Machine tool clamp capable of effectively improving machining precision and efficiency

Abstract

The utility model discloses a machine tool fixture capable of effectively improving machining precision and efficiency, which comprises a loading plate, supporting legs and a clamping assembly, the clamping assembly comprises supporting columns, a positioning column, a shifting rod, a first hinge support, a connecting rod, a clamping rod and a driving rod, the supporting columns are respectively arranged on the upper end wall of the loading plate, and the positioning column is arranged on the lower end wall of the loading plate. The positioning columns are horizontally arranged on the rear side and the left side of the upper end wall of the loading plate respectively and abut against the rear end wall and the left side of a to-be-machined workpiece, the shifting rods are arranged on the opposite sides of the positioning columns respectively, the upper ends of the shifting rods abut against the front end wall and the right side of the to-be-machined workpiece, and the first hinge supports are arranged at the upper end of the loading plate respectively. The lower ends of the connecting rods are rotationally connected with the first hinged supports respectively, the upper ends of the connecting rods are rotationally connected with the middles of the clamping rods respectively, and the upper ends of the driving rods are rotationally connected with the rear ends of the clamping rods respectively. According to the technical scheme, the machining precision and efficiency of the milling machine can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining technology, especially to a machine tool fixture capable of effectively improving machining precision and efficiency. BACKGROUND

[0002] A fixture refers to a device used to fix a machining object in a correct position during mechanical manufacturing, so as to accept construction or detection. The fixture is usually composed of a positioning element (determining the correct position of a workpiece in the fixture), a clamping device, a tool alignment guide element (determining the relative position of a tool and a workpiece or guiding the direction of the tool), an indexing device (allowing a workpiece to complete machining at multiple workstations in one installation, including a rotary indexing device and a linear movement indexing device), a connecting element, and a fixture body (fixture base), etc. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc., among which machine tool fixtures are the most common and are often referred to as fixtures. When machining a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the size, geometric shape, and mutual positional accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped (clamped tightly) before machining.

[0003] However, most of the traditional machine tool fixtures currently use manual operation to clamp the workpiece, which has the following defects and problems:

[0004] I. Efficiency and capacity limitations

[0005] Low production efficiency: manual operation is required to complete clamping, positioning, and loosening of the workpiece, which cannot realize automatic process, resulting in slow overall production rhythm;

[0006] Not suitable for mass production: manual operation takes a long time and is difficult to meet the efficiency requirements of large-scale production, and is more suitable for small-batch or sample machining scenarios;

[0007] II. Operation stability and precision problems

[0008] Unstable clamping force: the size of the clamping force depends on the operator's strength or experience, which easily leads to fluctuations in clamping force and affects machining precision;

[0009] Poor repeatability: the clamping force or position needs to be adjusted again each time the workpiece is replaced, and the consistency of the operation is difficult to guarantee, increasing the risk of machining errors;

[0010] III. Labor dependence and labor intensity

[0011] High requirements for operators: certain skills and experience are required to quickly and accurately complete clamping, and novices may cause low efficiency or workpiece damage due to improper operation;

[0012] Labor intensity: long time repetitive manual operation prone to fatigue, may affect production safety and efficiency. Utility model content

[0013] The utility model discloses a kind of machine tool fixtures that can effectively improve machining precision and efficiency, to solve the technical problems that the workpiece is clamped by artificial operation mode in prior machine tool fixture, production efficiency is low, not suitable for mass production, high to operating personnel, auxiliary time is long, affect efficiency, clamping force is unstable, affect machining precision.

[0014] To achieve the above object, the utility model provides a machine tool fixture that can effectively improve machining precision and efficiency, including loading plate, support foot and clamping assembly, the support foot is respectively arranged in the both sides of the lower end of the loading plate, the clamping assembly is respectively arranged in the left and right ends of the upper end of the loading plate, the clamping assembly includes support column, positioning column, lever, first hinge support, connecting rod, clamping rod and drive rod, the support column is respectively arranged on the upper end wall of the loading plate, the upper end of the support column and the lower end of the workpiece to be machined abut, the support column is used to support the workpiece to be machined, the positioning column is respectively arranged horizontally on the rear side and the left side of the upper end wall of the loading plate, the positioning column and the rear end wall and the left side of the workpiece to be machined abut, the lever is respectively arranged on the opposite side of the positioning column, the upper end of the loading plate is recessed with opening slot, the lever is respectively rotatably arranged in the opening slot, the upper end of the lever and the front end wall and the right side of the workpiece to be machined abut, the positioning column and the lever are used to realize accurate positioning of the workpiece to be machined, the first hinge support is respectively arranged on the upper end of the loading plate, the connecting line between the first hinge support forms a triangle, the lower end of the connecting rod is rotatably connected with the first hinge support, the upper end of the connecting rod is rotatably connected with the middle of the clamping rod, the drive rod is respectively slidably arranged on the upper end of the loading plate, the upper end of the drive rod is rotatably connected with the rear end of the clamping rod, the front end of the clamping rod is respectively abutted with the upper end wall of the workpiece to be machined, and the clamping rod is used to fix the workpiece to be machined.

[0015] Optionally, the clamping assembly further includes clamping cylinder, the clamping cylinder is respectively arranged on the lower end wall of the loading plate, the cylinder rod of the clamping cylinder is respectively threaded on the loading plate, and is fixedly connected with the lower end of the drive rod.

[0016] Optionally, the clamping assembly further includes second hinge support and positioning cylinder, the second hinge support is respectively arranged on the upper end of the opening slot, the lever is rotatably connected with the second hinge support, the positioning cylinder is rotatably arranged on the lower end wall of the loading plate, and the cylinder rod of the positioning cylinder is rotatably connected with the lower end of the lever.

[0017] Optionally, the inner side wall of the upper end of the lever is provided with a positioning part, and the front end of the positioning part is provided in a circular arc curved surface structure.

[0018] Optionally, the support leg is provided with a mounting hole at each end.

[0019] The technical scheme of the utility model has the following beneficial effects: the utility model discloses the technical scheme, and the support leg is arranged at the two sides of the lower end of the loading plate, the clamping assembly is arranged at the left and right ends of the upper end of the loading plate, the clamping assembly includes a support column, a positioning column, a lever, a first hinge support, a connecting rod, a clamping rod and a driving rod, the support column is arranged on the upper end wall of the loading plate, the upper end of the support column abuts against the lower end of the workpiece to be processed, and the support column is used for supporting the workpiece to be processed; the positioning column is horizontally arranged at the rear side and the left side of the upper end wall of the loading plate, and the positioning column abuts against the rear end wall and the left side of the workpiece to be processed; the lever is arranged at the opposite side of the positioning column; the upper end of the lever is rotatably arranged in the open slot in the upper end of the loading plate; the upper end of the lever abuts against the front end wall and the right side of the workpiece to be processed; the positioning column and the lever are used for realizing accurate positioning of the workpiece to be processed; the first hinge support is arranged at the upper end of the loading plate; a line between the first hinge supports forms a triangle; the lower end of the connecting rod is rotatably connected with the first hinge support; the upper end of the connecting rod is rotatably connected with the middle of the clamping rod; the driving rod is slidably arranged at the upper end of the loading plate; the upper end of the driving rod is rotatably connected with the rear end of the clamping rod; the front end of the clamping rod abuts against the upper end wall of the workpiece to be processed; and the clamping rod is used for fixing the workpiece to be processed, so that the workpiece to be processed is quickly and accurately positioned and fixed, manual operation is not needed, labor intensity is reduced, time and effort are saved, and the utility model is suitable for automatic production, has large clamping force, can firmly and reliably clamp the workpiece through three-point clamping, can ensure the stability of the position during clamping, has high clamping force consistency, avoids workpiece deviation or damage caused by clamping force fluctuation, saves time and effort, is suitable for automatic production, can significantly shorten the production cycle, can clamp two workpieces at the same time, effectively improves the accuracy and efficiency of milling machine processing, and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, 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 be obtained from the structure shown in these drawings without creating labor.

[0021] Figure 1The overall structure schematic view of the machine tool clamp capable of effectively improving machining precision and efficiency according to an embodiment of the present utility model;

[0022] Figure 2 The overall structure schematic view of the machine tool clamp capable of effectively improving machining precision and efficiency according to an embodiment of the present utility model from another perspective;

[0023] Figure 3 For Figure 1 The enlarged view of A in the middle;

[0024] Figure 4 The schematic view of the machine tool clamp capable of effectively improving machining precision and efficiency according to an embodiment of the present utility model with a workpiece to be machined in a clamped state.

[0025] The realization, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings in combination with embodiments. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] The present utility model provides a machine tool clamp capable of effectively improving machining precision and efficiency.

[0030] As Figures 1 to 4As shown in the utility model one embodiment, this machine tool fixture that can effectively improve processing precision and efficiency, including loading plate 100, support foot 200 and clamping assembly 300, support foot 200 is set up respectively in the both sides of the lower end of loading plate 100, clamping assembly 300 is set up respectively in the left and right ends of the upper end of loading plate 100, clamping assembly 300 includes support column 301, positioning column 302, lever 303, first hinge support 304, connecting rod 305, clamping rod 306 and drive rod 307, support column 301 is set up respectively on the upper end wall of loading plate 100, the upper end of support column 301 and the lower end of the workpiece to be processed 400 abut, support column 301 is used to support the workpiece to be processed 400, positioning column 302 is horizontally set up respectively in the rear side and left side of the upper end wall of loading plate 100, positioning column 302 and the rear end wall and left side of the workpiece to be processed 400 abut, lever 303 is set up respectively on the opposite side of positioning column 302, the upper end of loading plate 100 recessed has opening slot 101, lever 303 is rotatably set up respectively in opening slot 101, the upper end of lever 303 and the front end wall and right side of the workpiece to be processed 400 abut, positioning column 302 and lever 303 are used to realize the accurate positioning of the workpiece to be processed 400, first hinge support 304 is set up respectively in the upper end of loading plate 100, the connecting line between first hinge support 304 forms a triangle, the lower end of connecting rod 305 is rotatably connected with first hinge support 304 respectively, the upper end of connecting rod 305 is rotatably connected with the middle of clamping rod 306 respectively, drive rod 307 is slidably set up respectively in the upper end of loading plate 100, the upper end of drive rod 107 is rotatably connected with the rear end of clamping rod 306, the front end of clamping rod 306 is rotatably connected with the upper end wall of the workpiece to be processed 400 respectively, clamping rod 306 is used to fix the workpiece to be processed 400.

[0031] Specifically, clamping assembly 300 further includes clamping cylinder 308, clamping cylinder 308 is set up respectively on the lower end wall of loading plate 100, the cylinder rod of clamping cylinder 308 is respectively threaded in loading plate 100, and is fixedly connected with the lower end of drive rod 307, the workpiece is clamped and fixed quickly by clamping cylinder drive drive rod.

[0032] Specifically, clamping assembly 300 further includes second hinge support 309 and positioning cylinder (not shown), second hinge support 309 is set up respectively in the upper end of opening slot 101, lever 303 is rotatably connected with second hinge support 309, positioning cylinder is rotatably set up respectively on the lower end wall of loading plate 100, the cylinder rod of positioning cylinder is rotatably connected with the lower end of lever 303 respectively, the workpiece is positioned accurately quickly by positioning cylinder drive lever.

[0033] Specifically, the inner side wall of the upper end of the dialing rod 303 is respectively provided with a positioning part 3031, and the front end of the positioning part 3031 is provided in a circular arc curved surface structure, so as to avoid damaging the workpiece.

[0034] Specifically, the two ends of the supporting leg 200 are respectively provided with a mounting hole 201, so as to facilitate the mounting and fixing of the supporting leg.

[0035] Specifically, the working principle and process of the utility model are as follows:

[0036] As shown in Figure 4 the drawing, the workpiece to be processed 400 is placed on the supporting column, then the positioning cylinder is started, the positioning cylinder drives the dialing rod to swing inward, so that the workpiece is respectively abutted with the positioning column, the rapid positioning of the workpiece is realized, then the clamping cylinder is started, the clamping cylinder drives the clamping rod to press downward through the driving rod, so that the workpiece is firmly fixed, thereby the rapid and accurate positioning and fixing of the workpiece to be processed are realized, manual operation is not needed, the labor intensity is reduced, time and labor are saved, it is suitable for automatic production, the clamping force is large, the workpiece is clamped firmly and reliably through three-point clamping of the workpiece, the stability of the position in the clamping process can be ensured, the clamping force consistency is high, the workpiece is prevented from deviating or being damaged due to fluctuation of the clamping force, time and labor are saved, it is suitable for automatic production, and two workpieces can be simultaneously clamped at one time, the precision and efficiency of the milling machine processing are effectively improved.

[0037] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the utility model concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A machine tool fixture that can effectively improve machining accuracy and efficiency, characterized in that, The device comprises a loading plate, support feet and clamping assemblies, the support feet are arranged on both sides of the lower end of the loading plate, the clamping assemblies are arranged on both ends of the upper end of the loading plate, the clamping assemblies comprise support columns, positioning columns, push rods, first hinge supports, connecting rods, clamping rods and driving rods, the support columns are arranged on the upper end wall of the loading plate, the upper end of the support column abuts against the lower end of the workpiece to be processed, and the support column is used for supporting the workpiece to be processed, the positioning columns are horizontally arranged on the rear side and the left side of the upper end wall of the loading plate, and the positioning columns abut against the rear end wall and the left side of the workpiece to be processed, the push rods are arranged on the opposite sides of the positioning columns, the upper end of the push rod is arranged in the opening groove in the upper end of the loading plate in a rotatable manner, the upper end of the push rod abuts against the front end wall and the right side of the workpiece to be processed, the positioning columns and the push rods are used for realizing accurate positioning of the workpiece to be processed, the first hinge supports are arranged on the upper end of the loading plate, the connecting line between the first hinge supports forms a triangle, the lower end of the connecting rod is rotatably connected with the first hinge supports, the upper end of the connecting rod is rotatably connected with the middle of the clamping rod, the driving rod is arranged on the upper end of the loading plate in an up-and-down sliding manner, the upper end of the driving rod is rotatably connected with the rear end of the clamping rod, and the front end of the clamping rod abuts against the upper end wall of the workpiece to be processed.

2. The machine tool jig according to claim 1, wherein The clamping assembly further comprises clamping cylinders, the clamping cylinders are arranged on the lower end wall of the loading plate, and the cylinder rods of the clamping cylinders are arranged in the loading plate and are fixedly connected with the lower end of the driving rod.

3. The machine tool jig according to claim 1, wherein The clamping assembly further comprises second hinge supports and positioning cylinders, the second hinge supports are arranged on the upper end of the opening groove, the push rod is rotatably connected with the second hinge supports, and the positioning cylinders are rotatably arranged on the lower end wall of the loading plate, and the cylinder rods of the positioning cylinders are rotatably connected with the lower end of the push rod.

4. The machine tool jig according to claim 1, wherein The inner side wall of the upper end of the push rod is protrudingly provided with a positioning portion, and the front end of the positioning portion is provided in a circular arc curved surface structure.

5. The machine tool jig according to claim 1, wherein The two ends of the support feet are respectively provided with mounting holes.

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