Thread milling cutter with adjustable clamping length

Abstract

The utility model relates to the technical field of thread milling cutters, in particular to a thread milling cutter with adjustable clamping length, which comprises a thread milling cutter and a clamp, the thread milling cutter consists of a cutter bar, a cutter head and a cutter holder, the cutter holder is provided with grooves which are uniformly distributed and correspond to the clamp, the cutter holder is provided with a reinforcing structure for reinforcing the clamp and the cutter holder, and the clamp and the cutter holder are arranged in the grooves. The cutter bar and the cutter holder are provided with matched threaded coils, and four positioning rods which are distributed in the circumferential direction and extend into the cutter bar are arranged in the cutter holder in a sliding and sleeved mode. The clamp corresponds to one of the grooves, the contact degree between the clamp and the tool apron can be reinforced through the reinforcing plate and the ring sleeve, and then the connection degree between the tool apron and the clamp is ensured; the tool apron is rotated so that the tool bar and the tool apron can be connected, the tool apron and the tool bar can be connected through movement of the positioning rod, and the stability of the tool bit can be ensured after the tool apron and the tool bar are connected.

Description

TECHNICAL FIELD

[0001] The utility model relates to thread milling cutter technical field especially relates to a clamping length adjustable thread milling cutter. BACKGROUND

[0002] Thread milling cutter is a kind of cutter for thread milling on three-axis linkage machine tool (machining center).

[0003] According to the announcement number CN216881927U discloses a kind of thread milling cutter of convenient adjustment clamping length, including guide rod, its upper end is fixedly installed with installation head. Wherein is through the cooperation between insertion slot one, insertion rod two, insertion rod one and insertion slot two, can quickly the butt joint of tool bar and tool head is carried out;By being symmetrically set up in the two sides of tool bar inner wall with several clamping grooves, to realize the adjustment of clamping length. Above-mentioned folder and one of clamping grooves correspond to each other after, not fixture and tool bar are reinforced, this makes tool head slip between fixture and tool bar when processing, further influence the operation of tool head;Tool bar and tool head are only realized three-point butt joint by insertion rod, and the pressure generated when tool head operates will be transferred to the connecting place of tool bar and tool head, so that the rupture between tool head and tool bar occurs, which needs to be reassembled. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem that the connection between tool bar and tool holder is not good in the prior art, which leads to rupture, and provides a thread milling cutter with adjustable clamping length.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A thread milling cutter with adjustable clamping length includes a thread milling cutter and a clamp, and the thread milling cutter is composed of a tool bar, a tool head and a tool holder. The tool holder is provided with uniformly distributed grooves corresponding to the clamp. A reinforcing structure is installed on the tool holder to reinforce the clamp and the tool holder. Thread coils are provided on the tool bar and the tool holder. Four positioning rods are slidably arranged in the tool holder and extend into the tool bar. A pressing assembly is installed on the tool bar to press the positioning rods.

[0007] Preferably, the reinforcing structure includes a reinforcing plate fixedly installed on the clamp. A ring sleeve is installed on the tool holder and extends to the reinforcing plate. Thread coils are provided on the ring sleeve and the reinforcing plate.

[0008] Preferably, the reinforcing plate is arranged on both sides of the clamp. The reinforcing plate is an arc-shaped structure matching the tool holder. The ring sleeve is a ring-shaped structure matching the reinforcing plate.

[0009] Preferably, the pressing assembly comprises a pressing plate fixedly installed on the positioning rod, the knife rod is fixedly installed with a pressing rod, and the output end of the pressing rod is fixedly connected with a pressing head movably abutting against the pressing plate, the knife seat is slidably sleeved with a moving plate connected with the positioning rod, and a spring is welded between the moving plate and the knife seat.

[0010] Preferably, the knife seat is provided with a guide groove corresponding to the pressing rod, and the pressing plate and the positioning rod extend to one side position in the guide groove.

[0011] Preferably, the knife rod is provided with a positioning groove corresponding to the positioning rod, the knife seat is provided with a limiting groove for guiding the moving plate, and the two ends of the spring are respectively connected with the limiting groove and the moving plate.

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

[0013] 1. The utility model discloses a fixture corresponding to one groove, which can adjust the position of the tool bit, and the reinforcing plate and the ring sleeve can reinforce the contact degree between the fixture and the knife seat, thereby ensuring the connection degree of the knife seat and the fixture.

[0014] 2. The utility model discloses a fixture corresponding to one groove, which can adjust the position of the tool bit, and the reinforcing plate and the ring sleeve can reinforce the contact degree between the fixture and the knife seat, thereby ensuring the connection degree of the knife seat and the fixture. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a structure diagram of a thread milling cutter with adjustable clamping length;

[0016] Figure 2 The utility model discloses a knife rod sectional view of a thread milling cutter with adjustable clamping length;

[0017] Figure 3 The utility model discloses a thread milling cutter with adjustable clamping length;

[0018] Figure 4 The utility model discloses a knife seat sectional view of a thread milling cutter with adjustable clamping length.

[0019] In the drawing: 1, knife rod; 2, tool bit; 3, knife seat; 4, groove; 5, fixture; 6, reinforcing plate; 7, ring sleeve; 8, pressing rod; 9, guide groove; 10, pressing head; 11, positioning rod; 12, pressing plate; 13, spring. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] With reference to Figures 1-4 A clamping length-adjustable thread milling cutter, comprising a thread milling cutter and a clamp 5, and the thread milling cutter is composed of a cutter bar 1, a cutter head 2 and a cutter seat 3.

[0022] The cutter seat 3 is provided with uniformly distributed grooves 4 corresponding to the clamp 5, the position of the cutter head 2 can be adjusted after the clamp 5 corresponds to one of the grooves 4, and the cutter seat 3 is provided with a reinforcing structure for reinforcing the clamp 5 and the cutter seat 3.

[0023] The reinforcing structure comprises a reinforcing plate 6 fixedly installed on the clamp 5, the cutter seat 3 is provided with a ring sleeve 7 extending to the reinforcing plate 6, and the ring sleeve 7 and the reinforcing plate 6 are provided with matched thread coils, the reinforcing plate 6 is arranged at both sides of the clamp 5, the reinforcing plate 6 is an arc-shaped structure matched with the cutter seat 3, the ring sleeve 7 is a ring-shaped structure matched with the reinforcing plate 6, the reinforcing plate 6 is installed between the two clamps 5, the ring sleeve 7 can press the reinforcing plate 6 and the clamp 5 from the outside, and the contact area of the clamp 5 and the cutter seat 3 can be further increased.

[0024] The cutter bar 1 and the cutter seat 3 are provided with matched thread coils, the cutter bar 1 and the cutter seat 3 can be preliminarily connected through the thread coils, the cutter seat 3 is slidably provided with four circumferentially distributed positioning rods 11 extending into the cutter bar 1, and the cutter bar 1 is provided with a pressing assembly for pressing the positioning rods 11.

[0025] The pressing assembly comprises a pressing plate 12 fixedly installed on the positioning rod 11, the cutter bar 1 is fixedly provided with a pressing rod 8, the output end of the pressing rod 8 is fixedly connected with a pressing head 10 movably abutting against the pressing plate 12, the cutter seat 3 is slidably provided with a moving plate connected with the positioning rod 11, and the moving plate and the cutter seat 3 are welded with a spring 13, the cutter bar 1 guides the positioning rod 11 to stably extend into the cutter bar 1 when the positioning rod 11 moves.

[0026] The guiding groove 9 corresponding to the pressing rod 8 is formed on the tool seat 3, the pressing plate 12 and the positioning rod 11 extend to one side position in the guiding groove 9, the pressing plate 12 is pressed by the pressing rod 8 and the pressing head 10 moving in the guiding groove 9, the positioning rod 11 is extended into the positioning groove by the pressing plate 12, thereby connecting the tool rod 1 and the tool seat 3, and the connecting degree of the tool rod 1 and the tool seat 3 is increased, so that the tool head 2 can stably work, the positioning groove corresponding to the positioning rod 11 is formed in the tool rod 1, the limiting groove for guiding the moving plate is formed in the tool seat 3, the two ends of the spring 13 are connected with the limiting groove and the moving plate respectively, the limiting groove realizes the guiding effect of the moving plate, and when the pressing plate 12 is in the idle state, the pressing plate 12 and the positioning rod 11 return to the initial position under the action of the spring 13.

[0027] The function principle of the utility model can be described by the following operation mode:

[0028] The tool seat 3 is extended into the tool rod 1, the tool rod 1 is rotated, the tool seat 3 and the tool rod 1 are slowly connected under the action of the screw coil, the pressing rod 8 drives the pressing head 10 to slide in the guiding groove 9, the pressing head 10 continuously moves to press the pressing plate 12, the pressing plate 12 drives the positioning rod 11 to penetrate the tool seat 3 and extend into the positioning groove in the tool rod 1, the positioning rod 11 drives the moving plate to slide in the limiting groove, the spring 13 is stressed, thereby connecting the tool seat 3 and the tool rod 1;

[0029] According to the position of the machine tool, the clamp 5 can extend into one of the grooves 4, the reinforcing plate 6 is installed on the clamp 5, the ring sleeve 7 is lifted and rotated, the ring sleeve 7 can press the clamp 5 through the reinforcing plate 6, and the position of the tool head 2 can be adjusted.

[0030] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A clamping length-adjustable thread milling cutter, comprising a thread milling cutter and a clamp (5), and the thread milling cutter is composed of a cutter bar (1), a cutter head (2) and a cutter seat (3), characterized in that, The cutter seat (3) is provided with uniformly distributed recesses (4) corresponding to the clamps (5), the cutter seat (3) is provided with a reinforcing structure for reinforcing the clamps (5) and the cutter seat (3), the cutter rod (1) and the cutter seat (3) are provided with matched thread coils, the cutter seat (3) is slidably provided with four circumferentially distributed positioning rods (11) extending into the cutter rod (1), and the cutter rod (1) is provided with a pressing assembly for pressing the positioning rods (11).

2. A chucking length adjustable thread milling cutter according to claim 1, characterized in that The reinforcing structure comprises a reinforcing plate (6) fixedly installed on the clamp (5), the cutter seat (3) is provided with a ring sleeve (7) extending to the reinforcing plate (6), and the ring sleeve (7) and the reinforcing plate (6) are provided with matched thread coils.

3. A chucking length adjustable thread milling cutter according to claim 2, wherein The reinforcing plate (6) is arranged at both sides of the clamp (5), the reinforcing plate (6) is an arc-shaped structure matched with the cutter seat (3), and the ring sleeve (7) is a ring-shaped structure matched with the reinforcing plate (6).

4. The thread milling cutter according to claim 1, wherein The pressing assembly comprises a pressing plate (12) fixedly installed on the positioning rod (11), the cutter rod (1) is fixedly provided with a pressing rod (8), and the output end of the pressing rod (8) is fixedly connected with a pressing head (10) movably abutting against the pressing plate (12), the cutter seat (3) is slidably provided with a moving plate connected with the positioning rod (11), and a spring (13) is welded between the moving plate and the cutter seat (3).

5. A chucking length adjustable thread milling cutter according to claim 4, wherein The cutter seat (3) is provided with a guide groove (9) corresponding to the pressing rod (8), and the pressing plate (12) and the positioning rod (11) extend to one side of the guide groove (9).

6. A chucking length adjustable thread milling cutter according to claim 4, wherein The cutter rod (1) is provided with a positioning groove corresponding to the positioning rod (11), the cutter seat (3) is provided with a limiting groove for guiding the moving plate, and the two ends of the spring (13) are connected with the limiting groove and the moving plate, respectively.

Images