Rapid diameter measuring device for incomplete shaft parts
By designing a fast measurement device for diameters of non-complete shaft parts including mounting frames, placement tables, main balls, measuring rods, etc., the problem of difficulty in measuring variable pitch shaft parts in traditional measurement methods is solved, and fast and accurate diameter measurement is achieved.
Patent Information
- Application Number
- CN202422146796.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The shape lines of the male and male rotors of the traditional dry vacuum pump are variable pitches, which makes it difficult for the vernier caliper to measure a complete circle when measuring the diameter of its outer circle. It requires the auxiliary measurement of external pressure blocks, which is difficult and inefficient.
A fast measuring device for diameters of non-complete shaft parts is designed, including mounting frames, placement tables, main balls, measuring rods, rulers, positioning blocks, secondary balls and limit blocks. By controlling the contact between the main ball and the secondary ball on the shaft surface of the workpiece, push the measuring rod to the maximum distance away from the placement table, use the spring force to stabilize the measuring rod, and read the value on the ruler to obtain the diameter value of the shaft.
It realizes the difficulty of measuring shaft diameters, improves measurement efficiency and accuracy, and avoids the need to use external briquets.
Smart Images
Figure CN223021155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring devices, in particular to a device for quickly measuring the diameter of incomplete shaft parts. Background Art
[0002] The machining surface of shafts often involves many related parameters that need to be coordinated with other components. Therefore, the diameter is an important parameter to measure the quality of a shaft component.
[0003] The profile of the female and male rotors of traditional dry vacuum pumps is a variable pitch, which makes it difficult to measure a complete circle with a vernier caliper when measuring the outer diameter. External pressure blocks are required to assist in the measurement, which makes the measurement difficult and inefficient.
[0004] Based on this, the utility model designs a device for quickly measuring the diameter of incomplete shaft parts to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a device for quickly measuring the diameter of incomplete shaft parts to solve the above technical problems.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a mounting frame, a placing table is fixedly provided on the mounting frame, a main ball is provided on the placing table, two placing tables are provided, and the two placing tables are located at both ends of the mounting frame; a measuring rod is slidably provided on the mounting frame, a scale is fixedly provided on the measuring rod, a positioning block is fixedly provided on one end of the measuring rod close to the placing table, a secondary ball is provided on the positioning block, a clearance groove is opened on the side of the measuring rod away from the scale, a limit block is fixedly provided on the mounting frame, and the limit block is slidably provided in the clearance groove.
[0007] By adopting the above technical solution, after the two main balls and the auxiliary balls are in contact with the shaft surface of the workpiece, the auxiliary balls push the measuring rod to the maximum distance away from the placement table. The value read on the scale is the diameter value of the shaft at that section.
[0008] Preferably, a guide block is fixedly provided on the mounting frame, a clearance hole is provided on the guide block, and the measuring rod is slidably provided in the clearance hole.
[0009] By adopting the above technical solution, the setting of the guide block makes the sliding state of the measuring rod on the mounting frame stable.
[0010] Preferably, a mounting hole and a fixing hole are provided on the guide block, the limit block is placed in the mounting hole, a fixing base is threadedly connected to the fixing hole, and the fixing base is pressed against the limit block.
[0011] By adopting the above technical solution, the arrangement of the mounting holes and the set screws makes the installation of the limit block easier.
[0012] Preferably, a guide rod is fixedly arranged in the relief groove, a spring is sleeved on the guide rod, one end of the spring is arranged on one side of the relief groove close to the positioning block, and the other end of the spring abuts against the limit block.
[0013] By adopting the above technical solution, the arrangement of the spring makes the spring push the measuring rod towards the side close to the placement table when measuring the diameter. After the two main balls and the auxiliary ball are abutted against the workpiece, the placement of the measuring rod is stable and the read value is accurate.
[0014] Preferably, four main balls are provided, and the four main balls are arranged in two groups respectively on two placement tables.
[0015] By adopting the above technical solution, two main balls are arranged on one placement table, so that when measuring and reading, when the main balls on the same placement table are arranged parallel to the axis, the measured diameter value is more accurate.
[0016] Preferably, two relief grooves are provided.
[0017] By adopting the above technical solution, the arrangement of the two relief grooves makes the sliding state of the measuring rod on the mounting bracket more stable.
[0018] In summary, the present application has the following beneficial technical effects: After the four main balls and the auxiliary ball are all in contact with the shaft surface of the workpiece by controlling the mounting bracket, the auxiliary ball pushes the measuring rod to move away from the end with the placement table until the positioning block is at the maximum distance from the placement table. The elastic force of the spring makes the state of the measuring rod stable, and the value read on the scale is the diameter value of the shaft at this cross-section, which has the advantage of simplifying the difficulty of measuring the diameter of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 Schematic diagram of the structure of the mounting bracket for this embodiment;
[0021] Figure 2 Schematic diagram of the installation of the limit block for this embodiment;
[0022] Figure 3Schematic diagram of the guiding block structure of this embodiment;
[0023] Figure 4 Schematic diagram of the measuring rod structure of this embodiment.
[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0025] 1. Mounting frame; 2. Placing table; 3. Main ball; 4. Guiding block; 5. Relief hole; 6. Measuring rod; 7. Mounting hole; 8. Set screw hole; 9. Limiting block; 10. Set screw base; 11. Scale; 12. Positioning block; 13. Auxiliary ball; 14. Relief groove; 15. Guide rod; 16. Spring. Detailed implementation manners
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0027] The following further elaborates on Figure 1 —4 for this application.
[0028] A rapid diameter measuring device for non-complete shaft parts includes a mounting frame 1.
[0029] A placing table 2 is fixedly arranged on the mounting frame 1, and two main balls 3 are arranged on the placing table 2; there are two placing tables 2, and the two placing tables 2 are located at both ends of the mounting frame 1.
[0030] A guiding block 4 is fixedly arranged on the mounting frame 1, a relief hole 5 is opened on the guiding block 4, and a measuring rod 6 is slidably arranged in the relief hole 5; a mounting hole 7 and a set screw hole 8 are opened on the guiding block 4, a limiting block 9 is placed in the mounting hole 7, and a set screw base 10 is threadedly connected to the set screw hole 8, and the set screw base 10 abuts against the limiting block 9.
[0031] A scale 11 is fixedly arranged on the measuring rod 6; a positioning block 12 is fixedly arranged at one end of the measuring rod 6 close to the placing table 2, and an auxiliary ball 13 is arranged on the positioning block 12; a relief groove 14 is opened on the side of the measuring rod 6 away from the scale 11, and the limiting block 9 is slidably arranged in the relief groove 14; a guide rod 15 is fixedly arranged in the relief groove 14, a spring 16 is sleeved on the guide rod 15, one end of the spring 16 is arranged on the side of the relief groove 14 close to the positioning block 12, and the other end of the spring 16 abuts against the limiting block 9; there are two relief grooves 14.
[0032] The implementation principle of this embodiment is as follows: When measuring the diameter of an incomplete shaft, hold the mounting bracket 1 so that the four main balls 3 are close to the surface of the shaft workpiece with the auxiliary balls 13; when the main balls 3 and the auxiliary balls 13 are in contact with the surface of the shaft workpiece, the auxiliary balls 13 push the positioning block 12 to move away from the placement table 2, causing a relative displacement between the measuring rod 6 and the guiding block 4, and the spring 16 is compressed and deformed under force; rotate the mounting bracket 1 along the axial direction of the measuring rod 6 to make the four main balls 3 and the auxiliary balls 13 contact the surface of the shaft workpiece simultaneously as much as possible. At this time, the positioning block 12 is at the position farthest from the placement table 2. By reading the value on the scale 11, the diameter value of the shaft workpiece can be obtained.
[0033] After controlling the mounting bracket 1 to make the four main balls 3 and the auxiliary balls 13 all contact the shaft surface of the workpiece, the auxiliary balls 13 push the measuring rod 6 to move away from the end where the placement table 2 is provided until the positioning block 12 is at the maximum distance from the placement table 2. The elastic force of the spring 16 makes the state of the measuring rod 6 stable. The value read on the scale 11 is the diameter value of the shaft at this cross-section, which has the advantage of simplifying the difficulty of measuring the diameter of the shaft.
[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.
[0035] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for quickly measuring the diameter of incomplete shaft parts, characterized in that: The invention comprises a mounting frame (1), wherein a placing platform (2) is fixedly arranged on the mounting frame (1), a main ball (3) is arranged on the placing platform (2), two placing platforms (2) are arranged, and the two placing platforms (2) are located at two ends of the mounting frame (1); a measuring rod (6) is slidably arranged on the mounting frame (1), a scale (11) is fixedly arranged on the measuring rod (6), a positioning block (12) is fixedly arranged on one end of the measuring rod (6) close to the placing platform (2), a secondary ball (13) is arranged on the positioning block (12), a clearance groove (14) is opened on the side of the measuring rod (6) away from the scale (11), and a limit block (9) is fixedly arranged on the mounting frame (1), and the limit block (9) is slidably arranged in the clearance groove (14).
2. The device for quickly measuring the diameter of an incomplete shaft part according to claim 1, characterized in that: A guide block (4) is fixedly arranged on the mounting frame (1), a clearance hole (5) is provided on the guide block (4), and the measuring rod (6) is slidably arranged in the clearance hole (5).
3. The device for quickly measuring the diameter of an incomplete shaft part according to claim 2, characterized in that: The guide block (4) is provided with a mounting hole (7) and a fixing hole (8); the limit block (9) is placed in the mounting hole (7); a fixing base (10) is threadedly connected to the fixing hole (8); and the fixing base (10) is pressed against the limit block (9).
4. The device for quickly measuring the diameter of an incomplete shaft part according to claim 1, characterized in that: A guide rod (15) is fixedly arranged in the clearance groove (14), and a spring (16) is sleeved on the guide rod (15). One end of the spring (16) is arranged on a side of the clearance groove (14) close to the positioning block (12), and the other end of the spring (16) abuts against the limiting block (9).
5. The device for quickly measuring the diameter of an incomplete shaft part according to claim 1, characterized in that: Four main rolling balls (3) are provided, and the four main rolling balls (3) are arranged in groups of two on two placement platforms (2).
6. The device for quickly measuring the diameter of an incomplete shaft part according to claim 1, characterized in that: The said giving way grooves (14) are provided with two.