CN112504120A - Screw rod measuring machine - Google Patents
Screw rod measuring machine Download PDFInfo
- Publication number
- CN112504120A CN112504120A CN202011398341.0A CN202011398341A CN112504120A CN 112504120 A CN112504120 A CN 112504120A CN 202011398341 A CN202011398341 A CN 202011398341A CN 112504120 A CN112504120 A CN 112504120A
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- Prior art keywords
- cast iron
- screw
- measuring machine
- clamping assembly
- fixed mounting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention discloses a screw measuring machine which comprises a cast iron workbench, wherein a spindle box is fixedly installed at the upper end of the cast iron workbench, a clamping assembly is rotatably installed on one side of the spindle box, a tip tailstock is fixedly installed at the upper end of the cast iron workbench, a tip is arranged on the tip tailstock, the clamping assembly is overlapped with the central axis of the tip, a servo motor is fixedly installed on the cast iron workbench, the output shaft of the servo motor is in transmission connection with the clamping assembly, an encoder is fixedly installed on the other side of the spindle box, and the rotating shaft of the encoder is coaxially and fixedly connected with the clamping assembly. The invention does not need manual measurement in the whole measuring process, realizes automation, improves the measuring efficiency and the measuring accuracy, and can finely adjust the radial position and the height of the laser measuring head, so that the device has wider measuring range and more convenient use.
Description
Technical Field
The invention relates to the technical field of machining equipment, in particular to a screw rod measuring machine.
Background
The screw rod is a cylinder with a spiral groove cut on the outer surface or a cone with a conical spiral groove cut on the outer surface, is an important part in the mechanical field, and can be used for various application occasions such as mechanical connection, mechanical transmission and the like. The screw is mainly used for plastic molding equipment, such as a plastic profile extruder, an injection molding machine and the like, and the screw and the cylinder are core components of the plastic molding equipment, are parts for heating, extruding and plasticizing and are the core of a plastic machine. The screw is widely applied to machining centers, CNC machines, numerically controlled lathes, injection molding machines, wire cutting, grinding machines, milling machines, slow-moving wires, fast-moving wires, PCB drilling machines, engraving and milling machines, spark discharge machines, gear engagement machines, planing machines, large vertical lathe planomillers and the like.
Most screws are important parts in the mechanical field and can be used for various application occasions such as mechanical connection, mechanical transmission and the like. The screw rod is required to be checked for the integrity of threads and the precision of the screw rod after being manufactured, the screw rod which meets the national standard can be normally sold and the geometric parameters of the screw rod are critical to the screw rod, the screw rod needs to be detected and measured to ensure that the geometric parameters are within an acceptable range. The existing screw detection device has low detection efficiency on the precision of the screw, and the actual requirements of the current industry on the detection and measurement of the screw cannot be met. Therefore, a screw measuring machine needs to be provided.
Disclosure of Invention
The invention aims to provide a screw rod measuring machine which is relatively high in measuring accuracy and automation degree so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a screw measuring machine comprises a cast iron workbench, wherein a spindle box is fixedly mounted at the upper end of the cast iron workbench, a clamping assembly is rotatably mounted on one side of the spindle box, a tip tailstock is fixedly mounted at the upper end of the cast iron workbench, a tip is arranged on the tip tailstock, the clamping assembly is overlapped with the central axis of the tip, a servo motor is fixedly mounted on the cast iron workbench, the output shaft of the servo motor is in transmission connection with the clamping assembly, an encoder is fixedly mounted on the other side of the spindle box, and the rotating shaft of the encoder is coaxially and fixedly connected with the clamping assembly;
the utility model discloses a laser measuring head, including cast iron workstation, lead screw motor output shaft, ball screw, transmission piece has been cup jointed on the ball screw, transmission piece upper end fixed mounting has the mounting panel, fixed mounting has the slide rail on the cast iron workstation, the slide rail is parallel with centre gripping subassembly and top axis, and the slide rail is parallel with ball screw, slidable mounting has the slider on the slide rail, mounting panel and slider sliding connection, movable mounting has the laser gauge head on the mounting panel.
Preferably, the upper end fixed mounting of cast iron workstation has the riser, inlay on the riser and be equipped with the bearing, ball screw's one end is pegged graft in the bearing.
Preferably, two groups of clamping grooves are formed in the upper end of the cast iron workbench, a fixed block is fixedly mounted at the lower end of the tip tailstock, and two ends of the fixed block are respectively inserted into the clamping grooves.
Preferably, the cast iron workbench is provided with a positioning hole, the lower end of the fixing block is fixedly provided with a positioning screw rod, one end of the positioning screw rod penetrates through the positioning hole and is located below the cast iron workbench, the positioning screw rod is provided with a locking and screwing block in a threaded manner, the upper end of the locking and screwing block is conical, the upper end of the locking and screwing block is inserted into the positioning hole, and the upper end of the locking and screwing block is in interference fit with the positioning hole.
Preferably, the headstock is provided with a cavity, a connecting shaft is rotatably mounted in the cavity through a bearing, two ends of the connecting shaft penetrate through the headstock and are located outside the headstock, one end of the connecting shaft is fixedly connected with a rotating shaft of the encoder, and the other end of the connecting shaft is fixedly connected with the clamping assembly.
Preferably, an output shaft of the servo motor is sleeved with a first synchronizing wheel, the connecting shaft is sleeved with a second synchronizing wheel, and the first synchronizing wheel and the second synchronizing wheel are connected through a synchronous belt in a transmission mode.
Preferably, the clamping assembly comprises a disc body and four groups of clamping jaws, the disc body is fixedly connected with the other end of the connecting shaft, the four groups of clamping jaws are arranged on the disc body in an annular array, and the four groups of clamping jaws are connected with the disc body in a sliding mode.
Preferably, mounting panel upper end fixed mounting has radial hand to transfer the slip table, the slip direction of radial hand transfer slip table is perpendicular with ball screw, fixed mounting has high fine setting slip table on the slide bracket of radial hand transfer slip table, the slip direction of high fine setting slip table and the upper surface of cast iron workstation are perpendicular, fixed mounting has the side dress board on the slide bracket of high fine setting slip table, laser gauge head fixed mounting is in one side of side dress board.
Preferably, the upper end fixed mounting of cast iron workstation has a connecting shaft box, lead screw motor fixed mounting is in one side of connecting shaft box, and the output shaft of lead screw motor is located connecting shaft box, the joint is fixed with the lead screw supporting seat in the connecting shaft box, ball screw runs through the lead screw supporting seat and is located connecting shaft box, the output shaft of lead screw motor passes through shaft coupling and ball screw fixed connection.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the power of the main shaft box is transmitted in a belt transmission mode, the servo motor is used for driving the test piece screw to rotate through the matching of the synchronous wheel and the synchronous belt, and the laser measuring head is driven to slide along the test piece screw through the matching of the screw motor and the ball screw to carry out measurement, so that the whole measurement process does not need manual measurement, the automation is realized, and the measurement efficiency and the measurement accuracy are improved;
2. according to the invention, through the matching of the mounting plate, the sliding block and the sliding rail and the matching of the screw motor and the ball screw, the laser measuring head can move axially along the test piece, the transmission is accurate and gapless, the bearing capacity is high, and the radial manual adjusting sliding table is arranged on the mounting plate, and the height fine adjusting sliding table is fixedly arranged on the radial manual adjusting sliding table, so that the radial position and the height of the laser measuring head can be finely adjusted, the measuring range of the device is wider, and the use is more convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a clamping assembly of the present invention;
FIG. 3 is a schematic view of a mounting plate of the present invention;
FIG. 4 is a schematic view of the coupling box of the present invention;
FIG. 5 is a schematic view of a positioning screw according to the present invention.
In the figure: 1. a cast iron workbench; 2. a main spindle box; 3. a clamping assembly; 4. a tip tailstock; 5. a servo motor; 6. an encoder; 7. a screw motor; 8. a ball screw; 9. a transmission block; 10. mounting a plate; 11. a slide rail; 12. a laser probe; 13. a vertical plate; 14. a fixed block; 15. a tip; 16. a connecting shaft; 17. a second synchronizing wheel; 18. a radial manual adjustment sliding table; 19. a shaft connecting box; 20. a screw rod supporting seat; 21. a coupling; 22. a first synchronizing wheel; 23. a claw; 24. a tray body; 25. positioning a screw rod; 26. locking and screwing the block; 27. a height fine-tuning sliding table; 28. and (6) laterally installing a plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a screw rod measuring machine comprises a cast iron workbench 1, wherein the upper end of the cast iron workbench 1 is fixedly provided with a main shaft box 2, and one side of the main shaft box 2 is rotatably provided with a clamping assembly 3;
the cast iron workbench has good flatness and high rigidity and hardness, so the cast iron workbench is selected as a building platform of the whole machine. The platform is provided with screw holes, through holes and linear grooves for installing and positioning each mechanism.
Specifically, the clamping assembly comprises a disc body 24 and four groups of clamping jaws 23, the disc body 24 is fixedly connected with the other end of the connecting shaft 16, the four groups of clamping jaws 23 are arranged on the disc body 24 in an annular array, and the four groups of clamping jaws 23 are connected with the disc body 24 in a sliding manner;
the chuck is a manual four-jaw single-action chuck for a machine tool and consists of a chuck body 4 and four jaws 23. Four lead screws are used for driving four groups of clamping jaws 23 respectively during working, so that the four-jaw chuck can be conveniently used for adjusting the center of a workpiece on a measuring machine although the common four-jaw single-action chuck does not have the function of automatic centering.
The upper end of the cast iron workbench 1 is fixedly provided with a tip tailstock 4, a tip 15 is arranged on the tip tailstock 4, and the clamping component 3 is superposed with the central axis of the tip 15;
when the tip tailstock 4 clamps the shaft parts, the tip 15 of the tip tailstock is used for tightly pushing the workpiece, so that the clamping stability is ensured. The motion of top tailstock 4 includes the removal of the tailstock body and the removal of top 15, and is specific, and two sets of joint grooves have been seted up to the upper end of cast iron workstation 1, and 4 lower extreme fixed mounting of top tailstock have fixed block 14, and the both ends of fixed block 14 are pegged graft respectively in the joint inslot.
Furthermore, a positioning hole is formed in the cast iron workbench 1, a positioning screw 25 is fixedly mounted at the lower end of the fixing block 14, one end of the positioning screw 25 penetrates through the positioning hole and is located below the cast iron workbench 1, a locking and screwing block 26 is mounted on the positioning screw 25 in a threaded manner, the upper end of the locking and screwing block 26 is conical, the upper end of the locking and screwing block 26 is inserted into the positioning hole, and the upper end of the locking and screwing block 26 is in interference fit with the positioning hole;
through the cooperation of the locking screwing block 26, the positioning screw rod 25 and the positioning hole, the position of the tip tailstock 4 can be conveniently adjusted, so that the device can measure test pieces with different lengths, the measurement range of the device is wider, and the device is more convenient to use.
A servo motor 5 is fixedly arranged on the cast iron workbench 1, and an output shaft of the servo motor 5 is in transmission connection with the clamping component 3; a first synchronizing wheel 22 is sleeved on an output shaft of the servo motor 5, a second synchronizing wheel 17 is sleeved on the connecting shaft 16, and the first synchronizing wheel 22 and the second synchronizing wheel 17 are connected through a synchronous belt in a transmission mode;
the power of the main spindle box 2 is transmitted in a belt transmission mode. The servo stepping motor is used for driving the main shaft to rotate through the matching of the synchronizing wheel and the synchronous belt, the belt transmission has the advantages of no sliding during the working of the synchronous belt, accurate transmission ratio, stable transmission, buffering, vibration reduction and low noise, and the synchronous belt has the advantages of convenience in maintenance, no need of lubrication and low maintenance cost. The servo stepping motor can accurately control the rotation angle and the rotation speed and transmit large torque through a closed-loop control system.
An encoder 6 is fixedly arranged on the other side of the spindle box 2, and a rotating shaft of the encoder 6 is coaxially and fixedly connected with the clamping assembly 3;
the encoder 6 is connected with the test piece screw rod by using the coupler 21, mechanical quantity data such as angular displacement, angular speed and the like of the rotation of the test piece screw rod are obtained for feedback, a complete closed-loop control system is formed with the servo motor 5 of the power of the main spindle box 2, and the accuracy of the rotation angle of the test piece screw rod is ensured under the working environment with high speed and high torque;
specifically, the cavity has been seted up on headstock 2, rotates through the bearing in the cavity and installs connecting axle 16, and connecting axle 16's both ends all run through headstock 2 and are located the headstock 2 outside, connecting axle 16's one end and encoder 6's axis of rotation fixed connection, connecting axle 16's the other end and centre gripping subassembly 3 fixed connection.
A screw motor 7 is fixedly installed at the upper end of the cast iron workbench 1, a ball screw 8 is fixedly connected with one end of an output shaft of the screw motor 7, a vertical plate 13 is fixedly installed at the upper end of the cast iron workbench 1, a bearing is embedded on the vertical plate 13, and one end of the ball screw 8 is inserted into the bearing;
a connecting shaft box 19 is fixedly installed at the upper end of the cast iron workbench 1, a screw motor 7 is fixedly installed at one side of the connecting shaft box 19, an output shaft of the screw motor 7 is positioned in the connecting shaft box 19, a screw support seat 20 is fixedly clamped in the connecting shaft box 19, a ball screw 8 penetrates through the screw support seat 20 and is positioned in the connecting shaft box 19, and an output shaft of the screw motor 7 is fixedly connected with the ball screw 8 through a coupler 21;
the ball screw 8 is sleeved with a transmission block 9, the upper end of the transmission block 9 is fixedly provided with a mounting plate 10, the cast iron workbench 1 is fixedly provided with a slide rail 11, the slide rail 11 is parallel to the central axes of the clamping component 3 and the tip 15, the slide rail 11 is parallel to the ball screw 8, the slide rail 11 is provided with a slide block in a sliding manner, the mounting plate 10 is connected with the slide block in a sliding manner, and the mounting plate 10 is movably provided with a laser measuring head 12.
A radial manual adjustment sliding table 18 is fixedly installed at the upper end of the installation plate 10, the sliding direction of the radial manual adjustment sliding table 18 is perpendicular to the ball screw 8, a height fine adjustment sliding table 27 is fixedly installed on a sliding platform of the radial manual adjustment sliding table 18, the sliding direction of the height fine adjustment sliding table 27 is perpendicular to the upper surface of the cast iron workbench 1, a side installation plate 28 is fixedly installed on the sliding platform of the height fine adjustment sliding table 27, and the laser measuring head 12 is fixedly installed on one side of the side installation plate 28;
the axial moving part of the test piece consists of a ball screw and a heavy linear guide rail, so that the test piece is accurate in transmission without a gap and high in bearing capacity;
the radial change adjustment of the radial manual adjustment sliding table 18 on the measurement test piece is realized, and illustratively, the radial manual adjustment sliding table 18 adopts a sliding table with the model of LWX40-L100, the stroke is 60mm, the minimum scale is 0.1mm, the size of the table surface is 40 multiplied by 40mm, and the load is 30N.
The height fine adjustment sliding table 27 is used for adjusting the height change of the axis of a measurement test piece, and exemplarily, the height fine adjustment sliding table 27 adopts a sliding table with the model of LZ40, the stroke is 10mm, the minimum scale is 0.01mm, the precision is 0.02mm, the size of a table surface is 40 multiplied by 40mm, the load is 20N, and the parallelism is 0.05 mm.
Illustratively, the laser measuring head 12 is a laser measuring head with model number of kirschner IL-065, the reference distance is 65mm, the measuring range is 55-105mm, the display resolution is 2um, and the repetition precision is 2 um.
The working principle is as follows: the power of the main spindle box 2 is transmitted in a belt transmission mode, a servo motor is used for driving a test piece screw to rotate through the matching of a synchronous wheel and a synchronous belt, and a laser measuring head 12 is driven to slide along the direction of the test piece screw through the matching of a screw motor 7 and a ball screw 8 for measurement, so that the whole measurement process does not need manual measurement, the automation is realized, and the measurement efficiency and the measurement accuracy are improved; through mounting panel 10, slider and slide rail 11's cooperation, and through lead screw motor 7 and ball screw 8's cooperation, make laser gauge head 12 can follow test piece axial displacement, the accurate zero clearance of transmission, bearing capacity is high, and through being provided with radial hand regulation slip table 18 on the mounting panel 10, fixed mounting has high fine setting slip table 27 on the slip table 18 is transferred to radial hand, make laser gauge head 12's radial position and high fine setting, make this device measuring range wider, it is more convenient to use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a screw rod measuring machine, includes cast iron workstation (1), its characterized in that: a spindle box (2) is fixedly installed at the upper end of the cast iron workbench (1), a clamping assembly (3) is rotatably installed on one side of the spindle box (2), a tip tailstock (4) is fixedly installed at the upper end of the cast iron workbench (1), a tip (15) is arranged on the tip tailstock (4), the clamping assembly (3) is overlapped with the central axis of the tip (15), a servo motor (5) is fixedly installed on the cast iron workbench (1), an output shaft of the servo motor (5) is in transmission connection with the clamping assembly (3), an encoder (6) is fixedly installed on the other side of the spindle box (2), and a rotating shaft of the encoder (6) is coaxially and fixedly connected with the clamping assembly (3);
the utility model discloses a cast iron work platform, including cast iron workstation (1), lead screw motor (7) are installed to the upper end fixed mounting of cast iron workstation (1), the one end fixedly connected with ball screw (8) of lead screw motor (7) output shaft, ball screw (8) are gone up and have been cup jointed transmission piece (9), transmission piece (9) upper end fixed mounting has mounting panel (10), fixed mounting has slide rail (11) on cast iron workstation (1), slide rail (11) are parallel with the axis of centre gripping subassembly (3) and top (15), and slide rail (11) are parallel with ball screw (8), slidable mounting has the slider on slide rail (11), mounting panel (10) and slider sliding connection, movable mounting has laser gauge head (12) on mounting panel (10).
2. A screw measuring machine according to claim 1, characterized in that: the upper end fixed mounting of cast iron workstation (1) has riser (13), inlay on riser (13) and be equipped with the bearing, the one end of ball screw (8) is pegged graft in the bearing.
3. A screw measuring machine according to claim 1, characterized in that: two groups of clamping grooves are formed in the upper end of the cast iron workbench (1), a fixed block (14) is fixedly mounted at the lower end of the tip tailstock (4), and two ends of the fixed block (14) are respectively inserted into the clamping grooves.
4. A screw measuring machine according to claim 3, characterized in that: the cast iron workbench (1) is provided with a positioning hole, the lower end of the fixing block (14) is fixedly provided with a positioning screw rod (25), one end of the positioning screw rod (25) penetrates through the positioning hole and is located below the cast iron workbench (1), a locking and screwing block (26) is installed on the positioning screw rod (25) in a threaded mode, the upper end of the locking and screwing block (26) is arranged to be conical, the upper end of the locking and screwing block (26) is inserted into the positioning hole in an inserted mode, and the upper end of the locking and screwing block (26) is in interference fit with the positioning hole.
5. A screw measuring machine according to claim 1, characterized in that: the improved spindle box is characterized in that a cavity is formed in the spindle box (2), a connecting shaft (16) is installed in the cavity in a rotating mode through a bearing, the two ends of the connecting shaft (16) penetrate through the spindle box (2) and are located on the outer side of the spindle box (2), one end of the connecting shaft (16) is fixedly connected with a rotating shaft of the encoder (6), and the other end of the connecting shaft (16) is fixedly connected with the clamping assembly (3).
6. A screw measuring machine according to claim 5, characterized in that: the output shaft of the servo motor (5) is sleeved with a first synchronizing wheel (22), the connecting shaft (16) is sleeved with a second synchronizing wheel (17), and the first synchronizing wheel (22) is connected with the second synchronizing wheel (17) through a synchronous belt in a transmission mode.
7. A screw measuring machine according to claim 6, characterized in that: the clamping assembly comprises a disc body (24) and four groups of clamping jaws (23), the disc body (24) is fixedly connected with the other end of the connecting shaft (16), the four groups of clamping jaws (23) are arranged on the disc body (24) in an annular array, and the four groups of clamping jaws (23) are all in sliding connection with the disc body (24).
8. A screw measuring machine according to claim 1, characterized in that: mounting panel (10) upper end fixed mounting has radial hand to transfer slip table (18), the slip direction of radially transferring slip table (18) by hand is perpendicular with ball screw (8), fixed mounting has high fine setting slip table (27) on the sliding platform of slip table (18) is transferred to radial hand, the slip direction of high fine setting slip table (27) and the last surface vertical of cast iron workstation (1), fixed mounting has side dress board (28) on the sliding platform of high fine setting slip table (27), laser gauge head (12) fixed mounting is in one side of side dress board (28).
9. A screw measuring machine according to claim 1, characterized in that: the utility model discloses a lead screw machine, including cast iron workstation (1), lead screw motor (7), connecting box (19), lead screw motor (7) fixed mounting are in one side of connecting box (19), and the output shaft of lead screw motor (7) is located connecting box (19), the joint is fixed with lead screw supporting seat (20) in connecting box (19), ball screw (8) run through lead screw supporting seat (20) and are located connecting box (19), the output shaft of lead screw motor (7) passes through shaft coupling (21) and ball screw (8) fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398341.0A CN112504120A (en) | 2020-12-04 | 2020-12-04 | Screw rod measuring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398341.0A CN112504120A (en) | 2020-12-04 | 2020-12-04 | Screw rod measuring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112504120A true CN112504120A (en) | 2021-03-16 |
Family
ID=74968122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011398341.0A Pending CN112504120A (en) | 2020-12-04 | 2020-12-04 | Screw rod measuring machine |
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| CN (1) | CN112504120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087972A (en) * | 2021-12-02 | 2022-02-25 | 北京理工大学 | Device for measuring shape error of long hole part |
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| CN114087972B (en) * | 2021-12-02 | 2022-11-29 | 北京理工大学 | Device for measuring shape error of long hole part |
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Application publication date: 20210316 |
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