Novel mandrel phase positioning gauge device and use method thereof

Abstract

The invention belongs to the technical field of processing of mandrels of large extrusion granulation units, and discloses a novel mandrel phase positioning gauge device and a use method thereof. Comprising a gauge body, a guide block, an alignment device main body, a measuring bar, a locking screw and a screw, the gauge body is n-shaped, and the two ends of the gauge body are connected with the alignment device body through the locking screws and the screws respectively. A guide block passes through the end part of the testing fixture body and the alignment device main body; one end of the guide block is a tooth-shaped clamping block, and the other end is connected with the measuring bar; the axis of the tooth-shaped clamping block and the axis of the measuring rod are located on the same plane. A mandrel is arranged between the two measuring rods; and the locking screw is used for locking the alignment device main body and the guide block. By means of the device, the phase precision of the mandrel is improved to be within 0.05 mm from 0.1 mm or above, and the phase machining efficiency of the mandrel is improved to 0.5 h from 16 h.

Description

Technical Field

[0001] The invention relates to the technical field of core shaft processing of a large-scale extrusion granulation unit, and in particular to a novel core shaft phase positioning inspection fixture device and a use method thereof. Background Art

[0002] The large extrusion granulation unit is a key localization research project in my country's petrochemical industry. With the joint efforts of many units, my country has broken the technical monopoly and blockade of Germany and Japan and become the third country capable of producing this unit, fully maintaining the security of the country's petrochemical industry. As the core component of the unit, improving its processing accuracy and phase processing accuracy is of great significance.

[0003] In the processing of the mandrel, since the number of teeth of the long spline and the short spline at both ends of the mandrel are different, it is necessary to ensure that the basic starting phase of the two splines remains consistent during the processing to ensure the normal use of the subsequent mandrel. In the current mandrel processing technology, after the long spline of the mandrel is hobbed, the short spline needs to be processed by the machining center to ensure that the short spline and the long spline are in phase. This involves multiple processing procedures and multiple transfers, resulting in low processing efficiency and low processing accuracy. Summary of the invention

[0004] In order to solve the problem of multiple rotations of the mandrel during machining, improve the phase positioning accuracy, improve the positioning efficiency, and thus achieve improved machining efficiency and machining accuracy, the present invention proposes a novel mandrel phase positioning fixture device and a method of using the same.

[0005] The technical solution of the present invention is as follows: a new type of mandrel phase positioning inspection device, comprising an inspection body 1, a guide block 2, an alignment device body 3, a measuring rod 4, a locking screw 5 and a screw 6; the inspection body 1 is in the shape of a gate, comprising a horizontal bar and two vertical bars; the ends of the vertical bars are connected to the alignment device body 3 through locking screws 5 and screws 6 respectively; the guide block 2 passes between the end of the inspection body 1 and the alignment device body 3; the two ends of the guide block 2 are toothed blocks, both of which are provided with V-shaped grooves, one end of which is clamped with a measuring rod 4; the axis of the toothed block and the axis center line of the measuring rod 4 are located in the same plane; a mandrel is placed between the two measuring rods 4; the locking screw 5 is used to lock the alignment device body 3 and the guide block 2.

[0006] The alignment device body 3 includes a U-shaped block, the guide block 2 is placed in the U-shaped block, and the end of the inspection body 1 presses the guide block 2; the locking screw 5 passes through the U-shaped block and fixes the guide block 2.

[0007] A through hole is provided at the center of the crossbar of the inspection body 1 for installing an auxiliary support rod.

[0008] The method for using the novel mandrel phase positioning gauge device comprises the following steps:

[0009] Step 1, assemble the new mandrel phase positioning inspection device, position the new mandrel phase positioning inspection device on the long end spline processed by the mandrel through the measuring rod 4, and fix it with the locking screw 5;

[0010] Step 2: Use the through hole in the center of the crossbar to install the auxiliary support rod to perform auxiliary support for the mandrel positioning. Install a dial indicator at the center of the crossbar to monitor the support strength.

[0011] Step 3, fix the micrometer on the equipment tool, and check whether the equipment tool is level with the upper end face of the top crossbar; use the micrometer to align the positioning reference surface of the crossbar, and control the alignment accuracy within 0.005mm. After the positioning reference surface of the crossbar is aligned, control the center line of the V-shaped groove at the lower end of the new mandrel phase positioning fixture to be parallel to the upper end face of the top crossbar of the device, and the parallel accuracy of the entire length of the top crossbar is within 0.01mm; the tooling groove is realized to coincide with the center of the spline tooth groove at the long end of the mandrel, and is in the absolute horizontal center position of the mandrel;

[0012] Step 4: Use a dial indicator to detect and determine the center position of the tool and position the tool; confirm that the tool processing starting angle and tool center height are consistent, and the tool center and spindle center height are consistent;

[0013] Step 5. Use the positioning tool to align the tool groove, use a feeler gauge to determine the accuracy of the tool and the tool groove, and control the tool accuracy within 0.01mm; the spindle phase positioning is completed, the tool processing starting angle and the tool center height remain unchanged, and the short end spline of the spindle is positioned to the new spindle phase positioning inspection fixture to start processing the spline part on the right end of the spindle.

[0014] Beneficial effects of the present invention: Through the device of the present invention, the axis of the toothed block and the axis of the measuring rod 4 are located in the same plane, the phase accuracy of the mandrel is improved from more than 0.1mm to within 0.05mm, and the mandrel phase processing efficiency improvement target is improved from 16 hours to 0.5 hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a new type of mandrel phase positioning inspection fixture.

[0016] Figure 2 This is a schematic diagram of the working structure of the new mandrel phase positioning fixture device.

[0017] In the figure: 1- inspection body; 2- guide block; 3- main body of the alignment device; 4- measuring rod; 5- locking screw; 6- screw. DETAILED DESCRIPTION

[0018] The novel mandrel phase positioning inspection device of the present invention is composed of an inspection body 1, two guide blocks 2, two measuring rods 4 and a locking screw 5, and the upper end of the guide block 2 is a clamping block.

[0019] Make a new type of mandrel phase positioning fixture such as Figure 1 As shown, after the long spline is processed, the device is used to quickly position it, thereby eliminating the process of marking in the machining center and directly using the gear hobbing machine to process the short spline end.

[0020] Step 1: Make a Figure 1 The device of the shape shown is positioned on the long end spline of the mandrel by using a standard measuring rod 4 and fixed by using a locking screw 5;

[0021] Step 2: Use the upper positioning base surface M20 screw to install it into the center through hole of the crossbar to perform auxiliary support for tooling positioning, and use a dial indicator to monitor the support strength;

[0022] Step 3: Use a micrometer to align the upper positioning reference surface with an accuracy within 0.005mm. After the positioning base surface is aligned, the tool groove of the tooling will coincide with the center of the reference spline tooth groove on the left end of the mandrel and will be at the absolute horizontal center position of the mandrel.

[0023] Step 4: Use a dial indicator to detect and determine the center position of the tool and the highest point of the tool to locate the tool;

[0024] Step 5: Use the positioning tool to align the tool groove, and use a feeler gauge to determine the accuracy of the tool and the tool groove. The tool accuracy is controlled at about 0.01mm; the phase positioning of the mandrel is completed, and the spline part on the right end of the mandrel is processed.

[0025] The present invention ensures consistency in the starting phases of the long spline and the short spline by using a measuring rod of a novel mandrel phase positioning gauge device after the machining starting angle of the tool and the center height of the tool are determined.

Claims

1. A new type of mandrel phase positioning fixture, characterized in that: The novel spindle phase positioning inspection device comprises an inspection body (1), a guide block (2), an alignment device body (3), a measuring rod (4), a locking screw (5) and a screw (6); the inspection body (1) is in the shape of a gate, comprising a horizontal rod and two vertical rods; the ends of the vertical rods are connected to the alignment device body (3) through the locking screw (5) and the screw (6) respectively; the guide block (2) passes between the end of the inspection body (1) and the alignment device body (3); the two ends of the guide block (2) are toothed blocks, both of which are provided with V-shaped grooves, one end of which is clamped with the measuring rod (4); the axis of the toothed block and the axis center line of the measuring rod (4) are located in the same plane; the spindle is placed between the two measuring rods (4); the locking screw (5) is used to lock the alignment device body (3) and the guide block (2).

2. The novel mandrel phase positioning fixture device according to claim 1 is characterized in that: The alignment device body (3) comprises a U-shaped block, the guide block (2) is placed in the U-shaped block, and the end of the inspection body (1) presses the guide block (2); the locking screw (5) passes through the U-shaped block and fixes the guide block (2).

3. The novel mandrel phase positioning gauge device according to claim 1 or 2, characterized in that: A through hole is provided at the center of the crossbar of the inspection body (1) for installing an auxiliary support rod.

4. A method for using the novel mandrel phase positioning gauge device according to any one of claims 1 to 3, characterized in that: The steps include: Step 1: Assemble the new mandrel phase positioning inspection device, position the new mandrel phase positioning inspection device on the long end spline processed by the mandrel by using the measuring rod (4), and fix it by using the locking screw (5); Step 2: Use the through hole in the center of the crossbar to install the auxiliary support rod to perform auxiliary support for the mandrel positioning. Install a dial indicator at the center of the crossbar to monitor the support strength. Step 3, fix the micrometer on the equipment tool, and check whether the equipment tool is level with the upper end face of the top crossbar; use the micrometer to align the positioning reference surface of the crossbar, and control the alignment accuracy within 0.005mm. After the positioning reference surface of the crossbar is aligned, control the center line of the V-shaped groove at the lower end of the new mandrel phase positioning fixture to be parallel to the upper end face of the top crossbar of the device, and the parallel accuracy of the entire length of the top crossbar is within 0.01mm; the tooling groove is realized to coincide with the center of the spline tooth groove at the long end of the mandrel, and is in the absolute horizontal center position of the mandrel; Step 4: Use a dial indicator to detect and determine the center position of the tool and position the tool; confirm that the tool processing starting angle and tool center height are consistent, and that the tool center and spindle center height are consistent; Step 5. Use the positioning tool to align the tool groove, use a feeler gauge to determine the accuracy of the tool and the tool groove, and control the tool accuracy within 0.01mm; the spindle phase positioning is completed, the tool processing starting angle and the tool center height remain unchanged, and the short end spline of the spindle is positioned to the new spindle phase positioning inspection fixture to start processing the spline part on the right end of the spindle.

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