Centering clamp of numerical control lathe

Abstract

The utility model discloses a numerically controlled lathe centering clamp which comprises a horizontally-arranged supporting platform, and a limiting plate is fixedly installed on the supporting platform. The first clamp seat and the second clamp seat are located at the upper end of the supporting platform and are oppositely arranged, and through holes are formed in the first clamp seat and the second clamp seat in a penetrating mode; the two first clamping mechanisms are respectively distributed on the first clamp seat and the second clamp seat; and a second clamping mechanism. The centering clamp of the numerical control lathe is simple in structure, has different clamping modes for different workpieces and is wide in application range, and the first clamping mechanism and the second clamping mechanism are each provided with an elastic buffering structure so that the workpieces can be prevented from being damaged; and the arranged second clamp base can be taken down and turned over for use, clamping in different directions can be provided for pipe fittings or shaft workpieces, and practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial fixture technical field especially, relates to a numerical control lathe centering fixture. BACKGROUND

[0002] The fixture refers to the device for fixing the machining object, making it occupy the correct position to accept the construction or detection in the mechanical manufacturing process, also called the fixture. In a broad sense, in the process of any process, the device for quickly, conveniently and safely installing the workpiece can be called the fixture. The numerical control lathe is one of the numerical control machine tools used more widely. It is mainly used for the cutting processing of the inner and outer cylindrical surface of the shaft parts or disc parts, the inner and outer conical surface of any taper angle, the complex rotary inner and outer curved surface and the cylindrical and conical thread, etc. and can also be used for cutting, drilling, reaming, reaming and boring, etc. While the numerical control lathe is used for machining the shafts and pipe fittings, in order to achieve the purpose of accurate positioning, the centering fixture is often used.

[0003] Through the search, the high-precision centering fixture for numerical control machine tool disclosed in the publication No. CN113385958B comprises a disc-shaped bottom plate, a radial synchronous clamping mechanism and an auxiliary clamp sleeve. The disc-shaped bottom plate is provided with a connecting mechanism and a plurality of linear guides extending radially. Each jaw of the radial synchronous clamping mechanism is arranged in each linear guide and can slide in the linear guide. The top end of each jaw is provided with the same limiting groove. The auxiliary clamp sleeve comprises opposite first and second ends. The prior art improves the machining precision and efficiency of the workpiece through the above technical scheme. However, the prior art still has the following disadvantages: first, the numerical control machine tool processes the workpiece, and the fixing direction is different according to the type of the workpiece. The prior art cannot change the clamping direction, and the application range is small. Second, the prior art has a single purpose and can only clamp thin-walled or shaft workpieces. The fixture needs to be frequently replaced on the numerical control machine tool when processing different types of workpieces, and the practicality is poor.

[0004] Based on the above technical problems, the technical personnel in the field urgently need to develop a numerical control lathe centering fixture which has a simple structure, can provide different direction clamping for pipe fittings or shaft workpieces, and has the function of a conventional fixture. INVENTION CONTENTS

[0005] The utility model aims at providing a numerical control lathe centering fixture which has a simple structure, can provide different direction clamping for pipe fittings or shaft workpieces, and has the function of a conventional fixture.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The numerical control lathe centering fixture of the utility model comprises:

[0008] A horizontally arranged support platform, on which a limiting plate is fixedly installed; and

[0009] A first clamp seat and a second clamp seat oppositely arranged at the upper end of the support platform, the first clamp seat being capable of sliding along the support platform, the second clamp seat being capable of being removed, and each of the first clamp seat and the second clamp seat being provided with a through hole at the upper end thereof for the workpiece to pass through;

[0010] Two first clamping mechanisms respectively arranged on the first clamp seat and the second clamp seat;

[0011] The centering clamp further comprises:

[0012] A second clamping mechanism having a moving end and a fixed end, the moving end being connected to the first clamp seat, and the fixed end being connected to the second clamp seat.

[0013] Further, the first clamp seat is in L shape, comprising a first base slidingly connected to the support platform, and a first support table perpendicular to the first base, the first support table being provided with the through hole.

[0014] Further, the upper end of the support platform is provided with a sliding rail, and the bottom of the first base is provided with a sliding block matched with the sliding rail.

[0015] The end of the sliding block away from the second clamp seat is connected to the piston rod of a first hydraulic cylinder.

[0016] Further, the second clamp seat is in L shape, and the bottom thereof is provided with a pad plate, so that the second clamp seat is leveled with the first clamp seat.

[0017] The second clamp seat comprises a second base, and the end of the second base close to the first clamp seat is provided with a fixing groove.

[0018] A second support table perpendicular to the second base, the second support table being provided with the through hole.

[0019] Further, each of the first clamping mechanisms comprises three clamping assemblies, and each of the clamping assemblies comprises a support rod connected to the first clamp seat and the second clamp seat.

[0020] A support block fixed to the end of the support rod, the support block being provided with a hole at the center thereof.

[0021] A second hydraulic cylinder arranged on the support block, the piston rod of the second hydraulic cylinder being connected to a semicircular pressing block through the support block.

[0022] Preferably, a protective pad made of rubber is sleeved on the semicircular pressing block.

[0023] Further, the second clamping mechanism comprises a movable clamping plate connected to the first clamping seat and capable of sliding with the first clamping seat; and

[0024] a fixed clamping plate assembly connected to the second clamping seat, the fixed clamping plate assembly being configured as a detachable structure.

[0025] Further, the fixed clamping plate assembly comprises a fixed plate; and

[0026] a clamping plate connected to the fixed plate through elastic columns, the number of the clamping plate and the elastic columns both being multiple and corresponding one by one;

[0027] a bolt provided on the fixed plate and used for connecting the second clamping seat.

[0028] Further, the elastic column comprises two oppositely arranged fixed blocks; and

[0029] a damping telescopic column connected between the two fixed blocks;

[0030] a spring sleeved on the damping telescopic column.

[0031] Preferably, an elastic pad made of rubber is attached to the clamping plate, and the outer surface of the elastic pad is concave-convex.

[0032] A protective pad made of rubber is arranged on the movable clamping plate.

[0033] In the above technical solution, the numerical control lathe centering clamp provided by the utility model has the following beneficial effects:

[0034] The numerical control lathe centering clamp provided by the utility model has simple structure, different clamping modes for different workpieces, wide application range, and elastic buffering structures arranged in the first clamping mechanism and the second clamping mechanism to prevent damage to the workpieces.

[0035] The second clamping seat provided by the utility model can be removed and used by being turned over, can provide clamping in different directions for pipe fittings or shaft workpieces, and improves practicability. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0037] Fig. 1 The overall structure schematic diagram of the numerical control lathe centering clamp provided by the utility model embodiment is shown in the figure.

[0038] Fig. 2 The side view of the first clamp base in the centering clamp of the numerical control lathe is provided for the embodiments of the utility model;

[0039] Fig. 3 The schematic view of the second clamp base after turning over in the centering clamp of the numerical control lathe is provided for the embodiments of the utility model;

[0040] Fig. 4 The schematic view of the second clamping mechanism in the centering clamp of the numerical control lathe is provided for the embodiments of the utility model;

[0041] Fig. 5 The structural schematic view of the elastic column in the centering clamp of the numerical control lathe is provided for the embodiments of the utility model;

[0042] Fig. 6 The structural schematic view of the clamping assembly in the centering clamp of the numerical control lathe is provided for the embodiments of the utility model.

[0043] Mark explanation:

[0044] 1, support platform; 2, first clamp base; 3, second clamp base; 4, first clamping mechanism; 5, second clamping mechanism; 6, first hydraulic cylinder; 7, backing plate;

[0045] 101, limit plate; 102, slide rail;

[0046] 201, first base; 202, first support table;

[0047] 301, second base; 302, fixed groove; 303, second support table;

[0048] 401, support rod; 402, support block; 403, second hydraulic cylinder; 404, semicircular pressing block;

[0049] 501, moving clamp plate; 502, fixed clamp plate assembly;

[0050] 5021, fixed plate; 5022, elastic column; 5023, clamp plate; 5024, elastic pad; 5025, bolt;

[0051] 5022-1, fixed block; 5022-2, damping telescopic column; 5022-3, spring. Specific implementation

[0052] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in conjunction with the drawings.

[0053] Referring to Figs. 1-6 As shown in the figure;

[0054] The utility model discloses a numerical control lathe centering fixture, this centering fixture includes:

[0055] The support platform 1 is horizontally arranged, and a limiting plate 101 is fixedly installed on the support platform 1.

[0056] The first fixture base 2 and the second fixture base 3 are oppositely arranged on the upper end of the support platform 1, the first fixture base 2 can slide transversely along the support platform 1, the second fixture base 3 can be removed, and the first fixture base 2 and the second fixture base 3 are both provided with through holes penetrating the upper ends thereof, so that the workpiece can pass through the through holes.

[0057] The first clamping mechanism 4 is arranged on the first fixture base 2 and the second fixture base 3.

[0058] The centering fixture further includes:

[0059] The second clamping mechanism 5 has a moving end and a fixed end, the moving end is connected to the first fixture base 2, and the fixed end is connected to the second fixture base 3.

[0060] As a further introduction of the embodiment, the first fixture base 2 is L-shaped, and includes a first base 201 slidably connected to the support platform 1, and a first support table 202 perpendicular to the first base 201, and the first support table 202 is provided with the through hole.

[0061] As a further introduction of the embodiment, the support platform 1 is provided with a sliding rail 102 at the upper end thereof, and the bottom of the first base 201 is provided with a sliding block 203 matched with the sliding rail 102.

[0062] The end of the sliding block 203, away from the second fixture base 3, is connected to the piston rod of the first hydraulic cylinder 6.

[0063] As a further introduction of the embodiment, the second fixture base 3 is L-shaped, and is provided with a backing plate 7 at the bottom thereof, so that the second fixture base 3 is leveled with the first fixture base 2.

[0064] The second fixture base 3 includes a second base 301, and a fixed groove 302 is formed in the end of the second base 301 close to the first fixture base 2.

[0065] The second support table 303 is perpendicular to the second base 301, and the second support table 303 is provided with the through hole. Specifically, the first support table 202 and the second support table 303 are both arc-shaped structures, and the workpiece passes through the through holes of the first support table 202 and the second support table 303, and then is clamped and fixed by the first clamping mechanism 4.

[0066] As a further introduction of the embodiment, each of the first clamping mechanisms 4 comprises three clamping assemblies, which are evenly distributed along the outer circumference of the through hole and are in a triangular structure to clamp the workpiece, and the clamping assemblies comprise support rods 401 connected to the first clamp seat 2 and the second clamp seat 3.

[0067] Support blocks 402 fixed to the ends of the support rods 401, and the support blocks 402 are provided with holes in the centers;

[0068] Second hydraulic cylinders 403 provided on the support blocks 402, and the piston rods of the second hydraulic cylinders 403 pass through the support blocks 402 and are connected to semicircular pressing blocks 404.

[0069] As a preferred technical solution of the embodiment, a protective pad made of rubber is sleeved on the semicircular pressing block 404.

[0070] As a further introduction of the embodiment, the second clamping mechanism 5 comprises a movable clamping plate 501 connected to the first clamp seat 2 and capable of sliding with the first clamp seat 2; and

[0071] A fixed clamping plate assembly 502 connected to the second clamp seat 3, and the fixed clamping plate assembly 502 is configured as a detachable structure.

[0072] As a further introduction of the embodiment, the fixed clamping plate assembly 502 comprises a fixed plate 5021; and

[0073] Clamping plates 5023 connected to the fixed plate 5021 through elastic columns 5022, and the number of the clamping plates 5023 and the elastic columns 5022 is multiple and one-to-one corresponding;

[0074] Pins 5025 provided on the fixed plate 5021 and matched with the fixed grooves 302 to connect the second clamp seat 3.

[0075] As a further introduction of the embodiment, the elastic column 5022 comprises two oppositely arranged fixed blocks 5022-1; and

[0076] A damping telescopic column 5022-2 connected between the two fixed blocks 5022-1;

[0077] A spring 5022-3 sleeved on the damping telescopic column 5022-2.

[0078] As a preferred technical solution of the embodiment, an elastic pad 5024 made of rubber is attached to the clamping plate 5023, and the outer surface of the elastic pad 5024 is in a concave-convex structure.

[0079] The mobile clamp plate 501 is provided with a protective pad made of rubber.

[0080] In the above technical solution, the numerical control lathe centering clamp has the following beneficial effects:

[0081] The numerical control lathe centering clamp has simple structure, different clamping modes for different workpieces, wide application range, and the first clamping mechanism and the second clamping mechanism are both provided with elastic buffering structures to prevent damage to the workpieces.

[0082] The second clamp base can be taken down and used by turning over, can provide clamping in different directions for pipe fittings or shaft workpieces, and improves practicability.

[0083] The above only describes some exemplary embodiments of the utility model by way of illustration, and it is needless to say that the ordinary skilled in the art can modify the described embodiments in various different ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A centering fixture for a CNC lathe, characterized by, The centering fixture comprises: a horizontally arranged supporting platform (1) on which a limiting plate (101) is fixedly installed; and a first fixture base (2) and a second fixture base (3) oppositely arranged at the upper end of the supporting platform (1), the first fixture base (2) being capable of sliding transversely along the supporting platform (1), the second fixture base (3) being capable of being removed, and the first fixture base (2) and the second fixture base (3) each having a through hole penetrating through the upper end thereof for the workpiece to pass through; two first clamping mechanisms (4) respectively arranged on the first fixture base (2) and the second fixture base (3); The centering fixture further comprises: a second clamping mechanism (5) having a moving end and a fixed end, the moving end being connected to the first fixture base (2) and the fixed end being connected to the second fixture base (3).

2. A centering fixture for a CNC lathe according to claim 1, characterized in that, The first fixture base (2) is L-shaped, comprising a first base (201) slidably connected to the supporting platform (1) and a first supporting table (202) perpendicular to the first base (201), the first supporting table (202) having the through hole.

3. A centering fixture for a CNC lathe according to claim 2, wherein The upper end of the supporting platform (1) is provided with a sliding rail (102), and the bottom of the first base (201) is provided with a sliding block (203) matched with the sliding rail (102). The end of the sliding block (203) away from the second fixture base (3) is connected to the piston rod of a first hydraulic cylinder (6).

4. The centering fixture of claim 1, wherein, The second fixture base (3) is L-shaped and is provided at the bottom with a backing plate (7) to make the second fixture base (3) level with the first fixture base (2). The second fixture base (3) comprises a second base (301), the end of the second base (301) close to the first fixture base (2) being provided with a fixing groove (302). A second supporting table (303) perpendicular to the second base (301), the second supporting table (303) having the through hole.

5. The centering fixture of claim 1, wherein, Each first clamping mechanism (4) comprises three clamping assemblies, and each clamping assembly comprises a supporting rod (401) connected to the first fixture base (2) and the second fixture base (3); and a supporting block (402) fixed to the end of the supporting rod (401), the supporting block (402) having a hole in the center thereof; a second hydraulic cylinder (403) arranged on the supporting block (402), the piston rod of the second hydraulic cylinder (403) penetrating through the supporting block (402) and being connected to a semicircular pressing block (404).

6. A centering fixture for a CNC lathe according to claim 5, wherein, A protective pad made of rubber is sleeved on the semicircular pressing block (404).

7. A centering fixture for a CNC lathe as claimed in claim 1, wherein, The second clamping mechanism (5) comprises a movable clamping plate (501) connected to the first fixture base (2) and capable of sliding with the first fixture base (2); and a fixed clamping plate assembly (502) connected to the second fixture base (3), the fixed clamping plate assembly (502) being configured as a detachable structure. The fixed clamping plate assembly (502) comprises a fixed plate (5021); and 8. A centering fixture for a CNC lathe according to claim 7, characterized in that, ​ A clamping plate (5023) is connected to the fixed plate (5021) through elastic columns (5022), the number of the clamping plate (5023) and the elastic columns (5022) is multiple, and they are one-to-one corresponding; A bolt (5025) is arranged on the fixed plate (5021) to connect the second clamp seat (3).

9. A centering fixture for a CNC lathe according to claim 8, characterized in that, The elastic column (5022) comprises two opposite fixed blocks (5022-1); and A damping telescopic column (5022-2) is connected between the two fixed blocks (5022-1); A spring (5022-3) is sleeved on the damping telescopic column (5022-2).

10. A centering fixture for a CNC lathe according to claim 8, characterized in that, An elastic pad (5024) made of rubber is attached to the clamping plate (5023), and the outer surface of the elastic pad (5024) is concave-convex structure; A protective pad made of rubber is arranged on the moving clamping plate (501).

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