JPH047343U

JPH047343U -

Info

Publication number: JPH047343U
Application number: JP4774090U
Authority: JP
Priority date: 1990-05-07
Filing date: 1990-05-07
Publication date: 1992-01-23

Description

[Brief explanation of the drawing]

第１図は本考案に係るレーザビームスキヤナモ
ータのジツター計測に於けるワーク固定装置の実
施例の平面図、第２図、第３図はそれぞれ第１図
の−断面図、−断面図、第４図はエアシ
リンダを駆動した時の断面説明図、第５図はジツ
ター計測の説明図、第６図、第７図はそれぞれ従
来例の平面図及び側面図である。１……レーザビームスキヤナモータ、２……ポ
リゴンミラー、３……ワークセツト台、４……ワ
ーク挿入用空間、５……上面開口、６……摺動部
材、７……ワーク押え部材、８……駆動手段、９
……エアシリンダ、１０……ピストンロツド、１
１……ジツター計測用センサ、１２……センサ箱
、１３……スタンド。 FIG. 1 is a plan view of an embodiment of a workpiece fixing device for jitter measurement of a laser beam scanner motor according to the present invention, and FIGS. 2 and 3 are a cross-sectional view and a cross-sectional view, respectively, of FIG. FIG. 4 is an explanatory cross-sectional view when the air cylinder is driven, FIG. 5 is an explanatory view of jitter measurement, and FIGS. 6 and 7 are a plan view and a side view of a conventional example, respectively. DESCRIPTION OF SYMBOLS 1...Laser beam scanner motor, 2...Polygon mirror, 3...Work setting table, 4...Work insertion space, 5...Top opening, 6...Sliding member, 7...Work holding member, 8...driving means, 9
...Air cylinder, 10...Piston rod, 1
1...Jitter measurement sensor, 12...Sensor box, 13...Stand.

Claims

[Scope of Claim for Utility Model Registration] 1. Irradiation of a laser beam onto a work set table on which a laser beam scanner motor, which is a test object, is placed, and a polygon mirror of the laser beam scanner motor placed on the work set table. a jitter measurement sensor that generates an electrical signal by receiving a laser beam output from the laser oscillator and reflected on a surface of a polygon mirror; and a jitter measurement sensor that generates an electrical signal based on the output signal of the jitter measurement sensor. A jitter analyzer for calculating the jitter value of a laser beam scanner motor, and a jitter measuring device for a laser beam scanner motor, which includes a space for inserting a workpiece opened to the rear in the workpiece set table, and a space for inserting a workpiece on the upper surface at least for the laser beam scanner motor. a wedge-shaped sliding member having a protruding rotating shaft, an upper opening connected to the workpiece insertion space, the upper surface forming an inclined surface in the workpiece insertion space, and capable of sliding back and forth; , a wedge-shaped work holding part whose lower surface has an inclined surface that is restricted from moving in the front-rear direction and overlaps with the upper surface of the sliding member, and whose upper surface constitutes a flat surface that presses the lower surface of the laser beam scanner motor; A workpiece fixing device for measuring jitter of a laser beam scanner motor, comprising a drive means for moving the sliding member in the front-back direction. 2. A workpiece fixing device for jitter measurement of a laser beam scanner motor according to claim 1, which utilizes an air cylinder as a driving means.