A device for measuring eccentricity

Abstract

The invention discloses a device for measuring eccentricity, comprising a base, an L-shaped support plate, a mounting seat and a measuring mechanism; the L-shaped support plate is mounted on the base, and a hanging plate is magnetically connected to the top of the mounting seat; the measuring mechanism comprises a base, an L-shaped support rod, a horizontal support rod and a lever dial indicator; the L-shaped support rod comprises a round horizontal rod and a square longitudinal rod, the round horizontal rod is rotatably connected to the support, and the round horizontal rod is provided with an adjustment mechanism for adjusting the height of the round horizontal rod end; a sliding mounting block is provided on the square longitudinal rod, and a rack is provided on one side of the square longitudinal rod near the square cavity; one end of the rotating shaft in the square cavity is threadedly connected to the circular through hole of the square cavity, and the end is extended out of the mounting cavity and connected to a rotating knob; a fixed sleeve on the rotating shaft is provided with a gear meshing with the rack of the square longitudinal rod; a side of the mounting block far from the L-shaped support plate is threadedly connected with a horizontal nut, a thread is provided on the horizontal support rod, and a lever dial indicator is installed on one end of the horizontal support rod near the L-shaped support plate. The invention is easy to operate and has higher accuracy when measuring eccentricity.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a device for measuring eccentricity. Background Art

[0002] The function of a one-way clutch is to make a certain component rotate only in a certain direction and lock it in the other direction. One-way clutches can be divided into two types: roller one-way clutch and wedge one-way clutch. Generally speaking, the former is more commonly used. In the roller one-way clutch, two openings that are symmetrical relative to the center of the circle are opened on the ring of the fixed roller and the planetary gear. The eccentricity of these two openings needs to be within a certain range to avoid failure to lock. For the measurement of the eccentricity of the opening of the above ring, because the outer periphery of the ring is a smooth circle, it is very inconvenient to use traditional tooth measurement and the accuracy is not high. Therefore, it is necessary to provide an eccentricity measuring device that is easy to operate and has higher accuracy to solve the above problems. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a device for measuring eccentricity, which is easy to operate and has higher accuracy.

[0004] The present invention provides a device for measuring eccentricity, comprising a base, an L-shaped backing plate, a mounting seat and a measuring mechanism;

[0005] The L-shaped support plate is vertically mounted on one end of the upper surface of the base, and the L-shaped support plate has a pressing surface. The mounting seat and the measuring mechanism are placed on the side of the base facing the pressing surface. The top of the mounting seat is magnetically connected with a hanging plate, and the hanging plate is matched with the opening gap of the ring; the measuring mechanism includes a base, an L-shaped support rod, a horizontal support rod and a lever dial indicator; a support is provided on the upper surface of the base, and the support is used to install the L-shaped support rod, and the L-shaped support rod includes a round horizontal rod and a square longitudinal rod, and the round horizontal rod is rotatably connected to the support, and an adjustment mechanism is provided at one end of the longitudinal rod far from the round horizontal rod, and the adjustment mechanism is used to adjust the height of the end of the round horizontal rod;

[0006] The square longitudinal rod is provided with a mounting block, and the mounting block is provided with a square cavity and a circular mounting through hole in the horizontal direction. The mounting block is provided with a square through hole that penetrates the square cavity vertically, and a circular through hole is provided on one side wall of the square cavity. The square longitudinal rod slides in cooperation with the square through hole, and a rack is provided on a side of the square longitudinal rod near the square cavity; a rotating shaft is provided on the inner wall of the square cavity, one end of the rotating shaft is threadedly connected with the circular through hole of the square cavity, and the rotating shaft extends out of the mounting cavity and is connected with a rotating knob; a fixed sleeve on the rotating shaft is provided with a gear, and the gear is located in the square cavity, and the gear is meshed with the rack of the square longitudinal rod; a side surface of the mounting block far from the L-shaped support plate is threadedly connected with a cross nut, and the cross nut is coaxial with the circular mounting through hole and the center line, and a thread is provided on the cross support rod, and the cross support rod is threadedly connected to the circular mounting through hole and the cross nut, and the lever dial indicator is installed at one end of the cross support rod near the L-shaped support plate, and the measuring head of the lever dial indicator points to the pressing surface.

[0007] By setting a base, an L-shaped support plate, a mounting seat and a measuring mechanism, the L-shaped support plate is vertically mounted on one end of the upper surface of the base, and the mounting seat and the measuring mechanism are placed on the side of the base facing the pressing surface. The top of the mounting seat is magnetically connected with a hanging plate, and the hanging plate and the opening gap of the ring are matched. During measurement, the hanging plate is inserted into the two openings of the ring, and then the mounting seat and the ring are pushed toward the L-shaped support plate as a whole, so that the ring is fixed under the action of the hanging plate and the L-shaped support plate, and at the same time, the ring is fit with the L-shaped support plate through the extrusion of the smooth surface of the L-shaped support plate. Then move the measuring mechanism to fit the measuring head of the lever dial indicator with the position below the highest point of the outer circumference on the upper side of the ring. In this process, the knob is rotated, the gear rotates, and the mounting block moves up and down along the rack of the square longitudinal rod under the action of the mutual meshing of the gear and the rack of the square longitudinal rod; the cross nut is turned, and the cross support rod moves away from or close to the pressing surface under the action of the cross nut. Thus, by adjusting the rotating knob and the horizontal nut, the height of the lever dial indicator and the distance between the lever dial indicator and the L-shaped support plate can be adjusted. At the same time, the angle of the L-shaped support rod can be adjusted by the adjustment mechanism, so that the measuring head of the lever dial indicator fits the ring more accurately. Then the measuring mechanism is moved parallel to the upper surface of the base, so that the measuring head moves along the outer circumference of the ring, during which the maximum reading is read. The ring after measuring one side is fitted against the pressing surface and rotated 180° around the axial center line, and then the hanging plate is inserted into the two openings of the ring. Repeat the above process to measure the maximum value on the other side of the ring. Subtract the two measured values ​​to obtain the eccentricity of the ring opening, which is easy to operate and has higher accuracy.

[0008] Preferably, a dovetail groove is provided on the upper surface of the base, the direction of the dovetail groove is perpendicular to the pressing surface, and a dovetail block is provided on the lower surface of the mounting seat, and the dovetail block is slidably matched with the dovetail groove.

[0009] By arranging the dovetail block and the dovetail groove, the mounting seat can slide along the dovetail groove, so that the mounting seat can press against the seat ring more reliably.

[0010] Preferably, the adjusting mechanism comprises a shell, a wedge block, a wire lever, a threaded sleeve and a push rod; a mounting hole is provided on the base, the shell is mounted in the mounting hole, the interior of the shell is a cavity, the side wall of the cavity near the circular cross bar is provided with a through hole, one end of the circular cross bar passes through the through hole and extends into the shell; the cross section of the wedge block is a right-angled trapezoid, the straight waist surface of the wedge block is slidably connected to the bottom wall of the cavity, the top end of the push rod is fixedly connected to the circular cross bar, the bottom end shape of the push rod matches the inclined waist surface of the wedge block, and the bottom end of the push rod is slidably connected to the wedge block; a circular hole is provided on the side wall of the cavity, one end of the wire lever is fixedly connected to a bottom edge of the wedge block, the other end of the wire lever passes through the circular hole and extends out of the shell, and the part of the wire lever extending out of the shell is threadedly connected to the threaded sleeve; a first spring is provided on the top wall in the shell, and one end of the first spring far from the top wall is connected to the circular cross bar.

[0011] By setting the adjustment mechanism as a shell, a wedge block, a threaded lever, a threaded sleeve and a push rod, the threaded sleeve is rotated, the threaded lever moves under the action of the threaded sleeve, and drives the movement of the wedge block, the inclined waist surface of the wedge block pushes the push rod to move upward or downward, thereby fine-tuning the height of the end of the round cross bar to achieve the adjustment of the angle of the L-shaped support rod, so as to make the measuring head of the lever percentage fit better with the ring.

[0012] Preferably, a dovetail groove is provided on the upper surface of the bottom wall of the cavity, a dovetail block is provided on the straight waist surface of the wedge block, and the dovetail block of the wedge block is slidably matched with the dovetail groove of the bottom wall.

[0013] By arranging a dovetail groove on the upper surface of the bottom wall of the cavity and arranging a dovetail block on the straight waist surface of the wedge block, the wedge block is positioned and the movement direction of the wedge block is guided.

[0014] Preferably, the L-shaped supporting plate is provided with an L-shaped installation cavity, the L-shaped installation cavity comprises a vertical cavity and a horizontal cavity which are interconnected, a pre-positioning assembly is provided in the L-shaped installation cavity, the pre-positioning assembly comprises a support rod, a guide sleeve, a compression spring, a connecting rod, a rotating plate and a control mechanism; the rotating plate is hinged to the inner wall of the horizontal cavity, one end of the upper surface of the rotating plate is hinged to the bottom of the connecting rod, and the other end of the upper surface of the rotating plate is connected to the control mechanism, and the control mechanism is used to control the rotation of the rotating plate; a vertical strip through hole is provided on the side wall of the L-shaped installation cavity near the pressure surface, and the shape of the support rod is in the shape of a "7", The supporting rod comprises a transverse supporting rod and a vertical rod, the transverse supporting rod slidingly cooperates with the strip through hole and the transverse supporting rod extends beyond the pressing surface, the length of the transverse supporting rod extending beyond the pressing surface is less than the height of the ring; the guide sleeve is fixedly connected to the inner wall of the vertical cavity, the guide sleeve is provided with a through hole along the vertical direction, the vertical rod slidingly cooperates with the through hole of the guide sleeve, an annular block is provided at the bottom of the vertical rod, the bottom surface of the annular block contacts the top of the connecting rod, the top surface of the annular block is fixedly connected to the vertical rod, the compression spring is arranged outside the vertical rod, one end of the compression spring abuts against the guide sleeve, and the other end of the compression spring abuts against the top surface of the annular block.

[0015] By setting a pre-positioning component, when the control mechanism acts on one end of the rotating plate, the end of the rotating plate installed with the connecting rod rotates upward, so that the connecting rod pushes the supporting rod to slide upward along the guide sleeve, and the cross support rod of the supporting rod moves upward along the strip through hole to reach the pre-positioned height; at this time, the ring can be hung on the cross support rod for pre-fixation, and then the mounting seat is pushed toward the pressing surface, and the hanging plate is inserted into the two openings of the ring, and then the control mechanism is operated to release the effect of the control mechanism on the rotating plate. Under the action of the compression spring, the rotating plate returns to a horizontal state, and the cross support rod moves downward along the strip through hole, canceling the support of the cross support rod on the ring. Since the length of the cross support rod beyond the pressing surface is less than the height of the ring, the cross support rod will not affect the measurement of the eccentricity of the ring opening.

[0016] Preferably, the control mechanism includes an ascending switch, a descending switch, a card plate and a second spring; the card plate is installed in the transverse cavity, the card plate is in the shape of a flat rectangular parallelepiped, the slender surface of the card plate is the bottom, the card plate is located at one end of the rotating plate far from the connecting rod and the card plate is perpendicular to the rotating plate; the bottom of the card plate is provided with a strip groove along the length direction, the bottom of the transverse cavity is provided with a strip protrusion, the strip protrusion is slidably matched with the strip groove, and the two ends of the second spring are respectively connected to the inner wall of the transverse cavity and the side of the card plate; the upper part of the card plate is provided with a first card slot and a second card slot with a top opening, and a limit block with a right-angled trapezoidal cross-section is provided on the side of the first card slot near the second spring, the inclined waist surface of the limit block faces upward, and the straight waist surface of the limit block is aligned with the first card slot. A limit groove is formed on the bottom and the side, the side of the second slot close to the first slot is an inclined surface, and the opening of the second slot gradually decreases from top to bottom; the rising switch includes a button, a connecting rod and a third spring, the top of the transverse cavity is provided with a through hole for installing the connecting rod, the connecting rod is slidably matched with the through hole at the top of the transverse cavity, the top of the connecting rod is connected with the button, the bottom of the connecting rod is in contact with the rotating plate, the third spring is sleeved outside the connecting rod, and the two ends of the third spring are respectively against the button and the L-shaped support plate; a card block is provided on the lower side of the connecting rod, the card block is located above the first card slot, and the card block is matched with the limit groove; the structure of the descending switch is the same as that of the ascending switch, and the card block of the descending switch is located above the second card slot.

[0017] By setting an ascending switch, a descending switch and a card plate, when the horizontal support rod needs to ascend, the button of the ascending switch is pressed downward, the connecting rod moves downward with the card block, the connecting rod acts on the rotating plate, the rotating plate rotates, the card block squeezes the inclined waist surface of the first card slot and moves downward, when the card block reaches the limiting groove at the bottom, under the action of the second spring, the card block is clamped into the limiting groove, when the rotating angle of the rotating plate is positioned, the horizontal support rod reaches the predetermined height, and under the action of the limiting groove, the position of the horizontal support rod is fixed. When the horizontal support rod needs to descend, the button of the descending switch is pressed downward, because the side of the second card slot near the first card slot is an inclined surface, and the opening of the second card slot gradually decreases from top to bottom, under the action of the card block of the descending switch, the card plate is squeezed to the side of the second spring, the ascending switch withdraws from the first card slot under the action of its third spring, the rotating plate returns to a horizontal state, and the support of the ring by the horizontal support rod is cancelled.

[0018] Preferably, the distance between the hinge axis of the rotating plate and the connecting rod is greater than the distance between the hinge axis and the connecting rod; a fourth spring and a fifth spring are fixedly provided on the lower surface of the rotating plate, and the fourth spring and the fifth spring are both fixedly connected to the bottom of the transverse cavity, and the fourth spring and the fifth spring are respectively located on both sides of the hinge axis.

[0019] By setting the distance between the hinge axis of the rotating plate and the connecting rod to be greater than the distance between the hinge axis and the connecting rod, the lever principle is used so that when the rising switch or the falling switch moves a small distance, the cross support rod can move a large distance. At the same time, the fourth spring and the fifth spring play a role in regulating the balance of the rotating plate.

[0020] Preferably, a magnet is provided on the upper surface of the mounting seat, and the hanging plate is made of ferromagnetic material.

[0021] By arranging a magnet on the upper surface of the mounting seat and the material of the hanging plate is a ferromagnetic material, the hanging plate can be adsorbed on the upper surface of the mounting seat due to magnetism.

[0022] Preferably, a sixth spring and a seventh spring are provided on the circular cross bar of the L-shaped support rod, and the sixth spring and the seventh spring are symmetrically arranged on both sides of the support, one end of the sixth spring and the seventh spring are respectively connected to the circular cross bar, and the other end of the sixth spring and the seventh spring are respectively connected to the upper surface of the base.

[0023] The sixth spring and the seventh spring are arranged on the round cross bar of the L-shaped support rod to support the round cross bar.

[0024] Preferably, an annular groove is provided at one end of the mounting block near the transverse nut, the diameter of the annular groove is larger than the outer diameter of the transverse nut, and an annular protrusion is provided at one end of the transverse nut near the mounting block, and the annular protrusion is rotatably matched with the annular groove.

[0025] By setting an annular protrusion and an annular groove, the annular protrusion rotates in cooperation with the annular groove, and the annular protrusion is used to limit the cross nut, which not only ensures the rotation of the cross nut relative to the mounting block, but also ensures that the rotation of the cross nut can drive the rotation of the lead screw.

[0026] The beneficial effects of the present invention are embodied in:

[0027] 1. By setting a base, an L-shaped support plate, a mounting seat and a measuring mechanism, the L-shaped support plate is vertically mounted on one end of the upper surface of the base, and the mounting seat and the measuring mechanism are placed on the side of the base facing the pressing surface. The top of the mounting seat is magnetically connected with a hanging plate, and the hanging plate and the opening clearance of the ring are matched. During measurement, the hanging plate is inserted into the two openings of the ring, and then the mounting seat and the ring are pushed toward the L-shaped support plate as a whole, so that the ring is fixed under the action of the hanging plate and the L-shaped support plate, and at the same time, the ring is fit with the L-shaped support plate through the extrusion of the smooth surface of the L-shaped support plate. Then move the measuring mechanism to fit the measuring head of the lever dial indicator with the position below the highest point of the outer circumference on the upper side of the ring. In this process, the knob is rotated, the gear rotates, and the mounting block moves up and down along the rack of the square longitudinal rod under the action of the mutual meshing of the gear and the rack of the square longitudinal rod; the cross nut is turned, and the cross support rod moves away from or close to the pressing surface under the action of the cross nut. Thus, by adjusting the rotating knob and the horizontal nut, the height of the lever dial indicator and the distance between the lever dial indicator and the L-shaped support plate can be adjusted. At the same time, the angle of the L-shaped support rod can be adjusted by the adjustment mechanism, so that the measuring head of the lever dial indicator fits the ring more accurately. Then the measuring mechanism is moved parallel to the upper surface of the base, so that the measuring head moves along the outer circumference of the ring, during which the maximum reading is read. The ring after measuring one side is fitted against the pressing surface and rotated 180° around the axial center line, and then the hanging plate is inserted into the two openings of the ring. Repeat the above process to measure the maximum value on the other side of the ring. Subtract the two measured values ​​to obtain the eccentricity of the ring opening, which is easy to operate and has higher accuracy.

[0028] 2. By setting a pre-positioning component, when the control mechanism acts on one end of the rotating plate, the end of the rotating plate installed with the connecting rod rotates upward, so that the connecting rod pushes the supporting rod to slide upward along the guide sleeve, and the cross support rod of the supporting rod moves upward along the strip through hole to reach the pre-positioned height; at this time, the ring can be hung on the cross support rod for pre-fixation, and then the mounting seat is pushed toward the pressing surface, and the hanging plate is inserted into the two openings of the ring, and then the control mechanism is operated to release the effect of the control mechanism on the rotating plate. Under the action of the compression spring, the rotating plate returns to a horizontal state, and the cross support rod moves downward along the strip through hole, canceling the support of the cross support rod on the ring. Since the length of the cross support rod beyond the pressing surface is less than the height of the ring, the cross support rod will not affect the measurement of the eccentricity of the ring opening.

[0029] 3. By setting the rising switch, the falling switch and the card plate, when the horizontal support rod needs to rise, the button of the rising switch is pressed downward, the connecting rod moves downward with the card block, the connecting rod acts on the rotating plate, the rotating plate rotates, the card block squeezes the inclined waist surface of the first card slot and moves downward, when the card block reaches the limit slot at the bottom, under the action of the second spring, the card block is inserted into the limit slot, when the rotating angle of the rotating plate is positioned, the horizontal support rod reaches the predetermined height, and under the action of the limit slot, the position of the horizontal support rod is fixed. When the horizontal support rod needs to be lowered, the button of the falling switch is pressed downward, because the side of the second card slot near the first card slot is an inclined surface, and the opening of the second card slot gradually decreases from top to bottom, under the action of the card block of the falling switch, the card plate is squeezed to the side of the second spring, the rising switch withdraws from the first card slot under the action of its third spring, the rotating plate returns to a horizontal state, and the support of the ring by the horizontal support rod is cancelled. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a front view schematic diagram of the present invention;

[0032] Figure 3 It is a top view schematic diagram of the present invention;

[0033] Figure 4 It is a partially enlarged schematic diagram of the cross section of the measuring mechanism of the present invention in the direction of A;

[0034] Figure 5 It is a schematic diagram of a part C enlarged according to the present invention;

[0035] Figure 6 It is a partially enlarged schematic diagram of the cross section of the adjustment mechanism of the present invention in the direction of B;

[0036] Figure 7 It is a partial enlarged schematic diagram of the D direction of the present invention;

[0037] Figure 8 It is a partial enlarged schematic diagram of the cross section viewed in the direction of E of the present invention;

[0038] Fig. 9 It is a partial enlarged schematic diagram of the F-direction cross-section of the pre-positioning assembly of the present invention;

[0039] Fig.10 It is a partial enlarged schematic diagram of the G-direction cross-section of the pre-positioning component of the present invention.

[0040] Figure numerals: 1-base, 2-L-shaped support plate, 21-pressing surface, 3-mounting seat, 31-hanging plate, 4-measuring mechanism, 41-base, 411-support, 42-L-shaped support rod, 421-round cross rod, 4211-sixth spring, 4212-seventh spring, 422-square longitudinal rod, 4221-rack, 423-mounting block, 4231-rotating shaft, 4232-rotating knob, 4233-gear, 4234-cross nut, 4235-annular groove, 4236-annular protrusion, 43-cross support rod, 44-lever dial indicator, 45-adjusting mechanism, 451-housing, 452-wedge block, 453-wire lever, 45 4-threaded sleeve, 455-top rod, 456-first spring, 5-pre-positioning assembly, 51-support rod, 511-horizontal support rod, 512-vertical rod, 5121-annular block, 52-guide sleeve, 53-compression spring, 54-connecting rod, 55-turn plate, 551-fourth spring, 552-fifth spring, 56-control mechanism, 561-up switch, 5611-button, 5612-connecting rod, 5612a-block, 5613-third spring, 562-down switch, 563-card plate, 5631-first slot, 5631a-limit block, 5632-second slot, 564-second spring, 6-ring. DETAILED DESCRIPTION

[0041] The embodiments of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0042] like Figures 1 to 10As shown, the present invention provides a device for measuring eccentricity, comprising a base 1, an L-shaped support plate 2, a mounting seat 3 and a measuring mechanism 4; an L-shaped support plate 2 is vertically mounted on one end of the upper surface of the base 1, the L-shaped support plate 2 has a pressing surface 21, the mounting seat 3 and the measuring mechanism 4 are placed on the side of the base 1 close to the pressing surface 21, a hanging plate 31 is magnetically connected to the top of the mounting seat 3, and the hanging plate 31 is matched with the opening clearance of the ring 6; the measuring mechanism 4 comprises a base 41, an L-shaped support rod 42, a horizontal support rod 43 and a lever dial indicator 44; a support 411 is provided on the upper surface of the base 41, and the support 411 is used to install the L-shaped support rod 42, and the L-shaped support rod 42 includes a round cross bar 421 and a square longitudinal bar 422, and the round cross bar 421 is rotatably connected to the support 411, and an adjustment mechanism 45 is provided at one end of the round cross bar 421 far from the longitudinal bar 422, and the adjustment mechanism 45 is used to adjust the height of the end of the round cross bar 421; a mounting block 423 is provided on the square longitudinal bar 422, and a square cavity and a circular mounting through hole along the horizontal direction are opened on the mounting block 423 A square through hole penetrating the square cavity is vertically provided on the mounting block 423, a circular through hole is provided on one side wall of the square cavity, a square longitudinal rod 422 is slidably matched with the square through hole, and a rack 4221 is provided on one side of the square longitudinal rod 422 near the square cavity; a rotating shaft 4231 is provided on the inner wall of the square cavity, one end of the rotating shaft 4231 is threadedly connected with the circular through hole of the square cavity, and the rotating shaft 4231 extends out of the mounting cavity and is connected to a rotating knob 4232; a gear 4233 is fixedly sleeved on the rotating shaft 4231, and the gear 42 33 is located in the square cavity, and the gear 4233 is meshed with the rack 4221 of the square longitudinal rod 422; the side of the mounting block 423 far from the L-shaped support plate 2 is threadedly connected with a cross nut 4234, the cross nut 4234 is coaxial with the circular mounting through hole, and a thread is provided on the cross support rod 43, and the cross support rod 43 is threadedly connected with the circular mounting through hole and the cross nut 4234, and a lever dial indicator 44 is installed at one end of the cross support rod 43 near the L-shaped support plate 2, and the measuring head of the lever dial indicator 44 points to the pressing surface 21.

[0043] In this embodiment, by setting the base 1, L-shaped support plate 2, mounting seat 3 and measuring mechanism 4, one end of the upper surface of the base 1 is vertically mounted with the L-shaped support plate 2, the mounting seat 3 and the measuring mechanism 4 are placed on the side of the base 1 close to the pressing surface 21, and the top of the mounting seat 3 is magnetically connected with a hanging plate 31, and the hanging plate 31 is matched with the opening clearance of the ring 6. During measurement, the hanging plate 31 is inserted into the two openings of the ring 6, and then the mounting seat 3 and the ring 6 are pushed toward the L-shaped support plate 2 as a whole, so that the ring 6 is fixed under the action of the hanging plate 31 and the L-shaped support plate 2, and at the same time, the ring 6 is pressed by the L-shaped support plate 2 with a smooth surface, so that the L-shaped support plate 2 is fitted. Then move the measuring mechanism 4, and fit the measuring head of the lever dial indicator 44 with the position of the outer circumference of the upper side of the ring 6 below the highest point. During this process, the rotating knob 4232 is rotated, the gear 4233 rotates, and under the action of the mutual meshing of the gear 4233 and the rack 4221 of the square longitudinal rod 422, the mounting block 423 moves up and down along the rack 4221 of the square longitudinal rod 422; the horizontal nut 4234 is rotated, and the horizontal support rod 43 moves away from or close to the pressing surface 21 under the action of the horizontal nut 4234. Thus, by adjusting the rotating knob 4232 and the horizontal nut 4234, the height of the lever dial indicator 44 and the distance between the lever dial indicator 44 and the L-shaped support plate 2 can be adjusted. At the same time, the angle of the L-shaped support rod 42 can also be adjusted by the adjustment mechanism 45, so that the measuring head of the lever dial indicator 44 fits the ring 6 more accurately. Then the measuring mechanism 4 is moved parallel to the upper surface of the base 1, so that the measuring head moves along the outer periphery of the ring 6, and during this period, the maximum reading is read. The ring 6 after measuring one side is fitted against the pressing surface 21 and rotated 180° around the axial center line, and then the hanging plate 31 is inserted into the two openings of the ring 6. The above steps are repeated to measure the maximum value of the other side of the ring 6. The eccentricity of the opening of the ring 6 can be obtained by subtracting the two measured values, which is easy to operate and has higher accuracy.

[0044] A dovetail groove is provided on the upper surface of the base 1 , and the direction of the dovetail groove is perpendicular to the pressing surface 21 . A dovetail block is provided on the lower surface of the mounting seat 3 , and the dovetail block is slidably matched with the dovetail groove.

[0045] In this embodiment, by providing a dovetail block and a dovetail groove, the mounting seat 3 can slide along the dovetail groove, so that the mounting seat 3 can press against the seat ring more reliably.

[0046] The adjusting mechanism 45 comprises a housing 451, a wedge block 452, a threaded lever 453, a threaded sleeve 454 and a push rod 455; a mounting hole is provided on the base 41, and the housing 451 is installed in the mounting hole. The interior of the housing 451 is a cavity, and a through hole is provided on the side wall of the cavity near the round cross bar 421, and one end of the round cross bar 421 passes through the through hole and extends into the housing 451; the cross section of the wedge block 452 is a right-angled trapezoid, and the straight waist surface of the wedge block 452 is slidably connected to the bottom wall of the cavity, and the top end of the push rod 455 is fixedly connected to the round cross bar 421. 5 matches the oblique waist surface of the wedge block 452, and the bottom end of the push rod 455 is slidably connected to the wedge block 452; a circular hole is opened on the side wall of the cavity, one end of the wire lever 453 is fixedly connected to a bottom edge of the wedge block 452, and the other end of the wire lever 453 passes through the circular hole and extends out of the shell 451, and the part of the wire lever 453 extending out of the shell 451 is threadedly connected with the threaded sleeve 454; a first spring 456 is provided on the top wall inside the shell 451, and one end of the first spring 456 far from the top wall is connected to the round cross bar 421.

[0047] In this embodiment, by setting the adjustment mechanism 45 as a shell 451, a wedge block 452, a wire lever 453, a threaded sleeve 454 and a push rod 455, the threaded sleeve 454 is rotated, the wire lever 453 moves under the action of the threaded sleeve 454, and drives the movement of the wedge block 452, and the inclined waist surface of the wedge block 452 pushes the push rod 455 to move upward or downward, thereby fine-tuning the height of the end of the round cross bar 421 to achieve the adjustment of the angle of the L-shaped support rod 42, so as to make the measuring head of the lever percentage fit better with the ring 6.

[0048] A dovetail groove is provided on the upper surface of the bottom wall of the cavity, and a dovetail block is provided on the straight waist surface of the wedge block 452. The dovetail block of the wedge block 452 is slidably matched with the dovetail groove of the bottom wall.

[0049] In this embodiment, a dovetail groove is provided on the upper surface of the bottom wall of the cavity, and a dovetail block is provided on the straight waist surface of the wedge block 452, so that the wedge block 452 is positioned and the movement direction of the wedge block 452 is guided.

[0050] An L-shaped mounting cavity is provided on the L-shaped support plate 2, and the L-shaped mounting cavity includes a vertical cavity and a horizontal cavity that are interconnected. A pre-positioning assembly 5 is provided in the L-shaped mounting cavity, and the pre-positioning assembly 5 includes a support rod 51, a guide sleeve 52, a compression spring 53, a connecting rod 54, a rotating plate 55 and a control mechanism 56; the rotating plate 55 is hinged to the inner wall of the horizontal cavity, one end of the upper surface of the rotating plate 55 is hinged to the bottom of the connecting rod 54, and the other end of the upper surface of the rotating plate 55 is connected to the control mechanism 56, and the control mechanism 56 is used to control the rotation of the rotating plate 55; a vertical strip through hole is provided on the side wall of the L-shaped mounting cavity near the pressure surface 21, and the shape of the support rod 51 is "7", and the support rod 51 includes a horizontal support rod 511 and a vertical rod 5 12, the horizontal support rod 511 is slidably matched with the strip through hole and the horizontal support rod 511 extends beyond the pressing surface 21, and the length of the horizontal support rod 511 extending beyond the pressing surface 21 is less than the height of the ring 6; the guide sleeve 52 is fixedly connected to the inner wall of the vertical cavity, the guide sleeve 52 is provided with a through hole along the vertical direction, the vertical rod 512 is slidably matched with the through hole of the guide sleeve 52, and the bottom of the vertical rod 512 is provided with an annular block 5121, the bottom surface of the annular block 5121 contacts the top of the connecting rod 54, and the top surface of the annular block 5121 is fixedly connected to the vertical rod 512, and a compression spring 53 is arranged outside the vertical rod 512, one end of the compression spring 53 is against the guide sleeve 52, and the other end of the compression spring 53 is against the top surface of the annular block 5121.

[0051] In the present embodiment, by setting the pre-positioning assembly 5, when the control mechanism 56 acts on one end of the rotating plate 55, the end of the rotating plate 55 equipped with the connecting rod 54 rotates upward, so that the connecting rod 54 pushes the supporting rod 51 to slide upward along the guide sleeve 52, and the cross support rod 511 of the supporting rod 51 moves upward along the strip through hole to reach the pre-positioned height; at this time, the ring 6 can be hung on the cross support rod 511 for pre-fixation, and then the mounting seat 3 is pushed toward the pressing surface 21, and the hanging plate 31 is clamped into the two openings of the ring 6, and then the control mechanism 56 is operated to release the effect of the control mechanism 56 on the rotating plate 55, and under the action of the compression spring 53, the rotating plate 55 returns to the horizontal state, and the cross support rod 511 moves downward along the strip through hole, canceling the support of the cross support rod 511 to the ring 6. Since the length of the cross support rod 511 beyond the pressing surface 21 is less than the height of the ring 6, the cross support rod 511 will not affect the measurement of the eccentricity of the opening of the ring 6.

[0052] The control mechanism 56 includes an ascending switch 561, a descending switch 562, a card plate 563 and a second spring 564; the card plate 563 is installed in the transverse cavity, the card plate 563 is a flat rectangular parallelepiped, the elongated surface of the card plate 563 is the bottom, the card plate 563 is located at the end of the rotating plate 55 far from the connecting rod 54 and the card plate 563 is perpendicular to the rotating plate 55; the bottom of the card plate 563 is provided with a strip groove along the length direction, the bottom of the transverse cavity is provided with a strip convex block, and the strip convex block is slidably matched with the strip groove The two ends of the second spring 564 are connected to the inner wall of the transverse cavity and the side of the clamping plate 563 respectively; the upper part of the clamping plate 563 is provided with a first clamping groove 5631 and a second clamping groove 5632 with a top opening, and a limiting block 5631a with a right-angled trapezoidal cross-section is provided on one side of the first clamping groove 5631 near the second spring 564, the oblique waist surface of the limiting block 5631a faces upward, and the straight waist surface of the limiting block 5631a forms a limiting groove with the bottom and side of the first clamping groove 5631, and the second The side of the card slot 5632 near the first card slot 5631 is an inclined surface, and the opening of the second card slot 5632 gradually decreases from top to bottom; the rising switch 561 includes a button 5611, a connecting rod 5612 and a third spring 5613. A through hole for installing the connecting rod 5612 is opened at the top of the horizontal cavity. The connecting rod 5612 is slidably matched with the through hole at the top of the horizontal cavity. The top of the connecting rod 5612 is connected to the button 5611, and the bottom of the connecting rod 5612 contacts the rotating plate 55. The third spring 5613 is The spring 5613 is sleeved on the outside of the connecting rod 5612, and the two ends of the third spring 5613 are respectively against the button 5611 and the L-shaped support plate 2; a block 5612a is provided on the lower side of the connecting rod 5612, and the block 5612a is located above the first slot 5631, and the block 5612a cooperates with the limit slot; the structure of the descending switch 562 is the same as that of the ascending switch 561, and the block 5612a of the descending switch 562 is located above the second slot 5632.

[0053] In this embodiment, by setting an ascending switch 561, a descending switch 562 and a card plate 563, when the horizontal support rod 511 needs to ascend, the button 5611 of the ascending switch 561 is pressed downward, and the connecting rod 5612 moves downward with the card block 5612a. The connecting rod 5612 acts on the rotating plate 55 to rotate the rotating plate 55. The card block 5612a squeezes the inclined waist surface of the first card slot 5631 and moves downward. When the card block 5612a reaches the limiting groove at the bottom, under the action of the second spring 564, the card block 5612a is inserted into the limiting groove. When the rotation angle of the rotating plate 55 is positioned, the horizontal support rod 511 reaches the predetermined height, and under the action of the limiting groove, the position of the horizontal support rod 511 is fixed. When the horizontal support rod 511 needs to be lowered, the button 5611 of the descending switch 562 is pressed downward. Since the side of the second slot 5632 close to the first slot 5631 is an inclined surface, and the opening of the second slot 5632 gradually decreases from top to bottom, under the action of the block 5612a of the descending switch 562, the card plate 563 is squeezed toward the side of the second spring 564, and the ascending switch 561 is withdrawn from the first slot 5631 under the action of its third spring 5613, and the rotating plate 55 returns to a horizontal state, and the support of the ring 6 by the horizontal support rod 511 is cancelled.

[0054] The distance between the hinge axis of the rotating plate 55 and the connecting rod 54 is greater than the distance between the hinge axis and the connecting rod 5612; the fourth spring 551 and the fifth spring 552 are fixedly provided on the lower surface of the rotating plate 55, and the fourth spring 551 and the fifth spring 552 are both fixedly connected to the bottom of the transverse cavity, and the fourth spring 551 and the fifth spring 552 are respectively located on both sides of the hinge axis.

[0055] In this embodiment, by setting the distance between the hinge axis of the rotating plate 55 and the connecting rod 54 to be greater than the distance between the hinge axis and the connecting rod 5612, the lever principle is used so that when the rising switch 561 or the falling switch 562 moves a small distance, the horizontal support rod 511 can move a large distance. At the same time, the fourth spring 551 and the fifth spring 552 play a role in regulating the balance of the rotating plate 55.

[0056] A magnet is disposed on the upper surface of the mounting base 3 , and the hanging plate 31 is made of ferromagnetic material.

[0057] In this embodiment, a magnet is disposed on the upper surface of the mounting base 3 , and the material of the hanging plate 31 is a ferromagnetic material, so that the hanging plate 31 can be magnetically adsorbed on the upper surface of the mounting base 3 .

[0058] A sixth spring 4211 and a seventh spring 4212 are provided on the round cross bar 421 of the L-shaped support rod 42. The sixth spring 4211 and the seventh spring 4212 are symmetrically arranged on both sides of the support 411. One end of the sixth spring 4211 and the seventh spring 4212 are respectively connected to the round cross bar 421, and the other end of the sixth spring 4211 and the seventh spring 4212 are respectively connected to the upper surface of the base 41.

[0059] In this embodiment, a sixth spring 4211 and a seventh spring 4212 are provided on the round cross bar 421 of the L-shaped support rod 42 to support the round cross bar 421 .

[0060] An annular groove 4235 is provided at one end of the mounting block 423 near the transverse nut 4234 , and a diameter of the annular groove 4235 is larger than an outer diameter of the transverse nut 4234 . An annular protrusion 4236 is provided at one end of the transverse nut 4234 near the mounting block 423 , and the annular protrusion 4236 is rotatably engaged with the annular groove 4235 .

[0061] In this embodiment, an annular protrusion 4236 and an annular groove 4235 are provided, and the annular protrusion 4236 rotates in cooperation with the annular groove 4235. The annular protrusion 4236 is used to limit the cross nut 4234, which not only ensures the rotation of the cross nut 4234 relative to the mounting block 423, but also ensures that the rotation of the cross nut 4234 can drive the rotation of the screw.

[0062] It should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A device for measuring eccentricity, characterized in that: It includes a base, an L-shaped backing plate, a mounting seat and a measuring mechanism; The L-shaped support plate is vertically mounted on one end of the upper surface of the base, and the L-shaped support plate has a pressing surface. The mounting seat and the measuring mechanism are placed on the side of the base facing the pressing surface. The top of the mounting seat is magnetically connected with a hanging plate, and the hanging plate is matched with the opening gap of the ring; the measuring mechanism includes a base, an L-shaped support rod, a horizontal support rod and a lever dial indicator; a support is provided on the upper surface of the base, and the support is used to install the L-shaped support rod, and the L-shaped support rod includes a round horizontal rod and a square longitudinal rod, and the round horizontal rod is rotatably connected to the support, and an adjustment mechanism is provided at one end of the longitudinal rod far from the round horizontal rod, and the adjustment mechanism is used to adjust the height of the end of the round horizontal rod; The square longitudinal rod is provided with a mounting block, and the mounting block is provided with a square cavity and a circular mounting through hole along the horizontal direction, and the mounting block is provided with a square through hole that penetrates the square cavity vertically, and a circular through hole is provided on one side wall of the square cavity, the square longitudinal rod is slidably matched with the square through hole, and a rack is provided on a side of the square longitudinal rod near the square cavity; a rotating shaft is provided on the inner wall of the square cavity, one end of the rotating shaft is threadedly connected with the circular through hole of the square cavity, and the rotating shaft extends out of the mounting cavity and is connected with a rotating knob; a fixed sleeve on the rotating shaft is provided with a gear, and the gear is located in the square cavity, and the gear is meshed with the rack of the square longitudinal rod; the side surface of the mounting block far from the L-shaped support plate is threadedly connected with a cross nut, and the cross nut is coaxial with the circular mounting through hole. The cross support rod is provided with a thread, and the cross support rod is threadedly connected to the circular mounting through hole and the cross nut, and the lever dial indicator is installed at one end of the cross support rod near the L-shaped support plate, and the measuring head of the lever dial indicator points to the pressing surface; The adjusting mechanism comprises a shell, a wedge block, a wire lever, a threaded sleeve and a push rod; a mounting hole is provided on the base, the shell is installed in the mounting hole, the interior of the shell is a cavity, the side wall of the cavity near the circular cross rod is provided with a through hole, and one end of the circular cross rod passes through the through hole and extends into the shell; the cross section of the wedge block is a right-angled trapezoid, the straight waist surface of the wedge block is slidably connected to the bottom wall of the cavity, the top end of the push rod is fixedly connected to the circular cross rod, the bottom end shape of the push rod matches the inclined waist surface of the wedge block, and the bottom end of the push rod is slidably connected to the wedge block; a circular hole is opened on the side wall of the cavity, one end of the wire lever is fixedly connected to a bottom edge of the wedge block, the other end of the wire lever passes through the circular hole and extends out of the shell, and the part of the wire lever extending out of the shell is threadedly connected to the threaded sleeve; a first spring is provided on the top wall in the shell, and one end of the first spring far from the top wall is connected to the circular cross rod; The L-shaped support plate is provided with an L-shaped installation cavity, and the L-shaped installation cavity includes a vertical cavity and a horizontal cavity that are interconnected. A pre-positioning component is provided in the L-shaped installation cavity, and the pre-positioning component includes a support rod, a guide sleeve, a compression spring, a connecting rod, a rotating plate and a control mechanism; the rotating plate is hinged to the inner wall of the horizontal cavity, one end of the upper surface of the rotating plate is hinged to the bottom of the connecting rod, and the other end of the upper surface of the rotating plate is connected to the control mechanism, and the control mechanism is used to control the rotation of the rotating plate; a vertical strip through hole is provided on the side wall of the L-shaped installation cavity near the pressure surface, and the shape of the support rod is "7", and the support rod includes a horizontal support rod and a vertical rod. The guide sleeve is fixedly connected to the inner wall of the vertical cavity, and the guide sleeve is provided with a through hole in the vertical direction. The vertical rod is slidably matched with the through hole of the guide sleeve, and an annular block is provided at the bottom of the vertical rod. The bottom surface of the annular block contacts the top of the connecting rod, and the top surface of the annular block is fixedly connected to the vertical rod. The compression spring is arranged on the outer surface of the vertical rod, and one end of the compression spring abuts against the guide sleeve, and the other end of the compression spring abuts against the top surface of the annular block.

2. A device for measuring eccentricity according to claim 1, characterized in that: A dovetail groove is provided on the upper surface of the base, the direction of the dovetail groove is perpendicular to the pressing surface, and a dovetail block is provided on the lower surface of the mounting seat, and the dovetail block is slidably matched with the dovetail groove.

3. A device for measuring eccentricity according to claim 1, characterized in that: The upper surface of the bottom wall of the cavity is provided with a dovetail groove, and the straight waist surface of the wedge block is provided with a dovetail block, and the dovetail block of the wedge block is slidably matched with the dovetail groove of the bottom wall.

4. A device for measuring eccentricity according to claim 1, characterized in that: The control mechanism includes an ascending switch, a descending switch, a card plate and a second spring; the card plate is installed in the transverse cavity, the card plate is in the shape of a flat rectangular parallelepiped, the slender surface of the card plate is the bottom, the card plate is located at one end of the rotating plate far from the connecting rod and the card plate is perpendicular to the rotating plate; the bottom of the card plate is provided with a strip groove along the length direction, the bottom of the transverse cavity is provided with a strip protrusion, the strip protrusion is slidably matched with the strip groove, and the two ends of the second spring are respectively connected to the inner wall of the transverse cavity and the side of the card plate; the upper part of the card plate is provided with a first card slot and a second card slot with a top opening, and a limit block with a right-angled trapezoidal cross-section is provided on the side of the first card slot near the second spring, the inclined waist surface of the limit block faces upward, and the straight waist surface of the limit block is aligned with the bottom of the first card slot. and the side surfaces form a limiting groove, the side of the second slot close to the first slot is an inclined surface, and the opening of the second slot gradually decreases from top to bottom; the rising switch comprises a button, a connecting rod and a third spring, the top of the transverse cavity is provided with a through hole for installing the connecting rod, the connecting rod is slidably matched with the through hole at the top of the transverse cavity, the top of the connecting rod is connected with the button, the bottom of the connecting rod is in contact with the rotating plate, the third spring is sleeved outside the connecting rod, and the two ends of the third spring are respectively against the button and the L-shaped support plate; a card block is provided on the lower side of the connecting rod, the card block is located above the first card slot, and the card block is matched with the limiting groove; the structure of the descending switch is the same as that of the ascending switch, and the card block of the descending switch is located above the second card slot.

5. A device for measuring eccentricity as claimed in claim 4, characterized in that: The distance between the hinge axis of the rotating plate and the connecting rod is greater than the distance between the hinge axis and the connecting rod; a fourth spring and a fifth spring are fixedly provided on the lower surface of the rotating plate, and the fourth spring and the fifth spring are fixedly connected to the bottom of the transverse cavity, and the fourth spring and the fifth spring are respectively located on both sides of the hinge axis.

6. A device for measuring eccentricity according to claim 1, characterized in that: A magnet is disposed on the upper surface of the mounting seat, and the hanging plate is made of ferromagnetic material.

7. A device for measuring eccentricity according to claim 1, characterized in that: The circular cross bar of the L-shaped support rod is provided with a sixth spring and a seventh spring, and the sixth spring and the seventh spring are symmetrically arranged on both sides of the support, one end of the sixth spring and the seventh spring are respectively connected to the circular cross bar, and the other end of the sixth spring and the seventh spring are respectively connected to the upper surface of the base.

8. The device for measuring eccentricity according to claim 1, characterized in that: An annular groove is provided at one end of the mounting block near the transverse nut, the diameter of the annular groove is larger than the outer diameter of the transverse nut, and an annular protrusion is provided at one end of the transverse nut near the mounting block, and the annular protrusion is rotatably matched with the annular groove.

Images