Jig for quickly calibrating center of cutter location hole of precision automatic lathe

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a tool for quickly calibrating the center of a cutter location hole of a precision automatic lathe, which comprises a fixed sleeve, a hand wheel, a rotating shaft and a mounting head, the fixed sleeve is sleeved outside the rotating shaft, the rotating shaft is rotatably connected with the inner wall of the fixed sleeve, and the hand wheel is arranged at one end of the rotating shaft and positioned outside one end of the fixed sleeve. And the mounting head is arranged at the other end of the rotating shaft, is positioned outside the other end of the fixed sleeve and is used for mounting a dial indicator. The tool position hole center correcting device is simple in structure, convenient to operate and capable of correcting the tool position hole center rapidly and accurately, and due to the fact that the tool position hole center correcting device is installed in a tool position hole of a tool apron for use, a chuck on a main shaft does not need to be replaced when the tool position hole center is corrected.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a jig for quickly calibrating the center of a tool position hole of a sliding headstock lathe. Background Art

[0002] In the process of machining mechanical parts, it is necessary to calibrate the machining center machine tool equipment and the fixture before machining, and the machining process also requires repeated calibration, which not only requires straightening and leveling, but also often requires centering and finding the reference edge, etc.

[0003] The traditional method of calibrating the center is to clamp a dial indicator with a chuck on the spindle, then let the pointer of the dial indicator contact the conical surface of the tool shank, and then rotate the spindle to calibrate the center of the tool position hole. Before calibrating the center of the tool position hole, it is necessary to replace the chuck on the spindle with a chuck adapted to the dial indicator to clamp the dial indicator. After calibration, when it is necessary to machine the workpiece, it is necessary to replace the chuck on the spindle with a chuck adapted to the workpiece to clamp the workpiece, so that it is necessary to replace the chuck on the spindle back and forth, which is troublesome to operate and wastes time. For example: The Chinese patent document with the application number 202023050337.3 discloses a calibration device for a numerical control machining center, including a calibration table rod and a tool setting block. The calibration table rod includes a fixed table rod, a hinge clamping plate, a movable table rod and a lever calibration table. The upper end of the fixed table rod is fixedly connected to the machine tool spindle, the lower end of the fixed table rod is hinged to the upper end of the hinge clamping plate, the lower end of the hinge clamping plate is hinged to the upper end of the movable table rod, and the hinge clamping plate is provided with a locking structure for limiting the two hinged positions. The lower end of the movable table rod is fixedly connected to the upper end of the lever calibration table. The upper end of the fixed table rod of this patent document is installed on the chuck of the machine tool spindle. After calibration, it is necessary to replace the chuck on the machine tool spindle with a chuck adapted to the workpiece to clamp the workpiece. Therefore, the defect is very obvious, and a solution is urgently needed. Summary of the Utility Model

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a jig for quickly calibrating the center of a tool position hole of a sliding headstock lathe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A jig for quickly calibrating the center of a tool position hole of a sliding headstock lathe, which includes a fixed sleeve, a handwheel, a rotating shaft and a mounting head. The fixed sleeve is sleeved outside the rotating shaft, the rotating shaft is rotationally connected to the inner wall of the fixed sleeve, the handwheel is installed at one end of the rotating shaft and outside one end of the fixed sleeve, and the mounting head is installed at the other end of the rotating shaft and outside the other end of the fixed sleeve. The mounting head is used for installing a dial indicator.

[0007] Further, a stud is coaxially arranged at one end of the rotating shaft away from the handwheel, and the mounting head is threadedly connected to the stud.

[0008] Furthermore, a dovetail groove is provided on one end face of the mounting head away from the rotating axis, a threaded hole is provided on the bottom wall of the dovetail groove, the threaded hole is threadedly connected to the stud, the dovetail block of the micrometer is slidably installed in the dovetail groove, and the end face of the stud can lock the dovetail block of the micrometer in the dovetail groove.

[0009] Furthermore, the hand wheel is locked on the rotating shaft via a locking piece.

[0010] Furthermore, the locking piece is a screw, a screw hole is provided in the radial direction of the handwheel, a sleeve hole is provided in the axial direction of the handwheel, the screw hole is connected to the sleeve hole, one end of the rotating shaft is inserted into the sleeve hole, the screw is screwed to the screw hole, and the end face of the screw is used to contact the outer side surface of the rotating shaft.

[0011] Furthermore, the outer side wall of the fixing sleeve is provided with a positioning cut surface.

[0012] Furthermore, the outer side wall of the hand wheel is provided with friction lines.

[0013] The beneficial effects of the present invention are as follows: in actual application, a tool is installed in a tool hole on a tool holder of a Swiss machine, and first an inverted cone is machined on a workpiece on the spindle of the Swiss machine by the tool on the tool holder of the Swiss machine, and then a fixed sleeve is installed in the tool hole on the tool holder of the Swiss machine, and a micrometer is installed on a mounting head, and the needle of the micrometer contacts the inverted cone on the workpiece, and then an operator rotates a hand wheel, and the rotating hand wheel drives the rotating shaft, the mounting head and the micrometer to rotate synchronously, and the operator observes the reading of the micrometer while rotating the hand wheel, and determines whether the center of the tool hole of the tool holder has deviation and the size of the deviation value through the reading of the micrometer. If the center of the tool hole of the tool holder has deviation, the coordinate compensation of the machining center can be used to calibrate the center of the tool hole of the tool holder. The present invention has a simple structure and is easy to operate, and can quickly and accurately calibrate the center of the tool hole. Moreover, since the present invention is installed in the tool hole of the tool holder for use, there is no need to replace the chuck on the spindle when calibrating the center of the tool hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective.

[0016] Figure 3 It is a cross-sectional view of the present utility model.

[0017] Description of reference numerals:

[0018] 1. Fixed sleeve; 2. Handwheel; 3. Rotating axis; 4. Mounting head; 5. Stud; 6. Dovetail groove; 7. Threaded hole; 8. Locking piece; 9. Screw hole; 10. Socket hole; 11. Positioning section; 12. Friction lines. DETAILED DESCRIPTION

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0020] like Figures 1 to 3 As shown, the utility model provides a jig for quickly calibrating the center of the tool hole of a Swiss-type lathe, which includes a fixed sleeve 1, a handwheel 2, a rotating shaft 3 and a mounting head 4. The fixed sleeve 1 is sleeved on the outside of the rotating shaft 3, and the rotating shaft 3 is rotatably connected to the inner wall of the fixed sleeve 1. The handwheel 2 is installed at one end of the rotating shaft 3 and is located outside one end of the fixed sleeve 1. The mounting head 4 is installed at the other end of the rotating shaft 3 and is located outside the other end of the fixed sleeve 1. The mounting head 4 is used to install a micrometer; specifically, the rotating shaft 3 adopts a precision rotating shaft 3.

[0021] In actual application, the tool is installed in the tool hole on the tool holder of the Swiss machine. First, an inverted cone is machined on the workpiece on the spindle of the Swiss machine by the tool on the tool holder of the Swiss machine. Then the fixed sleeve 1 is installed in the tool hole on the tool holder of the Swiss machine. The micrometer is installed on the mounting head 4. The needle of the micrometer contacts the inverted cone on the workpiece. Then the operator rotates the hand wheel 2. The rotating hand wheel 2 drives the rotating shaft 3 to rotate synchronously with the mounting head 4 and the micrometer. The operator observes the reading of the micrometer while rotating the hand wheel 2. The reading of the micrometer is used to determine whether the center of the tool hole of the tool holder has deviation and the size of the deviation value. If the center of the tool hole of the tool holder has deviation, the coordinate compensation of the machining center can be used to calibrate the center of the tool hole of the tool holder. The utility model has a simple structure and is easy to operate. It can quickly and accurately calibrate the center of the tool hole. Since the utility model is installed in the tool hole of the tool holder, there is no need to replace the chuck on the spindle when calibrating the center of the tool hole.

[0022] In this embodiment, a stud 5 is coaxially provided at one end of the rotating shaft 3 away from the hand wheel 2, and the mounting head 4 is threadedly connected to the stud 5. This structural design facilitates the assembly and disassembly of the mounting head 4 and the rotating shaft 3, and the connection between the two is firm.

[0023] In this embodiment, a dovetail groove 6 is provided on one end face of the mounting head 4 away from the rotating shaft 3. A threaded hole 7 is provided on the bottom wall of the dovetail groove 6. The threaded hole 7 is threadedly connected to the stud 5. The dovetail block of the dial indicator is slidably installed in the dovetail groove 6. The end face of the stud 5 can lock the dovetail block of the dial indicator in the dovetail groove 6. During assembly, the dovetail block of the dial indicator is first slidably installed in the dovetail groove 6. Then, the mounting head 4 is screwed so that the threaded hole 7 of the mounting head 4 is screwed into the stud 5 until the end face of the stud 5 contacts the dovetail block, thereby locking the dovetail block of the dial indicator in the dovetail groove 6. This completes the assembly of the dial indicator, the mounting head 4, and the rotating shaft 3.

[0024] In this embodiment, the hand wheel 2 is locked on the rotating shaft 3 via a locking piece 8. This structural design facilitates the assembly of the hand wheel 2 and the rotating shaft 3.

[0025] In this embodiment, the locking member 8 is a screw. A threaded hole 9 is provided radially in the handwheel 2, and a sleeve hole 10 is provided axially in the handwheel 2. The threaded hole 9 communicates with the sleeve hole 10. One end of the rotating shaft 3 is inserted into the sleeve hole 10. The screw is threadedly engaged with the threaded hole 9, with the end face of the screw contacting the outer side of the rotating shaft 3. Specifically, the screw is a machine screw. In actual use, the handwheel 2 is locked to the rotating shaft 3 by the end face of the screw contacting the rotating shaft 3.

[0026] In this embodiment, the outer wall of the fixed sleeve 1 is provided with a positioning cut surface 11. After the fixed sleeve 1 is installed in the tool hole of the tool holder of the Swiss machine tool, the locking bolt on the tool holder is tightened so that the locking bolt contacts the positioning cut surface 11, thereby locking the fixed sleeve 1 in the tool hole of the tool holder.

[0027] In this embodiment, the outer wall of the hand wheel 2 is provided with friction lines 12. The provision of the friction lines 12 increases the friction between the hand and the hand wheel 2.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A fixture for quickly calibrating the center of the tool position hole of a sliding headstock lathe, characterized in that: The utility model comprises a fixed sleeve (1), a hand wheel (2), a rotating shaft (3) and a mounting head (4); the fixed sleeve (1) is sleeved outside the rotating shaft (3); the rotating shaft (3) is rotatably connected to the inner wall of the fixed sleeve (1); the hand wheel (2) is mounted on one end of the rotating shaft (3) and is located outside one end of the fixed sleeve (1); the mounting head (4) is mounted on the other end of the rotating shaft (3) and is located outside the other end of the fixed sleeve (1); and the mounting head (4) is used for mounting a micrometer.

2. The fixture for quickly calibrating the center of the tool bit hole according to claim 1, wherein: A stud (5) is coaxially arranged at one end of the rotating shaft (3) away from the hand wheel (2), and the mounting head (4) is threadedly connected to the stud (5).

3. A fixture for quickly calibrating the center of a tool bit hole of a sliding headstock lathe according to claim 2, characterized in that: A dovetail groove (6) is provided on one end face of the mounting head (4) away from the rotating shaft (3); a threaded hole (7) is provided on the bottom wall of the dovetail groove (6); the threaded hole (7) is threadedly connected to the stud (5); the dovetail block of the micrometer is slidably mounted in the dovetail groove (6); and the end face of the stud (5) can lock the dovetail block of the micrometer in the dovetail groove (6).

4. A fixture for quickly calibrating the center of the tool bit hole of a sliding headstock lathe according to claim 1, characterized in that: The hand wheel (2) is locked on the rotating shaft (3) via a locking piece (8).

5. A fixture for quickly calibrating the center of the tool bit hole of a sliding headstock lathe according to claim 4, characterized in that: The locking member (8) is a screw. A screw hole (9) is provided in the radial direction of the hand wheel (2). A sleeve hole (10) is provided in the axial direction of the hand wheel (2). The screw hole (9) is communicated with the sleeve hole (10). One end of the rotating shaft (3) is inserted into the sleeve hole (10). The screw is screwed to the screw hole (9). The end face of the screw is used to abut against the outer side face of the rotating shaft (3).

6. A fixture for quickly calibrating the center of a tool position hole according to claim 1, characterized in that: The outer side wall of the fixed sleeve (1) is provided with a positioning cut surface (11).

7. A fixture for quickly calibrating the center of a tool position hole according to claim 1, characterized in that: The outer side wall of the hand wheel (2) is provided with friction lines (12).

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