The parallel equidistant leaf spring set is a structure commonly used in measurement and can transmit the measured value. Some are not directly measurable and must be measured by a series of structural connections through a pair of parallel equidistant leaf springs. For example, the outer ring and the inner ring of the double row ball bearing are parallel double channels. In the manufacturing process, it is required to check the position h of the channel I to the reference end face and the distance L between the two grooves and the parallelism. The distance L between the two grooves needs to be measured by a double parallel equidistant spring piece set. The basic structure of the mechanism uses the measurement principle of the comparative measurement method, taking the outer ring of the bearing as an example.
Two sets of parallel spring pieces are vertically fixed on the base in parallel equidistant form, and the upper end respectively hinges and supports the left floating plate 4 and the right floating plate respectively, the instrument I card seat is fixed on the base, and the instrument II card seat is fixed on the left floating plate Below, the left and right arm swivel shaft seats are respectively fixed on the left and right floating plates, and the rod type measuring arms are embedded in the tubular measuring arms, which are respectively connected in a cantilever manner to the rotating shaft hinged on the left and right rotating shaft seats. For a whole. The rod and the tube measuring arm can realize the synchronous lifting and falling movement. When measuring, according to the size of the two channel positions of the tested bearing ring, the distance between the right measuring head and the left measuring head on the rod and the measuring arm is adjusted first, and the lower The pressure lever lifting rod and the tube measuring arm are simultaneously lifted, and the bearing ring to be tested is placed on the adjusted V-shaped positioning block, so that the reference end face of the tested bearing ring rests on the positioning baffle, and the falling lever is lifted. The right probe and the left probe on the rack and the tube measuring arm are respectively pressed against the two channels of the tested bearing ring by the action of their own gravity and the spring pulling force, and the floating plates on the parallel spring piece group are respectively The free float is self-aligned to the center of the channel and is in a state to be measured.
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