External thread detection device

Abstract

The utility model belongs to the field of automatic detection of parts, and particularly relates to an external thread detection device. Comprising an external thread workpiece automatic feeding mechanism; conveying the external thread workpiece to a thread ring gauge detection mechanism; the detection clamping mechanism clamps the external thread workpiece; the thread ring gauge detection mechanism detects an external thread of the external thread workpiece; the sorting judgment mechanism sorts qualified products and defective products of the external thread workpieces; according to the process of conveying the external thread workpieces to the thread ring gauge detection mechanism, axial positioning is carried out through an auxiliary positioning mechanism of the carrying mechanism, and then the carrying mechanism conveys the multiple external thread workpieces to a station of the thread ring gauge detection mechanism at a time to be detected at the same time. The external thread detection device detects external threads, is high in efficiency, reliability and detection precision, good in universality and simple in structure, can give an alarm in time when finding problems, and saves the production cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automatic detection of parts, and particularly relates to an external thread detection device. BACKGROUND

[0002] Precise shaft parts are very common parts in the mechanical industry and are also very important parts, and the shape error precision of the parts directly affects the motion performance and service life of the machinery. With the development of the mechanical industry, the requirements for the thread parts of shaft parts are higher and higher, and more and more enterprises engaged in the production of shaft parts. In order to survive in the fierce competition, the primary task is to control the product quality precision.

[0003] The external thread detection device of the prior art has the disadvantages of low efficiency, poor reliability, low detection precision, poor universality, complex structure, high cost and the like, and cannot timely alarm problems, resulting in material waste. SUMMARY

[0004] The external thread detection device is provided to solve the problems of the external thread detection device of the prior art, such as low efficiency, poor reliability, low detection precision, complex structure, poor universality, high cost and the like, and the like, and cannot timely alarm problems, resulting in material waste.

[0005] The material bin is a hopper-shaped structure with an open top surface and an inclined bottom surface.

[0006] According to the external thread detection device, the feeding mechanism comprises a feeding push rod for vertically lifting the external thread workpiece suspended in the rectangular groove, and a first air cylinder connected to one end of the feeding push rod to drive the feeding push rod to move.

[0007] The feeding mechanism further comprises an upper feeding clamping mechanism arranged at the upper part of the rectangular groove and configured to clamp the external thread workpiece.

[0008] According to the external thread detection device, the conveying mechanism comprises a fixed V-shaped plate fixed on the base and used for positioning the external thread workpiece during conveying; and a conveying V-shaped plate parallel to the fixed V-shaped plate and capable of reciprocating in the horizontal direction and the vertical direction and used for conveying the external thread workpiece; the bottom of the conveying V-shaped plate is provided with a fourteenth air cylinder used for driving the conveying V-shaped plate to reciprocate in the horizontal direction and a fifteenth air cylinder used for driving the conveying V-shaped plate to reciprocate in the vertical direction;

[0009] The conveying mechanism further comprises an auxiliary positioning mechanism arranged on the base and used for positioning the external thread workpiece in the axial direction, the auxiliary positioning mechanism comprising an auxiliary positioning push rod and a sixth air cylinder and a seventh air cylinder connected to the auxiliary positioning push rod and used for driving the auxiliary positioning push rod to reciprocate; the auxiliary positioning mechanism further comprises an auxiliary positioning plate used for positioning the two end faces of the external thread workpiece in cooperation with the auxiliary positioning push rod;

[0010] According to the external thread detection device, the measuring and clamping mechanism comprises a pressing V-shaped plate and an eighth air cylinder and a ninth air cylinder used for driving the pressing V-shaped plate to reciprocate; the pressing V-shaped plate cooperates with the fixed V-shaped plate and the conveying V-shaped plate to clamp the external thread workpiece when the external thread workpiece is detected in the thread outer diameter;

[0011] According to the external thread detection device, the thread ring gauge detection mechanism comprises a thread ring gauge and a thread ring gauge motor; the thread ring gauge is connected with a floating joint at the end, and the thread ring gauge is connected with the thread ring gauge motor through the floating joint; the thread ring gauge motor drives the thread ring gauge to rotate along the axis; the bottom of the thread ring gauge motor is provided with a sliding table; the sliding table is provided with a spring top rod mechanism; the spring top rod mechanism can drive and squeeze the sliding table to reciprocate along the axis direction of the thread ring gauge; the bottom of the sliding table is provided with a sliding rail matched with the sliding table, and the sliding rail is provided with a photoelectric switch used for detecting the moving distance of the sliding table;

[0012] According to the external thread detection device, the sorting and judging mechanism comprises a sorting gripper, an eleventh air cylinder connected to the sorting gripper and used for controlling the sorting gripper to reciprocate vertically, and a tenth air cylinder connected to the sorting gripper and used for controlling the sorting gripper to reciprocate horizontally; a qualified product tray used for placing qualified external thread workpieces and a defective product tray used for placing unqualified external thread workpieces;

[0013] The qualified product tray and the defective product tray are both fixedly arranged on the base; the qualified product tray and the defective product tray are both inclined hopper structures with one end being open.

[0014] According to the external thread detection device, the thread ring gauge motor is a torque motor.

[0015] According to the external thread detection device, the model of the thread ring gauge motor is R88M 1M40030TS2.

[0016] According to the external thread detection device, the fixed V-shaped plate and the carrying V-shaped groove plate are provided with V-shaped grooves; the V-shaped grooves on the fixed V-shaped plate and the carrying V-shaped groove plate are arranged at equal intervals; and the number of the fixed V-shaped plates is greater than or equal to 2.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. According to the external thread detection device, the external thread workpieces are transported to the thread ring gauge detection mechanism through the auxiliary positioning mechanism of the carrying mechanism for axial positioning, and then a plurality of external thread workpieces are transported to the workstations of the thread ring gauge detection mechanism for simultaneous detection through the carrying V-shaped groove plate and the fixed V-shaped plate structure of the carrying mechanism; the external thread detection automation is realized, and the device has high efficiency, good reliability, high detection precision and low cost.

[0019] 2. According to the external thread detection device, the feeding mechanism for clamping the external thread workpieces, the carrying mechanism for transporting the external thread workpieces, the measuring and clamping mechanism for clamping the external thread workpieces during measurement, and the sorting and judging mechanism for sorting the unqualified external thread workpieces all adopt the cylinder structure, and multiple cylinders are linked to improve the control precision, the detection precision and the reliability, and the measurement efficiency is greatly improved.

[0020] 3. According to the external thread detection device, multiple thread ring gauge detection mechanisms are used for simultaneous detection, high-precision torque motors and photoelectric sensors are arranged on the thread ring gauge detection mechanisms, and spring ejector mechanisms are used to play a buffering and protection role during rapid detection, so that the threads of the external thread workpieces are not damaged during detection, and the thread quality of the external thread workpieces can be obtained in time during detection, problems can be found in time, and then sorting is performed to separate defective products.

[0021] 4. According to the external thread detection device, the fixed V-shaped plate and the carrying fixed V-shaped plate are provided with V-shaped grooves; the feeding clamping mechanism is provided with clamps; the measuring and clamping mechanism is provided with a lower pressing V-shaped groove; the thread ring gauge is connected with a floating joint at the end; and the sorting and judging mechanism is provided with sorting clamps; so that the device has simple structure, good universality, and can be used for detecting external thread workpieces of different lengths, diameters and various types. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the front view of the external thread detection device of the present application.

[0023] Figure 2 is the left view of the external thread detection device of the present application.

[0024] Figure 3 is the top view of the external thread detection device of the present application.

[0025] Figure 4 is the perspective view of the external thread detection device of the present application.

[0026] Figure 5 This is a front view of the detection mechanism of the external thread detection device of the present invention.

[0027] In the diagram: 1-First cylinder, 2-Bag, 3-Second cylinder, 4-Third cylinder, 5-Fourth cylinder, 6-Fifth cylinder, 7-Sixth cylinder, 8-Seventh cylinder, 9-Eighth cylinder, 10-Ninth cylinder, 11-Fixed V-plate, 12-Tenth cylinder, 13-Eleventh cylinder, 14-Twelfth cylinder, 15-Thirteenth cylinder, 16-Qualified product tray, 17-Fourteenth cylinder, 18-Thread ring gauge, 19-Floating joint, 20-Defective product tray, 21-Transferring V-groove plate, 22-External threaded workpiece, 23-First inspection mechanism, 24-Second inspection mechanism, 100-Machine base, 200-Upper Material handling mechanism, 201-feeding push rod, 210-feeding clamping mechanism, 211-clamp, 300-transfer mechanism, 311-auxiliary positioning push rod, 312-auxiliary positioning plate, 400-thread ring gauge detection mechanism, 403-thread ring gauge motor, 404-slide table, 405-spring push rod mechanism, 406-slide rail, 407-photoelectric switch, 500-measuring clamping mechanism, 501-pressing V-groove, 600-sorting judgment mechanism, 601-sorting gripper. Detailed Implementation

[0028] Preferred Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figures 1 to 4 As shown: In this embodiment, the external thread detection device includes a base 100; the base 100 is provided with a hopper 2 for storing external thread workpieces 22, a feeding mechanism 200 for clamping external thread workpieces 22, a conveying mechanism 300 for transporting external thread workpieces 22, a thread ring gauge detection mechanism 400 for detecting the quality of the outer diameter of the external thread workpiece 22, a measuring clamping mechanism 500 for clamping the external thread workpiece 22 during measurement, and a sorting and judgment mechanism 600 for sorting out unqualified external thread workpieces 22.

[0031] The hopper 2 is a bucket-shaped structure with an open top and an inclined bottom; a rectangular groove is provided at the downward-sloping end of the bottom of the hopper 2 to suspend a single external threaded workpiece 22; the width of the hopper 2 is greater than the length of the workpiece.

[0032] The feeding mechanism 200 includes a feeding push rod 201 that vertically lifts the external threaded workpiece 22 suspended in a rectangular slot, and a first cylinder 1 connected to one end of the feeding push rod 201 to drive the feeding push rod 201 to move.

[0033] The feeding mechanism 200 also includes a feeding clamping mechanism 210 for clamping external thread workpiece 22 provided on the upper part of the rectangular slot; the feeding clamping mechanism 210 includes two clamps 211, a fourth cylinder 5 and a fifth cylinder 6 connected to the two clamps 211 respectively to control their clamping, a second cylinder 3 connected to the two clamps 211 to control their horizontal movement, and a third cylinder 4 connected to the two clamps 211 to control their vertical movement.

[0034] The conveying mechanism 300 includes a fixed V-shaped plate 11 fixedly mounted on the base 100 for positioning the external threaded workpiece 22 during conveying; and a conveying V-groove plate 21 arranged parallel to the fixed V-shaped plate 11 for reciprocating motion in both the horizontal and vertical directions for conveying the external threaded workpiece 22; the bottom of the conveying V-groove plate 21 is provided with a fourteenth cylinder 17 that drives it to reciprocate in the horizontal direction and a fifteenth cylinder that drives it to reciprocate in the vertical direction.

[0035] The conveying mechanism 300 also includes an auxiliary positioning mechanism 310 mounted on the base 100 for positioning the externally threaded workpiece 22 along its axial direction. The auxiliary positioning mechanism 310 includes an auxiliary positioning push rod 311 and a sixth cylinder 7 and a seventh cylinder 8 connected thereto to drive its reciprocating motion. The auxiliary positioning mechanism 310 also includes an auxiliary positioning plate 312, which cooperates with the auxiliary positioning push rod 311 to position the two end faces of the externally threaded workpiece 22.

[0036] The measuring clamping mechanism 500 includes a pressing V-groove 501, and an eighth cylinder 9 and a ninth cylinder 10 that drive the pressing V-groove 501 to reciprocate. The pressing V-groove 501 cooperates with the fixed V-shaped plate 11 and the conveying V-groove plate 21 to clamp the external thread workpiece 22 when the thread outer diameter of the external thread workpiece 22 is being measured.

[0037] like Figure 5 As shown: The thread ring gauge detection mechanism 400 includes: a thread ring gauge 18 and a thread ring gauge motor 403; the end of the thread ring gauge 18 is connected to a floating joint 19, and the thread ring gauge 18 is connected to the thread ring gauge motor 403 through the floating joint 19; the thread ring gauge motor 403 drives the thread ring gauge 18 to rotate along the axis; a slide table 404 is provided at the bottom of the thread ring gauge motor 403; a spring push rod mechanism 405 is provided on the slide table 404; the spring push rod mechanism 405 can drive and pull the slide table 404 to reciprocate along the axis of the thread ring gauge 18; a slide rail 406 is provided at the bottom of the slide table 404 to cooperate with it, and a photoelectric switch 407 for detecting the moving distance of the slide table 404 is provided on the slide rail 406;

[0038] The sorting judging mechanism 600 comprises: two sorting clamps 601, a twelfth cylinder 14 and a thirteenth cylinder 15 connected to the two sorting clamps 601 to control clamping of the two sorting clamps 601, an eleventh cylinder 13 connected to the sorting clamps 601 to control vertical reciprocating movement of the sorting clamps 601, and a tenth cylinder 12 connected to the sorting clamps 601 to control horizontal reciprocating movement of the sorting clamps 601; a qualified product tray 16 for placing qualified external thread workpieces 22, and an unqualified product tray 20 for placing unqualified external thread workpieces 22.

[0039] The qualified product tray 16 and the unqualified product tray 20 are both fixedly arranged on the machine base 100, and both have an open end and an inclined hopper structure.

[0040] The thread ring gauge motor 403 is a torque motor, and the model is R88M 1M40030T S2.

[0041] The fixed V-shaped plate 11 and the carrying V-shaped groove plate 21 are both provided with V-shaped grooves, the V-shaped grooves on the fixed V-shaped plate 11 and the carrying V-shaped groove plate 21 are arranged at equal intervals, and the number of the fixed V-shaped plate 11 is greater than or equal to 2.

[0042] In this embodiment, the detected external thread workpieces 22 are shaft-shaped external thread parts inside an automobile windshield wiper, and the thread specifications are m8 and m10. After the external thread workpieces 22 are placed in the hopper 2, the upper pushing rod 201 pushes the external thread workpieces 22 to below the clamping jaws 211 of the upper clamping mechanism 210, and the clamping jaws 211 successively clamp two external thread workpieces 22 and place them in adjacent V-shaped grooves of the fixed V-shaped plate 11.

[0043] After the carrying V-shaped groove plate 21 lifts the two external thread workpieces 22, the carrying V-shaped groove plate 21 moves a distance of two V-shaped grooves and then places the two external thread workpieces 22 in the V-shaped grooves of the fixed V-shaped plate 11. The lower V-shaped groove 501 of the measuring and clamping mechanism 500 is lowered to position the two external thread workpieces 22. The thread ring gauges 18 arranged on the two thread ring gauge detection mechanisms 400 are respectively aligned with the outer thread surfaces of the two external thread workpieces 22. The floating joint 19 connected to the thread ring gauges 18 functions as a buffer and eliminates errors. The thread ring gauge motor 403 drives the thread ring gauges 18 to rotate, and the sliding table 404 connected to the thread ring gauge motor 403 moves along the external thread workpieces 22 in the axial direction on the sliding rail 406.

[0044] The internal threads of the thread ring gauges 18 thread into the external threads of the external thread workpieces 22. The thread ring gauge motor 403 and the sliding table 404 are connected through the spring push rod mechanism 405. During the process of the internal threads of the thread ring gauges 18 threading into the external threads of the external thread workpieces 22, the spring push rod mechanism 405 functions as a buffer to protect the external threads of the external thread workpieces 22 from being damaged during detection.

[0045] When the thread ring gauge motor 403 is completely screwed into the outer thread of the outer threaded workpiece 22, the photoelectric switch 407 arranged on the slide rail 406 detects the movement distance of the detection slide table 404, and the thread ring gauge motor 403 rotates in the opposite direction to unscrew the outer thread of the outer threaded workpiece 22; at the same time, the slide table 404 connected with the thread ring gauge motor 403 moves in the opposite direction along the outer threaded workpiece 22 on the slide rail 406; the outer thread detection of the outer threaded workpiece 22 is completed;

[0046] When the thread ring gauge motor 403 rotates to screw into the outer thread of the outer threaded workpiece 22; if the set torque value of the thread ring gauge motor 403 is greater than the set value, it indicates that the outer thread of the outer threaded workpiece 22 is a defective product; or if the thread ring gauge motor 403 cannot screw into the outer thread of the outer threaded workpiece 22, it indicates that there is no outer thread on the outer threaded workpiece 22; the device will issue an alarm;

[0047] After the outer thread detection of the outer threaded workpiece 22 is completed, the lower V-shaped groove is lifted up; after the carrying V-shaped groove plate 21 lifts up two outer threaded workpieces 22, it is moved by a distance of two V-shaped grooves and then puts down the two outer threaded workpieces 22 into the V-shaped grooves of the fixed V-shaped plate 11; after the two sorting clamps 601 of the sorting and judging mechanism 600 clamp the outer threaded workpieces 22, according to the detection situation, the qualified products are respectively put into the qualified product tray 16; and the unqualified products are put into the defective product tray 20.

[0048] By changing the distance between the V-shaped grooves of the fixed V-shaped plate 11 and the carrying V-shaped groove plate 21, the distance moved after the carrying V-shaped groove plate 21 is lifted up once, the number of clamps 211, the number of thread ring gauge detection mechanisms, the number of lower V-shaped grooves 501, and the number of sorting clamps, the device has simple structure, good universality, and can be used for detecting outer threaded workpieces of different lengths, diameters, and various models.

[0049] The device has high automation degree, high detection efficiency, good reliability, high detection precision, good universality, simple structure, timely alarm for problems, and saves production cost.

[0050] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An external thread detection device, characterized in that The utility model provides a kind of external thread workpiece quality detection and measurement device, including base (100);Base (100) is provided with the hopper (2) of storage external thread workpiece (22), the feeding mechanism (200) of clamping external thread workpiece (22), the carrying mechanism (300) of conveying external thread workpiece (22), the thread ring gauge detection mechanism (400) of detecting external thread workpiece (22) thread outer diameter quality, the measuring clamping mechanism (500) of clamping external thread workpiece (22) in measurement, and the sorting judgment mechanism (600) of sorting unqualified external thread workpiece (22); The hopper (2) is a bucket-shaped structure with an open top surface and an inclined bottom surface; the bottom surface of the hopper (2) is inclined downward, and the end of the inclined bottom surface is provided with a rectangular groove for suspending a single external thread workpiece (22); the width of the hopper (2) is greater than the length of the workpiece.

2. An external thread detection device according to claim 1, characterized in that: The feeding mechanism (200) includes a feeding push rod (201) for vertically lifting the external thread workpiece (22) suspended in the rectangular groove, and a first cylinder (1) connected to one end of the feeding push rod (201) to drive the feeding push rod (201) to move.

3. An external thread detection device according to claim 2, characterised in that: The feeding mechanism (200) further includes a feeding clamping mechanism (210) provided at the upper part of the rectangular groove for clamping the external thread workpiece (22); the feeding clamping mechanism (210) includes two clamping jaws (211), a fourth cylinder (5) and a fifth cylinder (6) connected to the two clamping jaws (211) to control the clamping, a second cylinder (3) connected to the two clamping jaws (211) to control the horizontal movement, and a third cylinder (4) connected to the two clamping jaws (211) to control the vertical movement.

4. An external thread detection device according to claim 3, characterised in that: The carrying mechanism (300) includes a fixed V-shaped plate (11) fixedly arranged on the base (100) to position the external thread workpiece (22) during conveying, and a carrying V-groove plate (21) arranged in parallel with the fixed V-shaped plate (11) and capable of reciprocating in the horizontal direction and the vertical direction to carry the external thread workpiece (22); the bottom of the carrying V-groove plate (21) is provided with a fourteenth cylinder (17) to drive the carrying V-groove plate (21) to reciprocate in the horizontal direction and a fifteenth cylinder to drive the carrying V-groove plate (21) to reciprocate in the vertical direction. The carrying mechanism (300) further includes an auxiliary positioning mechanism (310) arranged on the base (100) to position the external thread workpiece (22) in the axial direction, the auxiliary positioning mechanism (310) includes an auxiliary positioning push rod (311), a sixth cylinder (7) and a seventh cylinder (8) connected to the auxiliary positioning push rod (311) to drive the auxiliary positioning push rod (311) to reciprocate, and an auxiliary positioning plate (312) cooperating with the auxiliary positioning push rod (311) to position the two end faces of the external thread workpiece (22).

5. An external thread detection device according to claim 4, characterised in that: The measuring clamping mechanism (500) includes a pressing V-groove (501), an eighth cylinder (9) and a ninth cylinder (10) to drive the pressing V-groove (501) to reciprocate; the pressing V-groove (501) cooperates with the fixed V-shaped plate (11) and the carrying V-groove plate (21) to clamp the external thread workpiece (22) when detecting the thread outer diameter of the external thread workpiece (22).

6. An external thread detection device according to claim 5, characterised in that: The thread ring gauge detection mechanism (400) comprises a thread ring gauge (18), a thread ring gauge motor (403), a floating joint (19) connected to the end of the thread ring gauge (18), and the thread ring gauge (18) connected to the thread ring gauge motor (403) through the floating joint (19); the thread ring gauge motor (403) drives the thread ring gauge (18) to rotate along the axis; the thread ring gauge motor (403) is provided with a sliding table (404) at the bottom; the sliding table (404) is provided with a spring push rod mechanism (405); the spring push rod mechanism (405) can drive and extrude the sliding table (404) to reciprocate along the axis direction of the thread ring gauge (18); the bottom of the sliding table (404) is provided with a sliding rail (406) matched therewith, and the sliding rail (406) is provided with a photoelectric switch (407) for detecting the moving distance of the sliding table (404).

7. An external thread detection device according to claim 5, characterized in that: The sorting judgment mechanism (600) comprises a sorting gripper (601), a cylinder connected to the sorting gripper (601) for controlling clamping, an eleventh cylinder (13) connected to the sorting gripper (601) for controlling vertical reciprocating movement, and a tenth cylinder (12) connected to the sorting gripper (601) for controlling horizontal reciprocating movement; a qualified product tray (16) for placing qualified external thread workpieces (22) and a defective product tray (20) for placing unqualified external thread workpieces (22); The qualified product tray (16) and the defective product tray (20) are both fixedly arranged on the machine base (100); the qualified product tray (16) and the defective product tray (20) are both inclined hopper structures with one end open.

8. An external thread detection device according to claim 6, characterized in that: The thread ring gauge motor (403) is a torque motor.

9. An external thread detection device according to claim 8, characterised in that: The model of the thread ring gauge motor (403) is R88M 1M40030T S2.

10. An external thread detection device according to claim 9, characterized in that: V-shaped grooves are arranged on the fixed V-shaped plate (11) and the carrying V-shaped plate (21); the V-shaped grooves on the fixed V-shaped plate (11) and the carrying V-shaped plate (21) are arranged at equal intervals; the number of the fixed V-shaped plates (11) is greater than or equal to 2.

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