CN204053534U - For the bracing or strutting arrangement of oblique lathe bed type lathe in machining thin and long shafts part - Google Patents

Abstract

The utility model provides a supporting device for processing slender shaft parts on a slanted bed type numerical control lathe, comprising a fixed frame, a supporting rod and a sliding seat, the supporting rod is matched with the bottom of the fixed frame, and the sliding seat It fits with the support rod in clearance and can slide along the radial direction of the support rod. The sliding seat is provided with an adjustment screw perpendicular to the support rod, and the top end of the adjustment screw is provided with a support part for supporting the workpiece. , the top of the fixed frame is affixed with a live center, and the opposite side of the live center is provided with a three-jaw chuck for clamping the workpiece. The workpiece is clamped by the three-jaw chuck and the live center, and the support part is set in the radial direction of the workpiece to ensure the rigidity of the workpiece during the turning process; the use length of the support rod can be adjusted to adapt to workpieces with different axial lengths; adjustment and adjustment The height of the screw can be adapted to workpieces of different diameters; the structure of the device is simple, easy to use, and flexible to adjust.

Description

Supporting device for processing slender shaft parts with slanted bed CNC lathe

technical field

The utility model belongs to the field of cutting processing devices, in particular to a supporting device.

Background technique

The length-to-diameter ratio of slender shaft parts exceeds 20:1, and its excessively long shaft length leads to insufficient rigidity and difficulty in turning. In the turning process, it is easy to produce the phenomenon of tool give-up under the action of cutting force, causing the workpiece to bend and deform, and It is easy to generate vibration during turning, which affects the processing quality of the workpiece. When processing slender shafts on ordinary manual lathes and flat-bed CNC lathes, steady rests and tool rests are often used for auxiliary processing. Fix them on the lathe guide rail or pallet box, and use their supporting claws to support the surface of the workpiece to improve the rigidity of the workpiece and reduce the bending deformation of the workpiece during processing. However, the existing slanted bed type CNC lathes, due to structural limitations of the machine tools and fully enclosed guide rails of the machine tools, make it impossible to install a steady rest or a follower tool rest on this type of CNC lathes for turning of the slender axis. The utility model is exactly a set of auxiliary supporting device designed for this characteristic of the inclined bed type numerical control lathe.

Contents of the invention

The problem to be solved by the utility model is to provide a support device for processing slender shaft parts with a slanted bed CNC lathe, so as to avoid bending deformation during the turning process and improve the turning precision.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a supporting device for processing slender shaft parts on a slanted bed type CNC lathe, including a fixed frame, a supporting rod and a sliding seat, and the supporting rod and the described The bottom of the fixed frame is in clearance fit, and the sliding seat is in clearance fit with the support rod and can slide in the radial direction of the support rod. The sliding seat is provided with an adjustment screw perpendicular to the support rod, and the adjustment The top of the screw rod is provided with a supporting part for supporting the workpiece, the top of the fixed frame is fixed with a live center, and the opposite side of the live center is provided with a three-jaw chuck for clamping the workpiece, the live center and the The three-jaw chuck is coaxial and its axis is parallel to the support rod.

Wherein, the matching gap between the support rod and the fixing frame is 0.01 mm to 0.03 mm, and the two are locked by fastening bolts. Through the sliding of the support rod, the adjustment of its actual use length can be realized, so as to adapt to parts with different shaft lengths.

Wherein, the support part includes a roller bracket and two or more than two rollers, the roller bracket is fixed on the top of the adjusting screw, the roller is connected to the top of the roller bracket through a bearing, and the roller and the workpiece Tangent to the outer circumference. The roller not only plays the role of support, but also can rotate together with the workpiece, and will not hinder the rotation of the workpiece during the turning process.

Further, a plurality of sliding seats are provided on the supporting rod, each of which is equipped with an adjusting screw and a supporting part, and the sliding seats and the supporting rod are locked by locking bolts. The combination of multiple sliding seats and supporting parts can realize multi-point support of the workpiece, further ensuring the rigidity and turning accuracy of the workpiece during turning.

Wherein, the sliding seat is provided with a hole that is in clearance fit with the adjusting screw, and the adjusting screw can move up and down in the hole, and the two are locked by a locking bolt. Support for workpieces with different diameters can be achieved by controlling the height of the adjusting screw.

The advantages and positive effects that the utility model has are:

1. The workpiece is clamped by the three-jaw chuck and the live center, and the supporting part is set in the radial direction of the workpiece, which ensures the rigidity of the workpiece during the turning process and avoids its bending deformation;

2. The use length of the support rod is adjustable, so that it can adapt to workpieces with different shaft lengths. The applicable shaft length ranges from 50mm to 400mm.

3. The height of the adjusting screw is adjustable, so that it can adapt to workpieces with different diameters, and the applicable diameter range is Φ4mm～Φ30mm.

4. The device has the advantages of simple structure, convenient use and flexible adjustment.

Description of drawings

Fig. 1 is a structural representation of the utility model

Fig. 2 is a schematic sectional view of A-A of Fig. 1

Figure 3 is an enlarged view of part A in Figure 2

In the figure: 1- turning tool; 2- workpiece; 3- live top; 4- fixed frame; 5- tailstock sleeve; 6- three-jaw chuck; 7- roller; 8- roller bracket; 9- adjusting screw; 10-support rod; 11-sliding seat.

Detailed ways

Specific embodiments of the present utility model are described in detail below in conjunction with accompanying drawings.

As shown in Figure 1, the supporting device for machining slender shaft parts on an inclined bed type CNC lathe includes a fixed frame 4, a supporting rod 10 and a sliding seat 11, and the bottom of the supporting rod 10 and the fixed frame 4 Clearance fit, the sliding seat 11 is in clearance fit with the support rod 10 and can slide along the radial direction of the support rod 10, the sliding seat 11 is provided with an adjusting screw 9 perpendicular to the support rod 10, so The top of the adjusting screw 9 is provided with a supporting part for supporting the workpiece 2, the top of the fixed frame 4 is fixedly connected with a live center 3, and the opposite side of the live center 3 is provided with a three-jaw chuck for clamping the workpiece 2 6. The live center 3 is coaxial with the three-jaw chuck 6 and its axis is parallel to the support rod 10 .

The supporting part can adopt a variety of structural forms, as long as it can realize its supporting effect on the workpiece 2 without affecting the rotation of the workpiece 2, the utility model provides an embodiment as shown in Figure 3: the supporting part includes a roller bracket 8 and two or more than two rollers 7, preferably two rollers 7, the roller bracket 8 is fixed on the top of the adjusting screw 9, the roller 7 is connected to the top of the roller bracket 8 through a bearing, The roller 7 is tangent to the outer peripheral surface of the workpiece 2 . The roller 7 not only plays a supporting role in the turning process, but also can be passively rotated during the rotation of the workpiece 2 without hindering the rotation of the workpiece 2 .

In one embodiment of the present utility model, a plurality of sliding seats 11 are arranged on the supporting rod 10, and each sliding seat 11 is equipped with an adjusting screw 9 and a supporting part, and the sliding seat 11 and the supporting rod 10 are locked by locking bolts. . For parts with long axial length, multiple support parts can be used to support multiple points on the part to ensure the precision of part turning.

In order to adapt to slender shaft parts with different diameters, in one embodiment of the present utility model, the sliding seat 11 is provided with a hole that is in clearance fit with the adjusting screw 9, and the adjusting screw 9 can move up and down in the hole , the two are locked by locking bolts. For parts with large diameters, it is only necessary to lower the adjusting screw rod 9 until the roller 7 contacts the outer peripheral surface of the lower part of the workpiece, while for parts with small diameters, the adjusting screw rod 0 can be lowered. By controlling the position of the adjusting screw 0, it is possible to process parts with a diameter of Φ4mm～Φ30mm.

In order to adapt to slender shaft parts of different lengths, in one embodiment of the present utility model, two mounting holes are arranged on the fixed frame 4: the mounting hole at the bottom is used for installing the support rod 10, and the support rod 10 and the fixed frame 4 Clearance fit, the fit clearance is 0.01mm～0.03mm, and the two are locked by fastening bolts; the mounting hole on the top is set on the tailstock sleeve of the machine tool, and the clearance fit between the two is 0.01mm～0.03mm. The top 3 is fixed on the tailstock sleeve, and the fixed part of the live top 3 can be directly fixed on the fixed frame 4 for a machine tool without a sleeve on the tailstock.

The support rod 10 and the fixed frame 4 can slide relatively. For longer parts, the support rod 10 is pulled out to the outside of the fixing frame 4 and locked; while for shorter parts, the support rod 10 can be pushed into the inside of the fixing frame 4 and locked to save space . Parts with a length of 50 mm to 400 mm can be processed by adjusting the position of the support rod 10 .

When in use, clamp the workpiece 2 between the live center 3 and the three-jaw chuck 6, keep the workpiece 2 parallel to the support rod 10, adjust the relative position of the support rod 10 and the fixed frame 4 and adjust the height of the screw rod 9 to adapt to the workpiece The length and diameter of the adjusted support rod 10 and the fixed frame 4 are locked, and the adjustment screw 9 and the sliding seat 11 are locked; then the point on the workpiece 2 is selected as the supporting point, and the position of the sliding seat 11 is adjusted to the supporting point. , lock the sliding seat 11 and the support rod 10. The turning tool 1 performs turning at a position close to the support point.

For workpieces that need to be processed in sections, multiple sets of sliding seats 11, adjusting screw 9 and supporting parts are used to cooperate to distribute the supporting points evenly in the radial direction of the workpiece 2, and set supporting points at the processed outer circle, so as to Prevent the accuracy impact of the processed part on the unprocessed part.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (5)

1. A support device for machining slender shaft parts on a slanted bed type CNC lathe, characterized in that it includes a fixed frame (4), a support rod (10) and a sliding seat (11), and the support rod (10) Cooperate with the bottom of the fixed frame (4) clearance, the sliding seat (11) and the support rod (10) clearance fit and can slide along the radial direction of the support rod (10), the sliding seat ( 11) is provided with an adjustment screw (9) perpendicular to the support rod (10), the top of the adjustment screw (9) is provided with a support portion for supporting the workpiece (2), and the fixed frame (4) The top is fixed with a live center (3), and the opposite side of the live center (3) is provided with a three-jaw chuck (6) for clamping the workpiece (2), and the live center (3) and the three-jaw The chuck (6) is coaxial and its axis is parallel to the support rod (10). 2. The supporting device according to claim 1, characterized in that: the supporting part comprises a roller bracket (8) and two or more than two rollers (7), and the roller bracket (8) is fixed on the Adjust the top of the screw rod (9), the roller (7) is connected to the top of the roller bracket (8) through a bearing, and the roller (7) is tangent to the outer peripheral surface of the workpiece (2). 3. The support device according to claim 1, characterized in that: the support rod (10) is provided with a plurality of sliding seats (11), and each sliding seat (11) is equipped with an adjusting screw (9) and a supporting part, the sliding seat (11) and the support rod (10) are locked by locking bolts. 4. The supporting device according to claim 1, characterized in that: the sliding seat (11) is provided with a hole that is clearance fit with the adjusting screw (9), and the adjusting screw (9) can be inserted into the hole Moving up and down, the two are locked by locking bolts. 5. The supporting device according to claim 1, characterized in that: the matching gap between the supporting rod (10) and the fixing frame (4) is 0.01mm-0.03mm, and the two are locked by fastening bolts.