Overlength bar turning tool

Abstract

The super-long bar turning tool comprises a base, a sliding groove is formed in the base, a first lead screw is installed in the sliding groove in the length direction, the sliding groove is slidably connected with a support, the support is in threaded connection with the first lead screw, and a first motor for driving the first lead screw is fixed to the end of the base; a bracket is installed at the upper end of the support, a second lead screw is vertically installed in the support, the upper end of the second lead screw is in threaded connection with the lower portion of the bracket, a first bevel gear is fixed to the lower end of the second lead screw, a second bevel gear meshed with the first bevel gear is installed in the support, and a hand wheel is connected to the second bevel gear. A pair of rotating shafts is symmetrically installed on the two sides of the support, a pair of clamping plates is symmetrically fixed to the rotating shafts, a pair of gears meshed with each other is fixed to the ends of the rotating shafts, the gears are driven by a second motor fixed to the support to rotate oppositely, and therefore the rotating shafts drive the clamping plates to be opened and closed. The utility model aims to overcome the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of bar turning processing, in particular to a tool for turning an extra-long bar. Background Art

[0002] When the existing lathe performs bar turning processing, the chuck clamping and tailstock holding are generally used for clamping and completing the turning processing. When the length of the bar is greater than the maximum length that the lathe tailstock can hold, the tailstock cannot hold the bar, and the turning processing of the bar cannot be completed by chuck clamping alone. Utility Model Content

[0003] The utility model provides a super-long bar turning tool to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: an extra-long bar turning tool, comprising a base, a slide groove is provided on the base, a first screw is installed in the slide groove along the length direction, a support is slidably connected, and the support is threadedly connected to the first screw, and a first motor that drives the first screw is fixed at the end of the base; a bracket is installed at the upper end of the support, a second screw is vertically installed in the support, the upper end of the second screw is threadedly connected to the lower part of the bracket, and a first bevel gear is fixed at the lower end, a second bevel gear meshing with the first bevel gear is installed in the support, and a hand wheel is connected to the second bevel gear; a pair of rotating shafts are symmetrically installed on both sides of the support, a pair of clamping plates are symmetrically fixed on the pair of rotating shafts, and a pair of gears meshing with each other are fixed at the ends of the pair of rotating shafts, and the pair of gears are driven to rotate towards each other by the second motor fixed on the support, thereby driving the pair of clamping plates to open and close through the pair of rotating shafts.

[0005] The support is arranged in pair, and the first lead screw is provided with two sections of threads with opposite rotation directions, and the two sections of threads are respectively connected with a pair of support threads, and the first lead screw is driven by the first motor to make the pair of supports approach or move away from each other.

[0006] The pair of rotating shafts each include a fixed section and a telescopic section axially connected together, the fixed section and the telescopic section are symmetrically mounted on both sides of a pair of supports, and a pair of clamping plates are fixed on the fixed section and the telescopic section respectively. When the pair of supports approach or move away from each other, the fixed section and the telescopic section move accordingly.

[0007] The top of the bracket is an arc-shaped structure, and the opposite surfaces of the pair of clamping plates are provided with mutually symmetrical arc-shaped grooves.

[0008] A plurality of rollers are axially embedded in the arc-shaped structure and the arc-shaped groove, and the rollers protrude from the inner surfaces of the arc-shaped structure and the arc-shaped groove.

[0009] A connecting seat adapted to the lathe guide rail is fixed at the lower end of the base.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model expands the range of lathe processing bar length, realizes the clamping and turning of bars whose length is greater than the rated clamping length of the lathe, and thus improves the utilization rate of the machine tool.

[0012] 2. The utility model can adapt to the clamping of bars of different diameters and lengths by arranging two sets of supporting and clamping mechanisms with adjustable spacing.

[0013] 3. The utility model realizes the relative rotation between the bar and the tooling, reduces the friction between the bar and the tooling during turning, and prolongs the service life of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the connection structure between the support and the bracket of the utility model;

[0017] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-4 The utility model is described in detail with specific implementation modes.

[0019] A super-long bar turning tool comprises a base 1, wherein the base 1 is provided with a slide groove 1-1, wherein a first lead screw 4 is installed in the slide groove 1-1 along the length direction, and a support 2 is slidably connected thereto, and the support 2 is threadedly connected to the first lead screw 4, and a first motor 5 that drives the first lead screw 4 is fixed at the end of the base 1; a bracket 3 is installed at the upper end of the support 2, and a second lead screw 6 is vertically installed in the support 2, and the upper end of the second lead screw 6 is threadedly connected to the lower part of the bracket 3, and a first bevel gear 7 is fixed at the lower end, and a second bevel gear 8 that meshes with the first bevel gear 7 is installed in the support 2, and a hand wheel 9 is connected to the second bevel gear 8; a pair of rotating shafts 11 are symmetrically installed on both sides of the support 2, a pair of clamping plates 10 are symmetrically fixed on the pair of rotating shafts 11, and a pair of gears 13 that mesh with each other are fixed at the ends of the pair of rotating shafts 11, and the pair of gears 13 are driven to rotate in opposite directions by a second motor 12 fixed on the support 2, thereby driving the pair of clamping plates 10 to open and close through the pair of rotating shafts 11.

[0020] In one embodiment, the slide groove 1-1 is preferably an inverted T-shaped slide groove, and the support 2 is preferably an inverted T-shaped support adapted to the inverted T-shaped slide groove.

[0021] In one embodiment, in order to improve the clamping force and make the rotation more stable during bar turning, a pair of supports 2 are provided, and the first screw 4 is provided with two sections of threads with opposite rotation directions, and the two sections of threads are respectively threadedly connected to a pair of supports 2, and the first motor 5 drives the first screw 4 to make the pair of supports 2 approach or move away from each other. The pair of rotating shafts 11 each include a fixed section and a telescopic section axially connected together, and the fixed section and the telescopic section are symmetrically installed on both sides of the pair of supports 2, and a pair of clamping plates 10 are respectively fixed on the fixed section and the telescopic section, and when the pair of supports 2 approach or move away from each other, the fixed section and the telescopic section follow the movement.

[0022] Furthermore, the top of the bracket 3 is an arc-shaped structure 3 - 1 , and the opposite surfaces of the pair of clamps 10 have mutually symmetrical arc-shaped grooves 10 - 1 .

[0023] In order to realize the relative rotation between the bar and the tooling, reduce the friction between the bar and the tooling during turning, reduce the wear of the bracket 3 and the clamping plate 10, and extend the service life of the tooling, a plurality of rollers 15 are axially embedded in the arc structure 3-1 and the arc groove 10-1, and the rollers 15 protrude from the inner surfaces of the arc structure 3-1 and the arc groove 10-1.

[0024] In order to adapt to the lathe, a connecting seat 14 adapted to the lathe guide rail is fixed to the lower end of the base 1 .

[0025] When in use, the tailstock of the lathe is removed, and the tooling is installed at the tailstock position of the lathe through the connecting seat 14 and fixed to the lathe bed. First, according to the length and diameter of the extra-long bar, the spacing between a pair of supports 2 is adjusted by the first motor 5, and the height of the bracket 3 is adjusted by the hand wheel 9. Then, one end of the extra-long bar is clamped by the chuck and the other end is placed in the arc structure 3-1 at the top of the bracket 3. The second motor 12 is started to close the two pairs of clamps 10, and the other end of the extra-long bar is clamped by the arc groove 10-1 to complete the clamping of the extra-long bar.

[0026] The utility model expands the range of the length of the bar material processed by the lathe, realizes the clamping and turning of the bar material whose length is greater than the rated clamping length of the lathe, and further improves the utilization rate of the machine tool.

[0027] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A tool for turning an extra-long bar, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a slide groove (1-1), wherein a first lead screw (4) is arranged in the slide groove (1-1) along the length direction, and a support (2) is slidably connected thereto, and the support (2) is threadedly connected to the first lead screw (4), and a first motor (5) for driving the first lead screw (4) is fixed at the end of the base (1); a bracket (3) is arranged at the upper end of the support (2), and a second lead screw (6) is vertically arranged in the support (2), and the upper end of the second lead screw (6) is threadedly connected to the lower part of the bracket (3), and a first bevel gear (7) is fixed at the lower end, and the The support (2) is provided with a second bevel gear (8) meshing with the first bevel gear (7), and the second bevel gear (8) is connected with a hand wheel (9); a pair of rotating shafts (11) are symmetrically provided on both sides of the support (2), a pair of clamping plates (10) are symmetrically fixed on the pair of rotating shafts (11), and a pair of gears (13) meshing with each other are fixed at the ends of the pair of rotating shafts (11), and the pair of gears (13) are driven to rotate in opposite directions by a second motor (12) fixed on the support (2), thereby driving the pair of clamping plates (10) to open and close through the pair of rotating shafts (11).

2. The ultra-long bar turning tool according to claim 1 is characterized in that: The support (2) is provided in pair, and the first lead screw (4) is provided with two sections of threads with opposite rotation directions, and the two sections of threads are respectively threadedly connected to the pair of supports (2), and the first lead screw (4) is driven by the first motor (5) to make the pair of supports (2) approach or move away from each other.

3. The ultra-long bar turning tool according to claim 2, characterized in that: The pair of rotating shafts (11) each comprises a fixed section and a telescopic section axially connected together, the fixed section and the telescopic section are symmetrically mounted on both sides of a pair of supports (2), and a pair of clamping plates (10) are fixed on the fixed section and the telescopic section respectively. When the pair of supports (2) approach or move away from each other, the fixed section and the telescopic section move accordingly.

4. The ultra-long bar turning tool according to claim 1, 2 or 3, characterized in that: The top of the bracket (3) is an arc-shaped structure (3-1), and the opposite surfaces of the pair of clamping plates (10) are provided with mutually symmetrical arc-shaped grooves (10-1).

5. The ultra-long bar turning tool according to claim 4 is characterized in that: A plurality of rollers (15) are axially embedded in the arc-shaped structure (3-1) and the arc-shaped groove (10-1), and the rollers (15) protrude from the inner surfaces of the arc-shaped structure (3-1) and the arc-shaped groove (10-1).

6. The ultra-long bar turning tool according to claim 1, characterized in that: A connecting seat (14) adapted to the lathe guide rail is fixed at the lower end of the base (1).

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