Novel adjustable ball head detection rod

Abstract

The utility model belongs to the technical field of spherical detection rods, and particularly relates to a novel adjustable ball head detection rod which comprises a mounting seat, a connecting column is arranged at the top of the mounting seat, a connecting groove is formed in the top of the connecting column, the connecting groove extends in the length direction of the connecting column, and the connecting groove is suitable for being externally connected with a knife handle main shaft. Wherein a sleeve is arranged in the connecting groove in a sleeved mode, a clamping ring is arranged on the sleeve, the clamping ring is arranged on the knife handle main shaft in a sleeved mode, and a clamping block suitable for abutting against the knife handle main shaft is arranged on the inner wall of the clamping ring, so that the knife handle main shafts of different sizes can be clamped and fixed through the arrangement of the clamping ring and the clamping block; therefore, the compatibility of the ball head detection rod is improved, and the cost expenditure of a factory on the ball head detection rod is reduced. Meanwhile, the adjusting rod and the nut are arranged in a matched mode, so that the clamping block can adjust the clamping force on the cutter handle main shaft according to needs, and the applicability and stability of the ball head detection rod are further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of spherical testing rod, specifically relates to a novel adjustable ball head testing rod. BACKGROUND

[0002] The main shaft testing rod is a tool commonly used in the field of machining and precision detection, and is used for precision measurement and calibration of workpieces.

[0003] In the prior art, when the motion accuracy of a five-axis linkage numerical control machine tool is detected, a high-precision ball head testing rod is usually required. However, since each set of five-axis linkage numerical control machine tools is equipped with a special ball head testing rod, and these testing rods must be replaced according to the different sizes of the tool shank of the main shaft of the machine tool, this results in a high cost of the factory on the ball head testing rod. In addition, due to the lack of compatibility, the ball head testing rod cannot be used universally. SUMMARY

[0004] Therefore, the utility model provides a novel adjustable ball head testing rod, which can be compatible with various sizes of tool shanks of the main shaft, so as to reduce the cost of the factory on the ball head testing rod and improve the universality of the ball head testing rod.

[0005] The utility model adopts the technical scheme as follows:

[0006] A novel adjustable ball head testing rod comprises a mounting seat, the top of the mounting seat is provided with a connecting column, the top of the connecting column is provided with a connecting groove, the connecting groove extends in the length direction of the connecting column, and the connecting groove is suitable for circumscribing the tool shank main shaft;

[0007] The inside of the connecting groove is sleeved with a sleeve pipe, a clamping ring is formed in the sleeve pipe, the clamping ring is sleeved on the tool shank main shaft, and the inner wall of the clamping ring is provided with a clamping block suitable for abutting against the tool shank main shaft.

[0008] As a preferred technical scheme, an adjusting rod is further included, the adjusting rod is connected with the clamping block through the inner wall of the clamping ring, and the surface of the adjusting rod is provided with threads.

[0009] Further, the cross section of the clamping block is circular, and the inner wall of the clamping ring is provided with a receiving opening matched with the clamping block.

[0010] Further, one end of the adjusting rod away from the clamping block is inserted into the connecting column, and the insertion part of the adjusting rod and the connecting column is provided with a nut.

[0011] Further, the top of the connecting column is further provided with an assembly groove, the assembly groove is distributed along the edge of the connecting groove, the assembly groove is communicated with the connecting groove, and the assembly groove is suitable for inserting the adjusting rod.

[0012] Further, the assembly groove extends along the length direction of the connecting groove, and the top of the assembly groove is provided with an opening.

[0013] Further, the bottom of the mounting seat is provided with a detection rod, which is a cylinder, and the detection rod is located on the same central axis as the connecting column.

[0014] Further, the bottom of the detection rod is provided with a detection ball head, which is fixedly connected with the detection rod.

[0015] In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are:

[0016] Through the setting of the clamping ring and the clamping block, different sizes of tool handle spindles can be clamped and fixed, thereby improving the compatibility of the ball head detection rod and reducing the cost expenditure of the factory on the ball head detection rod. At the same time, the cooperation of the adjusting rod and the nut enables the clamping block to adjust the clamping force on the tool handle spindle as needed, further improving the applicability and stability of the ball head detection rod.

[0017] Through the split setting of the sleeve and the connecting column, the operator can sleeve the connecting column on the sleeve after clamping the tool handle spindle with the sleeve, so that the movement process of each clamping block can be more intuitively observed, so as to judge whether the clamping force of the clamping block on the tool handle spindle is uniform, thereby making fine adjustment to ensure the concentricity of the ball head detection rod and the tool handle spindle. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be explained through examples and with reference to the drawings, wherein:

[0019] Figure 1 is the structural schematic view of the novel adjustable ball head detection rod provided by the utility model;

[0020] Figure 2 is the structural schematic view of the sleeve provided by the utility model;

[0021] Figure 3 is the structural schematic view of the connecting column provided by the utility model.

[0022] Mounting seat-1; detection rod-2; detection ball head-3; connecting column-4; connecting groove-5; tool handle spindle-6; sleeve-7; adjusting rod-8; nut-9; clamping block-10; clamping ring-11; assembly groove-12. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1

[0025] In existing technologies, high-precision ball end gauges are typically required when inspecting the motion accuracy of five-axis CNC machine tools. However, since each five-axis CNC machine tool is equipped with a dedicated ball end gauge, and these gauges must be replaced according to the different sizes of the machine tool spindle tool holders, this results in high costs for factories on ball end gauges. Furthermore, due to a lack of compatibility, ball end gauges are not universally applicable.

[0026] Therefore, in order to solve the above problems and achieve the functions of improving the compatibility of ball head detectors and reducing costs, this utility model discloses a novel adjustable ball head detector. (See attached document.) Figure 1 and Figure 2 The device includes a mounting base 1, a connecting post 4 at the top of the mounting base 1, a connecting groove 5 at the top of the connecting post 4, the connecting groove 5 extending along the length of the connecting post 4, and the connecting groove 5 being adapted to connect an external tool holder spindle 6, a sleeve 7 being fitted inside the connecting groove 5, a clamping ring 11 being fitted on the sleeve 7, the clamping ring 11 being fitted onto the tool holder spindle 6, and a clamping block 10 being provided on the inner wall of the clamping ring 11 to abut against the tool holder spindle 6.

[0027] In this embodiment, when connecting the ball-end inspection bar and the tool holder spindle 6, the user can first insert the tool holder spindle 6 into the connecting groove 5, and then wrap the tool holder spindle 6 in the sleeve 7 through the clamping ring 11. Subsequently, the clamping block 10 inside the clamping ring 11 abuts against the outer wall of the tool holder spindle 6, thereby fixing the tool holder spindle 6. In order to adjust the abutting force of the clamping block 10 against the tool holder spindle 6, this embodiment also includes an adjusting rod 8. The adjusting rod 8 passes through the inner wall of the clamping ring 11 and is connected to the clamping block 10. The user can rotate the adjusting rod 8 and use the transmission principle of the thread to push the clamping block 10 to move along the length direction of the adjusting rod 8, thereby changing the abutting force of the clamping block 10 against the tool holder spindle 6 to adapt to tool holder spindles 6 of different sizes, thus improving the compatibility of the ball-end inspection bar.

[0028] It is understandable that multiple clamping blocks 10 can be provided, and each clamping block 10 is connected to a corresponding adjusting rod 8, so that the tool holder spindle 6 can be clamped and positioned at multiple points through multiple clamping blocks 10.

[0029] The cross section of the clamping block 10 is circular, and the inner wall of the clamping ring 11 is provided with a receiving opening matched with the clamping block 10, which is also circular to ensure that the clamping block 10 can be stably received in the receiving opening and avoid shaking or falling off during adjustment. The inner diameter of the receiving opening is slightly larger than the outer diameter of the clamping block 10, so that the clamping block 10 can move smoothly in the receiving opening, and the length of the receiving opening is matched with the length of the clamping block 11, so that the entire clamping block 10 can be received in the receiving opening. Through this arrangement, the user can rotate the adjusting rod 8 to completely receive the clamping block 10 in the receiving opening before connecting the handle shaft 6, so that the inner wall of the clamping ring 11 remains flat, thereby avoiding the protruding clamping block 10 from blocking the entry of the handle shaft 6. After the handle shaft 6 completely enters the clamping ring 11, the user can again move the clamping block 10 out of the receiving opening through the adjusting rod 8.

[0030] Embodiment two

[0031] On the basis of embodiment one, in order to further improve the concentricity of the ball head probe and the handle shaft 6, and prevent the multiple clamping blocks 10 from moving out of sync during adjustment, causing uneven clamping force of the clamping blocks 10 on the handle shaft 6, the sleeve 7 in the present application can be removed from the connecting groove 5. When connecting the handle shaft 6, the user can first remove the sleeve 7 from the connecting groove 5, then sleeve the sleeve 7 on the handle shaft 6, and then rotate the adjusting rod 8 to move the clamping block 10, so that the clamping block 10 can abut against the handle shaft 6 for clamping. Compared with fixing the sleeve 7 inside the connecting groove 5, this operation has the advantage that the user can more intuitively observe the movement process of each clamping block 10, so as to judge whether the clamping force of the clamping block 10 on the handle shaft 6 is uniform, thereby making fine adjustments to ensure the concentricity of the ball head probe and the handle shaft 6. If the sleeve 7 is arranged inside the connecting groove 5, although the adjusting rod 8 can be rotated to move the clamping block 10, because the movement process of the clamping block 10 cannot be directly observed, the user cannot intuitively know whether the clamping force of the clamping block 10 on the handle shaft 6 is uniform, which may result in low concentricity of the ball head probe and the handle shaft 6.

[0032] In order to achieve the above scheme, referring to Figures 2-3 , one end of the adjusting rod 8 away from the clamping block 10 is inserted into the connecting column 4, and a nut 9 is arranged at the insertion position of the adjusting rod 8 and the connecting column 4. The top of the connecting column 4 is also provided with an assembly groove 12, which is distributed along the edge of the connecting groove 5 and communicates with the connecting groove 5. The assembly groove 12 is adapted to be inserted by the adjusting rod 8, and extends along the length direction of the connecting groove 5. The top of the assembly groove 12 is provided with an opening.

[0033] Specifically, after the sleeve 7 is removed and the shank spindle 6 is clamped in the sleeve 7, the user can invert the mounting base 1 so that the connecting groove 5 is directly opposite the sleeve 7, at this time, the opening of the assembly groove 12 is also directly opposite the adjusting rod 8, then the mounting base 1 is lowered so that the sleeve 7 is connected in the connecting groove 5, and at the same time, the adjusting rod 8 also penetrates into the assembly groove 12, finally, the user can fix the adjusting rod 8 on the connecting column 4 through the nut 9, and the installation of the sleeve 7 is completed. Through this arrangement, the user can remove the sleeve 7 from the connecting groove 5 at any time according to the needs, and adjust the connection state of the sleeve 7 and the shank spindle 6 after removal.

[0034] It should be noted that the number of assembly grooves 12 is consistent with the number of adjusting rods 8.

[0035] Example Three

[0036] On the basis of Example One and Example Two, the bottom of the mounting base 1 is provided with a detection rod 2, which is a cylinder, and the detection rod 2 is located on the same central axis as the connecting column 4, and the bottom of the detection rod 2 is provided with a detection ball head 3, which is fixedly connected with the detection rod 2.

[0037] After the connecting column 4 is connected with the shank spindle 6, since the detection rod 2 is located on the same central axis as the connecting column 4, the radial runout and axial runout of the shank spindle 6 can be detected through the detection rod 2, and the motion accuracy of the five-axis linkage numerical control machine tool is evaluated. The detection ball head 3 is an existing device, and its geometric center needs to coincide with the center of rotation of the machine tool spindle. After installation, the position of the detection rod is adjusted to ensure that the center of the ball head coincides with the spindle axis, so as to achieve the detection effect.

[0038] In summary, in combination with Example One to Example Three, the working steps of the novel adjustable ball head detection rod are as follows:

[0039] Firstly, the integrity and adaptability of each component of the ball head detection rod are checked. It is confirmed that the mounting base 1, the connecting column 4, the sleeve 7, the clamping ring 11, the clamping block 10 and the adjusting rod 8 are not deformed or damaged, the threaded cooperation between the nut 9 and the adjusting rod 8 is smooth, and the detection rod 2 and the detection ball head 3 are firmly connected and the central axes are consistent.

[0040] Secondly, according to the size of the shank spindle 6 of the machine tool to be detected, the initial position of the clamping block 10 is adjusted. The sleeve 7 is taken out of the connecting groove 5, the receiving opening of the inner wall of the clamping ring 11 is observed, all the clamping blocks 10 are completely received in the receiving opening by rotating the adjusting rod 8, so that the inner wall of the clamping ring 11 remains flat, avoiding hindering the insertion of the shank spindle 6.

[0041] Then, the sleeve 7 is sleeved on the tool holder spindle 6, and the tool holder spindle 6 is slowly pushed to the middle of the clamping ring 11. Each adjusting rod 8 is rotated in turn, the clamping blocks 10 are extended from the receiving openings through threaded transmission, and the outer wall of the clamping blocks 10 is tightly abutted against the surface of the tool holder spindle 6. During the process, the synchronization of the movement of each clamping block 10 needs to be observed to ensure that the clamping force is uniform, and eccentricity caused by single-point force is avoided.

[0042] Subsequently, the mounting seat 1 is inverted, the connecting groove 5 is aligned with the sleeve 7, and the mounting seat 1 is lowered until the sleeve 7 is completely embedded in the connecting groove 5, while ensuring that the adjusting rods 8 pass through the corresponding assembly grooves 12. The adjusting rods 8 are locked on the outside of the connecting column 4 with the nuts 9, the relative position of the sleeve 7 and the connecting column 4 is fixed, a stable connecting structure is formed. Then, the center of the detection ball head 3 is calibrated with the rotation center of the machine tool spindle. By manually rotating the tool holder spindle 6, the radial runout of the detection rod 2 is observed. If there is a deviation, the individual adjusting rods 8 are fine-tuned to adjust the abutting force of the clamping blocks 10, until the geometric center of the detection ball head 3 coincides with the spindle axis, and the detection accuracy is ensured.

[0043] During the detection process, the machine tool is started for five-axis linkage test, and the radial runout and axial movement data of the spindle are fed back in real time through the detection rod 2. During the process, the stability of the connection between the clamping blocks 10 and the tool holder spindle 6 is closely observed. If abnormal vibration is found, stop the machine to check the fastening state of the nuts 9 and the abutting condition of the clamping blocks 10, and continue the detection after adjustment.

[0044] Finally, after the detection is completed, the nuts 9 are loosened and the sleeve 7 is taken out, the adjusting rods 8 are rotated to retract the clamping blocks 10 into the receiving openings, and the tool holder spindle 6 is removed. The inner wall of the clamping ring 11 and the surface of the detection rod 2 are cleaned, the threads of the adjusting rods 8 are checked for wear, the movable parts are lubricated, and the ball head detection rod parts are stored for the next use.

[0045] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

[0046] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel adjustable ball-head detector, characterized in that, Includes a mounting base (1), the top of which is provided with a connecting post (4), the top of which is provided with a connecting groove (5), the connecting groove (5) extends in the length direction of the connecting post (4), and the connecting groove (5) is suitable for connecting an external tool holder spindle (6). The connecting groove (5) is fitted with a sleeve (7), and a clamping ring (11) is provided on the sleeve (7). The clamping ring (11) is fitted on the tool holder spindle (6), and a clamping block (10) suitable for contacting the tool holder spindle (6) is provided on the inner wall of the clamping ring (11).

2. The novel adjustable ball-head detector bar according to claim 1, characterized in that, It also includes an adjusting rod (8), which passes through the inner wall of the clamping ring (11) and is connected to the clamping block (10), wherein the surface of the adjusting rod (8) is provided with threads.

3. The novel adjustable ball-head detector bar according to claim 2, characterized in that, The clamping block (10) has a circular cross-section, and the inner wall of the clamping ring (11) has a storage opening that is adapted to the clamping block (10).

4. The novel adjustable ball-head detector bar according to claim 2, characterized in that, The end of the adjusting rod (8) away from the clamp (10) is inserted into the connecting post (4), and a nut (9) is provided at the insertion point of the adjusting rod (8) and the connecting post (4).

5. The novel adjustable ball-head detector bar according to claim 4, characterized in that, The top of the connecting column (4) is also provided with an assembly groove (12), which is distributed along the edge of the connecting groove (5) and is connected to the connecting groove (5). The assembly groove (12) is suitable for the adjustment rod (8) to pass through.

6. The novel adjustable ball-head detector bar according to claim 5, characterized in that, The assembly groove (12) extends along the length of the connecting groove (5), and the top of the assembly groove (12) has an opening.

7. The novel adjustable ball-head detector bar according to claim 1, characterized in that, The bottom of the mounting base (1) is provided with a detection rod (2), which is a cylinder, and the detection rod (2) and the connecting column (4) are located on the same central axis.

8. The novel adjustable ball-head detector bar according to claim 7, characterized in that, The bottom of the detection rod (2) is provided with a detection ball head (3), and the detection ball head (3) is fixedly connected to the detection rod (2).

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