Workpiece fixing clamp device of numerically controlled lathe

Abstract

The utility model discloses a numerical control lathe workpiece fixing clamp device, which relates to the technical field of workpiece clamps and comprises a chuck, four movable grooves are arranged at the top end of the chuck and are uniformly distributed, and a limit ring is fixedly mounted at the bottom of each movable groove close to the center. Single clamping jaws can be switched to select whether to act synchronously with other clamping jaws or not, so that a standard part can be centered and clamped, a non-standard part can also be clamped, and when a next non-standard part is clamped, only the four clamping jaws need to be linked to act synchronously, so that the clamping efficiency of the next non-standard part is improved. According to the workpiece fixing clamp device for the numerical control lathe, the non-standard part can be rapidly clamped and unloaded by rotating the clamping device, the applicability effect of the device is effectively improved, and the problem that a traditional workpiece fixing clamp device for the numerical control lathe cannot clamp the standard part and the non-standard part is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece jigs, in particular to a fixing jig device for workpieces on a numerically controlled lathe. Background Technique

[0002] The fixture of a numerically controlled machine tool is an indispensable part in the machining process. It is used to fix the workpiece to ensure accurate positioning and stable fixation of the workpiece during the machining process. Fixtures can be divided into various types, such as general fixtures, special fixtures, adjustable fixtures, combined fixtures, etc. General fixtures have a certain degree of versatility and can be used for clamping different workpieces, such as three-jaw self-centering chucks, four-jaw independent chucks, etc.

[0003] However, for the existing four-jaw independent chuck, manual operations need to be performed on the moving mechanisms of the four clamping plates respectively. For regular components, centering and clamping cannot be directly carried out. Although the fixture with synchronous telescoping can perform centering clamping, it will show unstable clamping when clamping non-standard parts. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a fixing jig device for workpieces on a numerically controlled lathe, which can effectively solve the technical problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A fixing jig device for workpieces on a numerically controlled lathe includes a chuck. An activity groove is opened at the top end of the chuck. There are four activity grooves and they are evenly distributed. A limiting ring is fixedly installed at the bottom of the activity groove near the center position. A lead screw is rotatably installed through the limiting ring. A clamping jaw is slidably installed in the activity groove. A switching structure is arranged between the lead screw and the chuck.

[0007] The switching structure includes a rotation groove, which is opened at the position near the bottom end of the chuck surface. A rotation ring is rotatably installed in the rotation groove. A linkage gear ring is arranged at the position near the outer side of the top end of the rotation ring. A sliding groove and a limiting groove are respectively opened at the center position of the end of the lead screw far away from the chuck. A switching column is slidably installed in the sliding groove. A limiting rod is fixedly connected to one end of the surface of the switching column. A driving gear is fixedly connected to the other end of the switching column. An adjusting seat is fixedly connected to one side position of the surface of one end of the lead screw. A bolt is threadedly connected in the adjusting seat. Threaded groove one and threaded groove two are respectively opened at the end of the switching column surface near the adjusting seat.

[0008] As a further scheme of the utility model, a scale is fixedly installed at the position on one side of the top end of the chuck near the activity groove, and a pointer is fixedly connected to one side of the clamping jaw.

[0009] As a further solution of the present utility model, the claw is threadedly connected to the lead screw, and the contact surface between the claw and the movable groove is in a "cross" shape structure.

[0010] As a further solution of the present utility model, the cross-section of the rotating groove is in an "L" shape structure, and the driving gear and the linkage gear ring are meshed and connected.

[0011] As a further solution of the present utility model, the limiting rod is slidably connected to the limiting groove, and the cross-section of the switching column is in a petal shape structure.

[0012] As a further solution of the present utility model, the limiting groove is opened inside the lead screw and does not contact the end surface of the lead screw.

[0013] As a further solution of the present utility model, the bolt can be threadedly connected to the first thread groove and the second thread groove, and the surface of the bolt is in a frosted structure.

[0014] The beneficial effects of the present utility model are as follows:

[0015] By setting the switching structure, a single claw can be switched to be synchronized with other claws or not, so that both standard workpieces and non-standard workpieces can be fixed and clamped. Moreover, for the next identical non-standard workpiece, only by synchronously moving the four claws, clamping and unloading can be achieved, which greatly improves the efficiency of workpiece unloading and clamping.

[0016] By setting the scale and the pointer to cooperate with the switching structure, when it is necessary to clamp a standard part, the distance between the claw and the center of the chuck can be quickly and accurately adjusted, so that the claw can perform centering clamping on the standard part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a workpiece fixing fixture device for a numerically controlled lathe according to the present utility model;

[0018] Figure 2 is a schematic diagram of the overall structure of a workpiece fixing fixture device for a numerically controlled lathe according to the present utility model Figure 1 magnified schematic diagram of area A;

[0019] Figure 3 is a partially sectional and split schematic diagram of a workpiece fixing fixture device for a numerically controlled lathe according to the present utility model;

[0020] Figure 4 is a split schematic diagram of the switching structure of a workpiece fixing fixture device for a numerically controlled lathe according to the present utility model;

[0021] Figure 5 is a partially split schematic diagram of the switching structure of a workpiece fixing fixture device for a numerically controlled lathe according to the present utility model.

[0022] In the figure: 1, chuck; 2, movable groove; 3, limit ring; 4, lead screw; 5, jaw; 6, switching structure; 7, scale; 8, pointer; 601, rotating groove; 602, rotating ring; 603, linkage gear ring; 604, sliding groove; 605, limit groove; 606, switching column; 607, limit rod; 608, driving gear; 609, adjusting seat; 610, bolt; 611, first thread groove; 612, second thread groove. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] As Figures 1-5 shown, a workpiece fixing fixture device for a numerically controlled lathe includes a chuck 1. An activity groove 2 is opened at the top end of the chuck 1. There are four activity grooves 2 and they are evenly distributed. A limit ring 3 is fixedly installed at the bottom center position of the activity groove 2. A lead screw 4 is rotatably installed through the limit ring 3. A jaw 5 is slidably installed in the activity groove 2. A switching structure 6 is provided between the lead screw 4 and the chuck 1;

[0025] The switching structure 6 includes a rotating groove 601. The rotating groove 601 is opened at the bottom end position on the surface of the chuck 1. A rotating ring 602 is rotatably installed in the rotating groove 601. A linkage gear ring 603 is provided at the outer side position at the top end of the rotating ring 602. A sliding groove 604 and a limit groove 605 are respectively opened at the center position of the end of the lead screw 4 away from the chuck 1. A switching column 606 is slidably installed in the sliding groove 604. A limit rod 607 is fixedly connected to one end of the surface of the switching column 606. The other end of the switching column 606 is fixedly connected to a driving gear 608. One end surface of the lead screw 4 is fixedly connected with an adjusting seat 609. A bolt 610 is threadedly connected in the adjusting seat 609. A first thread groove 611 and a second thread groove 612 are respectively opened at one end of the surface of the switching column 606 near the adjusting seat 609.

[0026] In this embodiment, a scale 7 is fixedly installed at one side position of the top end of the chuck 1 near the activity groove 2. A pointer 8 is fixedly connected to one side of the jaw 5.

[0027] By the pointer 8 indicating on the scale 7, the four jaws 5 can be precisely adjusted, facilitating the centering clamping of the standard parts by the jaws 5.

[0028] In this embodiment, the jaw 5 is threadedly connected with the lead screw 4, and the contact surface between the jaw 5 and the activity groove 2 is in a "cross" shape structure.

[0029] The rotation of the screw rod 4 can drive the claw 5 to slide, thereby adjusting the position of the claw 5. The "cross" structure plays a limiting role, making the claw 5 move more stably along the movable groove 2.

[0030] In this embodiment, the cross section of the rotating groove 601 is an “L”-shaped structure, and the driving gear 608 is meshingly connected with the linkage gear ring 603 .

[0031] The “L”-shaped structure plays a limiting role, the rotating ring 602 will not leave the rotating groove 601, the driving gear 608 can drive the linkage ring gear 603 to rotate, and the linkage ring gear 603 can drive all the driving gears 608 to rotate synchronously.

[0032] In this embodiment, the limiting rod 607 is slidably connected to the limiting groove 605, and the cross section of the switching column 606 is a petal-shaped structure.

[0033] The limiting rod 607 plays a limiting role, which can prevent the switching column 606 from being separated from the screw rod 4, and the petal-shaped structure makes it impossible for the switching column 606 to rotate inside the sliding groove 604.

[0034] In this embodiment, the limiting groove 605 is provided inside the screw rod 4 and does not contact the end surface of the screw rod 4 .

[0035] The limiting groove 605 does not contact the end surface of the screw rod 4 , so that when the limiting rod 607 moves along the limiting groove 605 , it will not be separated from the screw rod 4 .

[0036] In this embodiment, the bolt 610 may be threadedly connected to the first thread groove 611 and the second thread groove 612 , and the surface of the bolt 610 is a frosted structure.

[0037] The bolt 610 can be threadedly connected with the thread groove 1 611 and the thread groove 2 612 , which plays a positioning role and can prevent the switching column 606 from being displaced. The frosted structure makes the rotation of the bolt 610 more convenient and stable.

[0038] It should be noted that the utility model is a workpiece fixing fixture device for a CNC lathe. When in use, when clamping a standard workpiece, by rotating the active gear 608, the active gear 608 drives the linkage gear ring 603 and the rotating ring 602 to rotate along the rotating groove 601, thereby driving all the active gears 608 to rotate, so that the screw rod 4 rotates. Due to the limiting effect of the limiting ring 3, the screw rod 4 will not be displaced. The screw rod 4 drives the claw 5 to move along the movable groove 2. Since the active gear 608 is meshed and connected with the linkage gear ring 603, the four claws 5 move synchronously, thereby completing the centering clamping of the standard part.

[0039] When it is necessary to clamp non-standard parts, by rotating the bolt 610, the bolt 610 rotates along the adjusting seat 609 and disengages from the first thread groove 611. By pulling the driving gear 608, the driving gear 608 drives the switching column 606 and the limiting rod 607 to displace along the sliding groove 604 and the limiting groove 605 respectively. The limiting rod 607 and the limiting groove 605 play a limiting role to prevent the switching column 606 from disengaging from the sliding groove 604. After pulling to the end, reverse-rotate the bolt 610 so that the bolt 610 is connected to the second thread groove 612. At this time, the driving gear 608 is disengaged from the linkage gear ring 603, causing this jaw 5 to disengage from the synchronous movement with other jaws 5. By adjusting whether the jaw 5 and other jaws 5 move synchronously, non-standard parts can be clamped. By re-meshing the driving gear 608 with the linkage gear ring 603, the four jaws 5 move synchronously, and the next identical non-standard workpiece can be quickly disassembled and clamped;

[0040] When it is necessary to re-center and clamp standard parts, by rotating the driving gear 608 of the jaw 5 that has disengaged from the synchronous movement, the jaw 5 can be adjusted. By aligning the pointer 8 on one side of the jaw 5 with the scale 7, the pointers 8 on the sides of the four jaws 5 are aligned with the scales on the same scale 7. Then, through the switching structure 6, the four jaws 5 are switched to synchronous movement, and the standard parts can be re-centered and clamped.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece fixing fixture device for a numerically controlled lathe, comprising a chuck (1), wherein a movable groove (2) is formed at the top of the chuck (1), there are four movable grooves (2) and they are evenly distributed, a limiting ring (3) is fixedly installed at a position near the center of the bottom of the movable groove (2), a lead screw (4) is rotatably installed through the limiting ring (3), and a claw (5) is slidably installed in the movable groove (2), and the characteristics are as follows: A switching structure (6) is provided between the lead screw (4) and the chuck (1); The switching structure (6) includes a rotating groove (601) which is opened at the position near the bottom end on the surface of the chuck (1). A rotating ring (602) is rotatably installed in the rotating groove (601). A linkage gear ring (603) is arranged at the outer side position near the top end of the rotating ring (602). A sliding groove (604) and a limiting groove (605) are respectively opened at the central position of the end of the lead screw (4) far away from the chuck (1). A switching column (606) is slidably installed in the sliding groove (604). A limiting rod (607) is fixedly connected to one end of the surface of the switching column (606). A driving gear (608) is fixedly connected to the other end of the switching column (606). An adjusting seat (609) is fixedly connected to the surface of one end of the lead screw (4) near one side. A bolt (610) is threadedly connected in the adjusting seat (609). A first thread groove (611) and a second thread groove (612) are respectively opened at the end of the surface of the switching column (606) near the adjusting seat (609).

2. The CNC lathe workpiece fixing fixture device according to claim 1, characterized in that: A scale (7) is fixedly installed at the position near one side of the movable groove (2) at the top end of the chuck (1). A pointer (8) is fixedly connected to one side of the claw (5).

3. A workpiece fixing fixture device for a numerically controlled lathe according to claim 1, characterized in that: The claw (5) is threadedly connected to the lead screw (4), and the contact surface between the claw (5) and the movable groove (2) is in a "cross" shaped structure.

4. A workpiece fixing fixture device for a numerically controlled lathe according to claim 1, characterized in that: The cross section of the rotating groove (601) is in an "L" shaped structure, and the driving gear (608) is meshed with the linkage gear ring (603).

5. A workpiece fixing fixture device for a numerically controlled lathe according to claim 1, characterized in that: The limiting rod (607) is slidably connected with the limiting groove (605), and the cross section of the switching column (606) is in a petal shaped structure.

6. A workpiece fixing fixture device for a numerically controlled lathe according to claim 1, characterized in that: The limiting groove (605) is opened inside the lead screw (4) and does not contact the end face of the lead screw (4).

7. A workpiece fixing fixture device for a numerically controlled lathe according to claim 1, characterized in that: The bolt (610) can be threadedly connected with the first thread groove (611) and the second thread groove (612), and the surface of the bolt (610) is in a frosted structure.

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