Rotary clamping tool

Abstract

The utility model discloses a rotary clamping tool, which relates to the technical field of lathe fixtures and comprises a turntable, a limit frame and a lifting sliding seat, the turntable is in coaxial transmission connection with a lathe spindle, the limit frame is mounted at the end of the turntable, the head end of the lifting sliding seat is coaxially and fixedly connected with a tray, and the tray is used for mounting shaft workpieces. The tail end of the lifting sliding seat is arranged in a plurality of spiral sliding grooves in a sliding mode, the spiral sliding grooves are evenly arranged around the axis of the lifting sliding seat, the spiral sliding grooves are in an arc shape so that supporting legs of the lifting sliding seat can slide along the spiral sliding grooves, and on the basis, spiral lead angles are arranged at the bottoms of the spiral sliding grooves. The machine tool drives the rotating disc to rotate, under the inertia effect, the lifting sliding base is screwed by a certain distance in the axis direction of the rotating disc and is matched with the limiting frame to abut against the end of a workpiece, and therefore the workpiece is fixed, and inner hole machining can be conveniently conducted on shaft parts.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe clamps, in particular to a rotary clamping tool. Background Art

[0002] Lathe processing of shaft parts generally requires fixing the inner or outer circle of the shaft. However, for some shaft parts with wider diameters, it is difficult to fix the side of the part with a chuck, and positioning can only be achieved by clamping the two ends of the part with tooling.

[0003] At present, the commonly used method is to tighten multiple fasteners on the tooling through thread clamping, and use the pre-tightening force generated by the fasteners to fix them. This method is relatively mature in mechanical processing technology, but the problem is also obvious. Every time a new blank is replaced, the tooling needs to be disassembled and assembled, and the corresponding fasteners also need to be retightened, which leads to a lot of man-hours wasted.

[0004] In order to improve the convenience of using the tooling, the applicant proposed a new technical solution, which uses the tooling to convert the torque generated by the high-speed rotation of the workpiece into a portion of the axial force to clamp the two ends of the workpiece to achieve the point position of the workpiece. Utility Model Content

[0005] To this end, the utility model provides a rotary clamping fixture to solve the problem in the prior art that the fixture uses multiple fasteners, which causes inconvenience in assembling and disassembling the workpiece.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a rotary clamping tool, comprising:

[0008] A turntable, with a limit frame installed at the end, the limit frame is suitable for abutting against the end of the workpiece;

[0009] A lifting slide, the head end of which is coaxially fixedly connected to the tray and the tail end of which is slidably arranged in a spiral slide groove, wherein the spiral slide grooves are in a certain number and are evenly arranged around the axis of the lifting slide;

[0010] Wherein, a helical angle is arranged at the bottom of the spiral slide, and the turntable is coaxially connected to the machine tool. When the turntable rotates, the bottom of the lifting slide is suitable for sliding along the direction of the helical angle.

[0011] Furthermore, the lifting slide comprises:

[0012] The seat body has a top end coaxially fixed with the tray and a bottom end provided with no less than three supporting feet;

[0013] The end of any one of the supporting legs is provided with an inclined surface, and the inclined surface is suitable for being slidably connected with the bottom of the spiral slide groove and sliding along the direction of the spiral rise angle.

[0014] Furthermore, the tray comprises:

[0015] A disc body, the back side of which is coaxially fixedly connected to the base body, and the front side is used for mounting a workpiece;

[0016] The pull rod has a head end connected to the disc body and a tail end connected to the limit block.

[0017] Furthermore, the turntable includes a rotating member, a rotating shaft, a center limiting hole and a mounting hole;

[0018] A rotating shaft is arranged at the center of the rotating member, a central limiting hole is arranged at the axis of the rotating shaft, and a limiting block is slidably arranged in the central limiting hole;

[0019] The end surface of the rotating member is provided with at least three mounting holes.

[0020] Furthermore, the limit frame includes a pressure plate, a nylon pad and a connecting rod. The connecting rod is arranged parallel and side by side on the pressure plate. A nylon pad is arranged at the center of the pressure plate. The nylon pad is suitable for abutting against the end of the workpiece. The end of the connecting rod is screwed and fixed to the mounting hole.

[0021] Furthermore, three fastening bolts are evenly arranged on the outer side of the disk body.

[0022] The utility model has the following advantages:

[0023] The utility model discloses a rotary clamping fixture, which mainly utilizes three spiral grooves arranged on the circumference of a turntable, and cooperates with a lifting slide seat and the spiral grooves. When the turntable rotates, under the action of torque, the lifting slide seat slides along the spiral grooves, so that it generates thrust in the axial position, thereby pushing the lifting slide seat and the limit frame to automatically abut against the two ends of the fixed workpiece. Compared with the prior art method of fixing the workpiece on the fixture by fasteners, the problem of inconvenience in disassembling and assembling the workpiece caused by the time-consuming disassembly and assembly of the fasteners in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 An exploded perspective view of the rotary clamping tooling provided by the utility model;

[0027] Figure 2 A three-dimensional diagram of the limit frame provided by the utility model;

[0028] Figure 3 A three-dimensional diagram of the turntable provided by the utility model;

[0029] Figure 4 A three-dimensional diagram of a tray provided by the utility model;

[0030] Figure 5 A three-dimensional diagram of the fastening bolt provided by the utility model;

[0031] Figure 6 A three-dimensional diagram of the lifting slide provided by the utility model;

[0032] Figure 7 A schematic diagram of the use of the rotary clamping tool provided by the utility model;

[0033] In the figure: 1 turntable; 11 rotating member; 12 rotating shaft; 13 center limit hole; 2 limit frame; 21 pressure plate; 22 nylon pad; 23 connecting rod; 3 lifting slide; 31 seat body; 32 support foot; 33 inclined plane; 4 spiral slide; 5 tray; 51 plate body; 52 limit block; 53 pull rod; 6 fastening bolt. DETAILED DESCRIPTION

[0034] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Please refer to Figure 1-Figure 7The utility model discloses a rotary clamping tool, comprising a turntable 1, a limit frame 2 and a lifting slide 3, wherein the turntable 1 is coaxially connected to the main shaft of the lathe, so that the machine tool drives it to rotate at high speed. The limit frame 2 is installed at the end of the turntable 1, and when the turntable 1 rotates, the lifting slide 3 can rotate a distance along the axis direction of the turntable 1, so as to cooperate with the limit frame 2 to abut the two ends of the workpiece, thereby fixing the workpiece, so as to perform inner hole processing on shaft parts.

[0036] Specifically, Figure 1 In the present embodiment, the head end of the lifting slide 3 is coaxially fixedly connected with the tray 5, and the tray 5 is used to install shaft-type workpieces. The tail end of the lifting slide 3 is slidably arranged in a plurality of spiral slide grooves 4, wherein the plurality of spiral slide grooves 4 are evenly arranged around the axis of the lifting slide 3, and the spiral slide grooves are in an arc shape, so that the support legs 32 of the lifting slide 3 can slide along the spiral slide grooves. At the same time, on this basis, a spiral angle is set at the bottom of the spiral slide groove 4. When the turntable 1 rotates, the support legs 32 of the lifting slide 3 will first rotate in the direction of the spiral angle, and at the same time, the seat body 31 will move along the axis to cooperate with the limit frame 2 to fix the two ends of the workpiece.

[0037] In this embodiment, if Figure 6 The lifting slide 3 includes a seat body 31 and a support leg 32, wherein the top of the seat body 31 is coaxially fixed with the tray 5, and at least three support legs 32 are arranged at the bottom of the seat body 31, and the ends of the support legs 32 are provided with an inclined surface 33 that cooperates with the spiral slide groove 4, and the inclined surface 33 slides along the bottom of the spiral slide groove 4 and slides along the direction of the spiral rise angle, such as Figure 7 When the machine tool is started, the support legs 32 can support the seat body 31 forward to press against the workpiece, thereby converting the torque of the tooling itself into an axial force to fix the workpiece so that the tool rod can perform processing.

[0038] In this embodiment, if Figure 4 The tray 5 includes a tray body 51, a stopper 52 and a pull rod 53. The back side of the tray body 51 is coaxially fixedly connected to the base body 31, so that the base body 31 can push the workpiece through the tray body 51. The head end of the pull rod 53 is connected to the tray body 51, and the tail end of the pull rod 53 is connected to the stopper 52. The stopper 52 is located in the central stopper hole 13 and can only slide in the central stopper hole 13. Thus, the central stopper hole 13 is used to guide and limit the support leg 32 and prevent the spiral slide 4 from separating.

[0039] In some embodiments, Figure 3The turntable 1 includes a rotating member 11, a rotating shaft 12, a center limiting hole 13 and a mounting hole 14. At least three mounting holes 14 are arranged on the end surface of the rotating member 11, and a rotating shaft 12 is arranged at the center of the rotating member 11. A center limiting hole 13 is arranged at the axis of the rotating shaft 12, and a limiting block 52 is slidably arranged in the center limiting hole 13.

[0040] In some embodiments, Figure 2 The limit frame 2 includes a pressure plate 21, a nylon pad 22 and a connecting rod 23. The connecting rod 23 is arranged parallel to and in parallel on the pressure plate 21. A nylon pad 22 is arranged at the center of the pressure plate 21. The nylon pad 22 is suitable for abutting against the end of the workpiece. The end of the connecting rod 23 is screwed and fixed on the mounting hole 14. The nylon pad 22 has a low hardness and good surface roughness, which can prevent the workpiece from slipping. In addition, based on this embodiment, as Figure 7 Three fastening bolts 6 are evenly arranged on the outside of the disc body 51. By tightening the fastening bolts 6 to clamp the workpiece, the connection strength between the workpiece and the disc body 51 can be further improved, thereby improving the stability of the workpiece rotation.

[0041] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A rotary clamping tool, characterized in that: include: A turntable (1) has a limit frame (2) installed at the end thereof, wherein the limit frame (2) is suitable for abutting against the end of a workpiece; A lifting slide (3), the head end of which is coaxially fixedly connected to the tray (5) and the tail end of which is slidably arranged in a spiral slide groove (4), wherein the spiral slide grooves (4) are provided in a plurality of numbers and are evenly arranged around the axis of the lifting slide (3); The bottom of the spiral slide groove (4) is provided with a helical angle, the turntable (1) is coaxially connected to the machine tool, and when the turntable (1) rotates, the bottom of the lifting slide seat (3) is suitable for sliding along the direction of the helical angle.

2. The rotary clamping fixture according to claim 1, characterized in that: The lifting slide (3) comprises: A seat body (31) having a top end coaxially fixed with the tray (5) and a bottom end provided with no less than three supporting legs (32); The end of any one of the legs (32) is provided with an inclined surface (33), and the inclined surface (33) is suitable for being slidably connected with the bottom of the spiral slide groove (4) and sliding along the direction of the spiral rise angle.

3. The rotary clamping fixture according to claim 2, characterized in that: The tray (5) comprises: A disc body (51), the back side of which is coaxially fixedly connected to the base body (31), and the front side is used for mounting a workpiece; The pull rod (53) has a head end connected to the disk body (51), and a tail end connected to the limit block (52).

4. The rotary clamping fixture according to claim 3, characterized in that: It comprises a rotating member (11), a rotating shaft (12), a central limiting hole (13) and a mounting hole (14); A rotating shaft (12) is arranged at the center of the rotating member (11), a central limiting hole (13) is arranged at the axis of the rotating shaft (12), and a limiting block (52) is slidably arranged in the central limiting hole (13); The end surface of the rotating member (11) is provided with at least three mounting holes (14).

5. The rotary clamping fixture according to claim 4, characterized in that: The limiting frame (2) comprises a pressure plate (21), a nylon pad (22) and a connecting rod (23); the connecting rod (23) is arranged in parallel and in parallel on the pressure plate (21); a nylon pad (22) is arranged at the center of the pressure plate (21); the nylon pad (22) is suitable for abutting against the end of the workpiece; the end of the connecting rod (23) is screwed and fixed on the mounting hole (14).

6. The rotary clamping fixture according to claim 3, characterized in that: Three fastening bolts (6) are evenly arranged on the outer side of the disk body (51).

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