Novel main shaft holding and clamping assembly

Abstract

The utility model discloses a novel main shaft holding and clamping assembly which comprises a connecting frame, an upper connecting plate, a lower connecting plate and a locking piece. The upper connecting plate and the lower connecting plate are connected with the upper end face and the lower end face of the connecting frame respectively and are symmetrically arranged. The upper connecting plate and the lower connecting plate are both connected with a plurality of elastic clamping parts, and a clamping hole allowing a main shaft to penetrate is defined between each elastic clamping part and a plate body of the upper connecting plate and between each elastic clamping part and a plate body of the lower connecting plate. A connecting part is arranged at one end, far away from the plate bodies connected with the upper connecting plate and the lower connecting plate, of each elastic clamping part; elastic gaps communicated with the clamping holes are formed between the connecting parts and the plate bodies of the upper connecting plate and the lower connecting plate; and the connecting part is connected with the plate bodies of the upper connecting plate and the lower connecting plate through locking pieces, and the space sizes of the clamping holes and the elastic gaps are adjusted. And the elastic clamping parts and the clamping holes are uniformly distributed along the same datum line in the plate body length directions of the upper connecting plate and the lower connecting plate.

Description

Technical Field

[0001] The present application relates to the technical field of CNC processing devices, and in particular to a novel spindle clamping assembly. Background Art

[0002] In the prior art, there is an integrated multi-spindle clamp disclosed in a patent document with patent application number CN216371096U, in which multiple clamping units are arranged on the same reference line. Multiple spindles are assembled through multiple clamping units, effectively ensuring the consistency of the multiple spindles after assembly. The spacing between each clamping unit is fixed, eliminating the need for spindle spacing correction, thereby improving production efficiency and effectively improving product processing accuracy.

[0003] However, it only includes two parts: the clamping body 100 and the screw (locking piece 230 and rotating top opening piece 240). The

[0025] paragraph of the specification discloses that the elastic clamping block 220 and the clamping body 100 are formed in an integral structure. If this multi-spindle clamping product is made of light metal material, such as aluminum alloy material, die-casting, and then machined and trimmed later, although the cost is low and easy to process and manufacture, the overall rigidity is insufficient. After a period of use, the aluminum alloy is prone to deformation, resulting in a large error in the required position accuracy between multiple spindles. Another method is to use good steel materials with excellent performance indicators. The raw material is a long column, and the positioning groove 210 and the assembly channel are directly machined on this basis. However, this method is costly, the material is hard and thick, and the processing is difficult. From the perspective of machining, it is more difficult to ensure the processing dimensional accuracy of smaller and larger workpieces. This integrally formed structure clamping body belongs to the category of large-sized workpieces. Utility Model Content

[0004] The utility model mainly aims at the above problems and proposes a novel spindle clamping assembly, aiming to solve the technical problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a new spindle clamping assembly, including a connecting frame, an upper connecting plate, a lower connecting plate, and a locking piece; the upper connecting plate and the lower connecting plate are respectively connected to the upper and lower end surfaces of the connecting frame, and the two are symmetrically arranged; the upper connecting plate and the lower connecting plate are both connected with a plurality of elastic clamping parts, and a clamping hole for the spindle to pass through is enclosed between each of the elastic clamping parts and the plate body of the upper connecting plate and the lower connecting plate; each of the elastic clamping parts is provided with a connecting part at one end away from the connection with the plate body of the upper connecting plate and the lower connecting plate; a elastic gap connected to the clamping hole is provided between the connecting part and the plate body of the upper connecting plate and the lower connecting plate; the connecting part is connected to the plate body of the upper connecting plate and the lower connecting plate by the locking piece to adjust the space size of the clamping hole and the elastic gap.

[0006] Furthermore, the elastic clamping parts and the clamping holes are evenly distributed along the same reference line in the length direction of the upper connecting plate and the lower connecting plate.

[0007] Furthermore, the elastic clamping portion is an integral structure with the plate bodies of the upper connecting plate and the lower connecting plate.

[0008] Furthermore, the upper connecting plate and the lower connecting plate are both provided with connecting holes, the connecting frame is provided with screw holes, and the upper connecting plate and the lower connecting plate are connected to the connecting frame by screws passing through the connecting holes and the screw holes.

[0009] Furthermore, the locking member is a screw.

[0010] Furthermore, the upper connecting plate and the lower connecting plate are made of any one of tool steel and die steel, and the connecting frame is made of light metal.

[0011] Furthermore, the connecting frame is a rod or a column, and has a rectangular cross section.

[0012] Furthermore, with the center lines of the upper connecting plate and the lower connecting plate as reference, the connecting portion of each of the elastic clamping portions is arranged adjacent to the center line.

[0013] Furthermore, the upper connecting plate and the lower connecting plate are both provided with weight-reducing holes.

[0014] Furthermore, deformation accommodating grooves are provided at the connection points between the elastic clamping portion and the upper connecting plate and the lower connecting plate.

[0015] Compared with the prior art, the new spindle clamping assembly provided by the utility model can be made of steel material as a whole compared to the integrated clamping product body, and still has cost advantages. Secondly, the upper connecting plate and the lower connecting plate are smaller in size than the integrated clamping product body as a whole, and can better ensure the processing accuracy, so that when clamping multiple spindles, the spindles can obtain a high-precision dimensional position relationship between the spindles, thereby achieving high-precision processing. If one of the connecting frame, the upper connecting plate, and the lower connecting plate is damaged, then only one of the components can be replaced for maintenance without having to replace the entire part, which is more cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a new type of spindle clamping assembly in the present application when clamping a spindle.

[0017] Figure 2 for Figure 1 Top view of the .

[0018] Figure 3This is a schematic diagram of the three-dimensional structure of a novel spindle clamping assembly of the present application when the clamping holes all clamp the spindle.

[0019] Figure 4 for Figure 1 Schematic diagram of the structural decomposition.

[0020] The reference numerals shown in the figure are: 1, connecting frame; 110, screw hole; 2, upper connecting plate; 250, connecting hole; 260, weight reduction hole; 3, lower connecting plate; 4, elastic clamping part; 410, connecting part; 420, elastic gap; 430, deformation accommodating groove; 5, clamping hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. It is understandable that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0022] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field of the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The terms used in this document in the specification of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0023] It should also be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] Please refer to Figure 1 - Figure 4 The present embodiment provides a novel spindle clamping assembly, comprising a connecting frame 1, an upper connecting plate 2, a lower connecting plate 3, and a locking member (not shown); the upper connecting plate 2 and the lower connecting plate 3 are respectively connected to the upper and lower end surfaces of the connecting frame 1, and the two are symmetrically arranged; the upper connecting plate 2 and the lower connecting plate 3 are both connected with a plurality of elastic clamping parts 4, and each of the elastic clamping parts 4 and the plate bodies of the upper connecting plate 2 and the lower connecting plate 3 respectively enclose a clamping hole 5 for accommodating the spindle to pass through; each of the elastic clamping parts 4 is provided with a connecting part 410 at one end away from the plate body connected to the upper connecting plate 2 and the lower connecting plate 3; a loose gap 420 connected to the clamping hole 5 is provided between the connecting part 410 and the plate bodies of the upper connecting plate 2 and the lower connecting plate 3; the connecting part 410 is connected to the plate bodies of the upper connecting plate 2 and the lower connecting plate 3 by the locking member, and the space size of the clamping hole 5 and the loose gap 420 is adjusted.

[0025] By designing the original integrated clamping product body into a split three-layer structure of a connecting frame 1, an upper connecting plate 2, and a lower connecting plate 3, firstly, the upper connecting plate 2 and the lower connecting plate 3 can be made of steel materials with good rigidity after heat treatment. Although the cost is higher, it is still cost-effective compared to the integrated clamping product body that uses steel materials as a whole. The connecting frame 1 plays a basic role in controlling the spacing and connection between the upper connecting plate 2 and the lower connecting plate 3. The purpose is to prevent the thickness of the upper connecting plate 2 and the lower connecting plate 3 from being too thick, and to use materials with lower costs than the upper connecting plate 2 and the lower connecting plate 3. Secondly, the upper connecting plate 2 and the lower connecting plate 3 are smaller in size than the integrated clamping product body as a whole, and can better guarantee the processing accuracy, so that when clamping multiple spindles, a high-precision dimensional position relationship can be obtained between the spindles, thereby achieving high-precision processing.

[0026] Thanks to the improved processing accuracy of the upper connecting plate 2, the lower connecting plate 3, and the connecting part 410, the spacing between the multiple clamping holes 5 is accurate. Compared with the prior art, the spindle clamped by the present spindle clamping assembly can now achieve 2~5um precision wire cutting, which was originally only capable of 20um accuracy range of wire cutting.

[0027] If one of the connecting frame 1, the upper connecting plate 2, and the lower connecting plate 3 is damaged, only one of the components may be replaced for maintenance, rather than replacing the entire components, which is more cost-effective.

[0028] When using the new spindle clamping assembly, first release or loosen the locking piece and the connection part 410 and the plate body of the upper connecting plate 2 and the lower connecting plate 3, so that the tension clamping part 4 and the connecting part 410 are not subjected to external force, and the clamping hole 5 and the tension gap 420 are expanded to the maximum in a natural state, which is convenient for the spindle to penetrate the clamping hole 5, and then adjust the locking piece to tighten the connection part 410 and the plate body of the upper connecting plate 2 and the lower connecting plate 3. During this process, the tension clamping part 4 and the connecting part 410 are both close to the plate body of the upper connecting plate 2 and the lower connecting plate 3, the space of the clamping hole 5 and the tension gap 420 is reduced, and the tension clamping part 4 and the plate body of the upper connecting plate 2 and the lower connecting plate 3 clamp and fix the spindle.

[0029] Preferably, the elastic clamping parts 4 and the clamping holes 5 are evenly distributed along the same reference line in the length direction of the upper connecting plate 2 and the lower connecting plate 3 .

[0030] The clamping holes 5 are distributed along the same reference line, which effectively ensures the consistency of the multi-spindle assembly, thereby making the product processing precision high.

[0031] Please refer to Figure 1 and Figure 2 The elastic clamping portion 4 is an integral structure with the upper connecting plate 2 and the lower connecting plate 3.

[0032] The raw material of the upper connecting plate 2 and the lower connecting plate 3 is a whole plate material, and the clamping hole 5 and the loose gap 420 can be processed by wire cutting, and the loose clamping part 4 can be processed at the same time. Avoid the loose clamping part 4 and the plate body of the upper connecting plate 2 and the lower connecting plate 3 being separated and easy to lose.

[0033] Please refer to Figure 4 The upper connecting plate 2 and the lower connecting plate 3 are both provided with connecting holes 250, and the connecting frame 1 is provided with screw holes 110. The upper connecting plate 2 and the lower connecting plate 3 are connected to the connecting frame 1 by screws (not shown) penetrating the connecting holes 250 and the screw holes 110.

[0034] This structure is convenient for repeated disassembly and assembly.

[0035] In some embodiments, the locking member is a screw.

[0036] Preferably, the upper connecting plate 2 and the lower connecting plate 3 are made of tool steel or die steel, and the connecting frame 1 is made of light metal.

[0037] The light metal may be an aluminum alloy. Tool steel and die steel have high-quality rigidity, are wear-resistant, are not easily deformed or fatigue-damaged, and can be used repeatedly to ensure their dimensional stability.

[0038] Preferably, the connecting frame 1 is a rod or a column, and has a rectangular cross section.

[0039] Please refer to Figure 4 , taking the center lines of the upper connecting plate 2 and the lower connecting plate 3 as reference, the connecting portion 410 of each of the elastic clamping portions 4 is disposed adjacent to the center lines.

[0040] This structure, that is, the opening that connects the tightness gap 420 to the outside world, is oriented toward the center line. This structure can optimize and shorten the wiring path when processing the tightness gap 420, the clamping hole 5, and the connecting part 410 using a wire cutting machine to achieve efficient processing.

[0041] Please refer to Figure 2 and Figure 4 The upper connecting plate 2 and the lower connecting plate 3 are both provided with weight-reducing holes 260 .

[0042] The weight reduction holes 260 can reduce the weight of the upper connecting plate 2 and the lower connecting plate 3.

[0043] Please refer to Figure 2 A deformation accommodating groove 430 is provided at the connection between the elastic clamping portion 4 and the upper connecting plate 2 and the lower connecting plate 3.

[0044] The deformation accommodating groove 430 can make the elastic clamping part 4 deform and fold slightly to have an accommodating space when the elastic clamping part 4 is locked by the locking member, thereby avoiding fatigue fracture and stress concentration fracture.

[0045] In the specification and claims of the present application, the words "include / comprise" and the words "have / include" and their variations are used to specify the existence of stated features, values, steps or components, but do not exclude the existence or addition of one or more other features, values, steps, components or combinations thereof.

[0046] Some features of the present invention are described in different embodiments for clarity of description, however, these features may also be described in combination in a single embodiment. Conversely, some features of the present invention are described in a single embodiment for brevity, however, these features may also be described in different embodiments alone or in any suitable combination.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new spindle clamping assembly, characterized in that: It includes a connecting frame, an upper connecting plate, a lower connecting plate, and a locking piece; the upper connecting plate and the lower connecting plate are respectively connected to the upper and lower end surfaces of the connecting frame, and the two are symmetrically arranged; the upper connecting plate and the lower connecting plate are both connected with a plurality of elastic clamping parts, and a clamping hole for accommodating the main shaft to pass through is enclosed between each of the elastic clamping parts and the plate body of the upper connecting plate and the lower connecting plate; each of the elastic clamping parts is provided with a connecting part at one end away from the connection with the plate body of the upper connecting plate and the lower connecting plate; a elastic gap connected to the clamping hole is provided between the connecting part and the plate body of the upper connecting plate and the lower connecting plate; the connecting part is connected to the plate body of the upper connecting plate and the lower connecting plate by the locking piece to adjust the space size of the clamping hole and the elastic gap.

2. A novel spindle clamping assembly according to claim 1, characterized in that: The elastic clamping parts and the clamping holes are evenly distributed along the same reference line in the length direction of the upper connecting plate and the lower connecting plate.

3. A novel spindle clamping assembly according to claim 1, characterized in that: The elastic clamping portion is an integral structure with the plate bodies of the upper connecting plate and the lower connecting plate.

4. A novel spindle clamping assembly according to claim 1, characterized in that: The upper connecting plate and the lower connecting plate are both provided with connecting holes, the connecting frame is provided with screw holes, and the upper connecting plate and the lower connecting plate are connected to the connecting frame by screws passing through the connecting holes and the screw holes.

5. The novel spindle clamping assembly according to claim 1 is characterized in that: The locking piece is a screw.

6. The novel spindle clamping assembly according to claim 1 is characterized in that: The upper connecting plate and the lower connecting plate are made of any one of tool steel and die steel, and the connecting frame is made of light metal.

7. The novel spindle clamping assembly according to claim 1 is characterized in that: The connecting frame is a rod or a column, and has a rectangular cross section.

8. The novel spindle clamping assembly according to claim 1 is characterized in that: With reference to the center lines of the upper connecting plate and the lower connecting plate, the connecting portion of each of the elastic clamping portions is disposed adjacent to the center line.

9. The novel spindle clamping assembly according to claim 1 is characterized in that: The upper connecting plate and the lower connecting plate are both provided with weight-reducing holes.

10. The novel spindle clamping assembly according to claim 1 is characterized in that: A deformation accommodating groove is provided at the connection between the elastic clamping portion and the plate bodies of the upper connecting plate and the lower connecting plate.

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