head is fluted, and point to head of a nail fixed leg direction, bolt tail is emerged at the opposite side of column, and be connected with nut, thrust spring is wrapped on the stud between bolt head and column, head of a nail fixed leg comprises column and locking nail 9, column is through column, one end towards nail tip fixed leg is cone, locking nail is bolt arrangement, bolt head is outside column, stud is connected by the screw on column and head of a nail fixed leg, angle block gauge is bent limit prismatoid structure, to be positioned on base plate holder and and chassis rotating disc connect, chosen angle block bent corner degree is identical with surveyed bone screw lead angle.
Base plate fixing holder upper surface there are two bulge-structures 10, bulge-structure body at a right angle, the one side at right angle coincides with the minor face of base plate fixing holder upper surface and length is identical, and the long limit of base plate fixing holder upper surface coincides, and length is less than the half on long limit.
Column and chassis rotating disc upper surface perpendicular.
The bolt tail center of nail tip fixed leg, bolt head center, the cone tips 3 of head of a nail fixed leg is located on the same line, the stud of nail tip fixed leg, the column of nut fixed leg all and chassis rotating disc upper surface parallel.
The groove of nail tip fixed leg bolt head has multiple, respectively the bone screw tip of corresponding different model.
Bone screw 11 is fixed on fixture by nail tip fixed leg and head of a nail fixed leg.
During work, be placed on by fixture on projecting apparatus horizontal table and ajust, bone screw and projector light source keep vertical, measure, slighter swivel base rotating disc, make just can put down angle block gauge between chassis rotating disc and the bulge-structure of base plate fixing holder, measure.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention with preferred embodiment openly as above, but, and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (6)
1. measure bone screw tooth form projecting apparatus fixture for one kind, comprise base plate fixing holder, chassis rotating disc, angle block gauge and screw fixed structure, it is characterized in that, chassis rotating disc is connected by the pin that is rotatably connected with base plate fixing holder, chassis rotating disc can rotate centered by the pin that is rotatably connected, base plate fixing holder and chassis rotating disc are cuboid, screw fixed structure comprises column, nail tip fixed leg, head of a nail fixed leg, column has two, be individually fixed in the two ends that chassis rotating disc is longer, nail tip fixed leg, head of a nail fixed leg respectively has one, to lay respectively on two root posts and position is corresponding, nail tip fixed leg comprises bolt, nut and thrust spring, bolt is through column, bolt head is fluted, and point to head of a nail fixed leg direction, bolt tail is emerged at the opposite side of column, and be connected with nut, thrust spring is wrapped on the stud between bolt head and column, head of a nail fixed leg comprises column and locking nail, column is through column, one end towards nail tip fixed leg is cone, locking nail is bolt arrangement, bolt head is outside column, stud is connected by the screw on column and head of a nail fixed leg, angle block gauge is bent limit prismatoid structure, to be positioned on base plate holder and and chassis rotating disc connect.
2. measurement bone screw tooth form projecting apparatus fixture according to claim 1, it is characterized in that: base plate fixing holder upper surface has two bulge-structures, bulge-structure body at a right angle, the one side at right angle coincides with the minor face of base plate fixing holder upper surface and length is identical, while coincide with the long limit of base plate fixing holder upper surface, and length is less than the half on long limit.
3. measurement bone screw tooth form projecting apparatus fixture according to claim 1 and 2, it is characterized in that: angle block gauge has multiple, and corresponding to its bent limit, angle is identical with the lead angle of the bone screw of different tooth form respectively.
4. measurement bone screw tooth form projecting apparatus fixture according to claim 1 and 2, is characterized in that: column and chassis rotating disc upper surface perpendicular.
5. measurement bone screw tooth form projecting apparatus fixture according to claim 4, it is characterized in that: the bolt tail center of nail tip fixed leg, bolt head center, the cone tips 3 of head of a nail fixed leg is located on the same line, the stud of nail tip fixed leg, the column of nut fixed leg all and chassis rotating disc upper surface parallel.
6. measure bone screw tooth form projecting apparatus fixture according to claim 1 or 5, it is characterized in that: the groove of nail tip fixed leg bolt head has multiple, respectively the bone screw tip of corresponding different model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410846674.3A CN105269482B (en) | 2014-12-31 | 2014-12-31 | The fixture of bone screw tooth form is measured using projecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410846674.3A CN105269482B (en) | 2014-12-31 | 2014-12-31 | The fixture of bone screw tooth form is measured using projecting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105269482A true CN105269482A (en) | 2016-01-27 |
| CN105269482B CN105269482B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410846674.3A Active CN105269482B (en) | 2014-12-31 | 2014-12-31 | The fixture of bone screw tooth form is measured using projecting apparatus |
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| CN (1) | CN105269482B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666437A (en) * | 2016-02-26 | 2016-06-15 | 苏州奥特科机械有限公司 | Circuit board rotary fixing clamp |
| CN107449362A (en) * | 2017-08-30 | 2017-12-08 | 江西昌河航空工业有限公司 | A kind of adjusting means for being used to measure thread parameter on optical measuring instrument |
| CN109540000A (en) * | 2018-12-14 | 2019-03-29 | 厦门英昊达精密设备有限公司 | The method that inherent characteristic based on medical implantable bone nail searches automatically and measures its outer dimension |
| CN112917408A (en) * | 2021-01-18 | 2021-06-08 | 东北电力大学 | Projection arrangement that visual transmission design was used |
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| CN104236682A (en) * | 2014-09-30 | 2014-12-24 | 四川泛华航空仪表电器有限公司 | Universal flowmeter vibration test clamp |
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2014
- 2014-12-31 CN CN201410846674.3A patent/CN105269482B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120305815A1 (en) * | 2002-06-17 | 2012-12-06 | Johnson Stanley P | Methods for measuring at least one physical characteristic of a component |
| US20060060092A1 (en) * | 2004-09-17 | 2006-03-23 | Chun-Nan Wu | Screw press head detector |
| JP5435994B2 (en) * | 2009-03-18 | 2014-03-05 | 本田技研工業株式会社 | Non-contact shape measuring device |
| CN202188834U (en) * | 2011-07-19 | 2012-04-11 | 上海寸银实业有限公司 | Screw thread tooth angle measuring auxiliary device |
| KR20140003011A (en) * | 2012-06-28 | 2014-01-09 | 현대제철 주식회사 | Parts fixing device for 3d scanner |
| CN202710179U (en) * | 2012-06-29 | 2013-01-30 | 惠州市德赛西威汽车电子有限公司 | Light testing clamp |
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| CN103604379A (en) * | 2013-10-29 | 2014-02-26 | 中国船舶重工集团公司第七二五研究所 | Fixing device for round-bar stretching sample with gap and measurement method for diameter at gap |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666437A (en) * | 2016-02-26 | 2016-06-15 | 苏州奥特科机械有限公司 | Circuit board rotary fixing clamp |
| CN107449362A (en) * | 2017-08-30 | 2017-12-08 | 江西昌河航空工业有限公司 | A kind of adjusting means for being used to measure thread parameter on optical measuring instrument |
| CN109540000A (en) * | 2018-12-14 | 2019-03-29 | 厦门英昊达精密设备有限公司 | The method that inherent characteristic based on medical implantable bone nail searches automatically and measures its outer dimension |
| CN112917408A (en) * | 2021-01-18 | 2021-06-08 | 东北电力大学 | Projection arrangement that visual transmission design was used |
| CN112917408B (en) * | 2021-01-18 | 2022-09-09 | 东北电力大学 | Projection arrangement that visual transmission design was used |
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| Publication number | Publication date |
|---|---|
| CN105269482B (en) | 2017-07-28 |
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