Thin sheet inner support chuck of precision automatic lathe

Abstract

The utility model relates to a precision automatic lathe sheet inner support chuck which comprises a claw disc and a pushing part pushing the claw disc to deform, a plurality of clamping claws are arranged at the end, away from the pushing part, of the claw disc in the circumferential direction, a gap is reserved between every two adjacent clamping claws, and a plurality of deformation grooves are formed in the end face, provided with the clamping claws, of the claw disc in the circumferential direction in a penetrating mode. The deformation grooves are formed between the adjacent clamping jaws and flush with the side walls of the clamping jaws, and the ends, close to the axis of the jaw disc, of the deformation grooves are communicated. By applying thrust to the claw disc and utilizing deformation of the claw disc, the clamping claws are adjusted to be far away from each other, so that the clamping claws tightly support the inner wall of a workpiece, the distance between the clamping claws is smaller, the smaller workpiece can be fastened, and meanwhile, the clamping device can also be applied to equipment with smaller operation space.

Description

Technical Field

[0001] The present application relates to the technical field of clamps, and in particular to a thin-sheet internal support clamp for a Swiss-type lathe. Background Art

[0002] Internal support chucks are commonly used in the machining industry. They support the inner hole of the workpiece, thereby defining the position of the workpiece and then processing the outer surface of the workpiece.

[0003] The internal support chuck is usually a through-type structure. The core rod installed in the lathe spindle passes through the column hole to open the four-part chuck so that the chuck is supported on the inner wall of the workpiece, thereby limiting the position of the workpiece.

[0004] However, since a core rod capable of reciprocating movement needs to be arranged inside the inner support chuck, the overall size is limited and cannot be reduced, and it is difficult to achieve inner support positioning when targeting a smaller workpiece.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to make the size of the fixture smaller and adapt to smaller workpieces or smaller processing spaces, the present application provides a thin-sheet internal support chuck for a Swiss-type lathe.

[0007] The present application provides a Swiss-type lathe internal support chuck, which adopts the following technical solution:

[0008] A thin-sheet internal support chuck of a Swiss-type lathe comprises a claw plate and a pushing member for pushing the claw plate to deform, a plurality of claws are circumferentially arranged at one end of the claw plate away from the pushing member, gaps are left between adjacent claws, a plurality of deformation grooves are circumferentially penetrated on the end surface of the claw plate where the claws are arranged, the deformation grooves are arranged between adjacent claws and flush with the side walls of the claws, and the deformation grooves are connected at one end close to the axis of the claw plate.

[0009] By adopting the above technical solution, a thrust is applied to the claw plate, and the deformation of the claw plate itself is utilized to move the claws away from each other, so that the claws can tighten the inner wall of the workpiece. The spacing between the claws is smaller, so that smaller workpieces can be tightened. At the same time, it can also be used on equipment with smaller operating space.

[0010] Optionally: the distance between the end of the deformation groove away from the claw disk axis and the claw disk axis is greater than the distance between the side wall of the claw away from the claw disk axis and the claw disk axis.

[0011] By adopting the above technical solution, the area of ​​the claw plate that can be deformed is increased, thereby reducing the deformation amplitude of each part of the claw plate, so that the claw plate can recover after deformation.

[0012] Optionally: the end surface of the claw disk on which the claw is provided also has a plurality of stabilizing grooves passing through it, the stabilizing grooves are arranged along the radial direction of the claw disk, one end of the stabilizing grooves is connected to the claw, the stabilizing grooves are arranged between adjacent deformation grooves, and the angles of the stabilizing grooves from two adjacent deformation grooves are equal.

[0013] By adopting the above technical solution, the side walls of the stabilizing groove can move away from each other when the claw plate is under force, thereby reducing the deformation amplitude of the claw plate and preventing the claw from moving too far away from one end of the claw plate.

[0014] Optionally, the deformation groove and the stabilization groove have an equal distance from the claw plate side wall at one end away from the claw plate axis.

[0015] By adopting the above technical solution, when the claw plate is deformed by force, the deformation amplitude of the claw plate on both sides of the stabilizing groove is increased, so that the moving distance of the clamping claw away from one end of the claw plate is not too large.

[0016] Optionally: a first stress hole is provided at one end of the stabilizing groove away from the axis of the claw disk, and a second stress hole is provided at one end of the deformation groove away from the axis of the claw disk.

[0017] By adopting the above technical solution, when the stabilizing groove and the deformation groove are deformed, the first stress hole and the second stress hole are deformed near the axis of the claw disk, while the positions away from the axis of the claw disk are not deformed, so that the claw disk is not easily torn.

[0018] Optionally: a mounting seat is coaxially arranged at one end of the claw plate away from the clamping claw, and a thread is arranged on the inner wall of the mounting seat.

[0019] By adopting the above technical solution, the claw plate can be directly installed on the secondary shaft or the main shaft by means of threads, making the installation and replacement of the claw plate more convenient.

[0020] Optionally: a stepped groove is coaxially arranged on the side wall of the clamping claw away from its axis, and the stepped groove penetrates the end surface of the clamping claw away from the claw disk.

[0021] By adopting the above technical solution, the position of the workpiece sleeved on the clamping claw is limited by the stepped groove, so that the clamping claw can stably limit the position of the workpiece after deformation.

[0022] Optionally: the pushing member includes a guide rod and a pushing rod arranged at the end of the guide rod, and the radius of the pushing rod is smaller than the distance between the side wall of the claw away from the claw disk axis and the claw disk axis.

[0023] By adopting the above technical solution, when the push rod abuts against the claw plate, the claw plate can be driven to deform, so that the clamping claw can normally limit the position of the workpiece.

[0024] Optionally, an oil passage coaxially penetrates the end surface of the pusher.

[0025] By adopting the above technical solution, after the jaws clamp the workpiece, the cooling oil can directly enter the interior of the workpiece, thereby eliminating the need to spray cooling oil from the outside.

[0026] Optionally: a plurality of guide grooves are provided on the outer wall of the guide rod.

[0027] By adopting the above technical solution, the pushing member can rotate synchronously with the main shaft or the secondary shaft when moving in the main shaft or the secondary shaft, so that it is not easy to wear between the pushing member and the claw plate.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The pusher applies force to the claw plate to drive the claw plate to deform, and the deformation of the claw plate drives the claw connected to the claw plate to deform, so that the claw can position the workpiece, and the pusher is no longer located between the claws, thereby reducing the distance between the claws and enabling the claws to position smaller workpieces;

[0030] 2. The claw disc can be directly threaded onto the secondary shaft or the main shaft through the mounting seat, making the installation of the claw disc more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram for illustrating the chuck structure according to an embodiment of the present application.

[0033] In the figure, 1, claw plate; 11, deformation groove; 12, stabilizing groove; 13, first stress hole; 14, second stress hole; 2, pushing member; 21, pushing rod; 22, guide rod; 23, oil channel; 24, guide groove; 3, claw; 31, step groove; 4, mounting seat; 41, positioning groove; 42, mounting groove. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application discloses a Swiss-type lathe inner support chuck, such as Figure 1 and Figure 2As shown, it includes a claw plate 1 and a pusher 2 for pushing the claw plate 1 to deform. The claw plate 1 is set in a disc shape, and three claws 3 are integrally formed on one end surface thereof, and gaps are left between the three claws 3. The claw plate 1 is also provided with three deformation grooves 11, which are arranged along the axis of the claw plate 1 and respectively arranged between the claws 3. The side wall of the deformation groove 11 is flush with the side wall of two adjacent claws 3, and the end of the deformation groove 11 close to the axis of the claw plate 1 is connected, and the distance from the end of the deformation groove 11 away from the axis of the claw plate 1 to the axis of the claw plate 1 is greater than the distance from the end of the claw 3 away from the axis of the claw plate 1 to the axis of the claw plate 1. The pusher 2 is arranged at the end of the claw plate 1 away from the claw 3, and the pusher 2 can abut against the end surface of the claw plate 1 away from the claw 3 and apply force to the claw plate 1. The position of the claw plate 1 where the claw 3 is arranged will drive the claw 3 to move in the direction away from the pusher 2 under the condition of force, thereby increasing the spacing between the claws 3 and realizing the expansion of the workpiece.

[0036] When the claw plate 1 is deformed by the force applied by the pusher 2, the deformation position is located on the claw plate 1, which causes the moving distances of the two ends of the claw 3 from the axis of the claw plate 1 to be different. Therefore, three stable grooves 12 are also passed through the surface of the claw plate 1. The stable grooves 12 are arranged between adjacent deformation grooves 11, and the angle between the stable grooves 12 and the deformation grooves 11 is set to thirty degrees. One end of the stable groove 12 is flush with the side wall of the claw 3 away from the axis of the claw plate 1, and the distance of the other end of the stable groove 12 from the axis of the claw plate 1 is equal to the distance of the deformation groove 11 away from the axis of the claw plate 1. Therefore, when the claw plate 1 is subjected to the thrust applied by the pusher 2, the two side walls of the stable groove 12 on the claw plate 1 will move away from each other, thereby shortening the moving distance of the claw 3 away from one end of the claw plate 1, so that the claw 3 is not easy to be lifted when moving.

[0037] Since the inner walls of the deformation groove 11 and the stabilizing groove 12 on the claw plate 1 will constantly change, after long-term deformation, the deformation groove 11 and the stabilizing groove 12 are prone to tearing at the end away from the axis of the claw plate 1. Therefore, a first stress hole 13 is provided at the end of the stabilizing groove 12 away from the axis of the claw plate 1, and a second stress hole 14 is provided at the end of the deformation groove 11 away from the axis of the claw plate 1. Both the first stress hole 13 and the second stress hole 14 penetrate the two end faces of the claw plate 1. When the deformation groove 11 and the stabilizing groove 12 are deformed, the first stress hole 13 and the second stress hole 14 will also be deformed, but the deformation only occurs on the side close to the axis of the claw plate 1, so that the claw plate 1 is not easy to tear.

[0038] The side wall of the clamping jaw 3 away from the axis of the claw plate 1 is arranged in an arc shape, and the axis of the arc of the clamping jaw 3 coincides with the axis of the claw plate 1. A step groove 31 is coaxially provided on the outer wall of the clamping jaw 3, and the step groove 31 penetrates the end face of the clamping jaw 3 away from the claw plate 1 and the side wall adjacent to the other clamping jaws 3, so that when the clamping jaw 3 is inserted into the workpiece, the step groove 31 is used to limit the depth of the clamping jaw 3 inserted into the workpiece, so that the subsequent deformation of the claw plate 1 is not easily affected.

[0039] A mounting seat 4 is coaxially arranged on the end face of the claw plate 1 away from the clamping claw 3. The mounting seat 4 is arranged in a circular ring shape. The axis of the mounting seat 4 coincides with the axis of the claw plate 1. A positioning groove 41 is coaxially provided on the end face of the mounting seat 4 close to the claw plate 1. One end of the claw plate 1 away from the clamping claw 3 is embedded in the positioning groove 41, and the claw plate 1 and the mounting seat 4 are fixed by screws. A mounting groove 42 is coaxially provided on the end of the mounting seat 4 away from the claw plate 1. A thread is coaxially arranged in the mounting groove 42, so that the mounting seat 4 can be threadedly connected to the main shaft or the secondary shaft of the Swiss machine, thereby making the connection and replacement of the claw plate 1 more convenient.

[0040] The push member 2 includes a guide rod 22 and a push rod 21 integrally formed at the end of the guide rod 22. The guide rod 22 is coaxially arranged with the push rod 21, and the guide rod 22 is coaxially arranged with the claw disc 1. The push member 2 is inserted into the main shaft or the secondary shaft, and is connected to the push rod inside the main shaft or the secondary shaft, so as to push the claw disc 1 to deform. The push rod 21 abuts against the end face of the claw disc 1 away from the claw 3. The radius of the push rod 21 is smaller than the distance between the side wall of the claw 3 away from the axis of the claw disc 1 and the axis of the claw disc 1, so that when the push rod 21 applies a thrust to the claw disc 1, the claw disc 1 can be deformed.

[0041] An oil passage 23 is coaxially provided on the push rod 21 and the guide rod 22. The oil passage 23 penetrates the ends of the push rod 21 and the guide rod 22 that are away from each other. The oil passage 23 on the guide rod 22 can be connected to the oil pipe on the Swiss machine, so that cooling oil can flow from the oil passage 23 to the workpiece during workpiece processing.

[0042] In order to prevent the pushing member 2 from rotating during the movement, two guide grooves 24 are provided on the outer wall of the guide rod 22. The two guide grooves 24 are parallel to each other and are arranged at positions where the side walls of the guide rod 22 are away from each other. The guide groove 24 penetrates the end surface of the guide rod 22 away from the claw plate 1, so that when the guide rod 22 is inserted into the main shaft or the secondary shaft, the guide groove 24 can abut against the inner wall of the main shaft or the secondary shaft to limit the movement of the guide rod 22.

[0043] The implementation principle of this embodiment is: the workpiece is sleeved on the claw 3 and located in the stepped groove 31, and then the pushing member 2 pushes the claw plate 1 toward the claw 3, so that the side walls of the deformation groove 11 and the stabilizing groove 12 are separated from each other, and the claws 3 are separated from each other and abut against the inner wall of the workpiece, thereby realizing the positioning of the workpiece.

[0044] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A Swiss-type lathe inner support chuck, characterized in that: The invention comprises a claw plate (1) and a pushing member (2) for pushing the claw plate (1) to deform, wherein a plurality of claws (3) are circumferentially arranged at one end of the claw plate (1) away from the pushing member (2), and gaps are left between adjacent claws (3); a plurality of deformation grooves (11) are circumferentially penetrated on the end surface of the claw plate (1) provided with the claws (3); the deformation grooves (11) are arranged between adjacent claws (3) and are flush with the side walls of the claws (3); and the deformation grooves (11) are connected at one end close to the axis of the claw plate (1).

2. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: The distance between the end of the deformation groove (11) away from the axis of the claw disc (1) and the axis of the claw disc (1) is greater than the distance between the side wall of the clamping claw (3) away from the axis of the claw disc (1) and the axis of the claw disc (1).

3. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: The claw plate (1) is provided with a plurality of stabilizing grooves (12) on the end surface of the claw plate (1), on which the claw (3) is provided. The stabilizing grooves (12) are arranged along the radial direction of the claw plate (1), one end of the stabilizing groove (12) is connected to the claw (3), and the stabilizing groove (12) is arranged between adjacent deformation grooves (11). The angles of the stabilizing grooves (12) from two adjacent deformation grooves (11) are equal.

4. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 3, characterized in that: The ends of the deformation groove (11) and the stabilizing groove (12) that are away from the axis of the claw plate (1) are at equal distances from the side wall of the claw plate (1).

5. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 4, characterized in that: A first stress hole (13) is provided at one end of the stabilizing groove (12) away from the axis of the claw plate (1), and a second stress hole (14) is provided at one end of the deforming groove (11) away from the axis of the claw plate (1).

6. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: A mounting seat (4) is coaxially arranged at one end of the claw plate (1) away from the clamping claw (3), and a thread is arranged on the inner wall of the mounting seat (4).

7. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: A stepped groove (31) is coaxially arranged on the side wall of the clamping claw (3) away from the axis thereof, and the stepped groove (31) penetrates the end surface of the clamping claw (3) away from the claw plate (1).

8. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: The pushing member (2) comprises a guide rod (22) and a pushing rod (21) arranged at the end of the guide rod (22), and the radius of the pushing rod (21) is smaller than the distance between the side wall of the claw (3) away from the axis of the claw plate (1) and the axis of the claw plate (1).

9. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 1, characterized in that: An oil passage (23) coaxially penetrates the end surface of the pushing member (2).

10. The thin-sheet internal support chuck of a Swiss-type lathe according to claim 8, characterized in that: A plurality of guide grooves (24) are arranged on the outer wall of the guide rod (22).

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