Vibration-resistant vertical combined turning tool bar structure

Abstract

The utility model belongs to the field of machining, and particularly relates to an anti-vibration connecting structure of a vertical combined turning tool bar, the combined turning tool bar comprises a main tool bar and an SVJCR tool bar, the main tool bar is provided with an opening and a connecting hole, a connecting shaft of the SVJCR tool bar is installed in the connecting hole and locks the opening, and the SVJCR tool bar is connected with the main tool bar. The device is used for eliminating a mounting gap between a connecting shaft and a connecting hole of the SVJCR cutter bar. Compared with the prior art, the vertical combined turning tool bar structure disclosed by the utility model is simple in structure and convenient to manufacture, assemble and disassemble; firm connection under inevitable cutting vibration can be kept; and the connection of the vertical combination of the turning tool bar with smaller radial dimension is particularly facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing, in particular to a vibration-resistant vertical combined turning tool rod connection structure. Background Art

[0002] In machining, such as Figure 3 As shown, the processing of deep concave cavity parts with "small mouth and big belly" is often involved. The vertical combination turning tool bar is required for the processing of such deep concave cavity parts. The processing characteristics of such deep concave cavity parts limit the rigidity of the vertical combination turning tool bar and the inevitable cutting vibration. Under the inevitable cutting vibration processing conditions, whether the connection structure of the vertical combination turning tool bar can maintain firm clamping is the key.

[0003] At present, the machining industry, such as Figure 2 As shown in the figure, the connection structure used for the vertical combination turning tool bar in production is mostly the traditional structure of tightening the SVJCR tool bar with the end screw. This structure is simple to manufacture and convenient for tool bar connection. However, for the vertical combination turning tool bar with smaller radial dimensions, it is easy to loosen because only one screw can be used to tighten the SVJCR tool bar; in addition, the concave screw hole at the end of the main tool bar will greatly weaken the rigidity of the main tool bar. When the SVJCR tool bar is installed with this end screw tightening, there is a gap between the tool bar combinations, and this gap cannot be eliminated, and thus it cannot resist the vibration and loosening when the cutting vibration produces a lever effect on the connected turning tool bar. Utility Model Content

[0004] The purpose of the utility model is to provide a vibration-resistant vertical combination turning tool rod connection structure. In view of the unfavorable processing conditions in which the processing characteristics of deep concave cavities on parts limit the rigidity of the vertical combination turning tool rod and the inevitable cutting vibration, a connection structure with screw tightening opening and gapless clamping is adopted to vertically combine turning tool rods with smaller radial dimensions to resist the vibration loosening caused by the lever effect of cutting vibration on the connected turning tool rods.

[0005] The technical solution for achieving the purpose of the utility model is: a vibration-resistant vertical combined turning tool bar structure, characterized in that the combined tool bar includes a main tool bar and a SVJCR tool bar, the main tool bar is provided with an opening and a connecting hole, the connecting shaft of the SVJCR tool bar is installed in the connecting hole, and the opening is locked to eliminate the installation gap between the connecting shaft and the connecting hole of the SVJCR tool bar.

[0006] Furthermore, the combined tool bar also includes a locking screw for locking the opening on the main tool bar.

[0007] Further, the axis of the locking screw is perpendicular to the plane of the opening.

[0008] Furthermore, the connecting hole is arranged at the tail end of the opening on the main blade rod.

[0009] Furthermore, a turning tool is installed on the end of the SVJCR tool bar away from the connecting shaft.

[0010] Furthermore, there is a transition fit between the diameter of the connecting hole and the connecting shaft on the SVJCR tool rod.

[0011] Furthermore, the material of the SVJCR arbor is high speed steel.

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] 1. The vertical combined turning tool bar structure disclosed in the utility model has a simple structure and is easy to manufacture and disassemble;

[0014] 2. The vertical combined turning tool bar structure disclosed in the utility model eliminates gaps by providing an opening 3 and a locking screw 2 on the main tool bar 1, and can maintain a firm connection under inevitable cutting vibration;

[0015] 3. The vertical combined turning tool rod structure disclosed by the utility model does not need to open a tightening threaded hole on the end face of the main turning tool, but only needs to tighten the opening with side screws or other methods. This arrangement is particularly beneficial for vertical combined tool rods with smaller radial dimensions, thereby maintaining the rigidity of the main tool rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a vertical combination turning tool bar with a single screw to tighten the opening;

[0017] Figure 2 It is a schematic diagram of a vertical combined turning tool bar tightened by a single screw;

[0018] Figure 3 It is an illustration of the characteristics of a deep concave cavity with a small mouth and a big belly on a part.

[0019] In the figure: 1-main tool bar; 2-locking screw; 3-opening; 4-connecting hole; 5-SVJCR (inner diameter spherical) tool bar. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The utility model discloses a vibration-resistant vertical combined turning tool bar structure, comprising a main tool bar 1, a locking screw 2, and a SVJCR tool bar 5;

[0022] An opening 3 is processed at the end of the main tool rod 1 by means of a wire cutting machine, and a connecting hole 4 is provided on the main tool rod 1 near the bottom of the opening 3, and the connecting hole 4 is used for matching and installing with the connecting shaft (i.e., a circular tool handle) on the SVJCR tool rod 5; a threaded hole is provided on the side of the main tool rod 1 near the end and perpendicular to the direction of the surface formed by the opening 3, for installing a locking screw 2; a turning tool is installed on the end of the SVJCR tool rod 5 away from the connecting shaft.

[0023] The material of SVJCR shank 5 is high speed steel;

[0024] The diameter of the connecting hole 4 and the connecting shaft on the SVJCR tool bar 5 adopt transition fit;

[0025] During installation, install the connecting shaft of the SVJCR tool bar 5 into the connecting hole 4, screw the locking screw 2 into the threaded hole on the main tool bar 1 to tighten the opening 3, and eliminate the matching clearance between the connecting hole 4 and the SVJCR tool bar 5 until the SVJCR tool bar 5 cannot rotate in the connecting hole 4, thus completing the connection of the vertical combination turning tool bar. During specific processing, high linear speed, shallow cutting depth, and fast feed reverse pull layered cutting are adopted to further reduce cutting vibration and facilitate timely discharge of chips.

[0026] Example

[0027] like Figure 3 As shown in the figure, it is a schematic diagram of the structure and parameters of a deep concave cavity hole with a "small mouth and a big belly" on a certain part. The material of the part is modulated 40Cr. Judging from the size of the deep concave cavity in the figure, a vertical combined turning tool rod is used for reverse pulling and layered cutting from both ends.

[0028] Use Figure 3 As shown, the vertical combined tool bar for processing the right end hole is: the diameter of the main tool bar 1 is Φ12mm, the diameter of the SVJCR tool bar 5 is Φ8mm, the vertical effective extension (the distance from the turning tool tip to the side of the main tool bar 1) is 14.5mm (tool bar); layered cutting of the Φ54mm hole and the holes on the right side.

[0029] The vertical combination turning tool bar for processing the left end hole is: the diameter of the main tool bar 1 is Φ14mm, the diameter of the SVJCR tool bar 5 is Φ8mm, and the vertical effective extension (the distance from the tool tip to the side of the main tool bar 1) is 18mm; layered cutting of the Φ59mm hole and the holes on the left side.

[0030] The vertical effective extension is determined by the required processing depth.

[0031] The width (the distance between the two faces) of the openings 3 of the two main tool bars is 0.3 mm.

[0032] The utility model discloses a processing and installation method of a vibration-resistant vertical combined turning tool rod structure:

[0033] (1) The main tool bar 1 is a self-made tool bar or a discarded standard turning tool bar;

[0034] (2) Drill and tap the threaded hole for locking screw 2;

[0035] (3) The wire cutting machine cuts the opening 3 and the connecting hole 4;

[0036] (4) The SVJCR tool bar 5 is made of Φ8 high-speed steel and is equipped with a tough cemented carbide semi-finishing turning blade.

[0037] 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 creative work are within the scope of protection of the utility model.

Claims

1. A vibration-resistant vertical combined turning tool bar structure, characterized in that: It includes a main tool rod, a locking screw and a SVJCR tool rod. The main tool rod is provided with an opening and a connecting hole. The connecting shaft of the SVJCR tool rod is installed in the connecting hole, and the opening is locked by the locking screw to eliminate the installation gap between the connecting shaft and the connecting hole of the SVJCR tool rod.

2. The vibration-resistant vertical combined turning tool bar structure according to claim 1, characterized in that: The axis of the locking screw is perpendicular to the plane of the opening.

3. The vibration-resistant vertical combined turning tool bar structure according to claim 1, characterized in that: The connecting hole is arranged at the tail end of the opening on the main blade rod.

4. The anti-vibration vertical combined turning tool bar structure according to claim 1, characterized in that: A turning tool is installed on the end of the SVJCR tool bar away from the connecting shaft.

5. The vibration-resistant vertical combined turning tool bar structure according to claim 1, characterized in that: The diameter of the connecting hole and the connecting shaft on the SVJCR tool bar are transition fits.

6. The vibration-resistant vertical combined turning tool bar structure according to claim 1, characterized in that: The material of SVJCR tool bar is high speed steel.

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