Double-zero-position caliper

Double-zero-position caliper

CN
  • CN 102,331,213 A
  • Filed: 09/26/2011
  • Published: 01/25/2012
  • Est. Priority Date: 09/26/2011
  • Status: Active Grant
First Claim
Patent Images

1. two zero-bit slide calliper rule comprise two zero-bit chi bodies and micrometer mechanism;

  • Said pair of zero-bit chi body comprises main scale and secondary chi;

    Said micrometer mechanism is mechanical scale or electronic displacement sensor or vernier subdividing device;

    Said main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of 1 millimeter integral multiple that said main scale chi body is marked with in twos distance, is original zero-bit apart from the nearest initial integer groove of quiet measuring jaw;

    Said secondary chi contains said main scale chi body and can orientation motionless relative to the self-locking of said main scale chi body or the said integer groove in edge move;

    It is characterized in that;

    Secondary chi and the secondary chi in back before said secondary chi has, the secondary chi in said back can move in limited range by secondary chi before said, and moving direction is parallel with the orientation of said integer groove;

    Secondary chi has momentum pawl and mark before said;

    Secondary chi is responsible for measuring the round values of measured value before said, and the secondary chi in said back is responsible for measuring the poor of measured value and said round values;

    Secondary chi is a framework before said, and said framework bottom articulates a lever, and this lever free end is provided with the roller that an ability is freely rotated, and this roller is near the downside of said main scale chi body;

    The secondary chi of said lever and said back is provided with the clutch that cooperatively interacts;

    When pushing said roller and making its downside that contacts said main scale chi body, said deviation of lever, said clutch is closed;

    At this moment, said forward and backward secondary chi forms the rigid structure of synchronous shift;

    Unclamp said roller, said lever resets, and said clutch separately;

    The self-locking mechanism formed by lock shaft and compression spring of tool also on the secondary chi before said;

    Said lock shaft is provided with locking face and said main scale chi body closely supports, thereby secondary chi before said is locked on the said main scale chi body and can not moves;

    The said lever of said lock shaft one end butt;

    The power that said lever is applied on the said lock shaft makes said locking face separate with said main scale chi body;

    Thereby make said before locking state between secondary chi and the said main scale chi body remove, secondary chi can move along the orientation of said integer groove before this moment was said;

    Said lever is applied to power on the said lock shaft cancel after, said compression spring makes said lock shaft reset, and makes said lock shaft return to the locking state that closely supports with said main scale chi body;

    The secondary chi in said back also is a framework;

    And the secondary chi in back has the locating shaft that only can move along direction of axis line;

    Said locating shaft partly is placed in the framework, is set with flexible member on the said locating shaft, and this flexible member can make said locating shaft after making its external force that produces displacement cancel, reset;

    It is concavo-convex that described main scale is provided with a registration;

    The radially section configuration of shape that said location is concavo-convex and said locating shaft is complementary;

    The concavo-convex quantity in said location can make its spread length equal calibrated span at least;

    The concavo-convex shape in each said location is all identical with size, and concavo-convex center, each said location all keeps changeless corresponding relation with said integer groove, and the concavo-convex centre distance in adjacent two said location equates;

    When the mark of secondary chi is aimed at said original zero-bit before said, push said roller and make said clutch closed, the symcenter of said locating shaft overlaps with concavo-convex center, certain said location, and this location is concavo-convex, and to be initial location concavo-convex;

    Said forward and backward secondary chi is designated as δ

    '"'"' in the orientation of said integer groove, separating a bit of distance;

    The secondary chi of secondary chi and said back is provided with the stop means that cooperatively interacts before said, the maximum displacement distance ≯

    δ

    '"'"' of secondary chi before said stop means makes the secondary chi in said back said relatively;

    When said clutch was closed, said forward and backward secondary chi was designated as δ

    at the separating distance in the orientation of said integer groove, δ

    '"'"'>

    δ

    >

    =1 millimeter and equal the said location of a row concavo-convex in adjacent two centre distance that the location is concavo-convex;

    The relative motion of said micrometer mechanism part be packed in respectively said before on the secondary chi with the secondary chi in said back on, make said micrometer mechanism can produce impulse stroke;

    Said micrometer mechanism only measure and show the secondary chi in said back said relatively before the shift length of secondary chi.

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