Calibration tool for positioning main shaft of large gantry machining center

Abstract

The utility model discloses a calibration tool for positioning a main shaft of a large gantry machining center. When a large gantry machining center is installed and debugged and the positioning operation of the main shaft is adjusted, the position of the main shaft can be rapidly calibrated. According to the technical scheme, the tool is composed of a mandrel, an auxiliary plate, a positioning block, a mandrel connecting bolt and a positioning block fastening bolt. The calibration tool can be used for rapidly and safely calibrating the position of the main shaft in a large gantry machining center, and compared with an existing adjustment technology, the adjustment time can be greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the auxiliary tool of large gantry machining center especially relates to a tool for the adjustment calibration of main shaft positioning of large gantry machining center. BACKGROUND

[0002] In the modern mechanical processing field, large gantry machining center is widely used in important industrial fields such as aerospace, automobile manufacturing, mould processing because it has the advantages of high machining precision, large machining range etc. However, with the continuous improvement of processing requirements, higher requirements are put forward to the accuracy of large gantry machining center main shaft positioning.

[0003] At present, in the use process of large gantry machining center, the accuracy of main shaft positioning is often influenced by various factors. On the one hand, due to the gap between large gantry machining center main shaft motor and main shaft, positioning deviation is prone to occur after long time running and frequent processing tasks. For example, mechanical vibration, temperature change and other factors can cause the actual position of the main shaft to deviate from the set position. On the other hand, the existing main shaft positioning calibration method and tool have certain limitations. The traditional calibration method may rely on manual experience, and the calibration precision is not high and the efficiency is low. And some existing calibration tools may not be suitable for the special structure of large gantry machining center, and cannot quickly position and calibrate the main shaft.

[0004] In addition, with the increasing diversification and complexity of processing tasks, the machining precision and efficiency of large gantry machining center are constantly improved. If the main shaft positioning is not accurate, not only will it increase the processing scrap rate, but also will it increase the probability of accessory grabbing failure, and even may cause safety accidents.

[0005] In summary, in order to solve the problem of inaccurate main shaft positioning of large gantry machining center and improve the machining precision and efficiency, it is urgent to need a calibration tool specially for the main shaft positioning of large gantry machining center. UTILITY MODEL CONTENT

[0006] The utility model is described in detail below in combination with the drawings and specific embodiments. Note that the aspects described below in combination with the drawings and specific embodiments are only exemplary and should not be understood as limiting the protection scope of the utility model.

[0007] The utility model aims at solving the above problems, provides a kind of tool and calibration method for the adjustment calibration of main shaft positioning of large gantry machining center, can be quickly positioned when installing and debugging large gantry machining center involves adjusting main shaft positioning operation, and calibrates main shaft.

[0008] The utility model discloses a technical scheme for: the utility model discloses a kind of tools for adjusting calibration of main shaft positioning of large gantry machining center, including:

[0009] Core shaft, core shaft center is designed as through-hole to reduce overall weight, one end is welded with thick gear that can be engaged with main shaft inner tooth, one end is processed with wide slot for the installation of auxiliary plate, overall length is designed with reference to the distance from the upper end surface of accessory driving gear to the contact surface of accessory and main shaft;

[0010] Auxiliary plate, it is a long strip steel piece, eleven holes of same diameter size have been drilled on it, the hole at both ends is not drilled through, for installing positioning block, the axis distance of two holes is equal to the axis distance of positioning block diagonally distributed on accessory upper side;8 holes on auxiliary plate except central hole and both end holes are distributed according to center line, which is mainly used for reducing counterweight;The middle part of auxiliary plate has threaded hole for installing core shaft, and the side for installing positioning block is mounting surface;

[0011] Positioning block, its overall shape is consistent with the positioning block of accessory, and is used as calibration block of the tool and accessory end surface positioning hole;And other fastening screws.

[0012] According to one embodiment of the calibration tool for main shaft positioning of large gantry machining center of the utility model, auxiliary plate will be installed to slotted end of core shaft by fastening bolt, and the central axis of the central hole will be coaxial with the axis of core shaft, and positioning block will be installed to both ends of auxiliary plate.

[0013] According to one embodiment of the calibration tool for main shaft positioning of large gantry machining center of the utility model, when core shaft gear end is completely engaged with main shaft inner tooth and touches the bottom end of main shaft, positioning block should be inserted into the positioning hole at the bottom end of main shaft box, and it is worth noting that, here, only the cylindrical part of positioning block needs to be inserted to ensure accurate positioning, without touching the bottom end of positioning hole.

[0014] According to one embodiment of the calibration tool for main shaft positioning of large gantry machining center of the utility model, the thickness of core shaft gear end gear should be less than the thickness of main shaft inner tooth ring gear.

[0015] The utility model has the following beneficial effects compared with prior art: the calibration tool of the utility model is composed of core shaft, auxiliary plate, positioning block and fastening screw, which can be used for quickly and safely positioning main shaft of large gantry machining center, and can greatly shorten the adjustment time compared with existing adjustment technology. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above-mentioned features and advantages of the present application can be better understood after reading the detailed description of embodiments of the present application in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related functions or features can have the same or similar reference numbers.

[0017] Figure 1 The overall appearance view of the present application is shown.

[0018] Figure 2 The front view and bottom view of the present application are shown.

[0019] Figure 3 The relative position relationship diagram of the main shaft box and the accessory of the large gantry machining center before adjustment is shown.

[0020] Figure 4 The overall appearance view of the accessory is shown.

[0021] Figure 5 The bottom end view of the main shaft box of the large gantry machining center is shown.

[0022] Figure 6 The side view of the embodiment of the calibration tool for the main shaft positioning of the large gantry machining center of the present application is shown.

[0023] Figure 7 The bottom view of the embodiment of the calibration tool for the main shaft positioning of the large gantry machining center of the present application is shown.

[0024] Figure 8 The sectional view of the embodiment of the calibration tool for the main shaft positioning of the large gantry machining center of the present application is shown.

[0025] Figure 9 The overall appearance and three views of the mandrel of the present application are shown.

[0026] Figure 10 The overall appearance and top and bottom views of the auxiliary plate of the present application are shown.

[0027] In the drawings, the following are marked: 1, mandrel; 2, auxiliary plate; 3, positioning block; 4, mandrel linking bolt; 5, positioning block fastening bolt; 6, accessory; 7, main shaft box; 8, cross beam; 9, stand column; 10, workbench; 60, accessory positioning block; 61, accessory pull pin; 62, driving gear; 70, main shaft box interior; 71, main shaft; 72, main shaft motor; 73, main shaft bearing; 74, positioning hole; 75, accessory clamping jaw. DETAILED DESCRIPTION

[0028] The utility model is described in detail below in combination with the drawings and specific embodiments. Note that the aspects described below in combination with the drawings and specific embodiments are only exemplary and should not be understood as limiting the protection scope of the utility model.

[0029] Figure 1 、 Figure 2 The basic appearance of the utility model, Figure 9 、 Figure 10 Respectively, two main components of the utility model: mandrel 1 and auxiliary plate 2. Figure 3 The working scene applicable to the utility model is shown. Figure 4 The relevant structure design of the utility model is applicable to the large gantry machining center accessory. Figure 6 to Figure 8 The embodiment analysis diagram of the calibration tool for spindle positioning of the large gantry machining center of the utility model is shown.

[0030] The following describes the process of rotating the spindle 71 to the set position by the calibration tool, ensuring that the inner ring gear of the spindle 71 meshes with the driving gear 62, and the accessory positioning block 60 and the positioning hole 74 are correctly inserted after grabbing the accessory 6 to smoothly grab the accessory, that is, the embodiment of the calibration tool for spindle positioning of the large gantry machining center.

[0031] When using the calibration tool, first, ensure that the accessory 6 on the spindle box 7 has been returned to the accessory library, the machine tool equipment enters the manual mode, and the spindle box 7 is opened to a relatively wide position of the workbench 10 and rises along the Z-axis direction or the cross beam 6 to a distance to expose the bottom of the spindle box 7, as shown in Figure 3 At this time, the maintenance operator at the operating table of the large gantry machining center must adjust the machine spindle rotation measurement feedback mode to half-closed loop, unlock the spindle motor 72 brake, and start to perform the initial zero reset related operation. Note that the equipment must be checked again to ensure that it is in complete manual operation mode for safety considerations, and more than two people must be present to monitor the operation throughout the process. After completing the above numerical control system operation, the maintenance personnel hold the calibration tool as shown in Figure 6 The gear end of the mandrel 1 is inserted into the spindle box and tightly meshes with the inner ring gear of the spindle 71. At this time, the gear end surface of the mandrel 1 should not touch the bottom end of the inner ring gear of the spindle 71, the positioning block 3 position is not aligned with any positioning hole 74 on the spindle box, and the operator can hold the auxiliary plate 2 for rotation operation. Then, the operator should hold the auxiliary plate 2 to rotate the calibration tool to drive the spindle 71 to rotate until the two positioning blocks 3 can be aligned with any diagonally distributed positioning hole 74 for insertion operation. As shown in Figure 8As shown, the maintenance personnel will keep the calibration tool locked after inserting it into the spindle box 70, and then another maintenance personnel will calibrate the position of the spindle 71 to zero on the numerical control interface of the operation platform, and start the brake of the spindle motor 72. Then take away the calibration tool, switch the operation mode of the equipment back to the automatic mode, and then execute the automatic accessory grabbing mode to verify the positioning effect. If the equipment executes the automatic accessory grabbing smoothly, especially the accessory clamping jaw 75 can smoothly pull up the accessory pull pin 61 until there is no gap between the spindle box 7 and the accessory 6, the spindle positioning calibration is successful this time.

[0032] Although the above-described methods are illustrated and described as a series of acts for the sake of simplicity, it should be understood and appreciated that the methods are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur simultaneously or in different order than shown and described herein or can occur with other acts not presented and described herein but which would be understood by one skilled in the art.

[0033] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A calibration tool for positioning a main spindle of a large gantry machining center, characterized by: The utility model discloses a core shaft (1), auxiliary plate (2), locating block (3), core shaft link bolt (4) and locating block fastening bolt (5) are composed, the core shaft (1) center is designed as through -hole to reduce the overall weight, and the thick gear that can be welded with the internal gear of main shaft (71) is engaged in one end, and the wide slot for the installation of auxiliary plate (2) is processed in one end, and the overall length is designed to refer to the distance from the upper end surface of accessory drive gear (62) to the contact surface of accessory (6) and main shaft box (7), auxiliary plate (2) will be installed to the slotted end of core shaft (1) through fastening bolt, and the central axis of the most middle through -hole will keep coaxial with the axis of core shaft (1), and locating block (3) will be installed to the both ends of auxiliary plate (2).

2. A calibration tool for spindle positioning of a large gantry machining center according to claim 1, characterized in that: The auxiliary plate (2) is a long strip steel piece, and eleven holes with same diameter are drilled on the auxiliary plate (2), and the holes at both ends are not tapped and are used for installing the locating block (3), and the axial distance of the two holes is equal to the axial distance of the accessory locating block (60) diagonally distributed on the accessory (6), the eight holes on the auxiliary plate (2) are distributed according to the center line, and the eight holes are mainly used for reducing the weight, the middle part of the auxiliary plate (2) has a threaded hole for installing the core shaft (1), and one side of the auxiliary plate (2) for installing the locating block (3) is a mounting surface.

3. A calibration tool for spindle positioning of a large gantry machining center according to claim 1, characterized in that: The overall shape of the locating block (3) is consistent with the accessory locating block (60), and the locating block (3) is used as the calibration block of the tool and the accessory end surface positioning hole (74).

4. The calibration tool for spindle positioning of a large gantry machining center of claim 1, wherein: The thickness of the gear at the gear end of the core shaft (1) should be less than the thickness of the gear of the internal gear ring of the main shaft (71).

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