Lathe positioner for long shaft machining

Abstract

The utility model relates to the technical field of lathe parts, in particular to a lathe positioner for machining a long shaft, which comprises a long shaft part, positioning components are symmetrically mounted outside the long shaft part, each positioning component comprises a central ring, three threaded sleeves are mounted on the thin wall of each central ring, and the threaded sleeves are sleeved on the central rings. The three threaded sleeves are installed in the peripheral direction of the center ring at equal angles, and the axis lines of the three threaded sleeves intersect with the center point of the center ring. The positioning assemblies are fixedly installed under the mutual cooperation of the supporting rod, the vertical support and the supporting bottom plate, the extrusion end points of the three clamping assemblies coincide with the midpoint of the center ring, and the midpoint is located on the center line of the long shaft piece, so that the long shaft piece can be supported through the mutual cooperation of the positioning assemblies; and therefore, the possibility that the center of gravity shifts in the process that the long shaft rotates along with the chuck is reduced, the structural rationality of the device is improved, and the turning quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe parts, in particular to a lathe positioner for long-axis processing. Background Art

[0002] A lathe is a machine tool that mainly uses a turning tool to turn a rotating workpiece. It is the most important type of metal cutting machine tool. In general machine manufacturing factories, lathes are the most numerous and are also called machine tools. Drills, reamer drills, reamers, taps, dies and knurling tools can also be used on lathes for corresponding processing. The function of a lathe is to cut rotating surfaces of various sizes and shapes, as well as spiral surfaces.

[0003] When a long-axis part is turned on a lathe, the chuck clamps and fixes one end of the long-axis part. The center of gravity of the long-axis part is mostly located in the center of the part. The clamping of the chuck cannot fix the center of gravity of the long-axis part. Therefore, the center of gravity of the long-axis part may shift during the process of following the rotation of the chuck, which affects the turning quality. In view of the above problem, a lathe positioner for long-axis processing is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and solve the problem of clamping and fixing one end of a long shaft part by a chuck, the center of gravity of the long shaft part is mostly located in the center of the part, and the clamping of the chuck cannot fix the center of gravity of the long shaft part. Therefore, the center of gravity of the long shaft part may shift during the process of following the rotation of the chuck, which will affect the turning quality. A lathe positioner for long shaft processing is proposed.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a lathe positioner for long axis processing, comprising a long axis part, a positioning assembly symmetrically installed on the outside of the long axis part, the positioning assembly comprising a center ring, three threaded sleeves installed on the thin wall of the center ring, the three threaded sleeves are installed at equally divided angles along the outer peripheral direction of the center ring, the axis lines of the three threaded sleeves intersect with the center point of the center ring, and clamping assemblies are installed inside the three threaded sleeves, and the three clamping assemblies are respectively squeezed against the outer wall of the long axis part, and support rods are symmetrically fixed to the outer periphery of the center ring, the axes of the two support rods are colinear, one end of the two support rods are fixed to a vertical bracket, and one end of the vertical bracket is fixed to a supporting base plate, and two telescopic sleeves are arranged between the two positioning assemblies, and one end of the two telescopic sleeves is respectively vertically fixed to the adjacent side walls of the vertical brackets on both sides.

[0006] Preferably, the clamping assembly includes an extrusion screw rod, which is threadedly installed inside a threaded sleeve, one end of the extrusion screw rod is equipped with an extrusion roller through a bearing, the extrusion roller is located inside a center ring, a strip groove is provided on the outer wall of the extrusion screw rod, and one end of the external threaded sleeve of the center ring is fixedly connected to a first lifting ring.

[0007] Preferably, the outer wall sliding sleeve of the extrusion screw rod is provided with a hollow gear, the bottom surface of the hollow gear is fixedly connected with a second lifting ring, the second lifting ring and the first lifting ring are mutually engaged, and the interior of the hollow gear is fixedly connected with a fitting convex strip, and the fitting convex strip is slidably installed between the inner walls of the strip groove.

[0008] Preferably, the side walls of the two center rings facing away from each other are both equipped with gear rings through circular ring clamps, and the adjacent side walls of the two gear rings are fixedly connected with tooth rings, and the tooth rings on both sides are respectively meshed with the hollow gears on both sides.

[0009] Preferably, a motor is mounted on the top surface of the two supporting base plates via a bracket, an output shaft of the motor is fixedly connected with an output gear, and the two output gears are respectively meshed with two gear rings.

[0010] Preferably, the outer wall of the center ring is provided with three through holes, the three through holes are respectively located on one side of the three threaded sleeves, and the axes of the three through holes are respectively parallel to the axes of the three threaded sleeves.

[0011] Preferably, a guide rod is fixedly connected to one side of the extrusion roller via a bracket, and an outer wall of the guide rod is slidably mounted on an inner wall of the through hole.

[0012] Beneficial effects of the utility model:

[0013] 1. In the utility model, after one end of the long axis part is clamped with the lathe chuck, the positioning assembly mounted on the outer wall can adjust its position relative to the long axis part by sliding, and the center of gravity of the long axis part is included between the two positioning assemblies, and the positioning assembly is fixedly installed under the mutual cooperation between the support rod, the vertical bracket and the support base plate, and the extrusion end points of the three clamping assemblies coincide with the midpoint of the center ring, and the midpoint is located on the center line of the long axis part, which makes the mutual cooperation between the positioning assemblies able to support the long axis part, thereby reducing the possibility of the center of gravity shifting during the rotation of the long axis part following the chuck, increasing the rationality of the device structure, and ensuring the turning quality.

[0014] 2. In the utility model, through the mutual cooperation between the gear ring, the tooth ring, the hollow gear, the threaded sleeve and the extrusion screw, the three extrusion screws can rotate synchronously during the rotation of the gear ring, and drive the extrusion roller and the outer wall of the long shaft to be extruded against each other, so as to realize the extrusion and fixation of the long shaft by the device. The operation steps of controlling the extrusion roller to extrude the outer wall of the long shaft are reduced by the rotation linkage of the extrusion screw, thereby increasing the rationality of the device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the support rod in the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the center ring in the utility model;

[0019] Figure 4 It is a stereoscopic diagram of the matching of the gear ring, the hollow gear and the output gear in the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the extruded screw and the hollow gear in the utility model;

[0021] Legend:

[0022] 1. Long shaft; 2. Positioning assembly; 21. Center ring; 211. Threaded sleeve; 3. Clamping assembly; 4. Support rod; 41. Vertical bracket; 42. Support base plate; 5. Telescopic sleeve; 31. Extrusion screw rod; 32. Extrusion roller; 33. Strip groove; 212. First lifting ring; 34. Hollow gear; 341. Second lifting ring; 342. Fitting convex strip; 6. Gear ring; 61. Tooth ring; 7. Motor; 71. Output gear; 213. Through hole; 321. Guide rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] See also Figure 1 - Figure 5 The utility model provides a lathe positioner for long axis processing, including a long axis part 1, a positioning assembly 2 is symmetrically installed on the outside of the long axis part 1, the positioning assembly 2 includes a center ring 21, three threaded sleeves 211 are installed on the thin wall of the center ring 21, the three threaded sleeves 211 are installed along the outer peripheral direction of the center ring 21 at equally divided angles, the axis lines of the three threaded sleeves 211 intersect with the center point of the center ring 21, the insides of the three threaded sleeves 211 are all installed with clamping assemblies 3, the three clamping assemblies 3 are respectively pressed against the outer wall of the long axis part 1, the outer periphery of the center ring 21 is symmetrically fixed with support rods 4, the axes of the two support rods 4 are collinear, one end of the two support rods 4 is fixed with a vertical bracket 41, one end of the vertical bracket 41 is fixed with a support base plate 42, and the two positioning assemblies 2, two telescopic sleeves 5 are arranged between them, one end of the two telescopic sleeves 5 is respectively vertically fixed to the adjacent side walls of the vertical brackets 41 on both sides, the positioning components 2 on both sides cooperate with the support rods 4, the vertical brackets 41 and the supporting bottom plate 42, and when the support rods 4 and the lathe bed are fixed to each other, the relative position of the center ring 21 is fixed, and when the vertical brackets 41 are not fixed to the bed, the relative spacing between the positioning components 2 on both sides can be changed within a certain range, wherein the telescopic sleeves 5 can ensure that the center points of the two center rings 21 can always be on the same straight line without hindering the mutual spacing between the positioning components 2, thereby increasing the rationality of the device structure, the center ring 21 is installed on the clamping component 3 through the threaded sleeve 211, and the clamping component 3 extrude and limit the long axis member 1;

[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the clamping assembly 3 includes an extrusion screw rod 31, which is threadedly installed inside the threaded sleeve 211, and an extrusion roller 32 is installed at one end of the extrusion screw rod 31 through a bearing. The extrusion roller 32 is located inside the center ring 21, and a strip groove 33 is opened on the outer wall of the extrusion screw rod 31. One end of the threaded sleeve 211 outside the center ring 21 is fixedly connected with a first lifting ring 212. When the extrusion screw rod 31 is rotated, its relative position with the threaded sleeve 211 is changed, thereby changing the relative distance between the extrusion roller 32, and the strip groove 33 and the first lifting ring 212 are respectively installed on the extrusion screw rod 31 and the threaded sleeve 211 to install the structure for controlling the rotation of the extrusion screw rod 31;

[0027] like Figure 3 , Figure 4 and Figure 5As shown, the outer wall of the extrusion screw rod 31 is slidably sleeved with a hollow gear 34, the bottom surface of the hollow gear 34 is fixedly connected with a second lifting ring 341, the second lifting ring 341 and the first lifting ring 212 are mutually engaged, and the inside of the hollow gear 34 is fixedly connected with a fitting convex strip 342, which is slidably installed between the inner walls of the strip groove 33. The hollow gear 34 is mutually engaged with the first lifting ring 212 through the second lifting ring 341 and the threaded sleeve 211, and is mutually engaged with the strip groove 33 through the fitting convex strip 342, so that when the hollow gear 34 is rotated, the extrusion screw rod 31 can rotate as a whole, thereby controlling the relative position of the extrusion roller 32;

[0028] like Figure 1 , Figure 4 and Figure 5 As shown, the two center rings 21 have gear rings 6 mounted on their opposite side walls through circular ring clamps, and the adjacent side walls of the two gear rings 6 are fixedly connected with toothed rings 61, and the toothed rings 61 on both sides are respectively meshed with the hollow gears 34 on both sides, wherein the top surfaces of the two supporting bottom plates 42 are mounted with motors 7 through brackets, and the output shaft of the motor 7 is fixedly connected with an output gear 71, and the two output gears 71 are respectively meshed with the two gear rings 6, and the gear ring 6 is mounted on one side of the center ring 21, and is meshed with the three hollow gears 34 through the toothed rings 61, and when the gear ring 6 is rotated, the three extrusion screws 31 can rotate synchronously to realize the extrusion limitation of the long shaft member 1, and the motor 7 provides a rotational output force for the gear ring 6 through the mutual internal meshing between the output gear 71 and the gear ring 6;

[0029] like Figure 1 , Figure 3 and Figure 5 As shown, the outer wall of the center ring 21 is provided with three through holes 213, and the three through holes 213 are respectively located on one side of the three threaded sleeves 211, and the axes of the three through holes 213 are respectively parallel to the axes of the three threaded sleeves 211, and a guide rod 321 is fixedly connected to one side of the extrusion roller 32 through a bracket, and the outer wall of the guide rod 321 is slidably installed on the inner wall of the through hole 213. The center ring 21 limits the relative position of the extrusion roller 32 by the guide rod 321 penetrating the through hole 213, so that the upper track can maintain a state of being tangent to the outer wall of the long shaft member 1, so that when the clamping assembly 3 extrudes and limits the outer wall of the long shaft member 1, the rotation direction of the extrusion roller 32 on it coincides with the rotation direction of the long shaft member 1;

[0030] Working principle: The positioning components 2 on both sides cooperate with the support rod 4, the vertical bracket 41 and the support base plate 42, and the relative position of the center ring 21 is fixed when the support rod 4 and the lathe bed are fixed to each other, and the relative distance between the positioning components 2 on both sides can be changed within a certain range when the vertical bracket 41 is not fixed to the bed. The telescopic sleeve 5 can ensure that the center points of the two center rings 21 can always be on the same straight line without hindering the mutual distance between the positioning components 2. When the extrusion screw 31 is rotated, its relative position with the threaded sleeve 211 is changed, thereby changing the relative distance between the extrusion rollers 32. The hollow gear 34 is engaged with the first lifting ring 212 through the second lifting ring 341 and is linked to the threaded sleeve 211, and is engaged with the bar groove 33 through the engaging convex strip 342. , so that when the hollow gear 34 is rotated, the extrusion screw 31 can rotate as a whole, thereby controlling the relative position of the extrusion roller 32. The gear ring 6 is installed on one side of the center ring 21 and meshes with the three hollow gears 34 through the tooth ring 61. When the gear ring 6 is rotated, the three extrusion screws 31 can rotate synchronously to achieve the extrusion limitation of the long shaft member 1, and the motor 7 provides a rotational output force for the gear ring 6 through the mutual internal meshing between the output gear 71 and the gear ring 6. The center ring 21 limits the relative position of the extrusion roller 32 through the through hole 213 through the guide rod 321, so that the upper track can maintain a tangent state with the outer wall of the long shaft member 1, so that when the clamping assembly 3 extrude and limits the outer wall of the long shaft member 1, the rotation direction of the extrusion roller 32 on it coincides with the rotation direction of the long shaft member 1.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A lathe positioner for long axis processing, characterized in that: The invention comprises a long shaft member (1), a positioning assembly (2) is symmetrically installed on the outside of the long shaft member (1), the positioning assembly (2) comprises a center ring (21), three threaded sleeves (211) are installed on the thin wall of the center ring (21), the three threaded sleeves (211) are installed along the outer circumference of the center ring (21) at equally divided angles, the axis lines of the three threaded sleeves (211) intersect with the center point of the center ring (21), and the insides of the three threaded sleeves (211) are all installed with clamping assemblies (3), the three clamping assemblies (3) are installed on the inside of the three threaded sleeves (211), and the three clamping assemblies (3) are installed on the inside of the three threaded sleeves (211). The holding components (3) are respectively pressed against the outer wall of the long axis component (1); the outer periphery of the center ring (21) is symmetrically fixed with support rods (4); the axes of the two support rods (4) are collinear; one end of the two support rods (4) is fixed with a vertical bracket (41); one end of the vertical bracket (41) is fixed with a support base plate (42); two telescopic sleeves (5) are arranged between the two positioning components (2); one end of the two telescopic sleeves (5) is respectively vertically fixed with the adjacent side walls of the vertical brackets (41) on both sides.

2. A lathe positioner for long axis machining according to claim 1, characterized in that: The clamping assembly (3) comprises an extrusion screw (31), wherein the extrusion screw (31) is threadedly mounted inside a threaded sleeve (211), an extrusion roller (32) is mounted on one end of the extrusion screw (31) via a bearing, and the extrusion roller (32) is located inside a center ring (21), an outer wall of the extrusion screw (31) is provided with a strip groove (33), and a first lifting ring (212) is fixedly connected to one end of the threaded sleeve (211) outside the center ring (21).

3. A lathe positioner for long axis machining according to claim 2, characterized in that: The outer wall sliding sleeve of the extrusion screw rod (31) is provided with a hollow gear (34), the bottom surface of the hollow gear (34) is fixedly connected with a second lifting ring (341), the second lifting ring (341) and the first lifting ring (212) are mutually engaged, and the inside of the hollow gear (34) is fixedly connected with a matching convex strip (342), and the matching convex strip (342) is slidably installed between the inner walls of the strip groove (33).

4. A lathe positioner for long axis machining according to claim 3, characterized in that: The two center rings (21) have gear rings (6) mounted on their opposite side walls through circular ring clamps, and the adjacent side walls of the two gear rings (6) are fixedly connected with toothed rings (61), and the toothed rings (61) on both sides are respectively meshed with the hollow gears (34) on both sides.

5. A lathe positioner for long axis machining according to claim 4, characterized in that: A motor (7) is installed on the top surface of the two supporting bottom plates (42) via a bracket, and an output shaft of the motor (7) is fixedly connected to an output gear (71), and the two output gears (71) are respectively meshed with two gear rings (6).

6. A lathe positioner for long axis machining according to claim 5, characterized in that: The outer wall of the center ring (21) is provided with three through holes (213), the three through holes (213) are respectively located on one side of the three threaded sleeves (211), and the axes of the three through holes (213) are respectively parallel to the axes of the three threaded sleeves (211).

7. A lathe positioner for long axis machining according to claim 2, characterized in that: A guide rod (321) is fixedly connected to one side of the extrusion roller (32) via a bracket, and the outer wall of the guide rod (321) is slidably mounted on the inner wall of the through hole (213).

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