Four-axis machining center with tool changing protection mechanism

Abstract

The utility model relates to a four-axis machining center with a tool changing protection mechanism, which comprises a four-axis machining center body and a fixing plate arranged on the surface of the four-axis machining center body, a tool bit is placed in a placing groove through the four-axis machining center body, and two clamping head ends are extruded by the tool bit, so that the tool bit is clamped in the placing groove. The two clamping heads are clamped in the annular groove in the surface of the tool bit, the supporting spring is used for tensioning the two sliding deflector rods, the tool bit is clamped and fixed, the bottom of the tool bit is suspended, the tool bit cannot be abraded, the tool bit is well protected, and the tool bit is prevented from being damaged. When the two sliding deflector rods move, the guide grooves in the surfaces of the sliding deflector rods can slide on the surfaces of the guide rods, the moving stability of the sliding deflector rods is enhanced, and the situation that when a four-axis machining center changes tools, the tool bits are prone to falling off and collided to be damaged due to the lack of the tool changing protection effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of four-axis machining center equipment, in particular to a four-axis machining center with a tool changing protection mechanism. Background Art

[0002] A four-axis machining center generally adds a rotating axis, usually called the fourth axis, and the corresponding machining center is a four-axis machining center. In the prior art, the four-axis machining center lacks tool change protection when changing tools, which causes the tool head to fall off easily, the tool head to collide and cause damage, and the clamping of other tool heads is not firm enough.

[0003] For example, a four-axis machining center disclosed in the authorized patent document with application number 201921774350.8. The four-axis machining center includes a base, a machining turntable for machining workpieces, and a protective device, characterized in that a base for placing the machining turntable is fixed on the base, and the protective device includes a movable door and a protective cover, the movable door is installed on a bracket fixed to the upper part of the base, and a dustproof support tube is also provided on the bracket, the upper part of the protective cover is supported by the dustproof support tube, and the lower part of the protective cover is located at the lower part of the bracket; there are at least two machining turntables; the four-axis machining center also includes a spindle unit, and the spindle unit includes an X-axis motion unit, a Y-axis motion unit and a Z-axis motion unit, the X-axis motion unit is arranged on the bracket, and the Y-axis motion unit and the Z-axis motion unit are arranged on the machining turntable. This application solves the technical problem of low machining efficiency caused by inconvenience in use during metal machining.

[0004] The above patent has the problem that the four-axis machining center lacks tool change protection when changing tools, which causes the tool head to fall off easily and the tool head to collide and cause damage. Therefore, we need to provide a four-axis machining center with a tool change protection mechanism. Utility Model Content

[0005] The utility model aims to provide a four-axis machining center with a tool changing protection mechanism, wherein the tool head is placed in a placement groove through the four-axis machining center body, and the tool head is squeezed by two clamping head ends, thereby driving two sliding levers to move on the sliding levers and move away from each other, and the supporting spring is stretched until the two clamping heads are clamped in the annular grooves on the surface of the tool head, and the two sliding levers are tightened by the supporting spring to clamp and fix the tool head, and the bottom of the tool head is suspended, which will not cause wear to the tool head and better protect the tool head. When the two sliding levers move, the guide grooves on the surface of the sliding levers will slide on the surface of the guide rods, thereby enhancing the stability of the sliding lever movement, avoiding the lack of tool changing protection effect when the four-axis machining center changes the tool, resulting in the tool head being easy to fall off, and the tool head colliding and causing damage, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a four-axis machining center with a tool change protection mechanism, comprising:

[0007] A four-axis machining center body, and a fixing plate installed on the surface of the four-axis machining center body;

[0008] A tool changer disc disposed on the top of the fixed plate, and a driving member installed inside the fixed plate for rotating the tool changer disc;

[0009] A position limiting protection mechanism disposed inside the tool changer for fixing different tool heads;

[0010] The limit protection mechanism includes a groove body, a sliding rod, a supporting spring, a sliding lever, a clamping head end and a placement groove. Six placement grooves are opened inside the tool changing disc, and one side of the six placement grooves is connected to the groove body. The groove body is arranged inside the tool changing disc, and a sliding rod is fixedly installed inside the groove body. Two sliding levers are slidably installed on the surface of the sliding rod, and a supporting spring is clamped between the adjacent sides of the two sliding levers. The supporting spring is movably sleeved on the surface of the sliding rod, and one end of the two sliding levers is integrally machined with a clamping head end, and the two clamping head ends are used to clamp the groove on the surface of the tool body.

[0011] Preferably, guide rods are fixedly mounted on both sides of the inner wall of the groove body, and guide grooves matched with the guide rods are formed on the surfaces of the two sliding levers.

[0012] Preferably, a limit piece for limiting the movement of the sliding lever is provided on the top of the tool changing disc, and the limit piece includes a cylinder, a floating plate, an insertion rod and a socket. A socket connected to the groove body is opened on the top of the tool changing disc, and two cylinders are embedded in the top of the tool changing disc. Floating plates are installed on the upper ends of the two cylinders. Six insertion rods are integrally machined on the surface of the floating plate, and the surfaces of the insertion rods are slidably installed with the inside of the insertion rods.

[0013] Preferably, the clamping head end is configured as an arc-shaped head.

[0014] Preferably, the driving member includes a driving motor and an output rod, the driving motor is fixedly mounted on the bottom of the fixed plate, the output end of the driving motor is mounted with an output rod, and the upper end of the output rod passes through the top of the fixed plate and is connected to the bottom of the tool changing disc.

[0015] Preferably, the driving motor is configured as a stepping motor.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model places the cutter head in the placement groove through the four-axis machining center body, and squeezes the cutter head with two clamping head ends, thereby driving the two sliding levers to move on the sliding levers and move away from each other, and the supporting spring is stretched until the two clamping heads are clamped at the annular grooves on the surface of the cutter head, and the two sliding levers are tightened by the supporting spring to clamp and fix the cutter head, and the bottom of the cutter head is suspended, which will not cause wear to the cutter head and better protect the cutter head. When the two sliding levers move, the guide grooves on the surfaces of the sliding levers will slide on the surfaces of the guide rods, which enhances the stability of the movement of the sliding levers and avoids the lack of tool change protection effect when the four-axis machining center changes the tool, which causes the cutter head to fall off easily and the cutter head to collide and cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the tool changer of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the position limiting protection mechanism of the utility model.

[0021] In the figure: 1. four-axis machining center body; 2. fixed plate; 3. tool changer; 4. driving part; 41. driving motor; 42. output rod; 5. limit protection mechanism; 51. slot body; 52. slide rod; 53. support spring; 54. sliding lever; 55. clamping head end; 56. placement slot; 6. guide rod; 7. guide slot; 8. limit part; 81. cylinder; 82. floating plate; 83. plug rod; 84. socket. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] See also Figure 1-3 The utility model provides a technical solution: a four-axis machining center with a tool change protection mechanism, comprising:

[0024] A four-axis machining center body 1, and a fixing plate 2 installed on the surface of the four-axis machining center body 1;

[0025] A tool changer 3 is arranged on the top of the fixed plate 2, and a driving member 4 is installed inside the fixed plate 2 for rotating the tool changer 3;

[0026] A position limiting protection mechanism 5 is arranged inside the tool changer 3 and is used to fix different tool heads;

[0027] The limit protection mechanism 5 includes a groove body 51, a slide rod 52, a support spring 53, a sliding lever 54, a clamping head end 55 and a placement groove 56. Six placement grooves 56 are opened inside the tool changing disc 3, and one side of the six placement grooves 56 is connected to the groove body 51. The groove body 51 is arranged inside the tool changing disc 3. A slide rod 52 is fixedly installed inside the groove body 51. Two sliding levers 54 are slidably installed on the surface of the slide rod 52, and a support spring 53 is clamped between the adjacent sides of the two sliding levers 54. The support spring 53 is movably sleeved on the surface of the slide rod 52. One end of the two sliding levers 54 is integrally machined with a clamping head end 55, and the two clamping head ends 55 are used to clamp the groove on the surface of the tool body.

[0028] Guide rods 6 are fixedly mounted on both sides of the inner wall of the groove body 51, and guide grooves 7 matching with the guide rods 6 are formed on the surfaces of the two sliding levers 54;

[0029] In this embodiment, the tool head is placed in the placement groove 56 through the four-axis machining center body 1, and the tool head is squeezed against the two clamping head ends 55, thereby driving the two sliding rods 54 to move on the slide rod 52 and move away from each other, and the support spring 53 is stretched until the two clamping heads are clamped in the annular groove on the surface of the tool head, and the two sliding rods 54 are tightened by the support spring 53 to clamp and fix the tool head. The bottom of the tool head is suspended, which will not cause wear to the tool head and better protect the tool head. When the two sliding rods 54 move, the guide groove 7 on the surface of the sliding rod 54 will slide on the surface of the guide rod 6, thereby enhancing the stability of the movement of the sliding rod 54. A protective shell can be provided to protect the tool changing disc 3, or the tool changing disc 3 can be moved and adjusted for storage.

[0030] A limiter 8 for limiting the movement of the sliding lever 54 is provided on the top of the tool changer 3. The limiter 8 includes a cylinder 81, a floating plate 82, an insertion rod 83 and a socket 84. A socket 84 connected to the slot 51 is provided on the top of the tool changer 3. Two cylinders 81 are embedded in the top of the tool changer 3. The upper ends of the two cylinders 81 are installed with floating plates 82. Six insertion rods 83 are integrally processed on the surface of the floating plate 82. The surface of the insertion rod 83 is slidably installed with the inside of the insertion rod 83.

[0031] Specifically, the two sliding levers 54 clamp the cutter head under the tension of the supporting springs 53. At this time, the two cylinders 81 are started to drive the floating plate 82 to move downward, and the insertion rod 83 on the surface of the floating plate 82 will penetrate the insertion hole 84 on the top of the tool changing plate 3 until the insertion rod 83 is inserted into the groove body 51 and contacts the sliding lever 54, thereby affecting the movement of the sliding lever 54 and having an anti-detachment protection effect on the fixed cutter head.

[0032] In order to ensure that the movement of the cutter head can squeeze the movement of the two sliding levers 54, the clamping head end 55 is set to be an arc-shaped, and the clamping head end 55 is set to be an arc-shaped head.

[0033] The driving member 4 includes a driving motor 41 and an output rod 42. The driving motor 41 is fixedly mounted on the bottom of the fixed plate 2. The output end of the driving motor 41 is mounted with the output rod 42. The upper end of the output rod 42 passes through the top of the fixed plate 2 and is connected to the bottom of the tool changer 3.

[0034] Furthermore, the driving motor 41 is started to drive the output rod 42 to rotate, thereby controlling the tool change disc 3 to rotate and selecting the required tool head for assembly.

[0035] The driving motor 41 is configured as a stepping motor;

[0036] Specifically, a stepper motor is a special motor that can convert electrical pulse signals into angular displacement or linear displacement. Its rotation is performed step by step at a fixed angle. The speed and stop position of the stepper motor only depend on the frequency and number of pulses of the pulse signal, and are not affected by load changes. By controlling the number of pulses, the angular displacement can be controlled, thereby achieving accurate positioning.

[0037] The device places the cutter head in the placement groove 56 through the four-axis machining center body 1, and squeezes the cutter head into the two clamping head ends 55, thereby driving the two sliding levers 54 to move on the slide bar 52 and move away from each other, and the support spring 53 is stretched until the two clamping heads are clamped in the annular groove on the surface of the cutter head, and the two sliding levers 54 are tightened by the support spring 53 to clamp and fix the cutter head. The bottom of the cutter head is suspended, which will not cause wear to the cutter head and better protect the cutter head. The two sliding levers 54 move When the tool is moved downward, the guide groove 7 on the surface of the sliding lever 54 will slide on the surface of the guide rod 6, thereby enhancing the stability of the movement of the sliding lever 54. The two sliding levers 54 clamp the tool head under the tension of the support spring 53. At this time, the two cylinders 81 are started to drive the floating plate 82 to move downward. The insertion rod 83 on the surface of the floating plate 82 will penetrate the insertion hole 84 on the top of the tool changing plate 3 until the insertion rod 83 is inserted into the groove body 51 and contacts the sliding lever 54, thereby affecting the movement of the sliding lever 54 and providing anti-detachment protection for the fixed tool head.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-axis machining center with a tool change protection mechanism, characterized in that: include: A four-axis machining center body (1), and a fixing plate (2) mounted on the surface of the four-axis machining center body (1); A tool change disc (3) disposed on the top of the fixed plate (2), and a driving member (4) installed inside the fixed plate (2) for rotating the tool change disc (3); A position limiting protection mechanism (5) disposed inside the tool changing disc (3) and used for fixing different tool heads; The position limiting protection mechanism (5) comprises a slot body (51), a slide rod (52), a support spring (53), a sliding lever (54), a clamping head end (55) and a placement slot (56). Six placement slots (56) are provided inside the tool changing disc (3). One side of the six placement slots (56) is connected to the slot body (51). The slot body (51) is arranged inside the tool changing disc (3). A slide rod (52) is fixedly installed inside the slot body (51). Two slide levers (54) are slidably installed on the surface of the slide rod (52). A support spring (53) is clamped between adjacent sides of the two slide levers (54). The support spring (53) is movably sleeved on the surface of the slide rod (52). One end of the two slide levers (54) is integrally processed with a clamping head end (55), and the two clamping head ends (55) are used to clamp the groove on the surface of the tool body.

2. A four-axis machining center with a tool change protection mechanism according to claim 1, characterized in that: Guide rods (6) are fixedly mounted on both sides of the inner wall of the groove body (51), and guide grooves (7) matching the guide rods (6) are formed on the surfaces of the two sliding levers (54).

3. A four-axis machining center with a tool change protection mechanism according to claim 1, characterized in that: A limiter (8) for limiting the movement of the sliding lever (54) is arranged at the top of the tool changing disc (3), and the limiter (8) comprises a cylinder (81), a floating disc (82), an insertion rod (83) and a socket (84). A socket (84) connected to the groove body (51) is provided at the top of the tool changing disc (3). Two cylinders (81) are embedded in the top of the tool changing disc (3), and floating discs (82) are installed at the upper ends of the two cylinders (81). Six insertion rods (83) are integrally processed on the surface of the floating disc (82), and the surface of the insertion rod (83) is slidably installed with the inside of the insertion rod (83).

4. A four-axis machining center with a tool change protection mechanism according to claim 1, characterized in that: The clamping head end (55) is configured as an arc-shaped head.

5. The four-axis machining center with a tool change protection mechanism according to claim 1, characterized in that: The driving member (4) comprises a driving motor (41) and an output rod (42); the driving motor (41) is fixedly mounted on the bottom of the fixed plate (2); the output rod (42) is mounted on the output end of the driving motor (41); and the upper end of the output rod (42) passes through the top of the fixed plate (2) and is connected to the bottom of the tool change disc (3).

6. A four-axis machining center with a tool change protection mechanism according to claim 5, characterized in that: The driving motor (41) is configured as a stepping motor.

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