Clamping flatness detection tool

Abstract

The utility model relates to a flatness detection tool, in particular to a clamping flatness detection tool. Comprising a fixed base and a detection seat detachably and fixedly connected with the fixed base; the detection seat comprises a connecting base and an air tightness detection seat, and the connecting base is fixedly connected with the air tightness detection seat; the air tightness detection seat comprises a base and a detection column, the base is provided with a plurality of shunting air holes along the radial direction, and the detection column is provided with a detection air channel communicated with the shunting air holes; the number of the detection columns is the same as that of the shunting air holes; the clamping flatness detection tool adopting the scheme has the advantages of being simple in structure, easy to process, few in sealing point positions and stable in air tightness.

Description

Technical Field

[0001] The utility model relates to a flatness detection tool, in particular to a clamping flatness detection tool. Background Art

[0002] For workpieces processed on a lathe, it's crucial to ensure the workpiece's flatness after clamping, thereby ensuring machining accuracy. For example, a gear's reference end face is a plane perpendicular to the gear axis. This plane is generally used to determine the gear's geometric dimensions and position, as well as its coordination with other mechanical components. Therefore, a high degree of flatness is required to ensure accurate fit between gears. Therefore, improving the flatness of the gear during clamping is crucial.

[0003] Chinese patent publication number CN220497971U discloses a "gear leveling and positioning assembly" whose injection rod position can be adjusted according to the gear diameter. When testing gears of varying diameters, all three injection rods must be adjusted into position. Furthermore, to ensure airtightness before and after adjustment, the assembly requires a complex structure and high-precision machining of components, resulting in high costs. Due to the numerous sealing points, airtightness cannot be guaranteed even after multiple adjustments, leading to inaccurate measurement results. Utility Model Content

[0004] The utility model aims to provide a clamping flatness detection tool, which has the advantages of simple structure, few sealing points, easy processing, quick replacement and stable air tightness.

[0005] The clamping flatness detection tool in this solution includes a fixed base and a detection part that is detachably fixed to the fixed base; that is, the connecting base supports quick replacement, and different airtight detection seats can be quickly replaced for gears of different diameters. Specifically, the detection part can be connected to the fixed base by bolts or pressed onto the fixed base by a clamp. A first air inlet hole connected to the high-pressure air pipe is provided in the fixed base, and the first air inlet hole is arranged along the axial direction of the fixed base; the detection part includes an air inlet seat and a plurality of airtight detection columns, and the cross-section of the airtight detection column can be selected as a circular, square, polygonal or other column, preferably a square column. The airtight detection columns are evenly distributed on the circumference of the air inlet seat and are arranged along the axial direction of the air inlet seat. The end of the airtight detection column that abuts the workpiece is the detection end face, and the detection end face is higher than the detection part. The detection end face is provided with a detection air hole connected to the first air inlet hole.

[0006] Furthermore, the air inlet seat includes a coaxially arranged and fixedly connected connecting base and detection base, the airtightness detection column is located on the periphery of the detection base; the detection base is provided with a plurality of diverter holes arranged along its radial direction, the number of diverter holes being the same as the airtightness detection columns. The diverter holes are connected to the detection holes; the connecting base is provided with a second air inlet hole arranged along its axial direction, one end of the second air inlet hole being connected to the diverter hole and the other end being connected to the first air inlet hole.

[0007] Furthermore, the detection portion further includes a plurality of connecting arms. Preferably, there are three connecting arms, and the connecting arms are evenly distributed around the circumference of the connecting base and arranged along its radial direction.

[0008] Furthermore, the device further includes a limiting groove located on the lower end surface of the detection base, with the diverter holes both connected to the limiting groove; a first limiting boss and a second limiting boss are respectively provided at the two ends of the second air inlet hole, the first limiting boss being engaged with the limiting groove, and the second limiting boss being engaged with the first air inlet hole, facilitating the positioning connection of the connection base.

[0009] Furthermore, the connecting base is provided with a first positioning groove adapted to the detection seat; the detection column is arranged opposite to the connecting arm, and the connecting arm is provided with a second positioning groove adapted to the detection column.

[0010] Furthermore, the detection air holes are stepped holes, and the diameter of the air holes close to the workpiece is larger to ensure the air flow of the detection air holes. A sealing plug is provided on the side of the detection column.

[0011] Furthermore, a bevel column pull-back chuck is provided on the fixed base, and the bevel column pull-back chuck includes a plurality of guide bevel columns arranged in a ring, and the guide bevel columns are fixedly connected with claws. The bevel column pull-back chuck adopts a three-jaw chuck, which can meet the requirements of workpiece limitation and fixation.

[0012] The advantages of the present invention are: (1) The connecting base and the airtightness detection seat are fixedly connected as a whole. By disassembling and installing the connecting base, different airtightness detection seats can be quickly replaced to adapt to the detection of gears with different diameters. (2) Before and after replacement, it is only necessary to ensure the airtightness of the air duct between the connecting base and the fixed base, and the sealing of other components such as the air duct is not involved. The replacement is simple and quick. (3) The airtightness detection seat is fixedly connected to the connecting base and does not require adjustment. The components are easy to process; there are fewer sealing points and the airtightness is stable. (4) An inclined column pull-back chuck is provided on the fixed base. When the jaws clamp radially, they have obvious axial pull-back action. This helps to axially position the gear and the jaws are automatically centered. The jaws support quick replacement and have low use and maintenance costs. (5) Since large and medium-sized manufacturing companies usually set up multiple detection fixtures, different sizes of detection seats can be connected according to the detection products, which is suitable for a large number of gear reference end face flatness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the clamping flatness detection tooling of the utility model;

[0014] Figure 2 This is an exploded view of the clamping flatness detection tooling of the utility model;

[0015] Figure 3 This is a top view of the clamping flatness detection tooling of the utility model;

[0016] Figure 4 for Figure 3 Sectional view of AA

[0017] Figure 5 for Figure 4 Enlarged view of B

[0018] Figure 6 This is a structural schematic diagram of the detection part in the clamping flatness detection tooling of the utility model.

[0019] In the figure, 1 is a fixed base, 1-1 is a first air inlet hole, 2 is a detection part, 2-1 is a connecting base, 2-12 is a second air inlet hole, 2-13 is a first limiting boss, 2-14 is a second limiting boss, 2-15 is a first positioning groove, 2-2 is a detection seat, 2-21 is a diverter air hole, 2-22 is a limiting groove, 2-23 is an annular groove, 2-3 is an airtight detection column, 2-31 is a detection end face, 2-32 is a detection air hole, 2-4 is a connecting arm, 2-41 is a second positioning groove, 2-5 is a sealing plug, 2-6 is a sealing ring, 3 is a tilted column pull-out chuck, and 4 is a workpiece. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] according to Figures 1 to 6As shown, the present solution provides a clamping flatness detection tool, including a fixed base 1 and a detection part 2. The detection part 2 can be connected to the fixed base 1 by bolts or pressed onto the fixed base 1 by a clamp, so that the connecting base 2-1 supports quick replacement, and different airtight detection seats 2-2 can be quickly replaced for gears of different diameters. A first air inlet hole 1-1 connected to the high-pressure air pipe is provided in the fixed base 1, and the first air inlet hole 1-1 is arranged along the axial direction of the fixed base 1. The detection part 2 includes an air inlet seat, three airtight detection columns 2-3, and the air inlet seat includes a connecting base 2-1 and a detection seat 2-2 that are coaxially arranged and bolted. The three airtight detection columns 2-3 are located on the circumferential side of the detection seat 2-2 and are arranged along the axial direction of the air inlet seat. Preferably, the detection column and the detection seat 2-2 are arranged integrally. The end of the airtight detection column 2-3 that abuts against the workpiece 4 is the detection end face 2-31. The detection end face 2-31 is higher than the detection part 2. The detection end face 2-31 is provided with a detection air hole 2-32 connected to the first air inlet 1-1. Three diversion air holes 2-21 arranged along its radial direction are provided in the detection seat 2-2. The diversion air holes 2-21 are connected to the detection air holes 2-32. A sealing plug 2-5 is provided on the side of the detection column. The connecting base 2-1 is provided with a second air inlet 2-12 arranged along its axial direction. One end of the second air inlet 2-12 is connected to the diversion air hole 2-21, and the other end is connected to the first air inlet 1-1. When in use, the detection end faces 2-31 of the three detection columns are simultaneously abutted against the gear reference end face, that is, the detection air hole 2-32 is blocked by the gear reference end face. If the leakage is less than the specified value after the high-pressure gas is introduced, the flatness test of the gear reference end face is qualified. Otherwise, the flatness of the gear reference end face will fail to meet the requirements.

[0022] As a further improvement to the present invention, a limiting groove 2-22 is defined on the lower end surface of the detection base 2-2, and the three diverter holes 2-21 are all connected to the limiting groove 2-22. A first limiting boss 2-13 and a second limiting boss 2-14 are respectively provided at the two ends of the second air inlet 2-12. The first limiting boss 2-13 is engaged with the limiting groove 2-22. The first limiting boss 2-13 is engaged within the limiting groove 2-22, and the second limiting boss 2-14 is engaged with the first air inlet 1-1. The first limiting boss 2-13 is also sleeved with a sealing ring 2-6, which is squeezed and sealed by the detection base 2-2 and the connecting base 2-1. Preferably, the lower end surface of the detection seat 2-2 is also provided with an annular groove 2-23 that can accommodate the sealing ring 2-6. When the sealing ring 2-6 is squeezed and deformed in the annular groove 2-23, the detection seat 2-2 and the connecting base 2-1 can fit tightly, the connection is more stable, and the integrity is good.

[0023] As a further improvement of the present invention, the detection part 2 also includes a plurality of connecting arms 2-4, which are evenly distributed on the circumference of the connecting base 2-1 and arranged along its radial direction. The connecting arms 2-4 and the connecting base 2-1 are preferably an integral structure. Specifically, the connecting arms 2-4 can be connected to the fixed base 1 by bolts or pressed onto the fixed base 1 by a clamp to achieve rapid replacement of the connecting base 2-1. The connecting base 2-1 is provided with a first positioning groove 2-15 adapted to the detection seat 2-2; the detection column and the connecting arm 2-4 are arranged opposite to each other, and the connecting arm 2-4 is provided with a second positioning groove 2-41 adapted to the detection column. It is convenient for clamping and positioning to prevent interference between the connecting arm 2-4, the detection column and the claws that clamp the workpiece 4.

[0024] As a further improvement of the present invention, the detection air hole 2-32 is a stepped hole. In order to ensure the air flow of the detection air hole, preferably, the diameter of the air hole close to the workpiece is larger.

[0025] As a further improvement of the present invention, an inclined column pull-back chuck 3 is provided on the fixed base 1. The inclined column pull-back chuck 3 includes a plurality of guide inclined columns arranged in a ring, and claws are fixedly connected to the guide inclined columns. Specifically, the guide inclined columns are evenly distributed around the first air inlet 1-1, and the upper ends of the guide inclined columns are bolted with claws. When the guide inclined columns move downward along their axial direction, the claws move along and clamp the workpiece 4. The inclined column pull-back chuck 3 helps in the axial positioning of the workpiece 4 and the automatic centering of the claws. Since the workpiece 4 in this embodiment is a disc structure, the inclined column pull-back chuck 3 adopts a three-jaw chuck, which can meet the requirements of limiting and fixing the workpiece 4.

[0026] For workpieces that need to be processed on a lathe, the utility model can detect the clamping flatness thereof.

[0027] The above description is merely an embodiment of the present invention. The well-known specific structures and characteristics of the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness of the implementation of the present invention or the practical application of the patent.

Claims

1. Clamping flatness detection tool, characterized by: It includes a fixed base and a detection part that is detachably fixed to the fixed base; a first air inlet hole connected to the high-pressure air pipe is provided in the fixed base, and the first air inlet hole is arranged along the axial direction of the fixed base; the detection part includes an air inlet seat and multiple airtight detection columns, the airtight detection columns are evenly distributed on the circumference of the air inlet seat and are arranged along the axial direction of the air inlet seat, the end of the airtight detection column that is against the workpiece is the detection end face, the detection end face is higher than the detection part, and the detection end face is provided with a detection air hole connected to the first air inlet hole.

2. The clamping flatness detection tool according to claim 1, characterized in that: The air inlet seat includes a connecting base and a detection seat that are coaxially arranged and fixedly connected, and the airtight detection column is located on the circumferential side of the detection seat; a plurality of diversion air holes are arranged along its radial direction in the detection seat, and the diversion air holes are connected to the detection air holes; the connecting base is provided with a second air inlet hole arranged along its axial direction, and one end of the second air inlet hole is connected to the diversion air hole, and the other end is connected to the first air inlet hole.

3. The clamping flatness detection tool according to claim 2, characterized in that: The detection portion further includes a plurality of connecting arms, which are evenly distributed around the circumference of the connecting base and arranged along its radial direction.

4. The clamping flatness detection tool according to claim 2, characterized in that: It also includes a limiting groove, which is located on the lower end surface of the detection seat; the two ends of the second air inlet are respectively provided with a first limiting boss and a second limiting boss, the first limiting boss is clamped with the limiting groove, and the second limiting boss is clamped with the first air inlet.

5. The clamping flatness detection tool according to claim 3, characterized in that: The connecting base is provided with a first positioning groove adapted to the detection seat; the detection column is arranged opposite to the connecting arm, and the connecting arm is provided with a second positioning groove adapted to the detection column.

6. The clamping flatness detection tool according to claim 1, characterized in that: The detection pore is a stepped hole; A sealing plug is provided on the side of the detection column.

7. The clamping flatness detection tool according to claim 1, characterized in that: An inclined column back-pull type chuck is provided on the fixed base. The inclined column back-pull type chuck includes a plurality of guide inclined columns arranged in a ring shape. Clamping claws are fixedly connected to the guide inclined columns.

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