CN116021049A - Grooving tool capable of being driven and clamped in two directions - Google Patents

Abstract

The invention discloses a grooving cutter which can be driven and clamped bidirectionally, which comprises a cutter body and a grooving blade. A blade receiving groove is opened on the cutter body, and the grooving blade is installed in the blade receiving groove. The grooving cutter also includes an upper fastener, a lower retaining member and a side driving member, and an elastic deformation groove is provided on the cutter body to divide the cutter body into an upper clamping part and an upper clamping part corresponding to the blade receiving groove. The lower support part, the upper fastener is installed on the upper clamping part and is threadedly connected with the lower clamping part installed on the lower support part, and the side part of the lower clamping part is provided with a clamp A tapered hole, the side driving part is installed on the side of the cutter body and the end is provided with a driving tapered surface matched with the tapered hole, the central axis of the tapered surface and the tapered hole The central axis is parallel and there is a downward eccentricity E, which should satisfy: 0.2mm≤E≤0.5mm. The invention has the advantages of stable and reliable structure, high clamping force and easy replacement of grooving blades.

Description

A grooving tool that can be driven and clamped in both directions

technical field

The invention mainly relates to the field of metal cutting and processing, in particular to a grooving tool capable of bidirectional driving and clamping.

Background technique

Grooving tool is one of the most commonly used CNC tools in CNC machining. In the tool holder structure of CNC machine tools such as horizontal lathe and vertical lathe, the tool positions are relatively sparse, and the space between the tools is relatively large. It is loaded and unloaded from the top surface of the tool through fasteners The blade is very convenient. With the increasing demand for high-quality product processing in various industries, the centering machine has gradually replaced the conventional CNC lathe due to its high processing precision, high production efficiency, and high degree of automation. The centering machine is compactly assembled with multiple For square shank knives, the top surface of the knives is facing the bottom surface of the adjacent knives. In order to arrange more knives, the distance between two adjacent knives is very small. The CNC grooving tool in the existing technology center is clamped by the fastener on the top surface of the tool and the blade is replaced from the top surface, which does not have enough wrench space for the compact tool arrangement structure of the centering machine to replace the blade.

In order to solve the above problems, it is an effective method to use a grooving tool that can be clamped from the side. This kind of structure not only needs to ensure that the grooving blade can be clamped reliably, but also can realize the replacement of the blade from the side, and the structure is usually complicated. , Clamping reliability is not high.

For example, Chinese patent document CN103987479B discloses a clamper with side locking, through which the locking part on the side acts on the tapered hole in the clamping part to realize that the blade is clamped in the groove receiving groove; but in this technical solution The grooving tool can only be locked and replaced from the side, which makes it inconvenient to operate in some cutting applications; the clamping of the blade is to transmit the force to the clamping part on the top surface through the locking part on the side, which is more convenient than the traditional top As far as the surface screw locking structure is concerned, the reliability of clamping is worse under the condition of larger cutting parameters.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a grooving tool with stable and reliable structure, high clamping force, easy replacement of grooving blades and wide application range, which can be bidirectionally driven and clamped.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A grooving tool that can be driven and clamped in both directions, including a cutter body and a grooving blade, a blade receiving groove is opened on the cutter body, the grooving blade is installed in the blade receiving groove, and the grooving tool It also includes an upper fastener, a lower retaining member and a side driving member, and an elastic deformation groove is provided on the cutter body to divide the cutter body corresponding to the blade receiving groove into an upper clamping part and a lower supporting part, The upper fastener is installed on the upper clamping part and is threadedly connected with the lower clamping part installed on the lower support part, and the side of the lower clamping part is provided with a clamping taper hole, The side driving part is installed on the side of the cutter body and the end is provided with a driving cone surface matched with the clamping cone hole, and the central axis of the driving cone surface is parallel to the central axis of the clamping cone hole And there is a downward eccentricity E, which should satisfy: 0.2mm≤E≤0.5mm.

As a further improvement of the above technical solution:

The cutter body is provided with a locking accommodating hole that runs through the upper clamping part and the lower supporting part, and the locking accommodating hole includes an upper accommodating section, a limiting section and a lower accommodating section arranged in sequence, and the limiting section The internal diameter of the section is smaller than the inner wall diameter of the upper and lower accommodating sections, the upper fastener includes a limiting head and a threaded part, the lower clamping member is provided with an internal thread hole, and the limiting head Placed in the upper accommodating section, the threaded portion passes through the limiting section and is connected with the inner threaded hole of the lower clamping member placed in the lower accommodating section.

There is a gap L between the outer peripheral surface of the limiting head and the inner wall of the upper containing section, between the threaded portion and the inner wall of the limiting section, and between the outer peripheral surface of the lower clamping member and the lower containing section, which should satisfy: L≥0.2mm.

The upper fastening member and the lower retaining member are coaxial and the axes are perpendicular to the central axis of the side driving member.

The side part of the lower clamping member is provided with two clamping taper holes, and the number of the side driving components is correspondingly arranged in two and located on both sides of the cutter body respectively.

The cone angle of the driving cone surface is α, and the cone angle of the clamping cone hole is β, which should satisfy: α=β, 20°≤α≤60°, 20°≤β≤60°.

The side driving member is threadedly connected with the cutter body through the external thread provided on the outer peripheral surface.

The distance between the limit surface of the upper accommodation section and the elastic deformation groove is L1, and the distance between the limit surface of the lower accommodation section and the elastic deformation groove is L2, which should satisfy: L1≥2mm , L2≥2mm.

An inner wrench hole is provided on the outer end surface of the side driving member.

Compared with the prior art, the present invention has the advantages of:

In the grooving cutter capable of bidirectional driving and clamping of the present invention, an elastic deformation groove is provided on the cutter body to divide the corresponding blade receiving groove of the cutter body into an upper clamping part and a lower supporting part, and the upper fastener is installed on the upper clamping part. The tightening part is threadedly connected with the lower clamping part installed on the lower supporting part. The side part of the lower clamping part is provided with a clamping taper hole. The drive cone surface matched with the taper hole, the central axis of the drive cone surface is parallel to the central axis of the clamping cone hole and there is a downward eccentricity E, which should meet the following requirements: 0.2mm≤E≤0.5mm. When installing, first place the lower clamping The part is installed on the cutter body, and the rotation and drop of the lower part is restricted by installing the side drive part, and the upper fastener is screwed with the lower part to complete the upper fastener, the lower part and the side part. For the installation of the driver, after placing the grooving blade in the blade receiving groove, continue to rotate the upper fastener until the grooving blade is clamped, that is, the grooving blade is clamped from the top surface, and the upper fastener can be loosened. Replacement of the blade, or after placing the grooving blade in the blade receiving groove, continue to rotate the side drive member, since the central axis of the driving cone surface is parallel to the central axis of the locking cone hole and there is a downward eccentricity E, it will pull down the upper Fastener until the grooving blade is clamped, that is, the grooving blade is clamped from the side, and the blade can be replaced by loosening the side driver. The structure is stable and reliable, and the clamping force is large enough. More importantly, The blade can be clamped and replaced from the top surface or the side, which can meet the application requirements of row tool holders such as centering machines, and expand the application range of grooving tools.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of a grooving tool capable of bidirectional driving and clamping according to the present invention.

Fig. 2 is a three-dimensional cross-sectional view of the grooving tool capable of bidirectional driving and clamping according to the present invention.

Fig. 3 is a top view of the grooving tool capable of bidirectional driving and clamping according to the present invention.

Fig. 4 is a cross-sectional view along line A-A of Fig. 3 .

Fig. 5 is a sectional view along A-A of Fig. 3 (only showing the cutter body).

Fig. 6 is a front view of the upper fastener of the grooving tool capable of bidirectional driving and clamping according to the present invention.

Fig. 7 is a front view of the lower clamping part of the grooving tool which can be bidirectionally driven and clamped according to the present invention.

Fig. 8 is a front view of the side driving part of the grooving cutter capable of bidirectional driving and clamping according to the present invention.

Each label in the figure means:

1. Cutter body; 11. Upper clamping part; 12. Lower support part; 13. Locking accommodation hole; 131. Upper accommodation section; 132. Limiting section; 133. Lower accommodation section; 2. Grooving blade; 3 , blade receiving groove; 4, upper fastener; 41, limit head; 42, threaded part; 5, lower clamping part; 51, clamping taper hole; 61, driving cone surface; 62, inner wrench hole; 7, elastic deformation groove.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Figures 1 to 8 show an embodiment of the grooving tool that can be driven and clamped bidirectionally according to the present invention. The grooving tool that can be driven and clamped in both directions includes a cutter body 1 and a grooving blade 2. There is a blade receiving groove 3, and the grooving blade 2 is installed in the blade receiving groove 3. The grooving tool also includes an upper fastener 4, a lower clamping member 5 and a side driving member 6, and an elastic deformation groove is provided on the cutter body 1 7 To divide the cutter body 1 corresponding to the blade receiving groove 3 into an upper clamping part 11 and a lower support part 12, and the upper fastener 4 is installed on the upper clamping part 11 and connected with the lower support part 12. The clamping part 5 is threaded, the side of the lower clamping part 5 is provided with a clamping taper hole 51, the side drive part 6 is installed on the side of the cutter body 1 and the end is provided with a driving cone surface matched with the clamping taper hole 51 61. The central axis of the driving cone surface 61 is parallel to the central axis of the clamping cone hole 51 and is provided with a downward eccentricity E, which should satisfy: 0.2mm≤E≤0.5mm. When installing, first install the lower clamping part 5 to the knife body 1, and through the installation of the side driver 6 and the lower clamping component 5 to limit the rotation or drop of the lower clamping component 5, the upper fastener 4 is rotated and the lower clamping component 5 is screwed, and the upper fastening is completed. 4, the installation of the lower clamping part 5 and the side driving part 6, after the grooving blade 2 is placed in the blade receiving groove 3, continue to rotate the upper fastener 4 until the grooving blade 2 is clamped, that is, it is realized from the top Clamp the grooving blade 2 on the surface, loosen the upper fastener 4 to replace the grooving blade 2, or place the grooving blade 2 in the blade receiving groove 3, and continue to rotate the side driving member 6, because the driving cone surface 61 The central axis is parallel to the central axis of the clamping taper hole 51 and is provided with a downward eccentricity E, which will pull the upper fastener 4 downward until the grooving blade 2 is clamped, that is, the grooving blade 2 is clamped from the side, The grooving blade 2 can be replaced by loosening the side driving part 6. The structure is stable and reliable, and the clamping force is large enough. More importantly, the grooving blade 2 can be clamped and replaced from the top surface or the side, which can meet the requirements of walking. The application requirements of machine tools and other rows of tool holders have expanded the scope of application of grooving tools.

In this embodiment, the cutter body 1 is provided with a locking accommodating hole 13 that runs through the upper clamping portion 11 and the lower supporting portion 12. The locking accommodating hole 13 includes an upper accommodating section 131, a limiting section 132 and a lower accommodating section arranged in sequence. Section 133, the inner diameter of the limiting section 132 is smaller than the inner wall diameter of the upper accommodation section 131 and the lower accommodation section 133, the upper fastener 4 includes a limiting head 41 and a threaded part 42, and the lower clamping member 5 is provided with an internal threaded hole 52 , the limiting head 41 is placed in the upper accommodation section 131, and the threaded part 42 passes through the limiting section 132 and is connected with the inner threaded hole 52 of the lower clamping member 5 placed in the lower accommodation section 133, the structure is compact, stable and reliable.

In this embodiment, there is a gap L between the outer peripheral surface of the limiting head 41 and the inner wall of the upper containing section 131, between the threaded part 42 and the inner wall of the limiting section 132, and between the outer peripheral surface of the lower locking member 5 and the lower containing section 133. , should meet: L≥0.2mm, so that the upper fastener 4 and the lower clamping member 5 can move flexibly in the locking accommodation hole 13, so as to ensure the smooth progress of clamping and loosening of the blade. In this embodiment, the limit The gap L between the outer peripheral surface of the head 41 and the inner wall of the upper receiving section 131, the outer peripheral surface of the lower clamping member 5 and the lower receiving section 133 is 0.25 mm, and the gap L between the threaded part 42 and the inner wall of the limiting section 132 is 0.5mm. In this embodiment, the upper fastening member 4 and the lower retaining member 5 are coaxial and the axes are perpendicular to the central axis of the side driving member 6 .

In this embodiment, the side of the lower retaining member 5 is provided with two retaining taper holes 51, and the side drive members 6 are correspondingly arranged in two and are respectively located on both sides of the cutter body 1, so that the pressing of the grooving blade 2 is more compact. reliable.

In this embodiment, the cone angle of the driving cone surface 61 is α, and the cone angle of the clamping cone hole 51 is β, which should satisfy: α=β, 20°≤α≤60°, 20°≤β≤60°, this In an embodiment, α=β=30°.

In this embodiment, the side driving member 6 is threadedly connected with the cutter body 1 through the external thread provided on the outer peripheral surface.

In this embodiment, the distance between the limiting surface of the upper accommodation section 131 and the elastic deformation groove 7 is L1, and the distance between the limiting surface of the lower accommodation section 133 and the elastic deformation groove 7 is L2, which should satisfy: L1≥ 2mm, L2≥2mm, so that the limit section 132 of the cutter body has sufficient strength and rigidity, and when the grooving blade 2 is clamped, it is prevented from being deformed by the force of the upper fastener 4 and the lower clamping member 5. This implementation In the example, L1=2.8mm, L2=3.2mm.

In this embodiment, an inner wrench hole 62 is provided on the outer end surface of the side driving member 6 to facilitate installation and loosening operations.

The up and down, inside and outside, etc. expressed in the present invention are based on the state when the grooving tool is placed normally, and each parameter is based on the state that the grooving blade 2 is installed in place.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (9)

1. The utility model provides a but grooving cutter of two-way drive clamp, includes cutter body (1) and grooving blade (2), blade holding groove (3) have been seted up on cutter body (1), grooving blade (2) install in blade holding groove (3), its characterized in that: the grooving tool further comprises an upper fastening piece (4), a lower clamping piece (5) and a side driving piece (6), wherein an elastic deformation groove (7) is formed in the tool body (1) so as to enable the tool body (1) to correspond to the tool body, the blade accommodating groove (3) is divided into an upper clamping portion (11) and a lower supporting portion (12), the upper fastening piece (4) is arranged on the upper clamping portion (11) and is in threaded connection with the lower clamping piece (5) arranged on the lower supporting portion (12), a clamping taper hole (51) is formed in the side portion of the lower clamping piece (5), a driving conical surface (61) matched with the clamping taper hole (51) is formed in the side portion and the end portion of the side driving piece (6), and a central shaft of the driving conical surface (61) is parallel to a central shaft of the clamping taper hole (51) and is provided with a downward eccentric E, so that the requirements are met: e is more than or equal to 0.2mm and less than or equal to 0.5mm.

2. The bi-directionally driven clampable groover tool as defined in claim 1, wherein: offer on cutter body (1) and run through locking accommodation hole (13) of last clamping part (11) and lower supporting part (12), locking accommodation hole (13) are including last accommodation section (131), spacing section (132) and the lower accommodation section (133) that set gradually, spacing section (132) inside diameter is less than go up accommodation section (131) and lower accommodation section (133) inner wall diameter, go up fastener (4) including spacing head (41) and screw thread portion (42), be equipped with internal thread hole (52) on lower screens piece (5), spacing head (41) are arranged in last accommodation section (131), screw thread portion (42) are passed spacing section (132) are with be arranged in internal thread hole (52) of lower screens piece (5) in holding section (133) down.

3. The bi-directionally driven clampable groover tool as defined in claim 2, wherein: the clearance L is arranged between the outer circumferential surface of the limiting head part (41) and the inner wall of the upper containing section (131), the threaded part (42) and the inner wall of the limiting section (132) and between the outer circumferential surface of the lower clamping part (5) and the lower containing section (133), and the requirements are satisfied: l is more than or equal to 0.2mm.

4. A bi-directionally drivable clamped slot cutter as claimed in claim 2 or claim 3, in which: the upper fastening piece (4) and the lower clamping piece (5) are coaxial, and the axis of the upper fastening piece is perpendicular to the central axis of the side driving piece (6).

5. A bi-directionally drivable clamped grooving tool according to claim 2 or 3, wherein: two clamping conical holes (51) are formed in the side portions of the lower clamping piece (5), and the two side driving pieces (6) are correspondingly arranged and are respectively located on two sides of the cutter body (1).

6. The bi-directionally driven clampable groover tool as defined in claim 5, wherein: the cone angle of the driving cone surface (61) is alpha, the cone angle of the clamping cone hole (51) is beta, and the requirements are satisfied: alpha=beta, alpha is more than or equal to 20 degrees and less than or equal to 60 degrees, beta is more than or equal to 20 degrees and less than or equal to 60 degrees.

7. A bi-directionally drivable clamped slot cutter as claimed in claim 2 or claim 3, in which: the side driving piece (6) is in threaded connection with the cutter body (1) through external threads arranged on the outer circumferential surface.

8. A bi-directionally drivable clamped slot cutter as claimed in claim 2 or claim 3, in which: the distance between the limiting surface of the upper accommodating section (131) and the elastic deformation groove (7) is L1, and the distance between the limiting surface of the lower accommodating section (133) and the elastic deformation groove (7) is L2, and the following conditions are satisfied: l1 is more than or equal to 2mm, and L2 is more than or equal to 2mm.

9. The bi-directionally driven clampable groover tool as defined in claim 7, wherein: an inner spanner hole (62) is arranged on the outer end face of the side driving piece (6).

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