CN114812480B - Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece - Google Patents
Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece Download PDFInfo
- Publication number
- CN114812480B CN114812480B CN202210532201.0A CN202210532201A CN114812480B CN 114812480 B CN114812480 B CN 114812480B CN 202210532201 A CN202210532201 A CN 202210532201A CN 114812480 B CN114812480 B CN 114812480B
- Authority
- CN
- China
- Prior art keywords
- assembly
- workpiece
- clamping
- group
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A precise measuring device for the appearance characteristics of the outer surface of a large-caliber workpiece belongs to the field of precise measurement of rotary workpieces, and comprises a power assembly, an encoder assembly, a supporting assembly, a workpiece clamping assembly, a sensor assembly and a bottom plate. The power assembly is fixedly connected to the left front of the bottom plate, the encoder assembly is fixedly connected to the middle of the left side of the bottom plate, the supporting assembly is fixedly connected to the middle of the bottom plate, the workpiece clamping assembly is fixedly connected with the supporting assembly through a key, and the sensor assembly is fixedly connected to the right rear of the bottom plate. According to the invention, the stepping motor drives the workpiece to continuously rotate, the displacement sensor and the encoder work cooperatively, so that the morphology information of each point on the surface of the workpiece can be synchronously acquired in real time, the device has a simple structure, a short transmission chain and small accumulated error, and the characteristic information of the outer surface of the workpiece can be effectively obtained. The workpiece clamping assembly comprises three claw groups, and can clamp various large-caliber workpieces; the thread disc, the ejector block and the spring jointly control the jaw group to be opened and closed, the device can be operated by one hand, reset flexibly, and accurate and efficient precise measurement of parts can be realized.
Description
Technical Field
The invention belongs to the field of precise measurement of rotary workpieces, and relates to structural design and transmission principle design of a precise measurement device.
Background
In engineering applications, columnar or disc-shaped structures (such as gears, cycloidal gears, spline shafts and the like) are widely applied to various mechanical equipment, the working surfaces of the columnar or disc-shaped structures are usually cylindrical outer surfaces, the surface quality of a workpiece has a large influence on the dynamic performance of the workpiece, and in order to obtain the surface characteristics of the workpiece, the rotary type measuring instrument has extremely high research value in the measuring field and has wide application prospect.
In recent years, as more and more high-precision devices are designed and manufactured, demands of markets for high-precision workpieces are increasing, demands of industrial devices for precision of parts are increasing, and surface quality of the workpieces is becoming a key factor for improving operation precision of the devices. In order to improve the precision of the workpiece, the high-precision workpiece is ensured to be processed and manufactured, and the surface characteristics of the workpiece are ensured to be quantitatively judged. Therefore, in actual production, high-performance workpiece processing equipment is required, and a high-sensitivity and high-precision detection device is also required to be designed and manufactured. Currently, the conventional gyrometer in the market is mainly divided into two types: the special rotary measuring equipment is mainly provided with a three-jaw chuck at one end and a center at the other end or is clamped by the centers at both ends, so that the special rotary measuring equipment is mainly used for clamping workpieces with smaller cross section sizes, and has higher detection application difficulty for the workpieces with large apertures and with outer cylindrical surfaces as working surfaces; the other type is a three-coordinate measuring machine, which can realize the measurement of the characteristics of the flatness, roundness and the like of the workpiece, but the three-coordinate measuring machine has less test data quantity, cannot realize the continuous measurement of the surface of the workpiece, has poor data synergy, has the test precision related to the experience of operators, and has high equipment price and low economic applicability. Therefore, the design and development of the continuous rotation measuring device for precisely measuring the large-caliber columnar or disc-shaped workpiece have important significance and research value.
In summary, the surface topography measurement of the large-caliber columnar or disk-shaped workpiece is urgently needed to be a precise measurement device which can realize inner ring clamping and rotation continuous measurement of the workpiece, is simple and convenient to operate, has reasonable structure and controllable cost, can drive the workpiece to continuously rotate while realizing stable clamping of the large-caliber columnar or disk-shaped workpiece, and can acquire the topography signals of each point on the surface of the workpiece in real time.
Disclosure of Invention
The invention aims to provide a testing device for precisely measuring a large-caliber columnar or disk-shaped rotary part, which can clamp and fix a large-caliber columnar or disk-shaped workpiece through a clamping assembly, drive the workpiece to realize continuous rotation through a stepping motor, and realize real-time acquisition of a workpiece surface morphology signal and a corresponding phase angle thereof through a contact displacement sensor and an encoder.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a precise measuring device for the appearance characteristics of the outer surface of a large-caliber workpiece comprises a power component A, an encoder component B, a supporting component C, a workpiece clamping component D, a sensor component E and a bottom plate F. The stepping motor 6 of the power assembly A is fixedly connected to the left front of the bottom plate F through the mounting screw group I1; the encoder bracket 13 of the encoder assembly B is fixedly connected to the leftmost middle position of the bottom plate F through a mounting screw group II 2; the bearing seat 23 of the supporting component C is fixedly connected to the middle position of the bottom plate F through a mounting screw group IV 4, the left end of the main shaft 22 of the supporting component C is fixedly connected with the encoder-main shaft connecting piece 19 of the encoder component B through a mounting screw group III 3, and the toothed belt wheel II 12 of the power component A is fixedly connected with the main shaft 22 through a key II 20 on the right side of the encoder-main shaft connecting piece 19; the workpiece clamping assembly D is positioned on the right side of the supporting assembly C and is of a cantilever structure, and a clamp shell 29 of the workpiece clamping assembly D is fixedly connected with a main shaft 22 of the supporting assembly C through a key III 25; the sensor bracket 41 of the sensor assembly E is fixedly connected to the right rear of the bottom plate F by a mounting screw group v 5. The encoder-spindle connection 19 in the encoder assembly B, the toothed pulley II 12 in the power assembly A, the spindle 22 in the support assembly C, and the clamp housing 29 in the workpiece clamping assembly D are coaxial. At the same time, the common axis is in the same horizontal plane as the axis of the displacement sensor 43 of the sensor assembly E and is perpendicular to each other.
The power assembly A consists of a stepping motor 6, a flange plate 7, a fastening screw group I8, a toothed belt wheel I9, a key I10, a toothed belt 11 and a toothed belt wheel II 12. The stepping motor 6 is fixedly connected with the flange plate 7 through a fastening screw group I8, the flange plate 7 is fixedly connected with the toothed belt wheel I9 through a key I10, and the toothed belt wheel I9 is connected with the toothed belt wheel II 12 through a toothed belt 11.
The encoder assembly B consists of an encoder bracket 13, an encoder 14, a fastening screw group II 15, a fastening screw group III 16, an elastic coupler 17, a fastening screw group IV 18 and an encoder-spindle connecting piece 19. The upper end of the encoder bracket 13 is provided with a threaded hole and a structural hole which are matched with the size of the encoder 14, the encoder 14 is fixedly connected with the encoder bracket 13 through a fastening screw group II 15, and a rotating shaft of the encoder 14 passes through the structural hole on the encoder bracket 13. The encoder 14 and the encoder spindle connection 19 are each fixedly connected to the elastic coupling 17 by means of a fastening screw group iii 16 and a fastening screw group iv 18.
The supporting component C consists of a key II 20, a bearing I21, a main shaft 22, a bearing seat 23 and a bearing II 24. The main shaft 22 is of a stepped shaft structure, the left end of the main shaft 22 is fixedly connected with the encoder assembly B through the mounting screw group III 3, and is fixedly connected with the power assembly A through the key II 20; the middle section of the main shaft 22 is in interference connection with the inner circles of the bearing I21 and the bearing II 24 and is positioned through the shaft shoulder of the main shaft 22, and the right end of the main shaft 22 is fixedly connected with the clamp shell 29 of the workpiece clamping assembly D through a key III 25; the outer circles of the bearing I21 and the bearing II 24 are in interference connection with the inner circle of the bearing seat 23, and the outer surfaces of the two bearings are respectively coplanar with the left and right outer surfaces of the bearing seat 23.
The workpiece clamping assembly D consists of a key III 25, a clamping ring 26, a thread disc 27, a top block 28, a clamp shell 29, an end cover 30, a fastening screw group V31, a claw group ID 1, a claw group II D2 and a claw group III D3. The clamping jaw group ID 1, the clamping jaw group II D2 and the clamping jaw group III D3 have the same structure, wherein the clamping jaw group ID 1 consists of an adjusting screw group I32, a return spring group I33 and a clamping jaw I34, the clamping jaw group II D2 consists of an adjusting screw group II 35, a return spring group II 36 and a clamping jaw II 37, and the clamping jaw group III D3 consists of an adjusting screw group III 38, a return spring group III 39 and a clamping jaw III 40. The outer shape of the clamp shell 29 is similar to a two-section stepped shaft, the diameter of the right end of the clamp shell 29 is larger, three claw grooves which are 120 degrees are formed in the right end face inwards, two threaded holes are formed in the outer surface of the cylinder corresponding to the positions of the claw grooves respectively, the left end of the clamp shell 29 is an slender shaft, and a key groove and a snap ring groove are formed in the tail end of the slender shaft. The clamping jaw I34, the clamping jaw II 37 and the clamping jaw III 40 have the same appearance, the right ends of the three clamping jaws are of a stepped structure, an inclined surface structure meeting the condition of avoiding friction self-locking is arranged below the left end, and two raised cylindrical structures are designed on the upper surfaces of the clamping jaws; the top block 28 is of a cylindrical structure with three convex claws on the surface, the inner surface of the top block 28 is smooth, the outer surface of the top block is threaded, the left end face is smooth, the tail ends of the three convex claws on the right side are inclined planes, and the inclination angle of the inclined planes is equal to the inclination angle of the left end of the claw I34. The reset spring group I33 of the jaw group ID 1 is arranged on a cylindrical structure above the jaw I34, the lower edge of the reset spring group I33 is contacted with the upper surface of the jaw I34, the upper edge of the reset spring group I is contacted with the lower surface of the adjusting screw group I32 arranged on the clamp shell 29, and the adjusting screw group I32 is arranged on the clamp shell 29; the reset spring group II 36 of the jaw group II D2 is arranged on a cylindrical structure above the jaw II 37, the lower edge of the reset spring group II 36 is contacted with the upper surface of the jaw II 37, the upper edge of the reset spring group II is contacted with the lower surface of the adjusting screw group II 35 arranged on the clamp shell 29, and the adjusting screw group II 35 is arranged on the clamp shell 29; the reset spring group III 39 of the jaw group II D2 is arranged on a cylindrical structure above the jaw III 40, the lower edge of the reset spring group III 39 is contacted with the upper surface of the jaw III 40, the upper edge is contacted with the lower surface of the adjusting screw group III 38 arranged on the clamp shell 29, and the adjusting screw group III 38 is arranged on the clamp shell 29; the clamping jaw I34, the clamping jaw II 37 and the clamping jaw III 40 are respectively arranged in three grooves of the clamp shell 29 and fix the position of the right end face through the end cover 30, and the end cover 30 is tightly attached to the right end face of the clamp shell 29 through the fastening screw group 31; the clamping jaw I34, the clamping jaw II 37 and the clamping jaw III 40 are all in sliding connection with the left side jacking block 28 through the left end inclined planes of the clamping jaws I, II and III. The ejector block 28 is mounted on the slender shaft of the clamp housing 29, the ejector block 28 and the slender shaft are connected in a sliding manner, and the ejector block 28 and the threaded disc 27 are connected through self threads. The right end of the screw disk 27 is in contact with the clamp housing 29, and the left end is fixed by the snap ring 26.
The sensor assembly E consists of a sensor bracket 41, a fixing clamp nut 42, a displacement sensor 43, a fixing clamp screw set I44, a sensor fixing clamp I45, a fixing clamp screw set II 46 and a sensor fixing clamp II 47. The sensor fixing clamp I45 and the sensor fixing clamp II 47 are of two semicircular structures, the two semicircular structures of the sensor fixing clamp I45 and the sensor fixing clamp II 47 are fixedly connected with the sensor bracket 41 through the fixing clamp screw group I44 and the fixing clamp screw group II 46 respectively, and the sensor fixing clamp I45 and the sensor fixing clamp II 47 are fixedly connected with the fixing clamp nut 42 through self thread structures respectively; the displacement sensor 43 is mounted on the sensor holder i 45 and the sensor holder ii 47.
The working process of the invention is as follows:
before the experiment, the workpiece to be detected is clamped on the claw of the workpiece clamping assembly D. The clamping jaw I34, the clamping jaw II 37 and the clamping jaw III 40 of the workpiece clamping assembly D are simultaneously opened through the rotary threaded disc 27, so that the outer surfaces of the three clamping jaws clamp the inner surface of a workpiece to be tested, the relative positions of the probe of the displacement sensor 43 and the workpiece to be tested are adjusted, and the probe of the displacement sensor 43 is always contacted with the surface of the workpiece to be tested in the rotary test process.
The experimental process comprises the following steps: 1) Setting the rotating speed of the stepping motor 6, the number of workpiece testing turns and the signal acquisition time of the displacement sensor 43 and the encoder 14; 2) Starting the stepping motor 6, and transmitting power to the workpiece through a flange 7-a toothed belt wheel I9-a toothed belt 11-a toothed belt wheel II 12-a main shaft 22-a clamp shell 29-a claw I34, a claw II 37 and a claw III 40-a transmission chain of the workpiece to be tested to drive the workpiece to be tested to rotate; 3) After the motor rotates stably, simultaneously starting the encoder 14 and the displacement sensor 43, and respectively acquiring workpiece corner information and workpiece surface characteristic fluctuation signals in real time; 4) And after the signal acquisition is finished, the stepping motor 6 stops running, and experimental data are stored as callable files.
After the experiment, the power supply of the testing device is turned off, the three clamping jaws of the workpiece clamping assembly D are loosened, and the tested workpiece is taken down.
The invention has the advantages that:
1. the device has simple structure, short transmission chain and smaller accumulated error compared with the traditional testing equipment; the device has flexible application scene and lower cost, can be used for detecting the surface quality of small batches of parts, can also be combined into a detection group by a plurality of parts, and is used for detecting the product qualification of a production line;
2. compared with the traditional three-jaw chuck, the workpiece clamping device designed by the invention has the advantages of fewer parts, low processing cost, convenient assembly and convenient clamping of the inner circle surface of the large-caliber disc workpiece; the workpiece clamping device disclosed by the invention has the advantages that the clamping jaws are controlled to be opened and closed by rotating the threaded disc, the operation can be performed by one hand, the operation is simple and convenient, and the resetting is flexible;
3. the test bed can finish the measurement of the external surface characteristics of various large-caliber columnar or disk-shaped workpieces, including but not limited to cycloids, ratchets, spline shafts and hexagonal prisms; by matching the rotary encoder and the displacement sensor, the real-time phase angle of the rotary workpiece and the surface characteristics of the corresponding position of the rotary workpiece can be synchronously acquired, the data post-processing process is simplified, and the workpiece detection efficiency is remarkably improved
Drawings
FIG. 1 is an isometric view of the general structure of the present invention (right forward)
FIG. 2 is an isometric view of the general structure of the present invention (left rear)
FIG. 3 is an exploded view of a part of the present invention attached to a spindle (right forward)
FIG. 4 is an isometric view of a power assembly A of the invention (right forward)
FIG. 5 is an isometric view of an encoder assembly B of the invention (right forward direction)
FIG. 6 is an exploded view (right forward) of the support assembly C of the present invention
FIG. 7 is an isometric view of a workpiece holding assembly D of the invention (right forward)
FIG. 8 is an isometric view of the clamp housing 29 of the present invention (right forward)
FIG. 9 is an isometric view of the position of the top block 28 and the jaw set ID 1, the jaw set ID 2, and the jaw set IIID 3 of the workpiece clamping assembly D (right forward direction) of the present invention
FIG. 10 is a right side view (right side) of the workpiece holding assembly D of the present invention
FIG. 11 is a cross-sectional view (forward) of a workpiece holding assembly D of the invention
FIG. 12 is an E-axis view (left forward) of the sensor assembly of the present invention
FIG. 13 is a cross-sectional view (forward) of the workpiece holding assembly D of the present invention in a free state
FIG. 14 is a cross-sectional view (forward direction) of the workpiece holding assembly D of the present invention in a clamped state
FIG. 15 is an isometric view of the invention in a clamped condition (right forward direction)
FIG. 16 is a right side view (right side) of the present invention in a state of clamping a workpiece
Wherein: A. power pack B, encoder pack C, support pack D, workpiece clamping pack D1, jaw set I D2., jaw set II D3, jaw set III E, sensor pack F, base plate 1, mounting screw set I2, mounting screw set II 3, mounting screw set III 4, mounting screw set IV 5, mounting screw set V6, stepper motor 7, flange 8, fastening screw set I9, toothed pulley I10, key I11, toothed belt 12, toothed pulley II 13, encoder bracket 14, encoder 15, fastening screw set II 16, fastening screw set III 17, resilient coupling 18, fastening screw set IV 19, encoder-spindle. Connector 20, key II 21, bearing I22, spindle 23, bearing II 25, key III 26, snap ring 27, screw plate 28, top block 29, clamp housing 30, end cap 31, set screw V32, set screw I33, set spring I34, pawl I35, set screw II 36, set spring II 37, pawl II 38, set screw III 39, set spring III 40, pawl III 41, sensor bracket 42, clamp nut 43, displacement sensor 44, set screw I45, sensor clamp I46, set clamp screw II 47, sensor clamp II
Detailed description of the preferred embodiments
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 3, the present invention is composed of a power assembly a, an encoder assembly B, a support assembly C, a workpiece clamping assembly D, a sensor assembly E, and a base plate F. The stepping motor 6 of the power assembly A is fixedly connected to the left front of the bottom plate F through the mounting screw group I1; the encoder bracket 13 of the encoder assembly B is fixedly connected to the leftmost middle position of the bottom plate F through a mounting screw group II 2; the bearing seat 23 of the supporting component C is fixedly connected to the middle position of the bottom plate F through a mounting screw group IV 4, the left end of the main shaft 22 of the supporting component C is fixedly connected with the encoder-main shaft connecting piece 19 of the encoder component B through a mounting screw group III 3, and the toothed belt wheel II 12 of the power component A is fixedly connected with the main shaft 22 through a key II 20 on the right side of the encoder-main shaft connecting piece 19; the workpiece clamping assembly D is positioned on the right side of the supporting assembly C and is of a cantilever structure, and a clamp shell 29 of the workpiece clamping assembly D is fixedly connected with the main shaft 22 of the supporting assembly C through a key III 25. The sensor bracket 41 of the sensor assembly E is fixedly connected to the right rear of the bottom plate F by a mounting screw group v 5. As shown in fig. 1 and 3, the encoder-spindle connection 19 in the encoder assembly B, the toothed pulley ii 12 in the power assembly a, the spindle 22 in the support assembly C, and the clamp housing 29 in the workpiece clamping assembly D are coaxial, and the common axis is in the same horizontal plane as and perpendicular to the axis of the displacement sensor 43 in the sensor assembly E.
As shown in fig. 4, the power assembly a is composed of a stepping motor 6, a flange 7, a fastening screw set i 8, a toothed belt wheel i 9, a key i 10, a toothed belt 11 and a toothed belt wheel ii 12. The stepping motor 6 is fixedly connected with the flange plate 7 through a fastening screw group I8, the flange plate 7 is fixedly connected with the toothed belt wheel I9 through a key I10, and the toothed belt wheel I9 is connected with the toothed belt wheel II 12 through a toothed belt 11.
As shown in fig. 5, the encoder assembly B is composed of an encoder bracket 13, an encoder 14, a set of fastening screws ii 15, a set of fastening screws iii 16, an elastic coupling 17, a set of fastening screws iv 18, and an encoder-spindle connection 19. The upper end of the encoder bracket 13 is provided with a threaded hole and a structural hole which are matched with the size of the encoder 14, the encoder 14 is fixedly connected with the encoder bracket 13 through a fastening screw group II 15, and a rotating shaft of the encoder 14 passes through the structural hole on the encoder bracket 13. The encoder 14 and the encoder spindle connection 19 are each fixedly connected to the elastic coupling 17 by means of a fastening screw group iii 16 and a fastening screw group iv 18.
As shown in fig. 6, the support assembly C is composed of a key ii 20, a bearing i 21, a spindle 22, a bearing housing 23, and a bearing ii 24. The main shaft 22 is of a stepped shaft structure, the left end of the main shaft 22 is fixedly connected with the encoder assembly B through the mounting screw group III 3, and is fixedly connected with the power assembly A through the key II 20; the middle section of the main shaft 22 is in interference connection with the inner circles of the bearing I21 and the bearing II 24 and is positioned through the shaft shoulder of the main shaft 22, and the right end of the main shaft 22 is fixedly connected with the clamp shell 29 of the workpiece clamping assembly D through a key III 25; the outer circles of the bearing I21 and the bearing II 24 are in interference connection with the inner circle of the bearing seat 23, and the outer surfaces of the two bearings are respectively coplanar with the left and right outer surfaces of the bearing seat 23.
As shown in fig. 7 to 11, the workpiece clamping assembly D is composed of a key iii 25, a snap ring 26, a screw plate 27, a top block 28, a clamp housing 29, an end cap 30, a set of fastening screws v 31, a set of jaws id 1, a set of jaws ii D2, and a set of jaws iii D3. The clamping jaw group ID 1, the clamping jaw group II D2 and the clamping jaw group III D3 have the same structure, wherein the clamping jaw group ID 1 consists of an adjusting screw group I32, a return spring group I33 and a clamping jaw I34, the clamping jaw group II D2 consists of an adjusting screw group II 35, a return spring group II 36 and a clamping jaw II 37, and the clamping jaw group III D3 consists of an adjusting screw group III 38, a return spring group III 39 and a clamping jaw III 40. As shown in fig. 8, the outer shape of the clamp housing 29 is similar to a two-section stepped shaft, the diameter of the right end of the clamp housing 29 is larger, three claw grooves which are 120 degrees each other are formed from the right end face to the inside, two threaded holes are formed in the outer surface of the cylinder corresponding to the claw grooves, the left end of the clamp housing 29 is an slender shaft, and a key groove and a snap ring groove are formed in the tail end of the slender shaft. As shown in fig. 9, the claws i 34, ii 37 and iii 40 have the same shape, the right ends of the three claws have a stepped structure, the lower part of the left end has a bevel structure meeting the condition of avoiding friction and self-locking, and the upper surfaces of the claws are designed with two raised cylindrical structures; the top block 28 is of a cylindrical structure with three convex claws on the surface, the inner surface of the top block 28 is smooth, the outer surface of the top block is threaded, the left end face is smooth, the tail ends of the three convex claws on the right side are inclined planes, and the inclination angle of the inclined planes is equal to the inclination angle of the left end of the claw I34. As shown in fig. 10, a return spring group i 33 of the jaw group id 1 is mounted on the cylindrical structure above the jaw i 34, the lower edge of the return spring group i 33 contacts the upper surface of the jaw i 34, the upper edge contacts the lower surface of an adjusting screw group i 32 mounted on the clamp housing 29, and the adjusting screw group i 32 is mounted on the clamp housing 29; the reset spring group II 36 of the jaw group II D2 is arranged on a cylindrical structure above the jaw II 37, the lower edge of the reset spring group II 36 is contacted with the upper surface of the jaw II 37, the upper edge of the reset spring group II is contacted with the lower surface of the adjusting screw group II 35 arranged on the clamp shell 29, and the adjusting screw group II 35 is arranged on the clamp shell 29; the reset spring group III 39 of the jaw group III D3 is arranged on a cylindrical structure above the jaw III 40, the lower edge of the reset spring group III 39 is contacted with the upper surface of the jaw III 40, the upper edge is contacted with the lower surface of the adjusting screw group III 38 arranged on the clamp shell 29, and the adjusting screw group III 38 is arranged on the clamp shell 29; as shown in fig. 11, the claws i 34, ii 37, iii 40 are respectively installed into the three grooves of the clamp housing 29 and fix the right end face position by the end cover 30, and the end cover 30 is tightly attached to the right end face of the clamp housing 29 by the set of fastening screws v 31; the clamping jaw I34, the clamping jaw II 37 and the clamping jaw III 40 are all in sliding connection with the left side jacking block 28 through the left end inclined planes of the clamping jaws I, II and III. The ejector block 28 is mounted on the slender shaft of the clamp housing 29, the ejector block 28 and the slender shaft are connected in a sliding manner, and the ejector block 28 and the threaded disc 27 are connected through self threads. The right end of the screw disk 27 is in contact with the clamp housing 29, and the left end is fixed by the snap ring 26.
As shown in fig. 12, the sensor assembly E is composed of a sensor bracket 41, a clamp nut 42, a displacement sensor 43, a clamp screw group i 44, a sensor clamp i 45, a clamp screw group ii 46, and a sensor clamp ii 47. The sensor fixing clamp I45 and the sensor fixing clamp II 47 are of two semicircular structures, the two semicircular structures of the sensor fixing clamp I45 and the sensor fixing clamp II 47 are fixedly connected with the sensor bracket 41 through the fixing clamp screw group I44 and the fixing clamp screw group II 46 respectively, and the sensor fixing clamp I45 and the sensor fixing clamp II 47 are fixedly connected with the fixing clamp nut 42 through self thread structures respectively; the displacement sensor 43 is mounted on the sensor holder i 45 and the sensor holder ii 47.
As shown in fig. 13 to 14, when the workpiece clamping component D is not provided with a workpiece to be tested, the three claws can be tightly attached, at the moment, the compression amount of the spring is smaller, the elasticity is weaker, and the operation is simple, convenient and flexible; when a workpiece to be measured is clamped, the threaded disc 27 is rotated to enable the top block 28 to move rightwards, the three clamping jaws are pushed to be far away from each other, so that the clamping jaws are opened, and the threaded disc 27 is stopped after the outer edges of the clamping jaws are contacted with the inner surface of the workpiece to be measured; after clamping the workpiece, the position of the top block 28 is fixed due to the mutual friction between the threads of the threaded disc 27 and the threads of the top block 28, and the relative positions of the three clamping jaws are locked, so that the workpiece can be ensured not to be loosened from the workpiece clamping assembly D in the rotation measurement process.
As shown in fig. 15, the workpiece clamping assembly D may clamp various columnar or disk parts, such as cycloidal gears, ratchet gears, and spline shafts. The torque generated by the stepping motor 6 is transmitted to a workpiece clamping assembly D through a flange 7-a toothed belt wheel I9-a toothed belt 11-a toothed belt wheel II 12-a main shaft 22-a clamp shell 29, so that a workpiece to be tested is driven to rotate; the encoder assembly B is matched with the sensor assembly E to complete real-time acquisition of workpiece corner information and workpiece surface characteristic fluctuation signals; by performing an analytical post-processing on the measurement data, the surface topography of the workpiece can be obtained.
As shown in fig. 16, before the test, the axis of the displacement sensor 43 of the sensor assembly E should be adjusted to be in the same horizontal plane as the rotation axis of the workpiece to be tested and perpendicular to each other. In the rotation process of the workpiece to be measured, the probe of the displacement sensor 43 is in real-time contact with the workpiece to be measured, so that continuous measurement of the surface characteristic signals of the workpiece to be measured is realized.
Claims (3)
1. The precise measuring device for the appearance characteristics of the outer surface of the large-caliber workpiece is characterized by comprising a power assembly (A), an encoder assembly (B), a supporting assembly (C), a workpiece clamping assembly (D), a sensor assembly (E) and a bottom plate (F); the left end of a main shaft (22) of the supporting component (C) is fixedly connected with an encoder-main shaft connecting piece (19) of the encoder component (B) through a mounting screw group III (3), and a toothed belt wheel II (12) of the power component (A) is fixedly connected with the main shaft (22) of the supporting component (C) through a key II (20) on the right side of the encoder-main shaft connecting piece (19); the clamp shell (29) of the workpiece clamping assembly (D) is fixedly connected with the main shaft (22) of the supporting assembly (C) through a key III (25); the encoder-spindle connector (19) in the encoder assembly (B), the toothed belt wheel II (12) in the power assembly (A), the spindle (22) in the supporting assembly (C) and the clamp shell (29) in the workpiece clamping assembly (D) are coaxial; at the same time, the common axis is in the same horizontal plane as the axis of the displacement sensor (43) of the sensor assembly (E) and is mutually perpendicular; the workpiece clamping assembly (D) consists of a key III (25), a clamping ring (26), a thread disc (27), a top block (28), a clamp shell (29), an end cover (30), a fastening screw group V (31), a clamping jaw group I (D1), a clamping jaw group II (D2) and a clamping jaw group III (D3); the shape of the clamp shell (29) is similar to a two-section stepped shaft, the diameter of the right end of the clamp shell (29) is larger, three claw grooves which are 120 degrees each other are formed from the right end face to the inside, the left end of the clamp shell is an slender shaft, and the tail end of the slender shaft is provided with a key groove and a clamping ring groove; the clamping jaw I (34), the clamping jaw II (37) and the clamping jaw III (40) have the same appearance, and an inclined surface structure meeting the condition of avoiding friction and self locking is arranged below the left end; the top block (28) is of a cylindrical structure with three convex claws on the surface, the inner surface of the top block (28) is smooth, the outer surface of the top block is threaded, the left end surface of the top block is smooth, and the tail ends of the three convex claws on the right side are inclined planes with the inclination angle equal to the inclination angle of the left end of the claw I (34); the reset spring group I (33) of the jaw group I (D1) is arranged on a cylindrical structure above the jaw I (34), the lower edge of the reset spring group I (33) is contacted with the upper surface of the jaw I (34), the upper edge of the reset spring group I is contacted with the lower surface of the adjusting screw group I (32) arranged on the clamp shell (29), and the adjusting screw group I (32) is arranged on the clamp shell (29); the structure composition of the jaw group II (D2) and the jaw group III (D3) is the same as that of the jaw group I (D1); the clamping jaw I (34), the clamping jaw II (37) and the clamping jaw III (40) are respectively arranged in three grooves of the clamp shell (29) and fix the position of the right end face through the end cover (30), and the end cover (30) is tightly attached to the right end face of the clamp shell (29) through the fastening screw group (31); the clamping jaw I (34), the clamping jaw II (37) and the clamping jaw III (40) are all in sliding connection with the left side ejector block (28) through the left end inclined planes of the clamping jaw I, the clamping jaw II and the clamping jaw III; the ejector block (28) is arranged on the slender shaft of the clamp shell (29), the ejector block and the slender shaft are connected in a sliding manner, and the ejector block (28) is connected with the threaded disc (27) through self threads; the right end of the threaded disc (27) is contacted with the clamp shell (29), and the left end is fixed through the clamping ring (26); the sensor assembly (E) consists of a sensor bracket (41), a fixing clamp nut (42), a displacement sensor (43), a fixing clamp screw group I (44), a sensor fixing clamp I (45), a fixing clamp screw group II (46) and a sensor fixing clamp II (47); the sensor fixing clamp I (45) and the sensor fixing clamp II (47) are of two semicircular structures, and the two semicircular structures are respectively matched and fixedly connected on the sensor bracket (41) through self thread structures and fixing clamp nuts (42); the displacement sensor (43) is arranged on the sensor fixing clamp I (45) and the sensor fixing clamp II (47).
2. The precision measuring device according to claim 1, characterized in that said workpiece holding assembly (D) is adapted to hold a plurality of cylindrical or disc-like parts.
3. The precision measuring device according to claim 2, wherein when the workpiece clamping component (D) is not provided with a workpiece to be measured, the three jaws can be closely attached, and the spring compression amount is smaller, the elasticity is weaker, and the operation is simple, convenient and flexible; in the clamping process
When a workpiece to be measured is detected, the screw thread disc (27) is rotated to enable the top block (28) to move rightwards, the three clamping jaws are pushed away from each other, so that the clamping jaws are opened,
stopping rotating the threaded disc (27) after the outer edge of the claw is contacted with the inner surface of the workpiece to be detected; the reverse operation is adopted when the workpiece is dismounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532201.0A CN114812480B (en) | 2022-05-09 | 2022-05-09 | Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532201.0A CN114812480B (en) | 2022-05-09 | 2022-05-09 | Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114812480A CN114812480A (en) | 2022-07-29 |
| CN114812480B true CN114812480B (en) | 2023-07-14 |
Family
ID=82514416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210532201.0A Active CN114812480B (en) | 2022-05-09 | 2022-05-09 | Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114812480B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209639686U (en) * | 2019-01-12 | 2019-11-15 | 吉林大学 | A kind of non-contact laser detection revolving body cross section profile pattern error device |
| CN112066886A (en) * | 2020-10-13 | 2020-12-11 | 吉林大学 | Visual guide laser non-contact precision measurement device for circumferential circulation body part size and tolerance |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB426782A (en) * | 1934-12-05 | 1935-04-09 | Marzell Harman | Improvements in and relating to three or more jawed chuck, more particularly for lathes |
| DE1552482A1 (en) * | 1966-11-10 | 1969-10-23 | Diebold Vulkan Werk W | Quick release mandrel |
| DE2446125A1 (en) * | 1974-09-27 | 1976-04-08 | Emilio Romero | Three jaw chuck for lathes - has jaws swivelling about point and worm operated with additional hydraulic clamping |
| CN102284717B (en) * | 2011-08-26 | 2012-11-28 | 无锡市德胜机械通用件有限公司 | Fast-assembly power chuck |
| CN205710409U (en) * | 2016-04-20 | 2016-11-23 | 衢州启程机械设备有限公司 | A kind of scroll chuck of air cylinder driven |
| CN208712904U (en) * | 2018-09-14 | 2019-04-09 | 扬州大学 | A kind of automatical and efficient scroll chuck based on tapered shaft |
| CN109612658A (en) * | 2018-12-24 | 2019-04-12 | 人本集团有限公司 | Detect the device of semi-rigid bearing rigidity |
| CN110142437A (en) * | 2019-06-14 | 2019-08-20 | 沈阳机床(集团)有限责任公司 | The vertical turning Special Purpose Machine for Processing of brake rim |
| CN215144811U (en) * | 2021-06-15 | 2021-12-14 | 上海彭海机械有限公司 | Three-jaw chuck |
| CN216359509U (en) * | 2021-12-14 | 2022-04-22 | 湖大海捷(湖南)工程技术研究有限公司 | Grinding machine hydraulic floating chuck headstock |
-
2022
- 2022-05-09 CN CN202210532201.0A patent/CN114812480B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209639686U (en) * | 2019-01-12 | 2019-11-15 | 吉林大学 | A kind of non-contact laser detection revolving body cross section profile pattern error device |
| CN112066886A (en) * | 2020-10-13 | 2020-12-11 | 吉林大学 | Visual guide laser non-contact precision measurement device for circumferential circulation body part size and tolerance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114812480A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5501123A (en) | Indexing apparatus | |
| US5562277A (en) | Modular vise-like workholding system | |
| US5735514A (en) | Indexing apparatus | |
| WO1983002739A1 (en) | Adjustable machining system and implement therefor | |
| CN109540032B (en) | Non-contact laser detection revolution body section profile morphology error device | |
| CN114812480B (en) | Precise measurement device for appearance characteristics of outer surface of large-caliber workpiece | |
| CN111515756B (en) | Precise fine adjustment device for on-machine measurement function integration | |
| CN110539204A (en) | drilling force detection device and detection method thereof | |
| CN109663936B (en) | special lathe equipment for processing arc sheet parts and using method thereof | |
| CN114700563A (en) | Herringbone tooth centering measuring tool and herringbone tooth machining method | |
| CN116728239B (en) | Stepped end surface polishing device for high-pressure oil pump seat | |
| CN116872108A (en) | Planet roller screw pair profiler detection platform mounting fixture | |
| CN108890568B (en) | Intelligent servo electric screwdriver | |
| CN114894128B (en) | Lead screw raceway surface waviness detection equipment | |
| CN216846888U (en) | Ultra-precise thin-wall flexible bearing ring detection device | |
| CN113465477B (en) | Combined detection tool for detecting end face tooth gradient and detection method | |
| CN113245904B (en) | Coaxiality adjusting tool and method for automatic quick-change fixture tail end tool | |
| CN214843077U (en) | Line gear machining precision detection table | |
| JPH0763503A (en) | Run-out measuring device for tooth space of gear | |
| CN114425706B (en) | Chuck clamp for crankshaft grinding head frame | |
| CN111623684A (en) | Gear milling signal groove position degree detection tool | |
| CN216770440U (en) | Automobile transfer case tooth side clearance measuring device | |
| CN213091042U (en) | Centering and clamping device for shaft torque measurement | |
| CN113977009B (en) | Precision polishing device for involute sample plate of gear with equal common normal line | |
| CN203579314U (en) | Scalable translocation jaw vice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |