Large-size internal thread verticality detection tool
By designing a large-size internal thread verticality detection tool consisting of columns, swing bodies, screws, guide studs, pinch studs, main rods, secondary rods and dial meters, the problem of internal thread verticality detection after processing of large components is solved, and a high-precision, simple operation and strong versatility detection effect is achieved.
Patent Information
- Application Number
- CN202420868066.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-25
AI Technical Summary
At this stage, there is a lack of reliable and high-precision detection tools to detect the verticality of large-sized internal threads after processing of large components.
A large-size internal thread verticality detection tool consisting of columns, slewing bodies, screws, guide studs, top-tight studs, main rods, secondary rods and dial meters is designed. This tool achieves accurate positioning and compression of the internal thread axis through the coordination of the guide stud and the pinch stud. The dial table records the value change in the rotation for one week, and completes the verticality detection.
It realizes high-precision detection of the verticality of large-size internal threads, which is simple to operate, strong versatility, and low cost. It can adapt to the detection of internal threads of different sizes and specifications, solving the problem of detection of internal threads after processing of large components.
Smart Images
Figure CN222617828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of water turbines, and in particular to a large-size internal thread verticality detection tool. Background Art
[0002] The large-size internal threads on the handle plane of large parts are usually aligned according to the handle plane, and the internal threads are milled out after the bottom hole is processed by a large CNC boring machine. At present, there is no reliable and high-precision detection tool for the verticality of the internal threads on the handle plane and the handle plane after the large parts are processed and lifted off the machine tool.
[0003] Therefore, in order to solve the above problems, it is necessary to propose a large-size internal thread verticality detection tool. Summary of the invention
[0004] The purpose of the utility model is to provide a large-size internal thread verticality detection tool with low cost, strong versatility, high efficiency and high precision. The technical scheme is: it consists of a column, a rotating body, a screw, a guide stud, a tightening stud, a main rod, a secondary rod and a dial indicator. The rotating body is installed above the column, the column is fixed on the guide stud by a screw, the guide stud is screwed into the lower side of the internal thread to be detected, the tightening stud is screwed into the upper side of the internal thread to be detected and the guide stud is pressed into the internal thread hole to be detected, the main rod is fixed to the rotating body, a dial indicator is installed at one end of the secondary rod, and the other end of the secondary rod is fixed to the main rod, and the measuring rod head of the dial indicator is pressed on the plane of the handle.
[0005] The rotating body can perform a centered rotating motion around the axis of the column without axial movement.
[0006] The column and the guide stud are fixed with four screws evenly distributed along the circumferential direction; the axis of the column is coaxial with the first external thread of the guide stud.
[0007] The upright column is provided with a flat plate, and the height position of the flat plate is higher than the handle joint plane.
[0008] The height of the first external thread of the guide stud is three quarters of the depth of the internal thread to be detected.
[0009] The second upper end surface of the tightening stud is provided with a disassembly hole, and eight disassembly holes are evenly distributed along the circumferential direction.
[0010] The guide stud and the tightening stud are made of the same round steel and are processed on a horizontal car to form a first external thread of the guide stud and a second external thread of the tightening stud.
[0011] The first upper end surface of the guide stud is perpendicular to the first external thread of the guide stud; the lower end surface of the tightening stud is a spherical surface and is perpendicular to the second external thread of the tightening stud; the height of the second external thread of the tightening stud is one quarter of the depth of the internal thread to be detected.
[0012] The main rod is perpendicular to the axis of the column, and the main rod and the rotating body are fixed by threaded connection.
[0013] The position of the dial indicator can be adjusted in the up and down directions; before the auxiliary rod is fixed to the main rod, the auxiliary rod can move left and right along the axis of the main rod.
[0014] Technical Effects
[0015] 1. When the size of the internal thread to be tested changes, only the guide stud, the tightening stud and the main rod of the corresponding length need to be replaced. The column, the rotating body, etc. do not need to be replaced. It has strong versatility and low cost.
[0016] 2. A disassembly hole is provided on the upper end surface of the tightening stud, which is convenient for tightening the guide stud and removing the tightening stud; a flat is provided on the column to realize efficient and convenient screwing of the guide stud into and removal of the internal thread to be tested.
[0017] 3. The lower end face of the tightening stud and the upper end face of the guide stud are in uniform circumferential contact and are in line contact. The tightening stud only presses the guide stud along the axial direction of the internal thread to be tested, and will not correct the inclination of the guide stud axis caused by the non-vertical internal thread to be tested, thereby ensuring the authenticity of the measurement data.
[0018] 4. The axis of the internal thread to be tested is coaxially guided to the top of the handle plane through the guide studs and columns, which is convenient for operation and accurate measurement.
[0019] 5. Move the main rod to drive the auxiliary rod and the dial indicator to rotate around the column axis coaxial with the internal thread to be tested through the rotating body, and record the change in the percentage value to complete the verticality test of the internal thread to be tested. The operation is simple and the measurement accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is the structural diagram of the large-size internal thread verticality detection tool.
[0021] Figure 2 This is the AA section view of the structure diagram of the large-size internal thread verticality detection tool.
[0022] Explanation of the numbers in the figure: 1-column; 2-rotating body; 3-screw; 4-guide stud; 5-tightening stud; 6-main rod; 7-auxiliary rod; 8-dial indicator; 9-first external thread; 10-flat; 11-handle plane; 12-second upper end face; 13-disassembly hole; 14-second external thread; 15-lower end face; 16-measuring rod head; 17-second upper end face. DETAILED DESCRIPTION
[0023] like Figure 1 , Figure 2As shown, the utility model is composed of a column 1, a rotating body 2, a screw 3, a guide stud 4, a tightening stud 5, a main rod 6, a secondary rod 7, and a dial indicator 8. The rotating body 2 is installed above the column 1, and the column 1 is fixed to the guide stud 4 by the screw 3, the guide stud 4 is screwed into the lower side of the internal thread to be detected, the tightening stud 5 is screwed into the upper side of the internal thread to be detected and presses the guide stud 4 into the internal thread hole to be detected, the main rod 6 is fixed to the rotating body 2, the dial indicator 8 is installed at one end of the secondary rod 7, and the other end of the secondary rod 7 is fixed to the main rod 6, and the measuring rod head 16 of the dial indicator 8 is pressed on the joint plane 11. The main rod 6 is moved to drive the auxiliary rod 7 and the dial indicator 8 to rotate around the axis of the column 1 through the rotating body 2. The change in the indication of the dial indicator 8 after one rotation can complete the verticality detection of the internal thread to be detected. The detection is accurate and convenient, and solves the problem that the verticality of the internal thread cannot be accurately detected after the large-size internal thread is processed, especially after the large parts are lifted out of the machining position.
[0024] The rotating body 2 can perform a centered rotating motion around the axis of the column 1 without axial movement, thereby ensuring that the measurement data of the dial indicator is stable and reliable.
[0025] The column 1 and the guide stud 4 are fixed with four screws 3 evenly distributed along the circumferential direction, so that the column 1 and the guide stud 4 are fixed as a detachable structure. When the size specification of the internal thread to be detected changes, only the guide stud 4 needs to be replaced accordingly. The column 1, the rotating body 2, etc. can be used multiple times, thereby achieving the purpose of reducing costs.
[0026] The axis of the column 1 is coaxial with the first external thread 9 of the guide stud 4, so that the axis of the guide stud 4 can be guided to the top of the handle plane 11 through the column 1, which is convenient for operation and measurement.
[0027] The column 1 is provided with a flat 10, and the height position of the flat 10 is higher than the engagement plane 11, so that the guide stud 4 can be screwed into and removed from the internal thread to be tested efficiently and conveniently.
[0028] The height of the first external thread 9 of the guide stud 4 is three quarters of the depth of the internal thread to be detected. After being screwed in, the axis of the guide stud can accurately reflect the verticality of the internal thread to be detected.
[0029] The second upper end surface 12 of the tightening stud 5 is provided with a disassembly hole 13, and eight disassembly holes 13 are evenly distributed along the circumference. The tightening stud 5 and the guide stud 4 can be fastened against each other in the internal thread to be tested. During the test, the first external thread 9 of the guide stud 4 and the internal thread to be tested are in a compressed state, eliminating the fitting clearance and ensuring the accuracy of the measurement.
[0030] The guide stud 4 and the tightening stud 5 are made of the same round steel and are processed on a horizontal car to form a first external thread 9 of the guide stud 4 and a second external thread 14 of the tightening stud 5, thereby ensuring that the first external thread 9 of the guide stud 4 and the second external thread 14 of the tightening stud 5 have the same precision and avoiding inaccurate measurement results caused by precision deviation.
[0031] The first upper end face 17 of the guide stud 4 is perpendicular to the first external thread 9 of the guide stud 4, the lower end face 15 of the tightening stud 5 is spherical and perpendicular to the second external thread 14 of the tightening stud 5, and the height of the second external thread 14 of the tightening stud 5 is one-fourth of the depth of the internal thread to be detected. When the tightening stud 5 is tightened, the lower end face 15 of the tightening stud 5 and the first upper end face 17 of the guide stud 4 are in uniform and linear contact. The tightening stud 5 only presses the guide stud 4 along the axial direction of the internal thread to be detected, and will not correct the inclination of the axis of the guide stud 4 caused by the non-vertical internal thread to be detected, thereby ensuring the authenticity of the measurement data.
[0032] The main rod 6 is perpendicular to the axis of the column 1, and the main rod 6 is fixed to the rotating body 2 by threaded connection, which makes it easy to replace the main rod 6 of corresponding length according to the size of the internal thread to be detected, thereby improving versatility.
[0033] The position of the dial indicator 8 can be adjusted in the up and down direction; before the auxiliary rod 7 is fixed to the main rod 6, the auxiliary rod 7 can move left and right along the axis of the main rod 6.
[0034] The above shows and describes the basic principle, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the claims and their equivalents.
Claims
1. A large-size internal thread verticality detection tool, characterized by: The invention comprises a column (1), a rotating body (2), a screw (3), a guide stud (4), a tightening stud (5), a main rod (6), a secondary rod (7), and a dial indicator (8). The rotating body (2) is installed above the column (1). The column (1) is fixed to the guide stud (4) by means of a screw (3). The guide stud (4) is screwed into the lower side of the internal thread to be detected. The tightening stud (5) is screwed into the upper side of the internal thread to be detected and presses the guide stud (4) into the internal thread hole to be detected. The main rod (6) is fixed to the rotating body (2). The dial indicator (8) is installed at one end of the secondary rod (7). The other end of the secondary rod (7) is fixed to the main rod (6). The measuring rod head (16) of the dial indicator (8) is pressed against the joint plane (11).
2. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The rotating body (2) is centered around the axis of the column (1) and has no axial movement.
3. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The column (1) and the guide stud (4) are fixed with four screws (3) evenly distributed along the circumferential direction; the axis of the column (1) is coaxial with the first external thread (9) of the guide stud (4).
4. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The upright column (1) is provided with a flat plate (10), and the height of the flat plate (10) is higher than the handle plane (11).
5. The large-size internal thread verticality detection tool according to claim 1 is characterized by: The height of the first external thread (9) of the guide stud (4) is three quarters of the depth of the internal thread to be detected.
6. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The second upper end surface (12) of the tightening stud (5) is provided with a disassembly hole (13), and eight disassembly holes (13) are evenly distributed along the circumferential direction.
7. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The guide stud (4) and the tightening stud (5) are made of the same round steel and are processed on a horizontal carriage to form a first external thread (9) of the guide stud (4) and a second external thread (14) of the tightening stud (5).
8. The large-size internal thread verticality detection tool according to claim 1 is characterized by: The first upper end surface (17) of the guide stud (4) is perpendicular to the first external thread (9) of the guide stud (4); the lower end surface (15) of the tightening stud (5) is a spherical surface and is perpendicular to the second external thread (14) of the tightening stud (5); the height of the second external thread (14) of the tightening stud (5) is one quarter of the depth of the internal thread to be detected.
9. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The main rod (6) is perpendicular to the axis of the column (1), and the main rod (6) and the rotating body (2) are fixed by threaded connection.
10. A large-size internal thread verticality detection tool according to claim 1, characterized in that: The position of the dial indicator (8) is adjusted in the up-down direction; before the auxiliary rod (7) is fixed to the main rod (6), the auxiliary rod (7) moves left and right along the axis of the main rod (6).