Gear key groove machining device

Abstract

The utility model relates to the technical field of key groove machining, in particular to a gear key groove machining device which comprises a gear piece, four key groove assemblies used for forming key grooves in the inner hole wall of the gear piece and frequency vibration stamping mechanisms arranged on the four key groove assemblies. The key groove assembly comprises milling cutters, and the number of the milling cutters is four. A plurality of inserting holes which are uniformly distributed are formed in the ruler-shaped milling cutters, and the matrix type material vibrating assemblies are arranged in the milling cutters, so that the matrix type material vibrating assemblies can be reset and supported by a plurality of pressure springs, and when the four ruler-shaped milling cutters are pushed by external hydraulic sub-rods to carry out keyway operation on the inner hole wall of a gear piece, the keyway operation can be carried out on the inner hole wall of the gear piece; the striker in high-frequency vibration can apply impact force to the matrix type material vibration assembly, and at the moment, sweeps accumulated in a milling opening can be quickly emptied in the reciprocating lifting process of the milling cutter, so that the accumulated sweeps are prevented from scratching the surface of a key groove.

Description

Technical Field

[0001] The utility model relates to the technical field of keyway processing, in particular to a gear keyway processing device. Background Art

[0002] The gear keyway is mainly a groove machined into the fire hole on the shaft to match the key, which is used to install the key and then transmit torque.

[0003] At present, the main method for gear keyways is punching and milling the inner hole wall. During the reciprocating punching and milling process along the inner hole wall of the gear with the gradient blade on the conventional milling cutter, the waste chips milled out are easily clogged inside the milling mouth. As the milling cutter reciprocates, the waste chips accumulated in the milling mouth are likely to cause secondary scratches to the gear keyway, and the subsequent further grinding of the scratches will affect the accuracy of the keyway.

[0004] In view of this, a gear keyway processing device is designed to solve the above problems. Utility Model Content

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] To this end, the technical solution adopted in this utility model is:

[0007] A gear keyway processing device includes a gear part, four groups of keyway assemblies for making keyways for the inner hole wall of the gear part, and a frequency vibration stamping mechanism arranged on the four groups of keyway assemblies; the keyway assemblies include four milling cutters; the frequency vibration stamping mechanism includes a top seat arranged on the top of the four milling cutters, a base arranged at the bottom of the milling cutters, and a base arranged on the top seat; the base is arranged on an external hydraulic sub-rod.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the width of the milling cutter gradually decreases from top to bottom, and a plurality of evenly distributed through holes are opened inside the milling cutter;

[0009] A plurality of compression springs are arranged in the plurality of through holes, and a matrix type shock material assembly is arranged in the plurality of through holes.

[0010] In a preferred example, the present invention can be further configured as follows: the matrix shock material assembly is composed of a plurality of T-shaped sub-strike pins, and the plurality of sub-strike pins penetrate to the outside of the through hole and the column heads gradually increase from top to bottom.

[0011] In a preferred example, the present invention can be further configured as follows: the frequency shock punching mechanism further includes a striker;

[0012] The striker is composed of a quadrangular prism and a guide rod, and a limiting hole is provided at the bottom of the quadrangular prism, and a pin rod is provided in the groove at the top end of the guide rod.

[0013] In a preferred example, the present invention can be further configured as follows: a rectangular recessed hole is provided inside the base, and a vertical rod penetrating into the limiting hole is provided in the middle of the rectangular recessed hole.

[0014] In a preferred example, the present invention can be further configured as follows: a return spring is provided on both the vertical rod in the base and the guide rod in the striker.

[0015] In a preferred embodiment, the present invention can be further configured as follows: two semi-cylindrical clamping plates are provided on the top of the base, and fixing bolts that are locked on the external hydraulic sub-rod are provided in the semi-cylindrical clamping plates;

[0016] A transmission assembly is provided in the base;

[0017] The number of the fixing bolts is two.

[0018] In a preferred example, the present invention can be further configured as follows: the transmission assembly is composed of a chassis and a motor, and an eccentric wheel is installed on the outer end of the transmission inside the motor;

[0019] A pull rod is movably mounted on the eccentric rotating wheel, and the bottom end of the pull rod is movably mounted on the pin rod.

[0020] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0021] 1. The utility model opens a plurality of evenly distributed insertion holes inside the ruler-shaped milling cutter and sets a matrix vibration material assembly inside the milling cutter. At this time, the matrix vibration material assembly is provided with reset support by a plurality of compression springs. When the four ruler-shaped milling cutters are pushed by the external hydraulic sub-rod to perform keyway operation on the inner hole wall of the gear part, the striker in high-frequency vibration can apply impact force to the matrix vibration material assembly. At this time, the waste chips accumulated in the milling mouth can be quickly emptied during the reciprocating lifting of the milling cutter to avoid the accumulated waste chips from scratching the keyway surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the present invention when in use;

[0023] Figure 2 A schematic diagram of the present utility model;

[0024] Figure 3 A schematic diagram of the present utility model;

[0025] Figure 4 A schematic diagram of the present utility model;

[0026] Figure 5 A schematic diagram of the present utility model;

[0027] Figure 6 It is a schematic view of the utility model.

[0028] Reference signs:

[0029] 100, gear part;

[0030] 200, keyway assembly; 210, milling cutter; 220, compression spring; 230, matrix type material shaking assembly;

[0031] 300, frequency shock stamping mechanism; 310, top seat; 320, base; 330, striker; 340, return spring; 350, base; 360, transmission assembly; 370, fixing bolt; 380, eccentric rotating wheel; 390, pull rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below in combination with specific embodiments and with reference to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] It is understood that the description is only exemplary and is not intended to limit the scope of the utility model.

[0034] Some embodiments of the utility model provide a gear keyway machining device, which is described below in combination with the drawings. Embodiment one

[0035] In combination with Figures 1-6 The utility model provides a gear keyway machining device, which comprises a gear part 100, four groups of keyway assemblies 200 for keyway machining of the inner hole wall of the gear part 100 and a frequency shock stamping mechanism 300 arranged on the four groups of keyway assemblies 200, the four groups of keyway assemblies 200 are arranged in a cross-shaped structure, and the frequency shock stamping mechanism 300 is arranged on an external hydraulic sub and provides the kinetic energy for stamping and milling of the four groups of keyway assemblies 200.

[0036] The keyway assembly 200 comprises a milling cutter 210, and the number of the milling cutter 210 is four;

[0037] The frequency shock stamping mechanism 300 comprises a striker 330, a top seat 310 arranged on the top of the four milling cutters 210, a base 320 arranged on the bottom of the milling cutter 210 and a base 350 arranged on the top seat 310;

[0038] The base 350 is arranged on the external hydraulic sub rod;

[0039] The top of the base 350 is provided with two semicylindrical clamping plates, and the semicylindrical clamping plates are provided with fixing bolts 370 locked on the external hydraulic sub rod;

[0040] A transmission assembly 360 is disposed within the base 350;

[0041] The number of fixing bolts 370 is two;

[0042] The transmission assembly 360 is composed of a chassis and a motor, and an eccentric wheel 380 is installed on the outer end of the transmission inside the motor;

[0043] A pull rod 390 is movably mounted on the eccentric wheel 380 , and the bottom end of the pull rod 390 is movably mounted on the pin rod.

[0044] When the existing ruler-shaped milling cutter is actually used, the waste chips milled out from the inner hole wall of the gear will accumulate in the milling mouth of the ruler-shaped milling cutter. As the external hydraulic rod drives the ruler-shaped milling cutter to rise and fall along the inner hole of the gear, the waste chips accumulated inside the milling mouth will scratch the keyway of the inner hole of the gear. At the same time, the exposed end of the keyway is sharp, so the gear after the initial keyway needs further polishing, deburring and other treatments.

[0045] The modified keyway device is improved on the existing ruler-shaped milling cutter by opening a plurality of evenly distributed through holes inside the milling cutter 210, and evenly distributing a plurality of sub-strike pins in the matrix-type shock material assembly 230 in the plurality of through holes. At this time, the plurality of sub-strike pins will be provided with elastic support force by a plurality of compression springs 220. In the initial state, one end of the sub-strike pin penetrates to the middle of the milling gap on the outside of the milling cutter 210. As the external hydraulic sub-rod drives the base 350 downward, the top seat 310 fixed on the base 350 and the four sets of keyway assemblies 200 can perform constant pressure keyway processing toward the inner hole of the gear part 100. As the waste chips are moved in the milling cutter, the gear part 100 is pressed against the top seat 310 and the four sets of keyway assemblies 200. The accumulation in the outer milling mouth of 210 can start the motor in the transmission assembly 360 at this time, and at the same time the driven eccentric wheel 380 will drive the pull rod 390 to rise and fall at a high frequency, and the firing pin 330 movably installed at the bottom end of the pull rod 390 can apply a constant extrusion pressure to the four groups of matrix vibration material components 230, and finally each sub-firing pin can quickly discharge the waste chips in the milling mouth to the outside, so as to avoid the keyway being scratched due to the accumulated waste chips during the resetting and lifting of the milling cutter 210 in the inner hole of the gear part 100. At the same time, the arc surface of the milling mouth of the milling cutter 210 can improve the smoothness of the keyway surface in the gear part 100. Example 2

[0046] Combine Figure 3-Figure 6 As shown, based on Example 1, the width of the milling cutter 210 gradually decreases from top to bottom, and a plurality of evenly distributed through holes are opened inside the milling cutter 210.

[0047] Preferably, the milling cutter 210 has an outer milling cut of an arc-shaped structure, the width of the multiple milling cuts gradually decreases from the top to the bottom, and a hole connected to the through hole is opened in the middle of the inner wall of the milling cut.

[0048] A plurality of compression springs 220 are disposed in the plurality of through holes, and a matrix-type shock material assembly 230 is disposed in the plurality of through holes;

[0049] The matrix shock material assembly 230 is composed of a plurality of T-shaped sub-strike pins, and the plurality of sub-strike pins penetrate to the outside of the through hole and the column heads gradually increase from top to bottom.

[0050] Preferably, the column head at one end of the sub-striker close to the striker 330 is in a cylindrical structure, and the other end of the sub-striker is adapted to penetrate into the hole and extend into the milling opening. Example 3

[0051] Combine Figure 3 and Figure 6 As shown, based on Example 1, a rectangular recessed hole is provided inside the base 320 .

[0052] Preferably, the top seat 310 and the base 320 are both made of stainless steel.

[0053] The striker 330 is composed of a quadrangular prism and a guide rod. A limit hole is provided at the bottom of the quadrangular prism, a pin is provided in the groove at the top of the guide rod, and a vertical rod is provided in the middle of the rectangular recessed hole that penetrates into the limit hole.

[0054] Return springs 340 are provided on the vertical rod in the base 320 and the guide rod in the striker 330 .

[0055] Preferably, the width of the quadrangular prism gradually decreases from the top to the bottom, and the inclined surface of the quadrangular prism is adapted to fit the column heads of the multiple sub-strike pins in the matrix shock material assembly 230.

[0056] The working principle and usage process of the present invention are as follows: the base 350 is pre-installed on the hydraulic sub-rod of the external stamping equipment, and then the two fixing bolts 370 are tightened with a wrench. At this time, the top seat 310 fixed to the bottom of the base 350 by multiple bolts will provide a lifting platform for the four sets of keyway assemblies 200, and the base 320 is fixed to the bottom of the four milling cutters 210 by multiple bolts. At this time, the four milling cutters 210 will be arranged in a cross-shaped structure;

[0057] When the hydraulic mechanism of the external stamping equipment is running, the hydraulic sub-rod drives the base 350 to descend as a whole. At the same time, the top seat 310 pushed by the base 350 will drive the four sets of keyway assemblies 200 to punch toward the inner hole of the gear part 100, and the four milling cutters 210 have a gradient milling opening on the outside to perform a keyway operation on the inner hole of the gear part 100 layer by layer. At this time, the waste chips milled out of the inner wall of the gear part 100 accumulate in the gap of the milling opening of the milling cutter 210, and then the motor in the transmission assembly 360 is started. As the motor runs, its internal transmission shaft drives the eccentric wheel 380 high The eccentric wheel 380 rotates at high speed, and the pull rod 390 movably installed on the guide rod away from the center of the circle will pull the striker 330 to vibrate at high frequency along the middle of the four keyway assemblies 200. At this time, the striker 330 can perform high-frequency impact on the four matrix vibration material assemblies 230. At the same time, each sub-striken pin in the matrix vibration material assembly 230 can squeeze out the waste chips accumulated in the milling mouth, thereby ensuring that the external hydraulic mechanism drives the frequency vibration stamping mechanism 300 and the keyway assembly 200 to move back and forth without pressurizing the milled waste chips and causing scratches on the inner hole wall of the gear part 100.

[0058] In this utility model, the term "plurality" refers to two or more, unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items. Terms such as "install," "connect," "connect," and "fix" should be understood broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0059] It should be noted that when an element is referred to as being "assembled to," "mounted to," "fixed to," or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0060] Throughout this specification, terms such as "one embodiment," "some embodiments," or "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gear keyway machining device, comprising a gear part (100), characterized in that: It also includes four sets of keyway assemblies (200) for forming keyways on the inner hole wall of the gear member (100) and a frequency vibration stamping mechanism (300) arranged on the four sets of keyway assemblies (200); The keyway assembly (200) includes a milling cutter (210), and the number of the milling cutters (210) is four; The frequency shock punching mechanism (300) comprises a top seat (310) arranged on the tops of the four milling cutters (210), a base (320) arranged on the bottoms of the milling cutters (210), and a pedestal (350) arranged on the top seat (310); The base (350) is arranged on an external hydraulic sub-rod.

2. A gear keyway machining device according to claim 1, characterized in that: The width of the milling cutter (210) gradually decreases from top to bottom, and a plurality of evenly distributed through holes are provided inside the milling cutter (210); A plurality of compression springs (220) are arranged in the plurality of through holes, and a matrix-type shock material assembly (230) is arranged in the plurality of through holes.

3. A gear keyway machining device according to claim 2, characterized in that: The matrix-type shock material assembly (230) is composed of a plurality of T-shaped sub-strike pins, and the plurality of sub-strike pins penetrate to the column heads outside the through holes and gradually increase from top to bottom.

4. The gear keyway machining device according to claim 1, characterized in that: The frequency shock punching mechanism (300) further includes a striker (330); The striker (330) is composed of a quadrangular prism and a guide rod, wherein a limiting hole is provided at the bottom of the quadrangular prism, and a pin is provided in the groove at the top end of the guide rod.

5. The gear keyway machining device according to claim 1, characterized in that: A rectangular concave hole is provided inside the base (320), and a vertical rod is provided in the middle of the rectangular concave hole and extends through the limiting hole.

6. The gear keyway machining device according to claim 1, characterized in that: A return spring (340) is provided on both the vertical rod in the base (320) and the guide rod in the striker (330).

7. The gear keyway machining device according to claim 1, characterized in that: Two semi-cylindrical clamping plates are provided on the top of the base (350), and fixing bolts (370) are provided in the semi-cylindrical clamping plates and are locked on the external hydraulic sub-rod; A transmission assembly (360) is provided in the base (350); The number of the fixing bolts (370) is two.

8. The gear keyway machining device according to claim 7, characterized in that: The transmission assembly (360) is composed of a chassis and a motor, and an eccentric wheel (380) is installed on the outer end of the transmission inside the motor; A pull rod (390) is movably mounted on the eccentric rotating wheel (380), and the bottom end of the pull rod (390) is movably mounted on the pin rod.

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