7  EP 3 800 007 A1 8  stalling the eyeglass lens peripheral edge processing system is less likely to be limited, and an installatio space is easily reduced. arm unit itself in a direction paralleltothe placementsur- face, even in a case where a movement distance of the object is longer than a movable range of the arm unit. Therefore, the plurality of eyeglass lens peripheral edge processing devices are freely disposed in a further im- proved manner. 5 10 15 [0015] In addition, the arm movement unit may move the armunitin a direction (heightdirection)perpendicular to the placement surface. In this case, for example, an insertion angle when the eyeglass lens is inserted into the eyeglass manufacturing device is freely set in a fur- ther improved manner by changing a height of the arm unit. [0010] The robot arm may perform both an operation for pivoting the holding unit to orient the holding unit to- ward the eyeglass manufacturing device and an opera- tionfordriving the armunittochange a distance between the eyeglass manufacturing device and the holding unit. In this case, the disposition of the plurality of eyeglass manufacturing devices is much less likely to be limited. [0011] The installation surface of the robot arm may be a horizontal surface. The plurality of eyeglass manu- facturing devices may be disposed to surround the robot arm along a circumferential direction round on the rota- tionaxis(hereinafter,referred to as a "pivotaxis")around which the robot arm installed on the installation surface pivots the holding unit. In this case, for example, com- pared to acasewhere the plurality ofeyeglass manufac- turing devices are aligned on a straight line along the conveyor,aspace forinstallingthe eyeglass lens periph- eral edge processing system can be more easily duced.Furthermore,the robotarmpivotsthe holding unit. 20 [0016] However, a position of the robot arm may be fixed. Even in this case, the plurality of eyeglass manu- facturing devices is freely disposed in a sufficiently im- proved manner, compared to a case where only a con- veyorisused.In addition,ina case where the armmove- ment unit is used, the arm movement unit may move the arm unit in both the direction parallel to the placement surfaceand the direction perpendicularto the installation surface, or may move the arm unit only in one of the direction parallelto the placement surface and the direc- tion perpendicular to the installation surface. [0017] The eyeglass lens peripheral edge processing system may include a plurality of the robot arms. In this case,each ofthe plurality ofrobotarmscan be independ- ently driven.Accordingly,the plurality ofeyeglasslenses can be moved in parallel by the plurality of robot arms. Therefore, the plurality of steps can be more smoothly performed. In addition, the object (for example, the eye- glass lens) may be transferred between the plurality of robot arms. In this case, compared to a case where one robot arm is used, a range in which the object can be moved by the robot arm is enlarged. Therefore, the eye- glass lens peripheral edge processing system is freely disposed in the further improved manner. 25 30 35 40 In this manner, the robot arm can easily move (switch) the eyeglasslens between the plurality ofeyeglass man- ufacturing devices disposed to surround the robot arm. Therefore,the eyeglasslens ismore properlyprocessed. [0012] In a case where three or more eyeglass manu- facturing devicesare used,the plurality ofeyeglassman- ufacturing devices may be disposed clockwise or coun- terclockwise in the order of performing the steps on the eyeglass lens whenviewed in a directionofthe pivotaxis ofthe robotarm.In thiscase,the robotarmcan smoothly move the eyeglass lens to each of the plurality of eye- glass manufacturing devices in the order of performing the steps. [0013] In addition,in the eyeglass lens peripheraledge processing system, a standby position where the eye- glass lens stands before the plurality of steps are per- formed by the plurality of eyeglass manufacturing devic- es may be set. The standby position may be provided at a positionthatsurrounds the robotarm alongthe circum- ferential direction round on the pivot axis together with the plurality of eyeglass manufacturing devices. In addi- tion,inthe eyeglass lensperipheraledge processing sys- tem, a completion position for moving the eyeglass lens after the plurality of steps are completed by the plurality ofeyeglass manufacturingdevices may be set.The com- pletion position may be provided at a position that sur- rounds the robot arm along the circumferential direction round on the pivot axis together with the plurality of eye- glassmanufacturing devices.In thiscase,an installation space of the eyeglass lens peripheral edge processing system including atleastoneofthestandbyposition and the completion position can be further reduced. 45 50 55 [0018] An eyeglass lens peripheral edge processing system described as an example in the present disclo- sure includes a plurality of eyeglass manufacturing de- vices, a robot arm, and a controller. The plurality of eye- glass manufacturing devices perform mutually different steps outofa pluralityofsteps forprocessing aneyeglass lens, and have mutually different housings. The robot arm includes an arm unitand aholding unit.The arm unit has a plurality of joint portions. The holding unit is pro- vided in the arm unit to hold and release an object. The robotarmrotatesthe armunitvia the jointportion to move the object held by the holding unit. The controller per- forms various controls on the eyeglass lens peripheral edge processing system. The controller performs a po- sition storing processand amovementprocess.The con- troller that performs the position storing process stores installation position information indicating an installation position where the eyeglasslens is installed and unload- ed for each of the plurality of eyeglass manufacturing devices,ina memorydevice.The controllerthatperforms the movementprocesscontrolsan operation ofthe robot [0014] Therobotarmmayfurtherinclude an armmove- ment unit that moves the arm unit in a direction which is at least parallel to a placement surface. In this case, the robot arm can properly move the object by moving the 5