A tool holder V-shaped groove testing fixture

Abstract

The utility model discloses a handle V type groove testing fixture, including base, support block, stand, detection mechanism and HSK handle, support block vertical fixed in support block top, and symmetrically is provided with two, stand is fixed between two adjacent support blocks, and is located support block one side, detection mechanism sets up in stand top, and HSK handle is placed in the top between two adjacent support blocks. In the utility model with the detection mechanism in standard ball abuts V type groove, through " three points determine a circle " principle, can fastly calculate V type groove key size, compared with three coordinate measuring machine, greatly shorten detection time, and detection mechanism in horizontal and vertical setting's dial gauge, can obtain V type groove diameter and groove center to support block top surface height two key sizes simultaneously, realize " one -stop " detection, greatly reduce equipment purchase and maintenance cost, through the positioning cooperation of standard ball and limiting groove, and one line operator can directly read dial gauge data.

Description

Technical Field

[0001] This utility model relates to a tool holder inspection tool, specifically a tool holder V-groove inspection tool, and belongs to the technical field of tool holder inspection tools. Background Technology

[0002] In the field of modern machining, HSK toolholders, as a new type of high-precision and high-rigidity toolholder system, are widely used in CNC machine tools, aerospace parts processing, and other scenarios with stringent precision requirements due to their structural advantages of dual positioning with short conical surfaces and end faces. Among them, the HSK63 toolholder has become a core tooling component in industries such as automobile manufacturing and mold processing due to its strong adaptability and load-bearing capacity that meets mainstream machining needs. Its geometric dimensional accuracy directly determines the connection stability between the tool and the spindle, which in turn affects key quality indicators such as dimensional tolerances and surface roughness of the workpiece. The V-groove structure of the HSK63 toolholder is the core functional area for achieving precise matching between the toolholder and the spindle. Therefore, the dimensional inspection of the V-groove of the HSK63 toolholder is a key link in ensuring machining quality.

[0003] However, most existing toolholder inspection fixtures have various problems. For example, in the special inspection fixture for the V-groove width of CNC toolholders disclosed in announcement number CN220230371U, although the dial indicators are staggered and the measuring heads of the two dial indicators are set horizontally, the inspection process is simpler compared with the existing technology. However, in this technical solution and most of the current inspection fixtures, the current industry mainly relies on the coordinate measuring machine (CMM), a high-precision inspection device, for the inspection of the V-groove size of HSK63 toolholders. The CMM collects the three-dimensional coordinate points of the V-groove surface through contact or non-contact probes, and then calculates various dimensional parameters through software algorithms. Its inspection accuracy can reach the micron level, which can meet the accuracy inspection requirements of HSK63 toolholders.

[0004] In related technologies, coordinate measuring machines (CMMs), as precision metrology equipment, have high unit purchase costs. For small and medium-sized processing enterprises or workshop-level inspection scenarios, the purchase and maintenance costs far exceed their capacity. Moreover, when using a CMM to inspect the V-groove of an HSK63 tool holder, multiple processes are required, including "workpiece clamping and positioning → establishing a measurement coordinate system → setting the measurement path → performing coordinate acquisition → data processing and result output." Among these, clamping and positioning rely on special fixtures to ensure the stability of the tool holder's posture, and setting the measurement path requires professional operators to write programs based on the V-groove structure. Each inspection takes a long time. In a workshop mass production scenario, the daily output of HSK63 tool holders can reach hundreds or even thousands of pieces. The low inspection efficiency of the CMM cannot meet the workshop production rhythm of "instant inspection, rapid feedback, and timely adjustment of production parameters," which can easily lead to problems such as the accumulation of defective products and production process interruptions, seriously affecting production efficiency. Utility Model Content

[0005] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a tool holder V-groove inspection tool.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A tool holder V-groove inspection tool includes a base, a support block, a column, an inspection mechanism, and an HSK tool holder. The support block is vertically fixed to the top of the support block and two are symmetrically arranged. The column is fixed between two adjacent support blocks and is located on one side of the support block. The inspection mechanism is located on the top of the column. The HSK tool holder is held in place between the top of the two adjacent support blocks. The testing mechanism includes a support, a dial indicator, a limiting groove, and standard balls. The support is horizontally fixed to the top of the column. Multiple dial indicators are provided, and the multiple dial indicators are respectively horizontally and vertically arranged on one side and the top of the support. The limiting groove is located on the other side of the support. Multiple standard balls are respectively located at both ends and the center of the limiting groove and are connected to the dial indicators. The HSK tool holder is inserted into the limiting groove, and the standard balls abut against the V-groove of the HSK tool holder.

[0007] As a further improvement of this utility model: the limiting groove is provided with insertion grooves at both ends and the center, the standard ball is detachably connected in the insertion groove, and locking screws are provided on the side wall and top of the support, with one end of the locking screw abutting against the standard ball.

[0008] As a further embodiment of this utility model: the top of the support block is slidably connected to an abutment plate, the abutment plate is disposed opposite to the support seat, and a groove is provided on one side of the abutment plate, the shape of the groove being the same as the limiting groove, and the HSK tool holder is engaged between the limiting groove and the groove.

[0009] As a further improvement of this utility model, a rigid gasket is provided in both the groove of the abutment plate and the limiting groove.

[0010] As a further embodiment of this utility model: the top of the support block is provided with a sliding groove, and the bottom of the abutment plate is fixed with a locking block, which is slidably engaged in the sliding groove.

[0011] As a further improvement of this utility model: a spring is provided in the slide groove, one end of the spring abuts against the locking block, and the other end abuts against one side of the slide groove.

[0012] The beneficial effects of this utility model are: This invention utilizes a standard ball in the testing mechanism to abut against a V-groove. By applying the principle of "three points determining a circle," the key dimensions of the V-groove can be quickly calculated, significantly shortening the testing time compared to a coordinate measuring machine. Furthermore, the dial indicators, positioned horizontally and vertically in the testing mechanism, can simultaneously acquire two key dimensions: the diameter of the V-groove and the height from the groove center to the top surface of the support block. This enables "one-stop" testing, significantly reducing equipment procurement and maintenance costs. Through the positioning and coordination of the standard ball and the limiting groove, frontline operators can directly read the dial indicator data without requiring professional metrology qualifications, making it suitable for batch testing scenarios in workshops. The three-point positioning design of the standard ball within the limiting groove, combined with the precise readings of the dial indicator, can meet the accuracy testing requirements of the HSK63 tool holder. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the testing mechanism of this utility model; Figure 3 This is a schematic diagram of the support block and its connection structure of the present invention; Figure 4 This is a schematic diagram of the connection structure of the abutment plate of this utility model; In the diagram: 1. Base, 2. Support block, 3. Column, 4. Detection mechanism, 41. Support seat, 42. Dial indicator, 43. Limit groove, 44. Standard ball, 5. HSK tool holder, 6. Insertion groove, 7. Locking screw, 8. Slide groove, 9. Abutment plate, 10. Locking block, 11. Spring. Detailed Implementation

[0014] 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. Example 1

[0015] like Figures 1 to 4 As shown, a tool holder V-groove inspection tool includes a base 1, a support block 2, a column 3, an inspection mechanism 4, and an HSK tool holder 5. The support block 2 is vertically fixed on the top of the support block 2 and two are symmetrically arranged. The column 3 is fixed between two adjacent support blocks 2 and is located on one side of the support block 2. The inspection mechanism 4 is set on the top of the column 3. The HSK tool holder 5 is snapped into the top between two adjacent support blocks 2. The testing mechanism 4 includes a support 41, a dial indicator 42, a limiting groove 43, and standard balls 44. The support 41 is horizontally fixed to the top of the column 3. Multiple dial indicators 42 are provided, and the multiple dial indicators 42 are respectively horizontally and vertically arranged on one side and the top of the support 41. The limiting groove 43 is located on the other side of the support 41. Multiple standard balls 44 are respectively located at both ends and the center of the limiting groove 43 and are connected to the dial indicators 42. The HSK tool holder 5 is inserted into the limiting groove 43, and the standard balls 44 abut against the V-groove of the HSK tool holder 5.

[0016] In this invention, the standard ball 44 in the detection mechanism 4 abuts against the V-groove. By using the principle of "three points determine a circle", the key dimensions of the V-groove can be quickly calculated, which significantly shortens the detection time compared to a coordinate measuring machine. Furthermore, the dial indicator 42, which is set horizontally and vertically in the detection mechanism 4, can simultaneously obtain two key dimensions: the diameter of the V-groove and the height from the center of the groove to the top surface of the support block 2, achieving "one-stop" detection and significantly reducing equipment procurement and maintenance costs. Through the positioning cooperation between the standard ball 44 and the limiting groove 43, front-line operators can directly read the data from the dial indicator 42 without the need for professional metrology qualifications, making it suitable for batch detection scenarios in workshops. The three-point positioning design of the standard ball 44 in the limiting groove 43, combined with the precise reading of the dial indicator 42, can meet the accuracy detection requirements of the HSK63 tool holder. Example 2

[0017] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes: The limiting groove 43 is provided with insertion grooves 6 at both ends and the center. The standard ball 44 is detachably connected in the insertion groove 6. Locking screws 7 are provided on the side wall and top of the support 41. One end of the locking screw 7 abuts against the standard ball 44. When the standard ball 44 is worn due to long-term use, it can be replaced separately, reducing the maintenance cost of the inspection tool.

[0018] The top of the support block 2 is slidably connected to an abutment plate 9, which is opposite to the support seat 41. A groove is provided on one side of the abutment plate 9, and the shape of the groove is the same as that of the limiting groove 43. The HSK tool holder 5 is engaged between the limiting groove 43 and the groove. The bidirectional positioning structure can fix the HSK tool holder 5 from both sides, avoiding measurement deviation caused by tool holder offset during testing and improving positioning accuracy.

[0019] Hard shims are provided in the groove of the abutment plate 9 and the limiting groove 43. The hard shims can directly reduce the wear of the contact parts between the HSK tool holder 5 and the gauge, and extend the service life of the gauge; at the same time, they can prevent the tool holder surface from being scratched and protect the accuracy of the workpiece being measured.

[0020] The top of the support block 2 is provided with a sliding groove 8, and the bottom of the abutment plate 9 is fixed with a locking block 10. The locking block 10 slides and engages in the sliding groove 8, so that the movement trajectory of the abutment plate 9 is stable and controllable, ensuring consistent positioning.

[0021] A spring 11 is installed inside the slide groove 8. One end of the spring 11 abuts against the locking block 10, and the other end abuts against one side of the slide groove 8. The elastic force of the spring 11 enables the abutment plate 9 to firmly abut and lock the HSK tool holder 5.

[0022] When using this tool holder gauge, first place the HSK tool holder 5 on top of the support block 2 and lock the HSK tool holder 5 into the limiting groove 43; at this time, the abutment plate 9 slides on the support block 2 through the elastic force of the bottom locking block 10 and the spring 11 until it abuts against the HSK tool holder 5 and presses it tightly to achieve bidirectional positioning. At this time, the three standard balls 44 contact the V-groove to form three points. Using the principle of "three points determine a circle", the relative position change of the standard balls 44 and the V-groove is reflected by the pointer data of the dial indicator 42. The diameter of the V-groove and the height of the groove center from the top surface of the support block 2 can be calculated.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tool holder V-groove inspection fixture, comprising a base (1), a support block (2), a column (3), an inspection mechanism (4), and an HSK tool holder (5), characterized in that, The support block (2) is vertically fixed on the top of the support block (2) and there are two symmetrically arranged. The column (3) is fixed between two adjacent support blocks (2) and located on one side of the support block (2). The detection mechanism (4) is set on the top of the column (3). The HSK tool holder (5) is placed on the top between two adjacent support blocks (2). The testing mechanism (4) includes a support (41), a dial indicator (42), a limiting groove (43), and a standard ball (44). The support (41) is horizontally fixed to the top of the column (3). Multiple dial indicators (42) are provided, and the multiple dial indicators (42) are respectively horizontally and vertically arranged on one side and the top of the support (41). The limiting groove (43) is arranged on the other side of the support (41). Multiple standard balls (44) are respectively arranged at both ends and the center of the limiting groove (43) and connected to the dial indicator (42). The HSK tool holder (5) is inserted into the limiting groove (43), and the standard ball (44) abuts against the V-shaped groove of the HSK tool holder (5).

2. The tool holder V-groove inspection fixture according to claim 1, characterized in that: The limiting groove (43) is provided with insertion grooves (6) at both ends and the center. The standard ball (44) is detachably connected in the insertion groove (6). Locking screws (7) are provided on the side wall and top of the support (41). One end of the locking screw (7) abuts against the standard ball (44).

3. The tool holder V-groove inspection fixture according to claim 1, characterized in that: The top of the support block (2) is slidably connected to an abutment plate (9), which is opposite to the support seat (41) and has a groove on one side. The groove shape is the same as the limiting groove (43). The HSK tool holder (5) is engaged between the limiting groove (43) and the groove.

4. The tool holder V-groove inspection fixture according to claim 3, characterized in that: Hard gaskets are provided in the groove of the abutment plate (9) and the limiting groove (43).

5. A tool holder V-groove inspection fixture according to claim 3, characterized in that: The top of the support block (2) is provided with a sliding groove (8), and the bottom of the abutment plate (9) is fixed with a locking block (10), which is slidably engaged in the sliding groove (8).

6. A tool holder V-groove inspection fixture according to claim 5, characterized in that: A spring (11) is provided inside the slide groove (8). One end of the spring (11) abuts against the locking block (10), and the other end abuts against one side of the slide groove (8).

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