CN213481227U

CN213481227U - Concentricity detector

Info

Publication number: CN213481227U
Application number: CN202022757197.7U
Authority: CN
Inventors: 李兴杰; 白连鹏
Original assignee: Qingdao Jiemeida Cnc Machinery Co ltd
Current assignee: Qingdao Jiemeida Cnc Machinery Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-18
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to a concentricity detector, which comprises a base, fixing base and determine module, the fixing base is improved level and is provided with two backing rolls side by side, one side of fixing base is provided with height-adjustable's mounting bracket, the mounting bracket is improved level and is provided with two compression rollers side by side, two compression rollers are crisscross each other with two backing rolls projections on the horizontal plane, be provided with the adjusting device who is used for height-adjusting on the mounting bracket, be provided with the rotating device who is used for rotating the backing roll between two compression rollers on the base, determine module sets up on the base. When the inspection personnel are fixed to the installation of small-size work piece, fixed with the work piece through two backing rolls and a compression roller on the fixing base, to cylinder jumbo size work piece, cup joint the work piece on two compression rollers, make a backing roll support tightly and accomplish the centre gripping to the work piece in the bottom of work piece, can be applicable to the concentricity detection of the work piece of different sizes, this application has the effect that improves the commonality of instrument.

Description

Concentricity detector

Technical Field

The application relates to the field of mechanical precision detection instruments, in particular to a concentricity detector.

Background

The concentricity detector is used for finding concentricity of two shafts of various rotating equipment such as a centrifugal pump, a compressor, a fan, a generator and the like. The device has the characteristics of reasonable structure, high precision, small error, wide application range, convenient use and maintenance and the like, is an ideal special measuring tool, and is widely applied to the mechanical industries of petrifaction, power generation, papermaking, textile and the like.

The patent with the publication number of CN205027290U discloses an inside and outside diameter concentricity detector, by the base, a fixed base, the top pressure subassembly, determine module, part are constituteed, the fixing base is installed in the upper left side position of base, two determine module fixed columns are installed in the fixing base below position, part fixed column central line is parallel with determine module fixed column central line, the top pressure subassembly is installed in fixing base one side, be provided with the spring on the support arm, become the closure naturally, press the support arm and push down the part, exert pressing force to the part under the spring action.

With respect to the related art among the above, there are the following drawbacks: when the detector is used, parts need to be placed on the two part fixing columns and pressed on the tops of the workpieces through the pressing assembly, the height adjusting range of the pressing assembly is limited, the detector is only suitable for single detection of coaxiality of small workpieces, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the commonality of detecting instrument, this application provides a concentricity detector.

The application provides a concentricity detector adopts following technical scheme:

the utility model provides a concentricity detector, includes base, fixing base and the determine module of setting on the base, the fixing base is installed on the base, the fixing base is improved level and is provided with two backing rolls side by side, the one end and the fixing base of backing roll rotate to be connected, one side of fixing base is provided with height-adjustable's mounting bracket, the mounting bracket is improved level and is provided with two compression rollers side by side, the compression roller is parallel with the backing roll and is located the backing roll top, two the compression roller is crisscross each other with the projection of two backing rolls on the horizontal plane, the one end and the mounting bracket of compression roller rotate to be connected, be provided with the.

Through adopting above-mentioned technical scheme, when the inspection personnel carry out the concentricity detection to small-size work piece, put the work piece on the fixing base between two backing rolls, make the work piece look for heart automatically, adjusting device lift mounting bracket height again, make the compression roller that lies in directly over two backing rolls on the mounting bracket compress tightly in the work piece top, thereby it is fixed with the work piece, rethread rotating device rotates the backing roll, drive the work piece and rotate, utilize the determine module to begin the concentricity detection, to the cylinder work piece, and when the internal diameter is not less than two compression roller upper and outer wall farthest distances, cup joint the work piece on two compression rollers, order about the mounting bracket decline again, make a backing roll support the bottom at the work piece tightly, in order to accomplish the fixed of work piece, can be applicable to the concentricity detection of the work piece of not unidimensional, improve.

Optionally, adjusting device includes interior pole, outer pole and stop bolt, the outer pole is vertical to set firmly on the roof of base, interior pole and mounting bracket fixed connection, interior pole slides and wears to establish the top at the outer pole, the top of outer pole radially set up along self with the screw hole of stop bolt adaptation, stop bolt threaded connection in the threaded hole and with interior pole butt.

Through adopting above-mentioned technical scheme, when the lift mounting bracket, loosen spacing bolt, the length of pole outside stretching out in the pole in the slip, reuse spacing bolt and support tight fixed interior pole, adjust the height of mounting bracket promptly, convenient operation.

Optionally, be provided with the rotating device who is used for rotating the backing roll between two compression rollers on the base, rotating device includes the rocking handle, one the coaxial rigid coupling of one end that the backing roll is close to the fixing base has the axis of rotation, the rotation hole has been seted up on the fixing base, the axis of rotation is worn to establish and is rotated the setting and at the rotation downthehole, the one end fixed connection of backing roll is kept away from with the axis of rotation to the one end of rocking handle.

By adopting the technical scheme, the detection personnel can drive a supporting roll on the fixing seat to rotate by rotating the rocking handle, so that the workpiece is driven to rotate by the friction force between the supporting roll and the workpiece, and the operation is convenient.

Optionally, the rocking handle includes connecting rod, connecting axle, slider and handheld portion, the perpendicular fixed connection of connecting axle is in the one end of connecting rod, the connecting axle is kept away from the one end and the coaxial fixed connection of axis of rotation of connecting rod, the spout has been seted up along self length direction on the connecting rod, the slider slides along spout length direction and sets up in the spout, handheld portion rotates and sets up on the slider, the axis of rotation of handheld portion is parallel with the axis of connecting axle, be provided with on the connecting rod and be used for restricting the gliding first locating part of slider.

Through adopting above-mentioned technical scheme, measurement personnel are examining not unidimensional work piece time measuring, loosen first locating part, the slider on the sliding connection pole, adjust the straight-line distance of handheld portion distance from the connecting axle of rocking handle, thereby change measurement personnel and ordering about the regulation precision of backing roll when rotating, make measurement personnel can increase the hand distance of cycle when detecting small-size work piece, reduce the hand distance of cycle when detecting big size work piece, compromise detection precision and efficiency of software testing, the commonality is better.

Optionally, the first limiting part is a butterfly nut, a stud adapted to the butterfly nut is fixedly arranged on the sliding block, the butterfly nut is in threaded connection with the stud, and the butterfly nut can be abutted to the connecting rod.

Through adopting above-mentioned technical scheme, when the slider was locked to the inspection personnel, screw up the butterfly nut, make the butterfly nut remove on the double-screw bolt and support tight connecting rod, make butterfly nut and slider press from both sides tight connecting rod, can restrict the slider and slide convenient operation.

Optionally, the detection assembly comprises a first sliding seat arranged on one side of the supporting roll far away from the fixed seat along the axial sliding of the supporting roll, a second sliding seat arranged on one side of the supporting roll along the axial sliding of the supporting roll, a first detection head arranged on the first sliding seat and used for detecting the concentricity of the inner wall of the workpiece, and a second detection head arranged on the second sliding seat and used for detecting the concentricity of the outer wall of the workpiece.

Through adopting above-mentioned technical scheme, remove first sliding seat to rotate first detection head to contact pilotage and work piece inner wall contact, it is fixed with first sliding seat to reuse second locating part, removes second sliding seat, and rotates the second and detect head to contact pilotage and work piece outer wall contact, it is fixed to second sliding seat to reuse third locating part, can detect convenient to use to the inner wall and the outer wall concentricity of work piece simultaneously.

Optionally, the first detection head is connected with the first sliding seat damping rotation, the axis of rotation level of the first detection head and the axis of the perpendicular to backing roll, the damping rotation is provided with the installation piece on the second sliding seat, the axis of rotation of installation piece is on a parallel with the axis of backing roll, the rigid coupling is equipped with the slide bar on the second detection head, the slide bar slides and wears to establish on the installation piece, the length direction of slide bar is perpendicular with the rotation direction of installation piece, be provided with on the installation piece and be used for restricting the gliding fourth locating part of slide bar.

Through adopting above-mentioned technical scheme, when carrying out the concentricity detection to unidimensional work piece, the measuring personnel slide the second on the installation piece and detect overhead slide bar to suitable position, reuse fourth locating part to fix the slide bar to the installation piece rotates, can make the second detect the head and carry out the concentricity detection to unidimensional work piece, and the commonality is better.

Optionally, the outer walls of the supporting roller and the compression roller are sleeved with anti-slip sleeves.

Through adopting above-mentioned technical scheme, the frictional force between anti-skidding cover can increase backing roll and compression roller and the work piece improves work piece installation stability to it changes the work piece rotation to make the backing roll rotate the in-process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when a detector installs and fixes a small-sized workpiece, the workpiece is fixed through two supporting rolls and one compression roll on the fixing seat, and for a cylindrical large-sized workpiece, the workpiece is sleeved on the two compression rolls, so that one supporting roll is tightly abutted against the bottom of the workpiece to clamp the workpiece, the concentricity detection device can be suitable for concentricity detection of workpieces with different sizes, and the universality of the device is improved;

2. when a detector detects workpieces with different sizes, the first limiting piece is loosened, the sliding block on the connecting rod is slid, and the linear distance between the handheld part and the connecting shaft of the rocking handle is adjusted, so that the adjusting precision of the detector when the detector drives the supporting roller to rotate is changed, the periodic hand-cranking distance can be increased when the detector detects small-size workpieces, the periodic hand-cranking distance is reduced when the detector detects large-size workpieces, the detection precision and the test efficiency are both considered, and the universality is better;

3. when carrying out the concentricity and detecting not unidimensional work piece, the measuring personnel slide the second on the installation piece and detect overhead slide bar to suitable position, reuse fourth locating part to fix the slide bar to the rotation installation piece can make the second detect the head and carry out the concentricity and detect not unidimensional work piece, and the commonality is better.

Drawings

Fig. 1 is a schematic overall structure diagram of the concentricity detector in the embodiment of the present application.

Fig. 2 is a schematic overall structure diagram of another view angle of the concentricity detector according to the embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Description of reference numerals: 1. a base; 2. a fixed seat; 21. a support roller; 22. a rotating shaft; 3. a detection component; 31. a first sliding seat; 32. a second sliding seat; 33. a first detection head; 34. a second detection head; 35. a second limiting member; 36. a third limiting member; 37. mounting blocks; 38. a fourth limiting member; 39. a slide bar; 4. a mounting frame; 41. a compression roller; 5. an adjustment device; 51. an inner rod; 52. an outer rod; 53. a limit bolt; 6. a rotating device; 61. a rocking handle; 611. a connecting rod; 612. a connecting shaft; 613. a slider; 614. a hand-held portion; 615. a chute; 616. a butterfly nut; 617. a stud; 62. rotating the hole; 7. an anti-slip sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses concentricity detector. Referring to fig. 1, the concentricity detector includes a base 1, a work holding mechanism, and a detection assembly 3. The workpiece clamping mechanism comprises two supporting rollers 21 which are horizontally arranged side by side, and two pressing rollers 41 which are horizontally arranged above the supporting rollers 21 side by side and are mutually staggered with the projections of the supporting rollers 21 on a horizontal plane. The base 1 is provided with a fixed seat 2 in an integrated mode, and the end portions of the two supporting rollers 21 on the same side are rotatably installed on the fixed seat 2. Be located one side of fixing base 2 on base 1, be provided with mounting bracket 4, mounting bracket 4 includes the regulating arm 5 of being connected and the scalable regulation of vertical direction with base 1 to and be located the horizontal support body at 5 tops of regulating arm, the tip of two compression rollers 41 and backing roll 21 turning point homonymies rotates with the horizontal support body to be connected.

Referring to fig. 1, in the present embodiment, the adjusting device 5 includes an inner lever 51, an outer lever 52, and a limit bolt 53. The bottom end of the outer rod 52 is vertically welded on the top wall of the base 1, the outer rod 52 is hollow inside and is open at the top, and the inner rod 51 is slidably arranged in the outer rod 52 and extends out of the top of the outer rod 52. The outer rod 52 and the inner rod 51 are each polygonal in cross-sectional shape to restrict the inner rod 51 from horizontally rotating in the outer rod 52. The position on the outer wall of outer pole 52 near the top is seted up with the screw hole of spacing bolt 53 adaptation, and spacing bolt 53 and screw hole threaded connection. By tightening the limit bolt 53, the limit bolt 53 abuts against the outer wall of the inner rod 51, and the inner rod 51 can be restricted from sliding in the outer rod 52, thereby fixing the height of the mounting bracket 4.

In the process of installing the workpiece, according to the actual size of the workpiece, when the workpiece is solid or the inner diameter of the workpiece is smaller than the farthest linear distance between the outer walls of the two press rollers 41, the workpiece is placed on the two support rollers 21, then the press rollers 41 are lowered, and the workpiece is fixed through the three rollers. When the inner diameter of the workpiece is greater than or equal to the farthest linear distance between the outer walls of the two compression rollers 41, a detector can sleeve the workpiece on the two compression rollers 41, and then the supporting rod between the two compression rollers 41 in the supporting roller 21 below is abutted against the bottom wall of the workpiece, so that the workpiece is clamped by clamping the lower half part of the workpiece.

Referring to fig. 2 and 3, in order to drive the workpiece to rotate so as to detect the concentricity of the peripheral wall of the workpiece, the fixed base 2 is provided with a rotating device 6 for rotating one pressing roller 41 of the two pressing rollers 41, and the rotated pressing roller 41 is positioned between the horizontal projections of the two supporting rollers 21. In the present embodiment, the turning device 6 includes a rocking handle 61 and a turning shaft 22. The rotating shaft 22 is coaxially and fixedly connected with the supporting roller 21, a rotating hole 62 for the rotating shaft 22 to pass through is formed in the fixing seat 2, and the rotating shaft 22 is rotatably arranged in the rotating hole 62 in a penetrating mode. The rocking handle 61 is fixedly connected with one end of the rotating shaft 22 far away from the supporting roller 21.

Referring to fig. 2 and 3, in order to change the angular speed of rotation of the handle 61 during the rotation cycle of the handle 61 according to the requirement of detection accuracy during the detection of workpieces with different sizes, the handle 61 includes a hand-held portion 614, and the distance between the hand-held portion 614 and the rotation shaft 22 can be changed. In this embodiment, the rocking handle 61 further includes a connecting rod 611, a connecting shaft 612 and a slider 613, the connecting shaft 612 is coaxially and fixedly connected with the rotating shaft 22, one end of the connecting rod 611 is fixedly connected with the connecting shaft 612, and the length direction of the connecting rod 611 is perpendicular to the axis of the connecting shaft 612. The connecting rod 611 is provided with a sliding groove 615 along the length direction thereof, the sliding groove 615 is a T-shaped groove, the sliding block 613 is slidably mounted in the sliding groove 615, and the handheld portion 614 is rotatably mounted on the sliding block 613. The hand-held portion 614 and the connecting shaft 612 are located at both sides of the connecting rod 611, respectively.

Referring to fig. 2 and 3, the slider 613 is further provided with a first limiting member for limiting the slider 613 to slide on the connecting rod 611, and the first limiting member is a butterfly nut 616. A stud 617 matched with the butterfly nut 616 is vertically and fixedly connected to one surface of the sliding block 613 with the handheld portion 614, the butterfly nut 616 is in threaded connection with the stud 617, and when the butterfly nut 616 is screwed down, the outer wall of the connecting rod is tightly abutted, so that the connecting rod is pressed through the butterfly nut 616 and the sliding block 613, and the position of the sliding block 613 is fixed.

Referring to fig. 1 and 2, the outer walls of the supporting roller 21 and the pressing roller 41 are both sleeved with the anti-slip sleeves 7, and the anti-slip sleeves 7 are made of rubber, so that the friction force between a workpiece and each roller is increased, and the workpiece clamping stability is improved. And the workpiece can be more conveniently driven to rotate in the process of driving the workpiece to rotate by using the supporting roller 21.

Referring to fig. 1 and 2, the inspection assembly 3 includes a first inspection unit and a second inspection unit, which respectively inspect the concentricity of the inner wall and the outer wall of the workpiece. The first detection unit comprises a first sliding seat 31 and a first detection head 33, two guide rods are fixedly arranged on the base 1 in parallel with the axial direction of the supporting roller 21, and the first sliding seat 31 is limited to move by a second limiting piece 35 on one guide rod which is slidably arranged on the first sliding seat 31. The second limiting member 35 may be a fastening bolt, which is in threaded connection with the first sliding seat 31 and can be abutted against the outer wall of the guide rod. The first detection head 33 comprises a micrometer dial and a micrometer contact pin, a central shaft is further fixed on the first detection head 33, and the central shaft is in damping rotation connection with the first sliding seat 31 through a bidirectional damping bearing.

Referring to fig. 1 and 2, the second sensing unit includes a second sliding base 32, a second sensing head 34, a mounting block 37, and a sliding rod 39. The second sliding seat 32 is slidably mounted on another guiding rod on the base 1, the second sliding seat 32 is limited and fixed by a third limiting member 36, and the third limiting member 36 can be a fastening bolt, and is connected to the second sliding seat 32 by a fastening bolt thread, and abuts against the guiding rod, so as to limit the movement of the second sliding seat 32. The mounting block 37 is connected in a damped rotational connection with the second sliding seat 32 by means of a two-way damping bearing, the axis of rotation of which is parallel to the axis of the support roller 21. The sliding rod 39 is fixedly installed on the second detection head 34, a through hole for the sliding rod 39 to pass through is formed in the installation block 37, the sliding rod 39 is slidably arranged in the through hole in a penetrating mode, and the length direction of the sliding rod 39 is perpendicular to the rotation axis of the installation block 37. The mounting block 37 fixes the sliding rod 39 through a fourth limiting member 38, and the fourth limiting member 38 may be a fastening bolt, and the fastening bolt is in threaded connection with the mounting block 37, and limits the movement of the sliding rod 39 by fastening the sliding rod 39. The second detection head 34 has the same structure as the first detection head 33.

The implementation principle of the concentricity detector in the embodiment of the application is as follows: when a detector detects the concentricity of a small-sized workpiece, the workpiece is placed between the two supporting rollers 21 on the fixing seat 2, the workpiece is automatically centered, the length of the inner rod 51 extending out of the outer rod 52 is adjusted, the height of the mounting frame 4 is lifted, the compression roller 41 positioned right above the two supporting rollers 21 on the mounting frame 4 is pressed above the workpiece, and the inner rod 51 and the outer rod 52 are fixed by using the limiting bolt 53, so that the workpiece is fixed. And then the rocking handle 61 is rotated to drive the supporting roller 21 positioned between the two compression rollers 41 in the supporting roller 21 to rotate so as to drive the workpiece to rotate. By sliding the first slide base 31 and the second slide base 32, the contact pin of the first detection head 33 is held in close contact with the outer wall of the workpiece, and the contact pin of the second detection head 34 is held in close contact with the inner wall of the workpiece, and the concentricity detection can be started. For the cylindrical workpiece, when the inner diameter is not smaller than the farthest distance between the upper outer walls of the two compression rollers 41, the workpiece is sleeved on the two compression rollers 41, the mounting frame 4 is driven to descend, the supporting roller 21 is abutted to the bottom of the workpiece, the workpiece is fixed, the concentricity detection device can be suitable for concentricity detection of workpieces with different sizes, and the universality of an instrument is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a concentricity detector, includes base (1), fixing base (2) and detection element (3) of setting on base (1), install on base (1) fixing base (2), fixing base (2) are improved level and are provided with two backing rolls (21) side by side, the one end and the fixing base (2) of backing roll (21) rotate and are connected its characterized in that: one side of fixing base (2) is provided with mounting bracket (4) with adjustable height, mounting bracket (4) are improved level and are provided with two compression rollers (41) side by side, compression roller (41) are parallel with backing roll (21) and are located backing roll (21) top, two compression roller (41) are crisscross each other with two projection of backing roll (21) on the horizontal plane, the one end and mounting bracket (4) of compression roller (41) rotate to be connected, be provided with adjusting device (5) that are used for height-adjusting on mounting bracket (4).

2. The concentricity detector of claim 1, wherein: adjusting device (5) are including interior pole (51), outer pole (52) and stop bolt (53), outer pole (52) are vertical to be set firmly on the roof of base (1), interior pole (51) and mounting bracket (4) fixed connection, interior pole (51) slide and wear to establish the top at outer pole (52), the top of outer pole (52) radially set up along self with the screw hole of stop bolt (53) adaptation, stop bolt (53) threaded connection in the screw hole and with interior pole (51) butt.

3. The concentricity detector of claim 1, wherein: be provided with rotating device (6) that are used for rotating backing roll (21) between two compression rollers (41) on base (1), rotating device (6) are including rocking handle (61), one the coaxial rigid coupling of one end that backing roll (21) are close to fixing base (2) has axis of rotation (22), rotation hole (62) have been seted up on fixing base (2), axis of rotation (22) are worn to establish and are rotated and set up in rotation hole (62), the one end fixed connection of backing roll (21) is kept away from with axis of rotation (22) to the one end of rocking handle (61).

4. A concentricity detector as claimed in claim 3, wherein: the rocking handle (61) comprises a connecting rod (611), a connecting shaft (612), a sliding block (613) and a handheld part (614), the connecting shaft (612) is vertically and fixedly connected to one end of the connecting rod (611), one end, far away from the connecting rod (611), of the connecting shaft (612) is coaxially and fixedly connected with a rotating shaft (22), a sliding groove (615) is formed in the connecting rod (611) along the length direction of the connecting shaft (611), the sliding block (613) is arranged in the sliding groove (615) in a sliding mode along the length direction of the sliding groove (615), the handheld part (614) is rotatably arranged on the sliding block (613), the rotating axis of the handheld part (614) is parallel to the axis of the connecting shaft (612), and a first limiting part used for limiting the sliding of the sliding block (613) is arranged on the connecting rod.

5. The concentricity detector of claim 4, wherein: the first limiting part is a butterfly nut (616), a stud (617) matched with the butterfly nut (616) is fixedly arranged on the sliding block (613), the butterfly nut (616) is in threaded connection with the stud (617), and the butterfly nut (616) can be abutted to the connecting rod (611).

6. The concentricity detector of claim 1, wherein: the detection assembly (3) comprises a first sliding seat (31) arranged on one side of the support roller (21) far away from the fixed seat (2) along the axial sliding of the support roller (21), a second sliding seat (32) arranged on one side of the support roller (21) along the axial sliding of the support roller (21), a first detection head (33) arranged on the first sliding seat (31) and used for detecting the concentricity of the inner wall of the workpiece, and a second detection head (34) arranged on the second sliding seat (32) and used for detecting the concentricity of the outer wall of the workpiece.

7. The concentricity detector of claim 6, wherein: first detection head (33) and first sliding seat (31) damping rotation are connected, the axis of rotation level and the axis of perpendicular to backing roll (21) of first detection head (33), damping rotation is provided with installation piece (37) on second sliding seat (32), the axis of rotation of installation piece (37) is on a parallel with the axis of backing roll (21), the rigid coupling is equipped with slide bar (39) on second detection head (34), slide bar (39) slide and wear to establish on installation piece (37), the length direction of slide bar (39) is perpendicular with the rotation direction of installation piece (37), be provided with on installation piece (37) and be used for restricting gliding fourth locating part (38) of slide bar (39).

8. The concentricity detector of claim 1, wherein: and the outer walls of the supporting roller (21) and the compression roller (41) are sleeved with anti-skidding sleeves (7).