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CN-121977492-A - Precise measurement equipment for inner and outer diameters of gear ring

CN121977492ACN 121977492 ACN121977492 ACN 121977492ACN-121977492-A

Abstract

The invention provides precise measurement equipment for the inner diameter and the outer diameter of a gear ring, which belongs to the technical field of measurement and comprises a workbench, a positioning mechanism, an outer diameter detection mechanism and an inner diameter detection mechanism. According to the precision measurement equipment for the inner diameter and the outer diameter of the gear ring, the inner diameter detection mechanism and the outer diameter detection mechanism share the same set of positioning mechanism and the gear ring in the same rotation state, the measurement of the inner diameter and the outer diameter of the gear ring can be synchronously completed in one clamping and the same reference, a tool is not required to be replaced, a secondary clamping is not required, the detection process is greatly simplified, the equipment input cost and the manual operation cost are reduced, the problem of additional measurement errors caused by inconsistent split clamping and positioning references in the prior art is solved, the relevance and the accuracy of inner diameter measurement data and outer diameter measurement data are remarkably improved, and the overall dimensional precision of the gear ring can be more truly and comprehensively reflected.

Inventors

  • PAN PENG
  • ZHANG GUOZHANG

Assignees

  • 海迈特(北京)技术有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (14)

  1. 1. A precision measurement apparatus for an inner diameter and an outer diameter of a ring gear, comprising: a work table (1); The positioning mechanism comprises a bearing tool (5), two clamping parts and a rotating disc (13), wherein the bearing tool (5) is fixed on the upper end face of the workbench (1) and is used for placing a gear ring (27) to be tested, the two clamping parts are respectively arranged on the left side and the right side of the bearing tool (5) and are used for clamping on the two sides of the gear ring (27) to be tested, and the rotating disc (13) is arranged on the workbench (1) and rotates around the axial direction and abuts against the outer wall of the gear ring (27) to be tested to drive the gear ring (27) to be tested to rotate; The outer diameter detection mechanism comprises two lower fixing blocks (14) and two contact type telescopic measuring instruments (15), wherein the two lower fixing blocks (14) are symmetrically arranged on the left side and the right side of the bearing tool (5), the two contact type telescopic measuring instruments (15) are respectively arranged on the two lower fixing blocks (14), the two contact type telescopic measuring instruments (15) are coaxial and perpendicular to the axial direction of a gear ring (27) to be detected, and the two detection ends of the two contact type telescopic measuring instruments are abutted against the outer wall of the gear ring (27) to be detected in a rotating state by means of the telescopic characteristic of the two contact type telescopic measuring instruments so as to measure the outer diameter or roundness of the gear ring (27) to be detected; The inner diameter detection mechanism comprises a support frame (4), two upper sliding plates (21), a bidirectional driving unit and two displacement sensors (32), wherein the support frame (4) is fixed on the upper end face of a workbench (1), the two upper sliding plates (21) are symmetrically arranged on the left side and the right side of the support frame (4), the two displacement sensors (32) are respectively arranged on the two upper sliding plates (21), the upper sliding plates (21) are provided with downward extending probes (41), the lower parts of the two probes (41) are inserted into an inner hole of a gear ring (27) to be detected, the bidirectional driving unit synchronously drives the two upper sliding plates (21) to be relatively far away, and the lower parts of the two probes (41) are driven to be propped against the inner wall of the gear ring (27) to be detected, so that the inner diameter or roundness of the gear ring (27) to be detected in a rotating state is measured through the two displacement sensors (32).
  2. 2. A precision measuring apparatus for the inner and outer diameters of a ring gear as set forth in claim 1, further comprising: the two lower transverse sliding rails (7) are respectively arranged on the upper end face of the workbench (1) and on the left side and the right side of the bearing tool (5); The two lower sliding plates (6) are arranged on the two lower transverse sliding rails (7) in a one-to-one corresponding sliding manner, a strip-shaped groove is formed in each lower sliding plate (6), each lower fixing block (14) penetrates through the corresponding strip-shaped groove from bottom to top, the contact type telescopic measuring instrument (15) is positioned above each lower sliding plate (6), and each lower sliding plate (6) is used for avoiding the corresponding lower fixing block (14) through the corresponding strip-shaped groove; The bidirectional cylinder (8) is fixedly arranged at the front side or the rear side of the bearing tool (5), and two driving ends of the bidirectional cylinder (8) are respectively connected with two lower sliding plates (6) so as to drive the two lower sliding plates (6) to synchronously move oppositely or backwards; Wherein the two clamping parts are arranged at opposite ends of the two lower sliding plates (6) in a one-to-one correspondence manner.
  3. 3. A precision measuring apparatus for an inner and outer diameter of a ring gear according to claim 2, wherein said holding portion comprises: the two extending blocks (9) are respectively arranged at one end of the corresponding lower sliding plate (6) close to the bearing tool (5), and the two extending blocks (9) are arranged at intervals front and back; The two rotary bearings (10) are horizontally and correspondingly arranged at one end, close to the bearing tool (5), of the two extension blocks (9) in a one-to-one mode; The four rotary bearings (10) on two sides respectively lean against the outer wall of the gear ring (27) to be tested, so that rolling supports in four areas are formed in the rotating state of the gear ring (27) to be tested.
  4. 4. A precision measuring apparatus for the inner and outer diameters of a ring gear as set forth in claim 3, further comprising: the pressing driving piece (11) is arranged at the front side or the rear side of the bearing tool (5), and the pressing driving piece (11) is provided with a linear driving path in the front-rear direction; The rotary driving piece is provided with a driving end of the pressing driving piece (11), and the rotary disk (13) is horizontally arranged at the driving end of the rotary driving piece; the edge of the rotary disc (13) is driven by the pressing driving piece (11) to abut against the outer wall of the gear ring (27) to be tested, and the rotary disc (13) is driven by the rotary driving piece to horizontally rotate so as to drive the gear ring (27) to be tested to rotate.
  5. 5. A precision measurement device for an inner and outer diameter of a ring gear according to claim 4, further comprising: the position detection element (16) is arranged on one side, far away from the pressing driving piece (11), of the bearing tool (5) and is used for detecting the position of the gear ring (27) to be detected on the bearing tool (5).
  6. 6. A precision measuring apparatus for the inner and outer diameters of a ring gear as set forth in claim 1, further comprising: The lifting slide rail (18) is longitudinally arranged at one side of the support frame (4) close to the bearing tool (5); the mounting frame (19) is adaptively arranged on the lifting slide rail (18); The lifting motor (17) is fixedly arranged at the top of the supporting frame (4) and used for driving the mounting frame (19) to slide along the lifting sliding rail (18) in a lifting manner; The mounting plate (20) is fixedly arranged at the lower end of the supporting frame (4); Wherein, two upper slide plate (21) and two-way drive unit all install in the lower terminal surface of mounting panel (20).
  7. 7. The precision measurement equipment for the inner and outer diameters of a ring gear according to claim 6, further comprising: the screw transmission mechanism (23) is arranged on the upper end surface of the workbench (1) along the front-back direction, and the supporting frame (4) is fixed on a driving sliding block of the screw transmission mechanism (23); The two front and rear sliding rails (24) are respectively fixed on the upper end face of the workbench (1) along the front and rear directions and are positioned on the left side and the right side of the screw transmission mechanism (23), and the support frame (4) is in sliding fit with the two front and rear sliding rails (24); The screw transmission mechanism (23) drives the driving slide blocks to move, and drives the supporting frame (4) to slide along the two front and rear sliding rails (24), so that the inner diameter detection mechanism is positioned right above the bearing tool (5) or right above the bearing tool (5).
  8. 8. The precision measurement equipment for the inner and outer diameters of a ring gear according to claim 7, further comprising: The protection cover (2) is buckled on the upper end face of the workbench (1), a workpiece detection port is formed in the front side of the upper end face of the protection cover (2), an equipment displacement port is formed in the rear side of the upper end face of the protection cover (2), the support frame (4) longitudinally penetrates through the equipment displacement port, two telescopic cover plates (3) are arranged in the equipment displacement port, and the two telescopic cover plates (3) are respectively shielded on the front side and the rear side of the support frame (4); When the support frame (4) slides forwards and backwards, the two telescopic cover plates (3) are matched to stretch out and draw back so as to cover the equipment displacement opening.
  9. 9. The precise measurement device for the inner and outer diameters of the gear ring according to claim 6, further comprising two upper traverse slide rails (25) respectively provided on the lower end surface of the mounting plate (20) and spaced in parallel front and rear, the two upper slide plates (21) sliding on the left and right sides of the two upper traverse slide rails (25) respectively; Wherein the bi-directional driving unit includes: The two toothed plates (26) are respectively and transversely arranged on the upper end surfaces of the two upper sliding plates (21) in a one-to-one correspondence manner and are positioned on opposite sides of the two upper sliding plates; The first driving motor is longitudinally arranged on the mounting plate (20), a driving gear (22) is arranged at the driving end of the lower part of the first driving motor, and the driving gear (22) is respectively meshed with the two toothed plates (26) so as to synchronously drive the two upper sliding plates (21) to be relatively close to or far away from each other.
  10. 10. The precision measurement equipment for the inner and outer diameters of a ring gear according to claim 6, further comprising: two pressing-down driving members (28) longitudinally fixed to the lower end surfaces of the mounting plates (20) and respectively located on the front sides and the rear sides of the two upper sliding plates (21); The two pressing execution pieces are respectively and correspondingly arranged at the driving ends of the lower parts of the two pressing driving pieces (28); The two pressing driving pieces (28) drive the two pressing executing pieces to move downwards and are used for being pressed on the top of the gear ring (27) to be tested.
  11. 11. The precision measurement equipment for the inner and outer diameters of a ring gear according to claim 10, wherein said pressing-down actuator comprises: The extension plate (29) is horizontally fixed at the driving end of the pressing driving piece (28), and one end of the inner side of the extension plate (29) is bent downwards to form a bending vertical plate; and the pressing wheel (30) is rotatably arranged on the inner side wall of the bending vertical plate, and the axis of the pressing wheel is perpendicular to the inner side wall of the bending vertical plate.
  12. 12. A precision measuring apparatus for the inner and outer diameters of a ring gear as set forth in claim 1, further comprising: The two upper fixing blocks (31) are correspondingly fixed on the lower end surfaces of the two upper sliding plates (21), the displacement sensors (32) are correspondingly penetrated and horizontally arranged on the two upper fixing blocks (31), and the induction ends of the two displacement sensors (32) are oppositely arranged; The two displacement induction frames are arranged on the lower end surfaces of the two upper sliding plates (21) in a one-to-one correspondence manner, are respectively positioned on the inner sides of the two upper fixing blocks (31), and the two probes (41) are arranged on the lower ends of the two displacement induction frames in a one-to-one correspondence manner; When the probe (41) contacts the inner wall of the gear ring (27) to be detected, the displacement sensing frame deforms to trigger the corresponding displacement sensor (32) for detecting the inner diameter of the gear ring (27) to be detected.
  13. 13. The precision measurement equipment for the inner and outer diameters of a ring gear according to claim 12, wherein said displacement sensing frame comprises: Two displacement vertical plates (33) which are longitudinally arranged at intervals in parallel and are positioned below the upper sliding plate (21); A displacement transverse plate (34) transversely arranged below the two displacement vertical plates (33), and the probe (41) is vertically fixed on the lower end surface of the displacement transverse plate (34); the trigger plate (35) is vertically fixed on the upper end face of the displacement transverse plate (34), and the sensing end of the displacement sensor (32) is abutted against the outer side wall of the trigger plate (35); And deformation elastic sheets (36) are respectively connected between the displacement vertical plate (33) and the upper sliding plate (21) and between the displacement vertical plate (33) and the displacement transverse plate (34), so that the displacement vertical plate (33) and the upper sliding plate (21), the displacement vertical plate (33) and the displacement transverse plate (34) can relatively displace.
  14. 14. A precision measuring apparatus for the inner and outer diameters of a ring gear as set forth in claim 1, further comprising: A strip plate (39) horizontally fixed to the lower end surface of one of the upper slide plates (21) and extending to below the other upper slide plate (21), the strip plate (39) being located at the front side edge or the rear side edge of the upper slide plate (21); a grating ruler (37) fixed along the length direction of the strip-shaped plate (39) and positioned on one side wall facing the middle part of the upper sliding plate (21); and a grating reading head (38) fixed on the lower end surface of the other upper sliding plate (21) and arranged opposite to the grating ruler (37) for detecting the moving distance of the two upper sliding plates (21) by reading the grating ruler (37).

Description

Precise measurement equipment for inner and outer diameters of gear ring Technical Field The invention belongs to the technical field of measurement, and particularly relates to precise measurement equipment for the inner diameter and the outer diameter of a gear ring. Background The gear ring is used as a core basic part in a mechanical transmission system, is widely applied to various high-end manufacturing fields such as automobiles, aerospace, precision machine tools, industrial robots and the like, and the precision degree of the inner diameter and the outer diameter of the gear ring directly determines the assembly precision of the gear ring and a matched part, so that the operation stability, the transmission efficiency, the noise level and the service life of the whole transmission system are influenced. Therefore, in the gear ring production process, the precise detection of the inner diameter and the outer diameter is a key link for guaranteeing the product quality. At present, most of measuring equipment for the inner diameter and the outer diameter of a gear ring in industrial production has the problem of separately measuring the inner diameter and the outer diameter, and detection of the inner diameter and the outer diameter of the gear ring is needed to be completed by means of different measuring tools or equipment, so that equipment investment cost and operation flow complexity are increased, and additional measuring errors are introduced due to inconsistent positioning references of the gear ring in the two measuring processes, so that correlation of inner diameter and outer diameter measuring data is poor. Disclosure of Invention The invention aims to provide precise measurement equipment for the inner diameter and the outer diameter of a gear ring, and aims to solve the problems that the existing gear ring measurement equipment needs to separately measure the inner diameter and the outer diameter, has high detection cost and complex flow, is easy to introduce measurement errors due to inconsistent positioning references, and has poor relevance of measurement data of the inner diameter and the outer diameter. In order to achieve the purpose, the technical scheme adopted by the invention is that the precision measurement equipment for the inner diameter and the outer diameter of the gear ring comprises: A work table; The positioning mechanism comprises a bearing tool, two clamping parts and a rotating disk, wherein the bearing tool is fixed on the upper end face of the workbench and is used for placing a gear ring to be tested, the two clamping parts are respectively arranged on the left side and the right side of the bearing tool and are used for clamping on the two sides of the gear ring to be tested, and the rotating disk is arranged on the workbench and rotates around the axial direction and is abutted against the outer wall of the gear ring to be tested so as to drive the gear ring to be tested to rotate; The outer diameter detection mechanism comprises two lower fixing blocks and two contact type telescopic measuring instruments, wherein the two lower fixing blocks are symmetrically arranged on the left side and the right side of the bearing tool, the two contact type telescopic measuring instruments are respectively arranged on the two lower fixing blocks, the two contact type telescopic measuring instruments are coaxial and perpendicular to the axial direction of the gear ring to be detected, and the two detection ends of the two contact type telescopic measuring instruments are propped against the outer wall of the gear ring to be detected in a rotating state by virtue of the telescopic characteristic of the two contact type telescopic measuring instruments so as to measure the outer diameter or roundness of the gear ring to be detected; The inner diameter detection mechanism comprises a supporting frame, two upper sliding plates, a bidirectional driving unit and two displacement sensors, wherein the supporting frame is fixed on the upper end face of the workbench, the two upper sliding plates are symmetrically arranged on the left side and the right side of the supporting frame, the two displacement sensors are respectively arranged on the two upper sliding plates, the upper sliding plates are provided with downward extending probes, the lower parts of the two probes are inserted into an inner hole of a gear ring to be detected, the bidirectional driving unit synchronously drives the two upper sliding plates to be relatively far away, and the lower parts of the two probes are driven to be propped against the inner wall of the gear ring to be detected so as to measure the inner diameter or roundness of the gear ring to be detected in a rotating state through the two displacement sensors. In one possible implementation, the method further includes: The two lower transverse sliding rails are respectively arranged on the left side and the right side of the bearing tool and the upper