Cylindricity testing tool for cylinder body valve plate crankshaft tube

Abstract

The utility model discloses a cylindricity testing tool for a cylinder body valve plate crankshaft tube, a cylinder body valve plate tested by the testing tool is of an L-shaped structure, one end of the cylinder body valve plate is fixedly provided with a transverse tube extending in the X direction, the middle part of the other end of the cylinder body valve plate is provided with a crankshaft tube extending in the Z direction, and two ends of the cylinder body valve plate are provided with bottom claw threaded holes recessed in the Z direction; the testing tool positions the crankshaft tube of the cylinder block valve plate on a lathe three-axis chuck in a coaxial posture, the testing tool comprises a lathe chuck and a supporting block, the lathe chuck fixes the supporting block protruding in the Z direction on the XY plane, the top face of the supporting block elastically abuts against the Z direction, and a Y-direction bolt abuts against and is internally connected with the crankshaft tube of the cylinder block valve plate in an inserted mode. The crankshaft tube and the annular chamfer at the open end of the top of the crankshaft tube are coaxial with the lathe chuck. The detection tool can be fixedly arranged on a three-jaw chuck of a lathe, is matched with the detection end of the dial indicator to be attached to the annular chamfer of the crankshaft tube along with rotation of a spindle of the lathe so as to detect the cylindricity of the crankshaft tube, and is simple in structure and easy to implement.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a cylindricity testing tool for cylinder block valve plate crankshaft tube. Background Technology

[0002] In the existing machining field, it is difficult to inspect the dimensions of various parts of irregularly shaped workpieces, especially blanks. Usually, the drawings require the dimensions from the center hole to one side, or the width / length dimensions after the two sides are aligned, or the distance between holes and the perpendicularity between holes.

[0003] However, since the surface of irregularly shaped workpieces is unprocessed, it is difficult to find standard reference surfaces or reference points, making it difficult to measure and verify the dimensions of specific parts of the workpiece as planned in the drawings. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a cylindricity testing tool for cylinder block valve plate crankshaft tubes. This tool can be fixed on a lathe three-jaw chuck, and rotates with the lathe spindle to cooperate with the dial indicator's testing end to fit against the annular chamfer of the crankshaft tube, so as to test the cylindricity of the crankshaft tube. The tool has a simple structure and is easy to implement.

[0005] To solve the above problems, this utility model provides a cylindricity tester for cylinder valve plate crankshaft tube. The cylinder valve plate tested by the tester has an L-shaped structure. One end of the cylinder valve plate is fixed with a horizontal tube extending in the X direction, and the other end of the cylinder valve plate is provided with a crankshaft tube extending in the Z direction. Both ends of the cylinder valve plate are provided with Z-direction recessed bottom claw threaded holes.

[0006] The fixture positions the crankshaft tube of the cylinder valve plate in a coaxial position on a three-axis lathe chuck. The fixture includes a lathe chuck and a support block. The lathe chuck fixes the support block protruding in the Z direction on the XY plane. The top surface of the support block provides elastic support in the Z direction, is tightened by Y-direction bolts, and internally supports the crankshaft tube of the cylinder valve plate. The crankshaft tube and the annular chamfer at its top opening end are coaxial with the lathe chuck.

[0007] Preferably, the top of the support block has a Z-shaped recessed insertion hole, and an inner support column is fixed in the Z direction inside the insertion hole, wherein the outer diameter of the inner support column is smaller than the inner diameter of the insertion hole; a support spring is sleeved on the inner support column, and a support ring is fixed on the top of the spring to adjust and seal the top opening of the insertion hole, and the bottom of the spring elastically abuts against the axial end face of the bottom of the insertion hole.

[0008] Preferably, the side wall of the support block is provided with a screw hole with a radially communicating insertion hole, and a Y-direction abutment bolt is connected to the screw hole by thread engagement; the threaded section of the Y-direction abutment bolt penetrates the screw hole and radially abuts against the outer wall of the crankshaft tube inside the insertion hole.

[0009] Preferably, the top surface of the support block is symmetrically provided with a Z-direction convex threaded hole pin rod across the middle, which is inserted into the bottom claw threaded hole, and the threaded hole pin rod is limited to rotate on the top surface of the support block to support the cylinder valve piece.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] The utility model discloses a kind of cylindricity of cylinder valve piece crankshaft pipe, and the cylinder valve piece is positioned coaxially on lathe three-jaw chuck by lathe chuck and support block, during positioning process, crankshaft pipe is positioned coaxially by insertion hole and inner support column, and crankshaft pipe is provided with uniform Z-direction support force by support ring and support spring, finally, crankshaft pipe is locked by Y-direction support bolt in insertion hole and is radially supported, when detecting, the annular chamfer of detection end adhering crankshaft pipe open end is detected by micrometer, and the cylindricity of crankshaft pipe is verified by observing micrometer reading. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0013] Figure 1 It is a three-dimensional structure schematic view (cylinder valve piece inspection attitude) of the utility model;

[0014] Figure 2 It is a three-dimensional structure schematic view (cylinder valve piece inspection attitude) of the utility model;

[0015] Figure 3 It is a top view (cylinder valve piece inspection attitude) of the utility model;

[0016] Figure 4 It is a half-sectional view (cylinder valve piece inspection attitude) of the utility model;

[0017] Figure 5 It is a half-sectional view (cylinder valve piece inspection attitude) of the utility model;

[0018] In the figure: 1-lathe chuck; 2-support block; 3-cylinder valve piece; 4-crankshaft pipe; 5-inner support column; 6-cross pipe; 7-Y-direction support bolt; 8-threaded hole pin rod; 9-support ring; 10-insertion hole; 11-screw hole; 12-support spring. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The utility model will be further described in detail below in combination with the drawings.

[0022] In combination Figures 1-5 , a kind of cylindricity gauge of the cylinder valve piece crankshaft pipe of the present utility model, the cylinder valve piece 3 tested by the gauge is L-shaped structure, one end of cylinder valve piece is fixed with X direction extension cross pipe 6, the other end of cylinder valve piece is provided with Z direction extension crankshaft pipe 4, and the both ends of cylinder valve piece are provided with Z direction recessed bottom claw threaded hole;

[0023] The gauge positions the crankshaft pipe of cylinder valve piece in coaxial attitude on lathe three-spindle chuck, the gauge includes lathe chuck 1 and support block 2, wherein the lathe chuck is fixed Z direction protruding support block on XY plane, the top surface of the support block is elastically supported, Y direction bolt is tightly clamped and internally supports and inserts the crankshaft pipe of cylinder valve piece;The annular chamfer of the crankshaft pipe and its top open end is coaxial with the lathe chuck.

[0024] Preferably, the top of the support block is provided with a Z-direction downward recessed insertion hole 10, a Z-direction inner support column 5 is fixedly arranged in the insertion hole, wherein the outer diameter of the inner support column is smaller than the inner diameter of the insertion hole;A supporting spring 12 is sleeved on the inner support column, the top of the spring is fixedly provided with a supporting ring 9 for blocking the top opening of the insertion hole, and the bottom of the spring is elastically supported on the axial end face at the bottom of the insertion hole.

[0025] Preferably, a screw hole 11 radially communicating with the insertion hole is formed in the side wall of the support block, and a Y-direction supporting bolt 7 is threadedly connected in the screw hole;The threaded section of the Y-direction supporting bolt penetrates the screw hole and radially supports the outer wall of the crankshaft pipe in the insertion hole.

[0026] Preferably, a Z-direction upward protruding threaded hole pin rod 8 is symmetrically fixed on the top surface of the support block, the threaded hole pin rod is inserted into the bottom claw threaded hole in Z direction, and the rotation of the threaded hole pin rod on the top surface of the support block limits and supports the cylinder valve piece.

[0027] The working principle of the utility model is:

[0028] The utility model discloses a kind of cylindricity of cylinder valve piece crankshaft pipe, and the following inspection steps are as follows:

[0029] 1, first chuck coaxially fixed in lathe chuck, slow start lathe spindle, with dial gauge detection end adheres to lathe chuck circumferential outer wall, by observing dial gauge reading adjustment lathe chuck and lathe chuck coaxial degree of three-jaw chuck;

[0030] 2, cylinder valve piece is inserted into support block with XY plane horizontal posture, during insertion process, bottom claw threaded hole is sleeved on threaded hole pin rod;Crankshaft pipe is inserted into insertion hole, at this time, crankshaft pipe inner wall gap fit and slide on inner support column, the axial end surface Z of crankshaft pipe is pressed and abuts against support ring, keep the uniform support force of support ring to crankshaft pipe bottom end and then tighten Y direction support bolt, to fix and press crankshaft pipe in insertion hole;

[0031] 3, start lathe spindle, first, the detection end of dial gauge is adhered to inner support column top surface, with dial gauge reading finds the axis of lathe spindle, lathe chuck, insertion hole and inner support column;After positioning, adjust dial gauge detection end to the annular chamfer of crankshaft pipe open end, to inspect the cylindricity of crankshaft pipe.

[0032] The above describes the utility model and its implementation mode, this kind of description has no limit, and only one of the embodiments of the utility model is shown in the drawing, and the actual structure is not limited to this. In short, if the ordinary skilled person in the art is inspired, without departing from the utility model creation purpose, without creative design, similar structure mode and embodiment to the technical scheme, all should belong to the protection scope of the utility model.

Claims

1. A cylindricity tester for a cylinder valve plate crankshaft tube, wherein the cylinder valve plate being tested by the tester has an L-shaped structure, one end of the cylinder valve plate is fixed with a transverse tube extending in the X direction, the other end of the cylinder valve plate is provided with a crankshaft tube extending in the Z direction, and both ends of the cylinder valve plate are provided with Z-direction recessed bottom claw threaded holes. Its features are: The fixture positions the crankshaft tube of the cylinder valve plate in a coaxial position on a three-axis lathe chuck. The fixture includes a lathe chuck and a support block. The lathe chuck fixes the support block protruding in the Z direction on the XY plane. The top surface of the support block provides elastic support in the Z direction, is tightened by a Y-direction bolt, and internally supports the crankshaft tube of the cylinder valve plate. The crankshaft tube and the annular chamfer at its top opening end are coaxial with the lathe chuck.

2. The cylindricity testing tool for cylinder block valve plate crankshaft tube according to claim 1, characterized in that: The top of the support block has a Z-shaped recessed insertion hole, and an inner support column is fixed in the Z direction inside the insertion hole. The outer diameter of the inner support column is smaller than the inner diameter of the insertion hole. A support spring is sleeved on the inner support column. The top of the spring is fixed with a support ring that adjusts and seals the top opening of the insertion hole, and the bottom of the spring elastically abuts against the axial end face of the bottom of the insertion hole.

3. The cylindricity testing tool for cylinder block valve plate crankshaft tube according to claim 2, characterized in that: The side wall of the support block is provided with a screw hole with a radially connected insertion hole. A Y-direction abutment bolt is connected to the screw hole by a threaded connection. The threaded section of the Y-direction abutment bolt penetrates the screw hole and radially abuts against the outer wall of the crankshaft tube inside the insertion hole.

4. The cylindricity testing tool for cylinder block valve plate crankshaft tube according to claim 1, characterized in that: The top surface of the support block is symmetrically fixed with threaded pins that convex upwards in the Z direction. The threaded pins are inserted into the threaded holes of the bottom claws in the Z direction, and the cylinder valve plate is supported by the rotation limit of the threaded pins on the top surface of the support block.

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