Universal workpiece positioning device for lathe

Abstract

The utility model discloses a universal workpiece positioning device for a lathe, which comprises a supporting seat (1), and is characterized in that a lead screw (3) is rotatably supported in the supporting seat (1) through a bearing (2), the end part of the lead screw (3) is connected with a hand wheel (4) positioned outside the supporting seat (1), the supporting seat (1) is also connected with a guide rod (5), the guide rod (5) is movably connected with a movable block (6), and the movable block (6) is connected with a positioning block (7). A nut block (7) connected with the lead screw (3) in a matched mode is arranged in the center of the movable block (6), and the end face of the movable block (6) is further rotationally connected with a positioning disc (9) through a pivotal bearing (8).

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning operation in the machining process, especially a general workpiece positioning device for lathe. BACKGROUND

[0002] When the cylindrical workpiece is machined by the lathe, sometimes the length of the workpiece protruding from the clamp part needs to be strictly limited, but the length of the workpiece itself is different, so an auxiliary positioning device needs to be set on the lathe. The traditional positioning device is a positioning block connected to the bed body through a fastener. By adjusting the length (or thickness) of the positioning block, the relative position between the positioning surface on the positioning block in contact with the workpiece and the bed body is changed, and then the relative position relationship between the other end of the workpiece and the clamp is changed.

[0003] In this traditional positioning device and positioning method, different lengths of positioning blocks are set for different lengths of workpieces. When the next length of workpiece is replaced, the previous positioning block needs to be removed and the appropriate positioning block needs to be fixed and connected to the bed body. This way is time-consuming and laborious, not only consumes a certain amount of labor, but also affects the production efficiency and delays the production rhythm.

[0004] Therefore, a method or device is needed to solve the above problems. SUMMARY

[0005] The utility model discloses in order to solve the above insufficient of prior art, propose a kind of structure simple, design ingenious, layout reasonable, can be adjusted in real time according to the length of workpiece to be machined, to reach the machining of a plurality of specifications workpiece, save cost etc. purposes of workpiece positioning device.

[0006] The technical solution of the utility model is: a general workpiece positioning device for lathe, including support seat 1, its characterized in that: the support seat 1 is rotatably supported with lead screw 3 in bearing 2, the end of lead screw 3 is connected with hand wheel 4 located in the outside of support seat 1, support seat 1 is also connected with guide rod 5, the movable block 6 is movably connected on guide rod 5, and the center of movable block 6 is provided with nut block 7 matched with lead screw 3,

[0007] The end face of movable block 6 is also rotatably connected with positioning disc 9 through rotary bearing 8.

[0008] Compared with prior art, the utility model has the following advantages:

[0009] This type of universal workpiece positioning device for lathes features a simple structure, ingenious design, and reasonable layout. Addressing the problems inherent in traditional lathe positioning of long cylindrical workpieces, it employs a unique structure. A handwheel drives a leadscrew, converting torque into linear motion of a movable block. A positioning disc on the surface of this movable block pushes one end of the workpiece, adjusting the other end to protrude beyond the fixture length. It can be used for positioning various cylindrical workpieces of different specifications. The operation is simple and effective, significantly reducing labor costs and improving work efficiency compared to traditional methods that require disassembling and assembling positioning blocks. Furthermore, its simple manufacturing process and low cost make it highly advantageous and suitable for widespread application in this field, with a promising market prospect. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0011] Figure 2 yes Figure 1 Enlarged view of part A in the image. Detailed Implementation

[0012] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figure 1 , Figure 2 As shown: A general-purpose workpiece positioning device for lathes includes a support base 1, within which a lead screw 3 is rotatably supported via a bearing 2. The end of the lead screw 3 is connected to a handwheel 4 located outside the support base 1. A guide rod 5 is also connected to the support base 1, and a movable block 6 is movably connected to the guide rod 5. A nut block 7, which mates with the lead screw 3, is provided at the center of the movable block 6.

[0013] A positioning disk 9 is also rotatably connected to the end face of the movable block 6 via a rotary bearing 8.

[0014] The working process of the universal workpiece positioning device for lathes in this embodiment of the utility model is as follows: First, the support base 1 is fixedly connected to the back side of the machine tool with bolts. The lead screw 3 and guide rod 5 connected to the support base 1 are both inserted into the hollow spindle 10 of the lathe. Then, the fixture 11 is opened, and the cylindrical workpiece 12 to be processed is inserted into the spindle 10 through the opening on the fixture 11 until the cylindrical workpiece 12 can no longer move. At this time, the end face of the cylindrical workpiece 12 is released from the positioning plate 9. The lead screw 3 and guide rod 5 are inserted into the interior of the cylindrical workpiece 12. In the initial state, the movable block 6 is at the extreme position far away from the fixture 1.

[0015] Before processing, the operator holds the hand wheel 4 to drive the screw rod 3 to rotate. Since the nut block 7 at the center of the movable block 6 is connected with the screw rod 3, and the movable block 6 cannot rotate with the screw rod 3 under the action of the guide rod 5, the movable block 6 will move linearly along the axial direction of the screw rod 3, and the positioning disc 9 will push the cylindrical workpiece 12 to move together. During the movement, the operator detects the position of the other end of the cylindrical workpiece 12. When the distance between the end face and the clamp 11 reaches the required value, stop shaking the hand wheel 4, and then clamp the cylindrical workpiece 12 with the clamp 11, that is, the precise adjustment of the distance of the protruding part of the cylindrical workpiece 11 is completed.

[0016] The main shaft 10 of the lathe drives the cylindrical workpiece 12 to rotate through the clamp 11 for processing. During the rotation of the cylindrical workpiece 12, the positioning disc 9 in contact with it also rotates, that is, the positioning disc 9 rotates relative to the movable block 6 under the action of the rotary bearing 8.

[0017] After one processing is completed, open the clamp 11, take down the cylindrical workpiece 12 that has completed processing, rotate the hand wheel 4 in the reverse direction, and let the movable block 6 return to the initial position, waiting for the positioning operation of the next cylindrical workpiece 12.

[0018] It can adjust the relative position of the workpiece on the main shaft 10 in real time and quickly, and the adjustment process is convenient and fast, which can greatly improve the work efficiency compared with the traditional method.

Claims

1. A universal workpiece positioning device for a lathe comprising a support seat (1), characterized in that: The support seat (1) is rotatably supported by a bearing (2) with a lead screw (3), the end of the lead screw (3) is connected with a hand wheel (4) located outside the support seat (1), a guide rod (5) is further connected to the support seat (1), a movable block (6) is movably connected to the guide rod (5), and a nut block (7) that is matched with the lead screw (3) is arranged at the center of the movable block (6), A positioning disc (9) is further rotatably connected to the end face of the movable block (6) through a rotary bearing (8).

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