Positioning and clamping tool for mechanical gear machining

Abstract

The utility model discloses a locating and clamping tool for mechanical gear machining, and relates to the technical field of gear machining, the locating and clamping tool for mechanical gear machining comprises a sliding clamping sleeve and an inner hole expander, the sliding clamping sleeve is placed on the outer side of the inner hole expander, and the bottom of the inner hole expander is connected with a cavity base in a sliding mode. A driving disc for controlling the opening and closing of the inner hole expander is also arranged in the cavity base; the inner hole expander comprises conical seats which are arranged in an annular array mode. According to the gear center hole positioning device, the three conical seats arranged in the annular array mode expand outwards at the same time, the conical seats drive the connecting stand columns to move in the gear center hole so as to position the gear center hole, meanwhile, the inclined faces between the sliding clamping sleeves and the conical seats can push the sliding clamping sleeves to move upwards, and therefore the gear center hole can be positioned. The gear is axially positioned in cooperation with the trapezoidal clamping jaw clamped to the edge of the center hole of the gear, and multi-direction positioning of the gear can be achieved through one-time positioning.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining technical field, specifically positioning and clamping frock for mechanical gear machining. BACKGROUND

[0002] Gear machining positioning and clamping frock is important device for fixing and positioning gear in gear machining process to ensure machining precision and stability, and generally utilizes three jaw chuck to clamping positioning gear, and three jaw chuck is clamped through extrusion to gear outer ring.

[0003] However, in practice, it has been noticed that the current positioning and clamping structure can only clamp the single direction of gear, for example, three jaw chuck cannot position the axial position of gear, and gear will move along the axial direction after being stressed, which affects the positioning effect.

[0004] When fixing the inner ring of gear, positioning rod is generally used, gear is sleeved on the positioning rod, and finally the positioning ring is screwed on the positioning rod, and when positioning and clamping the gear, the positioning ring on the shaft needs to be manually removed, which leads to low positioning efficiency, and the diameter of the positioning rod needs to be less than the diameter of the center hole of the gear, so that the gear is prone to shifting during machining, which affects the machining quality. UTILITY MODEL CONTENTS

[0005] The utility model discloses a positioning and clamping frock for mechanical gear machining, which positions and clamps the center hole of the gear through the connection column and trapezoidal claw arranged in an annular array, and the inclined arrangement of the contact surface between the conical seat and the sliding clamping sleeve enables the conical seat to push the sliding clamping sleeve to move upward when the conical seat moves, and the trapezoidal claw axially positions the gear.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A positioning and clamping frock for mechanical gear machining includes a sliding clamping sleeve and an inner hole expander, the sliding clamping sleeve is placed outside the inner hole expander, the bottom of the inner hole expander is slidably connected with a cavity base, and the cavity base is also provided with a driving disc for controlling the opening and closing of the inner hole expander.

[0008] The inner hole expander includes conical seats arranged in an annular array, each conical seat is integrally provided with a connection column and a trapezoidal claw at the end, and the bottom of the conical seat is also integrally provided with a sliding block and a connecting column.

[0009] As a further technical scheme of the utility model, the inner side of the sliding clamping sleeve is conically arranged, the conical seat is arranged on the inner side of the sliding clamping sleeve, and the outer side of the conical seat is attached to the inner side of the sliding clamping sleeve.

[0010] As a further technical scheme of the utility model, the end of the connecting column penetrates the sliding clamping sleeve, and the trapezoidal clamping jaw is located on the side of the connecting column away from the conical seat.

[0011] As a further technical scheme of the utility model, the top of the cavity base is respectively provided with a sliding groove and a sliding hole arranged in a rectangular array, and the sliding block and the connecting column are respectively slidingly connected in the sliding groove and the sliding hole.

[0012] As a further technical scheme of the utility model, the cavity base is further provided with a mounting column, the outer side of the mounting column is movably connected with a driving disc, and the driving disc is located in the cavity base.

[0013] As a further technical scheme of the utility model, the driving disc comprises a rotating disc rotatably connected to the outer side of the mounting column, the bottom of the rotating disc is fixed with a conical gear ring, and the other side of the rotating disc is annularly arranged with an arc-shaped groove.

[0014] As a further technical scheme of the utility model, the bottom of the cavity base is integrally provided with a fixed frame, the side surface of the fixed frame is fixedly connected with a servo motor, and the end of the servo motor is drivingly connected with a driving bevel gear.

[0015] As a further technical scheme of the utility model, the end of the servo motor penetrates the cavity base and extends to the inner side of the cavity base, the driving bevel gear is located on one side of the bottom of the conical gear ring, and the driving bevel gear and the conical gear ring are meshed with each other.

[0016] As a further technical scheme of the utility model, the end of the connecting column penetrates the sliding hole and extends to the middle of the arc-shaped groove, and the connecting column is slidingly connected with the arc-shaped groove.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The three conical seats arranged in an annular array simultaneously expand outward, the conical seat drives the connecting column to move in the gear center hole, positions the gear center hole, at the same time, the inclined surface between the sliding clamping sleeve and the conical seat pushes the sliding clamping sleeve to move upward, cooperates with the trapezoidal clamping jaw clamped at the edge position of the gear center hole, axially positions the gear, one positioning can realize multi-direction positioning of the gear, and the positioning and clamping effect of the gear is improved.

[0019] 2. In this utility model, when the conical seat moves, the slider and the connecting column slide in the groove and the sliding hole respectively, thereby limiting the movement position of the conical seat;

[0020] 3. In this utility model, the servo motor drives the rotating disk to rotate through the meshing between the active bevel gear and the bevel gear ring. When the rotating disk rotates, it pushes the connecting column to slide through the bevel gear ring, thereby ensuring that the conical seats arranged in a ring array expand outward at the same time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0022] Figure 2 This utility model Figure 1 A schematic diagram of the bottom structure.

[0023] Figure 3 This is the front view of the sliding clamping sleeve in this utility model.

[0024] Figure 4 This utility model Figure 3 AA sectional view.

[0025] Figure 5 This is a three-dimensional structural diagram of the internal hole expander in this utility model.

[0026] Figure 6 This utility model Figure 5 A schematic diagram of the bottom structure.

[0027] Figure 7 This is a left view of the hollow cavity base of this utility model.

[0028] Figure 8 This utility model Figure 7 A schematic diagram of the bottom structure.

[0029] Figure 9 This is a three-dimensional structural diagram of the drive disk in this utility model.

[0030] Figure 10 This utility model Figure 9 A schematic diagram of the bottom structure.

[0031] In the picture:

[0032] Cavity base-1, slide groove-11, sliding hole-12, mounting post-13, fixed frame-2, servo motor-3, sliding clamping sleeve-4, inner hole expander-5, conical seat-51, connecting column-52, trapezoidal claw-53, slider-54, connecting post-55, drive disk-6, rotating disk-61, bearing hole-62, conical gear ring-63, arc groove-64, driving bevel gear-7. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model.

[0034] Please refer to Figures 1-10 The utility model embodiment provides a kind of positioning and clamping tool for mechanical gear machining, including sliding clamping sleeve 4 and inner hole expander 5, sliding clamping sleeve 4 is placed in the outside of inner hole expander 5, and the bottom of inner hole expander 5 is slidably connected with cavity base 1, cavity base 1 is also equipped with the driving disc 6 of control inner hole expander 5 opening and closing;

[0035] The inner hole expander 5 includes the conical seat 51 of annular array, each conical seat 51 is integrally provided with connecting column 52 and trapezoidal dog 53 at end, and the bottom of conical seat 51 is also integrally provided with sliding block 54 and connecting column 55.

[0036] In the embodiment, the inside of sliding clamping sleeve 4 is conical, and the inclination angle is the same as that of conical seat 51, the conical seat 51 is arranged on the inside of sliding clamping sleeve 4, and the outside of conical seat 51 is attached to the inside of sliding clamping sleeve 4, when multiple conical seats 51 move outward, the inclination of the contact position will push sliding clamping sleeve 4 to move upward.

[0037] In the embodiment, the end of connecting column 52 penetrates sliding clamping sleeve 4, and trapezoidal dog 53 is located on the side of connecting column 52 away from conical seat 51, to position and clamp the central hole of gear.

[0038] In the embodiment, the top of cavity base 1 is respectively provided with sliding slot 11 and sliding hole 12 arranged in rectangular array, and sliding block 54 and connecting column 55 are respectively slidably connected in sliding slot 11 and sliding hole 12.

[0039] In the embodiment, the cavity base 1 is also provided with mounting column 13, the outside of mounting column 13 is movably connected with driving disc 6, and driving disc 6 is located in cavity base 1.

[0040] In the embodiment, the driving disc 6 includes rotating disc 61 connected to the outside of mounting column 13, conical gear ring 63 is fixed to the bottom of rotating disc 61, and arc-shaped groove 64 is arranged in annular array on the other side of rotating disc 61.

[0041] Further, the bottom of the cavity base 1 is integrally provided with a fixed frame 2, the side surface of the fixed frame 2 is fixedly connected with a servo motor 3, and the end of the servo motor 3 is drivingly connected with a driving bevel gear 7.

[0042] In the embodiment, the end of the servo motor 3 penetrates through the cavity base 1 and extends to the inner side of the cavity base 1, the driving bevel gear 7 is located at the bottom side of the conical gear ring 63, and the driving bevel gear 7 and the conical gear ring 63 are in meshing engagement.

[0043] In the embodiment, the end of the connecting column 55 penetrates through the sliding hole 12 and extends to the middle of the arc-shaped groove 64, and the connecting column 55 is in sliding connection with the arc-shaped groove 64.

[0044] By adopting the above technical scheme, the gear is placed on the top of the sliding clamping sleeve 4, the connecting column 52 and the trapezoidal clamping jaw 53 penetrate through the inner ring of the gear respectively, the servo motor 3 drives the rotating disc 61 to slowly rotate through the meshing engagement between the driving bevel gear 7 and the conical gear ring 63, since the arc-shaped groove 64 is arc-shaped, the rotating disc 61 rotates to push the connecting column 55 to slide on the inner side of the arc-shaped groove 64, the connecting column 55 drives the sliding block 54 to slide on the inner side of the sliding groove 11, thereby driving the three conical seats 51 arranged in an annular array to move outward, so that the connecting column 52 is attached to the inner ring of the gear, at the same time, the inclined surface of the conical seat 51 and the inclined surface on the inner side of the sliding clamping sleeve 4 are in cooperation, the conical seat 51 moves to push the sliding clamping sleeve 4 to move upward, the trapezoidal clamping jaw 53 is clamped at the edge position of the central hole of the gear, and the sliding clamping sleeve 4 and the trapezoidal clamping jaw 53 cooperate to clamp the gear again, thereby ensuring the axial position of the gear.

[0045] In the embodiment, the central position of the rotating disc 61 is provided with a bearing hole 62, the inner side of the bearing hole 62 is in interference fit with a bearing, and the inner ring of the bearing is in interference fit on the outer side of the mounting column 13.

[0046] In the embodiment, the conical seat 51 is in sliding connection in an annular array on the top of the cavity base 1.

[0047] In the embodiment, the bottom side of the cavity base 1 is provided with an opening, and the end of the servo motor 3 is located in the opening.

[0048] In the embodiment, the fixed frame 2 is integrally provided with a horizontal plate at the position provided on the side surface of the cavity base 1, and the servo motor 3 is fixed on the horizontal plate through bolts.

[0049] Specifically, the end of the connecting column 55 is connected with a limiting ring, and the limiting ring is located between the sliding hole 12 and the rotating disc 61 to limit the conical seat 51 and prevent the conical seat 51 from falling off the top of the cavity base 1.

[0050] The working principle of the utility model is: when using, first, the bottom of cavity base 1 is fixed on the workbench of gear processing equipment through fixed frame 2, then the gear is placed on sliding clamping sleeve 4, and the center hole of the gear is sleeved on the outside of connecting column 52, trapezoidal clamping jaw 53 is located above the center hole of the gear, servo motor 3 drives driving bevel gear 7 to rotate, through the meshing between driving bevel gear 7 and bevel gear ring 63, rotating disc 61 is driven to rotate slowly, because the arc-shaped recess 64 is arranged as an arc, when rotating disc 61 rotates, it will push connecting column 55 to slide on the inside of arc-shaped recess 64, connecting column 55 drives sliding block 54 to slide on the inside of sliding groove 11, so as to drive the three bevel-shaped seats 51 arranged in annular array to move outward, so that connecting column 52 gradually fits in the inner circle of the gear, when bevel-shaped seat 51 moves, the inclined surface of bevel-shaped seat 51 and the inclined surface on the inside of sliding clamping sleeve 4 cooperate with each other, sliding clamping sleeve 4 is pushed to move upward, trapezoidal clamping jaw 53 is clamped on the edge position of the center hole of the gear, sliding clamping sleeve 4 and trapezoidal clamping jaw 53 cooperate, and the gear is clamped again, so as to ensure the axial position and axial position of the gear; simple structure, very convenient operation, and effectively reduce the labor intensity.

[0051] It is obvious to a person skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0052] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A positioning and clamping jig for machining of a mechanical gear, characterized by: It includes a sliding clamping sleeve (4) and an inner hole expander (5). The sliding clamping sleeve (4) is placed on the outside of the inner hole expander (5), and the bottom of the inner hole expander (5) is slidably connected to a cavity base (1). The cavity base (1) is also provided with a drive disk (6) for controlling the opening and closing of the inner hole expander (5). The internal expansion device (5) includes conical seats (51) arranged in a ring array. Each conical seat (51) has an integrally provided connecting column (52) and trapezoidal claw (53) at its end. The bottom of the conical seat (51) also has an integrally provided slider (54) and connecting column (55).

2. The positioning and clamping tool for machining of mechanical gears according to claim 1, characterized in that: The inner side of the sliding clamping sleeve (4) is tapered, and the tapered seat (51) is disposed on the inner side of the sliding clamping sleeve (4), and the outer side of the tapered seat (51) is in contact with the inner side of the sliding clamping sleeve (4).

3. The positioning and clamping tool for machining of mechanical gears according to claim 1, characterized in that: The end of the connecting column (52) passes through the sliding clamping sleeve (4), and the trapezoidal claw (53) is located on the side of the connecting column (52) away from the conical seat (51).

4. The positioning and clamping tool for machining of mechanical gears according to claim 3, characterized in that: The top of the cavity base (1) is provided with a sliding groove (11) and a sliding hole (12) arranged in a rectangular array. The slider (54) and the connecting column (55) are slidably connected in the sliding groove (11) and the sliding hole (12) respectively.

5. The positioning and clamping tool for machining of mechanical gears according to claim 1, characterized in that: The cavity base (1) is also provided with a mounting post (13), and a drive disk (6) is movably connected to the outside of the mounting post (13), and the drive disk (6) is located in the cavity base (1).

6. The positioning and clamping tool for machining of mechanical gears according to claim 1, characterized in that: The drive disk (6) includes a rotating disk (61) that is axially connected to the outside of the mounting post (13). A conical toothed ring (63) is fixed at the bottom of the rotating disk (61), and an arc-shaped groove (64) is provided on the other side of the rotating disk (61) in a ring array.

7. The positioning and clamping tool for machining of mechanical gears according to claim 1, characterized in that: The bottom of the cavity base (1) is integrally provided with a fixed frame (2), and a servo motor (3) is fixedly connected to the side of the fixed frame (2), and the end of the servo motor (3) is connected to an active bevel gear (7).

8. The positioning and clamping tool for machining of mechanical gears according to claim 7, characterized in that: The end of the servo motor (3) passes through the cavity base (1) and extends to the inner side of the cavity base (1). The active bevel gear (7) is located on the bottom side of the conical gear ring (63), and the active bevel gear (7) and the conical gear ring (63) mesh with each other.

9. The positioning and clamping tool for machining of mechanical gears according to claim 6, characterized in that: The end of the connecting post (55) extends through the sliding hole (12) into the center of the arc-shaped groove (64), and the connecting post (55) is slidably connected to the arc-shaped groove (64).

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