Multi-corner-angle workpiece clamping tool for lathe

Abstract

The utility model discloses a multi-corner-angle workpiece clamping tool for a lathe, and relates to the technical field of clamping tools. A center groove penetrating to the bottom is formed in the top of the body, a carrying table is fixedly connected between the inner walls of the center groove, the top of the carrying table extends to the position above the body, three rail grooves communicated with the interior of the center groove are formed in the outer side of the body at equal intervals, and sliding tables are slidably connected into the rail grooves. By arranging the pre-positioning assembly, pre-positioning can be carried out before a multi-corner-angle workpiece is completely positioned, at the moment, the workpiece is only bound by elastic force and still has a moving space, the vibration assembly is arranged in a matched mode, vibration can be synchronously generated in the process, and then the unstable clamping posture can be automatically adjusted under the posture. And at the moment, the workpiece can be in a more stable posture, so that the clamping stability of the multi-edge-angle workpiece by the chuck is improved, and actual application is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tools, in particular to a multi-angle workpiece clamping tool for a lathe. Background Art

[0002] Lathe clamping tooling is an important device on CNC lathes used to fix, clamp, position, support and cut workpieces. It mainly includes fixtures, tools and other auxiliary devices. These tools play a vital role in ensuring processing quality and improving production efficiency. Among them, the chuck is a more commonly used clamping tooling in existing lathes.

[0003] Multi-angle workpieces refer to workpieces with multiple edges or irregular shapes. These workpieces usually have complex geometric shapes due to design needs or functional requirements, which requires special handling and clamping methods during manufacturing and processing. Multi-angle workpieces may include protrusions, depressions, bevels, fillets, etc. of various shapes, making the overall shape of the workpiece irregular. These edges and irregular shapes may increase the difficulty of processing because traditional fixtures and processing methods may not be able to effectively adapt to these complex shapes.

[0004] In the prior art, there are significant problems when using a chuck to clamp multi-angular workpieces. Although the chuck can achieve a clamping effect on the workpiece to a certain extent, due to the complex shape and numerous edges and corners of the multi-angular workpiece, the part that the chuck clamps first may be a relatively irregular part of the workpiece or a part that is subjected to relatively unbalanced force. It may only be clamped temporarily. During lathe processing, the workpiece will be affected by external forces such as cutting force and vibration. These forces often cause the originally unstable fixed parts to loosen. This loosening will not only lead to a decrease in processing accuracy, but may even cause processing failure in severe cases, thereby affecting production efficiency and product quality. It is necessary to propose a clamping tool for multi-angular workpieces. Utility Model Content

[0005] The utility model aims to provide a multi-angle workpiece clamping fixture for a lathe to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A multi-angle workpiece clamping tool for a lathe comprises a main body; a central groove extending from the top to the bottom is provided on the main body, a carrier is fixedly connected between the inner walls of the central groove, the top of the carrier extends to the top of the main body, three track grooves communicating with the interior of the central groove are equidistantly provided on the outer side of the main body, slides are slidably connected to the interior of the track grooves, and movable grooves are provided at the bottom of the track grooves; a pre-positioning component is provided on the top of the slide, a chuck is connected to the pre-positioning component, and the pre-positioning component is used to drive the chuck to elastically fix the workpiece before positioning; a vibration component is provided inside the chuck, and the vibration component is used to cooperate with the pre-positioning component to produce shaking to adjust the positioning posture of the workpiece; a control component is provided inside the central groove, and the control component is used to control the movement of the slide.

[0008] By adopting the above technical solution, by setting up a pre-positioning component, it is possible to pre-position the multi-angular workpiece before it is fully positioned. At this time, the workpiece is only restrained by elastic force and still has space to move. In addition, a vibration component is provided to synchronously generate vibrations in this process, thereby automatically adjusting the unstable clamping posture in this posture until the chuck completely clamps the workpiece. At this time, the workpiece will be in a more stable posture, thereby improving the stability of the chuck in clamping the multi-angular workpiece.

[0009] A further improvement of the technical solution of the utility model is that: the pre-positioning component includes a slide groove opened at the bottom of the chuck, a guide structure is slidably connected between the inner walls of the slide groove, a linkage block is fixedly connected to the top of the slide, the top of the linkage block extends to the inside of the slide groove and is fixedly connected to a slider, the top of the slider is slidably connected to the inner wall of the slide groove, a through hole is opened on the slider, the guide structure passes through the through hole, and a first spring is sleeved on the outer side of the guide structure; a pressure block is fixedly connected between the inner walls of the slide groove.

[0010] By adopting the above technical solution, at the initial stage of movement of the slider relative to the guide structure, when the chuck does not contact the workpiece, the slider pushes the chuck to move through the first spring until the chuck hits the workpiece; when the chuck hits the workpiece, it will be blocked, causing the slider to move relative to the chuck, squeezing the first spring.

[0011] A further improvement of the technical solution of the utility model is that the vibration component includes a protrusion, which is arranged on both sides of the inner wall of the slide groove, and a plurality of retraction grooves are symmetrically opened on both sides of the slide block, and a resistance block is slidably connected between the inner walls of the retraction groove, and a second spring is fixedly connected between the resistance block and one side of the inner wall of the retraction groove, and the resistance block is in contact with the protrusion, and the resistance block is arranged as a spherical structure.

[0012] By adopting the above technical solution, during the movement of the slider relative to the chuck, the abutment block will continuously abut against the protrusion, causing the chuck to vibrate.

[0013] A further improvement of the technical solution of the utility model is that the guide structure is arranged in a rod shape, the guide structure comprises a sliding part and a thin rod part with a diameter smaller than the sliding part, and a gradual change part is arranged between the thin rod part and the sliding part to make the diameters of the two parts change smoothly.

[0014] By adopting the above technical solution, before the slider and the chuck move equally, the through hole is located outside the thin rod part, and the through hole does not contact the guide structure, so as to facilitate the shaking of the slider; when the slider continues to slide, the through hole faces the sliding part. In this process, the through hole is slidably connected with the sliding part, and the resistance block is separated from the protrusion. At this time, the sliding of the slider is relatively smooth, and will not continue to shake.

[0015] A further improvement of the technical solution of the utility model is that the control component includes a mounting plate fixedly connected between the inner walls of the central groove, a hydraulic cylinder is fixedly installed on the top of the mounting plate, the piston rod of the hydraulic cylinder is fixedly connected to the lifting plate, the side close to the slide is hinged with a transmission rod, and the side of the transmission rod away from the slide is hinged to the lifting plate.

[0016] By adopting the above technical solution, the piston rod is retracted by controlling the operation of the hydraulic cylinder, so that the lifting plate moves downward, and then the slide table is driven to move to the closer side through the transmission rod, and then the slider is driven to move through the linkage block.

[0017] A further improvement of the technical solution of the utility model is that: teeth are arranged on the adjacent sides of the clamps, and the corners of the teeth are arranged as rounded corners.

[0018] The above technical solution makes it easy to squeeze the workpiece through the tooth pattern to increase the friction between the chuck and the workpiece, and can fit and fix the concave and convex parts of the workpiece to a certain extent.

[0019] A further improvement of the technical solution of the utility model is that: a plurality of dustproof shielding shells are fixedly connected to the outer side of the carrier at equal intervals, and the inner wall of the dustproof shielding shell is slidably connected to the outer side of the slide table.

[0020] By adopting the above technical solution, the dustproof cover can always cover the track groove, thereby preventing debris from entering the interior of the main body during the processing.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a multi-angular workpiece clamping tool for a lathe. By setting a pre-positioning component, the multi-angular workpiece can be pre-positioned before it is completely positioned. At this time, the workpiece is only bound by elastic force and still has room for movement. A vibration component is also provided to synchronously generate vibration during this process, thereby automatically adjusting the unstable clamping posture in this posture until the chuck completely clamps the workpiece. At this time, the workpiece will be in a more stable posture, thereby improving the stability of the chuck in clamping the multi-angular workpiece, which is beneficial to practical applications.

[0023] 2. The utility model provides a multi-angular workpiece clamping fixture for a lathe. By setting guide structures of different thicknesses, before the slider and the chuck move equally, the through hole is located outside the thin rod portion, and the through hole and the guide structure are not in contact, so as to facilitate the shaking of the slider; when the slider continues to slide, the through hole is opposite to the sliding portion. In this process, the through hole is slidably connected with the sliding portion, and at the same time, the resistance block is separated from the protrusion. At this time, the slider slides relatively smoothly and will not shake continuously, so that the clamping is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the main body of the utility model;

[0028] Figure 4 It is a partial structural schematic diagram of the pre-positioning component of the utility model;

[0029] Figure 5 This is a schematic diagram of the internal structure of the chuck of the utility model;

[0030] Figure 6 It is a schematic diagram of the partial structure of the vibration component of the utility model.

[0031] In the figure: 1. main body; 11. track groove; 12. central groove; 13. movable groove; 14. carrier; 21. mounting plate; 22. hydraulic cylinder; 23. lifting plate; 24. slide; 25. transmission rod; 3. chuck; 41. slide groove; 42. first spring; 43. linkage block; 44. slider; 45. through hole; 5. guide structure; 51. sliding part; 52. thin rod part; 53. gradient part; 6. pressure block; 71. protrusion; 72. retracted groove; 73. abutment block; 74. second spring; 8. tooth pattern; 9. dustproof cover. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the embodiments:

[0033] Example 1

[0034] like Figure 1-Figure 6 As shown, the utility model provides a multi-angular workpiece clamping tool for a lathe, comprising a main body 1; a central groove 12 extending from the top to the bottom is provided on the main body 1, a carrier 14 is fixedly connected between the inner walls of the central groove 12, the top of the carrier 14 extends to the top of the main body 1, three track grooves 11 communicating with the interior of the central groove 12 are equidistantly provided on the outer side of the main body 1, slides 24 are slidably connected to the interior of the track grooves 11, and movable grooves 13 are provided at the bottom of the track grooves 11; a pre-positioning component is provided on the top of the slide 24, a chuck 3 is connected to the pre-positioning component, and the pre-positioning component is used to drive the chuck 3 to be elastically fixed before positioning the workpiece; a vibration component is provided inside the chuck 3, and the vibration component is used to cooperate with the pre-positioning component to produce shaking to adjust the positioning posture of the workpiece; a control component is provided inside the central groove 12, and the control component is used to control the movement of the slide 24.

[0035] In this embodiment, by setting up a pre-positioning component, pre-positioning can be performed before the multi-angular workpiece is fully positioned. At this time, the workpiece is only restrained by elastic force and still has room for movement. A vibration component is also provided to synchronously generate vibrations during this process, thereby automatically adjusting the unstable clamping posture in this posture until the chuck 3 completely clamps the workpiece. At this time, the workpiece will be in a more stable posture, thereby improving the stability of the chuck 3 in clamping the multi-angular workpiece, which is beneficial to practical applications.

[0036] like Figure 2 and Figure 4 As shown, preferably, the pre-positioning component includes a slide groove 41 opened at the bottom of the chuck 3, a guide structure 5 is slidably connected between the inner walls of the slide groove 41, a linkage block 43 is fixedly connected to the top of the slide 24, the top of the linkage block 43 extends to the inside of the slide groove 41 and is fixedly connected to a slider 44, the top of the slider 44 is slidably connected to the inner wall of the slide groove 41, a through hole 45 is opened on the slider 44, the guide structure 5 passes through the through hole 45, and a first spring 42 is sleeved on the outer side of the guide structure 5; a pressure block 6 is fixedly connected between the inner walls of the slide groove 41.

[0037] In this embodiment, at the initial stage of movement of the slider 44 relative to the guide structure 5, when the chuck 3 does not contact the workpiece, the slider 44 pushes the chuck 3 to move through the first spring 42 until the chuck 3 hits the workpiece; when the chuck 3 hits the workpiece, it will be blocked, causing the slider 44 to move relative to the chuck 3, squeezing the first spring 42.

[0038] like Figure 4 and Figure 5As shown, preferably, the vibration assembly includes a protrusion 71, which is arranged on both sides of the inner wall of the slide groove 41, and a plurality of retracted grooves 72 are symmetrically opened on both sides of the slider 44. A resistance block 73 is slidably connected between the inner walls of the retracted groove 72, and a second spring 74 is fixedly connected between the resistance block 73 and one side of the inner wall of the retracted groove 72. The resistance block 73 contacts the protrusion 71, and the resistance block 73 is arranged as a spherical structure.

[0039] In this embodiment, when the slider 44 moves relative to the chuck 3 , the abutment block 73 will continuously abut against the protrusion 71 , causing the chuck 3 to vibrate.

[0040] like Figure 4 and Figure 6 As shown, preferably, the guide structure 5 is configured to be rod-shaped, and the guide structure 5 includes a sliding portion 51 and a thin rod portion 52 whose diameter is smaller than that of the sliding portion 51 , and a gradual portion 53 is provided between the thin rod portion 52 and the sliding portion 51 to make the diameters of the two portions change smoothly.

[0041] In this embodiment, before the slider 44 and the chuck 3 move equally, the through hole 45 is located outside the thin rod portion 52, and the through hole 45 does not contact the guide structure 5, so that the slider 44 can shake; when the slider 44 continues to slide, the through hole 45 faces the sliding portion 51. During this process, the through hole 45 is slidably connected to the sliding portion 51, and the abutment block 73 is disengaged from the protrusion 71. At this time, the slider 44 slides relatively smoothly and will not continue to shake.

[0042] Example 2

[0043] like Figure 2 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the control component includes a mounting plate 21 fixedly connected between the inner walls of the central groove 12, a hydraulic cylinder 22 is fixedly installed on the top of the mounting plate 21, the piston rod of the hydraulic cylinder 22 is fixedly connected to the lifting plate 23, and the side close to the slide 24 is hinged with a transmission rod 25, and the side of the transmission rod 25 away from the slide 24 is hinged to the lifting plate 23.

[0044] In this embodiment, the hydraulic cylinder 22 is controlled to work and the piston rod is retracted, so that the lifting plate 23 moves downward, and the slide 24 is driven to move toward the adjacent side through the transmission rod 25, and the slider 44 is driven to move through the linkage block 43.

[0045] like Figure 1 and Figure 2 As shown, preferably, teeth 8 are provided on the adjacent sides of the clamping heads 3, and the corners of the teeth 8 are rounded.

[0046] In this embodiment, the tooth pattern 8 facilitates squeezing with the workpiece to increase the friction between the chuck 3 and the workpiece, and can fit and fix the concave and convex parts of the workpiece to a certain extent.

[0047] like Figure 1 and Figure 2 As shown, preferably, a plurality of dustproof shielding shells 9 are equidistantly and fixedly connected to the outer side of the carrier 14 , and the inner wall of the dustproof shielding shells 9 is slidably connected to the outer side of the slide 24 .

[0048] In this embodiment, the dustproof cover 9 can always cover the track groove 11, thereby preventing debris from entering the interior of the main body 1 during the processing.

[0049] The following is a detailed description of the working principle of the multi-angular workpiece clamping fixture used on the lathe.

[0050] like Figure 1-Figure 6 As shown, the multi-angular workpiece is placed on the carrier 14. When clamping, the hydraulic cylinder 22 is controlled to work and the piston rod is retracted, so that the lifting plate 23 moves downward, and then the slide 24 is driven to move to the adjacent side through the transmission rod 25, and then the slider 44 is driven to move through the linkage block 43. At the initial stage of movement, when the chuck 3 does not contact the workpiece, the slider 44 pushes the chuck 3 to move through the first spring 42 until the chuck 3 hits the workpiece; before the slider 44 and the chuck 3 move relative to each other, the through hole 45 is located outside the thin rod portion 52, and the through hole 45 does not contact the guide structure 5; when the chuck 3 hits the workpiece, it will be blocked, so that the slider 44 moves relative to the chuck 3, squeezing the first spring 42. During the sliding process, the resistance block 73 will continuously resist the protrusion 71, causing the chuck 3 to shake, and at this time the workpiece is in At the position between each chuck 3, the clamping force is not very large, and the shaking of the chuck 3 will cause the position of the workpiece to be continuously adjusted. The clamping parts that are unstable and can be loosened by vibration will be adjusted under vibration until they can be clamped at a relatively stable angle; the continued sliding of the slider 44 makes the through hole 45 face the sliding part 51. During this process, the through hole 45 is slidably connected to the sliding part 51, and the abutment block 73 is separated from the protrusion 71. At this time, the sliding of the slider 44 is relatively smooth, and there will be no continuous vibration; the slider 44 will continue to move until it abuts against the pressure block 6, at which time the hydraulic cylinder 22 is controlled to stop working to complete the clamping; a pressure sensor can be installed on the slider 44, and a signal will be transmitted to the processor when it is squeezed with the pressure block 6, and then the hydraulic cylinder 22 can be controlled to stop working through an external controller.

[0051] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-angle workpiece clamping tool for a lathe, comprising a main body (1); characterized in that: The main body (1) is provided with a central groove (12) extending from the top to the bottom, a carrier (14) is fixedly connected between the inner walls of the central groove (12), the top of the carrier (14) extends to the top of the main body (1), and three track grooves (11) communicating with the interior of the central groove (12) are equidistantly provided on the outer side of the main body (1), the interior of each track groove (11) is slidably connected with a slide (24), and a movable groove (13) is provided at the bottom of each track groove (11); A pre-positioning component is arranged on the top of the slide (24), a chuck (3) is connected to the pre-positioning component, and the pre-positioning component is used to drive the chuck (3) to elastically fix the workpiece before positioning; a vibration component is arranged inside the chuck (3), and the vibration component is used to cooperate with the pre-positioning component to produce shaking to adjust the positioning posture of the workpiece; a control component is arranged inside the central groove (12), and the control component is used to control the movement of the slide (24).

2. The multi-angle workpiece clamping fixture for a lathe according to claim 1, characterized in that: The pre-positioning component comprises a slide groove (41) provided at the bottom of the chuck (3); a guide structure (5) is slidably connected between the inner walls of the slide groove (41); a linkage block (43) is fixedly connected to the top of the slide table (24); the top of the linkage block (43) extends to the inside of the slide groove (41) and is fixedly connected to a slider (44); the top of the slider (44) is slidably connected to the inner wall of the slide groove (41); a through hole (45) is provided on the slider (44), and the guide structure (5) passes through the through hole (45); a first spring (42) is sleeved on the outer side of the guide structure (5); a pressure block (6) is fixedly connected between the inner walls of the slide groove (41).

3. The multi-angle workpiece clamping fixture for a lathe according to claim 2, characterized in that: The vibration component comprises a protrusion (71), the protrusion (71) is arranged on both sides of the inner wall of the slide groove (41), and a plurality of retracted grooves (72) are symmetrically opened on both sides of the slide block (44), a resistance block (73) is slidably connected between the inner walls of the retracted groove (72), a second spring (74) is fixedly connected between the resistance block (73) and one side of the inner wall of the retracted groove (72), the resistance block (73) is in contact with the protrusion (71), and the resistance block (73) is arranged as a spherical structure.

4. The multi-angle workpiece clamping fixture for a lathe according to claim 3, characterized in that: The guide structure (5) is configured to be rod-shaped, and comprises a sliding portion (51) and a thin rod portion (52) having a diameter smaller than that of the sliding portion (51), and a gradual change portion (53) is provided between the thin rod portion (52) and the sliding portion (51) to enable the diameters of the two portions to change smoothly.

5. The multi-angle workpiece clamping fixture for a lathe according to claim 1, characterized in that: The control assembly comprises a mounting plate (21) fixedly connected between the inner walls of the central groove (12); a hydraulic cylinder (22) is fixedly installed on the top of the mounting plate (21); a piston rod of the hydraulic cylinder (22) is fixedly connected to a lifting plate (23); a transmission rod (25) is hingedly connected to the side close to the slide (24); and a side of the transmission rod (25) away from the slide (24) is hingedly connected to the lifting plate (23).

6. The multi-angle workpiece clamping fixture for a lathe according to claim 5, characterized in that: The adjacent sides of the clamping heads (3) are each provided with tooth patterns (8), and the corner positions of the tooth patterns (8) are set as rounded corners.

7. The multi-angle workpiece clamping fixture for a lathe according to claim 6, characterized in that: A plurality of dustproof shielding shells (9) are fixedly connected to the outer side of the carrier (14) at equal intervals, and the inner wall of the dustproof shielding shell (9) is slidably connected to the outer side of the slide table (24).

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