Auxiliary supporting device for lower section of bar lathe

Abstract

The invention discloses an auxiliary supporting device for the lower section of a bar lathe, and relates to the field of lathe machining, the auxiliary supporting device comprises a weight box, a main body supporting frame and a material supporting seat, the weight box is placed on a bottom plate of the main body supporting frame, and a first stand column and a second stand column are symmetrically arranged on the left side and the right side of the rear end of the bottom plate; a fixing plate and a material supporting seat are arranged between the first stand column and the second stand column, a lifting mechanism is arranged on the fixing plate, and the material supporting seat is connected with the upper end of the lifting mechanism. The auxiliary supporting device can effectively restrain large-amplitude rotating and swinging of the extending end of the bar when the bar is in the lower section of the lathe, the supporting height is adjustable, and the auxiliary supporting device can be suitable for machining of lathes of different models and bars of different diameter specifications.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lathe machining, more particularly to an auxiliary supporting device for a lower section of a bar lathe. BACKGROUND

[0002] Bar is a common product in the field of metal metallurgy, and the sizing lower section is an indispensable process link in the process of bar from blank to finished product. Common sizing lower section methods of bar include flying shear, gas cutting, plasma cutting, circular saw machine, band saw machine, lathe, etc. The lathe cutting lower section method has the advantages of universal equipment, low operation requirement, and fast speed, and is widely used in occasions with low precision requirement.

[0003] When cutting the lower section of round bar materials, the bar is often long, and needs to be inserted from the main shaft hole of the lathe headstock and clamped by a three-jaw chuck before cutting. The following problems exist in the machining process: 1. The outer extension part of the bar from the main shaft hole of the lathe headstock is long, much larger than the distance between the lathe tool and the three-jaw chuck, and is a cantilever structure. At the same time, the axis of the bar is not a straight line in the strict sense, and has a bending deviation. During the high-speed rotation of the three-jaw chuck, the outer extension end of the bar swings greatly, affecting the normal production process and posing a safety hazard. 2. If the swing phenomenon is not inhibited, the bar will collide and rub with the main shaft hole of the lathe headstock, causing defects such as pits and scratches on the surface of the bar, and even causing the material to be scrapped, resulting in economic losses. In addition, the periodic centrifugal moment generated when the outer extension end of the bar swings will affect the precision and service life of the lathe. Therefore, it is necessary to add a bar auxiliary supporting device outside the lathe headstock to ensure the cutting of the lower section. The existing auxiliary supporting device has the following disadvantages in the use of cutting the lower section: 1. The structure is complex, and elastic components such as springs are arranged around the bar in the circumferential direction to constrain the swing phenomenon of the bar. However, the constraint ability of the elastic components is limited under strong cutting force due to the elastic buffering, which easily causes micro-displacement of the bar, resulting in errors in the processing of the bar, poor use effect, and easy damage, with high maintenance and replacement cost. 2. It does not have the ability to adjust the height for different types of lathes, and has poor equipment adaptability. 3. It cannot adapt to the change of the diameter of the bar, and the height of the supporting position will change accordingly when the diameter of the bar changes. SUMMARY

[0004] The present application aims to provide an auxiliary supporting device for a lower section of a bar lathe to solve the problems of errors in the processing of the bar caused by elastic buffering, and the inability to adjust the height and adapt to different types of lathes and bar specifications in the background art.

[0005] In view of the defects in the prior art, the present application achieves the above objectives by adopting the following specific technical solutions: The application provides a kind of auxiliary support device for bar lathe lower section, including counterweight box, main body support frame and material support seat, characterized by: the counterweight box is placed on the bottom plate of main body support frame, first column and second column are symmetrically arranged on the left and right sides of the rear end of the bottom plate, fixed plate and material support seat are arranged between the first column and the second column, lifting mechanism is arranged on the fixed plate, and the upper end of the material support seat is connected with the lifting mechanism.

[0006] Further, the first column and the second column are "C" type in cross section, and auxiliary lifting lugs are fixed on the outside.

[0007] Further, the lifting mechanism includes first worm gear screw lifter and second worm gear screw lifter, the first worm gear screw lifter and the second worm gear screw lifter are arranged on the fixed plate, the upper end of the first worm gear screw lifter and the second worm gear screw lifter is fixedly connected with the bottom of the material support seat through flange plate, and bevel gear reverser is arranged between the first worm gear screw lifter and the second worm gear screw lifter.

[0008] Further, the material support seat includes support seat base, fastening shafts are arranged at both ends of the support seat base, guide grooves are formed in the first column and the second column from top to bottom, and the fastening shafts at both ends of the support seat base are matched with the guide grooves in the first column and the second column.

[0009] Further, the guide grooves are preferably U-shaped grooves.

[0010] Further, a circular arc groove is arranged at the middle position of the support seat base, nylon flat plate and nylon arc-shaped plate are fixed on the upper surface of the circular arc groove, and wear-resistant fiber layer is covered on the upper surface of the nylon flat plate and the nylon arc-shaped plate.

[0011] Further, threads are arranged on the fastening shafts to connect handwheel type nuts, and the handwheel type nuts are screwed into the outside of the first column and the second column through threaded parts.

[0012] Further, the bevel gear reverser is connected with the first worm gear screw lifter and the second worm gear screw lifter through shaft coupling.

[0013] Further, a fixed groove is formed in the middle position of the fixed plate, the bevel gear reverser is fixed in the fixed groove, and keyway hole type handwheel is connected with the front shaft of the bevel gear reverser.

[0014] Further, a protective cover is arranged on the upper part of the fixed plate, and the vertical screw rods at the lower ends of the first worm gear screw lifter and the second worm gear screw lifter pass through the protective cover and the fixed plate in sequence.

[0015] Further, the counterweight box comprises a box body, sand and a lifting ring, the bottom of the box body is in contact with the bottom plate, the inside is filled with sand, and the lifting ring is fixed to the middle positions of the two sides of the top.

[0016] Compared with the prior art, the technical scheme provided by the application has the following beneficial effects: (1) The auxiliary supporting device for the lower section of the bar lathe disclosed by the application is provided with a lifting mechanism on the fixed plate, a material supporting seat is fixedly connected above the lifting mechanism, a U-shaped guide groove is formed in the stand column, the fastening shaft of the material supporting seat is matched with the U-shaped guide groove, the height of the material supporting seat in the vertical direction can be adjusted, and thus the supporting height can be changed when different models of processing lathes and different specifications of materials are used.

[0017] (2) In the application, the circular arc groove in the middle of the material supporting seat can wrap the bar material in the circumferential direction to a certain extent, the contact area between the bar material and the material supporting seat is increased, and the bar material is stably supported.

[0018] (3) In the application, a nylon plate is arranged on the upper surface of the material supporting seat, and a wear-resistant fiber layer is covered on the nylon plate to protect the material from being damaged and increase the service life of the device, and the wear is easy to replace, and the counterweight box is placed on the front side of the bottom plate of the main supporting frame to ensure the stability of the whole device during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into the specification and constitute part of the specification, together with the specification, serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical schemes in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a main view of the structure of the application; Figure 2 It is a left view of the structure of the application; Figure 3 It is a top view of the structure of the application; Figure 4 It is a main view of the main supporting frame; Figure 5 It is an axial side view of the main supporting frame; Figure 6 It is a left view of the main supporting frame; Figure 7 It is a top view of the main supporting frame; Figure 8 It is a main view of the material supporting seat; Figure 9 Figure 3 is an axial view of the material support seat; Figure 10 Figure 4 is an axial view of the front protective cover; Figure 11 Figure 5 is an axial view of the rear protective cover; Figure 12 Figure 6 is a top view of the rear protective cover; Figure 13 Figure 7 is an axial view of the counterweight box; Figure 14 Figure 8 is a sectional view of the counterweight box; Figure 15 Figure 9 is a perspective view of the entire structure of the present application; Figure 1 is a counterweight box; Figure 2 is a main body support frame; Figure 3 is a material support seat; Figure 4 is a bevel gear reverser; Figure 5 is a keyway hole type hand wheel; Figure 6 is a coupling; Figure 7 is a first worm gear screw rod elevator; Figure 8 is a second worm gear screw rod elevator; Figure 9 is a front protective cover; Figure 10 is a rear protective cover; Figure 11 is a box body; Figure 12 is a sandstone; Figure 13 is a lifting ring; Figure 20 is a first stand; Figure 21 is a second stand; Figure 22 is a fixed plate; Figure 23 is an auxiliary lifting lug; Figure 24 is a bottom plate; Figure 25 is a hand wheel type nut; Figure 211 is a guide groove; Figure 221 is a protective cover fixing screw hole; Figure 222 is an elevator fixing screw hole; Figure 223 is a through hole; Figure 224 is a reverser fixing screw hole; Figure 225 is a reverser bottom fixing groove; Figure 31 is a support seat base; Figure 32 is a fastening shaft; Figure 33 is a nylon flat plate; Figure 34 is a nylon arc-shaped plate; Figure 35 is a flange plate connecting hole; Figure 321 is a thread; Figure 41 is a front fixed hole; Figure 42 is a front semicircular cutout; Figure 43 is a reverser shaft passing hole; Figure 51 is a rear semicircular cutout; and Figure 52 is a rear fixed hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Referring to Figures 1-6 The present application provides an auxiliary supporting device for a lower section of a bar lathe, which comprises a counterweight box 1, a main body support frame 2 and a material support seat 3. The counterweight box 1 is placed on the bottom plate 24 of the main body support frame 2 to ensure the stability of the entire device during use. First stands 20 and second stands 21 are symmetrically arranged on the left and right sides of the rear end of the bottom plate 24. A fixed plate 22 and a material support seat 3 are arranged between the first stands 20 and the second stands 21. An elevator mechanism is arranged on the fixed plate 22, and the material support seat 3 is connected to the upper end of the elevator mechanism.

[0024] In the above embodiment, the lifting mechanism comprises a first worm screw lifter 7 and a second worm screw lifter 8, which are arranged on the fixed plate 22 at intervals, and the upper ends of the first worm screw lifter 7 and the second worm screw lifter 8 are fixedly connected with the bottom of the material support seat 3 through flanges, and a bevel gear reversing device 4 is arranged between the first worm screw lifter 7 and the second worm screw lifter 8.

[0025] In the above embodiment, the bevel gear reversing device 4 is connected with the first worm screw lifter 7 and the second worm screw lifter 8 through the shaft coupling 6, so as to achieve the purpose of synchronous operation of the first worm screw lifter 7 and the second worm screw lifter 8.

[0026] In the above embodiment, a fixed groove 225 is formed in the middle of the fixed plate 22, and a reversing device fixing screw hole 224 is formed in the bottom of the fixed groove 225, the bevel gear reversing device 4 is fixed in the fixed groove 225 through the reversing device fixing screw hole 224, and a key groove type hand wheel 5 is connected with the front extension shaft of the bevel gear reversing device 4 through a key. When the key groove type hand wheel 5 is rotated, the first worm screw lifter 7 and the second worm screw lifter 8 can be synchronously moved up and down.

[0027] In the above embodiment, the first vertical column 20 and the second vertical column 21 are of a "C" type in cross section, and form a three-sided wrapping structure for the material support seat 3, so that the material support seat 3 is more stable and convenient to move up and down, an auxiliary lifting lug 23 is fixed on the outer side, and a guide groove 211 is formed from top to bottom at the upper end.

[0028] In the above embodiment, the guide groove 211 is preferably a U-shaped groove, which is convenient for the installation or replacement of the material support seat.

[0029] Reference Figure 8 The material support seat 3 comprises a support seat base 31, fastening shafts 32 are fixed on the two sides of the support seat base 31, threads 321 are arranged on the fastening shafts 32, and the fastening shafts 32 are led out from the guide groove 211. A hand wheel type nut 25 is partially screwed into the fastening shafts 32 and tightly abuts the outer sides of the first vertical column 20 and the second vertical column 21.

[0030] In the above embodiment, a circular arc groove is arranged in the middle of the support seat base 31 to place and support the bar material, a nylon flat plate 33 and a nylon arc plate 34 are fixed on the upper surface of the support seat base 31, and a wear-resistant fiber layer is covered on the upper surfaces of the nylon flat plate 33 and the nylon arc plate 34, so as to increase the service life, prevent the surface of the processed material from being damaged, and facilitate replacement and maintenance.

[0031] Reference Figure 9In the above embodiment, the support seat base 31 is provided with a flange connecting hole 35, and the material support seat 3 is connected with the flanges at the top of the first and second worm screw elevators 7 and 8 through the flange connecting hole 35 at the bottom.

[0032] Reference Figures 10-12 To ensure the operation safety of the lifting mechanism of the device, and considering the convenience during installation and disassembly, a front guard cover 9 and a rear guard cover 10 are fixedly arranged on the front and rear sides of the fixed plate 22, and the front and rear guard covers 9 and 10 include a guard horizontal plate, a guard vertical plate and a connecting plate, one side of the guard horizontal plate is fixedly connected with the upper end of the guard vertical plate, the lower end of the guard vertical plate is fixedly connected with one side of the connecting plate, and the connecting plate is provided with a fixing hole.

[0033] In the above embodiment, the lower end of the connecting plate of the front and rear guard covers 9 and 10 is connected with the upper end of the front and rear sides of the fixed plate 22.

[0034] In the above embodiment, the front guard cover 9 is provided with a front semicircular cutout 42 on the guard horizontal plate, and a bevel gear shaft through hole 43 is arranged on the guard vertical plate, the rear guard cover 10 is provided with a rear semicircular cutout 51 matched with the front semicircular cutout 42 on the guard horizontal plate, the vertical screw rods of the first and second worm screw elevators 7 and 8 are inserted through the circular hole formed by the front semicircular cutout 42 and the rear semicircular cutout 51, and the front extension shaft of the bevel gear bevel gear 4 is inserted through the bevel gear shaft through hole 43 and connected with the key groove hole type hand wheel 5.

[0035] Reference Figure 7 In the above embodiment, the fixed plate 22 is symmetrically provided with a guard cover fixing screw hole 221, an elevator fixing screw hole 222 and a through hole 223 on both sides, which are used for the installation and fixation of the first and second worm screw elevators 7 and 8, the front and rear guard covers 9 and 10.

[0036] Reference Figure 13 , Figure 14 The counterweight box 1 includes a box body 11, sand and gravel 12 and lifting rings 13, the bottom of the box body 11 is in contact with the bottom plate 24, the inside is filled with the sand and gravel 12, and the lifting rings 13 are arranged at the top of the two sides and the central positions of the front and rear sides for the convenience of hoisting.

[0037] Working principle and use process of the application: The application is an auxiliary support device for the lower section of a bar lathe, like Figures 1-14As shown, rotating the key slot hole type hand wheel 5 lowers the material support seat 3, which is adjusted to the lowest position. In use, the machining bar cutting section is clamped by the lathe three-jaw chuck, and the other end passes through the lathe headstock spindle hole, and then extends along the central position between the first column 20 and the second column 21, suspended on the upper end of the circular arc groove on the material support seat base surface. Loosen the hand wheel type nut 25 outside the first column 20 and the second column 21, and adjust the material support seat 3 to move vertically upward along the guide groove 211 of the first column 20 and the second column 21 by rotating the key slot hole type hand wheel 5, until the bar is fitted with the circular arc groove in the middle of the support seat base 31, and the hand wheel type nut 25 is locked. Turn the lathe to cut the lower section of the bar. If the bar specification is changed, only the adjustment process needs to be repeated.

[0038] In the above embodiments, the circular arc groove can also be replaced by a V-shaped groove. The bar size is preferably Φ20-100mm, and the circular arc groove size is preferably Φ100mm.

[0039] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0040] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An auxiliary support device for the lower section of a bar lathe, characterized in that, The system includes a counterweight box (1), a main support frame (2), and a material support seat (3). The counterweight box (1) is placed on the base plate (24) of the main support frame (2). A first column (20) and a second column (21) are symmetrically arranged on the left and right sides of the rear end of the base plate (24). A fixing plate (22) and a material support seat (3) are arranged between the first column (20) and the second column (21). A lifting mechanism is provided on the fixing plate (22). The material support seat (3) is connected to the upper end of the lifting mechanism.

2. The auxiliary support device for the lower section of a bar lathe according to claim 1, characterized in that, The first column (20) and the second column (21) have a "C" shaped cross section and are fixed with auxiliary lifting lugs (23) on the outside.

3. The auxiliary support device for the lower section of a bar lathe according to claim 1, characterized in that, The lifting mechanism includes a first worm gear screw jack (7) and a second worm gear screw jack (8). The first worm gear screw jack (7) and the second worm gear screw jack (8) are spaced apart on the fixed plate (22). The upper ends of the first worm gear screw jack (7) and the second worm gear screw jack (8) are respectively fixedly connected to the bottom of the material support seat (3). A bevel gear reversing device (4) is provided between the first worm gear screw jack (7) and the second worm gear screw jack (8).

4. The auxiliary support device for the lower section of a bar lathe according to claim 1, characterized in that, The material support base (3) includes a support base (31), and fastening shafts (32) are respectively provided at both ends of the support base (31). Guide grooves (211) are correspondingly opened on the first column (20) and the second column (21). The fastening shafts (32) at both ends of the support base (31) cooperate with the guide grooves (211) on the first column (20) and the second column (21), respectively.

5. An auxiliary support device for the lower section of a bar lathe according to claim 4, characterized in that, The guide groove (211) is a U-shaped groove.

6. The auxiliary support device for the lower section of a bar lathe according to claim 4, characterized in that, The support base (31) has an arc groove in the middle. A nylon flat plate (33) and a nylon arc plate (34) are fixed on the upper surface of the support base (31). The upper surfaces of the nylon flat plate (33) and the nylon arc plate (34) are covered with a wear-resistant fiber layer.

7. An auxiliary support device for the lower section of a bar lathe according to claim 4, characterized in that, The fastening shaft (32) is provided with a thread (321), and the handwheel nut (25) is screwed into the thread (321) and closely attached to the outside of the first column (20) and the second column (21).

8. An auxiliary support device for the lower section of a bar lathe according to claim 3, characterized in that, The bevel gear commutator (4) is connected to the first worm gear screw jack (7) and the bevel gear commutator (4) is connected to the second worm gear screw jack (8) via a coupling (6).

9. An auxiliary support device for the lower section of a bar lathe according to claim 3, characterized in that, A fixing groove (225) is provided in the middle of the fixing plate (22), and the bevel gear commutator (4) is fixed in the fixing groove (225). A keyway hole type handwheel (5) is connected to the front extension shaft of the bevel gear commutator (4).

10. An auxiliary support device for the lower section of a bar lathe according to claim 3, characterized in that, A protective cover is provided on the upper part of the fixed plate (22), and the lower ends of the vertical screws of the first worm gear screw jack (7) and the second worm gear screw jack (8) pass through the protective cover and the fixed plate (22) in sequence.

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