An output flange end face tooth hobbing jig

Abstract

The utility model discloses an output flange end face tooth hobbing fixture, its characterized in that: including fixture base, the top surface of fixture base has the locating plane, the middle part of locating plane has the accommodation cavity of subsidence, a plurality of tool setting grooves have on the locating plane, be provided with the locating pin on the locating plane, be provided with the expanding core shaft in the accommodation cavity, the expanding core shaft includes the taper shaft setting on the fixture base, the upper portion of taper shaft is provided with the expansion sleeve, the upper end of expansion sleeve is provided with the pressing plate, the upper end of taper shaft is provided with the compression screw, and the disc head of compression screw is compressed on the pressing plate. The utility model has the beneficial effects including: simple structure, and convenient clamping positioning, and high positioning accuracy, and the fixture base has the tool setting groove, and the tool setting precision of processing hobbing cutter is fully guaranteed, thereby the machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of clamps, specifically to a gear hobbing clamp for the output flange end face. Background Technology

[0002] The output flange is used to connect to the output shaft end of the reducer. To increase the connection rigidity of the output flange, toothed grooves need to be machined on the end face of the output flange to increase connection rigidity and torsional resistance. This end-face toothed connection can transmit greater torque and effectively resist bending moment and axial force. However, the machining of the flange end-face toothed groove usually involves gear hobbing, which places extremely high demands on machining accuracy and efficiency. Since the end-face toothed groove needs to mate with the convex tooth on the other end and the flange hole positions need to be relative, the positioning accuracy requirements for the output flange machining are extremely high. It is difficult to maintain the machining accuracy using conventional gear hobbing machines. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a gear hobbing fixture for the end face of an output flange, which has a simple structure, is easy to clamp, and has high positioning accuracy and high machining accuracy of the end face teeth.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A gear hobbing fixture for an output flange end face, characterized in that: it includes a fixture base, the top surface of which has a positioning plane, the middle of which has a recessed receiving cavity, the positioning plane having multiple tool setting grooves, a positioning pin being provided on the positioning plane, an expansion mandrel being provided in the receiving cavity, the expansion mandrel including a tapered shaft disposed on the fixture base, an expansion sleeve being provided on the upper part of the tapered shaft, a pressure plate being provided on the upper end of the expansion sleeve, and a clamping screw being provided on the upper end of the tapered shaft, the disc head of the clamping screw being pressed against the pressure plate.

[0006] Furthermore, the positioning pin is disposed on the axis of symmetry of the plurality of tool slots.

[0007] Furthermore, the upper part of the tapered shaft is a tapered portion, and the lower part is a smooth shaft portion. The expansion sleeve is fitted onto the tapered portion, and the smooth shaft portion is fitted with a spring. The spring is a compression spring, the upper end of the spring abuts against the expansion sleeve, and the lower end of the spring is limited on the fixture base.

[0008] Furthermore, the lower end of the tapered shaft is fixed to the fixture base.

[0009] The advantages of this utility model include: simple structure, convenient clamping and positioning, high positioning accuracy, and tool setting groove on the fixture base, which fully ensures the accurate tool setting of the hobbing tool, thereby improving the machining accuracy. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0013] One such Figure 1-2 The output flange end face gear hobbing fixture shown includes a fixture base 1. The top surface of the fixture base 1 has a positioning plane 2, which supports the lower end face of the output flange flange. A recessed receiving cavity 3 is located in the center of the positioning plane 2, within which the shaft portion of the output flange is placed. A positioning pin 5 is provided on the positioning plane 2 for positioning the flange hole of the output flange. An expansion mandrel is provided within the receiving cavity 3 for positioning and clamping the center shaft hole of the output flange. The expansion mandrel includes a tapered shaft 6 mounted on the fixture base 1, with an expansion sleeve 7 on the upper part of the tapered shaft 6. This expansion sleeve 7 is used for center positioning of the output flange and for tightening the output flange. The upper end of the expansion sleeve 7 is provided with a pressure plate 8, and the upper end of the tapered shaft 6 is provided with a clamping screw 9. The disc head of the clamping screw 9 is pressed against the pressure plate 8. By rotating the clamping screw 9, the pressure plate 8 is pressed down, and the pressure plate 8 squeezes the expansion sleeve 7 downward. The expansion sleeve 7 expands under the action of the tapered shaft 6, so that the expansion sleeve 7 can tighten the central shaft hole of the output flange.

[0014] To enable the hobbing cutter to quickly position the machining position of the toothed groove on the output flange, the positioning plane 2 in this embodiment has multiple tool setting grooves 4, and the positioning pin 5 is set on the axis of symmetry of the multiple tool setting grooves 4, and the flange hole and end face tooth position on the output flange correspond to each other.

[0015] To facilitate clamping, the upper part of the tapered shaft 6 is tapered, and the lower part is a smooth shaft. An expansion sleeve 7 is fitted onto the tapered part, and a spring 10 is fitted onto the smooth shaft. The spring 10 is a compression spring; its upper end abuts against the expansion sleeve 7, and its lower end is limited on the fixture base 1. When the clamping screw 9 is loosened, the spring 10 pushes the expansion sleeve 7 upwards, causing it to retract and allowing the output flange to be removed. The lower end of the tapered shaft 6 is fixed to the fixture base 1.

[0016] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gear hobbing fixture for the end face of an output flange, characterized in that: The fixture includes a fixture base (1), the top surface of which has a positioning plane (2), the middle part of which has a recessed receiving cavity (3), the positioning plane (2) has multiple tool setting grooves (4), the positioning plane (2) is provided with a positioning pin (5), the receiving cavity (3) is provided with an expansion mandrel, the expansion mandrel includes a tapered shaft (6) provided on the fixture base (1), the upper part of the tapered shaft (6) is provided with an expansion sleeve (7), the upper end of the expansion sleeve (7) is provided with a pressure plate (8), the upper end of the tapered shaft (6) is provided with a clamping screw (9), and the disc head of the clamping screw (9) is pressed against the pressure plate (8).

2. The output flange end face gear hobbing fixture according to claim 1, characterized in that: The positioning pin (5) is located on the axis of symmetry of the plurality of tool slots (4).

3. The output flange end face gear hobbing fixture according to claim 1, characterized in that: The upper part of the tapered shaft (6) is a tapered part, and the lower part is a smooth shaft part. The expansion sleeve (7) is sleeved on the tapered part. The smooth shaft part is sleeved with a spring (10). The spring (10) is a compression spring. The upper end of the spring (10) abuts against the expansion sleeve (7), and the lower end of the spring (10) is limited on the clamp base (1).

4. The output flange end face gear hobbing fixture according to claim 1, characterized in that: The lower end of the tapered shaft (6) is fixed on the fixture base (1).

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