Positioning mechanism of wire cutting machine for gear machining

Abstract

The utility model relates to the technical field of gear machining, and discloses a wire cutting machine positioning mechanism for gear machining, which comprises a clamp table, an upper pressing plate is detachably mounted on the clamp table, a fixing shaft and a supporting plate are further mounted on the clamp table, and a driving mechanism is arranged between the fixing shaft and the supporting plate. According to the gear blank cutting device, the supporting plate can be driven to move by controlling rotation of the rotating ring, positioning of a gear blank is completed, meanwhile, the upper pressing plate presses the gear blank from the top and fixes the gear blank, and the gear blank is prevented from jumping in the cutting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear processing field especially relates to a wire cutting machine positioning mechanism for gear processing. BACKGROUND

[0002] Wire cutting is a kind of metal processing mode based on electric spark processing principle, is melted and vaporized metal in essence. Wire cutting processing can realize higher dimensional accuracy. For gear processing, its machining accuracy can reach ±0.01mm or even higher. And wire cutting also has the advantages such as being able to easily cope with various complex tooth shape, material adaptability is wide, machining allowance is small.

[0003] When wire cutting machine processes gear, generally, the gear to be processed (hereinafter referred to as tooth blank) is processed into annular structure with hole in the middle, and then motor wire cutting gear tooth is utilized. Before cutting, the tooth blank needs to be positioned and fixed first. Based on this, the applicant proposes a wire cutting machine positioning mechanism for gear processing. SUMMARY

[0004] To solve the technical problem of tooth blank positioning in the process of wire cutting gear processing, the utility model provides a wire cutting machine positioning mechanism for gear processing.

[0005] The utility model adopts the following technical scheme to realize: a wire cutting machine positioning mechanism for gear processing, including clamp table, be provided with on the clamp table:

[0006] Upper pressing plate, the upper pressing plate can be detachably installed on the clamp table;

[0007] Fixed shaft, the fixed shaft is fixedly connected on the clamp table;

[0008] Supporting plate, the supporting plate is slidably arranged on the clamp table;

[0009] Driving mechanism, the fixed shaft and supporting plate are provided with driving mechanism, and the driving mechanism is used to drive the supporting plate to move on the clamp table.

[0010] Through the above technical scheme, first, the tooth blank is placed on the clamp table, and the center hole of the tooth blank is sleeved outside the supporting plate. Through the cooperation of the driving mechanism, the supporting plate is controlled to move, and the tooth blank is fixed by the simultaneous outside expansion movement of the plurality of supporting plates. At the same time, the upper pressing plate is installed, so that the tooth blank can be centered clamped, and wire cutting is facilitated.

[0011] As a further improvement of the above scheme, the clamp table is fixedly connected with a fixed seat, and the upper pressing plate is detachably installed on the fixed seat through the captive screw.

[0012] As a further improvement of the above scheme, the fixture table is provided with a limiting sliding groove, and a sliding block is slidably arranged in the limiting sliding groove.

[0013] As a further improvement of the above scheme, the lower end of the fixed shaft is fixedly connected with the fixture table, and an outer thread is formed in the upper half of the fixed shaft.

[0014] As a further improvement of the above scheme, the driving mechanism comprises:

[0015] A rotating ring is internally provided with an inner thread, and is threadedly connected with the fixed shaft; and an installation groove is formed in the outer side of the rotating ring.

[0016] A lifting cylinder is rotatably connected with the installation groove of the rotating ring through a bearing at the upper end, and is sleeved on the outer side of the fixed shaft.

[0017] An inclined supporting rod is rotatably connected with the outer side wall of the lifting cylinder at one end and rotatably connected with the supporting plate at the other end.

[0018] According to the above technical scheme, when the rotating ring moves up and down, the lifting cylinder moves up and down together, but when the rotating ring rotates, the lifting cylinder is not affected.

[0019] As a further improvement of the above scheme, a control hole is formed in the outer side wall of the rotating ring, and a lever is arranged in a matched mode, and one end of the lever can be inserted into the control hole.

[0020] As a further improvement of the above scheme, a through hole is formed in the fixed shaft, and a through hole is formed in the corresponding position of the fixture table.

[0021] According to the above technical scheme, before wire cutting processing, the positioning of the electrode wire is a key step to ensure the processing precision. The through holes are formed in the corresponding positions of the fixed shaft and the fixture table, so that the electrode wire can be positioned by the spark method.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] The utility model discloses a rotating ring is controlled to rotate, can drive supporting plate removal, completes the positioning of tooth blank, and the upper pressing plate is pressed from the top and holds tooth blank, and tooth blank is fixed, prevents the jumping of tooth blank in the cutting process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is whole structure schematic diagram of the utility model;

[0025] Figure 2 It is partial structure enlarged schematic diagram of the utility model;

[0026] Figure 3 Figure 2 is a schematic view of the positional relationship between the fixed shaft and the rotating ring of the utility model;

[0027] Figure 4 Figure 4 is a schematic view of the connecting relationship between the lifting cylinder and the support plate of the utility model.

[0028] Main symbol explanation: 1, clamp table; 2, fixed seat; 3, upper pressing plate; 4, limiting sliding groove; 5, sliding block; 6, support plate; 7, fixed shaft; 8, driving mechanism; 81, rotating ring; 82, mounting groove; 83, lifting cylinder; 84, inclined support rod; 9, control hole; 10, lever. DETAILED DESCRIPTION

[0029] In the following, the utility model is further described in combination with the drawings and the specific implementation, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0030] Please combine Figures 1-4 The positioning mechanism of the wire cutting machine for gear machining in the embodiment comprises a clamp table 1, one end of the clamp table 1 is fixedly installed in the wire cutting machine. The clamp table 1 mainly undertakes the positioning and fixing work of the gear blank.

[0031] Firstly, the fixed seat 2 is fixedly connected on the clamp table 1, and a fixed screw is arranged in a matched mode. The upper pressing plate 3 is detachably installed on the fixed seat 2 through the fixed screw. The upper pressing plate 3 can be disassembled and installed by rotating the fixed screw. In actual use, the gear blank is placed on the clamp table 1, and then the upper pressing plate 3 is installed. That is, the upper pressing plate 3 presses the gear blank from above.

[0032] Four limiting sliding grooves 4 are further formed on the clamp table 1, and the sliding block 5 is slidably installed in the limiting sliding groove 4. In addition, the support plate 6 is further arranged, and the top of the sliding block 5 and the support plate 6 are fixedly connected.

[0033] The fixed shaft 7 is fixedly connected on the clamp table 1 and located in the middle of the four limiting sliding grooves 4. The lower end of the fixed shaft 7 is fixedly connected with the clamp table 1, and the upper half is provided with a thread. The driving mechanism 8 is arranged between the fixed shaft 7 and the support plate 6, and the driving mechanism 8 is used for controlling the reciprocating movement of the support plate 6 along the direction of the limiting sliding groove 4.

[0034] Specific, drive mechanism 8 includes rotating ring 81, lifting cylinder 83 and inclined support rod 84. Wherein rotating ring 81 is entirely set in the outer side of fixed shaft 7, and the inner thread is opened in rotating ring 81, and is threadedly connected between fixed shaft 7. In addition, the mounting groove 82 is opened on the outer side wall of the rotating ring 81. Lifting cylinder 83 is entirely set in the outer side of the fixed shaft 7, and the upper end of the lifting cylinder 83 is rotatably installed in the mounting groove 82. That is, when the rotating ring 81 moves up and down, the lifting cylinder 83 will move up and down together. In addition, one end of the inclined support rod 84 is rotatably connected to the outer side wall of the lifting cylinder 83, and the other end is rotatably connected to the inner side wall of the support plate 6.

[0035] If the rotating ring 81 rotates, it will move downward along the fixed shaft 7 under the cooperation of the thread. At this time, the lifting cylinder 83 will also move downward. The inclined support rod 84 gradually changes from a vertical state to an inclined state and pushes the support plate 6 to move along the direction of the limiting sliding groove 4.

[0036] In order to facilitate the rotation of the rotating ring 81, a control hole 9 is opened on the outer side wall of the rotating ring 81, and a corresponding control rod 10 is provided, wherein one end of the control rod 10 can be inserted into the control hole 9. The rotation of the rotating ring 81 is driven by the control rod 10. After the rotating ring 81 is rotated, the control rod 10 is pulled out.

[0037] In addition, in the wire cutting process, the positioning of the electrode wire is a key step to ensure the processing accuracy. Therefore, a through hole is opened in the middle of the fixed shaft 7, and a through hole is also opened in the corresponding position of the clamp table 1. If the electrode wire is positioned by using the spark method, the electrode wire needs to pass through the fixed shaft 7 and the clamp table 1.

[0038] The implementation process and principle of the positioning mechanism of the wire cutting machine for gear machining in the embodiment of the application are as follows:

[0039] (I): Place the blank on the clamp table 1, so that the support plate 6 passes through the hole in the middle of the blank.

[0040] (II): Insert the control rod 10 into the control hole 9 on the rotating ring 81, manually control the rotating ring 81 to start rotating, and under the cooperation of the thread, the rotating ring 81 moves downward while rotating, and drives the lifting cylinder 83 to move downward. In the process of moving downward, the lifting cylinder 83 will push the support plate 6 to move along the limiting sliding groove 4 on the clamp table 1 through the inclined support rod 84. Until the four support plates 6 provided in the embodiment simultaneously contact the inner circle of the blank. The four support plates 6 simultaneously support the blank from the inside, and complete the centering and fixing of the blank.

[0041] (III): Install the upper pressing plate 3 on the fixed seat 2, and press the blank from the top with the upper pressing plate 3 to fix the blank, so as to prevent the blank from jumping during cutting.

[0042] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A wire cutting machine positioning mechanism for gear machining, characterized by, Including the clamp table, be provided with on the clamp table: The upper pressing plate is detachably mounted on the clamp table; The fixed shaft is fixedly connected on the clamp table; The support plate is slidably provided on the clamp table; Drive mechanism, the fixed shaft and support plate are provided with drive mechanism, and the drive mechanism is used for driving support plate to move on the clamp table.

2. The wire saw positioning mechanism for gear machining as claimed in claim 1, wherein, The fixed seat is fixedly connected on the clamp table, and the upper pressing plate is detachably mounted on the fixed seat by the captive screw.

3. The wire saw positioning mechanism for gear machining as claimed in claim 1, wherein, The limiting sliding groove is formed on the clamp table, the sliding block is slidably installed in the limiting sliding groove, and the top of the sliding block is fixedly connected with the support plate.

4. The wire saw positioning mechanism for gear machining as claimed in claim 1, wherein, The lower end of the fixed shaft is fixedly connected with the clamp table, and the upper half of the fixed shaft is provided with external threads.

5. The wire saw positioning mechanism for gear machining as claimed in claim 4, wherein The drive mechanism comprises: The rotating ring is internally provided with internal threads, and the rotating ring is threadedly connected with the fixed shaft, and the outer side of the rotating ring is provided with a mounting groove; The upper end of the lifting cylinder is rotatably connected with the mounting groove of the rotating ring through a bearing, and the lifting cylinder is sleeved on the outer side of the fixed shaft; The oblique support rod is rotatably connected with the outer side wall of the lifting cylinder at one end and rotatably connected with the support plate at the other end.

6. The wire saw positioning mechanism for gear machining as claimed in claim 5, wherein The outer side wall of the rotating ring is provided with a control hole, and a corresponding control hole is provided with a control hole.

7. The wire saw positioning mechanism for gear machining as claimed in claim 1, wherein The fixed shaft is provided with a through hole in the middle, and the clamp table is provided with a through hole at the corresponding position.

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