Quick clamp for cold working of silicate material
The quick clamp with a flexible positioning sleeve and fastening assembly addresses the brittle nature of silicate materials by providing a buffer and shock-absorbing effect, ensuring uniform clamping and reducing vibration, thus enhancing processing precision and reducing defects.
Patent Information
- Application Number
- CN202420686462.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-03
AI Technical Summary
Silicate materials, being highly brittle and hard, are prone to cracking and breakage during cold processing due to uneven clamping force and vibration, especially in rough blanks with large aspect ratios, leading to defective products and processing errors.
A quick clamp with a flexible positioning sleeve and fastening clamp, featuring variable diameter holes and circumferential gaps, provides a buffer and shock-absorbing effect, ensuring uniform clamping and reducing relative vibration between the workpiece and tool.
The clamp effectively prevents breakage and vibration, allowing for precise positioning and uniform stress distribution, simplifying installation by accommodating external dimensional errors and reducing processing defects.
Smart Images
Figure CN222154724U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of cold processing of silicate materials, in particular to a quick clamp for cold processing of silicate materials. Background Art
[0002] The existing polyhedral rough blank made of silicate as a workpiece needs to be cold-processed inside, and the appearance of the workpiece has multiple rhombuses or curved surfaces.
[0003] Silicate materials are highly brittle, hard and easy to break. It is very easy to crack when clamped directly by high-hardness fixtures such as metal. Especially for rough blanks with large aspect ratios such as blocks and bars, when solid-state cold processing such as cutting and high-speed grinding is carried out, the clamping force is unevenly distributed, and the contact section between the workpiece and the tool is more susceptible to vibration, extrusion and breakage, resulting in defective products. At the same time, as a rough-processed product, the workpiece is allowed to have a certain processing error in its appearance and size, so a quick clamp is needed that can quickly position and effectively reduce the relative vibration between the rough blank and the tool. Utility Model Content
[0004] The utility model aims to solve the existing technical problems and provides a quick clamp for cold processing of silicate materials.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a quick clamp for cold processing of silicate materials, comprising a sleeve-fitted flexible positioning sleeve and a fastening clamp, the flexible positioning sleeve is provided with a positioning hole for positioning the workpiece; the fastening clamp comprises a clamping block assembly and a fastening assembly, the clamping block assembly is provided with a mounting hole for accommodating the flexible positioning sleeve, and the clamping block assembly is also provided with a fastening assembly for adjusting the inner diameter of the mounting hole, so as to achieve an interference fit between the mounting hole and the flexible positioning sleeve;
[0006] The flexible positioning sleeve comprises an upper positioning sleeve and a lower positioning sleeve connected by a first connecting piece, wherein the upper positioning sleeve and the lower positioning sleeve are respectively provided with an upper positioning hole and a lower positioning hole which are interconnected with each other; a vertical gap is left between the upper positioning sleeve and the lower positioning sleeve.
[0007] Preferably, the upper positioning hole and the lower positioning hole are both variable diameter holes.
[0008] Preferably, the first connecting member is a bolt, and the upper positioning sleeve and the lower positioning sleeve are respectively provided with corresponding connecting through holes, and the inner diameter of the connecting through holes matches the outer diameter of the bolt.
[0009] Preferably, the fastening assembly is a fastening ring connected with a fastening bolt; the clamping block assembly includes a plurality of clamping blocks, the outer wall of the clamping block is in contact with the inner wall of the fastening ring, the inner wall of the clamping block is in contact with the outer wall of the flexible positioning sleeve, and the plurality of clamping blocks are circumferentially distributed on the inner side of the fastening ring to form mounting holes, and a circumferential gap is left between adjacent clamping blocks.
[0010] Preferably, the clamp block assembly also includes a clamp body, a side hole is opened at the lower part of the outer wall of the clamp body, and the side hole is connected to the mounting hole; the clamp body is circumferentially divided to form two clamp blocks, and the lowest point of the circumferential dividing line of the clamp body is connected to the upper edge of the side hole 33 so that the bottoms of the two clamp blocks are connected as a whole.
[0011] Preferably, a fixed base is further provided at the bottom of the mounting hole, and a positioning groove which matches the bottom surface of the workpiece is preset on the upper end surface of the fixed base.
[0012] Preferably, the bottom of the clamp body is also connected to a mounting base for positioning the workstation.
[0013] The beneficial effects of the utility model are as follows: a buffer is provided for the workpiece through the flexible positioning sleeve, so that the workpiece is prevented from being crushed and broken due to direct contact with the high-hardness fixture; at the same time, the flexible positioning sleeve is arranged in upper and lower parts, so as to provide a buffer and shock-absorbing effect for the workpiece with a large aspect ratio, and the axial clamping stress is uniformly clamped, so as to effectively reduce the relative vibration between the rough blank and the tool; the positioning hole can be preset and matched according to the appearance surface of the workpiece, and the flexible positioning sleeve in the fastening fixture can be conveniently replaced, so as to simplify the installation process of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the workpiece of the utility model;
[0016] Figure 3 It is a cross-sectional schematic diagram of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the flexible positioning sleeve of the utility model;
[0018] Figure 5 It is a partial structural schematic diagram of the fastening clamp of the utility model. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] Cold working in the present invention is defined as a temperature below 100°C, in which a silicate material is subjected to mechanical processing including but not limited to milling, turning, grinding, polishing, etc. using a hard material tool (including but not limited to a combination of high-speed steel, tungsten steel and diamond tools), and the cutting process uses a cooling agent including but not limited to water, vegetable oil, mineral oil and gas.
[0021] Combined with the embodiments and Figure 1-5A quick clamp for cold processing of silicate materials, comprising a flexible positioning sleeve 2 and a fastening clamp that are sleeved together, the flexible positioning sleeve 2 is provided with a positioning hole for positioning a workpiece 1; the fastening clamp comprises a clamping block assembly and a fastening assembly, the clamping block assembly is provided with a mounting hole 30 for accommodating the flexible positioning sleeve 2, and the clamping block assembly is also provided with a fastening assembly for adjusting the inner diameter of the mounting hole to achieve an interference fit between the mounting hole 30 and the flexible positioning sleeve 2.
[0022] The flexible positioning sleeve is made of a flexible material with a Shore hardness not exceeding 70D. The flexible material includes but is not limited to one or more flexible engineering plastics such as polytetrafluoroethylene, phenolic resin, polycarbonate, polyamide, polyoxymethylene, polyphenylene ether, polyethylene terephthalate, polybutylene terephthalate, and polyphenylene sulfide.
[0023] Furthermore, the inner wall of the positioning hole is partially fitted with the outer surface of the workpiece 1, so that a strain space 10 for flexible deformation is left between the inner wall of the positioning hole and the outer surface of the workpiece 1, so that effective clamping can be achieved while quickly positioning the rough blank with external dimensional errors. The flexible positioning sleeve can be formed into a size that matches the outer surface of the workpiece by spraying, pressing or injection molding.
[0024] The flexible positioning sleeve 2 includes an upper positioning sleeve 21 and a lower positioning sleeve 22 connected by a first connecting member 23. The upper positioning sleeve 21 and the lower positioning sleeve 22 are respectively provided with an upper positioning hole 210 and a lower positioning hole that are interconnected, and the upper positioning hole 210 and the lower positioning hole are both variable diameter holes; a vertical gap 12 is left between the upper positioning sleeve 21 and the lower positioning sleeve 22 to provide a vertical shock absorbing effect and effectively reduce the relative vibration of the workpiece with a large aspect ratio and the tool. The first connecting member 23 is a bolt, and the upper positioning sleeve 21 and the lower positioning sleeve 22 are respectively provided with corresponding connecting through holes, and the inner diameter of the connecting through hole matches the outer diameter of the bolt.
[0025] Furthermore, the upper positioning sleeve and the lower positioning sleeve are both assembled and formed by a plurality of positioning members, which are connected by a second connecting member. The positioning members are arranged circumferentially around the appearance surface of the workpiece, and a circumferential gap is left between the positioning members to provide a circumferential shock-absorbing effect; the end of the positioning member far from the mounting hole is partially in contact with the appearance surface of the workpiece. The second connecting member is a connecting shaft, and adjacent positioning members are fixedly connected by the connecting shaft. On the basis of the vertical gap, the relative vibration between the workpiece and the tool is reduced by circumferential segmented buffering.
[0026] The fastening assembly is a fastening ring 31 connected with a fastening bolt; the clamping block assembly includes multiple clamping blocks 32, the outer wall of the clamping block 32 is in contact with the inner wall of the fastening ring 31, and the inner wall of the clamping block is against the outer wall of the flexible positioning sleeve 2. Multiple clamping blocks 32 are circumferentially distributed on the inner side of the fastening ring 31 to form a mounting hole 30, and a circumferential gap 13 is left between adjacent clamping blocks 32; the fastening ring 31 is pre-tightened by the fastening bolts, and the clamping force is transmitted to the workpiece 1 through the buffering of the clamping block 32 and the flexible positioning sleeve 2.
[0027] Furthermore, a plurality of clamping blocks are arranged with equal arcs along the outer circumference of the flexible positioning sleeve, which may be divided into 2, 3 or 4 equal parts; or a plurality of clamping blocks are arranged with unequal arcs along the outer circumference of the flexible positioning sleeve.
[0028] The clamp block assembly also includes a clamp body, a side hole 33 is opened at the lower part of the outer wall of the clamp body, and the clamp body is divided circumferentially to form two clamp blocks 32, and the lowest part of the circumferential dividing line of the clamp body is connected to the upper edge of the side hole 33 so that the bottoms of the two clamp blocks 32 are connected as a whole, and a V-shaped crack as a circumferential gap 13 is formed on the upper part of the clamp body through the circumferential dividing line; the number of clamp blocks 32 can be two or more, and the side hole 33 can be adjusted according to the number of clamp blocks 32. A fixed base is also provided at the bottom of the mounting hole 30, and a positioning groove 11 is preset on the upper end surface of the fixed base to match the bottom surface of the workpiece 1. The bottom of the clamp body is also connected to a mounting base 4 for positioning the station.
[0029] When in use, fix the clamping block assembly with the mounting base 4 at the work station, select an appropriate flexible positioning sleeve 2 according to the appearance of the workpiece 1, place the workpiece 1 in the positioning hole, and then put the flexible positioning sleeve 2 into the mounting hole 30, and reduce the inner diameter of the fastening ring 31 by tightening the bolts. The clamping block assembly indirectly clamps the workpiece 1 circumferentially through the flexible positioning sleeve 2 to complete the quick clamping operation.
[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A quick clamp for cold processing of silicate materials, comprising a sleeve-fitted flexible positioning sleeve (2) and a fastening clamp, Features: The flexible positioning sleeve (2) is provided with a positioning hole for positioning the workpiece (1); the fastening fixture comprises a clamping block assembly and a fastening assembly, the clamping block assembly is provided with a mounting hole (30) for accommodating the flexible positioning sleeve (2), and the clamping block assembly is also provided with a fastening assembly for adjusting the inner diameter of the mounting hole (30) to achieve an interference fit between the mounting hole (30) and the flexible positioning sleeve (2); The flexible positioning sleeve (2) comprises an upper positioning sleeve (21) and a lower positioning sleeve (22) connected via a first connecting member (23); the upper positioning sleeve (21) and the lower positioning sleeve (22) are respectively provided with an upper positioning hole (210) and a lower positioning hole that are interconnected; a vertical gap (12) is left between the upper positioning sleeve (21) and the lower positioning sleeve (22).
2. A quick clamp for cold working of silicate materials according to claim 1, Features: The upper positioning hole and the lower positioning hole are both variable diameter holes.
3. A quick clamp for cold working of silicate materials according to claim 1, Features: The first connecting member (23) is a bolt, and the upper positioning sleeve (21) and the lower positioning sleeve (22) are respectively provided with corresponding connecting through holes, and the inner diameter of the connecting through hole matches the outer diameter of the bolt.
4. A quick clamp for cold working of silicate materials according to claim 1, Features: The fastening assembly is a fastening ring (31) connected with a fastening bolt; the clamping block assembly includes a plurality of clamping blocks (32), the outer wall of the clamping block (32) is in contact with the inner wall of the fastening ring (31), and the inner wall of the clamping block is in contact with the outer wall of the flexible positioning sleeve (2); the plurality of clamping blocks (32) are circumferentially distributed on the inner side of the fastening ring (31) to form a mounting hole (30), and a circumferential gap (13) is left between adjacent clamping blocks (32).
5. A quick clamp for cold working of silicate materials according to claim 4, Features: The clamp block assembly also includes a clamp body, and a side hole (33) is opened at the lower part of the outer wall of the clamp body; the clamp body is circumferentially divided to form two clamp blocks (32), and the lowest point of the circumferential dividing line of the clamp body is connected to the upper edge of the side hole (33) so that the bottoms of the two clamp blocks (32) are connected as a whole.
6. A quick clamp for cold working of silicate materials according to claim 4, Features: A fixed base is also provided at the bottom of the mounting hole (30), and a positioning groove (11) that matches the bottom surface of the workpiece (1) is preset on the upper end surface of the fixed base.
7. A quick clamp for cold working of silicate materials according to claim 5, Features: The bottom of the clamp body is also connected to a mounting base (4) for positioning the workstation.