Clamping jaw type circular run-out testing fixture

Abstract

The utility model discloses a clamping jaw type circular run-out detection tool, and belongs to the field of circular run-out detection. Comprising a driving piece, a plurality of clamping jaws, a clamping block, a sleeve, a limiting piece and a dial indicator. The clamping jaw is directly or indirectly hinged to the rotating end of the driving piece, and the sleeve is placed on the clamping block and prevented from deviating in the direction perpendicular to the axis of the sleeve. The rotating end of the driving part is positioned in the sleeve; the sleeve is connected with the clamping jaw in an abutting mode. When the sleeve moves along the axis of the sleeve, the clamping jaw can be used for clamping and loosening; the limiting piece is used for fixing the sleeve after the sleeve moves; the clamping jaw is used for clamping a to-be-detected workpiece with a circular surface, and a measuring head of the dial indicator abuts against the circular surface of the to-be-detected workpiece. The circular run-out detection clamp has the beneficial effects that the whole clamp is rotated after the to-be-detected workpiece is clamped by using the clamping jaws which are simultaneously clamped and loosened, so that errors existing in circular run-out detection are reduced.

Description

Technical Field

[0001] This application relates to the field of circular runout detection, and more specifically, to a gripper-type circular runout gauge. Background Technology

[0002] Workpieces that require circular runout testing are usually circular rods or tubes. When performing circular runout testing on a workpiece, the workpiece is usually fixed to a rotatable connecting carrier, the workpiece is rotated, and then the side of a dial indicator is used to contact the outer circular surface of the workpiece to perform circular runout testing.

[0003] However, in the above scheme, the connection between the connecting carrier and the workpiece will cause errors in the workpiece during rotation, which will lead to errors in the detection of workpiece circular runout. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a gripper-type circular runout gauge, comprising: a driving component, multiple grippers, a clamping block, a sleeve, a limiting component, and a dial indicator; the grippers are directly or indirectly hinged to the rotating end of the driving component, the sleeve is placed on the clamping block to prevent the sleeve from shifting along a direction perpendicular to the sleeve's axis; the rotating end of the driving component is located inside the sleeve; the sleeve abuts against the grippers; when the sleeve moves along its axis, the grippers can clamp and release; the limiting component is used to fix the sleeve after it has moved; the grippers are used to hold a workpiece with a circular surface to be inspected, and the probe of the dial indicator abuts against the circular surface of the workpiece to be inspected.

[0006] Furthermore, a first inclined surface is formed on the sleeve, and a second inclined surface is formed on the gripper for engaging with the first inclined surface; the gripper has a clamping surface on the side opposite to the second inclined surface for clamping the workpiece to be inspected.

[0007] Furthermore, the limiting member includes: a first insertion tube and a second insertion tube; the first insertion tube is sleeved onto the rotating end, and the second insertion tube is sleeved onto the first insertion tube; the second insertion tube is threadedly connected to the first insertion tube; an abutment surface for limiting the first insertion tube is formed on the rotating end, and the second insertion tube abuts against the end of the sleeve.

[0008] Furthermore, an abutment portion is formed on the first insertion tube, and the abutment surface limits the abutment portion; the abutment portion protrudes outward relative to the outer wall surface of the first insertion tube.

[0009] Furthermore, a thrust bearing is also provided on the output end, and the thrust bearing is disposed between the abutting surface and the abutting part; the abutting surface limits the abutting part through the thrust bearing.

[0010] Furthermore, the second insertion tube is provided with a threaded hole, which penetrates the wall of the second insertion tube along its axis; a screw is provided in the threaded hole, which is used to abut against the first insertion tube.

[0011] Furthermore, the driving component also includes a claw seat, which is fixed to the rotating end; a plurality of slots are formed on the claw seat, and one end of the gripper is inserted into the slot; a hinge rod is provided in the slot, which passes through the claw seat and the gripper, so that the gripper is hinged to the claw seat.

[0012] Furthermore, the workpiece to be inspected is a boss body; the gripper holds the protruding part of the boss body.

[0013] Furthermore, the gripper also forms a connecting surface perpendicular to the clamping surface; when the clamping surface clamps the protruding part of the boss body, the connecting surface fits against another part of the boss body.

[0014] Furthermore, the clamping surface and the connecting surface are perpendicular.

[0015] The beneficial effect of this application is that by using jaws that clamp and release simultaneously to hold the workpiece to be inspected and then rotating the entire fixture, the error in circular runout detection is reduced. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram:

[0019] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0020] Figure 2This is a structural schematic diagram as part of an embodiment, mainly showing an observation from another perspective. Figure 1 The structure;

[0021] Figure 3 yes Figure 2 A sectional view.

[0022] Figure label:

[0023] 1. Gripper; 11. Grip surface; 12. Connecting surface; 2. Sleeve; 21. First inclined surface; 22. Second inclined surface; 3. Limiting component; 4. First insertion tube; 41. Abutment part; 5. Second insertion tube; 6. Thrust bearing; 7. Screw; 8. Hinge rod; 9. Gripper seat; 10. Workpiece to be inspected. Detailed Implementation

[0024] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0025] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Reference Figure 1-3 ,

[0030] A gripper-type circular runout gauge includes: a driving component, multiple grippers 1, a locking block, a sleeve 2, a limiting component 3, and a dial indicator. The grippers 1 are directly or indirectly hinged to the rotating end of the driving component. In this embodiment, the grippers 1 are preferably directly hinged to the rotating end of the driving component. The driving component is a drive motor, and the rotating end of the driving component is the output shaft of the drive motor. The sleeve 2 is placed on the locking block, which prevents the sleeve 2 from shifting along a direction perpendicular to the axis of the sleeve 2. Preferably, the locking block is a block with a V-groove. The rotating end of the driving component is located inside the sleeve 2, thus partially housing the grippers 1 within the sleeve 2. The end of the sleeve 2 abuts against the grippers 1. When the sleeve 2 moves along its axis, the grippers 1 can be clamped and released. For example, when the sleeve 2 moves towards the grippers 1, the grippers 1 are partially and completely located inside the sleeve 2, thus the grippers 1 are clamped by the action of the sleeve 2. As the sleeve 2 moves away from the gripper 1, the gripper 1 is completely outside the sleeve 2, thus releasing the gripper 1 and allowing the workpiece 10 to be clamped and released. The limiting member 3 is used to fix the sleeve 2 after it moves, thereby keeping the gripper 1 holding the workpiece 10 with a circular surface. The probe of the dial indicator abuts against the circular surface of the workpiece 10. The method of using a dial indicator to detect the circular runout of a workpiece 10 with a circular surface is existing technology and will not be described further.

[0031] Specifically, a first inclined surface 21 is formed on the sleeve 2, and a second inclined surface 22 is formed on the gripper 1 for engaging with the first inclined surface 21; the gripper 1 has a clamping surface 11 for clamping the workpiece 10 to be inspected on the side opposite to the second inclined surface 22. By utilizing the contact between the first inclined surface 21 and the second inclined surface 22, the gripper 1 can be clamped and released, which is beneficial for achieving small-angle clamping and releasing of the gripper 1.

[0032] Specifically, the limiting member 3 includes a first insert 4 and a second insert 5. The first insert 4 is fitted onto the rotating end, and the second insert 5 is fitted onto the first insert 4. The second insert 5 is threadedly connected to the first insert 4. An abutment surface for limiting the first insert 4 is formed on the rotating end, and the second insert 5 abuts against the end of the sleeve 2. By adopting the above technical solution, after the sleeve 2 moves, the first insert 4 and the second insert 5 rotate relative to each other, thereby increasing the length of the first insert 4 and the second insert 5 between the abutment surface and the sleeve 2, thus limiting the sleeve 2 and preventing the sleeve 2 from moving away from the gripper 1, which would cause the gripper 1 to loosen, and better ensuring that the gripper 1 clamps the workpiece 10 to be inspected.

[0033] Specifically, an abutment portion 41 is formed on the first insertion tube 4, the abutment surface limits the abutment portion 41, and the abutment portion 41 protrudes outward relative to the outer wall surface of the first insertion tube 4. The abutment portion 41 is used to abut against the abutment surface.

[0034] Specifically, a thrust bearing 6 is also provided on the output end, and the thrust bearing 6 is disposed between the abutment surface and the abutment portion 41; the abutment surface limits the abutment portion 41 through the thrust bearing 6. The function of the thrust bearing 6 is to prevent the first insertion tube 4 from rotating when the rotating end rotates, thereby avoiding the situation where the first insertion tube 4 and the second insertion tube 5 rotate relative to each other when the driving component drives the workpiece 10 to be tested to rotate, thus better maintaining the clamping stability of the gripper 1.

[0035] Specifically, the second insertion tube 5 is provided with a threaded hole, which penetrates the wall of the second insertion tube 5 along its axis; a screw 7 is provided in the threaded hole, which is used to abut against the first insertion tube 4. The screw 7 is used to further lock the first insertion tube 4 and the second insertion tube 5, so that the first insertion tube 4 and the second insertion tube 5 are locked by the screw 7 on the premise of thread self-locking, thereby better ensuring the position of the sleeve 2 relative to the clamp 1.

[0036] Specifically, the workpiece 10 to be inspected is a boss; the gripper 1 clamps the protruding portion of the boss. The gripper 1 also forms a connecting surface 12 perpendicular to the clamping surface 11; when the clamping surface 11 clamps the protruding portion of the boss, the connecting surface 12 is in contact with another part of the boss. The clamping surface 11 and the connecting surface 12 are perpendicular.

[0037] In some other embodiments, the drive component further includes a claw seat 9, which is fixed to the rotating end. Multiple slots are formed on the claw seat 9, and one end of the gripper 1 is inserted into one of the slots. A hinge rod 8 is provided in the slot, passing through the claw seat 9 and the gripper 1, so that the gripper 1 is hinged to the claw seat 9. By hinged to the claw seat 9, while the claw seat 9 is fixed to the rotating end, the gripper 1 is indirectly hinged to the rotating end, thus avoiding the need for slots on the rotating end and reducing costs.

[0038] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A gripper-type circular runout gauge, characterized in that, include: Drive components, multiple grippers, clamping blocks, sleeves, limit components, and dial indicators; The gripper is directly or indirectly hinged to the rotating end of the drive component, and the sleeve is placed on the clamping block to prevent the sleeve from shifting in a direction perpendicular to the sleeve axis. The rotating end of the drive component is located inside the sleeve; the sleeve abuts against the gripper; when the sleeve moves along the axis of the sleeve, the gripper can clamp and release. The limiting member is used to fix the sleeve after the sleeve has moved; The gripper is used to hold the workpiece to be inspected, which has a circular surface, and the probe of the dial indicator abuts against the circular surface of the workpiece to be inspected.

2. The gripper-type circular runout gauge according to claim 1, characterized in that: A first inclined surface is formed on the sleeve, and a second inclined surface is formed on the gripper for engaging with the first inclined surface; The gripper forms a clamping surface on the side opposite to the second inclined plane for clamping the workpiece to be inspected.

3. The gripper-type circular runout gauge according to claim 1, characterized in that: The limiting component includes: a first insertion tube and a second insertion tube; the first insertion tube is sleeved onto the rotating end, and the second insertion tube is sleeved onto the first insertion tube; The second insertion tube is threadedly connected to the first insertion tube; The rotating end has an abutment surface for limiting the first insertion tube, and the second insertion tube abuts against the end of the sleeve.

4. The gripper-type circular runout gauge according to claim 3, characterized in that: An abutment portion is formed on the first cannula, and the abutment face limits the abutment portion; The abutting portion protrudes outward relative to the outer wall surface of the first insertion tube.

5. The gripper-type circular runout gauge according to claim 4, characterized in that: A thrust bearing is also provided on the rotating end, and the thrust bearing is disposed between the abutting surface and the abutting part; The contact surface limits the contact portion by the thrust bearing.

6. The gripper-type circular runout gauge according to claim 3, characterized in that: The second insertion tube is provided with a threaded hole, which penetrates the tube wall of the second insertion tube along the axis of the second insertion tube; A screw is provided in the threaded hole, and the screw is used to abut against the first insertion tube.

7. The gripper-type circular runout gauge according to claim 1, characterized in that: The driving component also includes a claw seat, which is fixed to the rotating end; Multiple slots are formed on the claw base, and one end of the claw is inserted into the slot; A hinge rod is provided in the slot, and the hinge rod passes through the claw seat and the gripper so that the gripper is hinged to the claw seat.

8. The gripper-type circular runout gauge according to claim 2, characterized in that: The workpiece to be inspected is a boss; the gripper holds the protruding part of the boss.

9. The gripper-type circular runout gauge according to claim 8, characterized in that: The gripper also forms a connecting surface perpendicular to the clamping surface; when the clamping surface clamps the protruding part of the boss body, the connecting surface fits against another part of the boss body.

10. The gripper-type circular runout gauge according to claim 9, characterized in that: The sandwich surface and the connecting surface are perpendicular.

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