Cylindrical workpiece clamp tool

Abstract

The utility model discloses a cylindrical workpiece clamp tool, which belongs to the technical field of lathe clamps, is used for a four-axis machining center, and comprises a flange frame, a plastic film, a base plate, a positioning column I, a positioning column II, a fixed pressing plate and a pressing nut, the first positioning column and the second positioning column are fixedly connected with the flange frame, a plastic film and a base plate are sequentially inserted into the first positioning column and the second positioning column in a matched mode, a workpiece to be machined is inserted between the base plate and the plastic film, a fixing pressing plate is inserted into the first positioning column and the second positioning column, the base plate is extruded through a pressing nut, and the workpiece to be machined is extruded and fixed. The problems that in the prior art, clamping is not firm and clamping slipping occurs when a fixing clamp clamps a cylindrical workpiece are solved, a plurality of cylindrical workpieces to be machined can be machined at the same time, the machining accuracy and machining precision of cylindrical workpiece machining are improved, the workpiece machining quality is improved, and meanwhile the machining efficiency is improved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of lathe fixtures, in particular to a cylindrical workpiece fixture. Background Art

[0002] The metal workpiece products industry includes structural metal product manufacturing, metal tool manufacturing, container and metal packaging container manufacturing, stainless steel and similar daily metal product manufacturing, etc. In the process of processing metal workpiece products, especially when processing cylindrical workpieces, it is usually necessary to fix the cylindrical workpiece by a fixing fixture.

[0003] The existing Chinese utility model patent CN216398740U provides a tooling fixture for a cylindrical workpiece, a clamping seat and a fastening mechanism arranged on the clamping seat, a first V-shaped groove is arranged on the end face of the clamping end, and a second V-shaped groove is arranged on the side of the pad facing the first V-shaped groove. The cylindrical workpiece is clamped by the first V-shaped groove and the second V-shaped groove. This device can only process the two end faces of the cylindrical workpiece after clamping, and there are problems such as being unable to process the side faces of the workpiece and having a small number of processed faces.

[0004] The existing Chinese utility model patent CN221658642U provides a quick equal-division fixture for circular workpiece processing, including a center positioning component and an equal-division positioning component. The center positioning component includes a first clamping structure and a second clamping structure. The first clamping structure and the second clamping structure are connected to the workbench of the machine tool by bolts to form an easily assembled and disassembled connection structure, which can process the side of the cylindrical workpiece. However, there is a problem of adding a single workpiece at a time and the cylindrical workpiece needs to be processed to a sufficient length before it can be clamped.

[0005] When the existing fixing fixture clamps a cylinder for multi-directional processing, the cylindrical workpiece to be processed needs to be disassembled and then reprocessed, which increases the operation intensity and reduces the processing accuracy. At the same time, most of the workpieces to be clamped need to have sufficient clamping length, which increases the construction difficulty and makes it impossible to process multiple cylindrical workpieces at the same time, resulting in low work efficiency.

[0006] Therefore, it is urgent to develop a cylindrical workpiece fixture to solve the above problems. Utility Model Content

[0007] The utility model discloses a cylindrical workpiece clamp tooling, which is used in conjunction with a four-axis machining center, and includes: a flange frame, a plastic film, a pad, a first positioning column, a second positioning column, a fixed pressure plate, a clamping screw and a fixing nut. The flange frame is clamped and fixed to the main shaft seat of the four-axis machining center, and the left side of the flange frame is fixedly connected with the first positioning column and the second positioning column. The plastic film and the pad are inserted into the first positioning column and the second positioning column, and the workpiece to be processed is inserted between the pad and the plastic film in sequence. A fixed pressure plate is provided on the top of the first positioning column and the second positioning column, and the fixed pressure plate is clamped and fixed by a fixing nut. The clamping screw is provided in the middle of the fixed pressure plate, and the pad is squeezed by rotating the clamping screw, and the pad squeezes inward to clamp the workpiece to be processed.

[0008] Preferably, a first positioning column and a second positioning column are symmetrically provided on the left side of the flange frame in the vertical direction, and a triangular concave platform is provided on the left side of the flange frame in the horizontal direction, and the top corner of the concave platform is a semi-cylindrical structure protruding outward.

[0009] Preferably, the two ends of the plastic film are "U"-shaped structures, and the left "U"-shaped aperture corresponds to the first diameter of the positioning column, and the right "U"-shaped aperture corresponds to the second diameter of the positioning column. The inner and outer sides of the middle part of the plastic film are provided with grooves corresponding to the size of the workpiece to be processed. The plastic film can be multiple, the shape of the pad corresponds to the shape of the plastic film, and the outer side of the middle part of the pad is a planar structure, and the inner side of the middle part of the pad is provided with a groove corresponding to the size of the workpiece to be processed.

[0010] Preferably, the diameter of the positioning column 1 is larger than that of the positioning column 2, the front ends of the positioning column 1 and the positioning column 2 are both provided with threaded rods, and the shaft diameters of the positioning column 1 and the positioning column 2 are both larger than the diameters of the threaded rods.

[0011] Preferably, through holes corresponding to the hole diameter of the threaded rod are provided on both sides of the fixed pressure plate, a threaded hole is provided in the middle of the fixed pressure plate, and the hole diameter of the clamping screw corresponds to the diameter of the threaded hole.

[0012] Preferably, the hole diameter of the fixing nut corresponds to the hole diameter of the threaded rod, and the fixing nut and the threaded rod are bolted to fix the fixed pressure plate.

[0013] Beneficial effect: The utility model clamps and positions a cylindrical workpiece to be processed by arranging a plastic film and a pad, and proposes a cylindrical workpiece clamp tooling. The plastic film and the pad are supported by arranging a positioning column one and a positioning column two on the flange frame. The diameter of the positioning column one is larger than the diameter of the positioning column two, which facilitates the plastic film and the pad to be installed in reverse during use. The cylindrical workpiece to be processed is clamped by tightening the fixed pressure plate through the clamping screw, making the clamping process more secure.

[0014] The utility model connects the flange frame with the main shaft seat of the four-axis machining center by clamping, and the fixture tooling can rotate 360 ​​degrees, so that a larger area of ​​the cylindrical workpiece can be processed, and the number of times the workpiece to be processed is replaced can be reduced during processing, thereby improving work efficiency, reducing labor intensity, and being able to process multiple cylindrical workpieces to be processed.

[0015] The utility model has a simple structure and strong practical operability, and can firmly fix the cylindrical workpiece to be processed without slipping during the processing. The fixture tooling is driven to rotate by a four-axis machining center to realize multi-angle processing, thereby improving work efficiency and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a cylindrical workpiece fixture;

[0018] Figure 2 It is a structural schematic diagram of a cylindrical workpiece fixture;

[0019] Figure 3 It is the front view of the cylindrical workpiece fixture;

[0020] Figure 4 It is a structural schematic diagram of a fixed pressure plate;

[0021] Figure 5 It is a schematic diagram of the structure of the plastic film;

[0022] Figure 6 is a schematic diagram of the structure of the pad;

[0023] Figure 7 is a schematic diagram of the structure of the workpiece;

[0024] In the figure: 1. flange frame, 2. plastic film, 3. pad, 4. positioning column one, 5. positioning column two, 6. fixed pressure plate, 7. clamping screw, 8. workpiece, 9. recessed table, 10. threaded rod, 11. groove, 12. threaded hole, 13. spindle seat of four-axis machining center, 14. fixing nut. DETAILED DESCRIPTION

[0025] A cylindrical workpiece fixture, used in conjunction with a four-axis machining center, includes: a flange frame 1, a plastic film 2, a pad 3, a positioning column 1 4, a positioning column 2 5, a fixed pressure plate 6 and a clamping screw 7. The flange frame 1 is clamped and fixed with a spindle seat 13 of the four-axis machining center. The rotation of the spindle seat 13 of the four-axis machining center drives the fixture to rotate. The left side of the flange frame 1 is fixedly connected with a positioning column 1 4 and a positioning column 2 5. The plastic film 2 and the pad 3 are inserted into the positioning column 1 4 and the positioning column 2 5. The number of inserted plastic films 2 is selected according to actual needs. , insert the workpiece 8 to be processed between the pad 3 and the plastic film 2, and clamp the cylindrical workpiece 8 to be processed through the grooves 11 provided on the plastic film 2 and the pad 3. A fixed pressure plate 6 is provided on the top of the positioning column 1 4 and the positioning column 2 5. The through holes on both sides of the fixed pressure plate 6 pass through the positioning column 1 4 and the positioning column 2 5 respectively. The fixed pressure plate 6 is clamped and fixed by a fixing nut 14. The clamping screw 7 is provided in the middle of the fixed pressure plate 6. The pad 3 is squeezed by rotating the clamping screw 7, and the pad 3 is squeezed inward to clamp and fix the workpiece 8 to be processed.

[0026] In some embodiments, a positioning column 1 4 and a positioning column 2 5 are symmetrically provided in the vertical direction on the left side of the flange frame 1, and a triangular recess 9 is provided in the horizontal direction on the left side of the flange frame 1. The top corner of the recess 9 is a semi-cylindrical structure protruding outward, corresponding to the shape of the cylindrical workpiece 8 to be processed. The recess 9 provides a processing space for the processing tool for processing the cylindrical workpiece 8.

[0027] In some embodiments, the diameter of the positioning column 1 4 is larger than the diameter of the positioning column 2 5, which is convenient for limiting the installation direction of the plastic film 2 and the pad 3 to prevent the plastic film 2 and the pad 3 from being installed upside down. The front ends of the positioning column 1 4 and the positioning column 2 5 are both provided with a threaded rod 10, and the shaft diameters of the positioning column 1 4 and the positioning column 2 5 are both larger than the diameter of the threaded rod 10. The middle parts of the positioning column 1 4 and the positioning column 2 5 limit the fixed position of the fixed pressure plate 6.

[0028] In some embodiments, both ends of the plastic film 2 are "U"-shaped structures, and the left "U"-shaped aperture corresponds to the diameter of the positioning column 4, and the right "U"-shaped aperture corresponds to the diameter of the positioning column 5. The inner and outer sides of the middle part of the plastic film 2 are provided with grooves 11 corresponding to the size of the workpiece 8 to be processed. The plastic film 2 can be multiple, the shape of the pad 3 corresponds to the shape of the plastic film 2, and the outer side of the middle part of the pad 3 is a plane structure, and the inner side of the middle part of the pad 3 is provided with a groove 11 corresponding to the size of the workpiece 8 to be processed. The plastic film 2 and the pad 3 can just be inserted into the positioning column 4 and the positioning column 5, which is convenient for fixing the cylindrical workpiece 8 to be processed.

[0029] In some embodiments, through holes corresponding to the aperture of the threaded rod 10 are provided on both sides of the fixed pressure plate 6, a threaded hole 12 is provided in the middle of the fixed pressure plate 6, the aperture of the clamping screw 7 corresponds to the diameter of the threaded hole 12, and the clamping screw 7 applies extrusion force to the pad 3 through the threaded hole 12 to tighten and fix the cylindrical workpiece 8 to be processed.

[0030] In some embodiments, the hole diameter of the fixing nut 14 corresponds to the hole diameter of the threaded rod 10 , and the fixing nut 14 is bolted to the threaded rod 10 to fix the fixed pressure plate 6 .

[0031] Embodiment 1: In a specific implementation mode provided by the present utility model, as Figure 1-Figure 6 As shown, the flange frame 1 is clamped with the spindle seat 13 of the four-axis machining center, and a positioning column 1 4 and a positioning column 2 5 are fixedly connected on the left side of the flange frame 1. The lengths of the positioning column 1 4 and the positioning column 2 5 are adjusted as needed, and a plastic film 2 is inserted into the positioning column 1 4 and the positioning column 2 5. The number of inserted plastic films 2 is adjusted as needed, and a pad 3 is inserted outside the plastic film 2. Because the shaft diameter of the positioning column 1 4 is larger than the shaft diameter of the positioning column 2 5, the plastic film 2 and the pad 3 meet the requirements after installation, and the cylindrical workpiece 8 to be processed is placed on the pad 3, the plastic film 2 and the flange frame 1 The fixed pressure plate 6 is installed along the direction of the extended threaded rod 10 of the positioning column 1 4 and the positioning column 2 5, and the fixed pressure plate 6 is fixed by hinged connection with the threaded rod 10 using a fixing nut 14. At the same time, the clamping screw 7 is used to squeeze the pad 3 through the threaded hole 12 in the middle of the fixed pressure plate 6. After being subjected to the squeezing force, the cylindrical workpiece 8 to be processed is clamped and fixed. During processing, the rotation of the spindle seat 13 of the four-axis machining center is controlled to drive the cylindrical workpiece 8 to be processed to rotate, thereby realizing the clamping and multi-angle rotation of the cylindrical workpiece 8 to be processed.

[0032] Embodiment 2: In a specific implementation mode provided by the present utility model, as Figure 7 As shown, the surface of the cylindrical workpiece 8 to be processed has convex points, and the grooves 11 are provided on the inner and outer sides of the middle of the plastic film 2, and the corresponding positions have concave points, which further strengthen the clamping and fixation of the cylindrical workpiece 8 to be processed. The surface of the cylindrical workpiece 8 to be processed has concave points, and the grooves 11 are provided on the inner and outer sides of the middle of the plastic film 2, and the corresponding positions have convex points, which further strengthen the clamping and fixation of the cylindrical workpiece 8 to be processed.

[0033] Example 3: In a specific implementation manner provided by the utility model, two threaded holes 1 with different diameters are provided in the vertical direction on the left side of the flange frame 1, the tail ends of the positioning column 1 4 and the positioning column 2 5 are threaded structures, the middle parts of the positioning column 1 4 and the positioning column 2 5 are bare rod structures, the tops of the positioning column 1 4 and the positioning column 2 5 are threaded rod 10 structures with smaller axial diameters, and the tail ends of the positioning column 1 4 and the positioning column 2 5 are threadedly connected to the threaded hole 1 of the flange frame 1.

Claims

1. A cylindrical workpiece fixture used in conjunction with a four-axis machining center, characterized in that: include: Flange frame, plastic film, pad, positioning column one, positioning column two, fixed pressure plate, clamping screw and fixing nut, the flange frame is clamped and fixed with the spindle seat of the four-axis machining center, the left side of the flange frame is fixedly connected with positioning column one and positioning column two, the plastic film and pad are inserted into positioning column one and positioning column two, the workpiece to be processed is inserted between the pad and the plastic film in sequence, a fixed pressure plate is provided on the top of the positioning column one and positioning column two, the fixed pressure plate is clamped and fixed by a fixing nut, the clamping screw is provided in the middle of the fixed pressure plate, the pad is squeezed by rotating the clamping screw, and the pad is squeezed inward to clamp the workpiece to be processed.

2. A cylindrical workpiece fixture according to claim 1, characterized in that: A first positioning column and a second positioning column are symmetrically arranged in the vertical direction on the left side of the flange frame, and a triangular concave platform is arranged in the horizontal direction on the left side of the flange frame, and the top corner of the concave platform is a semi-cylindrical structure protruding outwards.

3. A cylindrical workpiece fixture according to claim 1, characterized in that: The two ends of the plastic film are "U"-shaped structures, and the left "U"-shaped aperture corresponds to the diameter of the first positioning column, and the right "U"-shaped aperture corresponds to the diameter of the second positioning column. The inner and outer sides of the middle part of the plastic film are provided with grooves corresponding to the size of the workpiece to be processed. The plastic film can be multiple, the shape of the pad corresponds to the shape of the plastic film, and the outer side of the middle part of the pad is a plane structure, and the inner side of the middle part of the pad is provided with a groove corresponding to the size of the workpiece to be processed.

4. A cylindrical workpiece fixture according to claim 1, characterized in that: The diameter of the first positioning column is larger than that of the second positioning column. The front ends of the first positioning column and the second positioning column are both provided with threaded rods. The shaft diameters of the first positioning column and the second positioning column are both larger than the diameter of the threaded rods.

5. A cylindrical workpiece fixture according to claim 1, characterized in that: Through holes corresponding to the hole diameter of the threaded rod are arranged on both sides of the fixed pressing plate, a threaded hole is arranged in the middle of the fixed pressing plate, and the hole diameter of the clamping screw corresponds to the diameter of the threaded hole.

6. A cylindrical workpiece fixture according to claim 1, characterized in that: The hole diameter of the fixing nut corresponds to the hole diameter of the threaded rod, and the fixing nut and the threaded rod are bolted to fix the fixed pressure plate.

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