Micrometer for accurately measuring inner diameter of sleeve

Abstract

The utility model discloses a micrometer for accurately measuring the inner diameter of a sleeve. The micrometer for accurately measuring the inner diameter of the sleeve comprises a micrometer mechanism and a fixing assembly, the micrometer mechanism is connected to the interior of a fixing disc in a penetrating mode, a hinge sleeve is fixedly connected to the outer side of the fixing disc in a welding mode, a movable bolt is connected to the interior of the hinge sleeve in a penetrating mode, and the movable bolt is connected to the interior of the hinge sleeve through a supporting fixing rod. The sleeve part is stably placed in the middle of the measuring equipment, measuring errors caused by movement of the sleeve part are avoided, the clamping bent plate is fixed, it is guaranteed that the measuring equipment makes full contact with the surface of the sleeve part, the sleeve part is prevented from moving in the measuring process, and therefore the measuring accuracy and stability are guaranteed, and the measuring efficiency is improved. The sleeve part can be prevented from moving due to factors such as interaction force between a measuring instrument and a measured object or improper force applied by a hand during measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of micrometers for accurately measuring the inner diameter of a sleeve, in particular to a micrometer for accurately measuring the inner diameter of a sleeve. Background Art

[0002] The micrometer that accurately measures the inner diameter of the sleeve is a field closely related to industrial manufacturing and quality control. Sleeves are usually used for the installation and matching of bearings, shafts and other mechanical parts. The accurate measurement of their inner diameter is crucial to ensure the quality and performance of the parts. By inserting the micrometer into the sleeve and reading the cursor position through the dial, the size of the sleeve inner diameter can be measured.

[0003] The prior art discloses a technical solution for a novel inside diameter measuring device, including a diameter gauge, a fixed-length conversion rod, a micrometer side head and a fixing nut. The measuring end of the inside diameter gauge is connected to the fixed-length conversion rod, which is fixed at a position relative to the measuring head of the inside diameter gauge. The fixed-length conversion rod includes a sleeve and a fixed-length rod. The inner wall of the sleeve is provided with an internal thread, and the outer wall of one end of the fixed-length rod is provided with an external thread. The threaded end of the fixed-length rod is screwed into the sleeve, and the fixing nut is screwed on the fixed-length rod. The fixing nut is used to fix the screw-in position of the fixed-length rod. The free end of the fixed-length rod is fixed with a micrometer detection head. The measuring gauge of the inside diameter gauge is a micrometer.

[0004] In this scheme, since the micrometer measures the inner diameter of the sleeve, the interaction force between the measuring instrument and the object being measured, or inappropriate force applied by the hand during measurement, the sleeve part may move during the measurement process, affecting the accuracy of the measurement result.

[0005] Therefore, it is necessary to provide a micrometer for accurately measuring the inner diameter of the sleeve to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a micrometer for accurately measuring the inner diameter of a sleeve, which can fix the micrometer and the measured sleeve part through a fixing device to reduce movement during measurement.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A micrometer for accurately measuring the inner diameter of a sleeve comprises: a micrometer mechanism and a fixing assembly, wherein the micrometer mechanism is connected to the inside of a fixed disc by penetrating, the outer side of the fixed disc is connected and fixed by welding to a hinge sleeve, a movable bolt is connected to the inside of the hinge sleeve by penetrating, the movable bolt connects and fixes a first support fixing rod, a second support fixing rod and a third support fixing rod by welding, the first support fixing rod, the second support fixing rod and the third support fixing rod connect and fix a fixed clamping curved plate by welding, the first support fixing rod, the second support fixing rod and the third support fixing rod are installed with a first connecting rod, a second connecting rod and a third connecting rod at the inner side ends, the first connecting rod, the second connecting rod and the third connecting rod are connected to the inside of a fixed block by a movable bolt, the fixed block connects and fixes a moving disc by welding, a threaded screw is connected to the inside of the moving disc by penetrating, the upper end of the threaded screw is connected and fixed to an electric motor by bolts, the electric motor is connected and fixed to a fixed disc by bolts, the fixed clamping curved plate contacts and fixes a sleeve part, and a micrometer mechanism assembly is inserted and placed inside the sleeve part.

[0009] Preferably, the first connecting rod, the second connecting rod and one end of the third connecting rod are connected and fixed with a sliding block by welding, and the sliding block is installed inside the first supporting fixing rod, the second supporting fixing rod and the third supporting fixing rod, and a movable groove is opened inside the first supporting fixing rod, the second supporting fixing rod and the third supporting fixing rod.

[0010] Preferably, one side end of the first supporting and fixing rod and the second supporting and fixing rod and the third supporting and fixing rod connects and fixes the first telescopic rod by bolts, the first telescopic rod is provided with a fixing hole, the interior of the first telescopic rod is penetrated by the second telescopic rod, and the first telescopic rod and the second telescopic rod are connected and fixed by fixing bolts.

[0011] Preferably, the lower end of the second telescopic rod supports the chassis via bolts.

[0012] Preferably, the micrometer mechanism includes a reading table, the lower end of the reading table is connected and fixed to the connector by bolts, the lower end of the connector is equipped with a fixed-length rod, the lower end of the fixed-length rod is connected and fixed to the measuring sensor by bolts, the lower end of the measuring sensor is equipped with a probe, and the probe is connected with a first measuring micrometer head and a second measuring micrometer head.

[0013] Preferably, the first measuring micrometer is installed on a first connecting rod, a second connecting rod is installed inside the first connecting rod, the second connecting rod and the first connecting rod are connected and fixed by a fixing bolt, and the second connecting rod is installed with a second measuring micrometer.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model utilizes a supporting and fixing rod and a connecting rod, a servo motor and a threaded screw, a moving disk and a movable bolt and an articulated sleeve. Through the supporting and fixing rod, the sleeve part is firmly placed in the middle position of the measuring device, thereby avoiding measurement errors caused by the movement of the sleeve part. By fixing the clamping curved plate, it is ensured that the measuring device is in full contact with the surface of the sleeve part, and the movement of the sleeve part during the measurement process is avoided, thereby ensuring the accuracy and stability of the measurement, and avoiding the movement of the sleeve part caused by factors such as the interaction force between the measuring instrument and the object to be measured or the improper force applied by the hand during measurement.

[0016] (2) The utility model can conveniently adjust the height of the micrometer structure by utilizing the first telescopic rod and the second telescopic rod to adapt to sleeve parts of different heights, thereby ensuring that the micrometer can accurately contact the inner diameter for measurement. By locking the position of the second telescopic rod by fixing the bolt, the stability of the micrometer can be maintained during the measurement process, thereby reducing measurement errors caused by equipment shaking or part movement.

[0017] (3) The utility model utilizes the second connecting rod and the first connecting rod, the first measuring micrometer and the second measuring micrometer. By adjusting the length of the second connecting rod, it can ensure that the first measuring micrometer and the second measuring micrometer accurately contact the inner wall of the sleeve part, so as to quickly adjust the length of the second connecting rod, so that there is no need to replace the measuring tool when measuring sleeves with different inner diameter sizes, which can save time and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a micrometer for accurately measuring the inner diameter of a sleeve provided by the utility model from a first perspective;

[0019] Figure 2 A schematic diagram of the structure from a second viewing angle of a micrometer for accurately measuring the inner diameter of a sleeve provided by the utility model;

[0020] Figure 3 A schematic diagram of the structure of a fixing assembly of a micrometer for accurately measuring the inner diameter of a sleeve provided by the utility model;

[0021] Figure 4 A schematic diagram of the structure of a fixed clamping curved plate and a supporting fixed rod of a micrometer for accurately measuring the inner diameter of a sleeve provided by the utility model;

[0022] Figure 5 A reading table of a micrometer for accurately measuring the inner diameter of a sleeve and a schematic diagram of a fixed-length rod structure provided by the utility model;

[0023] Figure 6 for Figure 5A magnified view of part A in FIG.

[0024] The names corresponding to the reference numerals are: 100, micrometer mechanism; 102, sleeve part; 103, fixed disc; 104, reading table; 105, connector; 106, fixed length rod; 107, measuring sensor; 108, probe; 109, first measuring micrometer; 110, first connecting rod; 111, fixing bolt; 112, second connecting rod; 113, second measuring micrometer; 200, fixing assembly; 201, first supporting fixing rod; 202, second supporting fixing rod; 2 03, the third supporting fixed rod; 204, the first connecting rod; 205, the second connecting rod; 206, the third connecting rod; 207, the sliding block; 208, the electric motor; 209, the threaded screw; 210, the moving plate; 211, the fixed block; 212, the movable bolt; 213, the moving groove; 215, the fixed clamping curved plate; 216, the rubber plate; 217, the first telescopic rod; 218, the fixing hole; 219, the fixing bolt; 220, the second telescopic rod; 221, the supporting chassis; 223, the articulated sleeve. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0026] First embodiment:

[0027] like Figure 1-3As shown, the micrometer for accurately measuring the inner diameter of the sleeve provided by the utility model comprises: a micrometer mechanism 100 and a fixing assembly 200, the micrometer mechanism 100 is connected to the inside of the fixed disc 103 by penetrating, the outer side of the fixed disc 103 is connected and fixed with a hinge sleeve 223 by welding, the inside of the hinge sleeve 223 is penetrated and connected with a movable bolt 212, the movable bolt 212 connects and fixes the first support fixing rod 201 and the second support fixing rod 202 with the third support fixing rod 203 by welding, and a supporting stable tripod structure can be formed on the fixed disc 103 by fixing the first support fixing rod 201 and the second support fixing rod 202 with the third support fixing rod 203, the first support fixing rod 201 and the second support fixing rod 202 with the third support fixing rod 203 01 and the second supporting fixing rod 202 and the third supporting fixing rod 203 are connected and fixed by welding the fixed clamping curved plate 215, the inner ends of the first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203 are installed with the first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206, the first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206 are connected through the inside of the fixed block 211 through the movable bolt 212, the fixed block 211 is connected and fixed to the movable disk 210 by welding, the inside of the movable disk 210 is connected through the threaded screw 209, the upper end of the threaded screw 209 is connected and fixed to the electric motor 208 by bolts, and the electric motor 208 is connected and fixed by the screw The bolt connects and fixes the fixed disc 103, and the fixed clamping curved plate 215 contacts and fixes the sleeve part 102. The micrometer mechanism 100 component is placed inside the sleeve part 102. In actual use, when the measurement personnel measure the inner diameter of the sleeve part 102, the sleeve part 102 is placed in the middle position of the first supporting fixed rod 201 and the second supporting fixed rod 202 and the third supporting fixed rod 203. After that, the electric motor 208 is driven to drive the threaded screw 209 to rotate, and the movable disk 210 on the threaded screw 209 is further moved up and down. The movement of the movable disk 210 can drive the first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206 to move up and down. The movable bolt 212 can be moved and rotated according to the outer diameter of the sleeve part 102. The opening and contraction angles of the first supporting fixed rod 201, the second supporting fixed rod 202 and the third supporting fixed rod 203 can be further adjusted by moving the movable disk 210 up and down. When the first connecting rod 204, the second connecting rod 205 and the third connecting rod 206 are further moved up and down, the first supporting fixed rod 201, the second supporting fixed rod 202 and the third supporting fixed rod 203 are opened and contracted. After that, they are contacted and fixedly clamped on the surface of the sleeve part 102 by the fixed clamping curved plate 215, which can reduce the movement of the measuring sleeve part 102 and avoid inaccurate measurement data.

[0028] In this embodiment, by utilizing a supporting fixed rod and a connecting rod, a servo motor and a threaded screw 209, a movable disk 210, a movable bolt 212 and an articulated sleeve 223, the sleeve part 102 is firmly placed in the middle position of the measuring device through the supporting fixed rod, thereby avoiding measurement errors caused by the movement of the sleeve part 102, and by fixing the clamping curved plate 215, it is ensured that the measuring device is in full contact with the surface of the sleeve part 102, thereby avoiding the movement of the sleeve part 102 during the measurement process, thereby ensuring the accuracy and stability of the measurement, and avoiding the movement of the sleeve part 102 caused by factors such as the interaction force between the measuring instrument and the object to be measured or the inappropriate force applied by the hand during measurement.

[0029] Second embodiment:

[0030] like Figure 1 , Figure 3-4 As shown, the first connecting rod 204 and the second connecting rod 205 and one end of the third connecting rod 206 are connected and fixed by welding with a sliding block 207, and the sliding block 207 is installed inside the first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203. The first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203 are provided with a movable groove 213. The sliding block 207 installed by the first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206 can move in the movable groove 213 inside the first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203. The first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206 can drive the first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203 to open and contract, and can provide a stabilizing effect.

[0031] Third embodiment:

[0032] like Figure 1 , Figure 4 As shown, one side end of the first supporting fixing rod 201 and the second supporting fixing rod 202 and the third supporting fixing rod 203 are connected and fixed to the first telescopic rod 217 by bolts, the first telescopic rod 217 is provided with a fixing hole 218, the interior of the first telescopic rod 217 is penetrated by the second telescopic rod 220, the first telescopic rod 217 and the second telescopic rod 220 are connected and fixed by fixing bolts 219, and the lower end of the second telescopic rod 220 is supported on the chassis 221 by bolts. When the height of the sleeve part 102 to be measured is relatively low or high, in order to facilitate the contact of the components of the micrometer mechanism 100 with the inner diameter of the sleeve part 102 for measurement, the second telescopic rod 220 can be adjusted to be telescopically moved, and is connected and fixed by fixing bolts 219.

[0033] In this embodiment, by utilizing the first telescopic rod 217 and the second telescopic rod 220, the height of the micrometer mechanism 100 can be conveniently adjusted to accommodate sleeve parts 102 of different heights, thereby ensuring that the micrometer can accurately contact the inner diameter for measurement. By locking the position of the second telescopic rod 220 by fixing the bolt 219, the stability of the micrometer can be maintained during the measurement process, thereby reducing measurement errors caused by equipment shaking or part movement.

[0034] Fourth embodiment:

[0035] like Figure 1 , Figure 5-6 As shown, the micrometer mechanism 100 includes a reading table 104, the lower end of the reading table 104 is connected and fixed to the connector 105 by bolts, the lower end of the connector 105 is installed with a fixed-length rod 106, the lower end of the fixed-length rod 106 is connected and fixed to the measuring sensor 107 by bolts, and the lower end of the measuring sensor 107 is installed with a probe 108, and the probe 108 is connected with a first measuring micrometer head 109 and a second measuring micrometer head 113. The inner diameter is measured by placing the fixed-length rod 106 and the measuring sensor 107 of the micrometer mechanism 100 inside the sleeve part 102, and the first measuring micrometer head 109 and the second measuring micrometer head 113 are contacted with the inner wall of the sleeve part 102 to measure the value of the inner diameter, and the value of the inner diameter can be displayed by the reading table 104.

[0036] Fifth embodiment:

[0037] like Figure 5 , Figure 6 As shown, the first measuring micrometer 109 is installed on the first connecting rod 110, and the second connecting rod 112 is installed inside the first connecting rod 110. The first measuring micrometer 109 needs to touch the inner inner wall of the sleeve part 102. The second connecting rod 112 and the first connecting rod 110 are connected and fixed by a fixing bolt 111. When the inner diameter of the sleeve part 102 is too large, the second connecting rod 112 is moved out from the first connecting rod 110 to lengthen it, so that the second measuring micrometer 113 of the second connecting rod 112 can touch the inner wall of the sleeve part 102. The second connecting rod 112 is installed with the second measuring micrometer 113.

[0038] In this embodiment, by utilizing the second connecting rod 112 and the first connecting rod 110, the first measuring micrometer 109 and the second measuring micrometer 113, by adjusting the length of the second connecting rod 112, it is possible to ensure that the first measuring micrometer 109 and the second measuring micrometer 113 accurately contact the inner wall of the sleeve part 102, so as to quickly adjust the length of the second connecting rod 112, so that there is no need to replace the measuring tool when measuring sleeves of different inner diameter sizes, which can save time and improve work efficiency.

[0039] When in use, when the measurement personnel measure the inner diameter of the sleeve part 102, first, the sleeve part 102 is placed in the middle of the first supporting and fixing rod 201, the second supporting and fixing rod 202 and the third supporting and fixing rod 203, and then the electric motor 208 is driven to drive the threaded screw 209 to rotate, and the movable plate 210 on the threaded screw 209 is further moved up and down. The movement of the movable plate 210 can drive the first connecting rod 204, the second connecting rod 205 and the third connecting rod 206 to move up and down, and rotate through the movable bolt 212, so as to measure the inner diameter of the sleeve part 102 according to the outer diameter of the sleeve part 102. The first supporting fixed rod 201 and the second supporting fixed rod 202 and the third supporting fixed rod 203 are further adjusted by moving the moving plate 210 up and down to open and contract the angles, and the first connecting rod 204 and the second connecting rod 205 and the third connecting rod 206 are further moved up and down to open and contract the angles of the first supporting fixed rod 201 and the second supporting fixed rod 202 and the third supporting fixed rod 203, and then the fixed clamping curved plate 215 is contacted and fixedly clamped on the surface of the sleeve part 102, which can reduce the movement of the measuring sleeve part 102 and avoid inaccurate measurement data. The above embodiment is only one of the preferred embodiments of the utility model, and should not be used to limit the protection scope of the utility model. Any changes or modifications made to the main design concept and spirit of the utility model without any substantial meaning, and the technical problems solved by them are still consistent with the utility model, should be included in the protection scope of the utility model.

Claims

1. A micrometer for accurately measuring the inner diameter of a sleeve, characterized in that: include: A micrometer mechanism (100) and a fixing assembly (200), wherein the micrometer mechanism (100) is connected to the inside of a fixing disk (103) by penetrating, the outside of the fixing disk (103) is connected and fixed with a hinge sleeve (223) by welding, the inside of the hinge sleeve (223) is connected and fixed with a movable bolt (212), the movable bolt (212) connects and fixes a first support fixing rod (201) and a second support fixing rod (202) with a third support fixing rod (203) by welding, the first support fixing rod (201) and the second support fixing rod (202) with the third support fixing rod (203) are connected and fixed with a fixed clamping curved plate (215) by welding, the inside of the first support fixing rod (201) and the second support fixing rod (202) with the third support fixing rod (203) A first connecting rod (204), a second connecting rod (205) and a third connecting rod (206) are installed at the side end. The first connecting rod (204), the second connecting rod (205) and the third connecting rod (206) are connected to the inside of a fixed block (211) through a movable bolt (212). The fixed block (211) is connected and fixed to a movable disk (210) by welding. A threaded screw (209) is connected and fixed to the inside of the movable disk (210). The upper end of the threaded screw (209) is connected and fixed to an electric motor (208) through bolts. The electric motor (208) is connected and fixed to a fixed disk (103) through bolts. The fixed clamping curved plate (215) is contacted and fixedly clamped with a sleeve part (102). A micrometer mechanism (100) component is inserted and placed inside the sleeve part (102).

2. A micrometer for accurately measuring the inner diameter of a sleeve according to claim 1, characterized in that: The first connecting rod (204), the second connecting rod (205) and one end of the third connecting rod (206) are connected and fixed by a sliding block (207) by welding; the sliding block (207) is installed inside the first supporting fixing rod (201), the second supporting fixing rod (202) and the third supporting fixing rod (203); and the first supporting fixing rod (201), the second supporting fixing rod (202) and the third supporting fixing rod (203) are provided with a movable groove (213) inside.

3. A micrometer for accurately measuring the inner diameter of a sleeve according to claim 2, characterized in that: The first supporting and fixing rod (201) and the second supporting and fixing rod (202) and the third supporting and fixing rod (203) are connected and fixed to the first telescopic rod (217) by bolts; the first telescopic rod (217) is provided with a fixing hole (218); the interior of the first telescopic rod (217) is penetrated by the second telescopic rod (220); the first telescopic rod (217) and the second telescopic rod (220) are connected and fixed by fixing bolts (219).

4. A micrometer for accurately measuring the inner diameter of a sleeve according to claim 3, characterized in that: The lower end of the second telescopic rod (220) supports the chassis (221) via bolts.

5. A micrometer for accurately measuring the inner diameter of a sleeve according to claim 1, characterized in that: The micrometer mechanism (100) comprises a reading gauge (104), the lower end of the reading gauge (104) being connected and fixed to a connector (105) by means of bolts, the lower end of the connector (105) being provided with a fixed-length rod (106), the lower end of the fixed-length rod (106) being connected and fixed to a measuring sensor (107) by means of bolts, the lower end of the measuring sensor (107) being provided with a probe (108), the probe (108) being penetrated and connected with a first measuring micrometer head (109) and a second measuring micrometer head (113).

6. A micrometer for accurately measuring the inner diameter of a sleeve according to claim 5, characterized in that: The first measuring micrometer (109) is mounted on a first connecting rod (110), a second connecting rod (112) is mounted inside the first connecting rod (110), the second connecting rod (112) and the first connecting rod (110) are connected and fixed via a fixing bolt (111), and a second measuring micrometer (113) is mounted on the second connecting rod (112).

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