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CN-224212739-U - Gear shaft carburizing and charging tool

CN224212739UCN 224212739 UCN224212739 UCN 224212739UCN-224212739-U

Abstract

The utility model discloses a gear shaft carburizing and charging tool, and relates to the technical field of carburizing tools. The lifting mechanism comprises a mounting underframe, a mounting upper cover, an eye bolt and a gear shaft clamping assembly, wherein the gear shaft clamping assembly is arranged between the mounting underframe and the mounting upper cover and is provided with a plurality of coaxial rings uniformly distributed, the gear shaft clamping assembly comprises two guide cylindrical rods, a first pointed cone and a gravity positioner, the mounting underframe comprises a circular bottom plate, and the two guide cylindrical rods and the first pointed cone are respectively and vertically arranged on the upper surface of the circular bottom plate. According to the fixture, the double-pointed-cone coaxial positioning structure and the gravity positioner are adopted to realize the function of self-weight sliding centering and jackscrew locking, the fixture is designed to realize rapid and accurate clamping of the gear shaft, uneven carburization caused by shielding of the fixture is avoided, the consistency of carbon concentration gradient on the surface of the gear shaft is ensured, the thickness and hardness uniformity of a carburized layer are improved, the fixture replacement frequency caused by size change is reduced, and the carburized quality and production efficiency of the gear shaft are improved.

Inventors

  • Jing Shenguang
  • ZHANG YINGSHUAI
  • Gao Guangcong

Assignees

  • 山东海利传动机械制造有限公司

Dates

Publication Date
20260508
Application Date
20250427

Claims (6)

  1. 1. Gear shaft carburization dress stove frock, its characterized in that: The lifting bolt comprises a mounting underframe (1), a mounting upper cover (2), lifting bolts (3) and a gear shaft clamping assembly, wherein a plurality of coaxial rings are uniformly distributed and mounted between the mounting underframe (1) and the mounting upper cover (2); The gear shaft clamping assembly comprises two guide cylindrical rods (4), a first pointed cone (5) and a gravity positioner (6); The mounting underframe (1) comprises a round bottom plate (11); The two guide cylindrical rods (4) and the first pointed cone (5) are respectively and vertically arranged on the upper surface of the circular base plate (11), and the two guide cylindrical rods (4) are axially symmetrically arranged relative to the first pointed cone (5); The gravity positioner (6) is vertically and slidably arranged on the two guide cylindrical rods (4), a second pointed cone (61) is fixed at the center of the bottom of the gravity positioner (6), and the second pointed cone (61) and the first pointed cone (5) in the same gear shaft clamping assembly are coaxially arranged; The installation upper cover (2) is inserted and installed on the installation underframe (1) and the guide cylindrical rods (4), and the eye bolts (3) penetrate through the installation upper cover (2) and are fixedly connected with the installation underframe (1) through threads.
  2. 2. The gear shaft carburizing and charging tool according to claim 1 is characterized in that a plurality of vent holes (12) are formed in the round bottom plate (11), a cylindrical rod (13) is fixed in the center of the round bottom plate (11), a rectangular slot (14) is formed in the upper end of the cylindrical rod (13), and a threaded blind hole (15) in threaded connection with the lifting bolt (3) is formed in the bottom surface of the rectangular slot (14).
  3. 3. The gear shaft carburizing and charging tool according to claim 2, wherein the mounting upper cover (2) comprises a circular plate (21), a cylindrical head (22) is fixed at the center of the bottom surface of the circular plate (21), a rectangular plug (23) matched with the rectangular slot (14) is fixed at the lower end of the cylindrical head (22), circular holes (24) matched with the eye bolts (3) are formed in the circular plate (21), the cylindrical head (22) and the rectangular plug (23), and a plurality of positioning jacks (25) matched with the guiding cylindrical rods (4) are formed in the circular plate (21).
  4. 4. A gear shaft carburizing and charging tool according to claim 3, wherein four hanging rings (26) are fixed on the upper surface of the circular plate (21).
  5. 5. The gear shaft carburizing and charging tool according to claim 1, wherein the gravity positioner (6) comprises a cylindrical balancing weight (62), a truncated cone (63) is fixed on the lower surface of the cylindrical balancing weight (62), the second pointed cone (61) is fixed on the lower end face of the truncated cone (63), two vertical plates (64) are axially symmetrically fixed on the peripheral side face of the cylindrical balancing weight (62), a sliding sleeve (65) in linear sliding fit with the guide cylindrical rod (4) is fixed on the vertical plates (64), and a jackscrew (66) is connected to the outer wall of the sliding sleeve (65) in a threaded penetrating mode.
  6. 6. The gear shaft carburizing and charging tool according to claim 3, wherein a first groove is formed in the upper end of the guide cylindrical rod (4), and a second groove is formed in the lower end of the positioning jack (25).

Description

Gear shaft carburizing and charging tool Technical Field The utility model belongs to the technical field of carburizing tools, and particularly relates to a gear shaft carburizing and charging tool. Background The gear shaft parts are the core transmission parts in the speed reducer and the transmission mechanism, are widely applied to various mechanical equipment, and have the main functions of supporting the transmission parts, transmitting torque and bearing load. The gear shaft is generally composed of a cylindrical surface, a shaft shoulder, threads, a screw tail tool retracting groove, a key groove, gears, shaft end center holes at two ends and the like. In order to obtain the required strength, toughness and wear resistance in the production and processing flow of the gear shaft, the gear shaft is also subjected to a series of heat treatment processes, wherein the heat treatment processes comprise key steps of quenching, tempering, carburizing, tempering and the like. The carburization treatment is an important heat treatment process, and the hardness and the wear resistance of the gear shaft are obviously improved by improving the carbon concentration on the surface of the gear shaft and further forming a carburized layer with a certain thickness. However, during the carburizing treatment of the gear shaft, the design of the charging tooling is critical. Traditional charging frock often is applicable to the installation of batch same specification gear shaft to the gear shaft design of same size specification type, and charging frock specificity is stronger. In addition, the traditional tooling design may require an additional clamp to adjust the position of the gear shaft, which is complex in operation, and easily generates clamping points on the periphery of the gear shaft, so that hot air flow is blocked in the area in the carburizing process, and the uniformity of a carburized layer is further affected. Therefore, a novel gear shaft carburizing and charging tool is needed to solve the problems of the existing tool and improve the carburization quality and the production efficiency of the gear shaft. Disclosure of utility model The utility model aims to provide a gear shaft carburizing and charging tool, which realizes quick and accurate clamping of a gear shaft by adopting a double-pointed-cone coaxial positioning structure and a gravity positioner self-weight sliding centering matched jackscrew locking function, and avoids uneven carburization caused by shielding of a clamp. In order to solve the technical problems, the utility model is realized by the following technical scheme: The utility model discloses a gear shaft carburizing and charging tool which comprises a mounting underframe, a mounting upper cover, eye bolts and gear shaft clamping assemblies, wherein the gear shaft clamping assemblies are mounted between the mounting underframe and the mounting upper cover and are coaxially and uniformly provided with a plurality of annular rings, each gear shaft clamping assembly comprises two guide cylindrical rods, a first pointed cone and a gravity positioner, each mounting underframe comprises a circular bottom plate, the two guide cylindrical rods and the first pointed cones are respectively and vertically mounted on the upper surface of each circular bottom plate, the two guide cylindrical rods are axially symmetrically arranged relative to the first pointed cone, the gravity positioners are vertically and slidably mounted on the two guide cylindrical rods, a second pointed cone is fixedly arranged at the center of the bottom of each gravity positioner, the second pointed cones and the first pointed cones in the same gear shaft clamping assembly are coaxially arranged, the mounting upper cover is mounted on the mounting underframe and a plurality of guide cylindrical rods in a plugging manner, and the eye bolts penetrate through the mounting upper cover and are fixedly connected with the mounting underframe in a threaded manner. According to the preferable technical scheme, the round bottom plate is provided with a plurality of vent holes, the center of the round bottom plate is fixedly provided with a cylindrical rod, the upper end of the cylindrical rod is provided with a rectangular slot, and the bottom surface of the rectangular slot is provided with a threaded blind hole in threaded connection with the eye bolt. According to the preferable technical scheme, the mounting upper cover comprises a circular plate, a cylindrical head is fixed at the center of the bottom surface of the circular plate, a rectangular plug matched with the rectangular slot is fixed at the lower end of the cylindrical head, circular through holes matched with the eye bolts are formed in the circular plate, the cylindrical head and the rectangular plug, and a plurality of positioning jacks matched with the guiding cylindrical rod are formed in the circular plate. As a preferable technical scheme of the utility mo