CN220187687U - Contact type measuring device for annular workpiece - Google Patents
Contact type measuring device for annular workpiece Download PDFInfo
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- CN220187687U CN220187687U CN202321577791.5U CN202321577791U CN220187687U CN 220187687 U CN220187687 U CN 220187687U CN 202321577791 U CN202321577791 U CN 202321577791U CN 220187687 U CN220187687 U CN 220187687U
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- 230000007246 mechanism Effects 0.000 claims abstract description 102
- 238000005259 measurement Methods 0.000 claims description 31
- 238000005056 compaction Methods 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 description 13
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a contact type measuring device for a circular workpiece, which comprises a base, a rotary shaft system mechanism arranged on the base, an outer diameter measuring mechanism and an inner diameter measuring mechanism, wherein the outer diameter measuring mechanism and the inner diameter measuring mechanism can move towards the rotary shaft system mechanism along a first direction; the rotary shafting mechanism comprises a rotary sliding table; the outer diameter measuring mechanism comprises a first outer diameter measuring head and a first outer diameter sensor; when the outer diameter measuring mechanism moves to a first stop position along a first direction, the first outer diameter measuring head is positioned beside the rotary sliding table, and the first outer diameter sensor is used for measuring the moving distance of the first outer diameter measuring head; the inner diameter measuring mechanism comprises an inner diameter measuring head and an inner diameter sensor, and when the inner diameter measuring mechanism moves to a first stop position along a first direction, the inner diameter measuring head is positioned right above the rotary sliding table; the inner diameter measuring head is opposite to the first outer diameter measuring head when moving to the second stop position along the third direction, and the inner diameter sensor is used for measuring the moving distance of the inner diameter measuring head. The utility model can efficiently measure the roundness of the outer diameter and the inner diameter of the annular workpiece.
Description
Technical Field
The utility model relates to the technical field of industrial measurement, in particular to a contact type measuring device for a circular workpiece.
Background
Ring-like parts are used in many industrial applications, such as pistons, bearings, rings, rollers, guide posts, rods, where metal-like rings are more common. The method can accurately and rapidly measure the annular workpieces, has very great significance in the aspect of industrial fields, and plays a key role in confirming the quality assurance of mass production of the annular workpieces.
For circular workpieces, roundness is one of the important measurement indexes. The roundness refers to the degree that the cross section of a workpiece is close to a theoretical circle, and specifically refers to the degree of deviation between the maximum diameter and the minimum diameter of the workpiece when the axis of the workpiece is fixed, namely the roundness (error). Traditionally, the method of measuring a circular workpiece is: the annular workpiece is mounted on a fixture, and then the outer diameter and the inner diameter of the workpiece are measured by using a dial indicator. However, the measurement method depends on manual operation, and the operation methods and stability of different personnel have certain influence on the measurement result, so that the measurement result is easy to be inaccurate.
Disclosure of Invention
Accordingly, an object of the present utility model is to provide a contact type measuring apparatus for an annular workpiece, which can efficiently measure the roundness of the outer diameter and the inner diameter of the annular workpiece.
The contact type measuring device for the annular workpiece comprises a base, and a rotary shaft system mechanism arranged on the base, wherein the rotary shaft system mechanism can move to an outer diameter measuring mechanism and an inner diameter measuring mechanism of the rotary shaft system mechanism along a first direction; the rotary shaft system mechanism comprises a rotary sliding table and is used for detachably fixing the annular workpiece; the outer diameter measuring mechanism comprises a first outer diameter measuring head and a first outer diameter sensor; when the outer diameter measuring mechanism moves to a first stop position along the first direction, the first outer diameter measuring head is positioned beside the rotary sliding table along the second direction and is opposite to the rotary sliding table, and the first outer diameter sensor is used for measuring the moving distance of the first outer diameter measuring head back to the direction of the rotary sliding table; the inner diameter measuring mechanism comprises an inner diameter measuring head and an inner diameter sensor, and when the inner diameter measuring mechanism moves to a first stop position along the first direction, the inner diameter measuring head is positioned right above the rotary sliding table; the inner diameter measuring head can move to the rotary sliding table along a third direction, and when the inner diameter measuring head moves to a second stop position along the third direction, the inner diameter measuring head is opposite to the first outer diameter measuring head, and the inner diameter sensor is used for measuring the moving distance of the inner diameter measuring head; wherein the first direction, the second direction and the third direction are perpendicular to each other.
Compared with the prior art, the contact type measuring device for the annular workpiece can automatically measure the roundness of the annular workpiece and has high measuring speed.
Further, the contact type measuring device of the annular workpiece comprises a sliding plate and a supporting frame, wherein the sliding plate is connected with the base in a sliding mode along the first direction, and the supporting frame is vertically fixed on the sliding plate; the outer diameter measuring mechanism and the inner diameter measuring mechanism are both arranged on the sliding plate; the outer diameter measuring mechanism comprises a first connecting block fixed on the supporting frame, and the first connecting block is elastically connected with the outer diameter measuring head through a first elastic piece.
Further, the first elastic piece is a coil spring, one end of the first elastic piece is fixedly connected with the first connecting block, and the other end of the first elastic piece is fixedly connected with the first outer diameter measuring head.
Further, the measuring end of the first outer diameter measuring head and the measuring end of the inner diameter measuring head are arc surfaces protruding outwards.
Further, the measuring end of the first outer diameter measuring head and the measuring end of the inner diameter measuring head are made of hard alloy.
Further, the contact type measuring device for the annular workpiece comprises two outer diameter measuring mechanisms and two inner diameter measuring mechanisms, wherein the two outer diameter measuring mechanisms are respectively arranged on two opposite sides of the rotary sliding table along the second direction, and the two inner diameter measuring mechanisms respectively correspond to one outer diameter measuring mechanism.
Further, the outer diameter measuring mechanism comprises a second outer diameter measuring head and a second outer diameter sensor, wherein the second outer diameter measuring head is arranged below the first outer diameter measuring head, and the second outer diameter sensor is used for measuring the moving distance of the second outer diameter measuring head back to the direction of the rotary sliding table.
Further, the inner diameter measuring mechanism comprises a lifting assembly, wherein the lifting assembly is driven to be fixedly connected with the inner diameter measuring head and drive the inner diameter measuring head to ascend or descend along the third direction.
Further, the inner diameter measuring mechanism comprises two inner diameter measuring mechanisms which are respectively arranged on two opposite sides of the rotary sliding table along the second direction.
Further, the rotary shaft system mechanism further comprises at least two compression blocks arranged at the top of the rotary sliding table and a rotary motor; one end of the compaction block is hinged to the top of the rotary sliding table, the other end of the compaction block is a free end, and the compaction block is used for clamping and fixing a circular workpiece on the top of the rotary sliding table; the rotary motor is provided with an output shaft, the output shaft is fixedly provided with a driving wheel, and the driving wheel is in transmission connection with the rotary sliding table through a driving belt.
Further, the contact type measuring device for the annular workpiece further comprises a dotting mechanism arranged on one side of the rotary shaft system mechanism, the dotting mechanism comprises a supporting seat and a dotting head arranged on the supporting seat, and the dotting head is in sliding connection with the supporting seat along the radial direction of the rotary sliding table.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of a contact measuring device for a circular workpiece according to the present utility model;
FIG. 2 is a schematic diagram of the structure of a rotating shaft mechanism in the contact type measuring device for the annular workpiece;
FIG. 3 is a front view of the outer diameter measuring mechanism and the inner diameter measuring mechanism in the contact measuring device for circular workpieces of the present utility model;
FIG. 4 is a top view of the outer diameter measuring mechanism and the inner diameter measuring mechanism in the contact measuring device for circular workpieces of the present utility model;
FIG. 5 is a schematic view of the structure of a first outer diameter measuring head of the outer diameter measuring mechanism in the contact measuring device for a circular workpiece according to the present utility model;
FIG. 6 is a schematic view of the structure of the inner diameter measuring head of the outer diameter measuring mechanism in the contact measuring device of the annular workpiece of the present utility model;
FIG. 7 is a schematic view of the structure of a first stage toroidal workpiece measured by the contact type measuring device for toroidal workpieces of the present utility model;
FIG. 8 is a schematic view of a structure for measuring a secondary annular workpiece by the contact type measuring device of the annular workpiece of the present utility model;
FIG. 9 is a schematic diagram of a measurement of a secondary annular workpiece by the contact measurement device of the annular workpiece of the present utility model;
FIG. 10 is a schematic view of the structure of the dotting mechanism in the contact type measuring device for circular workpieces of the present utility model;
reference numerals:
1. a primary annular workpiece; 2. a second-stage annular workpiece; 2a, a reference position of the secondary annular workpiece; 2b, the detected position of the secondary annular workpiece;
10. a base; 11. a sliding plate; 12. a support frame; 120. a lifting groove of the supporting frame;
20. a slewing shaft system mechanism; 200. rotating the sliding table; 202. a compaction block; 204. a rotating electric machine; 205. a slipway rotating wheel; 206. a driving wheel; 208. a transmission belt;
30. an outer diameter measuring mechanism; 301. a first outer diameter measurement head; 301a, measuring end of the first outer diameter measuring head; 302. a second outside diameter measuring head; 303. a first connection block; 304. a first connection plate; 305. a first elastic member; 307. a first outer diameter sensor;
40. an inner diameter measuring mechanism; 400. a lifting frame; 401. an inner diameter measuring head; 402. a lifting cylinder; 403. a second connection block; 404. a second connecting plate; 405. a second elastic member; 407. an inner diameter sensor;
50. a dotting mechanism; 500. a support base; 501. dotting head; 502. a driving cylinder; 503. dotting guide rails; 504. dotting a sliding block;
d1, a first direction; d2, a second direction; d3, third direction.
Detailed Description
It should be understood that the described embodiments are merely some, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the utility model, are intended to be within the scope of the embodiments of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" or "fixedly connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Fig. 1 shows a specific structure of an embodiment of a contact type measuring device for a circular ring-shaped workpiece of the present utility model. As shown in fig. 1, in the present embodiment, the contact type measuring apparatus for the annular workpiece 1 includes a base 10, a rotation axis mechanism 20 provided on the base 10, and an outer diameter measuring mechanism 30 and an inner diameter measuring mechanism 40 movable in a first direction D1 toward the rotation axis mechanism 20.
The base 10 has a square or rectangular shape, and has two parallel sliding rails 100 extending along the first direction D1 at the top, and each sliding rail 100 is slidably connected with a sliding block 102 that is matched with the sliding rail 100. The top of the sliding slide block 102 is fixedly provided with a sliding plate 11, and the top of the sliding plate 11 is vertically fixedly provided with a supporting frame 12. The sliding plate 11 and the supporting frame 12 form two installation spaces, namely a first space and a second space, and the rotating shaft system mechanism 20, the outer diameter measuring mechanism 30 and a part of the inner diameter measuring mechanism 40 are all located in the first space.
Specifically, as shown in fig. 2, the swing shafting mechanism 20 includes a rotary slide table 200 provided on the base 10, at least two pressing blocks 202 provided on the rotary slide table 200, and a rotary motor 204. The rotary sliding table 200 is cylindrical as a whole, and during measurement, the annular workpiece 1 is placed on the top of the rotary sliding table 200. The pressing block 202 has a wedge shape, one end of which is hinged to the top of the rotary sliding table 200, and the other end of which is a free end. In the present embodiment, the number of the pressing blocks 202 is 3, which are uniformly distributed at the top of the rotary slide table 200 near the edge. Of course, the number of the pressing blocks 202 may be 2, or 4, 5, as needed for the degree of pressing. The annular workpiece 1 generally has a bottom plate provided with an opening through which the pressing block 202 passes, and an annular peripheral side wall provided around the bottom plate. When the annular workpiece is placed on the rotary sliding table 200 before measurement, the compression block 202 passes through an opening on the bottom plate of the annular workpiece, then the free end of the compression block 202 rotates downwards to compress the annular workpiece 1, and the annular workpiece 1 is clamped and fixed on the rotary sliding table 200. Here, in order to realize that the pressing block 202 is always kept in a state of pressing the annular workpiece 1, a pressing cylinder (not shown) and a supporting rod (not shown) which are in one-to-one correspondence with the pressing block 202 are further disposed in the rotary sliding table 200, specifically: the pressing cylinder (not shown) is a telescopic cylinder having a telescopic rod vertically penetrating the top of the rotary slide table 200 and hinged to one end of the pressing block 202. A support bar (not shown) is vertically provided, one end of which penetrates the top of the rotary slide table 200 and is hinged to the corresponding pressing block 202 at about the middle. Thus, when the annular workpiece 1 needs to be fixed on the rotary sliding table 200, the telescopic rod (not shown) of the compression cylinder (not shown) is extended to push the hinged end of the compression block 202 upwards, and at this time, the free end of the compression block 202 rotates downwards due to the limiting effect of the support rod (not shown), so that the annular workpiece 1 is always clamped and fixed on the rotary sliding table 200. The rotating motor 204 has an output shaft fixedly connected with a driving wheel 206, and a coaxial sliding table runner 205 is fixed at the bottom of the rotating sliding table 200, and the driving wheel 206 is in driving connection with the sliding table runner 205 through a driving belt 208 to drive the rotating sliding table 200 to rotate around the axis. When the rotating motor 204 is started, the circular workpiece 1 on the rotating sliding table 200 is driven to rotate through the cooperation of the driving wheel 206 and the driving belt 208. Preferably, the sliding table rotating wheel 205 and the driving wheel 206 are synchronous wheels, and the driving belt 208 is a synchronous wheel matched with the synchronous wheels for improving the accuracy of driving.
Referring to fig. 3 to 4, the outer diameter measuring mechanism 30 includes a first connection block 303 fixed to the front surface of the support frame 12 and extending in the first direction D1, a first outer diameter measuring head 301 connected to the first connection block 303, and a first outer diameter sensor 307. One end of the first connecting block 303 is fixed to the front surface of the support frame 12, and the other end thereof is a free end. The first outer diameter measuring head 301 is connected with the first connecting block 303 through a first connecting plate 304, specifically, one end of the first connecting plate 304 extending along the first direction D1 is fixed on the front surface of the support frame 12, the end is a connecting end, and the other end is a free end; the thickness of the first connecting plate 304 near the connecting end in the horizontal direction is thinner, so that the first connecting plate 304 has a certain flexibility at the position, and the first connecting plate 304 can rotate in the horizontal direction by a short distance with the position as the axis. One end of the first outer diameter measuring head 301 is fixed to the free end of the first connecting plate 304, and the other end thereof is a measuring end 301a. When the sliding plate 11 drives the outer diameter measuring mechanism 30 to move to the first stop position along the first direction D1, the measuring end 301a of the first outer diameter measuring head 301 is opposite to the rotation axis of the rotating sliding table 200 and abuts against the outer side wall of the annular workpiece 1. The first outer diameter sensor 307 is provided on the first connecting block 303, which is located outside the first outer diameter measuring head 301 in the radial direction of the rotary slide table 200, and is aligned with the first connecting plate 304. When the outer side wall of the annular workpiece 1 has a protrusion, the protruding portion pushes the first outer diameter measuring head 301 to retract, and at this time, the first outer diameter sensor 307 can measure the moving distance of the first outer diameter measuring head 301. Of course, the first outer diameter sensor 307 may also measure the moving distance of the first outer diameter measuring head 301 by being provided on the first connection block 303 in alignment with the position of the first outer diameter measuring head 301. Since the measurement of the moving distance of the object by the sensor is a prior art, it is not described in detail herein.
As shown in fig. 5, the measuring end 301a of the first outer diameter measuring head 301 is preferably an arc surface protruding toward the rotary slide table 200 so as to avoid scraping the annular workpiece 1 during measurement by the first outer diameter measuring head 301. The material of the measuring end 301a of the first outer diameter measuring head 301 is hard alloy, so as to avoid abrasion of the measuring end 301a after multiple measurements. Here, the number of the outer diameter measuring mechanisms 30 may be 1 or 2. In the present embodiment, two outer diameter measuring mechanisms 30 are respectively disposed on opposite sides of the rotation axis mechanism 20 in the second direction D2, and the number of inner diameter measuring mechanisms 40 corresponds to the number of outer diameter measuring mechanisms 30. Wherein the second direction D2 is perpendicular to the first direction D1.
Further, as shown in fig. 4, the first connection plate 304 is elastically connected to the first connection block 303 by a first elastic member 305. In the present embodiment, the first elastic member 305 is specifically a coil spring, and one end thereof is connected to the first connection plate 304 and the other end thereof is connected to the first connection block 303. Thus, when the first outer diameter measuring head 301 retreats due to the protruding portion of the outer side wall of the annular workpiece 1, the first elastic member 305 can provide a certain buffer area for the first outer diameter measuring head 301, so as to avoid the first outer diameter measuring head 301 and the annular workpiece 1 from wearing away from each other. In addition, when the first outer diameter measuring head 301 is reset, the first elastic member 305 can also control the reset stroke and the force of the first outer diameter measuring head 301, so as to prevent the first outer diameter measuring head 301 from striking the annular workpiece 1 during reset.
The inner diameter measuring mechanism 40 includes a lifting assembly, a lifting frame 400 connected to the lifting assembly, and an inner diameter measuring head 401 and an inner diameter sensor 407 provided on the lifting frame 400. The lifter 400 is provided with the lifter groove 120 extending in the third direction D3. The lifting assembly is located in a lifting cylinder 402 of the second space, which is fixed to the back of the support frame 12. The lift cylinder 402 has a vertically upward telescoping rod. The lifting frame 400 is located in the first space, and one end thereof penetrates the lifting groove 120 of the support frame 12 and is fixed on the telescopic rod of the lifting cylinder 402. The inside diameter measuring head 401 is disposed at the bottom of the first space portion of the elevation frame 400 above the rotary slide table 200. Before measurement, the telescopic rod of the lifting cylinder 402 is in an extending state; when the sliding plate 11 drives the inner diameter measuring mechanism 40 to move to the first stop position along the first direction D2, the lifting cylinder 402 drives the lifting frame 400 to descend along the third direction D3, so that the inner diameter measuring head 401 can extend into the annular workpiece 1, and the inner diameter measuring head 401 extending into the annular workpiece 1 is opposite to the first outer diameter measuring head 301 and is abutted against the inner side wall of the annular workpiece 1. Here, the inner diameter measuring head 401 may be connected to the crane 400 through indirect members such as a second connection block 403 and a second connection plate 404, similarly to the outer diameter measuring mechanism 30. Specifically, the second connection block 403 extends in the first direction D1, and has one end fixed to the front surface of the lifter 400 and the other end being a free end. The inner diameter measuring head 401 is connected with the second connecting block 403 through the second connecting plate 404, specifically, one end of the second connecting plate 404 extending along the first direction D1 is fixed on the front surface of the lifting frame 400, the end is a connecting end, and the other end is a free end; the second connecting plate 404 has a thinner thickness along the horizontal direction at a position near the connecting end, similar to the first connecting plate 304, so that the second connecting plate 404 has a certain bendable line at the position, and the second connecting plate 404 can rotate along the horizontal direction by a short distance with the position as the axis. One end of the inner diameter measuring head 401 is fixed to the free end of the second connection plate 404, and the other end thereof is a measuring end 401a. When the lifting cylinder 402 drives the lifting frame 400 to move to the second stop position along the third direction D3, the measuring end 401a of the inner diameter measuring head 401 is opposite to the measuring end 301a of the first outer diameter measuring head 301 and abuts against the inner side wall of the annular workpiece 1. The inner diameter sensor 407 is disposed on the second connection block 403, and is located on the inner side of the inner diameter measuring head 401 along the radial direction of the rotary sliding table 200 and faces the second connection plate 404, so as to measure the moving distance of the inner diameter measuring head 401 when the inner side wall of the annular workpiece 1 has a protrusion and pushes the inner diameter measuring head 401 to retreat. Of course, the inner diameter sensor 407 may also be provided on the second connection block 403 to align with the position of the inner diameter measuring head 401, thereby measuring the moving distance of the inner diameter measuring head 401. Preferably, as shown in fig. 6, the measuring end 401a of the inner diameter measuring head 401 is an arc surface protruding toward the rotary slide table 200, so as to avoid scraping the annular workpiece 1 during measurement by the inner diameter measuring head 401. The material of the measuring end 401a of the inner diameter measuring head 401 is also hard alloy, so as to avoid abrasion of the measuring end 401a after multiple measurements. The third direction D3 is perpendicular to the first direction D1 and the second direction D2, respectively.
Further, as shown in fig. 4, the second connection plate 404 is elastically connected to the second connection block 403 through a second elastic member 405. In the present embodiment, the second elastic member 405 is specifically a coil spring, and one end thereof is connected to the second connection plate 404 and the other end thereof is connected to the second connection plate 403. Thus, when the inner diameter measuring head 401 retreats due to the protruding portion of the inner sidewall of the annular workpiece 1, the second elastic member 405 can provide a certain buffer area for the inner diameter measuring head 401, so as to avoid the inner diameter measuring head 401 and the annular workpiece 1 from wearing away from each other. In addition, when the inner diameter measuring head 401 is reset, the second elastic member 405 can also control the reset stroke and the force of the inner diameter measuring head 401, so as to prevent the inner diameter measuring head 401 from striking the annular workpiece 1 during reset.
Before the measurement, the annular workpiece 1 is mounted on the rotary slide table 200. During measurement, as shown in fig. 7, the sliding plate 11 drives the outer diameter measuring mechanism 30 and the inner diameter measuring mechanism 40 to move to the first stop position, so that the two first outer diameter measuring heads 301 of the two outer diameter measuring mechanisms 30 are abutted against the outer side wall of the annular workpiece 1. Then, the lifting cylinder 402 of the inner diameter measuring mechanism 40 drives the inner diameter measuring head 401 to extend into the annular workpiece 1 so that the inner diameter measuring head 401 faces the first outer diameter measuring head 301 and abuts against the inner side wall of the annular workpiece 1. The rotating motor 204 of the rotary shafting mechanism 20 drives the rotary sliding table 200 to rotate for one circle through the transmission belt 208, after the workpiece is positioned and rotated for 1 circle, the readings of the 2 first outer diameter sensors 307 change to obtain the circle center O of the measured position, the reading of one second outer diameter sensor corresponding to the workpiece is X when the workpiece is positioned and positioned at a certain position, the distance from X to the circle center O1 of the workpiece is calculated and recorded as B, and the difference value between the maximum value and the minimum value of B after one circle of rotation is the roundness of the outer diameter. Likewise, the roundness of the inner diameter of the work piece can also be measured by the above method, and will not be described here again.
In practical application, some annular workpieces are stepped annular workpieces, namely two-stage annular 2 workpieces which have upper and lower coaxial annular rings with different radiuses. Based on the circular ring-shaped workpiece with the structure, the jumping degree of the circular ring-shaped workpiece can be measured. The degree of runout is also one of the key indexes for evaluating the annular workpiece, and specifically comprises the following steps: when the workpiece rotates about its axis, the difference in maximum distance between the axis and the ideal center of rotation is known as runout (error). In order to measure the roundness and runout of the annular work piece at the same time, the outer diameter measuring mechanism 30 of the above-mentioned contact measuring device further includes a second outer diameter measuring head 302 and a second outer diameter sensor (not shown), and the second outer diameter measuring head 302 is located below the first outer diameter measuring head 301. A second outside diameter sensor (not shown) is provided on the outer side in the radial direction of the rotary slide table 200 for measuring the moving distance of the second outside diameter measuring head 302 in the radial direction. In this embodiment, like the first outer diameter measuring head 301, the second outer diameter measuring head 302 is also fixed on the supporting frame 12 through a connecting block and a connecting plate, and the other end of the second outer diameter measuring head 302 is a measuring end contacting with the annular workpiece 2, which is not described herein. The measuring end of the second outer diameter measuring head 302 is preferably an arc surface protruding toward the rotary slide table 200 so as to avoid scraping the annular workpiece 2 during measurement by the second outer diameter measuring head 302.
As shown in fig. 8 to 9, the two-stage annular workpiece 2 is divided into a reference position 2a at the bottom and a measured position 2b at the top. When the degree of runout of the annular workpiece is measured by the contact type measuring device, the second outer diameter sensor (not shown) converts the change of displacement of the second outer diameter measuring head 302 into data output, the circle center O2 of the reference position 2a is obtained by reading the change of two second outer diameter sensors (not shown) corresponding to the reference position 2a of the workpiece, the reading of one of the first outer diameter sensors 307 corresponding to the measured position 2b of the workpiece at a certain position is X, the distance from X to the circle center O2 of the reference position 2a of the workpiece is calculated and recorded as a, and after one rotation, the difference between the maximum value and the minimum value of a is the runout of the outer diameter. After the center O2 of the reference position 2a is obtained, the runout of the inner diameter of the workpiece measured position 2b can be measured in the same manner, and will not be described in detail here.
In other embodiments, the contact measurement device for circular workpieces further includes a dotting mechanism 50. As shown in fig. 1 and 10, the dotting mechanism 50 is disposed on the base 10 and located at one side of the swing shaft mechanism 20, and the dotting mechanism 50 includes a support base 500 and a dotting head 501 slidably connected to the top of the support base 500. The dotting head 501 is tapered with one end facing the rotary slide table 200. After the measurement of the roundness and runout is completed, for the annular workpieces 1,2 that pass the test, the dotting head 501 may strike the outer side walls of the annular workpieces 1,2 mounted on the rotary slide table 200 in the radial direction of the rotary slide table 200 to form marks on the annular workpieces 1, 2. Here, the sliding of the dotting head 501 may be achieved by a dotting guide rail 503 provided at the top of the support base 500 and extending in the radial direction of the rotary slide table 200, and a dotting slider 504 used in cooperation therewith, the dotting head 501 being fixed to the dotting slider 504, i.e., sliding back and forth in the radial direction of the rotary slide table 200. Further, the dotting mechanism 50 further includes a driving cylinder 502 disposed on the support base 500, and the driving cylinder 502 has a telescopic rod parallel to the dotting guide 503, and the telescopic rod is fixedly connected with the dotting head 501 to drive the dotting head 501 to move back and forth.
Compared with the prior art, the contact type measuring device for the annular workpiece realizes the measurement of the roundness and the runout degree of the annular workpiece in a contact type manner; in addition, the first outer diameter measuring head and the inner diameter measuring head are elastically connected to solve the problems of scratching parts, scratching and the like in contact measurement. The contact type measuring device provided by the utility model is simple in design, convenient to operate, high in measuring speed and suitable for batch measurement of circular workpieces.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and the utility model is intended to encompass such modifications and improvements.
Claims (10)
1. The utility model provides a contact measuring device of ring shape work piece which characterized in that: comprises a base (10), a rotary shaft system mechanism (20) arranged on the base (10), an outer diameter measuring mechanism (30) and an inner diameter measuring mechanism (40) which can move towards the rotary shaft system mechanism (20) along a first direction;
the rotary shaft system mechanism (20) comprises a rotary sliding table (200) and is used for detachably fixing annular workpieces (1, 2);
the outer diameter measuring mechanism (30) comprises a first outer diameter measuring head (301) and a first outer diameter sensor (307);
when the outer diameter measuring mechanism (30) moves to a first stop position along the first direction, the first outer diameter measuring head (301) is positioned beside the rotary sliding table (200) along a second direction and opposite to the rotary sliding table (200), and the first outer diameter sensor (307) is used for measuring the moving distance of the first outer diameter measuring head (301);
the inner diameter measuring mechanism (40) comprises an inner diameter measuring head (401) and an inner diameter sensor (407), and when the inner diameter measuring mechanism (40) moves to a first stop position along the first direction, the inner diameter measuring head (401) is positioned right above the rotary sliding table (200); the inner diameter measuring head (401) can move towards the rotary sliding table (200) along a third direction, when the inner diameter measuring head (401) moves to a second stop position along the third direction, the inner diameter measuring head (401) is opposite to the first outer diameter measuring head (301), and the inner diameter sensor (407) is used for measuring the moving distance of the inner diameter measuring head (401);
wherein the first direction, the second direction and the third direction are perpendicular to each other.
2. The contact measurement device for an annular workpiece according to claim 1, wherein:
comprises a sliding plate (11) which is connected with the base (10) in a sliding way along the first direction, and a supporting frame (12) which is vertically fixed on the sliding plate (11);
the outer diameter measuring mechanism (30) and the inner diameter measuring mechanism (40) are arranged on the sliding plate (11);
the outer diameter measuring mechanism (30) comprises a first connecting block (303) fixed on the supporting frame (12), and the first connecting block (303) is elastically connected with the outer diameter measuring head through a first elastic piece (305).
3. The contact measurement device for an annular workpiece according to claim 2, wherein:
the first elastic piece (305) is a coil spring, one end of the first elastic piece is fixedly connected with the first connecting block (303), and the other end of the first elastic piece is fixedly connected with the first outer diameter measuring head (301).
4. The contact measurement device for an annular workpiece according to claim 1, wherein:
the measuring end (301 a) of the first outer diameter measuring head (301) and the measuring end (401 a) of the inner diameter measuring head (401) are arc surfaces protruding outwards.
5. The contact measurement device for an annular workpiece according to claim 4, wherein:
the material of the measuring end (301 a) of the first outer diameter measuring head (301) and the material of the measuring end (401 a) of the inner diameter measuring head (401) are hard alloy.
6. The contact type measuring device for a circular ring-shaped workpiece according to any one of claims 1 to 5, wherein:
the device comprises two outer diameter measuring mechanisms (30) and two inner diameter measuring mechanisms (40), wherein the two outer diameter measuring mechanisms (30) are respectively arranged on two opposite sides of the rotary sliding table (200) along the second direction, and the two inner diameter measuring mechanisms (40) respectively correspond to one outer diameter measuring mechanism (30).
7. The contact measurement device for an annular workpiece according to claim 6, wherein:
the outer diameter measuring mechanism (30) comprises a second outer diameter measuring head (302) and a second outer diameter sensor, the second outer diameter measuring head (302) is arranged below the first outer diameter measuring head (301), and the second outer diameter sensor is used for measuring the moving distance of the second outer diameter measuring head (302) back to the direction of the rotary sliding table (200).
8. The contact measurement device for an annular workpiece according to claim 1, wherein:
the inner diameter measuring mechanism (40) comprises a lifting assembly, wherein the lifting assembly is driven to be fixedly connected with the inner diameter measuring head (401), and the inner diameter measuring head (401) is driven to ascend or descend along the third direction.
9. The contact measurement device for an annular workpiece according to claim 1, wherein:
the rotary shaft system mechanism (20) further comprises at least two compaction blocks (202) arranged at the top of the rotary sliding table (200) and a rotary motor (204);
one end of the compaction block (202) is hinged to the top of the rotary sliding table (200), the other end of the compaction block is a free end, and the compaction block (202) is used for clamping and fixing the annular workpieces (1, 2) on the top of the rotary sliding table (200);
the rotary motor (204) is provided with an output shaft, a driving wheel (206) is fixedly arranged on the output shaft, and the driving wheel (206) is in driving connection with the rotary sliding table (200) through a driving belt (208).
10. The contact measurement device for an annular workpiece according to claim 1, wherein:
the rotary shaft system comprises a rotary shaft system mechanism (20), and is characterized by further comprising a dotting mechanism (50) arranged on one side of the rotary shaft system mechanism (20), wherein the dotting mechanism (50) comprises a supporting seat (500) and a dotting head (501) arranged on the supporting seat (500), and the dotting head (501) is in sliding connection with the supporting seat (500) along the radial direction of the rotary sliding table (200).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321577791.5U CN220187687U (en) | 2023-06-19 | 2023-06-19 | Contact type measuring device for annular workpiece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321577791.5U CN220187687U (en) | 2023-06-19 | 2023-06-19 | Contact type measuring device for annular workpiece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120445135A (en) * | 2025-07-09 | 2025-08-08 | 德星技术（苏州）有限公司 | Automatic measuring device for filter center tube size |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120445135A (en) * | 2025-07-09 | 2025-08-08 | 德星技术（苏州）有限公司 | Automatic measuring device for filter center tube size |
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