AU2016101623A4 - Tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece - Google Patents
Tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece Download PDFInfo
- Publication number
- AU2016101623A4 AU2016101623A4 AU2016101623A AU2016101623A AU2016101623A4 AU 2016101623 A4 AU2016101623 A4 AU 2016101623A4 AU 2016101623 A AU2016101623 A AU 2016101623A AU 2016101623 A AU2016101623 A AU 2016101623A AU 2016101623 A4 AU2016101623 A4 AU 2016101623A4
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- Australia
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- groove section
- gear
- right groove
- center hole
- machine tool
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Abstract
Title: TOOLING FOR MACHINING TEETH OF A GEAR HAVING A NON-CIRCULAR CENTER HOLE WHICH IS EASY TO FIX A WORKPIECE Abstract A tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece, comprising a machine tool spindle one-piece mandrel arranged on a machine tool and a rear top cover fitted with the machine tool spindle one-piece mandrel for fixing a gear having a non-circular center hole; one end of the machine tool spindle one-piece mandrel is fixed on the machine tool, while a left groove which can be matched with a step of the gear having a non-circular center hole is formed at the other end of the machine tool spindle one-piece mandrel; and, a right groove which can be matched with the step of the gear having a non-circular center hole is formed at one end of the rear top cover, while an external conical groove matched with a tip of the machine tool is provided at the other end of the rear top cover; the right groove of the rear top cover comprises a first right groove section, a second right groove section and a third right groove section; the aperture of the first right groove section is greater than that of the second right groove section, and the aperture of the second right groove section is greater than that of the third right groove section; and, the step of the gear having a non-circular center hole successively passes through the first right groove section and the second right groove section and then extends into the third left groove section. 1 4:3 424 1 <3 2 122,
Description
2016101623 14 Sep 2016
Description
TOOLING FOR MACHINING TEETH OF A GEAR HAVING A NON-CIRCULAR CENTER HOLE WHICH IS EASY TO FIX A WORKPIECE
Technical Field of the Invention
The present invention relates to a tooling for machining teeth of a gear having a non-circular center hole.
Background of the Invention
Usually, gears are sheathed on a spindle and then clamped by means of locking by bolts or in other ways, and then gear hobbing is performed. However, some gears having a non-circular center hole (e.g., gears having a horseshoe-shaped hole) cannot be sheathed on the spindle. Therefore, a tooling for clamping and fixing a gear having a non-circular center hole for purpose of performing hobbing on the gear having a non-circular center hole is needed.
Summary of the Invention
An objective of the present invention is to provide a tooling for machining teeth of a gear having a non-circular center hole, which can clamp and fix the gear having a non-circular center hole.
To realize this purpose, the present invention employs the following technical solution. A tooling for machining teeth of a gear having a non-circular center hole is provided, including a machine tool spindle one-piece mandrel arranged on a machine tool and a rear top cover fitted with the machine tool spindle one-piece mandrel for fixing a gear having a non-circular center hole, wherein one end of the machine tool spindle one-piece mandrel is fixed on the machine tool, while a left groove which can be matched with a step of the gear having a non-circular center hole is formed at the other end of the machine tool 1 2016101623 14 Sep 2016 spindle one-piece mandrel; and, a right groove which can be matched with a step of the gear having a non-circular center hole is formed at one end of the rear top cover, while an external conical groove matched with a tip of the machine tool is provided at the other end of the rear top cover; the aperture of the first right groove section is greater than that of the second right groove section, and the aperture of the second right groove section is greater than that of the third right groove section; and, the step of the gear having a non-circular center hole successively passes through the first right groove section and the second right groove section and then extends into the third left groove section. In the present invention, grooves matched with side steps of the gear are provided, and steps on the two sides of the gear having a non-circular center hole are interference fitted within the grooves, and by compressing by the tip, the gear having a non-circular center hole is fixed axially and circumferentially.
Preferably, the rear top cover comprises a tubular sleeve and a top plug having, on an outer side thereof, an external conical groove matched with the tip of the machine tool; the top plug is interference fitted within the sleeve; and a stopper for preventing the top plug from being completely sunk into the sleeve is provided on the outer side of the top plug.
The tooling of the present invention may clamp and fix a gear having a non-circular center hole for the purpose of performing hobbing on the gear having a non-circular center hole.
Brief Description of the Drawings
Fig. 1 is a structure diagram of the present invention;
Fig. 2 is another structure diagram of the present invention; and
Fig. 3 is a sectional diagram of the present invention.
Detailed Description of the Invention
As shown in Fig. 1, Fig. 2 and Fig. 3, a tooling for machining teeth of a gear having a non-circular center hole of the present invention includes a 2 2016101623 14 Sep 2016 machine tool spindle one-piece mandrel 1 arranged on a machine tool and a rear top cover 2 fitted with the machine tool spindle one-piece mandrel for fixing a gear having a non-circular center hole. One end of the machine tool spindle one-piece mandrel is fixed on a machine tool spindle 9, while a left groove 4 which can be matched with a step 31 of the gear 3 having a non-circular center hole is formed at the other end of the machine tool spindle one-piece mandrel. A right groove 5 which can be matched with the step 31 of the gear 3 having a non-circular center hole is formed at one end of the rear top cover 2, while an external conical groove 61 matched with a tip 6 of the machine tool is provided at the other end of the rear top cover 2.
As shown in Fig. 3, the left groove 4 of the machine tool spindle one-piece mandrel 1 includes a first left groove section 41, a second left groove section 42 and a third left groove section 43. The aperture of the first left groove section 41 is greater than that of the second left groove section 42, and the aperture of the second left groove section 42 is greater than that of the third left groove section 43.The step 31 on the left side of the gear 3 having a non-circular center hole passes through the first left groove section 41 and then extends into the second left groove section 42.
The right groove 5 of the rear top cover 2 includes a first right groove section 51, a second right groove section 52 and a third right groove section 53. The aperture of the first right groove section 51 is greater than that of the second right groove section 52, and the aperture of the second right groove section 52 is greater than that of the third right groove section 53. The step 31 on the right side of the gear 3 having a non-circular center hole successively passes through the first right groove section 51 and the second right groove section 52 and then extends into the third left groove section 53.Rubber gaskets may be placed within the first left groove section 41 and the first right groove section 42.
The rear top cover includes a tubular sleeve 21 and a top plug 22 having, on an outer side thereof, an external conical groove 61 matched with the tip of 3 2016101623 14 Sep 2016 the machine tool; the top plug 22 is interference fitted within the sleeve 21; and a stopper for preventing the top plug from being completely sunk into the sleeve is provided on the outer side of the top plug. An internal conical groove 62 matched with the tip is provided on the inner side of the top plug 22.
As shown in Fig. 2, the machine tool spindle one-piece mandrel 1 in the present invention is fixed on a hobbing machine spindle 9, the step 31 on one side of the gear 3 having a non-circular center hole is clamped into the left groove 4, so that the step on the left side is in interference fit with the second left groove section 42. Then, the step on the other side of the gear 3 having a non-circular center hole is clamped into the rear top cover 2, so that the step on the right side is in interference fit with the third right groove section. Finally, the rear top cover 2 is tightly compressed by the tip 6.As annular bulges are formed on the first left groove section 41 and the first right groove section, the stressed area is reduced and the pressure onto the gear face of the gear 3 having a non-circular center hole is increased, so that the gear may be better fixed by the tooling of the present invention. 4
Claims (2)
- Claims1. A tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece, comprising a machine tool spindle one-piece mandrel arranged on a machine tool and a rear top cover fitted with the machine tool spindle one-piece mandrel for fixing a gear having a non-circular center hole; one end of the machine tool spindle one-piece mandrel is fixed on the machine tool, while a left groove which can be matched with a step of the gear having a non-circular center hole is formed at the other end of the machine tool spindle one-piece mandrel; and, a right groove which can be matched with the step of the gear having a non-circular center hole is formed at one end of the rear top cover, while an external conical groove matched with a tip of the machine tool is provided at the other end of the rear top cover; the right groove of the rear top cover comprises a first right groove section, a second right groove section and a third right groove section; the aperture of the first right groove section is greater than that of the second right groove section, and the aperture of the second right groove section is greater than that of the third right groove section; and, the step of the gear having a non-circular center hole successively passes through the first right groove section and the second right groove section and then extends into the third left groove section.
- 2. The tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece according to claim 1, characterized in that the rear top cover comprises a tubular sleeve and a top plug having, on an outer side thereof, an external conical groove matched with the tip of the machine tool; the top plug is interference fitted within the sleeve; and a stopper for preventing the top plug from being completely sunk into the sleeve is provided on the outer side of the top plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2016101623A AU2016101623A4 (en) | 2016-09-14 | 2016-09-14 | Tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2016101623A AU2016101623A4 (en) | 2016-09-14 | 2016-09-14 | Tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2016101623A4 true AU2016101623A4 (en) | 2016-11-10 |
Family
ID=57221623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016101623A Ceased AU2016101623A4 (en) | 2016-09-14 | 2016-09-14 | Tooling for machining teeth of a gear having a non-circular center hole which is easy to fix a workpiece |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2016101623A4 (en) |
-
2016
- 2016-09-14 AU AU2016101623A patent/AU2016101623A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |