Integral spline machining device

Abstract

The utility model provides an integral type spline machining device which comprises a spline shaft and a machine tool, the spline shaft is fixedly installed on the machine tool, the integral type spline machining device further comprises a forming assembly and a machining assembly, the forming assembly comprises an electrode tip and a movable part, the electrode tip is installed at one end of the movable part, the movable part can move in the length direction of the spline shaft, and the electrode tip is used for machining the spline shaft to form a spline; a first connecting rod is arranged at the other end of the movable part and connected with a power source on the machine tool so as to provide machining current for the electrode tip. The supporting piece is installed on the machine tool and used for supporting the movable piece so that the movable piece can be prevented from falling when moving in the length direction of the spline shaft. The electrode tip can move in the length direction of the spline shaft and stretch into the spline shaft to machine the spline shaft. The supporting piece is arranged on the machine tool to support the movable piece, and the movable piece is prevented from falling during machining of the spline shaft. The device can machine the spline shaft at a time to form the internal spline, so that the overall strength of the spline shaft is ensured, and the service life of the spline shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of machining of mechanical parts, and particularly relates to an integral spline machining device. Background Art

[0002] In the field of mechanical transmission, spline connection, as an important connection method, is widely used for the axial fixation and torque transmission of gears on shafts. The spline connection realizes relatively uniform load transmission by machining uniformly distributed convex teeth and grooves on the shaft and the gear, thereby improving the strength and stiffness of the connection. Due to its extremely high requirements for machining accuracy, traditional machining methods have many deficiencies, and the machining of incomplete through internal splines is difficult. For incomplete through internal spline parts with a length ranging from more than 800 mm to 2000 mm, the traditional method of segmental machining and then welding is generally adopted, which cannot guarantee the service life of the parts in a complex working environment. At the same time, the welding connection method is difficult to ensure the coaxiality of each segment, and the machining difficulty is great. Summary of the Utility Model

[0003] One of the purposes of the present invention is to provide an integral spline machining device, which can complete the machining of internal splines at one time, so as to solve the problem that the service life of the spline shaft is not long due to segmental welding in the machining of existing internal splines.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An integral spline machining device includes a spline shaft and a machine tool. The spline shaft is fixedly installed on the machine tool, and further includes: a forming assembly, including an electrode head and a movable member. The electrode head is installed at one end of the movable member, and the movable member can move in the length direction of the spline shaft and extend into the spline shaft to drive the electrode head to machine the spline shaft; a first connecting rod is arranged at the other end of the movable member, and the first connecting rod is connected to the machine tool so as to drive the movable member to move in the length direction in which the spline shaft starts when the machine tool is started; a support member is installed on the machine tool and is used to support the movable member to prevent the movable member from dropping when moving along the length direction of the spline shaft.

[0006] The movable member and the electrode head of the utility model are installed on the machine tool through the first connecting rod. When the machine tool is started, the movable member and the electrode head can move along the length direction of the spline shaft to machine the inside of the spline shaft. At the same time, a support member is arranged on the machine tool to support the movable member, so that the movable member will not drop when driving the electrode head to machine the spline shaft. The device of the utility model can machine the spline shaft to form internal splines at one time to ensure the overall strength of the spline shaft and increase the service life of the spline shaft.

[0007] Further, the support member includes a support body and a first sliding bearing. The first sliding bearing is installed on the support body, and the movable member is installed in the first sliding bearing, so that the movable member can slide on the support member along the length direction of the spline shaft.

[0008] By the above technical means, the first sliding bearing is provided on the support member, which can provide stable support for the movable member and accurate guidance for the movable member to machine the spline shaft.

[0009] Further, a positioning member is also provided on the movable member. The positioning member is installed at one end of the spline shaft to prevent the spline shaft from falling off the movable member during machining.

[0010] By the above technical means, the stability of the spline shaft during the machining process is ensured.

[0011] Further, the positioning member includes a positioning body and a second sliding bearing. The second sliding bearing is installed on the positioning body, and the movable member is installed in the second sliding bearing, so that the movable member can move on the positioning member along the length direction of the spline shaft.

[0012] By the above technical means, the second sliding bearing provides accurate guidance for the movement of the movable member on the positioning member.

[0013] Further, a first connecting member is also provided on the positioning body. The spline shaft includes a positioning end and a second connecting member. The second connecting member is provided on the positioning end. The first connecting member is adapted to the second connecting member to fixedly install the positioning member on the positioning end.

[0014] By the above technical means, the first connecting member and the second connecting member cooperate with each other, so that the spline shaft and the positioning member can be tightly connected.

[0015] Further, the positioning member is a positioning ring, and the positioning ring is coaxial with the spline shaft.

[0016] By the above technical means, the coaxiality between the positioning member and the spline shaft is ensured, and the machining error caused by non - coaxiality is reduced.

[0017] Further, the movable member is a movable rod. The movable rod passes through the support member and the positioning member and can move in the length direction of the spline shaft.

[0018] By the above technical means, the movable rod can extend into the interior of the spline shaft, so that the electrode head can machine the deep interior of the spline shaft.

[0019] Further, the spline shaft includes a shaft body and a plurality of spline teeth, and the plurality of spline teeth are evenly distributed inside the shaft body.

[0020] By the above technical means, the spline shaft has strong torque transmission performance.

[0021] Further, key grooves are formed on the shaft body, and the key grooves are coaxial with the shaft body. The plurality of spline teeth are arranged in the key grooves and are evenly distributed on the side walls of the key grooves.

[0022] By the above technical means, a non-penetrating internal spline is formed on the spline shaft.

[0023] Further, the coaxiality requirement between the key groove and the shaft body is Φ0.05 mm.

[0024] By the above technical means, the high coaxiality requirement enables the spline shaft to have high transmission accuracy.

[0025] The beneficial effects of the present utility model are as follows:

[0026] In the present utility model, the movable part and the electrode head are installed on the machine tool through the first connecting rod and can move along the length direction of the spline shaft to process the spline shaft. At the same time, a support part is arranged on the machine tool to support the movable part, so that the movable part will not drop when driving the electrode head to process the spline shaft. The device of the present utility model can process the spline shaft to form an internal spline at one time, ensuring the service life of the spline shaft. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only partial embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is the overall structural schematic diagram of the processing device of the present utility model;

[0029] Figure 2 is the side view structural schematic diagram of the support part of the present utility model;

[0030] Figure 3 is the side view structural schematic diagram of the positioning part of the present utility model;

[0031] Figure 4 is the cross-sectional structural schematic diagram of the spline shaft of the present utility model;

[0032] Figure 5 It is a schematic structural diagram of the positioning end of the spline shaft of the present utility model.

[0033] Wherein:

[0034] 100, spline shaft; 110, key shaft body; 120, positioning end; 130, second connecting member; 140, key teeth; 150, keyway; 210, electrode head; 220, movable member; 230, first connecting rod; 240, second connecting rod; 300, support member; 310, support body; 320, first sliding bearing; 400, positioning member; 410, positioning body; 420, second sliding bearing; 430, first connecting member. Specific embodiments

[0035] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. The accompanying drawings are only for illustrative purposes and should not be construed as a limitation to the present utility model. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0036] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0037] This embodiment provides an integral spline processing device as shown in Figures 1 to 5 which includes a spline shaft 100 and a machine tool. The spline shaft 100 is fixedly installed on the machine tool, and further includes: a forming assembly, including an electrode head 210 and a movable member 220. The electrode head 210 is installed at one end of the movable member 220, and the movable member 220 can move in the length direction of the spline shaft 100 and extend into the spline shaft 100 to drive the electrode head 210 to process the spline shaft 100; a first connecting rod 230 is provided at the other end of the movable member 220, and the first connecting rod 230 is connected to the machine tool so as to drive the movable member 220 to move in the length direction of the spline shaft 100 when the machine tool is started; a support member 300 is installed on the machine tool to support the movable member 220 to prevent the movable member 220 from dropping when moving in the length direction of the spline shaft 100.

[0038] When internal splines need to be machined, the spline shaft 100 is fixed on the machine tool. The machine tool is started, so that the first connecting rod 230 can drive the movable part 220 to move in the length direction of the spline shaft 100. At the same time, the electrode head 210 installed at one end of the movable part 220 moves in the length direction of the spline shaft 100 to machine the spline shaft 100. The support member 300 supports the movable part 220, so that the movable part 220 will not drop during the movement. It is worth mentioning that the movable part 220 always moves in the same straight line when machining the spline shaft 100.

[0039] The movable part 220 and the electrode head 210 of the present utility model are installed on the machine tool through the first connecting rod 230. When the machine tool is started, the movable part 220 and the electrode head 210 can move along the length direction of the spline shaft 100 to machine the inside of the spline shaft 100. At the same time, a support member 300 is arranged on the machine tool to support the movable part 220, so that the movable part 220 will not be misaligned when driving the electrode head 210 to machine the spline shaft 100. The device of the present utility model can machine the spline shaft 100 to form internal splines at one time, so as to ensure the overall strength of the spline shaft 100 and increase the service life of the spline shaft 100.

[0040] Preferably, the machine tool in this embodiment is an electric discharge machine tool. One end of the first connecting rod 230 is connected to the movable part 220, and the other end is connected to one of the electrodes of the pulse power supply of the electric discharge machine tool. During machining, the spline shaft 100 is connected to the other electrode of the pulse power supply of the electric discharge machine tool and immersed in the working fluid for discharge machining. The working fluid makes the current released by the electric discharge machine tool concentrate on a local position, and the current can be used to precisely machine the spline shaft 100.

[0041] Preferably, the movable part 220 in this embodiment is a movable rod.

[0042] As Figure 1 shown in Figure 2 In this embodiment, the support member 300 includes a support body 310 and a first sliding bearing 320. The first sliding bearing 320 is installed on the support body 310, and the movable part 220 is installed in the first sliding bearing 320, so that the movable part 220 can slide along the length direction of the spline shaft 100 on the support member 300. The first sliding bearing 320 is arranged on the support member 300, which can provide stable support for the movable part 220 and precise guidance for the movable part 220 to machine the spline shaft 100 at the same time.

[0043] Preferably, as Figure 1 shown in

[0044] In other embodiments, the support member 300 may be a structure of other shapes and having a supporting function. For example, the support member 300 is a supporting vertical rod provided with a first sliding bearing 320.

[0045] In this embodiment, a positioning member 400 is further provided on the movable member 220. The positioning member 400 is installed at one end of the spline shaft 100 to prevent the spline shaft 100 from falling off the movable member 220 during processing, so that the positioning member 400 can ensure the stability of the spline shaft 100 during the processing.

[0046] Preferably, a fixture is fixedly installed on the machine tool. The fixture is used to clamp the spline shaft 100 so that the spline shaft 100 can be fixed relative to the machine tool during processing.

[0047] In other embodiments, the positioning member 400 may also be fixedly installed on the fixture.

[0048] As Figure 3 shown, in this embodiment, the positioning member 400 includes a positioning body 410 and a second sliding bearing 420. The second sliding bearing 420 is installed on the positioning body 410, and the movable member 220 is installed in the second sliding bearing 420 so that the movable member 220 can move along the length direction of the spline shaft 100 on the positioning member 400. The second sliding bearing 420 provides precise guidance for the movement of the movable member 220 on the positioning member 400.

[0049] As Figures 3 to 5 shown, in this embodiment, a first connecting member 430 is further provided on the positioning body 410. The spline shaft 100 includes a positioning end 120 and a second connecting member 130. The second connecting member 130 is provided on the positioning end 120. The first connecting member 430 is adapted to the second connecting member 130 to fixedly install the positioning member 400 on the positioning end 120. The first connecting member 430 and the second connecting member 130 cooperate with each other so that the spline shaft 100 and the positioning member 400 can be firmly connected.

[0050] Preferably, the first connecting member 430 and the second connecting member 130 are respectively a first pin hole and a second pin hole. After the positions of the first pin holes and the second pin holes correspond to each other one by one, the positioning member 400 is fixedly installed on the positioning end 120 by using fastening screws.

[0051] In other embodiments, the first connecting members 430 and the second connecting members 130 may also be a cooperation of a bayonet and a clamping block.

[0052] As Figure 1 With Figure 3 shown, in this embodiment, the positioning member 400 is a positioning ring, and the positioning ring is coaxial with the spline shaft 100. It can ensure the coaxiality between the positioning member 400 and the spline shaft 100 and reduce the processing error caused by non-coaxiality.

[0053] In other embodiments, the positioning member 400 can also be in the shape of a square, rectangle, triangle, etc., as long as it is ensured that the second sliding bearing 420 is coaxial with the spline shaft 100.

[0054] In this embodiment, the movable member is the 220 movable rod. The movable rod passes through the support member 300 and the positioning member 400 and can move in the length direction of the spline shaft 100. The movable rod and the electrode head 210 can extend into the interior of the spline shaft 100, enabling the electrode head 210 to machine the deep interior of the spline shaft 100 and complete the machining of the non-penetrating internal spline at one time.

[0055] In this embodiment, the forming assembly further includes a second connecting rod 240. The electrode head 210 is detachably mounted on the movable member 220 through the second connecting rod 240. Mounting the electrode head 210 detachably on the movable member 220 can facilitate the maintenance and replacement of the electrode head 210.

[0056] In other embodiments, the electrode head 210 can be integrally formed with the movable member 220.

[0057] As Figure 4 shown, in this embodiment, the spline shaft 100 includes a shaft body 110 and a plurality of key teeth 140. The plurality of key teeth 140 are evenly distributed inside the shaft body 110, making the spline shaft 100 have strong torque transmission performance.

[0058] As Figure 5 shown, in this embodiment, a keyway 150 is formed on the shaft body 110, and the keyway 150 is coaxial with the shaft body 110. The plurality of key teeth 140 are arranged in the keyway 150 and evenly distributed on the side wall of the keyway 150, enabling the spline shaft 100 to form a non-penetrating internal spline.

[0059] In this embodiment, the coaxiality requirement between the keyway 150 and the shaft body 110 is Φ0.05mm. The relatively high coaxiality requirement makes the spline shaft 100 have a high transmission accuracy.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An integrated spline processing device, comprising a spline shaft (100) and a machine tool, wherein the machine tool is used to process the spline shaft (100), characterized in that: Also includes: A molding assembly comprises an electrode head (210) and a movable part (220), wherein the electrode head (210) is mounted on one end of the movable part (220), and the movable part (220) is capable of moving in the length direction of the spline shaft (100) and extending into the spline shaft (100) to drive the electrode head (210) to process the spline shaft (100); a first connecting rod (230) is provided at the other end of the movable part (220), and the first connecting rod (230) is connected to the machine tool to drive the movable part (220) to move in the length direction of the spline shaft (100) when the machine tool is started; A support member (300) is installed on the machine tool and is used to support the movable member (220) to prevent the movable member (220) from falling when moving along the length direction of the spline shaft (100).

2. An integrated spline processing device according to claim 1, characterized in that: The support member (300) comprises a support body (310) and a first sliding bearing (320), wherein the first sliding bearing (320) is mounted on the support body (310), and the movable member (220) is arranged in the first sliding bearing (320) so that the movable member (220) can slide on the support member (300) along the length direction of the spline shaft (100).

3. The integrated spline processing device according to claim 1, characterized in that: The movable part (220) is also provided with a positioning part (400), and the positioning part (400) is installed on one end of the spline shaft (100) to prevent the spline shaft (100) from falling off the movable part (220) during processing.

4. The integrated spline processing device according to claim 3, characterized in that: The positioning member (400) comprises a positioning body (410) and a second sliding bearing (420), wherein the second sliding bearing (420) is mounted on the positioning body (410), and the movable member (220) is mounted in the second sliding bearing (420), so that the movable member (220) can move on the positioning member (400) along the length direction of the spline shaft (100).

5. The integrated spline processing device according to claim 4, characterized in that: A plurality of first connecting members (430) are also provided on the positioning body (410), and the spline shaft (100) includes a positioning end (120) and a plurality of second connecting members (130), wherein the second connecting members (130) are provided on the positioning end (120), and the first connecting member (430) is adapted to the second connecting member (130) so as to fix the positioning member (400) on the positioning end (120).

6. The integrated spline processing device according to claim 3, characterized in that: The positioning member (400) is a positioning ring, and the positioning ring is coaxial with the spline shaft (100).

7. The integrated spline processing device according to claim 3, characterized in that: The movable member (220) is a movable rod, which passes through the support member (300) and the positioning member (400) and is capable of moving in the length direction of the spline shaft (100).

8. The integrated spline processing device according to claim 1, characterized in that: The spline shaft (100) comprises a spline shaft body (110) and a plurality of spline teeth (140), wherein the plurality of spline teeth (140) are evenly distributed inside the spline shaft body (110).

9. The integrated spline processing device according to claim 8, characterized in that: A keyway (150) is formed on the key shaft body (110), and the keyway (150) is coaxial with the key shaft body (110). A plurality of key teeth (140) are disposed in the keyway (150) and are evenly arranged on the side wall of the keyway (150).

10. An integrated spline processing device according to claim 9, characterized in that: The coaxiality requirement between the keyway (150) and the key shaft body (110) is Φ0.05 mm.

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