Machine tool clamp for shoe tree processing

Abstract

The utility model discloses a machine tool fixture for shoe tree processing, which comprises a base, the top of the base is provided with a tool support used for clamping a semi-finished shoe tree and a linear laser, the top of the semi-finished shoe tree is provided with a connecting convex part in advance, and the top and the toe cap part of the semi-finished shoe tree are respectively provided with a positioning marking part in advance. The linear laser is fixedly arranged, the linear laser projects a tool positioning auxiliary light beam in a fixed direction towards the semi-finished shoe tree, the tool positioning auxiliary light beam projects on the surface of the semi-finished shoe tree to form a positioning reference light spot, and when the semi-finished shoe tree is assembled, a connecting convex part of the semi-finished shoe tree is connected to the tool support. The positioning reference light spots penetrate through the two positioning marking parts of the semi-finished shoe tree respectively to serve as tool positioning reference. And the clamping precision of the machine tool fixture can be quickly judged, so that the milling precision of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe last processing auxiliary equipment, in particular to a machine tool fixture for shoe last processing. Background Art

[0002] The shoe last is the mother of the shoe and the molding mold of the shoe. The shoe last not only determines the shape and style of the shoe, but also determines whether the shoe fits the foot and whether it can protect the foot. The shoe last is mostly milled and processed by a special shoe last machine. The processing procedure of the shoe last machine is to set up the shoe last blank in the machine, and clamp the two ends of the shoe last blank respectively, so that the two ends of the shoe last blank form an axis, and the shoe last blank can be rotated, and then the processing tool is introduced from the side, and the corresponding shoe last blank is processed by rough, fine and fine milling to complete the required shoe last shape. However, after the processing is completed, the two ends of the shoe last (i.e. the toe and the heel) remain clamped blanks, so it is necessary to manually trim the rough edges of the blanks.

[0003] When manually trimming the rough edge of the blank, the semi-finished shoe last needs to be locked and fixed on the machine tool again. The existing shoe last trimming machine tool fixture has the following problems: the clamping operation is cumbersome, repositioning is difficult, there is a lack of position reference during manual trimming, manual operation is difficult, there is a lack of reference for the trimming position, and the size error between the finished shoe lasts is large. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a machine tool fixture for shoe last processing, which is convenient for the fine processing of the toe and heel of the shoe last, has high repositioning accuracy, and improves the milling accuracy of batch production of shoe lasts.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a machine tool fixture for shoe last processing, including a base, a tooling bracket and a straight-line laser for clamping a semi-finished shoe last are provided on the top of the base, a connecting protrusion is preset on the top of the semi-finished shoe last, and a positioning mark is preset on the top and the toe of the semi-finished shoe last respectively, the straight-line laser is fixedly arranged, and the straight-line laser projects a tooling positioning auxiliary light beam of a fixed orientation toward the semi-finished shoe last, and the tooling positioning auxiliary light beam is projected on the surface of the semi-finished shoe last to form a positioning reference light spot. When the semi-finished shoe last is tooled, the connecting protrusion of the semi-finished shoe last is connected to the tooling bracket, and the positioning reference light spot passes through the two positioning mark parts of the semi-finished shoe last respectively to serve as a tooling positioning reference.

[0006] In a further technical solution, a limiting groove is provided on the surface of the connecting protrusion; a tooling connecting part is provided at the outer end of the tooling bracket, a tooling matching surface is formed on the outer side of the tooling connecting part, and a positioning protrusion is formed on the tooling matching surface. When the semi-finished shoe last is tooled, the surface of the connecting protrusion is tightly fitted with the tooling matching surface, and the positioning protrusion is just clamped in the corresponding limiting groove, and a locking bolt is connected between the connecting protrusion and the tooling connecting part.

[0007] In a further technical solution, the tooling mating surface is arranged horizontally.

[0008] In a further technical solution, an internal threaded hole is provided on the surface of the connecting protrusion; the tooling connecting part is provided with two bolt through holes extending upward and downward, and the locking bolts are inserted into the bolt through holes and threadedly connected to the corresponding internal threaded holes of the connecting protrusion.

[0009] In a further technical solution, a connecting column is formed at the inner end of the tooling bracket, and the connecting column is arranged in a cylindrical shape. A mounting mating surface is formed on one side of the connecting column, and the mounting mating surface is formed with a first positioning concave-convex surface structure; a movably arranged connecting rod is provided on the top of the base, and a second positioning concave-convex surface structure is provided on the end face of the connecting rod, and the second positioning concave-convex surface structure matches the first positioning concave-convex surface structure. When the tooling bracket is installed, the mounting mating surface is tightly attached to the end face of the connecting rod, and the first positioning concave-convex surface structure and the second positioning concave-convex surface structure are interlocked to realize the installation positioning of the tooling bracket, and the tooling bracket and the connecting rod are fixed by bolts.

[0010] In a further technical solution, a laser bracket is provided on the top of the base, the laser bracket is arranged vertically, and a straight-line laser is fixed on the top of the laser bracket.

[0011] In a further technical solution, an intermediate support plate is fixedly installed on the top of the laser bracket. The middle position of the intermediate support plate is bent, and the bending angle is greater than 120 degrees. The bending angles of intermediate support plates of different specifications are different. The bending point is used as the boundary. One side of the intermediate support plate is fixedly connected to the laser bracket, and a straight-line laser is fixed to the other side of the intermediate support plate.

[0012] In a further technical solution, the base is arranged in an upright rectangular parallelepiped, the bottom of the base is provided with an assembly base plate, the bottom surface of the assembly base plate is provided with two transversely arranged connecting plates, the two sides of the connecting plates protrude transversely from the assembly base plate respectively, and the protruding parts of the connecting plates are provided with connecting holes.

[0013] After adopting the above structure, the advantages of the utility model compared with the prior art are as follows: the utility model provides a machine tool fixture for shoe last processing, and the clamping base is provided with a straight line laser, which can project a tooling positioning auxiliary light beam at the clamping position of the semi-finished shoe last. When the semi-finished shoe last is clamped, the operator can quickly judge whether the semi-finished shoe last is clamped intact according to whether the positioning reference light spot is projected on the preset positioning mark part on the semi-finished shoe last, thereby avoiding the re-positioning measurement operation, improving the tooling efficiency, and ensuring that the semi-finished shoe lasts processed in batches can have better tooling accuracy, thereby improving the milling quality; the movably arranged connecting rod allows the operator to instantly adjust the tooling position of the semi-finished shoe last to achieve high-precision milling processing standards; the operator can select intermediate support sheets with different bending angles according to production needs to obtain tooling positioning auxiliary light beams with different projection angles, which are suitable for the clamping requirements of semi-finished shoe lasts of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the utility model from a top view angle.

[0017] Figure 3 It is a structural schematic diagram of a semi-finished shoe last in the utility model.

[0018] Figure 4 It is a structural schematic diagram of the tooling bracket in the utility model.

[0019] Figure 5 It is a structural schematic diagram of the tooling bracket in the utility model from another perspective.

[0020] Figure 6 It is a structural schematic diagram of the tooling bracket in the utility model from another perspective. DETAILED DESCRIPTION

[0021] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0022] like Figures 1 to 6As shown, a machine tool fixture for shoe last processing includes a base, the top of the base is provided with a tooling bracket 6 for clamping a semi-finished shoe last 2 and a straight-line laser, the top of the semi-finished shoe last 2 is preset with a connecting protrusion 3, the top and the toe of the semi-finished shoe last 2 are respectively preset with positioning mark parts 4, the straight-line laser is fixedly set, the straight-line laser projects a tooling positioning auxiliary light beam 5 of a fixed orientation toward the semi-finished shoe last 2, the tooling positioning auxiliary light beam 5 is projected on the surface of the semi-finished shoe last 2 to form a positioning reference light spot, when the semi-finished shoe last 2 is tooled, the connecting protrusion 3 of the semi-finished shoe last 2 is connected to the tooling bracket 6, and the positioning reference light spot passes through the two positioning mark parts 4 of the semi-finished shoe last 2 respectively for tooling positioning reference. The present embodiment provides a machine tool fixture provided with a straight-line laser, which projects a positioning reference light spot on the surface of the semi-finished shoe last 2 through the fixed straight-line laser and the tooling positioning auxiliary light beam 5. When the operator clamps, by observing whether the positioning reference light spot is aligned with the positioning mark 4, the tooling condition of the semi-finished shoe last 2 can be quickly determined, thereby avoiding re-positioning measurement operations, improving tooling efficiency, and ensuring that the semi-finished shoe lasts 2 processed in batches can have better tooling accuracy, thereby improving their milling quality.

[0023] Specifically, the surface of the connecting protrusion 3 is provided with a limiting groove; the outer end of the tooling bracket 6 is provided with a tooling connection part 7, and the outer side of the tooling connection part 7 is formed with a tooling matching surface 9, and the tooling matching surface 9 is formed with a positioning protrusion 8. When the semi-finished shoe last 2 is tooled, the surface of the connecting protrusion 3 is tightly matched with the tooling matching surface 9, and the positioning protrusion 8 is just clamped in the corresponding limiting groove, and a locking bolt 13 is connected between the connecting protrusion 3 and the tooling connection part 7. The tooling matching surface 9 serves as an assembly reference surface for the quick tooling of the semi-finished shoe last 2, so that the surface of the tooling connection part 7 of the semi-finished shoe last 2 is tightly attached to it, so that the tooling position of the semi-finished shoe last 2 can be guaranteed, which is particularly suitable for multiple tooling changes during batch processing.

[0024] Specifically, the tooling mating surface 9 is arranged horizontally.

[0025] Specifically, an internal threaded hole is formed on the surface of the connecting protrusion 3 ; the tooling connecting portion 7 is formed with two bolt through holes 14 extending vertically therethrough, and the locking bolts 13 are inserted into the bolt through holes 14 and threadedly connected to the corresponding internal threaded holes of the connecting protrusion 3 .

[0026] Specifically, a positioning step 11 is milled at the inner end of the tooling bracket 6, and the positioning step 11 can be used as an assembly reference, and the positioning step 11 is matched with the connecting column; the inner side of the positioning step 11 is surrounded by a connecting column, and the connecting column is arranged in a cylindrical shape, and a mounting mating surface 12 is formed on one side of the connecting column, and the mounting mating surface 12 is formed with a first positioning concave-convex surface structure; a movably arranged connecting rod is provided on the top of the base, and a second positioning concave-convex surface structure is provided on the end face of the connecting rod, and the second positioning concave-convex surface structure matches the first positioning concave-convex surface structure. When the tooling bracket 6 is installed, the mounting mating surface 12 is tightly attached to the end face of the connecting rod, and the first positioning concave-convex surface structure and the second positioning concave-convex surface structure are interlocked to realize the installation and positioning of the tooling bracket 6, and the tooling bracket 6 is fixed to the connecting rod by bolts. At this connection, the positioning step 11 and the installation matching surface 12 respectively cooperate with the connecting column to achieve its axial and radial positioning, thereby ensuring the tooling stability and tooling accuracy of the tooling bracket 6; the movably arranged connecting rod allows the operator to instantly adjust the tooling position of the semi-finished shoe last 2 to achieve high-precision milling processing standards.

[0027] Specifically, a laser bracket is provided on the top of the base, the laser bracket is vertically arranged, and a straight-line laser is fixed on the top of the laser bracket.

[0028] Specifically, an intermediate support sheet is fixedly installed on the top of the laser bracket, and the middle position of the intermediate support sheet is bent, and its bending angle is greater than 120 degrees. The bending angles of intermediate support sheets of different specifications are different. With the bending position as the boundary, one side of the intermediate support sheet is fixed to the laser bracket, and the straight-line laser is fixed to the other side of the intermediate support sheet. The operator can select intermediate support sheets with different bending angles according to production needs to obtain tooling positioning auxiliary beams 5 with different projection angles, which are suitable for the clamping requirements of semi-finished shoe lasts 2 of different specifications.

[0029] Specifically, the base is arranged in an upright rectangular parallelepiped, with an assembly base plate at the bottom of the base, and two transversely arranged connecting pieces at the bottom surface of the assembly base plate, with both sides of the connecting pieces protruding transversely from the assembly base plate, and connecting holes are provided in the protruding parts of the connecting pieces.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A machine tool fixture for shoe last processing, comprising a base, characterized in that: A tooling bracket (6) and a straight-line laser are provided on the top of the base for clamping the semi-finished shoe last (2). A connecting protrusion (3) is preset on the top of the semi-finished shoe last (2). Positioning marking portions (4) are preset on the top and the toe of the semi-finished shoe last (2). The straight-line laser is fixedly arranged and projects a tooling positioning auxiliary light beam (5) of a fixed orientation toward the semi-finished shoe last (2). The tooling positioning auxiliary light beam (5) is projected onto the surface of the semi-finished shoe last (2) to form a positioning reference light spot. When the semi-finished shoe last (2) is tooled, the connecting protrusion (3) of the semi-finished shoe last (2) is connected to the tooling bracket (6), and the positioning reference light spot passes through two positioning mark parts (4) of the semi-finished shoe last (2) respectively to serve as a tooling positioning reference.

2. The machine tool fixture for shoe last processing according to claim 1, characterized in that: The surface of the connecting protrusion (3) is provided with a limiting groove; the outer end of the tooling bracket (6) is provided with a tooling connecting part (7), the outer side of the tooling connecting part (7) is formed with a tooling matching surface (9), and the tooling matching surface (9) is formed with a positioning protrusion (8); when the semi-finished shoe last (2) is tooled, the surface of the connecting protrusion (3) is tightly matched with the tooling matching surface (9), and the positioning protrusion (8) is just clamped in the corresponding limiting groove, and a locking bolt (13) is connected between the connecting protrusion (3) and the tooling connecting part (7).

3. The machine tool fixture for shoe last processing according to claim 2, characterized in that: The tooling matching surface (9) is arranged horizontally.

4. The machine tool fixture for shoe last processing according to claim 3, characterized in that: The surface of the connecting protrusion (3) is provided with an internal threaded hole; the tooling connecting portion (7) is provided with two bolt through holes (14) penetrating upward and downward; the locking bolt (13) is inserted into the bolt through holes (14) and threadedly connected to the corresponding internal threaded hole of the connecting protrusion (3).

5. The machine tool fixture for shoe last processing according to claim 4, characterized in that: The inner end of the tooling bracket (6) is formed with a connecting column, the connecting column is arranged in a cylindrical shape, and a mounting mating surface (12) is formed on one side of the connecting column, and the mounting mating surface (12) is formed with a first positioning concave-convex surface structure; the top of the base is provided with a movably arranged connecting rod, and the end surface of the connecting rod is provided with a second positioning concave-convex surface structure, and the second positioning concave-convex surface structure matches the first positioning concave-convex surface structure. When the tooling bracket (6) is installed, the mounting mating surface (12) is tightly attached to the end surface of the connecting rod, and the first positioning concave-convex surface structure and the second positioning concave-convex surface structure are interlocked to achieve the installation and positioning of the tooling bracket (6), and the tooling bracket (6) and the connecting rod are fixed by bolts.

6. The machine tool fixture for shoe last processing according to claim 1, characterized in that: A laser bracket is arranged on the top of the base, the laser bracket is arranged vertically, and the straight line laser is fixed on the top of the laser bracket.

7. The machine tool fixture for shoe last processing according to claim 6, characterized in that: An intermediate support plate is fixedly installed on the top of the laser bracket. The middle position of the intermediate support plate is bent, and the bending angle is greater than 120 degrees. The bending angles of intermediate support plates of different specifications are different. The bending position is used as the boundary. One side of the intermediate support plate is fixedly connected to the laser bracket, and the straight-line laser is fixed to the other side of the intermediate support plate.

8. The machine tool fixture for shoe last processing according to claim 1, characterized in that: The base is arranged in an upright rectangular parallelepiped, with an assembly base plate at the bottom of the base, and two transversely arranged connecting pieces at the bottom surface of the assembly base plate, with both sides of the connecting pieces protruding transversely from the assembly base plate, and connecting holes are provided in the protruding parts of the connecting pieces.

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