Workpiece center positioning mechanism of gear milling machine

Abstract

The utility model discloses a workpiece center positioning mechanism of a gear milling machine, which relates to the technical field of positioning processing and comprises a machine tool, a workbench and a positioning assembly, the machine tool is arranged on the machining side of the workbench. The positioning assembly comprises a fastening piece and a positioning piece, the center point of the positioning piece located on the machine tool and the center point of the positioning piece located on the workbench form a positioning straight line, the positioning straight line penetrates through the center of the workbench, and the fastening piece and the positioning piece are detachably connected. The fasteners are used for fastening the positioning pieces located on the machine tool and the workbench respectively. The positioning device has the advantages that the mechanical structure is simplified, rapid and accurate positioning is achieved, and the positioning precision and operation convenience are improved.

Description

Technical Field

[0001] The present application relates to the field of positioning processing technology, and in particular to a workpiece center positioning mechanism for a gear milling machine. Background Art

[0002] A gear milling machine is a gear processing machine widely used in the machinery manufacturing industry, primarily for machining the tooth surfaces of gears or racks. It can process spur and helical cylindrical gears, as well as worm gears, sprockets, and other types of gears. The operating principle of a gear milling machine is to achieve the desired surface finish by machining the workpiece's tooth surfaces using the rotation of a milling cutter or cutter head combined with the feed motion of a worktable or milling head.

[0003] Existing positioning mechanisms mostly use complex mechanical structures and tedious adjustment processes. Although they can achieve certain positioning functions, they are inconvenient to operate and will affect the positioning accuracy due to mechanical wear after long-term use. Utility Model Content

[0004] In order to improve the problems of low machining positioning accuracy and complicated operation on a gear milling machine, the present application provides a workpiece center positioning mechanism for a gear milling machine.

[0005] The present application provides a gear milling machine workpiece center positioning mechanism that adopts the following technical solutions:

[0006] A gear milling machine workpiece center positioning mechanism comprises a machine tool, a worktable and a positioning assembly; the machine tool is arranged on the processing side of the worktable; the positioning assembly comprises a fastener and a positioning member, the center point of the positioning member on the machine tool and the center point of the positioning member on the worktable form a positioning straight line, and the positioning straight line passes through the center of the worktable. The fastener and the positioning member are detachably connected, and the fastener is used to fasten the positioning members on the machine tool and on the worktable respectively.

[0007] By adopting the above technical solution, the positioning parts are respectively arranged on the workbench and the machine tool, and the fasteners play a tightening role on the positioning parts. The positioning point on the machine tool and the center on the workbench form a straight line, and the extension line of this straight line just passes through the center of the workbench. At this time, the projection line of the milling cutter axis passes through the center point of the positioning part on the machine tool, reducing the tediousness of subsequent position adjustment; when the extension line of the straight line does not pass through the center of the workbench, the position of the machine tool is adjusted to ensure that the milling cutter axis is in the center of the processing workbench when the machine tool is installed, thereby improving the positioning accuracy of the processing.

[0008] Optionally, the positioning member includes a column and a base, the column is installed on the machine tool, and the base is installed on the workbench, parallel to the end surface of the workbench, and the center line of the base and the center line of the column are collinear.

[0009] By adopting the above technical solution, the base and the worktable are installed in a detachable manner, and the column and the machine tool are also installed in a detachable manner. The center line of the column and the center line of the base are located on the same straight line and pass through the center of the worktable, ensuring that the milling cutter spindle on the machine tool is located at the center of the worktable during milling.

[0010] Optionally, a through hole is provided on the base, a plurality of positioning holes are provided on the workbench, the through holes and adjacent positioning holes are equidistant from each other, a mounting hole is provided on the machine tool, and an assembly hole equidistant from the adjacent mounting holes is provided on the column, and the plurality of positioning holes pass through the center of the workbench and are collinear with the adjacent mounting holes on the machine tool.

[0011] By adopting the above technical solution, three positioning holes are opened on the workbench, and the through hole of the base is opened at its bottom. Fasteners are installed in the corresponding aligned holes, which facilitates workers to quickly and accurately position and simplifies the operation process.

[0012] Optionally, the fastener includes a first pin and a second pin, the first pin is fastened through the through hole and the positioning hole, and the second pin is fastened through the assembly hole and the installation hole.

[0013] By adopting the above technical solution, the first pin is used to fasten the base and the worktable, and the center line of the base passes through the midpoint of the worktable. The second pin is used to fasten the machine tool and the column, and the center line of the column passes through the center of the worktable. The center line of the column and the center line of the base are collinear, thereby ensuring that the milling cutter shaft on the machine tool is located at the center position of the worktable.

[0014] Optionally, a reserved hole coaxial with the through hole is opened on the base.

[0015] By adopting the above technical solution, when the milling cutter shaft on the machine tool moves to the same axis as the reserved hole, the milling cutter shaft drops to the height of the reserved hole, making it easy to judge whether the milling cutter shaft is located at the center of the workbench.

[0016] Optionally, the spacing between the assembly holes on the columns is equal to the spacing between the reserved holes on the base.

[0017] By adopting the above technical solution, when the column on the machine tool moves to the middle part of the base, it is determined whether the installation position of the machine tool is offset by the spacing of the reserved holes and the spacing of the assembly holes.

[0018] Optionally, a scale is further installed on one side of the column, and the scale is rotatably matched with the column.

[0019] By adopting the above technical solution, the scale is turned over to observe the height difference between the column and the base, and it is convenient to observe from the scale whether the column is located on the same straight line as the axis of the machine tool milling cutter.

[0020] Optionally, a positioning post is further installed on one side of the rotating part of the scale, and the positioning post passes through the scale and is plugged into the column.

[0021] By adopting the above technical solution, when the ruler is in use, the ruler is flipped to be perpendicular to the column; when the ruler is not in use, the ruler and the column are kept horizontal, and the positioning column is used to fix the ruler.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The center lines of the positioning parts on the machine tool and the workbench pass through the center of the workbench, ensuring that the milling cutter axis of the machine tool and the center line are collinear, simplifying the mechanical structure, avoiding the tedious adjustment and positioning during subsequent workpiece processing, and achieving fast and accurate positioning;

[0024] 2. The operator can quickly locate the parts through the positioning parts and fasteners, which makes it easier for the staff to observe the installation position and improve the positioning accuracy. At the same time, the fasteners and positioning parts are detachably connected, which improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram showing the overall structure of this application.

[0027] Figure 2 This is a structural diagram showing the positioning component of this application.

[0028] Figure 3 It is a structural diagram of the display base of this application.

[0029] Figure 4 It is a structural diagram of the column displayed in this application.

[0030] Figure 5 This is a partial structural diagram showing the fasteners and positioning parts of this application.

[0031] Figure 6 This is a schematic diagram showing the structure of the scale installed on the column in this application.

[0032] Figure numerals: 1. Machine tool; 2. Workbench; 3. Positioning assembly; 31. Fastener; 32. Positioning piece; 321. Column; 322. Base; 4. Through hole; 5. Positioning hole; 6. Mounting hole; 7. Assembly hole; 311. First pin; 312. Second pin; 8. Positioning column; 9. Scale. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 To the attached Figure 6 This application is described in further detail.

[0034] The embodiment of the present application discloses a workpiece center positioning mechanism for a gear milling machine.

[0035] Reference Figure 1 A gear milling machine workpiece center positioning mechanism includes a machine tool 1, a workbench 2 and a positioning assembly 3; the machine tool 1 is arranged on the processing side of the workbench 2; the positioning assembly 3 includes a fastener 31 and a positioning member 32, the center point of the positioning member 32 on the machine tool 1 and the center point of the positioning member 32 on the workbench 2 constitute a positioning straight line, and the positioning straight line passes through the center of the workbench 2. The fastener 31 and the positioning member 32 are detachably connected, and the fastener 31 is used to fasten the positioning members 32 on the machine tool 1 and on the workbench 2 respectively.

[0036] See also Figure 3 and Figure 4 As shown, the positioning member 32 consists of a column 321 and a base 322. The column 321 is installed on the machine tool 1, and the base 322 is installed on the workbench 2. The center line of the base 322 and the center line of the column 321 are collinear and parallel to the end face of the workbench 2. The center line of the column 321 and the center line of the base 322 are located on the same straight line, and when passing through the center of the workbench 2, it ensures that the milling cutter spindle on the machine tool 1 is located at the center of the workbench 2 during milling. The column 321 and the base 322 are respectively installed on the machine tool 1 and the workbench 2 by a convenient loading and unloading method.

[0037] See also Figure 2 As shown, the fastener 31 consists of a first pin 311 and a second pin 312. The first pin 311 is fastened through the through hole 4 and the positioning hole 5, and the second pin 312 is fastened through the assembly hole 7 and the mounting hole 6. The base 322 and the workbench 2 are fastened by the first pin 311, and the machine tool 1 and the column 321 are fastened by the second pin 312. After installation, the center line of the column 321 and the center line of the base 322 are collinear, ensuring that the axis of the milling cutter of the machine tool 1 is located at the center position of the processing workbench 2.

[0038] See also Figure 3 、 Figure 4 and Figure 5As shown, two through holes 4 are provided on the base 322, and a plurality of positioning holes 5 are provided on the workbench 2. The plurality of positioning holes 5 are pre-positioned and drilled by the machine tool 1 during fine processing, so as to facilitate the subsequent positioning of the milling cutter axis on the machine tool 1 to find the center of the circle. The through holes 4 and the adjacent positioning holes 5 are equidistant from each other, and the machine tool 1 is provided with mounting holes 6. The column 321 is provided with assembly holes 7 equidistant from the adjacent mounting holes 6. The plurality of positioning holes 5 pass through the center of the workbench 2 and are collinear with the adjacent mounting holes 6 on the machine tool 1. In this embodiment, three positioning holes 5 are provided, which are provided on both sides of the workbench 2, and the positioning holes 5 on each side pass through the center of the workbench 2, so as to facilitate the positioning and installation of the positioning holes 5 on either side of the machine tool 1 and the workbench 2.

[0039] See also Figure 3 As shown, the base 322 is provided with a reserved hole coaxial with the through hole 4, and there are three reserved holes. When the milling cutter shaft on the machine tool 1 moves to be coaxial with the reserved hole, the milling cutter shaft drops to the height of the reserved hole position, which is convenient for judging whether the milling cutter shaft is located at the center position of the workbench 2.

[0040] See also Figure 4 As shown, the spacing between the assembly holes 7 on the column 321 is equal to the spacing between the reserved holes on the base 322. When the column 321 on the machine tool 1 moves to the middle part of the base 322, the spacing between the reserved holes and the spacing between the assembly holes 7 are used to determine whether the installation position of the machine tool 1 is offset.

[0041] See also Figure 6 As shown, a scale 9 is also installed on one side of the column 321. The scale 9 and the column 321 are rotatably matched. The rotating part of the scale 9 is fastened by bolts. When using the scale 9, loosen the bolts on the scale 9 and manually rotate the scale 9; when measuring the height, the scale 9 is locked on the column 321 by the bolts; a positioning column 8 is also installed on one side of the rotating part of the scale 9. The positioning column 8 passes through the scale 9 and the column 321 and is plugged into and matched. The positioning column 8 further limits the rotated scale 9, thereby improving the stability of the scale 9 during measurement or placement, ensuring the accuracy of the data during measurement, and reducing detection errors.

[0042] The implementation principle of the workpiece center positioning mechanism of a gear milling machine in the embodiment of the present application is as follows: after the through-hole on the base 322 and the positioning hole 5 on the workbench 2 are aligned, the base 322 and the workbench 2 are fastened by the first pin 311, the assembly hole 7 on the column 321 and the mounting hole 6 on the machine tool 1 correspond one to one, and the second pin 312 fastens the column 321 and the machine tool 1. The operator adjusts the position of the machine tool 1 by whether the center line of the column 321 and the center line of the base 322 are collinear. When the two are collinear, the machine tool 1 is moved to the top of the base 322 and the milling cutter on the machine tool 1 is observed to see whether it passes through the reserved hole on the base 322 when it descends, so as to judge whether the milling cutter axis of the machine tool 1 is installed in the center position of the workbench 2. The distance between the end faces of the column 321 and the base 322 of the scale 9 is used to further verify whether the milling cutter axis passes through the center of the workbench 2, thereby ensuring accurate positioning. The convenient installation or removal of the positioning member 32 simplifies the tedious adjustment of the positioning process and makes positioning more convenient for the operator.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gear milling machine workpiece center positioning mechanism, characterized by: It comprises a machine tool (1), a workbench (2) and a positioning assembly (3); The machine tool (1) is arranged on a processing side of the workbench (2); The positioning assembly (3) comprises a fastener (31) and a positioning member (32); the center point of the positioning member (32) on the machine tool (1) and the center point of the positioning member (32) on the workbench (2) form a positioning straight line, and the positioning straight line passes through the center of the workbench (2); the fastener (31) and the positioning member (32) are detachably connected, and the fastener (31) is used to fasten the positioning members (32) on the machine tool (1) and on the workbench (2), respectively.

2. A gear milling machine workpiece center positioning mechanism according to claim 1, characterized in that: The positioning member (32) comprises a column (321) and a base (322), wherein the column (321) is mounted on the machine tool (1), and the base (322) is mounted on the workbench (2), and the center line of the base (322) and the center line of the column (321) are collinear and parallel to the end surface of the workbench (2).

3. A gear milling machine workpiece center positioning mechanism according to claim 2, characterized in that: The base (322) is provided with a through hole (4), the workbench (2) is provided with a plurality of positioning holes (5), the through hole (4) and adjacent positioning holes (5) are spaced at equal intervals, the machine tool (1) is provided with a mounting hole (6), the column (321) is provided with an assembly hole (7) equidistant from the adjacent mounting holes (6), and the plurality of positioning holes (5) pass through the center of the workbench (2) and are collinear with the adjacent mounting holes (6) on the machine tool (1).

4. A gear milling machine workpiece center positioning mechanism according to claim 3, characterized in that: The fastener (31) comprises a first pin (311) and a second pin (312), wherein the first pin (311) is fastened through the through hole (4) and the positioning hole (5), and the second pin (312) is fastened through the assembly hole (7) and the mounting hole (6).

5. The gear milling machine workpiece center positioning mechanism according to claim 2, characterized in that: The base (322) is provided with a reserved hole coaxial with the through hole (4).

6. A gear milling machine workpiece center positioning mechanism according to claim 5, characterized in that: The spacing between the assembly holes (7) on the upright column (321) is equal to the spacing between the reserved holes on the base (322).

7. The gear milling machine workpiece center positioning mechanism according to claim 2, characterized in that: A scale (9) is also installed on one side of the column (321), and the scale (9) and the column (321) are rotatably matched.

8. The gear milling machine workpiece center positioning mechanism according to claim 7, characterized in that: A positioning column (8) is also installed on one side of the rotating part of the scale (9), and the positioning column (8) passes through the scale (9) and is plugged into the column (321).

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