Convenient-to-clamp laser cutting clamp for PDC (Polycrystalline Diamond Compact)

Abstract

The utility model discloses a convenient clamping laser cutting fixture for PDC (polycrystalline diamond compact), which belongs to the technical field of superhard materials and comprises a fixture body and a matched clamping plate, the fixture body comprises an outer frame, an ejector rod, a connecting rod, a rotating handle and a compression spring, a clamping through hole is arranged in the outer frame, the ejector rod is slidably connected with the outer frame, and the connecting rod is connected with the outer frame. The connecting rod is fixedly connected with the portion, located outside the outer frame, of the ejector rod, the compression spring is arranged outside the portion, located inside the outer frame, of the ejector rod in a sleeving mode, the rotating handle is fixedly connected with the connecting rod, and an eccentric rotating buckle is arranged at the end of the rotating handle. The matched clamping plate comprises a bottom plate, and the eccentric rotating buckle can be buckled, supported and blocked on the edge of the bottom plate. According to the clamp, stable fastening force can be provided for a workpiece at different temperatures, and the phenomenon of unstable clamping caused by cold and hot deformation of the clamp in the machining process is avoided; and compared with a traditional mode that single workpieces are assembled and disassembled one by one, the efficiency is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to superhard material technical field, especially a kind of PDC laser cutting fixture of convenient clamping. BACKGROUND

[0002] PDC (poly-crystalline diamond compact) refers to diamond compact, it is as the most main drilling force component in current drilling industry, has high hardness, high wear resistance, good impact resistance and welding performance and other excellent characteristics in application process, can adapt to feel most geological exploration, coalfield mining, oil and gas exploitation and other environmental needs of use. Conventional diamond compact is cylindrical, considering the need of drill bit design in actual use, PDC product can also be cut into the shape required by laser, electric spark and other various ways. Because current electric spark cost is too high, it is difficult to adapt to the cost requirement of current drilling field, and laser cutting processing becomes the most mainstream PDC product processing mode.

[0003] In the existing laser cutting processing process, PDC product is usually fixed on corresponding fixture by bolt, which brings two problems: ①fixture is easily deformed by thermal expansion and cold shrinkage in cutting process affected by processing heat, leading to PDC product loose in processing process, affecting processing precision, and even falling off and other phenomena; ②PDC product needs to be repeatedly loosened and tightened, and the assembly and disassembly time of conventional 16-piece clamping fixture is basically equivalent to conventional cutting time, which is a great loss to current cutting efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems existing in the laser cutting process of diamond compact, provides a kind of PDC laser cutting fixture of convenient clamping, on the one hand, spring is used to replace bolt, so as to make up for the clamping force deficiency caused by fixture thermal deformation, ensure the stability of product in the whole processing process, on the other hand, unilateral unified clamping mode is adopted, greatly reduce the time consumption when clamping and taking off product, can effectively guarantee production efficiency.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The utility model provides a kind of PDC with laser cutting fixture of easy clamping, including fixture body and matched clamping plate, the fixture body includes outer frame, top rod, connecting rod, rotating handle and compression spring, the outer frame inside is equipped with clamping through-hole, the top rod is slidably connected with the outer frame, the connecting rod is fixedly connected with the top rod and the part of outer frame, the compression spring is sleeved on the part of top rod in outer frame, the rotating handle is fixedly connected with the connecting rod, and the end of rotating handle is equipped with eccentric rotation buckle;The matched clamping plate includes bottom plate, the bottom plate is fixed with positioning block, and the positioning block is equipped with clamping groove for fixing outer frame;The eccentric rotation buckle can be buckled and blocked at the edge of bottom plate.

[0007] Wherein, the outer frame is rectangular or square;The clamping through-hole is symmetrical along its own central axis, and the clamping through-hole is multiple, and multiple clamping through-holes are symmetrically distributed in two rows along the central axis of outer frame, and the side opposite to the two rows of clamping through-holes is sawtoothed, and the V-shaped groove formed by sawtooth is used for PDC workpiece positioning.

[0008] Wherein, the end of the top rod is provided with a contact part, and the top rod corresponds to the position of the V-shaped groove.

[0009] Wherein, the bottom plate is a double-sided flat plate, and the surface flatness error of the side in contact with the fixture body is ≤0.05mm.

[0010] Wherein, the positioning block is fixedly connected with the bottom plate by bolts.

[0011] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0012] 1. The utility model adopts compression spring as fastener, can provide stable fastening force to workpiece at different temperatures, avoids the phenomenon that clamping is unstable caused by cold and hot deformation in the processing process.

[0013] 2. The utility model utilizes connecting rod design, realizes the quick loading and unloading of single-sided workpiece, and compared with the traditional way of loading and unloading single workpiece one by one, the efficiency is obviously improved.

[0014] 3. The utility model adopts the mechanism of rotating handle, realizes lever buckle with the side of bottom plate, reduces the time of force when personnel loads and unloads, greatly saves manpower.

[0015] 4. The utility model adopts split design for the bottom plate and the positioning clamping groove on the upper part, can ensure that the clamping groove is removed after long-term use of the bottom, the bottom surface is conveniently ground and finished, ensures the surface flatness, so as to reduce the processing error.

[0016] 5. The device of the utility model has simple overall structure and high reliability, and can be made at low cost, which has effective cost advantage for existing market environment. Attached Figure Description

[0017] Figure 1 Schematic diagram of the clamp body structure in this utility model;

[0018] Figure 2 Schematic diagram of the combination of the clamp body and the clamping plate of this utility model;

[0019] Figure 3 A schematic diagram of the structure for loading and unloading PDC workpieces in this utility model;

[0020] Figure 4 for Figure 3 A bottom view;

[0021] Figure 5 This utility model presents a schematic diagram showing the relationship between the eccentric rotating buckle at the end of the rotating handle and the base plate before and after rotation.

[0022] In the diagram, 1. Outer frame, 2. Top rod, 3. Compression spring, 4. Connecting rod, 5. Rotating handle, 6. Base plate, 7. Positioning slot, 8. Bolt, 9. PDC workpiece, 10. Positioning block, 11. Contact part. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The convenient clamping laser cutting fixture for PDC involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1 to 5The utility model provides a kind of PDC with laser cutting clamp of convenient clamping, including clamp body and matched clamping plate, clamp body includes outer frame 1, top rod 2, connecting rod 4, rotating handle 5 and compression spring 3, outer frame 1 inside is equipped with clamping through-hole, top rod 2 is slidably connected with outer frame 1, connecting rod 4 is fixedly connected with the part of top rod 2 in the outside of outer frame 1, connecting rod 4 and top rod 2 can be freely moved along the axial direction of top rod 2, compression spring 3 is sleeved on the part of top rod 2 in the outside of outer frame 1, rotating handle 5 is fixedly connected with connecting rod 4, and the end of rotating handle 5 is equipped with eccentric rotation buckle;The matched clamping plate includes bottom plate 6, and the bottom plate 6 is fixed with positioning block 10, and the positioning block 10 is equipped with the clamping groove for fixing outer frame 1;Rotating eccentric rotation buckle can support buckle in the edge of bottom plate 6, adopt the mechanism of rotating handle 5, and realize pull rod buckle with the side of bottom plate 6, reduce the time of effort when personnel is loaded and unloaded, greatly save manpower.Utilizing connecting rod 4 design, the quick loading and unloading of one-sided workpiece is realized, compared with the traditional mode of single workpiece one by one loading and unloading, efficiency is obviously improved.

[0025] Wherein, outer frame 1 is rectangular or square;Clamping through-hole is symmetrical along its own central axis, and clamping through-hole is multiple, multiple clamping through-holes are distributed symmetrically along the central axis of outer frame 1 in two rows, and the opposite side of two rows of clamping through-holes is zigzag, and the V-shaped groove formed by zigzag is used for PDC workpiece positioning, and top rod 2 is tightly positioned in V-shaped groove under the action of compression spring 3, and top rod 2 is tightly positioned in V-shaped groove under the action of compression spring 3, and compression spring 3 is used as fastener, which can provide stable fastening force for workpiece at different temperatures, to avoid unstable clamping phenomenon caused by cold and hot deformation of clamp during machining.

[0026] Wherein, the end of top rod 2 is equipped with abutting part 11, and the position of top rod 2 corresponds to V-shaped groove.

[0027] Wherein, bottom plate 6 is double-sided flat plate, and the surface flatness error of the side in contact with clamp body is less than or equal to 0.05mm, to ensure the surface flatness, thereby reducing machining error.Moreover, bottom plate 6 and positioning block 10 on its upper part adopt split design, to ensure that positioning block 10 is unloaded after long-term use of bottom, and bottom surface is conveniently ground and finished, to ensure the surface flatness, thereby reducing machining error.

[0028] Wherein, for the dismounting of positioning block 10, positioning block 10 is fixedly connected with bottom plate 6 through bolt 8.

[0029] The cutting clamp of the embodiment realizes the quick clamping of PDC workpiece to be cut at lower cost, saves clamping time;Meanwhile, spring is used as fastening component, to avoid the stress difference caused by cold and hot deformation of clamp during machining, to avoid the loosening of workpiece;The split design of clamping plate can conveniently repair when bottom plate 6 is abraded after use.

[0030] Finally, it should be noted that: the utility model discloses the embodiment figure, only relate to the structure of the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

Claims

1. A convenient laser cutting fixture for PDC (Power Distribution Center) clamping, characterized in that: The fixture includes a clamp body and a matching clamping plate. The clamp body includes an outer frame, a top rod, a connecting rod, a rotating handle, and a compression spring. The outer frame has a clamping through hole inside. The top rod is slidably connected to the outer frame. The connecting rod is fixedly connected to the portion of the top rod outside the outer frame. The compression spring is sleeved on the portion of the top rod inside the outer frame. The rotating handle is fixedly connected to the connecting rod, and the end of the rotating handle has an eccentric rotating buckle. The matching clamping plate includes a base plate, on which a positioning block is fixed. The positioning block has a slot for fixing the outer frame. The eccentric rotating buckle can lock and support the edge of the base plate.

2. The convenient clamping laser cutting fixture for PDC according to claim 1, characterized in that: The outer frame is rectangular or square; the clamping through holes are symmetrical along their own central axis, and there are multiple clamping through holes. The multiple clamping through holes are distributed in two rows symmetrically along the central axis of the outer frame. The opposite side of the two rows of clamping through holes is serrated, and the V-shaped groove formed by the serrations is used for PDC workpiece positioning.

3. A convenient clamping laser cutting fixture for PDC according to claim 2, characterized in that: The end of the push rod is provided with an abutment part, and the position of the push rod corresponds to that of the V-groove.

4. A convenient clamping laser cutting fixture for PDC according to claim 1, characterized in that: The base plate is a double-sided flat plate, and the surface flatness error of the side that contacts the fixture body is ≤0.05mm.

5. A convenient clamping laser cutting fixture for PDC according to claim 1, characterized in that: The positioning block is fixedly connected to the base plate by bolts.

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