Numerical control chuck for cover plate

Abstract

The utility model provides a numerical control chuck for a cover plate, and belongs to the technical field of machinery. The problem that an existing numerical control chuck for the cover plate cannot remove chips is solved. The numerical control chuck for the cover plate comprises a body, the body is provided with a connecting section and a clamping section which are coaxially arranged, the outer diameter of the clamping section is larger than that of the connecting section, the outer wall of the clamping section is transited to the outer wall of the connecting section through a conical surface, a clamping opening is formed in the center of the clamping section, and the connecting section is provided with a plurality of opening grooves which are evenly distributed in the circumferential direction and axially extend to the end face of the clamping section. The clamping section is provided with a plurality of chip removal holes which are evenly distributed in the circumferential direction, and all the chip removal holes are communicated to the clamping opening in the radial direction. The chip removal device has the advantages of being smooth in chip removal, capable of improving yield and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a chuck, in particular to a numerical control chuck for a cover plate. Background Art

[0002] At present, the CNC chuck for the cover plate comprises a main body, the outer wall of the main body has a conical surface, the main body has a plurality of spring petals, and the inner wall of each spring petal forms a clamping opening for clamping the cover plate.

[0003] When in use, the body is driven by the pull rod to move axially, and the conical surface of the outer wall of the body is squeezed, so that the spring petals are retracted inward, the cover plate in the clamping mouth is clamped, and then the cover plate is processed. However, the debris generated during the processing will enter the body through the gaps between the spring petals, and the debris will also enter the body through the gaps in the clamping mouth. In this way, the debris cannot be discharged, and the debris is easy to block the inside of the body, making it inconvenient to clean. Moreover, the debris that cannot be discharged will scratch the surface of the cover plate, reducing the yield rate. Summary of the invention

[0004] The utility model aims to solve the above problems existing in the prior art and provides a numerical control chuck for a cover plate which is convenient for chip removal.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a CNC chuck for a cover plate, comprising a main body, the main body having a connecting section and a clamping section coaxially arranged, the outer diameter of the clamping section is larger than the outer diameter of the connecting section, the outer wall of the clamping section transitions to the outer wall of the connecting section through a conical surface, a clamping opening is provided at the center of the clamping section, the connecting section has a plurality of opening grooves uniformly distributed circumferentially and extending axially to the end face of the clamping section, each opening groove radially penetrates to the clamping opening, and is characterized in that the clamping section is provided with a plurality of chip removal holes uniformly distributed circumferentially, each chip removal hole radially penetrates to the clamping opening.

[0006] In the above-mentioned CNC chuck for a cover plate, the outer wall of the connecting section has two symmetrically arranged and radially recessed positioning grooves, and both positioning grooves are connected to the end surface of the connecting section.

[0007] In the above-mentioned CNC chuck for a cover plate, the number of the chip removal holes is consistent with the number of the positioning grooves, and each positioning groove is provided with a corresponding chip removal hole.

[0008] In the above-mentioned CNC chuck for a cover plate, the two opening grooves respectively penetrate the corresponding chip removal holes and positioning grooves, and the hole walls of each group of positioning grooves and chip removal holes are symmetrically arranged with respect to the corresponding opening grooves.

[0009] In the above-mentioned CNC chuck for a cover plate, the outer wall of the connecting section has a clearance groove connected to the conical surface.

[0010] In the above-mentioned CNC chuck for a cover plate, the connecting section has an internal thread.

[0011] In the above-mentioned CNC chuck for cover plate, each corner of the clamping opening has a radially recessed groove extending axially to the connecting section.

[0012] Compared with the prior art, the CNC chuck of the cover plate discharges the processing debris out of the body through the chip removal hole, avoiding the accumulation of debris inside the body and also avoiding the accumulated debris from scratching the surface of the cover plate. The yield is high, the clamping effect is good, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the CNC chuck used for the cover.

[0014] Figure 2 It is a structural side view of the CNC chuck for this cover.

[0015] Figure 3 yes Figure 2 Structural cross-sectional view of section AA.

[0016] Figure 4 yes Figure 2 Structural cross-sectional view of section BB.

[0017] In the figure, 1, main body; 2, connecting section; 3, clamping section; 4, conical surface; 5, clamping mouth; 6, opening groove; 7, chip removal hole; 8, positioning groove; 9, air avoidance groove; 10, internal thread; 11, clearance groove. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the CNC chuck for the cover plate includes a main body 1, which has a coaxially arranged connecting section 2 and a clamping section 3. The outer diameter of the clamping section 3 is larger than the outer diameter of the connecting section 2. The outer wall of the clamping section 3 transitions to the outer wall of the connecting section 2 through a conical surface 4. A clamping opening 5 is provided at the center of the clamping section 3. The connecting section 2 has four open grooves 6 that are evenly distributed circumferentially and extend axially to the end face of the clamping section 3. Each of the open grooves 6 radially penetrates to the clamping opening 5. The clamping section 3 is provided with a plurality of chip removal holes 7 that are evenly distributed circumferentially. Each of the chip removal holes 7 radially penetrates to the clamping opening 5.

[0020] The chip removal hole 7 in the CNC chuck for the cover plate is a rectangular hole. In actual manufacturing, the chip removal hole 7 can be a circular hole, an oblique hole or a square hole. When in use, the connecting section 2 is used to connect the pull rod, and the pull rod drives the main body 1 to axially displace, and the conical surface 4 is squeezed, so that the clamping section 3 is retracted inward, and the clamping opening 5 clamps the cover plate. The debris generated during the processing will enter the inside of the main body 1 from the opening groove 6 and / or the gap of the clamping opening 5. At this time, the chip removal hole 7 plays a chip removal role, and the debris is discharged from the chip removal hole 7 to the outside of the main body 1, avoiding the accumulation of debris inside the main body 1, and also avoiding the accumulated debris from scratching the surface of the cover plate, and the yield rate is high.

[0021] In further detail, the outer wall of the connecting section 2 has two symmetrically arranged and radially concave positioning grooves 8, both of which are connected to the end face of the connecting section 2. The two positioning grooves 8 facilitate clamping with calipers and facilitate loading and unloading of the body 1. The number of chip removal holes 7 is consistent with the number of positioning grooves 8, and each positioning groove 8 is provided with a corresponding chip removal hole 7. This structure layout is reasonable, which can ensure the structural rigidity of the clamping section 3, and the positioning groove 8 plays the role of expanding the mouth, reducing the interference of the outer wall of the clamping section 3, and the chip removal process is smooth.

[0022] Two of the opening grooves 6 penetrate the corresponding chip removal holes 7 and positioning grooves 8 respectively. The hole walls of each group of positioning grooves 8 and chip removal holes 7 are symmetrically arranged to the corresponding opening grooves 6, so that the debris entering from the opening grooves 6 can be easily discharged from the chip removal holes 7, and the chip removal is smoother.

[0023] The outer wall of the connecting section 2 has a clearance groove 9 connected to the conical surface 4, which reduces interference and makes the working process of the conical surface 4 smooth. The connecting section 2 has an internal thread 10, which is threadedly connected to the pull rod, and the connecting section 2 is easy to connect. Each corner of the clamping port 5 has a radially concave and axially extended to the connecting section 2. The clearance groove 11 reduces interference, the effective contact area of ​​the clamping port 5 is large, and the clamping effect is increased.

[0024] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A CNC chuck for a cover plate, comprising a body (1), the body (1) having a coaxially arranged connecting section (2) and a clamping section (3), the outer diameter of the clamping section (3) being larger than the outer diameter of the connecting section (2), the outer wall of the clamping section (3) transitioning to the outer wall of the connecting section (2) through a conical surface (4), a clamping opening (5) being provided at the center of the clamping section (3), the connecting section (2) having a plurality of opening grooves (6) uniformly distributed in the circumferential direction and extending axially to the end surface of the clamping section (3), each opening groove (6) radially penetrating to the clamping opening (5), characterized in that: The clamping section (3) is provided with a plurality of chip removal holes (7) evenly distributed in the circumferential direction, and each chip removal hole (7) radially penetrates to the clamping opening (5).

2. A CNC chuck for a cover plate according to claim 1, characterized in that: The outer wall of the connecting section (2) has two symmetrically arranged and radially recessed positioning grooves (8), and both positioning grooves (8) are connected to the end surface of the connecting section (2).

3. A CNC chuck for a cover plate according to claim 2, characterized in that: The number of the chip removal holes (7) is consistent with the number of the positioning grooves (8), and each positioning groove (8) is provided with a corresponding chip removal hole (7).

4. A CNC chuck for a cover plate according to claim 3, characterized in that: The two opening grooves (6) respectively penetrate the corresponding chip removal holes (7) and the positioning grooves (8), and the hole walls of each group of positioning grooves (8) and chip removal holes (7) are arranged symmetrically with respect to the corresponding opening grooves (6).

5. A CNC chuck for a cover plate according to claim 1, 2, 3 or 4, characterized in that: The outer wall of the connecting section (2) has a clearance groove (9) connected to the conical surface (4).

6. A CNC chuck for a cover plate according to claim 1, 2, 3 or 4, characterized in that: The connecting section (2) has an internal thread (10).

7. A CNC chuck for a cover plate according to claim 1, 2, 3 or 4, characterized in that: Each corner of the clamping opening (5) has a radially recessed clearance groove (11) that extends axially to the connecting section (2).

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