Anti-vibration cutter structure for long overhanging turning

Abstract

The utility model relates to an anti-vibration cutter structure for long overhanging turning, and belongs to the technical field of machining. Comprising a cutter bar (1), a floating pressing assembly (2) and a pushing assembly (3). One end of the cutter bar (1) is fixed on a lathe saddle, and a pushing assembly (3) is arranged on the end face of the other end of the cutter bar (1); a cutter body mounting hole is formed in the cutter bar (1), and the floating pressing assembly (2) is arranged in the cutter body mounting hole; a modular and combined structure is adopted, a universal cutter bar is designed to be matched with a standard cutter body for use, the production cost of a special cutter is reduced, and the cutter utilization rate is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to an anti-vibration tool structure used for long overhang turning processing. Background Art

[0002] At present, the clamping of lathe tools usually involves opening a threaded hole on the lathe tool holder, and directly acting on the tool through the tool holder screw, thereby fixing the tool on the tool holder. Under normal circumstances, the tool overhang length generally does not exceed 1.5 to 2 times the thickness of the tool bar. When deep hole processing, the tool needs to have a long overhang and weak rigidity. Under the action of cutting force, it is easy to vibrate, and the cutting stability is poor, which is easy to affect the dimensional accuracy and surface roughness of the processed parts. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is to provide a vibration-resistant tool structure for long overhang turning processing to solve the problems of poor rigidity and poor cutting stability of existing long overhang tools.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model provides an anti-vibration tool structure for long overhang turning, comprising: a tool bar 1, a floating clamping assembly 2, and a pushing assembly 3;

[0007] One end of the tool rod 1 is fixed on the tool rest of the lathe, and a pushing assembly 3 is provided on the end surface of the other end of the tool rod 1;

[0008] The knife bar 1 is provided with a knife body mounting hole, and the floating clamping assembly 2 is arranged in the knife body mounting hole;

[0009] The floating pressing assembly 2 comprises: a first positioning device 2-1 and a second positioning device 2-2;

[0010] The first positioning device 2-1 and the second positioning device 2-2 are both provided with wedge-shaped positioning surfaces;

[0011] The first positioning device 2-1 is arranged above the second positioning device 2-2, the upper surface of the first positioning device 2-1 is in contact with the lower surface of the knife body 4, and the lower surface of the second positioning device 2-2 is in contact with the inner hole surface of the knife rod 1;

[0012] One end of the pushing component 3 is arranged outside the end surface of the knife rod 1, and the other end abuts against the second positioning device 2-2.

[0013] Wherein, two parallel planes are provided on the upper and lower sides of the right end of the tool bar 1 for clamping the tool bar 1 on the tool rest of the lathe;

[0014] The two planes match the size of the lathe tool post.

[0015] Wherein, the end surface of the knife rod 1 is provided with two mounting threaded holes.

[0016] The pushing assembly 3 is configured as a screw, and two screws are provided, which are respectively fixed at the threaded holes on the end surface of the knife rod 1;

[0017] The two threaded holes on the end faces of the two tool rods 1 are arranged in parallel along the axis direction of the tool rod 1 .

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1) Adopt modular and combined structure, design universal tool bar to match with standard tool body, reduce the production cost of special tool and improve tool utilization;

[0021] 2) The rightward thrust of the push assembly is converted into an upward clamping force of the floating clamping assembly on the cutter body. Compared with the existing technology, the contact area of ​​the cutter body clamping is increased, the reliability is high, the cutting processing stability is good, and the quality of the processed parts can be reliably guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 for Figure 1 Section view. DETAILED DESCRIPTION

[0024] In order to make the purpose, content, and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0025] This embodiment provides a vibration-resistant tool structure for long overhang turning, comprising: a tool bar 1, a floating clamping assembly 2, and a pushing assembly 3;

[0026] One end of the tool rod 1 is fixed on the tool rest of the lathe, and a pushing assembly 3 is provided on the end surface of the other end of the tool rod 1;

[0027] The knife bar 1 is provided with a knife body mounting hole, and the floating clamping assembly 2 is arranged in the knife body mounting hole;

[0028] The floating pressing assembly 2 comprises: a first positioning device 2-1 and a second positioning device 2-2;

[0029] The first positioning device 2-1 and the second positioning device 2-2 are both provided with wedge-shaped positioning surfaces;

[0030] The first positioning device 2-1 is arranged above the second positioning device 2-2, the upper surface of the first positioning device 2-1 is in contact with the lower surface of the knife body 4, and the lower surface of the second positioning device 2-2 is in contact with the inner hole surface of the knife rod 1;

[0031] One end of the pushing component 3 is arranged outside the end surface of the knife rod 1, and the other end abuts against the second positioning device 2-2.

[0032] The upper and lower sides of the right end of the tool bar 1 are provided with two parallel planes for clamping the tool bar 1 on the lathe tool holder; the two planes match the size of the lathe tool holder. The end face of the tool bar 1 is provided with two threaded holes for installation.

[0033] The pushing assembly 3 is configured as a screw, and two screws are provided, which are respectively fixed at the threaded holes on the end surface of the knife rod 1;

[0034] The two threaded holes on the end faces of the two tool rods 1 are arranged in parallel along the axis direction of the tool rod 1 .

[0035] The working process is:

[0036] Install the floating clamping assembly 2 and the cutter body 4 into the hole of the cutter rod 1, and install the pushing assembly 3 into the threaded hole of the cutter rod 1; manually tighten the pushing assembly 3 to push the second positioning device 2-2 to move to the right along the wedge-shaped positioning surface of the first positioning device 2-1, thereby pushing the cutter body 4 to move upward until the upper surface of the cutter body fits with the inner hole surface of the cutter rod 1, completing the clamping of the cutter body 4.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A vibration-resistant tool structure for long overhang turning, characterized in that: include: A knife bar (1), a floating clamping assembly (2), and a pushing assembly (3); One end of the tool rod (1) is fixed on the tool rest of the lathe, and a pushing assembly (3) is provided on the end surface of the other end of the tool rod (1); The knife rod (1) is provided with a knife body mounting hole, and the floating clamping assembly (2) is arranged in the knife body mounting hole; The floating pressing assembly (2) comprises: a first positioning device (2-1) and a second positioning device (2-2); The first positioning device (2-1) and the second positioning device (2-2) are both provided with wedge-shaped positioning surfaces; The first positioning device (2-1) is arranged above the second positioning device (2-2), the upper surface of the first positioning device (2-1) is in contact with the lower surface of the knife body (4), and the lower surface of the second positioning device (2-2) is in contact with the inner hole surface of the knife rod (1); One end of the pushing component (3) is arranged outside the end surface of the knife rod (1), and the other end abuts against the second positioning device (2-2).

2. The vibration-resistant tool structure for long overhang turning according to claim 1, characterized in that: The right end of the tool rod (1) is provided with two parallel planes on the upper and lower sides thereof, which are used for clamping the tool rod (1) on the tool rest of a lathe; The two planes match the size of the lathe tool post.

3. The vibration-resistant tool structure for long overhang turning according to claim 1, characterized in that: The end surface of the knife rod (1) is provided with two mounting threaded holes.

4. The vibration-resistant tool structure for long overhang turning according to claim 1, characterized in that: The pushing assembly (3) is configured as a screw, two of which are provided and are respectively fixed at the threaded holes on the end surface of the knife rod (1); The two end surface mounting threaded holes of the tool rod (1) are arranged in parallel along the axial direction of the tool rod (1).

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