Headstock assembly

Abstract

The invention relates to a headstock assembly, and belongs to the field of machine tools. The headstock assembly comprises a headstock base, a self-aligning bearing, a hollow shaft and a speed reducing motor, the hollow shaft is installed on the headstock base through the self-aligning bearing, the speed reducing motor is installed at one end of the hollow shaft, the headstock assembly is structurally characterized by further comprising an angle swinging device, the angle swinging device is installed on the speed reducing motor, and the headstock assembly further comprises a balance arm device. The hollow shaft is sleeved with the balance arm device, the balance arm device is connected with the headstock base, the headstock assembly further comprises a hoop device, the hollow shaft is sleeved with the hoop device, the hoop device is installed on the headstock base, the balance arm device comprises a balance arm and a tension spring, the hollow shaft is fixedly sleeved with the balance arm, and the tension spring is connected with the balance arm device. One end of the tension spring is connected with the balance arm, and the other end of the tension spring is connected with the headstock seat.

Description

Technical Field

[0001] The invention relates to a machine head frame assembly and belongs to the field of machine tools. Background Art

[0002] A milling machine mainly refers to a machine tool that uses a milling cutter to process various surfaces of a workpiece. Usually, the main motion is the rotation of the milling cutter, and the movement of the workpiece and the milling cutter is the feed motion. A grinder is a machine tool that uses a grinding tool to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding.

[0003] The tool is installed on the machine head assembly. When the tool is a grinding wheel, the machine tool is a grinder. When the tool is a milling cutter, the machine tool is a milling machine. When a grinder or a milling machine is used to process a workpiece, the angle and position of the machine head assembly need to be adjusted so that the workpiece can be processed by the tool. In the prior art, after the angle and position of the machine head assembly are adjusted, its position cannot be fixed, resulting in poor stability of the machine head assembly during operation. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a headstock assembly with a reasonable structural design.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: the head frame assembly includes a head frame seat, a self-aligning bearing, a hollow shaft and a reduction motor, the hollow shaft is installed on the head frame seat through the self-aligning bearing, and the reduction motor is installed at one end of the hollow shaft. Its structural feature is that it also includes a swing angle device, and the swing angle device is installed on the reduction motor.

[0006] Furthermore, the headstock assembly also includes a balancing arm device, which is sleeved outside the hollow shaft and connected to the headstock seat.

[0007] Furthermore, the headstock assembly also includes a clamping device, which is sleeved outside the hollow shaft and installed on the headstock seat.

[0008] Furthermore, the balancing arm device includes a balancing arm and a tension spring, the balancing arm is sleeved and fixed outside the hollow shaft, one end of the tension spring is connected to the balancing arm, and the other end of the tension spring is connected to the machine head frame.

[0009] Furthermore, the clamp device includes a tightening screw, a clamp body, a locking buckle and a locking cylinder, the tightening screw is installed on the machine head frame, the clamp body is sleeved outside the hollow shaft, the lower end of the clamp body is in contact with the tightening screw, and the upper end of the clamp body is locked by the locking buckle and the locking cylinder.

[0010] Furthermore, the locking buckle is arranged in a U-shaped structure, and a circular hole and a waist-shaped hole are arranged on the locking buckle. A locking pin is installed on the upper end of each of the two clamp bodies, and the two locking pins are respectively located in the circular hole and the waist-shaped hole. The cylinder barrel of the locking cylinder is installed in the locking buckle, and the piston rod of the locking cylinder is abutted against the locking pin located in the waist-shaped hole.

[0011] Furthermore, an arc-shaped protrusion structure is provided on the clamp body, and the arc-shaped protrusion structure is in contact with the tightening screw.

[0012] Furthermore, the swing angle device includes a swing angle seat and a swing angle driving mechanism, the swing angle seat is installed on the reduction motor, and the swing angle driving mechanism cooperates with the swing angle seat.

[0013] Furthermore, a swing angle seat cavity is provided on the swing angle seat, and the swing angle drive mechanism includes a swing angle drive motor, a swing angle drive pulley, an eccentric shaft and a swing angle drive slider, the swing angle drive pulley and the swing angle drive slider are both installed on the eccentric shaft, the swing angle drive slider is located in the swing angle seat cavity, the swing angle drive pulley and the swing angle drive motor are driven by a belt, and the swing angle drive motor and the eccentric shaft are both installed on the machine head frame.

[0014] Furthermore, the angle swing device also includes a angle swing positioning mechanism, which is installed on the angle swing seat and is located below the cavity of the angle swing seat.

[0015] Furthermore, the swing angle positioning mechanism includes a swing angle positioning base plate, a swing angle positioning cylinder and a swing angle positioning top plate, the swing angle positioning base plate is installed on the swing angle seat, and the swing angle positioning base plate is located below the swing angle seat cavity, the cylinder barrel of the swing angle positioning cylinder is installed on the swing angle positioning base plate, the piston rod of the swing angle positioning cylinder is connected to the swing angle positioning top plate, and the swing angle positioning top plate cooperates with the swing angle driving slider.

[0016] Compared with the prior art, the present invention has the following advantages: the head frame assembly is used to install the head assembly and can realize the angle, position adjustment and fixation of the head assembly. The rotation of the hollow shaft is controlled by the installed reduction motor, and the up and down swinging of the hollow shaft is controlled by the swing angle device to realize the adjustment of the head assembly. The balance arm can be used to maintain the balance of the hollow shaft, and the position of the hollow shaft can be fixed by the clamp device to ensure the stability of the operation of the head assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front structural view of the head frame assembly of an embodiment of the present invention.

[0018] Figure 2 It is a left-side structural schematic diagram of a headstock assembly according to an embodiment of the present invention.

[0019] Figure 3 It is a left-side structural schematic diagram of a balance arm device according to an embodiment of the present invention.

[0020] Figure 4 It is a left-side structural schematic diagram of the clamp device according to an embodiment of the present invention.

[0021] Figure 5 It is a left-side structural schematic diagram of a locking buckle according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the top structure of the locking buckle according to an embodiment of the present invention.

[0023] Figure 7 It is a left-side structural schematic diagram of the angle swing device according to an embodiment of the present invention.

[0024] Figure 8 1 is a schematic diagram of the top view of the swing angle driving mechanism according to an embodiment of the present invention.

[0025] Fig. 9 It is a left-side structural schematic diagram of a headstock assembly according to an embodiment of the present invention.

[0026] In the figure: head frame 1, self-aligning bearing 2, hollow shaft 3, balance arm device 4, clamp device 5, reduction motor 6, swing angle device 7, Balance arm 41, tension spring 42, Tightening screw 51, clamp body 52, locking buckle 53, locking cylinder 54, locking pin 55, round hole 56, waist hole 57, Swing angle seat 71, swing angle driving mechanism 72, swing angle positioning mechanism 73, Swing angle seat cavity 711, Swing angle drive motor 721, swing angle drive pulley 722, eccentric shaft 723, swing angle drive slider 724, Swing angle positioning bottom plate 731 , swing angle positioning oil cylinder 732 , swing angle positioning top plate 733 . DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0028] Example

[0029] See also Figures 1 to 9As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0030] The head frame assembly in this embodiment includes a head frame base 1, a self-aligning bearing 2, a hollow shaft 3, a balancing arm device 4, a clamp device 5, a reduction motor 6 and a swing angle device 7. The hollow shaft 3 is installed on the head frame base 1 through the self-aligning bearing 2, the reduction motor 6 is installed at one end of the hollow shaft 3, the swing angle device 7 is installed on the reduction motor 6, the balancing arm device 4 and the clamp device 5 are both mounted on the outside of the hollow shaft 3, the balancing arm device 4 is connected to the head frame base 1, and the clamp device 5 is installed on the head frame base 1.

[0031] The balancing arm device 4 in this embodiment includes a balancing arm 41 and a tension spring 42. The balancing arm 41 is mounted on and fixed outside the hollow shaft 3. One end of the tension spring 42 is connected to the balancing arm 41, and the other end of the tension spring 42 is connected to the machine head frame 1.

[0032] The clamp device 5 in this embodiment includes a tightening screw 51, a clamp body 52, a locking buckle 53 and a locking cylinder 54. The tightening screw 51 is installed on the machine head frame 1, and the clamp body 52 is sleeved on the outside of the hollow shaft 3. The lower end of the clamp body 52 is in contact with the tightening screw 51, and the upper end of the clamp body 52 is locked by the locking buckle 53 and the locking cylinder 54.

[0033] There are two locking buckles 53 in this embodiment, and the locking buckles 53 are arranged in a U-shaped structure. A circular hole 56 and a waist-shaped hole 57 are arranged on the locking buckle 53. A locking pin 55 is installed on the upper end of each of the two clamp bodies 52. The two locking pins 55 are respectively located in the circular hole 56 and the waist-shaped hole 57. The cylinder barrel of the locking cylinder 54 is installed in the locking buckle 53, and the piston rod of the locking cylinder 54 is abutted against the locking pin 55 located in the waist-shaped hole 57. An arc-shaped protrusion structure is arranged on the clamp body 52, and the arc-shaped protrusion structure is in contact with the tightening screw 51.

[0034] The swing angle device 7 in this embodiment includes a swing angle seat 71, a swing angle driving mechanism 72 and a swing angle positioning mechanism 73. The swing angle seat 71 is installed on the reduction motor 6, the swing angle driving mechanism 72 cooperates with the swing angle seat 71, the swing angle positioning mechanism 73 is installed on the swing angle seat 71, and the swing angle positioning mechanism 73 is located below the swing angle seat cavity 711.

[0035] The swing angle seat 71 in this embodiment is provided with a swing angle seat cavity 711, and the swing angle drive mechanism 72 includes a swing angle drive motor 721, a swing angle drive pulley 722, an eccentric shaft 723 and a swing angle drive slider 724, the swing angle drive pulley 722 and the swing angle drive slider 724 are both installed on the eccentric shaft 723, the swing angle drive slider 724 is located in the swing angle seat cavity 711, the swing angle drive pulley 722 and the swing angle drive motor 721 are driven by a belt, and the swing angle drive motor 721 and the eccentric shaft 723 are both installed on the head frame 1.

[0036] The swing angle positioning mechanism 73 in this embodiment includes a swing angle positioning base plate 731, a swing angle positioning cylinder 732 and a swing angle positioning top plate 733. The swing angle positioning base plate 731 is installed on the swing angle seat 71, and the swing angle positioning base plate 731 is located below the swing angle seat cavity 711. The cylinder barrel of the swing angle positioning cylinder 732 is installed on the swing angle positioning base plate 731. The piston rod of the swing angle positioning cylinder 732 is connected to the swing angle positioning top plate 733, and the swing angle positioning top plate 733 cooperates with the swing angle driving slider 724.

[0037] Specifically, the head frame assembly can adjust the position and angle of the head assembly when working. The head assembly is installed at the other end of the hollow shaft 3. The hollow shaft 3 is driven to rotate by the reduction motor 6, so that the angle of the head assembly can be adjusted along the rotation of the hollow shaft 3.

[0038] The swing angle driving pulley 722 is driven to rotate by the swing angle driving motor 721, and the eccentric shaft 723 is driven to rotate by the swing angle driving pulley 722, and the swing angle driving slider 724 is driven to make eccentric movement by the eccentric shaft 723, and at the same time, the swing angle driving slider 724 is made to slide in the swing angle seat cavity 711, and then the reduction motor 6 and the hollow shaft 3 are driven to swing and adjust on the head frame 1 through the swing angle seat 71. After the adjustment is completed, the swing angle driving motor 721 stops rotating, and the swing angle positioning top plate 733 is pressed tightly by the swing angle positioning cylinder 732, so that the swing angle positioning top plate 733 is in contact with the swing angle driving slider 724 to realize the positioning of the swing angle driving slider 724.

[0039] When adjusting the hollow shaft 3, the balancing arm device 4 can play a balancing role to prevent the hollow shaft 3 from losing balance due to the excessive weight of the head assembly. After the adjustment is completed, the position of the hollow shaft 3 is fixed by the clamp device 5, that is, the locking pin 55 located in the waist-shaped hole 57 is tightened by the locking cylinder 54 so that the two clamp bodies 52 are clamped on the outer wall of the hollow shaft 3. In the initial state, the two tightening screws 51 can be screwed according to the outer diameter of the hollow shaft 3 to adjust the distance between the two clamp bodies 52.

[0040] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A machine head frame assembly, comprising a machine head frame seat (1), a self-aligning bearing (2), a hollow shaft (3) and a reduction motor (6), wherein the hollow shaft (3) is mounted on the machine head frame seat (1) via the self-aligning bearing (2), and the reduction motor (6) is mounted on one end of the hollow shaft (3), characterized in that: It also includes a balancing arm device (4), a clamp device (5) and a swing angle device (7), wherein the swing angle device (7) is mounted on the reduction motor (6), the balancing arm device (4) and the clamp device (5) are both sleeved outside the hollow shaft (3), the balancing arm device (4) is connected to the machine head frame (1), and the clamp device (5) is mounted on the machine head frame (1).

2. The headstock assembly according to claim 1, characterized in that: The balancing arm device (4) comprises a balancing arm (41) and a tension spring (42); the balancing arm (41) is sleeved and fixed outside the hollow shaft (3); one end of the tension spring (42) is connected to the balancing arm (41); and the other end of the tension spring (42) is connected to the machine head frame (1).

3. The headstock assembly according to claim 1, characterized in that: The clamp device (5) comprises a tightening screw (51), a clamp body (52), a locking buckle (53) and a locking cylinder (54); the tightening screw (51) is mounted on the machine head frame (1); the clamp body (52) is sleeved outside the hollow shaft (3); the lower end of the clamp body (52) is in contact with the tightening screw (51); and the upper end of the clamp body (52) is locked by the locking buckle (53) and the locking cylinder (54).

4. The headstock assembly according to claim 3, characterized in that: The locking buckle (53) is arranged in a U-shaped structure.

5. The headstock assembly according to claim 3, characterized in that: The locking buckle (53) is provided with a circular hole (56) and a waist-shaped hole (57); a locking pin shaft (55) is respectively installed at the upper end of the two clamp bodies (52); the two locking pin shafts (55) are respectively located in the circular hole (56) and the waist-shaped hole (57); the cylinder barrel of the locking oil cylinder (54) is installed in the locking buckle (53); and the piston rod of the locking oil cylinder (54) abuts against the locking pin shaft (55) located in the waist-shaped hole (57).

6. The headstock assembly according to claim 3, characterized in that: The clamp body (52) is provided with an arc-shaped protruding structure, and the arc-shaped protruding structure is in contact with the tightening screw (51).

7. The headstock assembly according to claim 1, characterized in that: The swing angle device (7) comprises a swing angle seat (71) and a swing angle drive mechanism (72); the swing angle seat (71) is mounted on the reduction motor (6); and the swing angle drive mechanism (72) cooperates with the swing angle seat (71).

8. The headstock assembly according to claim 7, characterized in that: The swing angle seat (71) is provided with a swing angle seat cavity (711); the swing angle driving mechanism (72) comprises a swing angle driving motor (721), a swing angle driving pulley (722), an eccentric shaft (723) and a swing angle driving slider (724); the swing angle driving pulley (722) and the swing angle driving slider (724) are both mounted on the eccentric shaft (723); the swing angle driving slider (724) is located in the swing angle seat cavity (711); the swing angle driving pulley (722) and the swing angle driving motor (721) are driven by a belt; and the swing angle driving motor (721) and the eccentric shaft (723) are both mounted on the machine head frame (1).

9. The headstock assembly according to claim 7, characterized in that: The swing angle device (7) further comprises a swing angle positioning mechanism (73), wherein the swing angle positioning mechanism (73) is mounted on the swing angle seat (71), and the swing angle positioning mechanism (73) is located below the swing angle seat cavity (711).

10. The headstock assembly according to claim 9, characterized in that: The swing angle positioning mechanism (73) comprises a swing angle positioning base plate (731), a swing angle positioning oil cylinder (732) and a swing angle positioning top plate (733); the swing angle positioning base plate (731) is mounted on the swing angle seat (71), and the swing angle positioning base plate (731) is located below the swing angle seat cavity (711); the cylinder barrel of the swing angle positioning oil cylinder (732) is mounted on the swing angle positioning base plate (731); the piston rod of the swing angle positioning oil cylinder (732) is connected to the swing angle positioning top plate (733); and the swing angle positioning top plate (733) cooperates with the swing angle driving slider (724).

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