CN219704248U

CN219704248U - Lathe processing clamp

Info

Publication number: CN219704248U
Application number: CN202321309920.2U
Authority: CN
Inventors: 杨历宾
Original assignee: Ningbo Beilun Shuangdong Machinery Co ltd
Current assignee: Ningbo Beilun Shuangdong Machinery Co ltd
Priority date: 2023-05-27
Filing date: 2023-05-27
Publication date: 2023-09-19
Anticipated expiration: 2033-05-27

Abstract

The utility model relates to a lathe machining fixture, which is used for positioning a workpiece. The lathe work fixture includes: the base is fixedly provided with at least three fixing columns which are distributed at intervals; the assembly seat is fixed on the fixed column, and a movable space is formed between the assembly seat and the base. The positioning assembly is fixed on the assembly seat and used for positioning the workpiece; the clamping assembly comprises a linkage plate positioned in the movable space, at least two sliding columns fixed on the linkage plate and a chuck assembly arranged on the assembly seat, wherein the chuck assembly and the linkage plate are respectively positioned on two sides of the assembly seat, the sliding columns penetrate through the assembly seat and are connected with the chuck assembly, and the linkage plate drives at least two chuck assemblies to synchronously move. The sliding chuck assemblies, the assembly seats and the linkage plates are connected, so that the linkage plates drive at least two chuck assemblies to synchronously move to solve the problem of inconvenient workpiece positioning and clamping.

Description

Lathe processing clamp

Technical Field

The utility model relates to the technical field of machine tools, in particular to a machine tool, and particularly relates to a lathe machining clamp.

Background

In order to improve the using effect of the special fixture and reduce the rejection rate of the special fixture, the existing combined lathe processing fixture combines the standard special fixtures with different shapes and different specifications into a whole, so that the special fixture can be used on a plurality of different lathes to process different devices, thereby improving the universality of the fixture and ensuring the processing precision. Because the combined clamp combines a plurality of clamps together, the combined clamp has larger volume and weight, causes certain inconvenience in the installation and use process and has high one-time investment, thereby limiting the application and popularization of the combined clamp. The group fixture is formed by reforming a special fixture, has the advantages of high precision and high universality, and has lower cost than the combined fixture, but the automation degree is insufficient, and the requirements of modern machine tool processing cannot be met.

Chinese patent CN218873758U discloses a lathe adds clamping apparatus for machining, through rotating fixture and setting up in the mount, and clamping groove of fixture front and back side uses stop gear to fix, stop gear owing to be provided with hex bolts cooperation spout for fixed lathe tool or work piece need not to dismantle the back repeated centre gripping in the use, thereby realizes that work piece or lathe tool that multiple shape size is different is fixed, and the adaptation scope is wider, and convenient to use is more swift. But this anchor clamps are equipped with a plurality of sizes, the fixed slot of shape inequality, and form multiple different fixed orifices, and this not only has increased the work load of installing fixed processing work piece to the centre gripping location is complicated, influences machining efficiency, and the precision of processing work piece also greatly reduced's technical problem, consequently needs the improvement.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiment of the utility model provides a lathe machining fixture, a linkage plate drives two chuck assemblies to synchronously move, the problems of inconvenient clamping and positioning of workpieces and low clamping precision are effectively solved, and two lateral positioning columns and a central positioning column are arranged on an assembly seat, so that the machining precision is improved.

According to a first aspect of an embodiment of the present utility model, there is provided a lathe work jig comprising:

the base is fixedly provided with at least three fixing columns which are distributed at intervals;

the assembly seat is fixed on the fixed column, and a movable space is formed between the assembly seat and the base;

the positioning assembly is fixed on the assembly seat and used for positioning the workpiece;

the clamping assembly comprises a linkage plate positioned in the movable space, at least two sliding columns fixed on the linkage plate and a chuck assembly arranged on the assembly seat, wherein the chuck assembly and the linkage plate are respectively positioned on two sides of the assembly seat, the sliding columns penetrate through the assembly seat and are connected with the chuck assembly, and the linkage plate drives at least two chuck assemblies to synchronously move.

Still further, the locating component comprises a central locating column and at least two lateral locating columns arranged around the central locating column, wherein the central locating column is used for locating a central hole of a workpiece, and the lateral locating is used for locating a lateral locating surface of the workpiece.

Further, the center line of each lateral positioning column is equidistant from the center line of the central positioning column.

Still further, the surface of the fitting seat is provided with an identification groove for identifying the installation angle of the workpiece.

Still further, the chuck subassembly is including being fixed in the mounting bracket of mount pad and articulated connect in the pressure head piece of mounting bracket, the slip post with the articulated end of pressure head piece is articulated to be connected, the crimping end of pressure head piece is used for the crimping work piece.

Still further, the chuck assembly further includes a support post secured to the mounting base, the support post being disposed opposite the crimping end for commonly gripping a workpiece.

Further, the linkage plate comprises a plate body and at least two linkage arms formed by partially protruding from the plate body, and the sliding columns are fixed on the corresponding linkage arms.

Still further, the board body is provided with the mounting hole that runs through, the base offer with the coaxial clearance hole of mounting hole, the mounting hole is used for connecting power unit.

Still further, the linkage arm is provided with three.

Further, the mounting seat is provided with at least two weight ports distributed around the center.

Further, the workpiece comprises a workpiece main body, at least two clamping bosses protruding out of the side face of the workpiece main body and positioning bosses distributed at intervals.

The technical scheme provided by the embodiment of the utility model can comprise the following beneficial effects: the base is provided with the clearance hole coaxial with the mounting hole, so that the total mass of the whole clamp is greatly reduced, a power mechanism is convenient for workers to mount, and three fixed columns fixed on the surface of the base completely penetrate through the assembly seat. The chuck assembly and the linkage plate are respectively arranged at two sides of the adapter seat, and the linkage plate and the chuck assembly are connected by utilizing a hinge, so that all parts of the lathe processing clamp are more tightly matched together. The sliding column and the assembly seat form relative sliding, the sliding column is connected with the chuck assembly, and the chuck assembly and the assembly seat can be connected with the linkage plate together through the sliding column, so that the linkage plate drives at least two chuck assemblies to synchronously move, and the problem of inconvenience in workpiece positioning and clamping is solved. The assembly seat is provided with two identification grooves, the central lines of the two identification grooves are respectively collinear with the central lines of the two lateral positioning lines, and the positioning accuracy of the workpiece is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic diagram showing a structure of a lathe work jig in front view according to an exemplary embodiment.

FIG. 2 is a schematic cross-sectional view of a lathe work fixture according to an exemplary embodiment.

FIG. 3 is a schematic top view of a lathe work fixture according to an exemplary embodiment.

Fig. 4 is a schematic bottom view of a lathe work fixture according to an exemplary embodiment.

FIG. 5 is a schematic diagram illustrating a side view of a lathe work fixture according to an exemplary embodiment.

FIG. 6 is a schematic diagram illustrating an exploded configuration of a lathe work fixture according to an exemplary embodiment.

FIG. 7 is a schematic diagram of a partially enlarged construction of a lathe work fixture cartridge assembly according to an exemplary embodiment.

In the figure, 1, a base; 11. a clearance hole; 12. fixing the column; 2. an assembly seat; 21. identifying a groove; 211. a first identification slot; 212. a second identification slot; 213. a weight port; 3. a positioning assembly; 31. a center positioning column; 32. a lateral positioning column; 321. a first lateral positioning column; 322. a second lateral positioning post; 4. a clamping assembly; 41. a linkage plate; 411. a plate body; 412. a linkage arm; 413. a linkage bolt; 414. a mounting hole; 42. a sliding column; 43. a collet assembly; 431. a mounting frame; 432. a ram block; 433. a support column; 50. a workpiece.

Detailed Description

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the present utility model provides a lathe work jig.

The lathe work fixture includes: base 1, mount pad 2, clamping assembly 4 and locating component 3, clamping assembly 4 are used for centre gripping work piece 50, and locating component 3 are used for locating work piece 50, and locating component 3 is located on mount pad 2.

Optionally, the base 1 is uniformly distributed by six fixing bolts around the center of the base 1 at an angle of 60 °, so that the whole fixture can be uniformly connected to equipment, and three fixing columns 12 are oppositely arranged on the upper surface of the base 1 at an included angle of 120 °.

The base 1 is provided with the clearance hole 11 coaxial with the mounting hole 414, the quality of the whole clamp can be greatly reduced by the clearance hole 11, and the clearance hole 11 and the mounting hole 414 are coaxially arranged to provide a larger operation space for the power mechanism to be mounted on the mounting hole 414.

The assembly seat 2 is completely penetrated by the fixed column 12 on the base 1, and the two can be fixed in relative position and arranged at intervals, so that a movable space is reserved between the base 1 and the assembly seat 2, and the distance between the base 1 and the assembly seat 2 can be regulated and controlled according to the actual size of the required telescopic movement of the clamping assembly 4, thereby being beneficial to clamping and fixing workpieces 50 with different sizes.

As shown in fig. 4 to 7, the clamping assembly 4 includes a linkage plate 41 located in the movable space, at least two sliding columns 42 fixed to the linkage plate 41, and a collet assembly 43 mounted to the mounting base 2, and the collet assembly 43 and the linkage plate 41 are located at both sides of the mounting base 2, respectively. The sliding column 42 penetrates through the assembly seat 2 to slide, the sliding column 42 and the assembly seat 2 form relative sliding, the sliding column 42 is connected with the chuck assemblies 43, the chuck assemblies 43 and the assembly seat 2 can be connected with the linkage plate 41 together through the sliding column 42, and the linkage plate 41 drives at least two chuck assemblies 43 to synchronously move.

The chuck assembly 43 includes a mounting frame 431 fixed to the mounting base 2 and a pressing block 432 hinge-coupled to the mounting frame 431, and the pressing block 432 is fixed to the top end of the mounting frame 431 by bolting with the mounting frame 431. Also, the lower surface of the presser piece 432 is parallel to the surface of the mount block 2, so that the presser piece 432 can fix the collet assembly 43 more smoothly. The mounting frame 431 is connected with the assembly seat 2 through the hinged connecting rod, so that the vertical position precision of the chuck assembly 43 and the assembly seat 2 is guaranteed, the whole pressure head block 432 is not loose, and the clamping precision is guaranteed. The sliding column 42 is hinged to the hinged end of the pressing head block 432, the pressing head block 432 is used for pressing the workpiece 50, the pressing head block 432 is directly contacted with the workpiece 50, in order to ensure that the workpiece 50 is not extruded and deformed by the pressing head block 432 in the machining process, the pressing head block 432 can control clamping force by adjusting the moving amount of the sliding column 42, so that the workpiece 50 is ensured to not shake randomly in the machining process, and the workpiece 50 is ensured not to be extruded and deformed.

The mounting frame 431 is connected to the mounting base 2 by bolts, the mounting base 2 is completely penetrated by the sliding column 42, and is connected with the linkage arm 412 of the linkage plate 41 by bolts, and the fit between the two is clearance fit. When the rotational speed of the work piece 50 is too high, there is a relative movement of the mounting frame 431 and the mounting seat 2, so that the bolts are not damaged by being subjected to excessive shear stress.

The collet assembly 43 further includes a support post 433 secured to the mounting block 2, the support post 433 being disposed opposite the crimping end. The support columns 433 are used to adjust the crimping height of the mounting frame 431 to accommodate different height workpiece 50 crimping positions.

The positioning assembly 3 comprises a central positioning column 31 and at least two lateral positioning columns 32 arranged around the central positioning column 31, wherein the central positioning column 31 is a cylindrical sleeve and is arranged opposite to the assembly seat 2, and the central positioning column 31 is used for positioning a central hole of the workpiece 50. Two lateral positioning columns 32 are located laterally to the central positioning column 31, the lateral positioning columns 32 are mainly used for positioning the lateral positioning surfaces of the workpiece 50, and the center line of each lateral positioning column 32 is equidistant from the center line of the central positioning column 31.

The surface of the assembly seat 2 is provided with an identification groove 21, the identification groove 21 is a horseshoe-shaped groove with an opening facing the central line of the central positioning column 31, the identification groove 21 is embedded on the assembly seat 2, the first identification groove 211 and the second identification groove 212 are symmetrically distributed, and the central lines of the first identification groove 211 and the second identification groove 212 are respectively collinear with the central lines of the first lateral positioning column 321 and the second lateral positioning column 322 which are arranged on the assembly seat 2. The identification groove 21 is used for identifying the installation angle of the workpiece 50, and if a large error occurs in the installation angle, the center line of the identification groove 21 and the center line of the lateral positioning column 32 cannot be collinear.

The linkage plate 41 includes a plate body 411 and three linkage arms 412 formed to protrude from a part of the plate body 411, the plate body 411 has a ring-shaped object of a suitable thickness, a mounting hole 414 for mounting the power unit is provided in the middle, and the linkage arms 412 are formed as a U-shaped convex plate. Each linkage arm 412 is provided with a linkage bolt 413, the linkage plate 41 is connected with the sliding column 42 through the linkage bolt 413, and the three linkage arms 412 are uniformly distributed around the mounting hole 414 at an angle of degrees, so that the whole linkage plate 41 is an axisymmetric mechanism, and the sliding column 42 is fixed on the corresponding linkage arm 412.

The mounting seat 2 is provided with at least two weight ports 213 distributed around the center. The weight ports 213 are not uniformly distributed on the mounting base 2, and the weight ports 213 are spaced around the center and avoid the diameter of the mounting hole 414 according to the positional relationship of the identification groove 21, so that the weight and the rotational inertia can be reduced. The weight hole 213 not only can strengthen the fit between the chuck assembly 43 and the assembly seat 2, but also can prevent the bolt connected between the chuck assembly 43 and the assembly seat 2 from bearing larger torque to cause bending moment deformation when the linkage plate 41 rotates, and simultaneously reduces the relative movement of the chuck assembly 43 and the assembly seat 2, so that the surface is not worn.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A lathe work fixture for positioning a workpiece, the lathe work fixture comprising:

2. The lathe work fixture of claim 1, wherein said positioning assembly comprises a central positioning post for positioning a central aperture of the workpiece and at least two lateral positioning posts disposed around said central positioning post for positioning lateral positioning surfaces of the workpiece.

3. The lathe work fixture of claim 2 wherein a centerline of each of said lateral positioning posts is equidistant from a centerline of said center positioning post.

4. The lathe work fixture according to claim 1, wherein a surface of the fitting seat is provided with an identification groove for identifying a mounting angle of the workpiece.

5. The lathe work fixture of claim 1, wherein said collet assembly comprises a mounting bracket secured to said mounting bracket and a ram block hingedly connected to said mounting bracket, said slide post being hingedly connected to a hinged end of said ram block, and a crimping end of said ram block being adapted to crimp a workpiece.

6. The lathe work fixture of claim 5, wherein said collet assembly further comprises a support post secured to said mounting block, said support post being disposed opposite said crimping end for commonly gripping a workpiece.

7. The lathe work fixture of claim 1, wherein said linkage plate comprises a plate body and at least two linkage arms formed to protrude partially from said plate body, said slide posts being secured to corresponding ones of said linkage arms.

8. The lathe work fixture of claim 7, wherein said plate body is provided with a mounting hole therethrough, said base being provided with a clearance hole coaxial with said mounting hole, said mounting hole for connection to a power mechanism.

9. The lathe work fixture of claim 7, wherein said linkage arm is provided with three.

10. The lathe work fixture of claim 1, wherein said mounting block is provided with at least two weight ports distributed around a center.