Gear clamping device and gear quenching apparatus

Abstract

The utility model belongs to gear processing technical field discloses a kind of gear clamping device and gear quenching equipment.The gear clamping device includes carrier and pressure assembly, carrier is used to be threaded in the shaft hole of gear;The both ends of carrier are respectively connected with pressure assembly, multiple gears formed to be processed gear group are sleeved on carrier, pressure assembly is used to abut on the end surface of to be processed gear group.The gear clamping device can be clamped and fixed to multiple stacked gears, so that multiple gears on carrier are stacked and pressed to form to be processed gear group, compared with single gear, to be processed gear group increases the thickness of gear, so the stroke of inductive head along tooth width is increased, thereby greatly improving the condition that tooth surface hardening layer depth is not uniform when tooth by tooth quenching, greatly improve the processing quality of gear.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a gear clamping device and a gear quenching equipment. Background Technology

[0002] Gear quenching is an important process in gear manufacturing. Its purpose is to change the internal structure of the metal through heating and rapid cooling, thereby improving the gear's hardness, wear resistance, and chemical properties. Currently, the two commonly used gear quenching methods are ring-type quenching and tooth-by-tooth quenching. Among them, tooth-by-tooth quenching uses an induction head inserted into the tooth grooves between the teeth to heat the tooth surface through electromagnetic induction, thus completing the quenching process. Due to its advantages such as fast heating speed and controllable hardened layer depth, it is widely used in the gear manufacturing industry.

[0003] However, for small module gears, due to their smaller tooth width, the induction head can easily cause uneven hardening of the gear along the thickness direction when quenching each tooth individually, thus affecting the processing quality of the gear. Utility Model Content

[0004] The purpose of this invention is to provide a gear clamping device and a gear quenching equipment, which can improve the uneven depth of the hardened layer on the tooth surface during tooth-by-tooth quenching, thereby improving the processing quality of the gear.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Gear clamping device, including:

[0007] A mounting carrier extends along a first direction and is used to pass through the shaft hole of a gear. Multiple gears are sleeved on the mounting carrier to form a gear set to be processed, and the tooth grooves of the multiple gears are aligned.

[0008] A pressing component is provided, wherein the mounting carrier is connected to both ends of the pressing component along the first direction, and the pressing component is used to abut against the end face of the gear set to be processed.

[0009] Preferably, the pressing component includes a retaining ring and a connector. Both ends of the loading body have connecting end faces. The retaining ring is detachably connected to the connecting end faces through the connector. The retaining ring is used to abut against the end face of the gear set to be processed.

[0010] Preferably, the connectors are provided in multiple portions at intervals along the circumference of the retaining ring.

[0011] Preferably, the retaining ring includes a connecting part and an abutting part that are fixedly connected. The connecting part is connected to the connecting end face, and the abutting part abuts against the end face of the gear along the axial direction of the gear.

[0012] Preferably, the diameter of the connecting part is less than or equal to the diameter of the loading body, the diameter of the abutting part is greater than the diameter of the loading body, and the connecting part, the abutting part, and the loading body are coaxially arranged.

[0013] Preferably, the connecting portion and the abutting portion are integrally formed.

[0014] Preferably, the carrier has a weight-reducing through hole.

[0015] Preferably, the retaining ring has a through mounting hole, which is positioned opposite the weight reduction through hole.

[0016] Preferably, the mounting carrier has an outer peripheral surface that abuts against the inner wall of the shaft hole of the gear.

[0017] The gear quenching equipment includes an induction head and the aforementioned gear clamping device. The induction head is movable along the tooth groove of the gear set to be processed and is used to heat the tooth surfaces on both sides of the tooth groove.

[0018] The beneficial effects of this utility model are as follows:

[0019] The gear clamping device provided by this utility model includes a mounting carrier and a pressing component. Since the mounting carrier is used to pass through the shaft hole of the gear, multiple gears can be sequentially mounted on the mounting carrier, thereby forming a stacked gear set to be processed on the mounting carrier. Since both ends of the mounting carrier are connected to the pressing component, the pressing component is used to abut against the end face of the gear set to be processed. Therefore, the pressing component can clamp and fix the gears from both sides of the gear set to be processed on the mounting carrier, thereby forming a stable clamping of the gear set to be processed. This gear clamping device can clamp and fix multiple stacked gears, thereby pressing multiple gears on the mounting carrier to form a gear set to be processed. Compared with a single gear, the gear set to be processed increases the thickness of the gears, thus increasing the travel of the induction head along the tooth width. This greatly improves the uneven hardening layer depth of the tooth surface during tooth-by-tooth quenching, and greatly improves the processing quality of the gears.

[0020] The gear quenching equipment provided by this utility model includes an induction head and the aforementioned gear clamping device. The induction head can move along the tooth groove of the gear set to be processed and heat the tooth surfaces on both sides of the tooth groove, thereby realizing tooth-by-tooth quenching of the gear. Multiple gears installed on the gear clamping device form a gear set to be processed, which increases the thickness of the gear and extends the tooth width stroke of the induction head for quenching, improves the uniformity of the hardened layer depth formed during the quenching process, and thus improves the processing quality of the gear. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of a gear clamping device equipped with gears according to a specific embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the gear clamping device provided in a specific embodiment of this utility model;

[0023] Figure 3 This is an exploded view of the gear clamping device provided in a specific embodiment of this utility model;

[0024] Figure 4 This is a cross-sectional view of the gear clamping device provided in the embodiment of this utility model.

[0025] In the picture:

[0026] 100-Gear;

[0027] 1-Carrier mounting; 11-Connecting end face; 12-Weight reduction through hole;

[0028] 2-Pressure assembly; 21-Retaining ring; 211-Connecting part; 212-Abutting part; 213-Assembly hole; 22-Connecting piece. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] like Figures 1 to 3 As shown, this utility model provides a gear clamping device, which includes a mounting carrier 1 and a pressing component 2. The mounting carrier 1 extends along a first direction and is used to pass through the shaft hole of a gear 100. Multiple gears 100 are sleeved on the mounting carrier 1 to form a gear set to be processed, and the tooth grooves of the multiple gears 100 are aligned. The pressing component 2 is connected to both ends of the mounting carrier 1 along the first direction, and the pressing component 2 is used to abut against the end face of the gear set to be processed. In this embodiment, since the mounting carrier 1 is used to pass through the shaft hole of the gear 100, multiple gears 100 can be sequentially mounted on the mounting carrier 1, thereby forming a stacked gear set to be processed on the mounting carrier 1. Since both ends of the mounting carrier 1 are connected to the pressing components 2, which are used to abut against the end face of the gear set to be processed, the pressing components 2 can clamp and fix the gear 100 from both sides of the gear set to be processed on the mounting carrier 1, thereby forming a stable clamping of the gear set to be processed. This gear clamping device can clamp and fix multiple stacked gears 100, thereby pressing multiple gears 100 on the mounting carrier 1 to form a gear set to be processed. Compared with a single gear 100, the gear set to be processed increases the thickness of the gear 100, thus increasing the travel of the induction head along the tooth width, thereby greatly improving the uneven hardening layer depth of the tooth surface during tooth-by-tooth quenching and greatly improving the processing quality of the gear 100.

[0034] Specifically, the first direction is the length direction of the mounting carrier 1. The gear clamping device is used to clamp and fix multiple stacked gears 100. Before quenching the gears 100, the operator first stacks the gears 100 to be quenched on the mounting carrier 1 to form a gear set to be processed. The pressing components 2 are connected to both ends of the mounting carrier 1 so that the pressing components 2 clamp the gear set to be processed from both ends to prevent the gears 100 from shaking or deviating during the quenching process. It should be noted that the tooth grooves of each gear in the gear set to be processed need to be aligned along the axial direction to ensure that the induction head can move smoothly along the axial direction in the tooth grooves of each gear 100, thereby heating the tooth surface of each gear 100. In another embodiment, the operator can also place the unprocessed gear blanks on the mounting carrier 1, and after the pressing components 2 at both ends are used to fix each gear blank, the gear blanks are first machined to produce gear teeth, and then the induction head is used to quench each tooth one by one. This method can ensure that the tooth grooves of each gear 100 in the gear set to be processed are accurately aligned along the axial direction.

[0035] Induction hardening is a commonly used method for hardening gear 100 in this field. When using induction hardening to harden gear 100 tooth by tooth, an induction head needs to be moved along the axial direction of gear 100 in the tooth groove. When using this method to harden small module gear 100, because the tooth width of small module gear 100 is small, the induction head will heat the two ends along the tooth width direction for a long time when moving, thus causing uneven hardening layer depth of gear 100 along the thickness direction.

[0036] The specific structure of the pressing component 2 can be set according to the actual situation, as long as it can be detachably connected to the mounting carrier 1 and stably abut against the end face of the gear set to be processed; for example, such as Figures 2 to 4 As shown, the pressing component 2 includes a retaining ring 21 and a connector 22. Both ends of the mounting carrier 1 have connecting end faces 11. The retaining ring 21 is detachably connected to the connecting end face 11 through the connector 22. The retaining ring 21 is used to abut against the end face of the gear set to be processed. Specifically, the connector 22 is a bolt. The connecting end face 11 has a bolt hole, and the retaining ring 21 has a through hole. The connector 22 passes through the through hole of the retaining ring 21 and is screwed into the bolt hole of the connecting end face 11, thereby fixing the retaining ring 21 on the mounting carrier 1 to achieve pressing and fixing of the gear set to be processed.

[0037] To ensure the proper fixation of gear 100 in the gear set to be machined, such as Figure 2 and Figure 3 As shown, multiple connectors 22 are spaced apart along the circumference of the retaining ring 21, and the multiple connectors 22 are evenly arranged along the circumference of the retaining ring 21.

[0038] Specifically, such as Figure 3 and Figure 4As shown, the retaining ring 21 includes a connecting part 211 and an abutting part 212 that are fixedly connected. The connecting part 211 is connected to the connecting end face 11, and the abutting part 212 abuts against the end face of the gear 100 along the axial direction of the gear 100. In this embodiment, both the connecting part 211 and the abutting part 212 are annular structures. The outer diameter of the abutting part 212 is larger than the outer diameter of the connecting part 211. A through hole is provided on the connecting part 211, and the connecting member 22 passes through the through hole to fix the connecting part 211 to the connecting end face 11. The abutting part 212 abuts against the end face of the gear 100 at the end of the gear set to be processed.

[0039] like Figure 3 and Figure 4 As shown, the diameter of the connecting part 211 is less than or equal to the diameter of the mounting carrier 1, and the diameter of the abutting part 212 is greater than the diameter of the mounting carrier 1. The connecting part 211, the abutting part 212 and the mounting carrier 1 are coaxially arranged. Specifically, a stepped groove is formed between the connecting part 211 and the abutting part 212. The inner wall surface of a portion of the shaft hole of the gear set to be processed is in contact with the side wall surface of the stepped groove, and the end face of the gear set to be processed is in contact with the bottom surface of the stepped groove.

[0040] To improve the connection strength between the connecting part 211 and the abutting part 212, the connecting part 211 and the abutting part 212 are integrally formed.

[0041] like Figure 3 and Figure 4 As shown, the mounting carrier 1 has a weight-reducing through hole 12, which reduces the weight of the mounting carrier 1 and the amount of material used in its manufacture, thereby reducing the manufacturing cost of the gear clamping device and improving its practicality.

[0042] like Figure 3 and Figure 4 As shown, the retaining ring 21 has a through mounting hole 213, which is positioned opposite the weight reduction through hole 12, thereby forming an axial through channel in the gear clamping device. This reduces the weight of the gear clamping device and also facilitates the worker to fix the gear clamping device to other equipment through the channel, thus providing conditions for subsequent quenching and fixing.

[0043] like Figure 2 and Figure 3 As shown, the mounting carrier 1 has an outer peripheral surface that abuts against the inner wall of the shaft hole of the gear 100, thereby improving the stability of the gear 100 mounted on the mounting carrier 1. Specifically, the mounting carrier 1 is a cylindrical structure with a weight-reducing through hole 12 that runs through the axial direction. The outer diameter of the mounting carrier 1 matches the inner diameter of the shaft hole of the gear 100, so the gear 100 can be stably mounted on the mounting carrier 1.

[0044] This embodiment also provides a gear quenching device, which includes an induction head and the aforementioned gear clamping device. The induction head can move along the tooth groove of the gear set to be processed, and is used to heat the tooth surfaces on both sides of the tooth groove. In this embodiment, the induction head can move along the tooth groove of the gear set to be processed and heat the tooth surfaces on both sides of the tooth groove, thereby realizing tooth-by-tooth quenching of the gear 100. Multiple gears 100 mounted on the gear clamping device form a gear set to be processed, increasing the thickness of the gear 100, thereby extending the tooth width stroke of the quenching induction head, improving the uniformity of the hardened layer depth formed during the quenching process, and thus improving the processing quality of the gear 100.

[0045] Specifically, the induction head is a commonly used induction hardening device in this field. It uses the principle of electromagnetic induction to heat the surface of gear 100 at high temperature, thereby performing hardening treatment on gear 100. Its specific structure will not be described in detail here. When in use, the induction head needs to pass through the tooth groove between two adjacent teeth along the axial direction of gear 100, thereby completing the hardening of the tooth surfaces on both sides of a single tooth groove.

[0046] The specific operating method of this gear quenching equipment is roughly as follows:

[0047] First, the workers sequentially mount multiple gears 100 onto the mounting carrier 1 to form a gear set to be processed. During this process, the position of each gear 100 needs to be adjusted so that the tooth grooves of all gears 100 are aligned axially. Then, the workers connect retaining rings 21 to both ends of the mounting carrier 1 through connectors 22 and make the retaining rings 21 abut against the end faces of the gears 100 at both ends of the gear set to be processed, thereby completing the clamping of the gears 100.

[0048] Afterwards, the staff placed the gear clamping device vertically and moved the energized induction head vertically along the tooth groove of the gear 100 to heat the tooth surface on both sides of each tooth groove of the gear 100. After heating, the tooth surface was quickly cooled with cooling water to complete the quenching of the tooth surface in one tooth groove. Then, the other tooth grooves were quenched in the same way until all tooth grooves were quenched.

[0049] After quenching, the staff can process the two gears 100 at both ends of the gear set to be processed according to the actual quenching effect. If the hardened layer formed by the gears 100 at both ends after quenching is uneven and the quenching effect is poor, they can be recycled.

[0050] In another embodiment, the operator can also place the unprocessed gear blanks on the mounting carrier 1, and after the pressing components 2 at both ends are used to fix each gear blank, the gear blanks are first machined to produce gear teeth, and then the induction head is used to quench each tooth one by one. This method can ensure that the tooth grooves of each gear 100 in the gear set to be processed are accurately aligned along the axial direction.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gear clamping device, characterized in that, include: A mounting carrier (1) extends along a first direction. The mounting carrier (1) is used to pass through the shaft hole of the gear (100). A plurality of gears (100) are sleeved on the mounting carrier (1) to form a gear set to be processed. The tooth grooves of the plurality of gears (100) are aligned. The pressing component (2) is connected to both ends of the mounting carrier (1) along the first direction. The pressing component (2) is used to abut against the end face of the gear set to be processed.

2. The gear clamping device according to claim 1, characterized in that, The pressing component (2) includes a retaining ring (21) and a connector (22). Both ends of the mounting carrier (1) have connecting end faces (11). The retaining ring (21) is detachably connected to the connecting end face (11) through the connector (22). The retaining ring (21) is used to abut against the end face of the gear set to be processed.

3. The gear clamping device according to claim 2, characterized in that, The connector (22) is provided in multiple circumferentially spaced along the retaining ring (21).

4. The gear clamping device according to claim 2, characterized in that, The retaining ring (21) includes a connecting part (211) and an abutting part (212) that are fixedly connected. The connecting part (211) is connected to the connecting end face (11), and the abutting part (212) abuts against the end face of the gear (100) along the axial direction of the gear (100).

5. The gear clamping device according to claim 4, characterized in that, The diameter of the connecting part (211) is less than or equal to the diameter of the mounting carrier (1), the diameter of the abutting part (212) is greater than the diameter of the mounting carrier (1), and the connecting part (211), the abutting part (212) and the mounting carrier (1) are coaxially arranged.

6. The gear clamping device according to claim 4, characterized in that, The connecting part (211) and the abutting part (212) are integrally formed.

7. The gear clamping device according to claim 2, characterized in that, The carrier (1) has a weight-reducing through hole (12).

8. The gear clamping device according to claim 7, characterized in that, The retaining ring (21) has a through mounting hole (213) which is positioned opposite the weight reduction through hole (12).

9. The gear clamping device according to claim 1, characterized in that, The mounting carrier (1) has an outer peripheral surface that abuts against the inner wall of the shaft hole of the gear (100).

10. Gear quenching equipment, characterized in that, The device includes a sensing head and a gear clamping device as described in any one of claims 1-9, wherein the sensing head is movable along the tooth groove of the gear set to be processed, and the sensing head is used to heat the tooth surfaces on both sides of the tooth groove.

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