Adjustable limiting clamping jaw of lathe

Abstract

The utility model provides an adjustable limiting clamping jaw of a lathe, which relates to the technical field of positioning fixtures and comprises a jaw body, and a T-shaped groove is machined at the upper end of the jaw body. A stepped hole is formed in the front end of the claw body, a cam shaft is installed in the stepped hole, a curve guide groove is formed in the surface of the cam shaft, a sliding block is slidably connected into the guide groove, a positioning column is fixedly arranged on the sliding block, and the end cover is fixed to the end of the stepped hole. End face threads are arranged at the front ends of the claw bodies, and clamping grooves are machined in the claw bodies on the two sides of the end face threads respectively. According to the adjustable limiting clamping jaw of the lathe, due to the fact that the cam shaft structure is used, the positioning column can move in a reciprocating mode, the position of the positioning column can be adjusted at will, and the purpose of positioning is achieved; as the camshaft structure is used, the positioning is reliable, and the positioning precision is high; the device is novel in structure, quick to mount, time-saving, simple to operate, simple and convenient to process, convenient to use and capable of reducing labor intensity.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning fixture technical field, especially, a kind of adjustable limit dog of lathe. BACKGROUND

[0002] At present, three-jaw chuck is generally used to clamp workpiece on lathe, and three-jaw chuck can only clamp outer circle of workpiece, but has no axial positioning effect on parts. Especially, three-jaw chuck is used for batch parts production and processing, because it has no axial positioning function, so the position of each part is different relative to dog during installation process, and the consistency of part position is poor, so that each part needs to determine the processing datum of part separately before production and processing, which is not convenient and fast for operation, thereby reducing batch production efficiency, increasing labor intensity and time cost.

[0003] In view of the problems existing in the prior art, it is necessary to design a new adjustable limit dog of lathe to solve the problem that the same datum batch processing can be quickly positioned without deviation to overcome the problems existing in the prior art. INVENTION CONTENTS

[0004] The utility model provides a kind of adjustable limit dog of lathe, solve the technical problem that existing dog cannot be positioned to batch zero axial with same datum.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] An adjustable limit dog of lathe, comprising a claw body, a T-shaped groove is formed at the upper end of the claw body;

[0007] A stepped hole is provided at the front end of the claw body, a cam shaft is installed in the stepped hole, a curved guide groove is provided on the surface of the cam shaft, a sliding block is connected in the guide groove, a positioning column is fixedly arranged on the sliding block, and an end cover is fixed at the end of the stepped hole;

[0008] An end face thread is provided at the front end of the claw body, and a clamping groove is formed on the claw body on both sides of the end face thread.

[0009] Further, the sliding block comprises a small end and a large end, the small end cooperates with the curved guide groove of the cam shaft, the large end cooperates with the T-shaped groove, and the sliding block is inserted into the stepped hole of the claw body together with the cam shaft.

[0010] Further, a plurality of threaded holes are uniformly distributed on the stepped hole, and are uniformly distributed around the stepped hole axis; the T-shaped groove is parallel to the stepped hole axis.

[0011] Further, the end cover is a cylinder, a through hole is processed in the center of the cylinder, and three counterbores are uniformly distributed around the through hole as an axis; an inner hexagonal adjusting hole is processed on one end surface of the camshaft, and the inner hexagonal adjusting hole is inserted into the through hole; three screws pass through the counterbores to fix the end cover on the stepped hole through the threaded holes.

[0012] Further, the end surface thread is engaged with the spiral groove of the processing equipment, the clamping groove is matched with the mounting clamping hole of the processing equipment, and the claw body is driven to reciprocate along the mounting clamping hole through cooperation of the spiral groove and the end surface thread.

[0013] Further, a thread is processed at the connecting end of the positioning column, and the positioning column is threadedly connected with the sliding block.

[0014] The working process of the utility model is as follows:

[0015] Claw assembly: first, install the small end of the sliding block into the curved guide groove of the camshaft, match the large end of the sliding block with the T-shaped groove, and insert the sliding block and the camshaft into the stepped hole of the claw body; then, match the through hole of the end cover with the adjusting end of the camshaft, and install the claw body through the screws; then, install the positioning column on the sliding block through the thread; finally, insert the rear end of the claw into the mounting clamping hole of the processing equipment, guide the claw into the mounting clamping hole through cooperation of the spiral groove and the end surface thread, and complete the assembly of the claw.

[0016] Part clamping:

[0017] (1) clamp the first piece of the part on the chuck according to the processing length requirement;

[0018] (2) adjust the camshaft to make the positioning column close to the first piece of the part, and determine the part processing reference;

[0019] (3) when batch production, first, make all the parts close to the positioning column, and then clamp them to ensure that the part references coincide, and keep the consistency of the part position in the multiple processing processes.

[0020] The utility model has the advantages that:

[0021] 1. The lathe adjustable limiting claw has the camshaft structure, the positioning column can reciprocate, the position of the positioning column can be adjusted at will, the positioning purpose is achieved, and the positioning is reliable and high in positioning precision.

[0022] 2. The lathe adjustable limiting claw has the camshaft structure, the positioning is reliable, the positioning precision is high, the structure is novel, installation is rapid, time is saved, operation is simple, processing is simple, use is convenient, and labor intensity is reduced.

[0023] 3. The lathe adjustable limiting claw has the camshaft structure, the positioning is reliable, the positioning precision is high, the structure is novel, installation is rapid, time is saved, operation is simple, processing is simple, use is convenient, and labor intensity is reduced.

[0024] In summary, the technical scheme of the utility model solves the problems in the prior art that when clamping batch parts, the chuck claw can only clamp the parts to play a clamping role, cannot determine the axial positioning of the parts, the batch production efficiency is low, the labor intensity is high, time is wasted, operation is complicated and the like. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical scheme of the prior art, the drawings needed to be used in the embodiments or the prior art description will be simply introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is a three-dimensional structural schematic view of the utility model.

[0027] Figure 2 It is an explosion view of the utility model.

[0028] Figure 3 It is a front end sectional view of the claw body.

[0029] Figure 4 It is a rear end sectional view of the claw body.

[0030] Figure 5 It is a front view of the camshaft.

[0031] Figure 6 It is a three-dimensional view of the utility model assembled on the processing equipment.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, claw body, 2, stepped hole, 3, camshaft, 4, end cover, 5, threaded hole, 6, T-shaped groove, 7, end face thread, 8, clamping groove, 9, curved guide groove, 10, inner hex adjusting hole, 11, screw, 12, through hole, 13, positioning column, 14, sliding block, 15, part. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0036] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or their combination.

[0037] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not meant to limit the scope of the present utility model. At the same time, it should be clear that the size of each part shown in the drawings is not drawn in proportion for the sake of description. The technology, method and equipment known to those skilled in the relevant art may not be discussed in detail, but under appropriate circumstances, the technology, method and equipment should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the utility model, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the scope of protection of the utility model: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0039] For the purposes of the description, relative terms such as "on", "above", "upper surface", "top", and the like can be used to describe a spatial or other relationship between one device or feature to another device or feature as illustrated in the figures. It is to be understood that the relative terms are intended to encompass different orientations of the devices in their use or operation, in addition to the orientations depicted in the figures. For example, if a device depicted in the figures is inverted, then an element described as "above" or "on" the other element or structure can be oriented "below" or "on" the other element or structure. Thus, the example term "above" can include both an "above" and "below" orientation. The devices can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0040] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not have a special meaning and are merely used to distinguish between corresponding parts, and therefore cannot be understood as limiting the scope of protection of the utility model.

[0041] The utility model provides a technical scheme: a lathe adjustable limit dog, as shown in the figure, including adjustable limit dog's main body claw body 1, claw body 1 is rectangular block structure, claw body 1 rear end is processed into mounting portion, is used for connecting with processing equipment, and the front end is processed into clamping positioning portion. Figures 1-6

[0042] The upper end of claw body 1 is processed with T-shaped groove 6.

[0043] The front end of claw body 1 is equipped with stepped hole 2, camshaft 3 is installed in stepped hole 2, curve guide slot 9 is equipped on the surface of camshaft 3, end face is processed with internal hex adjustment hole 10, sliding block 14 is connected in guide slot, positioning column 13 is fixedly arranged on sliding block 14, and end cover 4 is fixed in the end part of stepped hole 2.

[0044] Sliding block 14 includes small end and big end, small end cooperates with curve guide slot 9 of camshaft 3, big end cooperates with T-shaped groove 6, and sliding block 14 is inserted into stepped hole 2 of claw body 1 together with camshaft 3.

[0045] End cover 4 is cylindrical body, through hole 12 is processed in the middle, three counterbores are uniformly processed with the axis as the center, and three screws 11 pass through the counterbores and fix end cover 4 on stepped hole 2 through screw hole 5.

[0046] One end of positioning column 13 is processed with screw thread and is used to install on sliding block 14.

[0047] ​The mounting part comprises an end face thread 7 and a clamping groove 8; the end face thread 7 is machined on the end face of the claw body 1 and is used for engaging with the spiral groove of the machining equipment; the clamping groove 8 is arranged on the end faces of the claw body 1 at both sides of one end of the end face thread 7 and is used for cooperating with the mounting clamping hole of the machining equipment; the claw body 1 is assembled into the mounting clamping hole of the machining equipment through the clamping groove 8, the end face thread 7 engages with the spiral groove of the machining equipment, and the claw body 1 is driven to reciprocate along the mounting clamping hole through the cooperation of the spiral groove and the end face thread 7.

[0048] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A lathe adjustable limit dog, characterized by, Including claw body (1), the upper end of claw body (1) is processed with T-shaped groove (6); The front end of claw body (1) is provided with stepped hole (2), camshaft (3) is installed in stepped hole (2), curved guide groove (9) is arranged on the surface of camshaft (3), sliding block (14) is connected in guide groove, positioning column (13) is fixedly arranged on sliding block (14), and end cover (4) is fixed at the end of stepped hole (2). The front end of claw body (1) is provided with end face thread (7), and clamping groove (8) is processed on the claw body (1) on both sides of end face thread (7).

2. The adjustable limit stop dog for a lathe of claim 1, wherein, The sliding block (14) includes a small end and a large end, the small end cooperates with the curved guide groove (9) of the camshaft (3), and the large end cooperates with the T-shaped groove (6), and the sliding block (14) is inserted into the stepped hole (2) of the claw body (1) together with the camshaft (3).

3. The adjustable limit stop collet for a lathe of claim 1 wherein, The stepped hole (2) is uniformly distributed with a plurality of threaded holes (5); and the threaded holes (5) are uniformly distributed around the axis of the stepped hole (2); the T-shaped groove (6) is parallel to the axis of the stepped hole (2).

4. The adjustable limit stop dog for a lathe of claim 3, wherein, The end cover (4) is a cylinder, a through hole (12) is processed in the center of the cylinder, and three counterbores are uniformly distributed around the through hole (12) as an axis; an inner hexagonal adjusting hole (10) is processed on one end surface of the camshaft (3), and the inner hexagonal adjusting hole (10) is inserted into the through hole (12); three screws (11) pass through the counterbores to fix the end cover (4) on the threaded hole (5) of the stepped hole (2).

5. The adjustable limit stop collet for a lathe of claim 1 wherein, The end face thread (7) is engaged with the spiral groove of the processing equipment, the clamping groove (8) is matched with the mounting clamping hole of the processing equipment, and the claw body (1) is driven to reciprocate along the mounting clamping hole through the cooperation of the spiral groove and the end face thread (7).

6. The adjustable limit stop collet for a lathe of claim 1 wherein, The connecting end of the positioning column (13) is processed with a thread, and the positioning column (13) is threadedly connected with the sliding block (14).

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