Coaxiality detection device for tungsten steel die

Abstract

The utility model discloses a tungsten steel die coaxiality detection device, which comprises a bottom plate, a side plate, a top plate, a workbench, a dial indicator, an adjusting support, a hinge piece, a rotating plate, a lifting plate, a nut seat, a linear bearing, a rotating seat, a crank, a guide rod and a screw rod, a first through hole is formed in the middle of the workbench, and a transmission shaft is arranged in the first through hole in a penetrating manner; the transmission shaft is connected with a motor through a coupler, the motor is fixedly arranged on the bottom plate, the upper end of the coupler is connected with a chuck, and the chuck is rotationally connected to the workbench through a thrust bearing. And a workpiece is clamped in the chuck. The motor drives the chuck to rotate, so that the dial indicator detects the surface of the workpiece on a horizontal circumferential surface. And the chuck can more accurately clamp and fix the workpiece in the center. The chuck is rotationally connected to the workbench through the thrust bearing, and the chuck can be prevented from jumping up and down and shaking left and right. And the detection precision is higher. The coupler can reduce vibration conducted to the chuck by the motor.

Description

Technical Field

[0001] This utility model relates to a coaxiality detection device for tungsten carbide molds, and more particularly to its centering and anti-shaking structure, belonging to the field of testing equipment. Background Technology

[0002] Coaxiality testing devices are used to detect the coaxiality of shaft-type components. Typically, the object rotation method is used for measurement. This method is simple and commonly used, employing a rotating platform and measuring tools to determine the alignment of the object's central axis with other elements. By rotating the object and recording the measurement results, the coaxiality of the object can be determined. However, existing coaxiality testing devices have shortcomings. The workpiece clamping mechanism can wobble, jump, and make it difficult to align the workpiece's center with the fixture's center. This results in low testing accuracy and large errors. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a coaxiality detection device for tungsten carbide molds.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tungsten carbide mold coaxiality detection device, comprising a base plate, side plates, a top plate, a worktable, a dial indicator, an adjusting bracket, a hinge, a rotating plate, a lifting plate, a nut seat, a linear bearing, a rotating seat, a crank, a guide rod, and a lead screw. The two ends of the side plates are vertically connected to the base plate and the top plate, respectively. The worktable is horizontally connected to the middle of a pair of side plates. Several sets of rotating seats are provided on the top plate and the worktable, with two seats in each set. The two ends of the guide rod and the lead screw are rotatably connected to the rotating seats. The lifting plate is screwed to the lead screw via the nut seat and slidably connected to the guide rod via the linear bearing. The dial indicator is connected to the rotating plate via the adjusting bracket, and the rotating plate is hinged to the lifting plate via the hinge. A first through hole is provided in the middle of the worktable, through which a transmission shaft is installed. The transmission shaft is connected to a motor via a coupling, and the motor is fixedly mounted on the base plate. A chuck is connected to the upper end of the transmission shaft, and the chuck is rotatably connected to the worktable via a thrust bearing. The chuck holds a workpiece.

[0005] Preferably, the end of the lifting plate is connected to a rotating plate via a hinge, and the end of the adjusting bracket is inserted into the rotating plate.

[0006] Preferably, the chuck and the thrust bearing are connected by a first bolt assembly, and a ring washer is provided through the middle of the first bolt assembly, with the two ends of the ring washer abutting against the thrust bearing and the chuck, respectively.

[0007] Preferably, the thrust bearing includes an inner ring, an outer ring, a first roller assembly, a second roller assembly, and a third roller assembly. The inner ring includes a body, a cover, and several second bolt assemblies. The body is stacked on the cover and connected by several second bolt assemblies. The body has a circumferential groove. The inner wall of the outer ring is rolledly connected to the bottom of the circumferential groove through the second roller assembly. The two side walls are rolledly connected to the side walls of the circumferential groove and the side walls of the cover, respectively, through the first roller assembly and the third roller assembly. The outer ring has a third through hole, through which the first bolt assembly passes. Both the body and the cover have second through holes, through which the drive shaft passes and connects to the chuck.

[0008] Preferably, the top end of the drive shaft is fixedly connected to the bottom of the chuck via a connecting seat.

[0009] Compared with existing technologies, the advantages of this invention are as follows: By turning the crank, the lead screw rotates within the rotating seat. Since the lifting plate is screwed to the lead screw via a nut seat and slidably connected to the guide rod via a linear bearing, the rotation of the lead screw drives the lifting plate to move vertically. The dial indicator is raised and lowered via the adjusting bracket, allowing for vertical surface inspection of the workpiece. The rotating plate swings left and right relative to the lifting plate via a hinge, expanding the inspection range.

[0010] The motor drives the chuck to rotate, and the chuck, holding the workpiece, rotates in unison, allowing the dial indicator to inspect the workpiece's surface on a horizontal circumferential plane. The chuck can more precisely clamp and fix the workpiece in the center. The chuck is rotatably connected to the worktable via a thrust bearing, which prevents the chuck from jumping up and down or wobbling left and right. This results in higher inspection accuracy. The coupling reduces the vibration transmitted from the motor to the chuck. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the coaxiality detection device for tungsten carbide molds according to a preferred embodiment of the present invention;

[0012] Figure 2 A schematic diagram of the thrust bearing and chuck;

[0013] Figure 3 This is a schematic diagram of a thrust bearing.

[0014] In the diagram: 1. Base plate; 2. Side plate; 3. Top plate; 5. Worktable; 6. Motor; 7. Coupling; 8. Drive shaft; 9. First through hole; 10. Thrust bearing; 11. Chuck; 12. Workpiece; 13. Dial indicator; 14. Adjusting bracket; 15. Hinge; 16. Rotating plate; 17. Lifting plate; 18. Nut seat; 19. Linear bearing; 20. Rotating seat; 21. Handle; 22. First bolt assembly; 23. Ring washer; 24. Guide rod; 25. Lead screw; 26. Inner ring; 27. Outer ring; 28. Second through hole; 29. ​​First roller assembly; 30. Second roller assembly; 31. Third roller assembly; 32. Third through hole; 33. Body; 34. Cover; 35. Second bolt assembly; 36. Connecting seat. Detailed Implementation

[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0016] See appendix Figure 1-3 As shown, a tungsten carbide mold coaxiality detection device in this embodiment includes a base plate 1, side plates 2, top plate 3, worktable 5, dial indicator 13, adjusting bracket 14, hinge 15, rotating plate 16, lifting plate 17, nut seat 18, linear bearing 19, rotating seat 20, crank 21, guide rod 24, and lead screw 25. The two ends of the side plates 2 are vertically connected to the base plate 1 and top plate 3 respectively. The worktable 5 is horizontally connected to the middle of a pair of side plates 2. Several sets of rotating seats 20 are provided on the top plate 3 and the worktable 5, with two seats in each set. The two ends of the guide rod 24 and lead screw 25 are rotatably connected to the rotating seats 20. The lifting plate 17 is screwed to the lead screw 25 through the nut seat 18 and slidably connected to the guide rod 24 through the linear bearing 19. The dial indicator 13 is connected to the rotating plate 16 through the adjusting bracket 14. The rotating plate 16 is hinged to the lifting plate 17 through the hinge 15.

[0017] The workbench 5 has a first through hole 9 in the middle, through which a drive shaft 8 is installed. The lower end of the drive shaft 8 is connected to a coupling 7, and the lower end of the coupling 7 is connected to a motor 6. The motor 6 is fixedly installed on the base plate 1. The upper end of the drive shaft 8 is connected to a chuck 11, which is rotatably connected to the workbench 5 via a thrust bearing 10. The chuck 11 holds a workpiece 12.

[0018] The end of the lifting plate 17 is connected to the rotating plate 16 via a hinge 15, and the end of the adjusting bracket 14 is inserted into the rotating plate 16. The chuck 11 and the thrust bearing 10 are connected by a first bolt assembly 22, and a ring washer 23 is provided through the middle of the first bolt assembly 22. The two ends of the ring washer 23 abut against the thrust bearing 10 and the chuck 11, respectively. The thrust bearing 10 includes an inner ring 26, an outer ring 27, a first roller assembly 29, a second roller assembly 30, and a third roller assembly 31. The inner ring 26 includes a body 33, a cover 34, and several second bolt assemblies 35. The body 33 is stacked on the cover 34 and connected by several second bolt assemblies 35. The body 33 is provided with a circumferential groove. The inner wall of the outer ring 27 is rolledly connected to the bottom of the circumferential groove through the second roller assembly 30. The two side walls are rolledly connected to the side walls of the circumferential groove and the side walls of the cover 34 through the first roller assembly 29 and the third roller assembly 31, respectively. The outer ring 27 is provided with a third through hole 32, through which the first bolt assembly 22 passes. The body 33 and the cover 34 are both provided with second through holes 28, through which the drive shaft 8 passes and is connected to the chuck 11. The top end of the drive shaft 8 is fixedly connected to the bottom of the chuck 11 through a connecting seat 36.

[0019] In summary, the method of using the tungsten carbide mold coaxiality detection device shown in this utility model is as follows: By rotating the crank handle 21, the lead screw 25 is driven to rotate in the rotating seat 20. Since the lifting plate 17 is screwed to the lead screw 25 through the nut seat 18 and slidably connected to the guide rod 24 through the linear bearing 19, the rotation of the lead screw 25 drives the lifting plate 17 to move vertically. The dial indicator 13 is raised and lowered by adjusting the bracket 14 to detect the surface of the workpiece 12 in the vertical direction. The rotating plate 16 swings left and right relative to the lifting plate 17 through the hinge 15 to expand the detection range.

[0020] Motor 6 drives chuck 11 to rotate via motor 7. Chuck 11 clamps workpiece 12 and rotates together, allowing dial indicator 13 to inspect the surface of workpiece 12 on a horizontal circumferential surface. Chuck 11 can more precisely clamp and fix workpiece 12 in the center. Chuck 11 is rotatably connected to worktable 5 via thrust bearing 10, preventing chuck 11 from jumping up and down or wobbling left and right. This results in higher inspection accuracy. Coupling 7 reduces the vibration transmitted from motor 6 to chuck 11.

[0021] The inner ring 26 is fixedly connected to the worktable 5. The body 33 and the cover 34 are stacked to form the outer ring 27. The outer ring 27 is provided with a circumferential groove. The three sides of the outer ring 27 are rotatably connected to the circumferential groove through the first roller assembly 29, the second roller assembly 30, and the third roller assembly 31, respectively. The cover 34 covers the side of the circumferential groove, installing the first roller assembly 29, the second roller assembly 30, the third roller assembly 31, and the outer ring 27 together. The outer ring 27 bears the axial pressure through the first roller assembly 29 and the third roller assembly 31, and can also bear the radial pressure through the second roller assembly 30. It has higher precision and can overcome vertical runout and horizontal sway. The outer ring 27 is provided with a third through hole 32. The first bolt assembly 22 passes through the third through hole 32, and the outer ring 27 and the chuck 11 are rotatably connected together through the first bolt assembly 22 and the ring washer 23. The top end of the drive shaft 8 passes through the second through hole 28 and is fixedly connected to the chuck 11 via the connecting seat 36, driving the chuck 11 to rotate.

[0022] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A tungsten carbide mold coaxiality detection device, comprising a base plate (1), side plates (2), top plate (3), worktable (5), dial indicator (13), adjusting bracket (14), lifting plate (17), nut seat (18), linear bearing (19), rotating seat (20), crank (21), guide rod (24), and lead screw (25). The two ends of the side plates (2) are vertically connected to the base plate (1) and the top plate (3), respectively. The worktable (5) is horizontally connected to the middle of a pair of side plates (2). Several sets of rotating seats (20) are provided on the top plate (3) and the worktable (5), with two seats in each set. The two ends of the guide rod (24) and the lead screw (25) are rotatably connected to the rotating seats (20). The lifting plate (17) is screwed to the lead screw (25) through the nut seat (18) and slidably connected to the guide rod (24) through the linear bearing (19). The dial indicator (13) is connected to the lifting plate (17) through the adjusting bracket (14). Its features are, The workbench (5) has a first through hole (9) in the middle, through which a drive shaft (8) is installed. The lower end of the drive shaft (8) is connected to a coupling (7), and the lower end of the coupling (7) is connected to a motor (6). The motor (6) is fixedly installed on the base plate (1). The upper end of the drive shaft (8) is connected to a chuck (11), which is rotatably connected to the workbench (5) via a thrust bearing (10). The chuck (11) holds a workpiece (12).

2. The tungsten carbide mold coaxiality detection device according to claim 1, characterized in that, The end of the lifting plate (17) is connected to the rotating plate (16) via a hinge (15), and the end of the adjusting bracket (14) is inserted into the rotating plate (16).

3. The tungsten carbide mold coaxiality detection device according to claim 1, characterized in that, The chuck (11) and the thrust bearing (10) are connected by a first bolt assembly (22), and a ring washer (23) is provided through the middle of the first bolt assembly (22). The two ends of the ring washer (23) abut against the thrust bearing (10) and the chuck (11) respectively.

4. The tungsten carbide mold coaxiality detection device according to claim 3, characterized in that, The thrust bearing (10) includes an inner ring (26), an outer ring (27), a first roller assembly (29), a second roller assembly (30), and a third roller assembly (31). The inner ring (26) includes a body (33), a cover (34), and several second bolt assemblies (35). The body (33) is stacked on the cover (34) and connected by several second bolt assemblies (35). The body (33) is provided with a circumferential groove. The inner wall of the outer ring (27) is connected by several second roller assemblies (30). The outer ring (27) is provided with a third through hole (32), and the first bolt assembly (22) is connected through the third through hole (32). The body (33) and the cover (34) are respectively connected through the first roller assembly (29) and the third roller assembly (31). The outer ring (27) is provided with a third through hole (32), and the first bolt assembly (22) is connected through the third through hole (32). The body (33) and the cover (34) are both provided with a second through hole (28), and the drive shaft (8) is connected through the second through hole (28) to the chuck (11).

5. The tungsten carbide mold coaxiality detection device according to claim 1, characterized in that, The top end of the drive shaft (8) is fixedly connected to the bottom of the chuck (11) via a connecting seat (36).

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