Chuck backing baffle capable of being adjusted and positioned

Abstract

The utility model discloses a chuck backing baffle capable of adjusting and positioning, a baffle body is provided with a claw groove which is unfolded towards the periphery, the outer end of the claw groove is in a horn mouth shape, the bottom edge of the inner end of the claw groove is a groove bottom edge, and the groove bottom edge is perpendicular to two parallel side edges of the claw groove to form a right angle; a step base plate is arranged in the center of one face of the baffle body, a boss is arranged in the center of the other face of the baffle body, center lines of the baffle body, the step base plate and the boss are coaxial and provided with threaded through holes, and adjusting screws are mounted in the threaded through holes. The step base plate and the chuck inner hole are matched and positioned to eliminate a gap, and the baffle body is prevented from generating noise due to friction and collision with the clamping jaw due to movement during working; the clamping length position of a workpiece on the chuck can be accurately adjusted through the screw rod installed in the central threaded through hole of the chuck backing baffle, and firmness and reliability are achieved; installation is very convenient, working efficiency is greatly improved, operation and use are convenient and fast, machining stability of a machine tool is guaranteed, and product quality is improved.

Description

Technical Field

[0001] The utility model relates to a mechanical processing auxiliary equipment tooling, in particular to a chuck backing baffle with adjustable positioning. Background Art

[0002] The chuck backing plate is a device used to position the workpiece when the machine tool chuck is clamped. The purpose of the chuck backing plate is to prevent displacement when the lathe processes shaft parts, which may cause quality, equipment, and personnel safety accidents. Figure 1 The circular original baffle 01 (as shown) is provided with three original claw grooves 02, and the three original claw grooves 02 are spread out at 120°, and both ends of each groove corner edge 03 are beveled, and the width of the two side edges of the original claw groove 02 is greater than the width of the machine tool claw. Although this backing baffle plays a role in preventing the axial displacement of the workpiece during the turning process, the axial length of the part clamping the workpiece on the chuck is fixed and cannot be adjusted, which is relatively rigid and cannot be clamped according to the actual situation of the workpiece, resulting in the claws clamping too much part of the workpiece, which brings a lot of trouble to the operator and causes many inconveniences in operation.

[0003] The original backing baffle is a simple baffle. There is a certain gap between the baffle slot and the claw, so it is convenient to put it in the claw when in use. However, in actual use, the gap will cause stringing between the claws, causing noise. Over time, the larger the gap, the louder the noise. Because the clamping part is fixed and there are many clamping parts, it brings a lot of inconvenience to the operator. It is easy to be inconsistent with the rotation center of the lathe. If the tailstock center is used to forcibly support the center hole of the workpiece, the workpiece will be held, causing the tailstock center to swing. Even for turning processing with a larger workpiece diameter, vibration will occur, seriously affecting the processing quality of the workpiece. Utility Model Content

[0004] In view of the above problems, the utility model provides a chuck backing baffle with adjustable positioning, so that the backing baffle can adjust the clamping positioning according to the needs of machine tool processing, realize the convenient operation of the backing baffle, stable and reliable positioning, and improve work efficiency and processing quality.

[0005] To achieve the above purpose, the utility model adopts the following technical solution. A chuck backing baffle with adjustable positioning, including a baffle body, the baffle body is in a round cake shape, a claw groove is arranged on the baffle body, the outer end of the claw groove is in a trumpet shape, the bottom edge of the inner end is the bottom edge of the groove, and the bottom edge of the groove is perpendicular to the two parallel sides of the claw groove and forms a right angle; a step pad is arranged at the center of one side of the baffle body, and a boss is arranged at the center of the other side, the center lines of the baffle body, the step pad and the boss are coaxial and a threaded through hole is arranged, and an adjusting screw is installed in the threaded through hole.

[0006] Preferably, the expansion angle of the center line of the bottom edge of the groove on the baffle body is 120°.

[0007] Preferably, the outer end of the adjusting screw is hexagonal.

[0008] Preferably, the groove width of the claw groove corresponds to and matches the width of the machine tool chuck claw.

[0009] Preferably, the diameter of the step pad matches the diameter of the inner hole of the machine tool chuck.

[0010] Preferably, the groove bodies of the step pad and the baffle body at the overlapped claw grooves are the same.

[0011] The utility model improves the original structure of the fixed clamping part of the chuck, and the step pad is positioned with the inner hole of the chuck to eliminate the gap, and the baffle body is prevented from rubbing and colliding with the claws to generate noise due to string movement during operation; the screw installed in the central threaded through hole of the chuck backing baffle can accurately adjust the clamping length position of the workpiece on the chuck, and the machining operator can quickly adjust the positioning of the clamping part according to the needs, which is firm and reliable; in the trumpet-shaped claw groove, when the claw enters the trumpet-shaped guide area, the backing baffle automatically overlaps with the chuck claw without the need of external force, and the installation is very convenient, which greatly improves the work efficiency, is convenient and quick to operate, ensures the stability of machine tool processing, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the plane structure diagram of the existing baffle;

[0013] Figure 2 This is the front view of the structure of the utility model;

[0014] Figure 3 yes Figure 2 Schematic diagram of the AA section structure.

[0015] In the figure: 01-original baffle, 02-original claw groove, 03-groove corner edge; 1-baffle body, 2-claw groove, 3-groove bottom edge, 4-adjusting screw, 5-step pad, 6-boss. DETAILED DESCRIPTION

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments. Figure 2 and Figure 3A chuck backing baffle with adjustable positioning includes a baffle body 1 in the shape of a round pancake, and three claw grooves 2 are evenly distributed on the baffle body 1 and expand toward the periphery, and the groove width of the claw groove 2 corresponds to the width of the machine tool chuck claw. The outer end of the claw groove 2 is in the shape of a trumpet, and the bottom edge of the inner end is the groove bottom edge 3. The groove bottom edge 3 is perpendicular to the two parallel sides of the claw groove 2 and is at a right angle, and the centerline expansion angle of the groove bottom edge 3 on the baffle body 1 is 120°. A step pad 5 is provided at the center position of one side of the baffle body 1, and the diameter of the step pad 5 matches the diameter of the inner hole of the machine tool chuck; a boss 6 is provided at the center position of the other side, and the center lines of the baffle body 1, the step pad 5 and the boss 6 are coaxial and provided with a threaded through hole, and an adjusting screw 4 is installed in the threaded through hole, and the outer end of the adjusting screw 4 is hexagonal.

[0017] When the utility model is used, the side of the backing baffle with the step pad 5 is first aligned and installed in the inner hole of the chuck, so that the outer side of the baffle body 1 of the backing baffle is flush with the outer plane of the chuck, and the three claw grooves 2 of the backing baffle coincide with the positions of the chuck grooves.

[0018] If the claw groove 2 does not overlap with the chuck groove, when installing the claw, the three trumpet-shaped notches at the top of the backing baffle claw groove 2, when the claw enters the notch, the claw automatically matches with the claw groove 2 through the guiding effect of the trumpet mouth. After that, clamp the workpiece, push the tailstock top workpiece and the backing baffle adjusting screw 4 slightly touch, clamp the workpiece and start the operation. After installing the claw, you can also align one side of the step pad 5 with the inner hole of the chuck, align the three chuck claws with the three claw grooves 2, and install the utility model chuck backing baffle on the chuck, adjust the adjusting screw 4, and then clamp the workpiece, push the tailstock top and the workpiece slightly touch, and the adjusting screw 4 can clamp the workpiece.

[0019] The utility model adds a step pad 5 matching the inner hole of the chuck at the center of the original backing baffle, realizes center positioning, and avoids the problem of the chuck backing baffle of the utility model moving between the claws. At the same time, an adjusting screw 4 is added at the center of the backing baffle of the chuck, which can adjust the clamping part according to the clamping needs of the workpiece processing, avoiding the generation of vibration when processing the workpiece. In addition, the notch of the claw groove 2 is set to a trumpet shape. Even if the backing baffle of the chuck and the chuck are slightly misaligned, when the claw enters the trumpet-shaped guide area, the backing baffle of the chuck can automatically overlap with the chuck claw without external force, and the installation is very convenient. In practice, the diameter of the baffle is also improved and increased. Taking the chuck with a diameter of φ250 as an example, when the claw is just screwed into the claw groove 2 of the backing baffle of the chuck by the chuck wrench, it also quickly enters the trumpet guide area of ​​the backing claw groove 2, and the operation and installation are very convenient and quick.

Claims

1. A chuck backing baffle with adjustable positioning, comprising a baffle body, characterized in that: The baffle body is in the shape of a round cake, and is provided with a claw groove that expands to the periphery. The outer end of the claw groove is in the shape of a trumpet, and the bottom edge of the inner end is the bottom edge of the groove. The bottom edge of the groove is perpendicular to the two parallel sides of the claw groove and forms a right angle. A step pad is provided at the center position of one side of the baffle body, and a boss is provided at the center position of the other side. The center lines of the baffle body, the step pad and the boss are coaxial and are provided with a threaded through hole, and an adjusting screw is installed in the threaded through hole.

2. The adjustable positioning chuck backing baffle according to claim 1, characterized in that: The expansion angle of the center line of the bottom edge of the groove on the baffle body is 120°.

3. The adjustable positioning chuck backing baffle according to claim 1, characterized in that: The outer end of the adjusting screw is hexagonal.

4. The adjustable positioning chuck backing baffle according to claim 1, characterized in that: The groove width of the claw groove corresponds to and matches the width of the machine tool chuck claw.

5. The adjustable positioning chuck backing baffle according to claim 1, characterized in that: The diameter of the step pad matches the diameter of the inner hole of the machine tool chuck.

6. The adjustable positioning chuck backing baffle according to claim 1, characterized in that: The groove bodies of the step pad and the baffle body at the overlapped claw grooves are the same.

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