A position degree gauge for taper hole key groove

Abstract

The application discloses a position degree gauge for a taper hole key groove and relates to the field of workpiece detection.The position degree gauge comprises a base, a to-be-detected gear and a measuring block.The top of the base is provided with a fixing rod along the height direction of the base.The to-be-detected gear is located on the outer side of the fixing rod.The measuring block is located above the to-be-detected gear.The fixing rod is of a hollow structure.The fixing rod is internally provided with a positioning block and a linkage assembly for driving the positioning block to move.The top of the measuring block is connected with a lifting assembly.The lifting assembly is matched with the linkage assembly to drive the measuring block and the positioning block to move synchronously.The base is internally further provided with a positioning mechanism for fixing the to-be-detected gear.The position degree gauge for the taper hole key groove can realize the effect of quickly positioning and measuring the key groove, effectively improves the efficiency of the key groove of the key groove, and effectively prevents the measuring block and the to-be-detected gear from being damaged in the detection process.

Description

TECHNICAL FIELD

[0001] The present application relates to workpiece detection technology, in particular to a kind of for taper hole keyway position degree gauge. BACKGROUND

[0002] Without special gauge, three coordinates are generally used to detect the shape tolerance of a large number of products, and the judgment is made by issuing a test report.

[0003] In order to facilitate the installation of the gear, an inner hole and a keyway are usually provided inside the gear. The keyway is used to be inserted with the key pin on the outer wall of the driving shaft. The keyway has a positional requirement relative to the external helical teeth of the part. However, the three coordinates are not efficient in detecting the positional degree of the keyway. There are also measuring blocks for detecting the keyway, but the positioning is not accurate during detection, or the measuring block and the gear are damaged due to the non-compliance of the keyway. Therefore, the present application provides a kind of for taper hole keyway position degree gauge. SUMMARY

[0004] The purpose of the present application is to provide a kind of for taper hole keyway position degree gauge to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of for taper hole keyway position degree gauge, including base, to be detected gear and measuring block, the top of the base is installed with fixed rod along its height direction, the to-be-detected gear is located on the outer side of fixed rod, the measuring block is located above the to-be-detected gear, the fixed rod is hollow structure, the inside of the fixed rod is provided with positioning block and linkage assembly for driving positioning block to move, the top of the measuring block is connected with lifting assembly, the lifting assembly is matched with linkage assembly, for driving measuring block and positioning block to keep synchronous movement, the inside of the base is also provided with positioning mechanism for fixing to-be-detected gear.

[0006] Further, the inside of the to-be-detected gear is respectively provided with an inner hole and a keyway along its axial direction, the inner hole is communicated with the keyway, and the keyway is matched with the measuring block.

[0007] Further, the linkage assembly includes a first telescopic rod installed in the inside of the fixed rod along the axial direction of the fixed rod, a rubber block fixed to the elongated end of the first telescopic rod, and a sliding groove provided in the top of the fixed rod along the radial direction of the fixed rod, the first telescopic rod is provided through the sliding groove and is in sliding connection with the sliding groove, the positioning block is fixed to the bottom end of the first telescopic rod, and the other end of the positioning block extends into the inside of the keyway.

[0008] Further, the top of the base is fixedly connected with an L-shaped bracket, the top of the bracket is provided with a movable slot, the movable slot is above the fixed rod, the inside of the movable slot is slidably connected with a supporting block, and the outer wall of one side of the supporting block is fixedly connected with a first spring which is fixedly connected with the inner wall of the movable slot.

[0009] Further, the lifting assembly comprises a hydraulic cylinder which is fixedly connected inside the supporting block along the height direction of the base, a second telescopic rod which is fixedly connected to the extension end of the hydraulic cylinder, a second spring which is sleeved outside the second telescopic rod, and a connecting hole which is provided in the supporting block and penetrates through the inside of the connecting hole, the extension end of the second telescopic rod is fixedly connected to the top of the measuring block, the top end of the second spring is fixedly connected to the bottom of the supporting block, the bottom end of the second spring is fixedly connected to the top of the measuring block, and the connecting hole is matched with the rubber block.

[0010] Further, the positioning mechanism comprises four limiting grooves which are provided in the top of the base along the radial direction, four sliding rods which are slidably connected inside the four limiting grooves respectively, and a driving assembly which is used for driving the four sliding rods to move along the respective limiting grooves, and the four sliding rods are located outside the gear to be detected.

[0011] Further, the top of each of the four sliding rods is fixedly connected with an upper pressing block, and the bottom of each of the four upper pressing blocks which is close to the side of the gear to be detected is provided with a right triangle structure adaptive slot.

[0012] Further, the driving assembly comprises a lead screw which is rotatably connected to the inner wall of the base along the height direction of the base, a connecting block which is screwed outside the lead screw, and four connecting rods which are hingedly connected to the outer wall of the connecting block respectively, the other end of each of the four connecting rods is hingedly connected to the bottom of each of the four sliding rods, the bottom of the base is provided with a motor, and the output end of the motor is in transmission connection with the bottom end of the lead screw.

[0013] Further, the inner wall of the base is fixedly connected with four guide rods along the radial direction of the base, and the four sliding rods are slidably connected outside the four guide rods respectively.

[0014] Compared with the prior art, the position degree gauge for the taper hole key groove provided by the present application has the following advantages: 1. by driving the rubber block to move upwards and insert into the inside of the connecting hole, the supporting block is driven to move rightwards along the inner wall of the movable slot through the rebound force of the first spring, until the positioning block at the bottom end of the first telescopic rod abuts against the inner wall of the key groove, at this time, the measuring block below the supporting block is synchronously driven to be right above the key groove, then the hydraulic cylinder is controlled to extend downwards, and then the measuring block is driven to move downwards through the second telescopic rod, the measuring block moves downwards into the inside of the key groove, if the measuring block is completely matched with the key groove, the key groove meets the requirements, if the measuring block cannot be inserted into the inside of the key groove, the key groove does not meet the requirements, thereby realizing the effect of quickly positioning and measuring the key groove, and effectively improving the efficiency of the key groove.

[0015] 2. Additionally, during the process where the keyway cannot be inserted, the second telescopic rod has a certain buffer time. During this time, the operator can stop inserting the measuring block, thereby protecting the measuring block and the gear under test and effectively preventing damage to the measuring block and the gear under test during the testing process.

[0016] 3. The upper pressure block has a certain amount of room to move, which allows it to fix gears of different diameters. In addition, the adaptation groove on the upper pressure block has a certain height difference, which allows it to fix gears of different thicknesses. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A;

[0020] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B;

[0021] Figure 4 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;

[0022] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure at point C.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base; 2. Gear to be inspected; 3. Measuring block; 4. Fixing rod; 5. Positioning block; 6. Inner hole; 7. Keyway; 8. First telescopic rod; 9. Rubber block; 10. Slide groove; 11. Bracket; 12. Movable groove; 13. Support block; 14. First spring; 15. Hydraulic cylinder; 16. Second telescopic rod; 17. Second spring; 18. Connecting hole; 19. Limiting groove; 20. Slide bar; 21. Upper pressure block; 22. Lead screw; 23. Connecting block; 24. Connecting rod; 25. Motor; 26. Guide rod. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment One:

[0027] Please refer to Figures 1-5 A position degree gauge for taper hole key groove, comprising a base 1, a gear to be tested 2 and a measuring block 3, a fixed rod 4 is installed on the top of the base 1 along the height direction thereof, the gear to be tested 2 is located outside the fixed rod 4, the measuring block 3 is located above the gear to be tested 2, the fixed rod 4 is of hollow structure, a positioning block 5 and a linkage assembly for driving the positioning block 5 to move are arranged inside the fixed rod 4, a lifting assembly is connected to the top of the measuring block 3, the lifting assembly is matched with the linkage assembly for driving the measuring block 3 and the positioning block 5 to move synchronously, an inner hole 6 and a key groove 7 are respectively formed in the gear to be tested 2 along the axial direction thereof, the inner hole 6 is communicated with the key groove 7, the key groove 7 is matched with the measuring block 3, the linkage assembly comprises a first telescopic rod 8 installed in the fixed rod 4 along the axial direction thereof, a rubber block 9 fixedly connected to the elongated end of the first telescopic rod 8 and a sliding groove 10 formed in the top of the fixed rod 4 along the radial direction thereof, the first telescopic rod 8 is arranged through the sliding groove 10 and is in sliding connection with the sliding groove 10, the positioning block 5 is fixedly connected to the bottom end of the first telescopic rod 8 and extends to the inside of the key groove 7, first, the worker sleeves the gear to be tested 2 outside the fixed rod 4 and makes the key groove of the gear to be tested 2 located outside the positioning block 5;

[0028] The top of the base 1 is fixed with the bracket 11 of L-shaped structure, the top of the bracket 11 is provided with the movable slot 12, the movable slot 12 is located above the fixed rod 4, the inside of the movable slot 12 is slidely connected with the supporting block 13, the outer wall of one side of the supporting block 13 is fixedly connected with the first spring 14 fixedly connected with the inner wall of the movable slot 12, the lifting assembly comprises the hydraulic cylinder 15 fixedly connected in the inside of the supporting block 13 along the height direction of the base 1, the second telescopic rod 16 fixedly connected with the extension end of the hydraulic cylinder 15, the second spring 17 sleeved outside the second telescopic rod 16 and the connecting hole 18 penetrating through the inside of the supporting block 13, the extension end of the second telescopic rod 16 is fixedly connected with the top of the measuring block 3, the top end of the second spring 17 is fixedly connected with the bottom of the supporting block 13, the bottom end of the second spring 17 is fixedly connected with the top of the measuring block 3, the connecting hole 18 is matched with the rubber block 9, by driving the rubber block 9 to move upwards and insert into the inside of the connecting hole 18, the first telescopic rod 8 is elongated, then the first telescopic rod 8 is loosened, the supporting block 13 is driven to move right along the inner wall of the movable slot 12 by the rebound force of the first spring 14, until the positioning block 5 at the bottom end of the first telescopic rod 8 abuts against the inner wall of the key groove 7, at this time, the measuring block 3 below the supporting block 13 is synchronously driven to be directly above the key groove 7, then the hydraulic cylinder 15 is controlled to be elongated downwards, and then the measuring block 3 is driven to move downwards by the second telescopic rod 16, the measuring block 3 moves downwards into the inside of the key groove 7, because the outer wall of the measuring block 3 has friction with the inner wall of the key groove 7, so the second telescopic rod 16 will first contract, when the second telescopic rod 16 is completely contracted, the measuring block 3 is driven to enter the inside of the key groove 7, if the measuring block 3 is completely matched with the key groove 7, the key groove 7 meets the requirements, if the measuring block 3 cannot be inserted into the inside of the key groove 7, the key groove 7 does not meet the requirements, in addition, in the process of not being inserted into the key groove 7, the second telescopic rod 16 has a certain buffer time, in this time, the staff can stop the insertion of the measuring block 3, and then the measuring block 3 and the gear to be detected 2 are protected.

[0029] Example two:

[0030] See Figure 1 and Figure 4The embodiment is based on the embodiment one and provides a technical scheme that the base 1 is internally provided with a positioning mechanism for fixing the gear to be detected 2. The positioning mechanism comprises four limiting grooves 19 radially arranged on the top of the base 1, four sliding rods 20 respectively slidably arranged in the four limiting grooves 19, and a driving assembly for driving the four sliding rods 20 to move along the respective limiting grooves 19. The four sliding rods 20 are located on the outside of the gear to be detected 2. The driving assembly comprises a screw rod 22 rotationally connected to the inner wall of the base 1 in the height direction, a connecting block 23 screwed to the outer portion of the screw rod 22, and four connecting rods 24 respectively hingedly connected to the outer wall of the connecting block 23. The other ends of the four connecting rods 24 are respectively hingedly connected to the bottom of the four sliding rods 20. The bottom of the base 1 is provided with a motor 25. The output end of the motor 25 is drivingly connected to the bottom end of the screw rod 22. The inner wall of the base 1 is fixedly provided with four guide rods 26 in the radial direction. The four sliding rods 20 are respectively slidably arranged on the outer portions of the four guide rods 26. The motor 25 is started to drive the screw rod 22 to rotate in the forward direction, thereby driving the connecting block 23 to move downward, so as to respectively drive the four sliding rods 20 to move along the outer walls of the respective guide rods 26 toward the gear to be detected 2 through the four connecting rods 24. Conversely, the motor 25 is started to drive the screw rod 22 to rotate in the reverse direction, thereby driving the connecting block 23 to move upward, so as to respectively drive the four sliding rods 20 to move along the outer walls of the respective guide rods 26 away from the gear to be detected 2 through the four connecting rods 24.

[0031] The top of each of the four sliding rods 20 is fixedly provided with an upper pressing block 21. The bottom of each of the four upper pressing blocks 21 near the side of the gear to be detected 2 is provided with a right-angled triangular adaptive groove. When the four sliding rods 20 are close to each other, the adaptive grooves on the four upper pressing blocks 21 abut against the gear to be detected 2. Since the upper pressing blocks 21 have a certain space for movement, the upper pressing blocks 21 can fix gears to be detected 2 with different diameters. In addition, the adaptive grooves on the upper pressing blocks 21 have a certain height difference, so that the upper pressing blocks 21 can fix gears to be detected 2 with different thicknesses.

[0032] Working principle: in use, first, the staff will be detected gear 2 is sleeved on the outside of the fixed rod 4, and make the keyway of the gear 2 is located outside the positioning block 5, through the start motor 25 drive screw 22 positive rotation, in turn drive the connecting block 23 to move down, so as to drive four connecting rods 24 respectively through four slide bars 20 along the outer wall of the respective guide rod 26 to the direction of the gear 2, when the four slide bars 20 close to each other, the four upper pressing block 21 on the adaptive groove will be in contact with the gear 2, because the upper pressing block 21 has a certain activity space, in turn can be fixed to different diameter of the gear 2, in addition, the adaptive groove on the upper pressing block 21 has a certain height difference, in turn can be fixed to different thickness of the gear 2, after the gear 2 is fixed, through the drive rubber block 9 to move up and insert into the inside of the connecting hole 18, the first telescopic rod 8 is elongated, then loosen the first telescopic rod 8, drive the support block 13 along the inner wall of the movable slot 12 to the right through the rebound force of the first spring 14, until the positioning block 5 at the bottom of the first telescopic rod 8 is in contact with the inner wall of the keyway 7, at this time, the measuring block 3 below the support block 13 is synchronously driven to the top of the keyway 7, then control the hydraulic cylinder 15 to elongate downward, in turn drive the measuring block 3 to move down through the second telescopic rod 16, the measuring block 3 moves into the inside of the keyway 7, because the outer wall of the measuring block 3 and the inner wall of the keyway 7 have friction, so the second telescopic rod 16 will shrink first, when the second telescopic rod 16 is completely contracted, it will drive the measuring block 3 into the inside of the keyway 7, if the measuring block 3 and the keyway 7 are completely consistent, then the keyway 7 meets the requirements, if the measuring block 3 cannot be inserted into the inside of the keyway 7, then the keyway 7 does not meet the requirements, in addition, in the process of being unable to insert into the keyway 7, the second telescopic rod 16 has a certain buffer time, in this time, the staff can stop the insertion of the measuring block 3, in turn play the role of protecting the measuring block 3 and the gear 2.

[0033] The foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A position gauge for a tapered keyway, comprising a base (1), a gear to be inspected (2), and a measuring block (3), characterized in that, A fixing rod (4) is installed on the top of the base (1) along its height direction. The gear (2) to be inspected is located outside the fixing rod (4). The measuring block (3) is located above the gear (2) to be inspected. The fixing rod (4) is a hollow structure. A positioning block (5) and a linkage component for driving the positioning block (5) to move are provided inside the fixing rod (4). A lifting component is connected to the top of the measuring block (3). The lifting component cooperates with the linkage component to drive the measuring block (3) and the positioning block (5) to move synchronously. A positioning mechanism for fixing the gear (2) to be inspected is also provided inside the base (1). The gear to be inspected (2) has an inner hole (6) and a keyway (7) that are respectively opened through it along its axial direction. The inner hole (6) is connected to the keyway (7), and the keyway (7) is engaged with the measuring block (3). The other end of the positioning block (5) extends into the interior of the keyway (7); The lifting assembly includes a hydraulic cylinder (15) fixedly connected to the inside of the support block (13) along the height direction of the base (1), a second telescopic rod (16) fixedly connected to the extended end of the hydraulic cylinder (15), a second spring (17) sleeved on the outside of the second telescopic rod (16), and a connecting hole (18) penetrating inside the support block (13). The extended end of the second telescopic rod (16) is fixedly connected to the top of the measuring block (3), the top end of the second spring (17) is fixedly connected to the bottom of the support block (13), and the bottom end of the second spring (17) is fixedly connected to the top of the measuring block (3). The connecting hole (18) cooperates with the rubber block (9), and the rubber block (9) moves upward and inserts into the interior of the connecting hole (18).

2. The position measurement fixture for a tapered keyway according to claim 1, characterized in that, The linkage assembly includes a first telescopic rod (8) installed axially inside the fixed rod (4), a rubber block (9) fixed to the extended end of the first telescopic rod (8), and a groove (10) radially opened on the top of the fixed rod (4). The first telescopic rod (8) passes through the groove (10) and slides in contact with the groove (10). The positioning block (5) is fixed to the bottom end of the first telescopic rod (8).

3. A position gauge for a tapered keyway according to claim 2, characterized in that, The top of the base (1) is fixedly connected to an L-shaped bracket (11). The top of the bracket (11) is provided with a movable groove (12). The movable groove (12) is located above the fixed rod (4). A support block (13) is slidably connected inside the movable groove (12). A first spring (14) is fixedly connected to the inner wall of the movable groove (12) on one side of the outer wall of the support block (13).

4. A position gauge for a tapered keyway according to claim 1, characterized in that, The positioning mechanism includes four limiting grooves (19) radially opened on the top of the base (1), four slide bars (20) respectively slidably connected inside the four limiting grooves (19), and a driving assembly for driving the four slide bars (20) to move along their respective limiting grooves (19). All four slide bars (20) are located outside the gear (2) to be inspected.

5. A position gauge for a tapered keyway according to claim 4, characterized in that, The top of each of the four slide bars (20) is fixed with an upper pressure block (21), and the bottom of each of the four upper pressure blocks (21) near the gear (2) to be inspected is provided with an adaptation groove of right angle triangle structure.

6. A position gauge for a tapered keyway according to claim 4, characterized in that, The drive assembly includes a lead screw (22) rotatably connected to the inner wall of the base (1) along its height direction, a connecting block (23) screwed to the outside of the lead screw (22), and four connecting rods (24) respectively hinged to the outer wall of the connecting block (23). The other ends of the four connecting rods (24) are respectively hinged to the bottom of four slide bars (20). A motor (25) is installed at the bottom of the base (1), and the output end of the motor (25) is connected to the bottom end of the lead screw (22) for transmission.

7. A position gauge for a tapered keyway according to claim 4, characterized in that, The inner wall of the base (1) is fixed with four guide rods (26) along its radial direction, and the four slide bars (20) are respectively slidably connected to the outside of the four guide rods (26).

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