Hobbing clamp capable of machining small modulus

Abstract

The utility model relates to a gear hobbing fixture capable of machining small modulus, which comprises a fixture body, the fixture body comprises a gear hobbing base, a gear hobbing mandrel and a gear hobbing gland, and the gear hobbing mandrel is mounted on the gear hobbing base; the gear hobbing mandrel comprises a clamping shaft and a mandrel seat, the diameter of the clamping shaft is matched with a center hole of a planet gear workpiece, a mandrel positioning groove is formed in the connecting portion of the clamping shaft and the mandrel seat, and the mandrel positioning groove is matched with the end face of the planet gear workpiece. The gear hobbing gland is provided with a gland inner hole matched with the clamping shaft, the gear hobbing gland is arranged outside the clamping shaft in a sleeving mode, the end of the gear hobbing gland is provided with a gland positioning groove, and the gland positioning groove is matched with the end face of a planet gear workpiece. The gear hobbing clamp capable of machining the small modulus is reasonable in design, simple, practical, high in positioning accuracy and stable in clamping.

Description

Technical Field

[0001] This utility model relates to a gear hobbing fixture capable of processing small modules, specifically a gear hobbing fixture capable of processing small module products with a 2.5mm inner hole in discs. Background Technology

[0002] The sweeping machine has a two-stage planetary gear in the planetary reduction mechanism. It needs to meet the requirements of service life and product precision. The product material is usually steel with a module of 0.35. The gear precision is at the national standard level 6, and the tooth runout is required to be within 0.01. Due to the high precision of the product and the inner hole of the planetary gear is only 2.5mm, special fixtures are required to meet the processing requirements. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the prior art and to provide a gear hobbing fixture that is reasonably designed, simple and practical, highly accurate in positioning, and stable in clamping, capable of processing small modules.

[0004] The technical solution adopted by this utility model to solve the above problems is: a gear hobbing fixture that can process small modules, including a fixture body, the fixture body including a gear hobbing base, a gear hobbing mandrel and a gear hobbing cover, the gear hobbing mandrel being mounted on the gear hobbing base;

[0005] The hobbing mandrel includes a clamping shaft and a mandrel seat. The diameter of the clamping shaft matches the center hole of the planetary gear workpiece. A mandrel positioning groove is provided at the connection between the clamping shaft and the mandrel seat. The mandrel positioning groove matches the end face of the planetary gear workpiece.

[0006] The gear hobbing cap has an inner hole that mates with the clamping shaft. The gear hobbing cap is sleeved on the outside of the clamping shaft. The end of the gear hobbing cap has a cap positioning groove that mates with the end face of the planetary gear workpiece.

[0007] Preferably, the central axis of the clamping shaft coincides with the central axis of the inner hole of the pressure cap.

[0008] Preferably, the mandrel seat and the gear hobbing base are fixed by internal hexagon screws.

[0009] This utility model adopts a clamping method of hobbing gland and hobbing mandrel. The hobbing mandrel and planetary gear workpiece are ground together. The planetary gear workpiece is clamped stably, ensuring that the processing meets the accuracy requirements. The mandrel positioning groove and the gland positioning groove are respectively engaged with the two end faces of the planetary gear workpiece, so that the planetary gear workpiece is positioned in the horizontal direction, ensuring the stability of the processing after clamping.

[0010] The central hole of the planetary gear workpiece of this invention has a clearance fit with the clamping shaft, which enables the planetary gear workpiece to be clamped quickly, thus improving production efficiency.

[0011] Compared with the prior art, this utility model has the following advantages and effects: 1. It adopts the clamping method of hobbing gland and hobbing mandrel. The mandrel positioning groove and gland positioning groove respectively cooperate with the two end faces of the planetary gear workpiece, ensuring the stable clamping of the planetary gear workpiece and ensuring that the processing meets the accuracy requirements; 2. The central hole of the new planetary gear workpiece is clearance-fitted with the clamping shaft, which can quickly clamp the planetary gear workpiece and improve production efficiency. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the gear hobbing mandrel structure according to an embodiment of the present invention.

[0014] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0015] Figure 4 This is a schematic diagram of the toothed gland portion of an embodiment of the present invention.

[0016] In the figure: 1. Clamp body, 2. Hobbing base, 3. Hobbing mandrel, 4. Hobbing gland, 5. Planetary gear workpiece, 6. Clamping shaft, 7. Mandrel seat, 8. Mandrel positioning groove, 9. Inner hole of gland, 10. Gland gland positioning groove. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0018] See Figure 1-4 The gear hobbing fixture capable of processing small modules in this embodiment includes a fixture body 1. The fixture body 1 includes a gear hobbing base 2, a gear hobbing mandrel 3, and a gear hobbing cover 4. The gear hobbing mandrel 3 is mounted on the gear hobbing base 2. The gear hobbing mandrel 3 includes a clamping shaft 6 and a mandrel seat 7. The diameter of the clamping shaft 6 matches the center hole of the planetary gear workpiece 5. A mandrel positioning groove 8 is provided at the connection between the clamping shaft 6 and the mandrel seat 7. The mandrel positioning groove 8 matches the end face of the planetary gear workpiece 5. The gear hobbing cover 4 has a cover inner hole 9 that matches the clamping shaft 6. The gear hobbing cover 4 is sleeved on the outside of the clamping shaft 6. A cover positioning groove 10 is provided at the end of the gear hobbing cover 4. The cover positioning groove 10 matches the other end face of the planetary gear workpiece 5.

[0019] In this embodiment, the mandrel seat 6 and the gear hobbing base 2 are fixed together by internal hexagon screws.

[0020] This embodiment uses a hobbing mandrel 4 and a hobbing spindle 3 for clamping. The hobbing spindle 3 and the planetary gear workpiece 5 are ground together. The planetary gear workpiece 5 is clamped stably to ensure that the machining meets the accuracy requirements. The mandrel positioning groove 8 and the mandrel positioning groove 10 are respectively engaged with the two end faces of the planetary gear workpiece 5. The central axis of the clamping shaft 6 coincides with the central axis of the inner hole 9 of the mandrel, so that the planetary gear workpiece 5 is positioned in the horizontal direction, ensuring the stability of the machining process after clamping.

[0021] In this embodiment, the center hole of the planetary gear workpiece 5 is clearance-fitted with the clamping shaft 6, which enables the planetary gear workpiece 5 to be clamped quickly, thus improving production efficiency.

[0022] Furthermore, it should be noted that all equivalent or simple variations made based on the structure, features, and principles of this utility model patent are included within the scope of protection of this utility model patent.

Claims

1. A gear hobbing fixture capable of machining small modules, characterized in that: The clamping body includes a gear hobbing base, a gear hobbing mandrel, and a gear hobbing cover, wherein the gear hobbing mandrel is mounted on the gear hobbing base. The hobbing mandrel includes a clamping shaft and a mandrel seat. The diameter of the clamping shaft matches the center hole of the planetary gear workpiece. A mandrel positioning groove is provided at the connection between the clamping shaft and the mandrel seat. The mandrel positioning groove matches the end face of the planetary gear workpiece. The gear hobbing cap has an inner hole that mates with the clamping shaft. The gear hobbing cap is sleeved on the outside of the clamping shaft. The end of the gear hobbing cap has a cap positioning groove that mates with the end face of the planetary gear workpiece.

2. The gear hobbing fixture capable of machining small modules according to claim 1, characterized in that: The central axis of the clamping shaft coincides with the central axis of the inner hole of the pressure cap.

3. The gear hobbing fixture capable of machining small modules according to claim 1, characterized in that: The mandrel seat and the gear hobbing base are fixed together by internal hexagon screws.

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