CN209559171U - A brake drum inner hole detector - Google Patents

Abstract

The utility model relates to a brake drum inner hole detector, which comprises a workbench, a two-dimensional mobile slide, a positioning component, a lifting device, a cantilever, a rotating shaft sleeve, and a measuring component. The workbench is provided with a base for providing a reference One side of the base surface is provided with an upright support arm, the two-dimensional mobile sliding table is arranged on the base surface of the workbench, and positioning components for clamping and positioning the brake drum are arranged symmetrically on the two-dimensional mobile sliding table. The lifting device is installed on the supporting arm of the workbench. One end of the cantilever is installed on the lifting device, and the other end is provided with a through hole perpendicular to the base surface of the workbench. The openings at both ends of the through hole are equipped with plane thrust bearings. The plane thrust bearing is passed through the through hole of the cantilever, and the measuring component is installed on the rotating shaft sleeve. When the utility model measures the inner diameter and the roundness, the two axial section data of the inner hole can be directly obtained without rotation, and the measurement is fast, and the measurement accuracy and repeatability are high.

Description

A brake drum inner hole detector

technical field

The utility model relates to a measuring tool for mechanical processing, in particular to a brake drum inner hole detector.

Background technique

The quality of the inner hole of the brake drum is closely related to the effect of the brake device. The existing quality system requires a one-by-one inspection. The inspection content includes the diameter, roundness, cylindricity and surface finish of the inner hole. Among them, the inner hole roundness, At present, the detection of cylindricity is manual detection. The measuring instruments used are the internal diameter dial gauge and the special measuring frame. mass production requirements.

Contents of the invention

The purpose of this utility model is to propose a brake drum inner hole detector, through which the inner hole diameter, roundness and cylindricity detection can be realized, and the whole detection process only needs one clamping to complete, and the detection efficiency is high. The error is small, and the production efficiency can be greatly improved.

In order to achieve the above object, the utility model adopts the following technical solutions:

A brake drum inner hole detector, comprising a workbench, a two-dimensional mobile slide, a positioning component, a lifting device, a cantilever, a rotating sleeve, and a measuring component. The workbench is provided with a base surface for providing a reference, and the base surface One side is provided with an upright support arm, the two-dimensional mobile sliding table is arranged on the base surface of the workbench, and positioning components for clamping and positioning the brake drum are arranged symmetrically on the two-dimensional mobile sliding table, and the lifting device is installed on the On the support arm of the workbench, one end of the cantilever is installed on the lifting device, and the other end is provided with a through hole perpendicular to the base surface of the workbench. The openings at both ends of the through hole are equipped with plane thrust bearings, and the rotating shaft sleeve passes through the plane thrust bearing. Located in the through hole of the cantilever, the measuring component is installed on the rotating shaft sleeve; the measuring component includes a bracket, a sensor, a fixed sleeve, a protective sleeve, and a guide sleeve, wherein the upper end of the guide sleeve is fixedly connected with the lower end of the rotating sleeve, and fixed The lower end of the sleeve is fixedly connected with the upper end of the rotating shaft sleeve, the lower end of the protective sleeve is fixedly connected with the upper end of the fixed sleeve, the bracket is penetrated in the fixed sleeve and the rotating shaft sleeve, the upper part is fixedly connected with the fixed sleeve by bolts, and the lower part is also connected by bolts It is fixedly connected with the rotating shaft sleeve, the upper end of the bracket is located in the protective sleeve, the lower end is located in the guide sleeve, and the lower end of the bracket is provided with four sensors on the same plane, and the probe of each sensor passes through the side wall of the guide sleeve. The guide sleeve described above is a cylindrical structure with an axial hole inside. The lower end of the outer cylindrical surface is provided with a tapered surface for guiding.

The bracket includes a handle, a positioning block A, a connecting block A, a positioning block B, a connecting block B, a vertical bar A, a vertical bar B, a horizontal bar A, and a horizontal bar B. The positioning block A is a cuboid structure as a whole , the two ends of its long axis are provided with an arc surface that matches the inner hole of the fixed sleeve, and both sides of the middle of the arc surface are provided with connecting holes and are connected with the side wall of the fixed sleeve through bolts. The positioning block B as a whole It is a cuboid structure, and the two ends of its long axis are provided with arc surfaces that match the inner holes of the rotating bushing. Both sides of the middle of the arc surface are provided with connecting holes and are connected to the side walls of the rotating bushing through bolts. The lower end of the shank is fixedly connected with the upper end of the positioning block A, the upper end of the connecting block A is fixedly connected with the lower end of the positioning block A, the two sides of the lower end of the connecting block A are respectively provided with a vertical bar A, and the lower end of the vertical bar A is provided with a horizontal bar A , the end of each crossbar A is fixedly connected with a measuring mounting seat for installing the sensor through a connecting rod, the upper end of the connecting block B is fixedly connected with the lower end of the positioning block B, and the lower ends of the connecting block B are respectively provided with The vertical bar B, the lower end of the vertical bar B is provided with a horizontal bar B, the end of each horizontal bar B is provided with a vertical bar, and the end of each vertical bar is provided with a mounting hole for installing the sensor; the positioning block B is The middle part of the arc surface is provided with an opening slot axially penetrating the arc surface, and the width of the opening slot matches the width of the vertical rod A.

The positioning assembly includes a positioning seat, a V-shaped block and fastening bolts, the positioning seat is fixedly arranged on one side of the middle of the two-dimensional mobile slide table, the V-shaped block is arranged on one side of the positioning seat, and the axis of the V-shaped groove of the V-shaped block Perpendicular to the upper end surface of the two-dimensional mobile slide table, the fastening bolts threaded with the positioning seat pass through the two sides of the positioning seat and drive the V-shaped block to move on the upper end surface of the two-dimensional mobile slide table by rotating.

The lifting device includes a mounting seat, a parallel guide rail, a lifting plate, a screw nut pair and a hand wheel, the mounting seat is provided with the side of the support arm of the workbench, the parallel guide rail is installed in the mounting seat, and the parallel guide rail is provided with a sliding connection with the guide rail. Lifting plate, the lead screw is located between the parallel guide rails, the two ends of the lead screw are fixedly connected with the upper and lower ends of the mounting seat respectively, the lifting plate is fixedly connected with the nut connecting plate of the lead screw nut pair, and is used to drive the screw nut pair The handwheel is arranged on the upper end of the mounting seat, the handwheel is provided with a handwheel locking device, and the lifting plate is provided with a lifting locking device; the cantilever is fixedly connected with the nut connecting plate through the lifting plate.

A gas spring damping device is also arranged between the end of the lead screw and the mounting seat of the lifting device.

The sensors are all lever pressure sensors.

The use method of the utility model: firstly, the zero position is calibrated by measuring the accuracy calibration parts, and then the parts are placed on the two-dimensional mobile slide table, and the parts are clamped from the outer circles on both sides with V-shaped blocks, when the guide sleeve enters the part When drilling, use the automatic centering and alignment function of the two-dimensional mobile slide to realize the centering of the guide sleeve on the inner hole of the part, lock the slide, and then measure the inner hole of the brake drum to obtain the difference between the inner hole of the brake drum and the precision calibration part , calculate the difference value and the verification value of the accuracy calibration part to obtain the measured value of the inner hole of the brake drum.

The beneficial effects of the utility model are: the utility model can install four lever-type pressure sensors at the measuring position through the specially designed bracket and rotating device, and can directly obtain the inner hole's temperature without rotation when measuring the inner diameter and roundness. Two axial section data, when measuring cylindricity, can be completed by manually controlling the rise and fall of the probe; the combination of the guide sleeve and the two-dimensional mobile slide table solves the problem that the measurement of large diameter inner holes cannot guarantee the inner diameter of the probe and the workpiece. The hole concentricity problem realizes the automatic centering of the inner hole of the workpiece during measurement, eliminates the measurement error caused by the eccentricity problem, the measurement is fast, the measurement accuracy and repeatability are high, and it is suitable for piece-by-piece inspection in mass production.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a sectional view of the utility model.

Figure 3 is a schematic diagram of the bracket.

Figure 4 is a front view of the bracket.

Figure 5 is a top view of the bracket.

Figure 6 is a side view of the bracket.

In the figure, 1. Workbench, 2. Two-dimensional mobile slide table, 301, positioning seat, 302, V-shaped block, 303, fastening bolt, 401, mounting seat, 402, parallel guide rail, 403, lifting plate, 405, Lead screw nut pair, 406, hand wheel, 407, lifting locking device, 5, cantilever, 501, sensor, 502, fixed sleeve, 503, protective sleeve, 504, guide sleeve, 6, rotating shaft sleeve, 7, plane thrust Bearing, 8, brake drum, 901, handle, 902, positioning block A, 903, connecting block A, 904, positioning block B, 905, connecting block B, 906, vertical rod A, 907, vertical rod B, 908, Crossbar A, 909, crossbar B, 910, measuring mounting seat, 911, vertical pole.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A brake drum inner hole detector, including a workbench 1, a two-dimensional mobile slide 2, a positioning component, a lifting device, a cantilever 5, a rotating bushing 6, and a measuring component. The workbench 1 is provided with a The base surface, one side of the base surface is provided with an upright support arm 101, the two-dimensional mobile slide table 2 is arranged on the base surface of the workbench, and the two-dimensional mobile slide table 2 is symmetrically arranged to clamp the brake drum 8 The positioning assembly for positioning, the lifting device is installed on the support arm 101 of the workbench 1, one end of the cantilever 5 is installed on the lifting device, and the other end is provided with a through hole perpendicular to the base surface of the workbench, and the openings at both ends of the through hole are provided with The plane thrust bearing 7, the rotating shaft sleeve 6 passes through the plane thrust bearing 7 in the through hole of the cantilever, and the measuring assembly is installed on the rotating shaft sleeve 6; the measuring assembly includes a bracket, a sensor 501, a fixed sleeve 502, and a protective sleeve 503 , guide sleeve 504, wherein, the upper end of guide sleeve 504 is fixedly connected with the lower end of rotating shaft sleeve 6, the lower end of fixed sleeve 502 is fixedly connected with the upper end of rotating shaft sleeve 6, the lower end of protective sleeve 503 is fixedly connected with the upper end of fixed sleeve 502, The bracket is installed in the fixed sleeve 502 and the rotating shaft sleeve 6, its upper part is fixedly connected with the fixed sleeve 502 by bolts, and the lower part is fixedly connected with the rotating shaft sleeve 6 by bolts, the upper end of the bracket is located in the protective sleeve 503, and the lower end is located in the guide In the sleeve 504, four sensors 501 located on the same plane are arranged at the lower end of the bracket, and the probe of each sensor 501 passes through the side wall of the guide sleeve 504. The guide sleeve 504 is a cylindrical shape with an axial hole inside as a whole Structure, the lower end of the outer cylindrical surface is provided with a tapered surface for guiding, and the cone surface is equally divided into a circle with a through hole matching the probe.

The bracket includes a handle 901, a positioning block A902, a connecting block A903, a positioning block B904, a connecting block B905, a vertical bar A906, a vertical bar B907, a horizontal bar A908, and a horizontal bar B909. The positioning block A902 is a rectangular parallelepiped as a whole structure, the two ends of its long axis are provided with an arc surface that matches the inner hole of the fixed sleeve 502, and both sides of the middle of the arc surface are provided with connecting holes and are connected with the side wall of the fixed sleeve 502 by bolts. Block B904 is a cuboid structure as a whole, and the two ends of its long axis are provided with circular arc surfaces that match the inner holes of the rotating sleeve 6, and both sides of the middle of the arc surface are provided with connecting holes and are connected to the side walls of the rotating sleeve 6 through bolts. connected, the lower end of the handle 901 is fixedly connected with the upper end of the positioning block A902, the upper end of the connecting block A903 is fixedly connected with the lower end of the positioning block A902, and the lower end of the connecting block A903 is respectively provided with a vertical bar A906, and the lower end of the vertical bar A906 A crossbar A908 is provided, and the end of each crossbar A908 is fixedly connected with a measuring mounting seat 910 for installing a sensor through a connecting rod. The upper end of the connecting block B905 is fixedly connected with the lower end of the positioning block B904, and the connecting block B905 Both sides of the lower end of the vertical rod B907 are respectively provided with a horizontal bar B909 at the lower end of the vertical rod B907, and a vertical rod 911 is provided at the end of each horizontal rod B909. Mounting holes; the middle part of the circular arc surface of the positioning block B904 is provided with an opening slot axially penetrating the arc surface, and the width of the opening slot matches the width of the vertical bar A906.

The positioning assembly includes a positioning seat 301, a V-shaped block 302 and a fastening bolt 303. The positioning seat 301 is fixedly arranged on one side of the middle of the two-dimensional mobile slide table 2, and the V-shaped block 302 is arranged on one side of the positioning seat 301. The axis of the V-shaped groove of the type block 302 is perpendicular to the upper end surface of the two-dimensional mobile slide table 2, and the fastening bolt 303 threaded with the positioning seat 301 passes through the two sides of the positioning seat 301 and drives the V-shaped block 302 to move in two dimensions through rotation. The upper end surface of slide table 2 moves.

The lifting device includes a mounting base 401, a parallel guide rail 402, a lifting plate 403, a screw nut pair 405, and a hand wheel 406. The mounting base 401 is provided with the side of the workbench support arm 101, and the parallel guide rail 402 is installed in the mounting base 401. The guide rail 402 is provided with a lifting plate 403 slidingly connected with the guide rail. The lead screw is located between the parallel guide rails 402. The two ends of the lead screw are fixedly connected with the upper and lower ends of the mounting seat 401 respectively. The nut connecting plate is fixedly connected, and the handwheel 406 used to drive the screw nut pair 405 is arranged on the upper end of the mounting seat 401, the handwheel 406 is provided with a handwheel locking device, and the lifting plate 403 is provided with a lifting locking device 407; The cantilever 5 is fixedly connected with the nut connecting plate by the lifting plate 403.

A gas spring damping device is also arranged between the lower end of the lead screw and the mounting seat 401 of the lifting device.

The sensors 501 are all lever pressure sensors.

The unspecified part of the utility model is prior art.

Claims (6)

1. A brake drum inner hole detector, comprising a workbench, a two-dimensional mobile slide, a positioning assembly, a lifting device, a cantilever, a rotating shaft sleeve, and a measuring assembly, and is characterized in that: the workbench is provided with reference The base surface, one side of the base surface is provided with an upright support arm, the two-dimensional mobile slide table is set on the base surface of the workbench, and the two-dimensional mobile slide table is symmetrically provided with positioning for clamping and positioning the brake drum. Assemblies, the lifting device is installed on the support arm of the workbench, one end of the cantilever is installed on the lifting device, and the other end is provided with a through hole perpendicular to the base surface of the workbench. The sleeve is passed through the through hole of the cantilever through the plane thrust bearing, and the measuring assembly is installed on the rotating sleeve; the measuring assembly includes a bracket, a sensor, a fixed sleeve, a protective sleeve, and a guide sleeve, wherein the upper end of the guide sleeve and the rotating sleeve The lower end of the fixed sleeve is fixedly connected with the upper end of the rotating shaft sleeve, the lower end of the protective sleeve is fixedly connected with the upper end of the fixed sleeve, the bracket is installed in the fixed sleeve and the rotating shaft sleeve, and its upper part is fixed with the fixed sleeve by bolts. Even, the lower part is also fixedly connected with the rotating shaft sleeve by bolts. The upper end of the bracket is located in the protective sleeve, the lower end is located in the guide sleeve, and four sensors located on the same plane are arranged at the lower end of the bracket. The probe of each sensor passes through the guide The side wall of the sleeve, the guide sleeve as a whole is a cylindrical structure with an axial hole inside, the lower end of the outer cylindrical surface is provided with a tapered surface for guiding, and the cone surface is equally divided into a circle. through holes. 2. A brake drum inner hole detector according to claim 1, characterized in that: the bracket includes a handle, a positioning block A, a connecting block A, a positioning block B, a connecting block B, a vertical bar A, The vertical bar B, the horizontal bar A, and the horizontal bar B, the positioning block A as a whole is a cuboid structure, and the two ends of its long axis are provided with arc surfaces that match the inner holes of the fixed sleeve, and the two sides of the middle of the arc surface are There are connecting holes and are connected to the side wall of the fixed sleeve through bolts. The positioning block B is a cuboid structure as a whole, and the two ends of its long axis are provided with arc surfaces that match the inner holes of the rotating sleeve. There are connecting holes on both sides of the middle part and are connected with the side wall of the rotating shaft sleeve through bolts. The lower end of the handle is fixedly connected with the upper end of the positioning block A, and the upper end of the connecting block A is fixedly connected with the lower end of the positioning block A. The connecting block Both sides of the lower end of A are respectively provided with a vertical bar A, and the lower end of the vertical bar A is provided with a cross bar A, and the end of each cross bar A is fixedly connected with a measuring mounting seat for installing a sensor through a connecting rod, and the connecting block The upper end of B is fixedly connected with the lower end of the positioning block B, the two sides of the lower end of the connecting block B are respectively provided with vertical bars B, the lower ends of the vertical bars B are provided with horizontal bars B, and the ends of each horizontal bar B are provided with vertical bars , the end of each vertical rod is provided with a mounting hole for installing the sensor; the middle part of the circular arc surface of the positioning block B is provided with an open slot axially penetrating the circular arc surface, and the width of the open slot is the same as the width of the vertical rod A Cooperate. 3. A brake drum inner hole detector according to claim 1, characterized in that: the positioning assembly includes a positioning seat, a V-shaped block and a fastening bolt, and the positioning seat is fixedly arranged on the two-dimensional mobile slide table. On the middle side, the V-shaped block is arranged on the side of the positioning seat. The V-shaped groove axis of the V-shaped block is perpendicular to the upper end surface of the two-dimensional mobile slide table. The fastening bolts threaded with the positioning seat pass through the two sides of the positioning seat and pass through The rotation drives the V-shaped block to move on the upper surface of the two-dimensional moving slide table. 4. A brake drum inner hole tester according to claim 1, characterized in that: the lifting device includes a mounting base, parallel guide rails, a lifting plate, a screw nut pair and a hand wheel, and the mounting base is provided with a workbench On the side of the support arm, the parallel guide rails are installed in the mounting base. The parallel guide rails are provided with a lifting plate slidingly connected with the guide rails. The screw is located between the parallel guide rails. The lifting plate is fixedly connected with the nut connecting plate of the lead screw nut pair, and the hand wheel used to drive the lead screw nut pair is set on the upper end of the mounting seat. The hand wheel is provided with a hand wheel locking device, and the lifting plate is provided with a lifting locking device; The above-mentioned cantilever is fixedly connected with the nut connecting plate through the lifting plate. 5. A brake drum inner hole tester according to claim 1, characterized in that: said lifting device is provided with a gas spring damping device between the end of the lead screw and the mounting seat. 6. A brake drum inner hole detector according to claim 1, characterized in that: said sensors are all lever-type pressure sensors.