CN219142225U - Vertical running-in machine of lead screw - Google Patents

Vertical running-in machine of lead screw Download PDF

Info

Publication number
CN219142225U
CN219142225U CN202222869548.2U CN202222869548U CN219142225U CN 219142225 U CN219142225 U CN 219142225U CN 202222869548 U CN202222869548 U CN 202222869548U CN 219142225 U CN219142225 U CN 219142225U
Authority
CN
China
Prior art keywords
rod
detected
screw rod
box
screw
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
Application number
CN202222869548.2U
Other languages
Chinese (zh)
Inventor
刘华昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yixing Shundu Automation Technology Co ltd
Original Assignee
Yixing Shundu Automation Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yixing Shundu Automation Technology Co ltd filed Critical Yixing Shundu Automation Technology Co ltd
Priority to CN202222869548.2U priority Critical patent/CN219142225U/en
Application granted granted Critical
Publication of CN219142225U publication Critical patent/CN219142225U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Transmission Devices (AREA)

Abstract

The utility model relates to the technical field of screw rod detection, in particular to a screw rod vertical running-in machine. The device comprises a bottom box, wherein supporting legs are arranged at the bottom of the bottom box, vertical plates are arranged on two sides of the bottom box, the tops of the two vertical plates are connected through a top plate, a screw rod to be detected is arranged between the two vertical plates, a noise detector and two sliding rails are arranged on one side of the two vertical plates, the bottom box, the top plate and the screw rod to be detected are respectively connected through a driving assembly and an adjusting assembly, and detection assemblies are arranged on the two sliding rails positioned on the same side; the driving assembly comprises a driving motor, a worm, a rotating rod, a worm wheel, a fixed frame A and a compression block A; the adjusting component comprises a telescopic rod, a fixed frame B, a compression block B and a bearing piece; the detection assembly comprises a sliding block, a fixed box, a crank, a double-threaded rod, a fixed ring, a threaded sleeve, a supporting rod, a connecting block, a connecting rod and a half transmission nut. The utility model aims to solve the technical problems of inaccurate detection and inconvenient operation, and provides a screw rod horizontal running-in machine with strong practicability.

Description

Vertical running-in machine of lead screw
Technical Field
The utility model relates to the technical field of screw rod detection, in particular to a screw rod vertical running-in machine.
Background
Ball screws are ideal products for converting rotary motion to linear motion, or vice versa.
The ball screw is a transmission element most commonly used on tool machines and precision machines, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and simultaneously has the characteristics of high precision, reversibility and high efficiency. Ball screws are widely used in various industrial equipment and precision instruments due to their small frictional resistance.
The ball screw consists of a screw, a nut, a steel ball, a pre-pressing piece, a reverser and a dust catcher, and has the function of converting rotary motion into linear motion, which is the further extension and development of the Ai Kem screw, and the important significance of the development is that the bearing is changed from sliding motion to rolling motion.
The existing screw rod needs to detect smoothness, a nut is arranged in the past, then a worker rotates the nut to listen to sound, but the mode is inaccurate, and the operation is inconvenient.
Disclosure of Invention
The utility model aims to solve the technical problems of inaccurate detection and inconvenient operation, and provides a screw rod horizontal running-in machine with strong practicability.
The technical scheme provided by the utility model is as follows: a vertical running-in machine of lead screw, its characterized in that: the device comprises a bottom box, wherein a plurality of supporting legs are arranged at the bottom of the bottom box, vertical plates are arranged on two sides of the bottom box, the tops of the two vertical plates are fixedly connected through a top plate, a screw rod to be detected is arranged between the two vertical plates, a noise detector and two sliding rails are fixedly connected to one side, close to the screw rod to be detected, of the two vertical plates, the bottom box is connected with the screw rod to be detected through a driving assembly, the top plate is connected with the screw rod to be detected through an adjusting assembly, and a detection assembly is slidably connected to the two sliding rails on the same side; the driving assembly comprises a driving motor arranged in the bottom box, a worm is arranged at the output end of the driving motor, a rotating rod penetrating through the top wall of the bottom box is arranged on one side of the worm, a worm wheel meshed with the worm is fixedly sleeved on the outer side of the rotating rod, a fixed frame A is arranged at the top end of the rotating rod, and a compression block A is arranged at the inner bottom of the fixed frame A; the adjusting component comprises a telescopic rod arranged at the bottom of the top plate, a fixed frame B is arranged at the bottom of the movable end of the telescopic rod, a compression block B is arranged in the fixed frame B, and the compression block B is rotationally connected with the top wall of the fixed frame B through a bearing piece; the detection assembly comprises a sliding block which is in sliding connection with two sliding rails on the same side, a fixing box is fixedly connected to one side of the sliding block, a crank is arranged on the front side of the fixing box, a double-threaded rod which penetrates through the front wall of the fixing box is fixedly connected to one side of the crank, a fixing ring is arranged in the middle of the double-threaded rod in a sleeved mode, threaded sleeves are sleeved on the outer sides of the double-threaded rod on the front side and the rear side of the fixing ring respectively, supporting rods which penetrate through the side walls of the fixing box are arranged on one side of the double-threaded rod, two connecting blocks are fixedly connected to one side of the threaded sleeves, two connecting blocks are connected with the supporting rods through connecting rods, and one ends, close to a screw rod to be detected, of the supporting rods are provided with half transmission nuts.
As a further improvement, the number of the supporting legs is four and distributed in a rectangular shape.
As a further improvement, two sliding rails positioned on the same side are arranged in parallel, the sliding blocks are in sliding connection with the two sliding rails, and sliding grooves for the sliding blocks to slide are formed in the two sliding rails.
As a further improvement, the bottom end of the rotating rod is provided with a bearing A, the bottom wall of the bottom box is provided with a fixing groove A for installing the bearing A, and the top wall of the bottom box is provided with a through hole A for the rotating rod to pass through.
As a further improvement, the screw rod to be detected is positioned between the compression block A and the compression block B, and anti-slip pads are arranged on the upper surface of the compression block A and the lower surface of the compression block B.
As a further improvement, one end of the double-threaded rod, which is far away from the crank, is provided with a bearing B, the rear wall of the fixed box is provided with a fixed groove B for the bearing B to be installed, the front wall of the fixed box is provided with a through hole B for the double-threaded rod to pass through, and the side wall of the fixed box is provided with a guide hole for the support rod to pass through.
As a further improvement, the connecting rod is hinged with the connecting block and the supporting rod through bolts.
As a further improvement, the double-threaded rod is connected with the two threaded sleeves through thread transmission, and the surfaces of the double-threaded rod positioned on the front side and the rear side of the fixed ring are respectively provided with positive threads and negative threads.
As a further improvement, the screw rod to be detected is connected with two half transmission nuts through screw thread transmission, the surface of the screw rod to be detected is provided with screw threads to be detected, and the surface of one side of the half transmission nuts, which is close to the screw rod to be detected, is provided with detection screw threads meshed with the screw threads to be detected.
Compared with the prior art, the utility model has the advantages that: according to the utility model, the screw rod to be detected can have a stable and balanced running state through the screw rod running-in machine, so that the noise condition is collected through the noise detection device and is compared with the standard value through the computer, and whether the smoothness of the screw rod to be detected meets the standard is determined; the detection becomes convenient, the detection accuracy is improved, and the method is very practical and has great application value and popularization value.
Drawings
FIG. 1 is a schematic view of the overall structure of a vertical running-in machine for screw rods according to the present utility model;
FIG. 2 is a schematic diagram of a driving assembly of a vertical running-in machine of a screw;
FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2 of a lead screw vertical running-in machine of the present utility model;
FIG. 4 is a schematic view of a part of the adjusting assembly of the vertical running-in machine of the screw rod of the present utility model;
fig. 5 is a top view of a detecting assembly structure of the vertical running-in machine of the screw rod.
As shown in the figure: 1. a bottom box; 2. support legs; 3. a vertical plate; 4. a top plate; 5. a screw rod to be detected; 6. a noise detector; 7. a slide rail; 8. a drive assembly; 8.1, driving a motor; 8.2, a worm; 8.3, rotating the rod; 8.4, worm wheel; 8.5, fixing the frame A;8.6, compacting the block A;8.7, bearing A; 9. an adjustment assembly; 9.1, a telescopic rod; 9.2, fixing the frame B;9.3, compacting the block B;9.4, bearing members; 10. a detection assembly; 10.1, sliding blocks; 10.2, fixing the box; 10.3, crank; 10.4, double threaded rods; 10.5, fixing ring; 10.6, a thread bush; 10.7, supporting rods; 10.8, connecting blocks; 10.9, connecting rods; 10.10, half driving nut; 10.11, bearing B;10.12, bolts; 10.13, detecting threads; 11. a sliding groove.
Detailed Description
The utility model relates to a screw rod vertical running-in machine, which is further described in detail below with reference to the accompanying drawings.
In order to solve the technical problems of inaccurate detection and inconvenient operation, a vertical running-in machine for screw rods is provided as shown in fig. 1, 2, 3, 4 and 5, and is characterized in that: the device comprises a bottom box 1, a plurality of supporting legs 2 are arranged at the bottom of the bottom box 1, vertical plates 3 are arranged on two sides of the bottom box 1, the tops of the two vertical plates 3 are fixedly connected through a top plate 4, a screw rod 5 to be detected is arranged between the two vertical plates 3, a noise detector 6 and two sliding rails 7 are fixedly connected to one side, close to the screw rod 5 to be detected, of the two vertical plates 3, the bottom box 1 is connected with the screw rod 5 to be detected through a driving assembly 8, the top plate 4 is connected with the screw rod 5 to be detected through an adjusting assembly 9, and a detection assembly 10 is slidably connected to the two sliding rails 7 on the same side; the driving assembly 8 comprises a driving motor 8.1 arranged in the bottom box 1, a worm 8.2 is arranged at the output end of the driving motor 8.1, a rotating rod 8.3 penetrating through the top wall of the bottom box 1 is arranged at one side of the worm 8.2, a worm wheel 8.4 meshed with the worm 8.2 is fixedly sleeved outside the rotating rod 8.3, a fixed frame A8.5 is arranged at the top end of the rotating rod 8.3, and a compression block A8.6 is arranged at the inner bottom of the fixed frame A8.5; the adjusting assembly 9 comprises a telescopic rod 9.1 arranged at the bottom of the top plate 4, a fixed frame B9.2 is arranged at the bottom of the movable end of the telescopic rod 9.1, a compression block B9.3 is arranged in the fixed frame B9.2, and the compression block B9.3 is rotatably connected with the top wall of the fixed frame B9.2 through a bearing piece 9.4; the detection assembly 10 comprises a sliding block 10.1 which is in sliding connection with two sliding rails 7 on the same side, a fixing box 10.2 is fixedly connected to one side of the sliding block 10.1, a crank 10.3 is arranged on the front side of the fixing box 10.2, a double-threaded rod 10.4 penetrating through the front wall of the fixing box 10.2 is fixedly connected to one side of the crank 10.3, a fixing ring 10.5 is fixedly sleeved in the middle of the double-threaded rod 10.4, threaded sleeves 10.6 are sleeved outside the double-threaded rod 10.4 on the front side and the rear side of the fixing ring 10.5, a supporting rod 10.7 penetrating through the side wall of the fixing box 10.2 is arranged on one side of the double-threaded rod 10.4, a connecting block 10.8 is fixedly connected to one side of the two threaded sleeves 10.6 close to the supporting rod 10.7, two connecting blocks 10.8 and the supporting rod 10.7 are connected through a connecting rod 10.9, and one end of the supporting rod 10.7 close to the screw 5 to be detected is provided with a half-side transmission nut 10.10.
As shown in fig. 1, the number of the supporting legs 2 is four and the supporting legs are distributed in a rectangular shape in the utility model.
As shown in fig. 1, two sliding rails 7 on the same side are arranged in parallel, the sliding blocks 10.1 are slidably connected with the two sliding rails 7, and sliding grooves 11 for sliding the sliding blocks 10.1 are formed in the two sliding rails 7.
As shown in FIG. 2, the bottom end of the rotating rod 8.3 is provided with a bearing A8.7, the bottom wall of the bottom box 1 is provided with a fixed groove A for installing the bearing A8.7, and the top wall of the bottom box 1 is provided with a through hole A for passing through the rotating rod 8.3.
In the utility model, the screw rod 5 to be detected is positioned between the compression block A8.6 and the compression block B9.3, and anti-slip pads are arranged on the upper surface of the compression block A8.6 and the lower surface of the compression block B9.3.
As shown in FIG. 5, in the utility model, a bearing B10.11 is arranged at one end of the double-threaded rod 10.4 far away from the crank 10.3, a fixing groove B for installing the bearing B10.11 is arranged on the rear wall of the fixing box 10.2, a through hole B for passing the double-threaded rod 10.4 is arranged on the front wall of the fixing box 10.2, and a guide hole for passing the supporting rod 10.7 is arranged on the side wall of the fixing box 10.2.
As shown in fig. 5, the connecting rod 10.9, the connecting block 10.8 and the supporting rod 10.7 are hinged through bolts 10.12.
As shown in fig. 5, in the present utility model, the double threaded rod 10.4 is connected with two threaded sleeves 10.6 through a threaded transmission, and the surface of the double threaded rod 10.4 located at the front and rear sides of the fixed ring 10.5 is provided with a positive thread and a negative thread respectively.
As shown in fig. 1 and 5, in the present utility model, the screw rod 5 to be detected is connected with two half transmission nuts 10.10 through screw threads, the surface of the screw rod 5 to be detected is provided with a screw thread to be detected, and the surface of one side of the two half transmission nuts 10.10, which is close to the screw rod 5 to be detected, is provided with a detection screw thread 10.13 meshed with the screw thread to be detected.
Working principle: when the utility model is implemented, firstly, the screw rod 5 to be detected is placed on the compression block A8.6 in the fixed frame A8.5, the movable end of the telescopic rod 9.1 is controlled to extend, the fixed frame B9.2 is enabled to move downwards, and the compression block B9.3 is enabled to move downwards through pressure so as to compress and fix the screw rod 5 to be detected; rotating the crank 10.3 to drive the double threaded rod 10.4 to rotate, and rotating the double threaded rod 10.4 to drive the two threaded sleeves 10.6 to slide in opposite directions, so that the two threaded sleeves 10.6 are close to each other, at the moment, the angle between the connecting rod 10.9 and the double threaded rod 10.4 is increased, so that the supporting rod 10.7 slides towards one side close to the screw rod 5 to be detected, the supporting rod 10.7 slides to drive the half transmission nut 10.10 to move so as to be attached to the screw rod 5 to be detected, and at the moment, the two half transmission nuts 10.10 are combined with one transmission nut sleeved on the screw rod 5 to be detected and are connected through thread transmission; when the screw rod 5 to be detected is detected, the driving motor 8.1 is started to drive the worm 8.2 to rotate, the worm 8.2 rotates to drive the rotating rod 8.3 to rotate through the worm wheel 8.4 meshed with the worm 8.2, the rotating rod 8.3 rotates to drive the compression block A8.6 to rotate through the fixed frame A8.5, and the screw rod 5 to be detected, the compression block A8.6 and the compression block B9.3 have larger friction force at the moment, so that the screw rod 5 to be detected is driven to rotate through the bearing piece 9.4, the screw rod 5 to be detected rotates to enable the two half transmission nuts 10.10 to slide, and the half transmission nuts 10.10 slide in the sliding grooves 11 on the sliding rail 7 by utilizing the sliding blocks 10.1 at the moment to play a role of limiting and guiding, so that the screw rod 5 to be detected can stably and uniformly run; in the sliding process of the half transmission nut 10.10 on the screw rod 5 to be detected, certain noise is generated due to the meshing friction between the screw thread to be detected and the detection screw thread 10.13, the noise detector 6 is used for detecting the sound generated when the half transmission nut 10.10 and the screw rod 5 to be detected are transmitted, data are transmitted to a computer terminal so as to facilitate the sound spectrum analysis, the computer terminal can refer to the prior art, a screw rod with good smoothness can be prepared in advance for detection before the sound spectrum analysis, and the detected sound spectrum is used as a reference; the lead screw 5 to be detected is compared and detected, whether the noise condition of the lead screw 5 to be detected is similar to that of a normal lead screw is compared through a computer, if obvious deviation occurs, the smoothness of the lead screw 5 to be detected is proved to be unqualified, otherwise, the smoothness of the lead screw 5 to be detected is proved to be in accordance with the standard, and the practicability is high.
The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (9)

1. A vertical running-in machine of lead screw, its characterized in that: the device comprises a bottom box (1), a plurality of supporting legs (2) are arranged at the bottom of the bottom box (1), vertical plates (3) are arranged on two sides of the bottom box (1), the tops of the two vertical plates (3) are fixedly connected through a top plate (4), a screw rod (5) to be detected is arranged between the two vertical plates (3), a noise detector (6) and two sliding rails (7) are fixedly connected to one side, close to the screw rod (5) to be detected, of the vertical plates (3), the bottom box (1) is connected with the screw rod (5) to be detected through a driving assembly (8), the top plate (4) is connected with the screw rod (5) to be detected through an adjusting assembly (9), and a detection assembly (10) is slidably connected to the two sliding rails (7) on the same side; the driving assembly (8) comprises a driving motor (8.1) arranged in the bottom box (1), a worm (8.2) is arranged at the output end of the driving motor (8.1), a rotating rod (8.3) penetrating through the top wall of the bottom box (1) is arranged on one side of the worm (8.2), a worm wheel (8.4) meshed with the worm (8.2) is fixedly sleeved on the outer side of the rotating rod (8.3), a fixed frame A (8.5) is arranged at the top end of the rotating rod (8.3), and a compression block A (8.6) is arranged in the bottom of the fixed frame A (8.5); the adjusting assembly (9) comprises a telescopic rod (9.1) arranged at the bottom of the top plate (4), a fixed frame B (9.2) is arranged at the bottom of the movable end of the telescopic rod (9.1), a compression block B (9.3) is arranged in the fixed frame B (9.2), and the compression block B (9.3) is rotationally connected with the top wall of the fixed frame B (9.2) through a bearing piece (9.4); the detection assembly (10) comprises a sliding block (10.1) which is in sliding connection with two sliding rails (7) on the same side, a fixed box (10.2) is fixedly connected to one side of the sliding block (10.1), a crank (10.3) is arranged on the front side of the fixed box (10.2), a double-threaded rod (10.4) penetrating through the front wall of the fixed box (10.2) is fixedly connected to one side of the crank (10.3), a fixed ring (10.5) is fixedly sleeved in the middle of the double-threaded rod (10.4), threaded sleeves (10.6) are sleeved on the outer sides of the double-threaded rod (10.4) on the front side and the rear side of the fixed ring (10.5), supporting rods (10.7) penetrating through the side walls of the fixed box (10.2) are arranged on one side of the double-threaded rod (10.4), connecting blocks (10.8) are fixedly connected to one side of each of the two supporting rods (10.6) close to the side of the fixed box (10.7), and two connecting blocks (10.8) are connected to one end of each other through the connecting rod (10.9) close to one end of each connecting rod (10.5).
2. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the number of the supporting legs (2) is four and the supporting legs are distributed in a rectangular shape.
3. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the two sliding rails (7) positioned on the same side are arranged in parallel, the sliding blocks (10.1) are in sliding connection with the two sliding rails (7), and the two sliding rails (7) are provided with sliding grooves (11) for the sliding blocks (10.1) to slide.
4. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the bottom of the rotating rod (8.3) is provided with a bearing A (8.7), the bottom wall of the bottom box (1) is provided with a fixed groove A for installing the bearing A (8.7), and the top wall of the bottom box (1) is provided with a through hole A for the rotating rod (8.3) to pass through.
5. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the screw rod (5) to be detected is positioned between the compression block A (8.6) and the compression block B (9.3), and anti-slip pads are arranged on the upper surface of the compression block A (8.6) and the lower surface of the compression block B (9.3).
6. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the double-threaded rod (10.4) is far away from one end of the crank (10.3) and is provided with a bearing B (10.11), a fixed groove B for installing the bearing B (10.11) is formed in the rear wall of the fixed box (10.2), a through hole B for the double-threaded rod (10.4) to pass through is formed in the front wall of the fixed box (10.2), and a guide hole for the supporting rod (10.7) to pass through is formed in the side wall of the fixed box (10.2).
7. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the connecting rod (10.9) is hinged with the connecting block (10.8) and the supporting rod (10.7) through bolts (10.12).
8. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the double-threaded rod (10.4) is connected with the two threaded sleeves (10.6) through threaded transmission, and the surfaces of the double-threaded rod (10.4) positioned on the front side and the rear side of the fixed ring (10.5) are respectively provided with positive threads and negative threads.
9. A vertical running-in machine for screw shafts according to claim 1, characterized in that: the screw rod (5) to be detected is connected with two half transmission nuts (10.10) through thread transmission, the surface of the screw rod (5) to be detected is provided with threads to be detected, and the two half transmission nuts (10.10) are provided with detection threads (10.13) meshed with the threads to be detected, which are close to the surface of one side of the screw rod (5) to be detected.
CN202222869548.2U 2022-10-29 2022-10-29 Vertical running-in machine of lead screw Active CN219142225U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222869548.2U CN219142225U (en) 2022-10-29 2022-10-29 Vertical running-in machine of lead screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222869548.2U CN219142225U (en) 2022-10-29 2022-10-29 Vertical running-in machine of lead screw

Publications (1)

Publication Number Publication Date
CN219142225U true CN219142225U (en) 2023-06-06

Family

ID=86562232

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222869548.2U Active CN219142225U (en) 2022-10-29 2022-10-29 Vertical running-in machine of lead screw

Country Status (1)

Country Link
CN (1) CN219142225U (en)

Similar Documents

Publication Publication Date Title
CN109141787B (en) Toughness detection device of carbon slide
CN110530637B (en) Universal test platform for dynamic performance of planetary roller screw
WO2022188899A2 (en) Peripheral self-protection impact test apparatus that is easily disassembled and assembled for gear characteristic research
CN107448571A (en) A kind of lead screw guide rails that can be slided automatically
CN219142225U (en) Vertical running-in machine of lead screw
CN108871765A (en) One kind being used for planetary roller screw pair positioning accuracy and measurement of friction torque device
CN110320025A (en) Axial load of gear box loads detection device
CN212391340U (en) Portable belleville instrument
CN219254190U (en) Pressure sensor processingequipment
CN216098785U (en) Electronic telescoping cylinder testboard
CN216348369U (en) Ball screw pair lead screw raceway profile measuring device
CN218847624U (en) Horizontal running-in machine for screw rod
CN115854817A (en) Intermediate shell thread detection device and detection method
CN206845820U (en) A kind of full-automatic packaging all-in-one machine arranges lead-screw drive mechanism
CN211401002U (en) Axle type high accuracy detecting instrument
CN209689923U (en) A kind of general run-in stand for automobile bearing detection
CN212409585U (en) Adjustable measuring head for axial clearance detector
CN212082822U (en) Rolling bearing test bed
CN211317162U (en) Accurate monitoring devices of ball screw pitch
CN210346958U (en) Ball screw pair efficiency detection device
CN217006086U (en) Verifying attachment is used in ball screw processing
CN220039344U (en) Auxiliary calibration gauge for perpendicularity of square angle square measuring surface
CN220829174U (en) Screw thread detection device
CN220488797U (en) Retainer detection tool
CN206369636U (en) The screw gear case that can be monitored in real time

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant