Workpiece positioning clamp for metal processing machine tool
Through the innovative design of the fixed seat, positioning seat and clamping adjustment components, the problems of slippage and space occupation of traditional fixtures are solved, and reliable workpiece clamping and efficient space utilization are achieved.
Patent Information
- Application Number
- CN202522553602.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-12-02
AI Technical Summary
Traditional fixtures are prone to slippage during machining, which reduces machining accuracy. In addition, their large size and space-consuming structure reduce space utilization.
The design employs a combination of a fixed base, a positioning base, and a clamping adjustment assembly. By utilizing the meshing of serrated convex and concave surfaces, the guidance of guide sliders and guide grooves, and screw adjustment, reliable clamping and flexible adjustment of the workpiece can be achieved.
It achieves reliable anti-slip of the workpiece, precise control of clamping force, compact structure, and improves space utilization and machining accuracy.
Smart Images
Figure CN223734441U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lathe machining fixture technical field, especially a workpiece positioning fixture for metalworking machine tool. BACKGROUND
[0002] In the metal cutting, milling, drilling and other machining process, the workpiece must be reliably clamped and fixed on the machine tool workbench or fixture base to resist cutting force, vibration and torque, ensure the machining accuracy and safety. The widely used traditional fixture mainly relies on friction to fix the workpiece or the fixture itself. In the machining process, especially when intermittent cutting force or strong vibration is withstood, the fixture and the base workbench are prone to slip, which reduces the machining accuracy. In addition, the traditional fixture, such as vice or flat-nose pliers, has a large structure and bulky size, and requires sufficient operation space. In the processing of multiple workpieces, the space utilization is greatly reduced. Therefore, the workpiece positioning fixture with reliable anti-slip ability and compact structure is provided. SUMMARY
[0003] Therefore, the utility model discloses a workpiece positioning fixture for metalworking machine tool, which has reliable anti-slip ability and compact structure to solve the problems mentioned in the background.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] The utility model provides a workpiece positioning fixture for metal processing machine tool, including fixed seat, the middle part of fixed seat is provided with fixed groove along its length, the both sides wall of fixed groove is equipped with two sliding groove, a plurality of connecting blocks are arranged in the sliding groove and are slidably arranged, and connecting screw hole is arranged on the connecting block, the top surface of fixed seat is equipped with the sawtooth convex surface of going up along the length direction of fixed seat on one side or both sides of fixed groove, and at least two positioning seats are arranged on the fixed seat, the bottom surface of positioning seat is provided with sawtooth concave surface matched with sawtooth convex surface, and the blind hole is arranged on the positioning seat, and the clamping adjustment assembly is arranged between the adjacent two positioning seats, and the workpiece to be processed is placed between the clamping adjustment assembly and one of the positioning seats, the clamping adjustment assembly includes the horizontal displacement movable element of both sides and the vertical displacement movable element of being located between the horizontal displacement movable element of both sides, the vertical displacement movable element is the isosceles trapezoidal structure of longitudinal section, and is provided with the through hole in the middle part, the side of horizontal displacement movable element close to vertical displacement movable element is the inclined plane, and the inclination is matched with the inclination of the side of vertical displacement movable element, wherein the screw is screwed through the blind hole of positioning seat and the connecting screw hole of the connecting block of corresponding position, and then positioning seat is locked on fixed seat, and another screw is screwed through the through hole of vertical displacement movable element and the connecting screw hole of the connecting block of corresponding position, and the longitudinal displacement of vertical displacement movable element is adjusted through the screw, to drive the horizontal movement of horizontal displacement movable element.
[0006] Further, the top surface of the fixed seat is provided with a positioning groove parallel to the fixed groove on one side of the fixed groove, the bottom of the positioning seat and / or the horizontal displacement movable element is provided with a positioning protrusion downward, the positioning protrusion is matched with the positioning groove, and constitutes a sliding connection.
[0007] Further, the two sides of the vertical displacement movable element are symmetrically provided with guide sliding blocks, the cross section of the guide sliding block is T-shaped structure and is inclined, and the inclination is consistent with the inclination of the waist of the isosceles trapezoidal structure of the vertical displacement movable element; the side of the horizontal displacement movable element close to the vertical displacement movable element is provided with a guide sliding groove matched with the guide sliding block for sliding connection.
[0008] Further, the cross section of the guide sliding block is constant T-shaped structure, and the cross section of the guide sliding groove is matched with the cross section of the guide sliding block and is also constant.
[0009] Further, the teeth of the sawtooth convex surface are consistent in tooth shape specification and are uniformly distributed along the length direction of the fixed seat.
[0010] Further, the bottom surface of the fixed seat is provided as a wave-shaped concave-convex surface. Beneficial effects
[0011] Compared with the prior art, the utility model at least includes the following advantages:
[0012] 1. The positioning seat can be easily adjusted in position and locked in the fixed groove of the fixed seat through the connecting block, and can quickly adapt to different sizes of workpieces or different clamping stations. The clamping adjustment assembly can adjust the displacement of the vertical moving part through a screw, realize precise control of the clamping force, support two modes of simultaneous clamping on both sides and one-way clamping on one side, adapt to workpieces of different sizes and shapes, and have high adjustment flexibility.
[0013] 2. A clamping adjustment assembly is inserted between the two positioning seats, so that it can apply horizontal thrust to both sides to clamp the workpiece, which is simple and convenient to operate without complex calibration. The axial locking force of the screw is efficiently converted into horizontal clamping force by the guide of the inclined surface on both sides of the vertical moving part and the guide sliding groove and guide sliding block, the workpiece is rigidly pressed between the positioning seat and the horizontal moving part, there is no loose space, and the intermittent cutting force and vibration can be resisted, so that the clamping is reliable.
[0014] 3. The clamping adjustment assembly is formed by a vertical moving part and two horizontal moving parts, which has a simple and compact structure, a greatly reduced volume, and low operation space requirement. The positioning seat and the clamping adjustment assembly are installed through the connecting block and the fixed groove of the fixed seat, and the installation position can be flexibly adjusted according to the size and number of workpieces, so that a large area of space is not occupied, multiple workpieces can be densely arranged when multiple workpieces are machined, and the space utilization is greatly improved.
[0015] 4. The sawtooth-shaped groove on the bottom surface of the positioning seat is engaged with the sawtooth-shaped convex surface on the top of the fixed seat, so that the transverse sliding can be effectively resisted, and the positioning block and the positioning groove on the bottom of the positioning seat and the horizontal moving part are transversely connected, so that the longitudinal displacement can be limited. By double limiting the forward and backward movement and the left and right movement of the positioning seat, the loosening of the positioning seat after being fixed is avoided.
[0016] 5. The bottom surface of the fixed seat adopts a wave-shaped concave-convex surface to increase friction, further improve the connection stability of the whole clamp and the machine tool workbench, and avoid the sliding of the whole clamp. DETAILED DESCRIPTION
[0017] Figure 1 It is a structural schematic view of the utility model.
[0018] Figure 2 It is a partial three-dimensional structural schematic view of the utility model.
[0019] Figure 3 It is a structural schematic view of the utility model Figure 2 without clamping a workpiece.
[0020] Figure 4 It is a partial enlarged structural schematic view of the utility model Figure 3 .
[0021] Figure 5 It is a structural schematic view of the utility model in side view.
[0022] Figure 6 It is the structure schematic view of fixed part of the utility model.
[0023] Figure 7 It is the structure schematic view of clamping adjusting assembly of the utility model.
[0024] Figure 8 It is the structure schematic view of vertical moving movable part of the utility model.
[0025] Figure 9 It is the structure schematic view of horizontal moving movable part of the utility model.
[0026] Marked in the drawing: 1 - workpiece to be processed;2 - positioning seat;20 - counterbore;21 - positioning boss;3 - fixed seat;30 - first sawtooth convex surface;31 - second sawtooth convex surface;32 - third sawtooth convex surface;33 - positioning groove;34 - fixed groove;35 - sliding groove;36 - wave-shaped concave-convex surface;4 - clamping adjusting assembly;40 - vertical moving movable part;400 - body;401 - perforation;402 - guide sliding block;41 - horizontal moving movable part;410 - guide sliding groove;5 - connecting block;50 - connecting screw hole. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make detailed description combining with the drawings and specific implementation. In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model. However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific implementation.
[0028] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as "connected to" another element, it can be directly connected to the one element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are used for explanation purposes only and are not intended to be limiting.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0030] Referring to Figures 1-9The embodiment provides a workpiece positioning clamp for a metal processing machine tool, which comprises a long strip-shaped fixed base 3, the bottom of the fixed base 3 is locked on the workbench of the machine tool through screws. The bottom surface of the fixed base 3 is provided as a wavy concave-convex surface, the friction is increased to improve the anti-skid effect. The middle part of the fixed base 3 is provided with a fixed groove 34 along the length of the fixed base 3, two symmetrically arranged sliding grooves 35 are formed in the side walls of the fixed groove 34, a plurality of connecting blocks 5 are slidably arranged in the sliding grooves 35, connecting screw holes 50 are arranged on the connecting blocks 5, and the connecting blocks 5 can translate along the fixed groove. The top surface of the fixed base 3 is provided with an upwardly protruding sawtooth-shaped convex surface along the length direction of the fixed base 3 on both sides of the fixed groove 34, and the top surface of the fixed base 3 is provided with a positioning groove 33 parallel to the fixed groove 34 on one side of the fixed groove 34, thereby forming a first sawtooth-shaped convex surface 30, a second sawtooth-shaped convex surface 31 and a third sawtooth-shaped convex surface 32 on the top surface of the fixed base 3, the positioning groove 33 is located between the first sawtooth-shaped convex surface 30 and the second sawtooth-shaped convex surface 31, and the fixed groove 34 is located between the second sawtooth-shaped convex surface 31 and the third sawtooth-shaped convex surface 32. The teeth of the first sawtooth-shaped convex surface 30, the second sawtooth-shaped convex surface 31 and the third sawtooth-shaped convex surface 32 are uniformly distributed along the length direction of the fixed base 3, and the teeth of the first sawtooth-shaped convex surface 30, the second sawtooth-shaped convex surface 31 and the third sawtooth-shaped convex surface 32 are corresponding in front and back, and the extension lines thereof coincide. It should be noted that in other embodiments, the top surface of the fixed base can be provided with only any one of the first sawtooth-shaped convex surface 30, the second sawtooth-shaped convex surface 31 or the third sawtooth-shaped convex surface 32, or a combination of any two of the above three sawtooth-shaped convex surfaces.
[0031] Six positioning bases 2 are arranged on the fixed base 3, the bottom surface of the positioning base 2 is provided with a sawtooth-shaped concave surface matched with the sawtooth-shaped convex surface, and a counterbore 20 is arranged on the positioning base 2. The screws pass through the counterbores 20 of the positioning bases 2 and are threadedly connected with the connecting screw holes 50 of the corresponding connecting blocks 5, so as to lock the positioning bases 2 on the fixed base 3.
[0032] A clamping adjusting assembly 4 is arranged between two adjacent positioning seats 2, and the workpiece 1 to be processed is placed between the clamping adjusting assembly 4 and one of the positioning seats 2. The clamping adjusting assembly 4 comprises two lateral moving members 41 and a vertical moving member 40 arranged between the two lateral moving members 41. The vertical moving member 40 has an isosceles trapezoidal structure in the longitudinal section, and a through hole 401 is arranged in the middle of the vertical moving member 40. The side of the lateral moving member 41 close to the vertical moving member 40 is an inclined surface, and the inclination of the inclined surface matches the inclination of the side of the vertical moving member 40. A screw is connected to the connecting hole 50 of the connecting block 5 at the corresponding position through the through hole 401 of the vertical moving member 40, so as to connect the vertical moving member 40 and the connecting block 5, and adjust the longitudinal displacement of the vertical moving member 40 through the screw. Then, the lateral moving member 41 is driven to move laterally through the side inclined surface of the vertical moving member 40 and the inclined surface of the lateral moving member 41.
[0033] Preferably, the left and right sides of the vertical moving member 40 are symmetrically provided with guide sliding blocks 402. The transverse section of the guide sliding block is a T-shaped structure and is arranged obliquely. The transverse section of the guide sliding block 402 is a constant T-shaped structure, and the inclination of the guide sliding block 402 is consistent with the inclination of the waist of the isosceles trapezoidal structure of the vertical moving member 40. The side of the lateral moving member 41 close to the vertical moving member 40 is provided with a guide sliding groove 410 which is slidably connected with the guide sliding block 402. The transverse section of the guide sliding groove 410 is a constant T-shaped structure which is matched with the transverse section of the guide sliding block 402, and the inclination of the guide sliding groove 410 is consistent with the inclination of the guide sliding block 402. The guide sliding block 402 is located in the guide sliding groove 410, which prevents the vertical moving member 40 and the lateral moving member 41 from being separated, and limits the vertical moving member 40 to move only in the vertical direction and the lateral moving member 41 to move only in the lateral direction, so as to avoid the deviation and jamming of the two members and ensure the accuracy of the movement direction.
[0034] The bottom of the positioning seat 2 is provided with a positioning protrusion 21 which is matched with the positioning groove 33 and forms a sliding connection, so as to prevent the longitudinal sliding of the positioning seat 2. The bottom of the lateral moving member 41 of the clamping adjusting assembly 4 is also provided with a positioning protrusion which is slidably connected with the positioning groove 33, so as to ensure that the lateral moving member 41 only moves in the length direction of the fixing seat 3 without deviation. It should be noted that in other embodiments, the positioning protrusion 21 can be arranged only at the bottom of the positioning seat 2, or the positioning protrusion can be arranged only at the bottom of the lateral moving member 41. Both of the two arrangements can meet the longitudinal limiting and guiding requirements of the corresponding components.
[0035] In the specific implementation process, the connecting block 5 is inserted into the sliding groove 35 through the opening of the fixing groove 34 on one side of the fixing seat 3, so that the connecting block 5 is moved horizontally along the sliding groove 35 to the installation position. The positioning seat 2 is placed in the preset position of the fixing seat 3, so that the serrated concave surface at the bottom of the positioning seat 2 engages with the corresponding serrated convex surface at the top of the fixing seat 3. At the same time, the positioning protrusion 21 at the bottom of the positioning seat 2 is inserted into the positioning groove 33 to achieve dual positioning of longitudinal guidance and lateral limitation. Then, a screw is passed through the countersunk hole 20 of the positioning seat 2 and threadedly connected to the connecting screw hole 50 on the corresponding connecting block 5 and tightened, so that the positioning seat 2 is firmly locked on the fixing seat 3. Through the serrated engagement, the positioning protrusion and the positioning groove cooperation, the forward and backward and left and right movement of the positioning seat 2 is completely restricted, ensuring that there is no loosening after installation. The clamping adjustment assembly 4 is positioned between two fixed positioning seats 2, so that the positioning protrusion at the bottom of the transverse movable part 41 of the clamping adjustment assembly 4 is inserted into the positioning groove 33. Simultaneously, ensure that the guide sliders 402 on both sides of the vertical movable part 40 are initially engaged with the guide grooves 410 of the transverse movable part 41. Depending on the processing requirements, either single-sided clamping or double-sided simultaneous clamping can be selected. The single-sided clamping method involves bringing the clamping adjustment assembly 4 close to one of the positioning seats, such as... Figure 1 As shown, the workpiece 1 to be processed is placed between the positioning seat 2 and the transverse moving part 41 of the clamping adjustment assembly 4. Simultaneous clamping from both sides involves placing the clamping adjustment assembly 4 in the middle position of the two positioning seats 2, with one workpiece 1 to be processed placed on each side of the clamping adjustment assembly 4. After the workpiece is placed, tighten the screw passing through the through hole 401 of the vertical moving part 40, driving the vertical moving part 40 to move downward. The isosceles trapezoidal inclined surface of the vertical moving part 40 and the inclined surface of the horizontal moving part 41 press against each other. Combined with the precise guidance and limiting of the guide slider 402 and the guide groove 410, the axial locking force of the screw is efficiently converted into the horizontal clamping force of the horizontal moving part 41: When clamping on one side, the horizontal moving part 41 on one side moves laterally towards the positioning seat 2, rigidly pressing the workpiece between the positioning seat 2 and the horizontal moving part 41; when clamping on both sides, the two horizontal moving parts 41 move laterally in opposite directions simultaneously, pressing the workpieces on both sides between the horizontal moving part 41 and the corresponding positioning seat 2, so as to achieve simultaneous and reliable clamping of the two workpieces.
[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A workpiece positioning fixture for a metalworking machine tool, characterised in that, The utility model relates to a fixing base, the middle part of the fixing base is provided with a fixing groove along its length, two sliding grooves are opened in the side wall of the fixing groove, a plurality of connecting blocks are slidably arranged in the sliding grooves, connecting screw holes are arranged on the connecting blocks, a sawtooth-shaped convex surface is arranged on the top surface of the fixing base on one side or both sides of the fixing groove along the length direction of the fixing base, at least two positioning seats are arranged on the fixing base, a sawtooth-shaped concave surface is arranged on the bottom surface of the positioning seat, a counterbore is arranged on the positioning seat, a clamping and adjusting assembly is arranged between two adjacent positioning seats, a workpiece to be processed is placed between the clamping and adjusting assembly and one of the positioning seats, the clamping and adjusting assembly comprises horizontal moving parts on both sides and a vertical moving part between the two horizontal moving parts, the longitudinal section of the vertical moving part is isosceles trapezoidal structure, and a through hole is arranged in the middle part, the side of the horizontal moving part close to the vertical moving part is an inclined surface, and the inclination thereof matches the inclination of the side of the vertical moving part, wherein a screw is threadedly connected through the counterbore of the positioning seat and the connecting screw hole of the connecting block at the corresponding position, so as to lock the positioning seat on the fixing base, and another screw is threadedly connected through the through hole of the vertical moving part and the connecting screw hole of the connecting block at the corresponding position, and the longitudinal displacement of the vertical moving part is adjusted through the screw, so as to drive the horizontal movement of the horizontal moving part.
2. A workpiece positioning fixture for a metalworking machine tool according to claim 1, wherein The top surface of the fixing base is provided with a positioning groove parallel to the fixing groove on one side of the fixing groove, the bottom of the positioning seat and / or the horizontal moving part is provided with a positioning protrusion downward, the positioning protrusion is matched with the positioning groove and constitutes a sliding connection.
3. A workpiece positioning fixture for a metalworking machine tool according to claim 1, wherein The two sides of the vertical moving part are symmetrically provided with guide sliding blocks, the cross section of the guide sliding block is T-shaped structure and is inclined, and the inclination thereof is consistent with the inclination of the waist of the isosceles trapezoidal structure of the vertical moving part, the side of the horizontal moving part close to the vertical moving part is provided with a guide sliding groove matched with the guide sliding block in sliding connection.
4. A workpiece positioning fixture for a metalworking machine tool according to claim 3, wherein The cross section of the guide sliding block is constant T-shaped structure, the cross section of the guide sliding groove is matched with the cross section of the guide sliding block and is also constant.
5. A workpiece positioning fixture for a metalworking machine tool according to claim 1, wherein The tooth shapes of the sawtooth-shaped convex surface are consistent and are uniformly distributed along the length direction of the fixing base.
6. A workpiece positioning fixture for a metalworking machine tool according to claim 1, wherein The bottom surface of the fixing base is provided as a wavy concave-convex surface.