A non-standard part machining clamp for precision machine tools

Abstract

The utility model discloses a kind of non-standard part processing clamps for precision machine tool, it is related to machine tool fixture technical field, including bottom plate, it is characterized by: the upper surface of the bottom plate is equipped with four groups of the arm assembly that can be gathered, the position of the upper surface of the bottom plate and each group The arm assembly contact is reserved with stroke groove, the top of the bottom plate is centrally located and is equipped with the rectangular frame of bearing metal parts, the rectangular frame is equipped with bearing plate inside sleeve.The utility model utilizes cylinder to push base to slide along stroke groove by connecting piece, to drive the clamping plate to contact workpiece side wall, its slider can be adjusted position along slide rail transversely, fixed by bolt of lug and locking screw hole, adapt to different size workpiece, when L plate is axially lifted along threaded rod, realize the fine adjustment of clamping height by increasing or decreasing the number of pad, ensure that the clamping plate accurately matches workpiece profile, can support quick replacement to adapt to special-shaped workpiece, significantly improve the versatility of fixture.

Description

Technical Field

[0001] This utility model relates to the field of machine tool fixture technology, specifically a fixture for machining non-standard parts for precision machine tools. Background Technology

[0002] Currently, for some non-standard parts, specialized fixtures need to be designed to accommodate their height and position, thus enabling tool setting operations. With the continuous development of automated machining technology and high-precision machine tools, the application of high-precision positioning and clamping mechanisms is increasing. Among them, floating support fixtures are one of the more common workpiece positioning mechanisms.

[0003] When positioning, the floating support fixture may cause slight displacement or vibration of the workpiece during the machining process, which may affect the positioning accuracy and machining quality.

[0004] Currently, although floating support fixtures can adapt to changes in workpiece height, they lack a rigid locking mechanism and are prone to loosening under high-speed machining or heavy cutting conditions, which can lead to problems such as positional deviation and dimensional deviation of non-standard parts. Traditional fixtures are less adaptable to irregular or asymmetrical workpieces and require frequent replacement or customization, which increases production costs and preparation time. Therefore, a fixture for machining non-standard parts for precision machine tools is proposed. Utility Model Content

[0005] Based on this, the present invention aims to at least solve one of the technical problems existing in the prior art. To this end, a fixture for machining non-standard parts for precision machine tools is proposed, which can meet the positioning of various non-standard parts, thereby improving the machining efficiency of parts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fixture for machining non-standard parts for precision machine tools, comprising a base plate, the upper surface of which is provided with four sets of clamping arm assemblies that can converge in a central manner, a stroke groove being reserved at the contact position between the upper surface of the base plate and each set of clamping arm assemblies, and a rectangular frame for supporting metal parts being mounted at the center of the top of the base plate, with a load-bearing plate fitted inside the rectangular frame;

[0007] The clamping arm assembly includes a base that slides within a rectangular frame. A slide rail is fixed to the top of the base. A slider that can slide along its length is fitted onto the top of the base. Two sets of threaded rods are fixed to the top edge of the slider. An L-plate is fitted onto the outer wall of the two sets of threaded rods. Clamping plates capable of clamping metal parts are fitted onto the side wall of the L-plate. A pad that abuts against the bottom of the L-plate is fitted onto the upper surface of the slider in a stacked manner. A nut that is threaded to the outer wall of the threaded rod is provided on the top of the L-plate.

[0008] As a preferred technical solution, the clamping arm assembly also includes two sets of threaded holes opened on the top of the base, the L-plate can move along the axial direction of the threaded holes and the threaded rod, and the two sides of the clamping plate are detachably connected to the L-plate by screws.

[0009] As a preferred technical solution, the bottom of the base plate is provided with four sets of cylinders in a circular array, and the output end of each set of cylinders is provided with a connector connected to the bottom of the base. The bottom of the base plate is provided with a clearance groove that communicates with the stroke groove.

[0010] As a preferred technical solution, one side of the slider is provided with an integrally formed ear plate, and the top of the slide rail is provided with multiple sets of locking screw holes along its length direction. The ear plate is connected to the locking screw holes by locking bolts.

[0011] As a preferred technical solution, a rectangular frame is welded to the bottom outer edge of the rectangular frame, and the rectangular frame is fixed to the top of the base plate by positioning bolts. Multiple sets of positioning bolt holes are opened on the top of the base plate.

[0012] As a preferred technical solution, a support frame is welded between the two adjacent sets of cylinders at the bottom of the base plate. The bottom of the support frame is in contact with the ground and can support the cylinder in a suspended state.

[0013] As a preferred technical solution, each set of pads has a pre-set positioning rectangular groove on the top and a protrusion at the bottom that matches the rectangular groove.

[0014] In summary, the present invention has the following main advantages:

[0015] This utility model utilizes a cylinder to push the base to slide along the stroke groove through a connecting piece, causing the clamping plate to contact the side wall of the workpiece. Its slider can be adjusted laterally along the slide rail and fixed by bolts in the ear plate and locking screw hole to adapt to workpieces of different sizes. When the L plate moves up and down along the threaded rod axially, the clamping height can be finely adjusted by increasing or decreasing the number of pads to ensure that the clamping plate accurately matches the workpiece contour. It can support quick replacement to adapt to irregular workpieces and significantly improve the versatility of the fixture. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is an unfolded structural diagram of the base plate and rectangular frame of this utility model;

[0018] Figure 3 This is a bottom view of the structure of this utility model;

[0019] Figure 4 This is an unfolded view of the clamping arm assembly of this utility model.

[0020] In the diagram: 100, base plate; 110, rectangular frame; 111, load-bearing plate; 120, positioning bolt hole; 130, stroke groove; 140, clearance groove; 150, support frame; 160, cylinder;

[0021] 200, Clamping arm assembly; 210, Base; 220, Slider; 221, Ear plate; 230, Slide rail; 231, Locking screw hole; 240, Connector; 250, Threaded rod; 260, Pad; 270, L-plate; 271, Threaded hole; 280, Clamping plate; 290, Nut. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The embodiments of this utility model will be described below based on its overall structure.

[0024] A fixture for machining non-standard parts for precision machine tools, such as Figures 1 to 4 As shown, it includes a base plate 100, and four sets of clamping arm assemblies 200 that can converge in the middle are provided on the upper surface of the base plate 100. A stroke groove 130 is reserved at the position where the upper surface of the base plate 100 contacts each set of clamping arm assemblies 200. A rectangular frame 110 for supporting metal parts is installed at the center of the top of the base plate 100. A load-bearing plate 111 is fitted inside the rectangular frame 110.

[0025] The clamping arm assembly 200 includes a base 210 that slides within a rectangular frame 110. A slide rail 230 is fixed to the top of the base 210. A slider 220 that can slide along its length is fitted onto the top of the base 210. Two sets of threaded rods 250 are fixed to the top edge of the slider 220. An L-plate 270 is fitted onto the outer wall of the two sets of threaded rods 250. A clamping plate 280 capable of clamping metal parts is fitted onto the side wall of the L-plate 270. A pad 260 that abuts against the bottom of the L-plate 270 is fitted onto the upper surface of the slider 220 in a stacked manner. A nut 290 that is threadedly connected to the outer wall of the threaded rod 250 is provided on the top of the L-plate 270.

[0026] It is worth mentioning that you should refer to this carefully. Figure 4 The clamping arm assembly 200 also includes two sets of threaded holes 271 opened on the top of the base 210. The L plate 270 can move along the axial direction of the threaded holes 271 and the threaded rod 250. The two sides of the clamping plate 280 are detachably connected to the L plate 270 by screws.

[0027] The slider 220 has an integrally formed ear plate 221 on one side, and the top of the slide rail 230 has multiple sets of locking screw holes 231 along its length. The ear plate 221 is connected to the locking screw holes 231 by locking bolts.

[0028] A rectangular frame is welded to the bottom outer edge of the rectangular frame 110. The rectangular frame is fixed to the top of the base plate 100 by positioning bolts. Multiple sets of positioning bolt holes 120 are opened on the top of the base plate 100.

[0029] The non-standard parts to be processed are placed on the upper surface of the load-bearing plate 111. Then, the four sets of cylinders 160 are started. Their output ends push the base 210 to slide along the stroke groove 130 towards the center through the connector 240, so that the clamping arm assembly 200 can be brought together synchronously, which can clamp the parts on the load-bearing plate 111.

[0030] The operator adjusts the position of the slider 220, and uses the ear plate 221 to engage with the locking screw hole 231 on the slide rail 230 to fix the lateral displacement of the slider 220 with the locking bolt to accommodate parts of different sizes. Then, the nut 290 is loosened, and the L plate 270 is moved up and down along the axis of the threaded rod 250. The height of the clamping plate 280 is adjusted by using the number of threaded holes 271 and pads 260 to ensure that it is tightly against the edge of the part.

[0031] Alternatively, the screws on both sides of the clamping plate 280 can be unscrewed to separate it from the L plate 270. The clamping plate 280 can be replaced according to the actual situation (width or thickness of non-standard parts), and the rectangular frame 110 and load-bearing plate 111 of different sizes (including length, width and height) can be replaced to cooperate with the clamping arm assembly 200 to meet the positioning of various non-standard parts.

[0032] Please refer to this carefully. Figure 3 The bottom of the base plate 100 is provided with four sets of cylinders 160 in a circular array. The output end of each set of cylinders 160 is provided with a connector 240 connected to the bottom of the base 210. The bottom of the base plate 100 is provided with a clearance groove 140 that communicates with the stroke groove 130.

[0033] A support frame 150 is welded between two adjacent sets of cylinders 160 at the bottom of the base plate 100. The support frame 150 is in contact with the ground and can support the cylinders 160 in a suspended state.

[0034] The support frame 150 stably supports the cylinder 160 to prevent it from vibrating while suspended, and the clearance groove 140 provides movement space for the connector 240 to ensure machining accuracy.

[0035] Please refer to this carefully. Figure 4 Each pad 260 has a pre-set positioning rectangular groove on its top and a protrusion at its bottom that matches the rectangular groove.

[0036] Precise positioning is achieved through the interlocking of the protrusions and rectangular grooves, effectively preventing horizontal displacement when the pads 260 are stacked, and ensuring that the pads 260 can be accurately positioned and smoothly disassembled when stacked.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A fixture for machining non-standard parts for precision machine tools, comprising a base plate (100), characterized in that: The upper surface of the base plate (100) is provided with four sets of clamping arm assemblies (200) that can converge in the center. The upper surface of the base plate (100) is provided with a stroke groove (130) at the position where it contacts each set of clamping arm assemblies (200). The top of the base plate (100) is fitted with a rectangular frame (110) for supporting metal parts at the center position. A load-bearing plate (111) is fitted inside the rectangular frame (110). The clamping arm assembly (200) includes a base (210) that slides within a rectangular frame (110). A slide rail (230) is fixed to the top of the base (210). A slider (220) that can slide along its length is fitted onto the top of the base (210). Two sets of threaded rods (250) are fixed to the top edge of the slider (220). An L-plate (270) is fitted onto the outer wall of the two sets of threaded rods (250). A clamping plate (280) capable of clamping metal parts is fitted onto the side wall of the L-plate (270). A pad (260) that abuts against the bottom of the L-plate (270) is fitted onto the upper surface of the slider (220) in a stacked manner. A nut (290) that is threaded to the outer wall of the threaded rod (250) is provided on the top of the L-plate (270).

2. The fixture for machining non-standard parts for precision machine tools according to claim 1, characterized in that: The clamping arm assembly (200) also includes two sets of threaded holes (271) opened on the top of the base (210). The L plate (270) can move along the axial direction of the threaded holes (271) and the threaded rod (250). The two sides of the clamping plate (280) are detachably connected to the L plate (270) by screws.

3. A fixture for machining non-standard parts for precision machine tools according to claim 1, characterized in that: The bottom of the base plate (100) is provided with four sets of cylinders (160) in a circular array. The output end of each set of cylinders (160) is provided with a connector (240) connected to the bottom of the base (210). The bottom of the base plate (100) is provided with a relief groove (140) that communicates with the stroke groove (130).

4. A fixture for machining non-standard parts for precision machine tools according to claim 1, characterized in that: The slider (220) has an integrally formed ear plate (221) on one side, and the top of the slide rail (230) has multiple sets of locking screw holes (231) along its length direction. The ear plate (221) is connected to the locking screw holes (231) by locking bolts.

5. A fixture for machining non-standard parts for precision machine tools according to claim 1, characterized in that: A rectangular frame is welded to the bottom outer edge of the rectangular frame (110), and the rectangular frame is fixed to the top of the base plate (100) by positioning bolts. Multiple sets of positioning bolt holes (120) are opened on the top of the base plate (100).

6. A fixture for machining non-standard parts for precision machine tools according to claim 3, characterized in that: A support frame (150) is welded between the two adjacent sets of cylinders (160) at the bottom of the base plate (100). The support frame (150) is in contact with the ground and can support the cylinders (160) in a suspended state.

7. A fixture for machining non-standard parts for precision machine tools according to claim 1, characterized in that: Each set of pads (260) has a pre-set positioning rectangular groove on the top and a protrusion at the bottom of the pad (260) that matches the rectangular groove.

Images