Center hole punching tool

Abstract

The utility model discloses a tool for punching a center hole. The tool comprises a base; the shaft positioning piece is arranged on the base, and a positioning section which vertically extends upwards is formed on the shaft positioning piece; the positioning sleeve is arranged on the outer side of the shaft positioning piece in a sleeving mode, the positioning sleeve is located below the positioning section, and the outer diameter of the positioning sleeve is gradually increased from top to bottom. According to the shaft positioning device, the convenience of workpiece positioning is effectively improved, the checking procedure after workpiece positioning is omitted, the perpendicularity of workpiece positioning is guaranteed, and the machining efficiency is improved. And the concentricity of the two center holes of the workpiece can be guaranteed, so that the overall machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a tool, in particular to a tool for punching a center hole. Background Art

[0002] In the production process of the core injection mold, if two center holes need to be drilled in the core injection mold, the two ends of the core injection mold need to be fixed separately before processing. In order to ensure the concentricity of the two center holes, the core injection mold needs to be clamped and proofread to ensure the concentricity of the core injection mold after positioning. This takes a long time and results in low efficiency in processing the center holes of the core injection mold. Therefore, there is an urgent need for a tooling that can improve the efficiency of processing the center holes of the core injection mold. Utility Model Content

[0003] The utility model aims to provide a center hole drilling tool to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A center hole drilling tool comprises: a base; an axis positioning piece, which is arranged on the base and has a positioning section extending vertically upward; a positioning sleeve, which is sleeved on the outside of the axis positioning piece and is located below the positioning section, and the outer diameter of the positioning sleeve gradually increases from top to bottom.

[0006] This technical solution has at least the following beneficial effects: an axis positioning member for positioning the workpiece is provided on the base; before processing, the workpiece is first inserted into the axis positioning member, and the positioning section is further inserted into the inner hole of the workpiece to achieve matching positioning of the top of the workpiece, while the bottom end of the workpiece is abutted against the outside of the positioning sleeve; the outer wall of the positioning sleeve gradually becomes larger downward to better adapt to the shape of the bottom end of the workpiece; when the workpiece is pressed downward against the outside of the positioning sleeve, the bottom end position of the workpiece is also corrected to be coaxial with the positioning sleeve, completing the upper and lower position positioning of the workpiece, thereby effectively improving the convenience of positioning the workpiece, saving the correction process after positioning the workpiece, and ensuring the verticality of the workpiece positioning, which is beneficial to ensuring the concentricity when processing the two center holes of the workpiece, thereby improving the overall processing efficiency.

[0007] As a further improvement of the above technical solution, a plurality of positioning rods are arranged around the shaft positioning member on the top side of the base. After the workpiece is inserted into the shaft positioning member and fixed, the plurality of positioning members are respectively inserted into the corresponding holes at the bottom end of the workpiece, so that the workpiece can be further positioned, effectively preventing the workpiece from rotating during processing, and improving the processing quality.

[0008] As a further improvement of the above technical solution, the shaft positioning member includes a support rod and a positioning rod, the support rod is arranged on the base, the positioning sleeve is arranged on the outside of the support rod, the positioning rod is detachably connected to the top of the support rod, and the positioning section is formed on the outside of the positioning rod. Before positioning the workpiece, positioning rods with different outer diameters can be selected and assembled on the top of the support rod according to the requirements of the inner holes of different workpieces. When in use, the positioning section formed on the outside of the positioning rod is used to match and limit the inner hole of the workpiece, so as to position the top of the workpiece, and the bottom end of the workpiece is against the positioning sleeve on the outside of the support rod. Since the outer side of the positioning sleeve itself has a conical surface, it can adapt to the positioning of the bottom end of workpieces of different diameters, so that it can be better suitable for the installation and positioning of different workpieces, and improve the versatility of the tooling.

[0009] As a further improvement of the above technical solution, a mounting hole is provided at the top end of the support rod, a mounting section is formed at the bottom end of the positioning rod, the mounting section is inserted into the mounting hole, a locking screw is passed through the outside of the support rod, and the end of the locking screw is pressed against the outside of the mounting section. When assembling the positioning rod, the mounting section at the bottom end of the positioning rod can be inserted into the mounting hole at the top end of the support rod, and the positioning rod can be quickly positioned on the support rod by using the matching connection between the mounting section and the mounting hole, and then a locking screw is passed through the outside of the support rod, and the top end of the locking screw is pressed against the outside of the mounting section to tighten and fix the positioning rod on the support rod. When a different positioning rod needs to be replaced, it is only necessary to unscrew the locking screw and remove the positioning rod from the support rod. The operation is convenient and the connection is stable.

[0010] As a further improvement of the above technical solution, the top end of the positioning section is in a conical shape. The conical positioning section can play a guiding role when inserted into the inner hole of the workpiece, thereby improving the convenience of the positioning section to cooperate with the inner hole of the workpiece.

[0011] As a further improvement of the above technical solution, the positioning sleeve can be moved and positioned on the support rod in the up-down direction. According to workpieces of different heights, the positioning sleeve can also be moved and adjusted and positioned on the support rod in the up-down direction, so that the bottom end of the workpiece can abut and cling to the outer wall of the positioning sleeve, further improving the applicability to workpieces of different specifications.

[0012] As a further improvement of the above technical solution, the outer side of the positioning sleeve is connected with a tightening screw through a thread, and the end of the tightening screw abuts against the outer side of the support rod. When the positioning sleeve needs to be adjusted up and down, the tightening screw can be loosened away from the support rod, and the positioning sleeve can be moved up and down by removing the pressing force of the tightening screw. After the adjustment is completed, the tightening screw is tightened and abutted against the outer side of the support rod, so that the positioning sleeve is fastened to the support rod.

[0013] As a further improvement of the above technical solution, a positioning groove is provided on the top side of the base, and the positioning sleeve is embedded in the positioning groove. The positioning groove formed on the top side of the base can be used to position the positioning sleeve, which is beneficial to prevent the positioning sleeve from being polarized during the workpiece processing, and further improve the workpiece processing quality.

[0014] As a further improvement of the above technical solution, the utility model further comprises a workbench, and the base is arranged on the workbench. The base is fixed on the workbench, which can lower the overall center of gravity and improve the stability of the entire tooling when processing the workpiece.

[0015] As a further improvement of the above technical solution, a horizontally extending adjustment slot is provided on the top side of the workbench, an adjustment nut is provided in the adjustment slot, an adjustment screw is provided on the base, and the adjustment screw is connected to the adjustment nut. Before processing, the base can be adjusted along the length direction of the adjustment slot, and the adjustment nut moves in the adjustment slot. After the base is moved into place according to processing needs, the adjustment screw and the adjustment nut are locked together, so that the base is fastened to the workbench. In this way, multiple bases can be configured according to processing needs, and the spacing between multiple bases can be adjusted to improve the flexibility and convenience of production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is an overall stereogram of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the entire utility model after the workbench is removed along the center line of the support rod.

[0019] In the attached drawings: 100-base, 110-positioning rod, 210-support rod, 211-locking screw, 221-positioning section, 222-installing section, 300-positioning sleeve, 310-tightening screw, 400-workbench, 410-adjusting slot, 420-adjusting screw. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figure 1 and Figure 2 A center hole drilling tool includes a base 100, a shaft positioning piece and a positioning sleeve 300, wherein the shaft positioning piece is arranged on the base 100, and a positioning section 221 extending vertically upward is formed on the shaft positioning piece; the positioning sleeve 300 is sleeved on the outside of the shaft positioning piece, and the positioning sleeve 300 is located below the positioning section 221, and the outer diameter of the positioning sleeve 300 gradually increases from top to bottom.

[0025] As can be seen from the above, the base 100 is provided with an axis positioning member for positioning the workpiece. Before processing, the workpiece is first inserted into the axis positioning member, and the positioning section 221 is further inserted into the inner hole of the workpiece to achieve the matching positioning of the top of the workpiece, while the bottom end of the workpiece is abutted against the outside of the positioning sleeve 300. The outer wall of the positioning sleeve 300 that gradually increases downward can better adapt to the bottom shape of the workpiece. When the workpiece is pressed downward against the outside of the positioning sleeve 300, the bottom position of the workpiece is also corrected to be coaxial with the positioning sleeve 300, completing the upper and lower position positioning of the workpiece, which effectively improves the convenience of positioning the workpiece, saves the correction process after positioning the workpiece, and ensures the verticality of the workpiece positioning, which is beneficial to ensure the concentricity when processing the two center holes of the workpiece, thereby improving the overall processing efficiency.

[0026] In the above embodiment, after the workpiece is inserted into the shaft positioning member, the friction between the positioning section 221 and the inner hole of the workpiece can be used to limit the relative rotation of the workpiece outside the shaft positioning member. At this time, when the workpiece is punched, the processing drill bit is easy to drive the workpiece to rotate, thereby affecting the stability of the workpiece positioning. In order to better position the workpiece, in this embodiment, the top side of the base 100 is provided with a plurality of positioning rods 110 around the shaft positioning member, and the number of positioning rods 110 can be one, two or three. After the workpiece is inserted into the shaft positioning member and fixed, the plurality of positioning members are respectively inserted into the corresponding holes at the bottom of the workpiece, so that the workpiece can be further positioned, effectively preventing the workpiece from rotating during processing, and improving the processing quality.

[0027] In practical applications, the positioning rod 110 can be installed and removed from the base 100, and can be installed according to the use requirements of different workpieces, so as to facilitate the adaptation and use of different workpieces.

[0028] The mounting section 222 on the shaft positioning member needs to adapt to the shape of the inner hole of the workpiece so as to improve the stability when positioning the workpiece. Since the shape of the mounting section 222 is fixed, the shaft positioning member can only be used for positioning workpieces with such inner hole shapes. In order to improve the versatility of the entire tooling, in this embodiment, the shaft positioning member includes a support rod 210 and a positioning rod 110, the support rod 210 is arranged on the base 100, the positioning sleeve 300 is sleeved on the outside of the support rod 210, the positioning rod 110 is detachably connected to the top of the support rod 210, and the positioning section 221 is formed on the outside of the positioning rod 110. Before positioning the workpiece, positioning rods 110 with different outer diameters can be selected according to the requirements of the inner holes of different workpieces and assembled on the top of the support rod 210. When in use, the positioning section 221 formed on the outer side of the positioning rod 110 is used to cooperate and limit the inner hole of the workpiece, so as to position the top of the workpiece, and the bottom end of the workpiece is against the positioning sleeve 300 on the outer side of the support rod 210. Since the outer side of the positioning sleeve 300 itself has a conical surface, it can adapt to the positioning of the bottom ends of workpieces with different diameters. This can better adapt to the installation and positioning of different workpieces and improve the versatility of the tooling.

[0029] There are many ways to detachably connect the positioning rod 110 to the top of the support rod 210, such as connecting the two with each other through a buckle, or connecting the two with each other through a thread. In the present embodiment, a mounting hole is provided at the top of the support rod 210, and a mounting section 222 is formed at the bottom end of the positioning rod 110. The mounting section 222 is inserted into the mounting hole, and a locking screw 211 is passed through the outer side of the support rod 210, and the end of the locking screw 211 is pressed against the outer side of the mounting section 222. When assembling the positioning rod 110, the mounting section 222 at the bottom end of the positioning rod 110 can be inserted into the mounting hole at the top end of the support rod 210. The mounting section 222 and the mounting hole are connected in cooperation, so that the positioning rod 110 can be quickly positioned on the support rod 210. Then, a locking screw 211 is passed through the outside of the support rod 210, and the top end of the locking screw 211 is pressed against the outside of the mounting section 222 to tighten and fix the positioning rod 110 on the support rod 210. When a different positioning rod 110 needs to be replaced, the locking screw 211 only needs to be unscrewed and the positioning rod 110 can be removed from the support rod 210. The operation is convenient and the connection is stable.

[0030] In some embodiments, the top end of the positioning section 221 is conical in shape. The conical positioning section 221 can play a guiding role when inserted into the inner hole of the workpiece, thereby improving the convenience of the positioning section 221 to cooperate with the inner hole of the workpiece.

[0031] Workpieces of different specifications have different heights. When the height of the workpiece is small, after the workpiece is inserted into the outer side of the positioning rod 110, the bottom end of the workpiece may fail to press against the positioning sleeve 300. In order to further improve the versatility of the entire tooling, in this embodiment, the positioning sleeve 300 can be moved and positioned in the vertical direction on the support rod 210. According to the workpieces of different heights, the positioning sleeve 300 can also be adjusted and positioned in the vertical direction on the support rod 210, so that the bottom end of the workpiece can be pressed against and tightly attached to the outer wall of the positioning sleeve 300, further improving the applicability to workpieces of different specifications.

[0032] There are many ways to position the positioning sleeve 300 on the support rod 210. For example, a plurality of holes are provided on the support rod 210 in the up-down direction, and positioning pins are provided on the outside of the positioning sleeve 300. After the positioning sleeve 300 is moved into position on the support rod 210, the positioning pins are inserted into the holes that are directly opposite to the positioning sleeve 300. In this embodiment, a tightening screw 310 is threadedly connected to the outside of the positioning sleeve 300, and the end of the tightening screw 310 abuts against the outside of the support rod 210. When the positioning sleeve 300 needs to be adjusted up and down, the tightening screw 310 can be loosened away from the support rod 210. At this time, the positioning sleeve 300 can be moved up and down under the pressure of the tightening screw 310. After the adjustment is completed, the tightening screw 310 is tightened and abutted against the outside of the support rod 210, so that the positioning sleeve 300 is fastened to the support rod 210.

[0033] In some embodiments, a positioning groove is provided on the top side of the base 100, and the positioning sleeve 300 is embedded in the positioning groove. The positioning sleeve 300 can be positioned by using the positioning groove formed on the top side of the base 100, which is beneficial to prevent the positioning sleeve 300 from being polarized during the processing of the workpiece, and further improve the processing quality of the workpiece. In practical applications, when the outer side of the positioning sleeve 300 is connected to the top screw 310, a notch can be provided on the base 100 at a position directly opposite to the top screw 310. When the positioning sleeve 300 needs to be adjusted, a tool can be used to pass through the notch to adjust the top screw 310.

[0034] The utility model further comprises a workbench 400, and the base 100 is arranged on the workbench 400. The base 100 is fixed on the workbench 400, which can lower the overall center of gravity and improve the stability of the entire tooling when processing a workpiece.

[0035] In some embodiments, a horizontally extending adjustment groove 410 is provided on the top side of the workbench 400, and an adjustment nut is provided in the adjustment groove 410. An adjustment screw 420 is passed through the base 100, and the adjustment screw 420 is connected to the adjustment nut. In actual applications, the notch of the adjustment groove 410 narrows toward the center position, so that the adjustment nut cannot directly escape upward from the adjustment groove 410 after being installed. Therefore, the shape of the adjustment nut can be an inverted T-shape, with an adjustment nut and an adjustment nut that are matched and connected to each other as a connection group. Two or more connection groups can be provided between the base 100 and the workbench 400, thereby improving the stability of the installation of the base 100. Before processing, the base 100 can also be adjusted along the length direction of the adjustment groove 410. At this time, the adjusting nut moves in the adjusting groove 410. After the base 100 is moved into place according to processing needs, the adjusting screw 420 and the adjusting nut are locked with each other, so that the base 100 is fastened to the workbench 400. In this way, multiple bases 100 can be configured according to processing needs, and the spacing between multiple bases 100 can be adjusted, thereby improving the flexibility and convenience of production and processing.

[0036] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A center hole punching tool, characterized in that: include: Base (100); An axis positioning member is arranged on the base (100), and a positioning section (221) extending vertically upward is formed on the axis positioning member; A positioning sleeve (300) is sleeved on the outside of the shaft positioning member. The positioning sleeve (300) is located below the positioning section (221). The outer diameter of the positioning sleeve (300) gradually increases from top to bottom.

2. A center hole punching tool according to claim 1, characterized in that: A plurality of positioning rods (110) are arranged on the top side of the base (100) and surround the shaft positioning member.

3. A center hole punching tool according to claim 1, characterized in that: The shaft positioning member comprises a support rod (210) and a positioning rod (110); the support rod (210) is arranged on the base (100); the positioning sleeve (300) is sleeved on the outside of the support rod (210); the positioning rod (110) is detachably connected to the top end of the support rod (210); and the positioning section (221) is formed on the outside of the positioning rod (110).

4. A center hole punching tool according to claim 3, characterized in that: The top end of the support rod (210) is provided with a mounting hole, the bottom end of the positioning rod (110) is formed with a mounting section (222), the mounting section (222) is inserted into the mounting hole, and the outer side of the support rod (210) is penetrated by a locking screw (211), and the end of the locking screw (211) is pressed against the outer side of the mounting section (222).

5. A center hole punching tool according to claim 3, characterized in that: The top end of the positioning section (221) is in a conical shape.

6. A center hole punching tool according to claim 3, characterized in that: The positioning sleeve (300) can be moved and positioned in the up and down directions on the support rod (210).

7. A center hole punching tool according to claim 6, characterized in that: The outer side of the positioning sleeve (300) is connected to a tightening screw (310) via a thread, and the end of the tightening screw (310) abuts against the outer side of the support rod (210).

8. The center hole punching tool according to claim 1, characterized in that: A positioning groove is provided on the top side of the base (100), and the positioning sleeve (300) is embedded in the positioning groove.

9. The center hole punching tool according to claim 1, characterized in that: It also includes a workbench (400), and the base (100) is arranged on the workbench (400).

10. A center hole punching tool according to claim 9, characterized in that: The top side of the workbench (400) is provided with a horizontally extending adjustment slot (410), an adjustment nut is provided in the adjustment slot (410), an adjustment screw (420) is passed through the base (100), and the adjustment screw (420) is connected to the adjustment nut.

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