A coaxiality calibration auxiliary installation device for reamers

Abstract

This utility model discloses a coaxiality calibration auxiliary installation device for reamers, comprising: a locking ring fixedly mounted on the lower end face of a spindle by bolts, with the center of the locking ring coaxial with the axis of the tapered hole of the spindle; turntables rotatably mounted on both ends of the outer surface of the locking ring; guide rods fixedly mounted on the lower ends of the outer surfaces of the two turntables; and a coaxiality positioning mechanism slidably mounted between the outer surfaces of the two guide rods. The coaxiality positioning mechanism can be vertically loaded with a reamer. Through the design of the coaxiality positioning mechanism, this application combines mechanical positioning, dynamic calibration, and rigid locking, transforming the reamer installation process from "relying on manual experience calibration" to "mechanical structure self-calibration," significantly improving coaxiality accuracy and installation efficiency, while reducing reliance on operator skills. It is suitable for high-precision batch processing scenarios.

Description

Technical Field

[0001] This utility model relates to the field of reamer installation technology, specifically to a coaxiality calibration auxiliary installation device for reamers. Background Technology

[0002] A reamer is a rotary cutting tool with one or more cutting teeth used to remove a thin layer of metal from the surface of a machined hole. Reamers are rotary finishing tools with straight or spiral cutting edges, used for enlarging or repairing holes. Because of the small cutting volume, the machining accuracy requirements of reamers are usually higher than those of drill bits. They can be operated manually or mounted on a drilling machine.

[0003] For example, the national authorized patent announcement number CN221808980U discloses a fixing structure for reamer installation, including a central connector, a reamer holder fixedly connected to one end of the central connector, a reamer body provided at one end of the reamer holder, arc-shaped connectors on both sides of the central connector, and deformation arc seats at one end of each of the two sets of arc-shaped connectors. A fixed connector is fixedly connected inside each deformation arc seat. This utility model, through the central connector, reamer holder, reamer body, arc-shaped connector, deformation arc seat, fixed connector, arc-shaped outer plate, and electric push rod, enables the equipment to perform fast and stable reamer installation operations. In actual use, the operator first installs the arc-shaped outer plate as a whole with the reamer unit. Then, the reamer holder and reamer body to be replaced can be connected to the two sets of arc-shaped connectors through the central connector at one end. At this time, the electric push rods on both sides of the arc-shaped outer plate are activated.

[0004] However, the aforementioned reamer mounting structure lacks a coaxiality guarantee mechanism when connected to the spindle. It uses an electric push rod to drive the arc-shaped structure for docking, which essentially relies on the initial installation accuracy of the arc-shaped connector and the deformable arc seat. It lacks active calibration capability. When there is a deviation between the reamer axis and the spindle tapered hole axis, the structure cannot compensate for the error through its own mechanical design. It requires secondary calibration with the help of external instruments (such as a coaxiality measuring instrument), which leads to a cumbersome operation process and low efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a coaxiality calibration auxiliary installation device for reamers, so as to solve the problems mentioned in the background art, such as the lack of coaxiality guarantee mechanism, low installation accuracy, cumbersome operation process, and low efficiency of the fixed structure for reamer installation when connected to the spindle.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A coaxiality calibration auxiliary installation device for a reamer includes: a locking ring fixedly mounted on the lower end face of a spindle by bolts, wherein the center of the locking ring is coaxial with the axis of the tapered hole of the spindle; turntables are rotatably mounted on both ends of the outer surface of the locking ring; guide rods are fixedly mounted on the lower ends of the outer surfaces of the two sets of turntables; a coaxiality positioning mechanism is slidably mounted between the outer surfaces of the two sets of guide rods; a reamer can be vertically filled in the coaxiality positioning mechanism, thereby enabling the reamer to slide precisely and insert into the tapered hole of the spindle through the coaxiality positioning mechanism on the outer surface of the guide rods, achieving high-precision coaxial installation of the reamer and the tapered hole of the spindle.

[0008] Preferably, both ends of the locking ring are threaded with handwheels. The threaded rod of the handwheel passes through the turntable and the handwheel is threadedly engaged with the locking ring. When the handwheel is screwed into the locking ring through the threaded rod, the handwheel can press against the end face of the turntable and lock the rotation of the turntable by friction, thereby fixing the angle position of the turntable.

[0009] Preferably, a stop plate is fixedly installed on one end of the outer surface of the locking ring. When the turntable drives the guide rod to rotate to a state perpendicular to the main shaft axis, the end face of the guide rod will touch the stop plate and be stopped and limited to prevent the turntable from rotating excessively.

[0010] Preferably, a stop ring is fixedly installed at the other end of the outer surface of the locking ring, which will contact and stop the guide rod when it rotates to a horizontal position via the turntable.

[0011] Preferably, the coaxiality positioning mechanism includes two sets of linear bearings, which are slidably mounted on the outer surfaces of two sets of guide rods, and a filling cylinder is fixedly installed between the outer surfaces of the two sets of linear bearings. The upper surface of the filling cylinder is provided with a positioning hole, so that the reamer can slide into the positioning hole from the upper surface of the filling cylinder and slide into the positioning hole through guide blocks fixedly installed on both sides.

[0012] Preferably, when the guide rod rotates to a state perpendicular to the main shaft axis via the turntable, it will drive the filling cylinder to be positioned synchronously, so that the central axis of the filling cylinder is precisely coaxial with the axis of the main shaft tapered hole.

[0013] Preferably, a wing bolt is threaded onto one end of the outer surface of the linear bearing. The threaded portion of the wing bolt can be rotated through into the linear bearing and contact the outer surface of the guide rod to lock the sliding of the linear bearing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the design of locking ring, stop plate, handwheel, turntable, guide rod and coaxiality positioning mechanism, when installing the reamer, first loosen the handwheel to release the lock on the turntable, and then let the turntable drive the guide rod to rotate and hang down naturally. When the guide rod rotates to a state perpendicular to the spindle axis, its end face will touch the stop plate and be stopped and limited. At this time, the handwheel can be tightened again to fix the position of the vertical guide rod, so that the coaxiality positioning mechanism is initially aligned with the axis of the spindle tapered hole. Then the reamer can be loaded into the coaxiality positioning mechanism. Since the coaxiality positioning mechanism is slidably installed on the outer surface of the guide rod, it can be finely adjusted up and down along the guide rod until the reamer is accurately inserted into the spindle tapered hole. After the reamer is inserted into the spindle tapered hole and the position is determined, the coaxiality positioning mechanism can be locked in the current position on the outer surface of the guide rod. Then the operator can operate the spindle to bite the reamer, and finally achieve high-precision coaxial installation of the reamer and the spindle tapered hole.

[0016] After the reamer is installed, the position lock of the coaxiality positioning mechanism can be released, and the guide rod can be pushed back to a horizontal position by the turntable. The horizontally pushed guide rod will then touch the outer surface of the stop ring and be stopped. The handwheel can then be tightened to lock the horizontally positioned guide rod. This effectively reduces the space occupied by the device when it is not in operation, facilitates the operation of other parts or the installation of other components near the machine tool, and the horizontal position makes it easier for staff to perform daily inspections and maintenance of the device.

[0017] 2. Through the design of the wing bolt, linear bearing, filling cylinder, and positioning hole, during the installation of the reamer, the guide rod can be rotated to a vertical position via the turntable, driving the linear bearing and filling cylinder, and simultaneously aligning the filling cylinder with the axis of the spindle tapered hole. Then, the vertical guide rod can be locked in position by turning the handwheel. Subsequently, as the reamer is slid into the filling cylinder, it will slide into the positioning hole along with the guide blocks fixed at both ends of its outer surface, achieving initial radial positioning. Then, the filling cylinder can be pushed upwards, and the two sets of linear bearings will drive the reamer axially along the guide rod for insertion. Inside the spindle tapered hole, the wing bolt can be rotated to make the threaded part contact the outer surface of the guide rod, thus locking the linear bearing and filling cylinder in place. Then, the operator can operate the spindle to bite the reamer, ultimately achieving high-precision coaxial installation of the reamer and the spindle tapered hole. This mechanism combines mechanical positioning, dynamic calibration, and rigid locking, transforming the reamer installation process from "relying on manual experience calibration" to "mechanical structure self-calibration," significantly improving coaxiality accuracy and installation efficiency, while reducing reliance on operator skills. It is suitable for high-precision batch processing scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the turntable of this utility model, which is stopped by a stop ring via a guide rod.

[0019] Figure 2This is a schematic diagram of the structure of the turntable of this utility model, which is stopped by the stop plate via the guide rod.

[0020] Figure 3 This is a schematic diagram of the coaxiality positioning mechanism of this utility model.

[0021] In the diagram: 1. Locking ring; 101. Stop ring; 102. Stop plate; 103. Handwheel; 104. Turntable; 105. Guide rod; 2. Coaxiality positioning mechanism; 201. Wing bolt; 202. Linear bearing; 203. Filling cylinder; 204. Positioning hole; 3. Reamer; 301. Guide block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 This embodiment provides the following technical solution:

[0024] like Figures 1-2 As shown, a coaxiality calibration auxiliary installation device for a reamer includes: a locking ring 1 fixedly installed on the lower end face of a spindle by bolts, with the center of the locking ring 1 being coaxial with the axis of the tapered hole of the spindle; turntables 104 are rotatably installed on both ends of the outer surface of the locking ring 1; guide rods 105 are fixedly installed on the lower ends of the outer surfaces of the two sets of turntables 104; a coaxiality positioning mechanism 2 is slidably installed between the outer surfaces of the two sets of guide rods 105; a reamer 3 can be vertically filled into the coaxiality positioning mechanism 2, so that the reamer 3 can be precisely inserted into the tapered hole of the spindle by sliding on the outer surface of the guide rods 105 through the coaxiality positioning mechanism 2, thereby achieving high-precision coaxial installation of the reamer 3 and the tapered hole of the spindle.

[0025] Both ends of the locking ring 1 are threadedly connected to handwheels 103. The threaded rod of the handwheel 103 passes through the turntable 104, and the handwheel 103 is threadedly engaged with the locking ring 1. When the handwheel 103 is screwed into the locking ring 1 through the threaded rod, it can press against the end face of the turntable 104, locking the rotation of the turntable 104 through friction, thereby fixing the angular position of the turntable 104. A stop plate 102 is fixedly installed on one end of the outer surface of the locking ring 1. When the turntable 104 drives the guide rod 105 to rotate to a state perpendicular to the main shaft axis, the end face of the guide rod 105 will touch the stop plate 102 and be stopped, preventing the turntable 104 from rotating excessively. A stop ring 101 is fixedly installed on the other end of the outer surface of the locking ring 1. The stop ring 101 is touched and stopped by the guide rod 105 when the turntable 104 rotates to a horizontal position.

[0026] Through the design of the locking ring 1, stop plate 102, handwheel 103, turntable 104, guide rod 105, and coaxiality positioning mechanism 2, when installing the reamer 3, first loosen the handwheel 103 to release the lock on the turntable 104. Then, allow the turntable 104 to drive the guide rod 105 to rotate and hang down naturally. When the guide rod 105 rotates to a position perpendicular to the main shaft axis, its end face will touch the stop plate 102 and be stopped and limited. At this time, the handwheel 103 can be tightened again to fix the position of the vertical guide rod 105, thereby making the coaxiality positioning mechanism 2 and the guide rod 105 more aligned. After the spindle taper hole axis is initially aligned, the reamer 3 can be loaded into the coaxiality positioning mechanism 2. Since the coaxiality positioning mechanism 2 is slidably installed on the outer surface of the guide rod 105, it can be finely adjusted up and down along the guide rod 105 until the reamer 3 is precisely inserted into the spindle taper hole. After the reamer 3 is inserted into the spindle taper hole and its position is determined, the coaxiality positioning mechanism 2 can be locked in the current position on the outer surface of the guide rod 105. Then, the operator can operate the spindle to bite the reamer 3, and finally achieve high-precision coaxial installation of the reamer 3 and the spindle taper hole.

[0027] After the reamer 3 is installed, the position lock of the coaxiality positioning mechanism 2 can be released, and the guide rod 105 can be pushed back to a horizontal position by the turntable 104. The guide rod 105, which has been pushed to a horizontal position, can then touch the outer surface of the stop ring 101 and be stopped. The handwheel 103 can then be tightened to lock the position of the horizontal guide rod 105. This can effectively reduce the space occupied by the device when it is not in operation, facilitate the operation of other parts or the installation of other components near the machine tool, and the horizontal position is more conducive to the daily inspection and maintenance of the device by the staff.

[0028] like Figure 3As shown, the coaxiality positioning mechanism 2 includes two sets of linear bearings 202. The two sets of linear bearings 202 are slidably installed on the outer surfaces of the two sets of guide rods 105 respectively, and a filling cylinder 203 is fixedly installed between the outer surfaces of the two sets of linear bearings 202. The upper surface of the filling cylinder 203 is provided with a positioning hole 204, so that the reamer 3 can slide into the positioning hole 204 through the upper surface of the filling cylinder 203 and through the guide blocks 301 fixedly installed on both sides.

[0029] When the guide rod 105 rotates to a position perpendicular to the main shaft axis via the turntable 104, it drives the filling cylinder 203 to be positioned synchronously, ensuring that the central axis of the filling cylinder 203 is precisely coaxial with the axis of the main shaft tapered hole. A wing bolt 201 is threaded onto one end of the outer surface of the linear bearing 202. The threaded portion of the wing bolt 201 can pass through into the linear bearing 202 and contact the outer surface of the guide rod 105 to lock the sliding of the linear bearing 202.

[0030] Through the design of the wing bolt 201, linear bearing 202, filling cylinder 203, and positioning hole 204, during the installation of the reamer 3, the guide rod 105 can drive the linear bearing 202 and the filling cylinder 203 to rotate to a vertical state via the turntable 104, simultaneously aligning the filling cylinder 203 with the axis of the spindle tapered hole. Then, the vertical guide rod 105 can be locked in position by rotating the handwheel 103. Subsequently, as the reamer 3 is slid into the filling cylinder 203, it will slide into the positioning hole 204 along with the guide blocks 301 fixed at both ends of its outer surface, achieving initial radial positioning. Finally, the filling cylinder 203 can be pushed upwards via the two sets of linear bearings 202. The guide rod 105 drives the reamer 3 to move axially and insert it into the spindle tapered hole. Then, the wing bolt 201 can be rotated so that the threaded part contacts the outer surface of the guide rod 105, thereby locking the linear bearing 202 and the filling cylinder 203. Then, the operator can operate the spindle to bite the reamer 3, and finally achieve high-precision coaxial installation of the reamer 3 and the spindle tapered hole. Moreover, this mechanism combines mechanical positioning, dynamic calibration and rigid locking, so that the installation process of the reamer 3 is transformed from "relying on manual experience calibration" to "mechanical structure self-calibration", which significantly improves coaxiality accuracy and installation efficiency, while reducing the dependence on operator skills. It is suitable for high-precision batch processing scenarios.

[0031] Based on the above technical solution, the working steps of this solution are summarized as follows: When installing the reamer 3, first loosen the handwheel 103 to release the lock on the turntable 104. Then, allow the turntable 104 to drive the guide rod 105 to rotate and hang down naturally. This allows the guide rod 105 to rotate through the turntable 104, driving the linear bearing 202 and the filling cylinder 203 to rotate and contact one end of the stop plate 102, maintaining a vertical state. At the same time, this aligns the filling cylinder 203 with the axis of the spindle tapered hole. Then, the vertical guide rod 105 can be locked in position by turning the handwheel 103. Subsequently, the reamer 3 can be slid into the filling cylinder 203, and together with the guide blocks 301 fixed at both ends of the outer surface, it will slide into the positioning hole 204 to achieve initial radial positioning. Then, the filling cylinder 203 can be pushed upwards along the guide through the two sets of linear bearings 202. Rod 105 drives the reamer 3 to move axially and insert it into the spindle tapered hole. Then, the wing bolt 201 can be rotated so that the threaded part contacts the outer surface of the guide rod 105, thereby locking the linear bearing 202 and the filling cylinder 203. Then, the operator can operate the spindle to bite the reamer 3, finally achieving high-precision coaxial installation of the reamer 3 and the spindle tapered hole. After the reamer 3 is installed, the wing bolt 201 can be loosened to release the position lock of the linear bearing 202, and the guide rod 105 can be pushed back to a horizontal position by the turntable 104. The horizontally pushed guide rod 105 can then contact the outer surface of the stop ring 101 and be stopped. Then, the handwheel 103 can be tightened to lock the horizontally positioned guide rod 105, which can effectively reduce the space occupied by the device in the non-working state.

[0032] In summary, this device combines mechanical positioning, dynamic calibration, and rigid locking, transforming the reamer 3 installation process from "relying on manual experience for calibration" to "mechanical structure self-calibration," significantly improving coaxiality accuracy and installation efficiency while reducing reliance on operator skills. It is suitable for high-precision batch processing scenarios.

[0033] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coaxiality calibration auxiliary mounting device for a reamer, characterized by, include: A locking ring (1) is fixedly installed on the lower end face of the spindle by bolts, and the center of the locking ring (1) is coaxial with the axis of the tapered hole of the spindle. Turntables (104) are rotatably installed on both ends of the outer surface of the locking ring (1), and guide rods (105) are fixedly installed on the lower ends of the outer surfaces of the two sets of turntables (104). A coaxiality positioning mechanism (2) is slidably installed between the outer surfaces of the two sets of guide rods (105). A reamer (3) can be filled vertically in the coaxiality positioning mechanism (2), so that the reamer (3) can slide precisely and be inserted into the tapered hole of the spindle on the outer surface of the guide rod (105) through the coaxiality positioning mechanism (2), thereby realizing the high-precision coaxial installation of the reamer (3) and the tapered hole of the spindle.

2. The coaxiality calibration auxiliary mounting device for a reamer according to claim 1, characterized in that: Both ends of the locking ring (1) are threaded with handwheels (103). The threaded rod of the handwheel (103) passes through the turntable (104) and the handwheel (103) is threadedly engaged with the locking ring (1). When the handwheel (103) is screwed into the locking ring (1) through the threaded rod, the handwheel (103) can press against the end face of the turntable (104) and lock the rotation of the turntable (104) by friction, thereby fixing the angle position of the turntable (104).

3. The coaxiality calibration auxiliary mounting device for a reamer according to claim 1, characterized in that: A stop plate (102) is fixedly installed on one end of the outer surface of the locking ring (1). When the turntable (104) drives the guide rod (105) to rotate to a state perpendicular to the main shaft axis, the end face of the guide rod (105) will touch the stop plate (102) and be stopped and limited to prevent the turntable (104) from rotating excessively.

4. The coaxiality calibration auxiliary mounting device for a reamer according to claim 1, characterized in that: A stop ring (101) is fixedly installed on the other end of the outer surface of the locking ring (1). The stop ring (101) will contact and stop the guide rod (105) when it rotates to a horizontal position through the turntable (104).

5. The coaxiality calibration auxiliary mounting device for a reamer according to claim 1, characterized in that: The coaxiality positioning mechanism (2) includes two sets of linear bearings (202). The two sets of linear bearings (202) are slidably installed on the outer surfaces of the two sets of guide rods (105). A filling cylinder (203) is fixedly installed between the outer surfaces of the two sets of linear bearings (202). A positioning hole (204) is provided on the upper surface of the filling cylinder (203), so that the reamer (3) can slide into the positioning hole (204) through the upper surface of the filling cylinder (203) and through the guide blocks (301) fixedly installed on both sides.

6. The coaxiality calibration auxiliary mounting device for a reamer according to claim 5, characterized in that: When the guide rod (105) is rotated to a state perpendicular to the main shaft axis by the turntable (104), it will drive the filling cylinder (203) to be positioned synchronously, so that the central axis of the filling cylinder (203) is precisely coaxial with the axis of the main shaft tapered hole.

7. The coaxiality calibration auxiliary mounting device for a reamer according to claim 5, characterized in that: A wing bolt (201) is threaded onto one end of the outer surface of the linear bearing (202). The threaded portion of the wing bolt (201) can be rotated through into the linear bearing (202) and press against the outer surface of the guide rod (105) to lock the sliding of the linear bearing (202).

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