Cutter assembly and hole machining equipment

Abstract

The utility model belongs to the technical field of machining, and discloses a cutter assembly and hole machining equipment, the cutter assembly comprises a cutter and a fixing piece, the cutter comprises a machining head and a cutter handle which are connected, and a positioning part is arranged on the cutter handle. The fixing piece comprises a mounting part and a clamping part, and the mounting piece is configured to be connected with a machining spindle of a machine tool; the clamping part comprises a plurality of elastic clamping blocks which are circumferentially distributed, one ends of the elastic clamping blocks are connected with the mounting part, the other ends of the elastic clamping blocks are used for clamping the knife handle, and the elastic clamping blocks can be matched with the positioning part to axially limit the knife handle. The positioning part is arranged on the cutter handle, so that the extension length of the cutter can be accurately controlled at a set value, and the cutter is clamped and fixed on a machining main shaft of a machine tool according to the set extension length, thereby ensuring that the cutter can fully avoid a qualified hole machined by a workpiece, effectively preventing the cutter from being broken due to overlong extension, and being simple in structural form and convenient to use. Operation is convenient, and production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a tool assembly and hole processing equipment. Background Art

[0002] In various machine tools, tools are usually used to process internal thread holes of various sizes on workpieces. It only needs to replace tools with different tool diameters. During the hole processing stage, there are certain requirements for the extension length of the tool.

[0003] For example, some workpieces include a body and a flange arranged around the body. When machining a threaded hole on the flange, it is necessary to clamp the tool on the tool chuck and control the tool extension length within a suitable range. On the one hand, the tool chuck can avoid the body of the workpiece to prevent the tool chuck from driving the tool downward to drill and touch the body. On the other hand, the tool cannot extend too long to prevent it from breaking during the drilling process due to excessive extension. In the prior art, when installing the tool, the length of the tool extending from the tool chuck is usually manually controlled. This method cannot accurately control the tool extension length within the set value, and cannot effectively prevent the tool from breaking due to excessive extension. Moreover, this method is inefficient and time-consuming, which seriously affects production efficiency. Utility Model Content

[0004] One purpose of the utility model is to provide a tool assembly that can accurately control the extension length of the tool within a set value, which can fully avoid the workpiece to process a hole of qualified quality and avoid damaging the workpiece, and at the same time can effectively prevent the tool from breaking due to excessive extension, is easy to operate, and can improve production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tool assembly, comprising:

[0007] The tool comprises a connected processing head and a tool handle, wherein the tool handle is provided with a positioning portion;

[0008] The fixing assembly includes a mounting member and a clamping portion, wherein the mounting member is configured to be connected to a machining spindle of a machine tool; the clamping portion includes a plurality of elastic clamping blocks distributed in a circumference, one end of the plurality of elastic clamping blocks is connected to the mounting member, and the other end is used to clamp the tool handle, and the elastic clamping blocks can cooperate with the positioning portion to axially position the tool handle.

[0009] Optionally, the positioning portion includes a stop boss protruding from the tool handle, and the stop boss can abut against the bottom surface of the elastic clamping block.

[0010] Optionally, the tool assembly further comprises a plurality of limiting rings, which are selectively sleeved on the tool handle and can abut against the stop boss and the elastic clamping block.

[0011] Optionally, the positioning portion includes a groove recessed on the tool handle; the elastic clamping block is provided with a protrusion, and the protrusion can be clamped in the groove.

[0012] Optionally, the inner wall surface of the groove and the outer wall surface of the protrusion are both arc-shaped.

[0013] Optionally, the tool handle comprises a first handle body and a second handle body which are detachably connected, an end of the first handle body away from the second handle body is connected to the processing head, and the positioning portion is arranged on the second handle body.

[0014] Optionally, at least two elastic sheets are provided on the first handle body, each of the elastic sheets comprises a connected cantilever and a hook, the interior of the second handle body is hollow, the cantilever can be passed through the second handle body, and the hook can be hooked on the end surface of the second handle body away from the first handle body; the second handle body is in contact with the end surface of the first handle body.

[0015] Optionally, the tool further comprises a neck portion connected between the processing head and the tool handle, the cross-sectional area of ​​the tool handle is larger than the maximum cross-sectional area of ​​the processing head, and the cross-sectional area of ​​the neck portion gradually decreases from the tool handle to the processing head.

[0016] Optionally, the knife is made of stainless steel.

[0017] Another object of the utility model is to provide a hole processing device, which can smoothly process and produce qualified holes on a workpiece and reduce the phenomenon of tool breakage.

[0018] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0019] A hole processing device comprises a machine tool and the above-mentioned tool assembly.

[0020] Beneficial effects of the utility model:

[0021] The tool assembly proposed by the utility model, when clamping the tool, extends the tool handle between multiple elastic clamping blocks, so that the multiple elastic clamping blocks clamp the tool handle under the action of elastic force, and the tool handle specifically extends to the position where the positioning part on it cooperates with the elastic clamping block, so as to quickly locate the installation position of the tool in the axial direction, so that the tool can be installed on the processing spindle of the machine tool with a set extension length. By setting the positioning part on the tool handle, the extension length of the tool can be accurately controlled at the set value, thereby ensuring that the tool can fully avoid the workpiece to process a qualified hole, and can effectively prevent the tool from breaking due to excessive extension. The positioning operation is convenient and reliable, which can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the tool structure of the tool assembly provided in the first embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the fixing member of the tool assembly provided in the first embodiment of the utility model;

[0024] Figure 3 yes Figure 1 A partial enlarged view of the middle A;

[0025] Figure 4 It is a schematic diagram of the tool structure of the tool assembly provided in the second embodiment of the utility model;

[0026] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0027] Figure 6 It is a schematic diagram of the tool structure of the tool assembly provided in the third embodiment of the utility model;

[0028] Figure 7 is an exploded view of a tool of a tool assembly provided in a third embodiment of the utility model;

[0029] Figure 8 yes Figure 7 A partial enlarged view of point C in the middle.

[0030] In the figure:

[0031] 1. tool; 11. processing head; 12. tool handle; 122. first handle body; 123. second handle body; 124. elastic sheet; 1241. cantilever; 1242. hook; 13. tool neck; 14. positioning part;

[0032] 2. Fixing member; 21. Mounting portion; 22. Clamping portion; 221. Elastic clamping block;

[0033] 3. Limiting ring. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] Embodiment 1

[0039] like Figures 1 to 3As shown, this embodiment provides a tool assembly, including a tool 1 and a fixing member 2. The tool 1 includes a connected processing head 11 and a tool handle 12, the processing head 11 can process and produce holes on a workpiece, and a positioning portion 14 is provided on the tool handle 12; the fixing member 2 includes a mounting portion 21 and a clamping portion 22, the mounting portion 21 is configured to be connected to the processing spindle of the machine tool, and the tool handle 12 is detachably mounted on the clamping portion 22. The clamping portion 22 includes a plurality of elastic clamping blocks 221 (such as 3 to 8, and 3 are exemplarily provided in this embodiment) distributed in a circumference, one end of the plurality of elastic clamping blocks 221 is connected to the mounting portion 21, and the other end is used to clamp the tool handle 12. When the tool 1 needs to be clamped, the end of the tool handle 12 with the positioning portion 14 is extended between the multiple elastic clamping blocks 221 until the positioning portion 14 on the tool handle 12 abuts against the bottom surface of the multiple elastic clamping blocks 221. At this time, the tool handle 12 is clamped by the multiple elastic clamping blocks 221 under the action of elastic force. It can be seen that the positioning portion 14 cooperates with the elastic clamping block 221 to quickly locate the installation position of the tool 1 in the axial direction, and the tool can no longer move axially, so that the tool 1 is installed on the processing spindle (not shown in the figure) of the machine tool with a set extension length. By setting the positioning portion 14 on the tool handle 12, the extension length of the tool 1 can be accurately controlled at the set value, thereby ensuring that the tool 1 can fully avoid the hole that is qualified for the workpiece processing, ensure the production quality of the hole, avoid damage to the workpiece, and effectively prevent the tool 1 from breaking due to excessive extension. The structure is simple, easy to operate, and can improve production efficiency.

[0040] Optionally, the fixing member 2 is an integrated structure, and its material can be high-speed steel, alloy tool steel or high-quality carbon structural steel, etc. The mounting portion 21 of the fixing member 2 can be clamped and fixed on the main shaft of the machine tool.

[0041] Alternatively, if Figure 1 and Figure 2 As shown, a stop boss can be provided on the tool handle 12 as the positioning portion 14. One end of the tool handle 12 provided with the stop boss is inserted between the multiple elastic clamping blocks 221 until the bottom surfaces of the multiple elastic clamping blocks 221 abut against the end surfaces of the stop boss. At this time, the tool handle 12 cannot be inserted further, and the multiple elastic clamping blocks 221 clamp the tool handle 12. The stop boss and the elastic clamping block 221 cooperate to axially position the tool handle 12 and prevent the tool 1 from moving axially, so that the tool 1 is clamped on the machining spindle of the machine tool with a set extension length, and the extension length of the tool 1 is accurately controlled, which is conducive to preventing the tool 1 from being broken due to excessive length.

[0042] Optionally, one or more stop convex shoulders may be provided along the circumference of the knife handle 12, and the multiple stop convex shoulders need to be provided in the same plane; in this embodiment, two stop convex shoulders are provided by way of example, and in other embodiments, multiple stop convex shoulders may be provided as required, which is not limited here. Alternatively, the stop convex shoulders may be provided around the circumference of the knife handle 12.

[0043] Alternatively, if Figures 1 to 3 As shown, the tool assembly also includes a plurality of limit rings 3, and the limit rings 3 can be selectively sleeved on the tool handle 12. Exemplarily, the workpiece to be processed includes a body and a flange arranged around the body, and the tool 1 is used to process a connecting hole (such as a threaded hole) at the flange position. The body heights of different workpieces are different, and the minimum extension length of the tool 1 is set to 27D (D is the diameter of the processing head 11), which is suitable for processing workpieces with the smallest body height. A stop boss is set at the corresponding position of the tool handle 12 according to this size. When processing a workpiece with a larger body height, if this extension length is used, the bottom of the clamping portion 22 may touch the body of the workpiece, thereby damaging the workpiece. At this time, one or more limit rings 3 (in this embodiment) can be sleeved on the tool handle 12 according to the required extension length of the tool 1. Figure 3 The limiting ring 3 is stopped on the stop boss. When the tool handle 12 is inserted between the multiple elastic clamping blocks 221, the uppermost limiting ring 3 can abut against the bottom surface of the elastic clamping block 221, thereby increasing the extension length of the tool 1, so that the clamping part 22 can fully avoid the workpiece to prevent damage to the workpiece, while ensuring that a connection hole of qualified quality is processed. By setting the limiting ring 3, the extension length of the tool 1 can be adjusted, so that the tool assembly can be used to process connection holes on workpieces of various specifications, and has a wide range of applications.

[0044] Optionally, the extended length of the tool 1 is controlled between 27D and 29D to prevent the tool 1 from being extended too long and breaking. When four limit rings 3 are installed, the extended length of the tool 1 is 29D.

[0045] For example, Figure 3 As shown, the outer diameter of the limit ring 3 is the same as the distance between the edges of the two stop bosses. The outer diameter of the limit ring 3 can also be appropriately increased or decreased as long as the limit ring 3 can abut against the stop boss and the elastic clamping block 221.

[0046] Optionally, a flexible cushion layer can be provided on the upper surface of the stop boss, the upper surface of the limit ring 3, and the lower surface of the limit ring 3. When the limit ring 3 is not required to be set, the elastic clamping block 221 abuts against the stop boss, and the flexible cushion layer on the upper surface of the stop boss can absorb the vibration during the hole processing process, avoid hard contact between the elastic clamping block 221 and the stop boss, and prevent the stop boss from breaking; when the limit ring 3 is set, the upper and lower surfaces of the limit ring 3 are both provided with a flexible cushion layer, which can not only prevent the elastic clamping block 221 from hard contact with the limit ring 3, but also increase the friction between adjacent limit rings 3 or between the limit ring 3 and the stop boss, avoid displacement of the limit ring 3, and ensure that the tool 1 can be accurately positioned.

[0047] Exemplarily, a silicone gasket is selected as the flexible cushion layer. In other embodiments, a cushion layer made of other materials such as plastic may be selected as needed, which is not limited here.

[0048] like Figure 1 As shown, the tool 1 also includes a neck portion 13 connected between the processing head 11 and the handle 12. The cross-sectional area of ​​the handle 12 is larger than the maximum cross-sectional area of ​​the processing head 11. The cross-sectional area of ​​the neck portion 13 gradually decreases from the handle 12 to the processing head 11, that is, the neck portion 13 is a truncated cone structure. The cross-sectional area of ​​the handle 12 is larger than the processing head 11, which can make the handle 12 have higher strength, improve the bending and fracture resistance of the tool 1, ensure the normal processing of the hole, and can cooperate with the machine; the cross-sectional area of ​​the neck portion 13 gradually decreases, avoiding a large stress concentration caused by a sudden change in the cross-sectional area of ​​the processing head 11, preventing fracture between the processing head 11 and the handle 12, and avoiding damage to the workpiece.

[0049] Exemplarily, the tool 1 is made of stainless steel, which has the advantages of high strength, strong corrosion resistance, and easy processing. The tool 1 can stably process qualified holes in combination with appropriate machine tool processing parameters.

[0050] In other embodiments, other materials that meet the strength requirements may be selected to make the tool 1 as needed, which is not limited here.

[0051] This embodiment also provides a hole processing device, including a machine tool and the above-mentioned tool assembly. The mounting portion 21 of the fixing member 2 is connected to the processing spindle of the machine tool, so that the tool assembly is installed on the machine tool, and the machine tool controls the tool assembly to process a hole (such as a threaded hole) on the workpiece, which is easy to operate and can smoothly process and produce a qualified hole on the workpiece, avoiding damage to the workpiece and reducing tool breakage.

[0052] The process of machining a hole on the flange of a workpiece by the hole machining device provided in this embodiment is as follows:

[0053] S1, determining the extension length of the tool 1 according to the height of the workpiece to be processed, and selectively setting a limit ring 3 on the tool handle 12 accordingly, and the limit ring 3 is placed on the stop boss;

[0054] S2, insert one end of the tool handle 12 provided with the stop boss between the multiple elastic clamping blocks 221 until the elastic clamping block 221 abuts against the stop boss (or the limit ring 3), at which time the elastic clamping block 221 clamps the tool handle 12, and the tool handle 12 is positioned at a suitable extension length;

[0055] S3, installing the mounting portion 21 on the machining spindle of the machine tool (for example, clamping and fixing it on the spindle), and controlling the machine tool to process a hole (for example, a threaded hole) on the workpiece.

[0056] Embodiment 2

[0057] Based on the same inventive concept as the first embodiment, this embodiment provides a tool assembly and a hole processing device. Figure 4 and Figure 5 As shown, the difference between this embodiment and the first embodiment is that the positioning portion 14 includes a groove recessed on the tool handle 12, and a protrusion (not shown in the figure) is provided on the elastic clamping block 221. When the tool handle 12 is inserted between multiple elastic clamping blocks 221, the protrusion can be clamped in the groove to axially position the installation position of the tool 1 so that the tool 1 can no longer move axially, thereby accurately controlling the extension length of the tool 1 to a set value, preventing the bottom of the clamping portion 22 from interfering with the workpiece, and preventing the tool 1 from breaking due to excessive extension, thereby ensuring smooth hole processing.

[0058] Optionally, the inner wall surface of the groove and the outer wall surface of the protrusion are both set to be arc-shaped, which can avoid stress concentration, and adopt an arc-shaped transition connection to facilitate the insertion and removal of the protrusion.

[0059] Embodiment 3

[0060] Based on the same inventive concept as the first embodiment, this embodiment provides a tool assembly and a hole processing device. Figures 6 to 8 As shown, the difference between this embodiment and the first and second embodiments is that the tool handle 12 includes a first handle body 122 and a second handle body 123 that are detachably connected, and one end of the first handle body 122 away from the second handle body 123 is connected to the processing head 11, and the positioning portion 14 is arranged on the second handle body 123. A plurality of second handle bodies 123 can be configured for the first handle body 122, and the positioning portions 14 on the plurality of second handle bodies 123 are arranged at different height positions. By replacing different second handle bodies 123, the extension length of the tool 1 can be controlled within a certain range, for example, the extension length of the tool 1 is controlled within the range of 27D to 29D. During specific processing, according to the required extension length of the tool 1, a suitable second handle body 123 is selected to be connected to the first handle body 122, and the second handle body 123 is inserted between a plurality of elastic clamping blocks 221 so that the tool handle 12 is clamped.

[0061] By providing the second handle body 123 of various specifications, the extension length of the tool 1 can be flexibly adjusted according to actual conditions to ensure normal processing of the hole, and the production of the tool 1 can be simplified to reduce production costs and labor.

[0062] Alternatively, if Figure 7 and Figure 8 As shown, at least two elastic sheets 124 (e.g., 2 to 4, 2 are exemplarily provided in this embodiment) are arranged on the first handle body 122 at intervals, and the elastic sheet 124 includes a connected cantilever 1241 and a hook 1242, and the cantilever 1241 is connected to the first handle body 122, and the interior of the second handle body 123 is hollow. After the second handle body 123 is selected according to the extension length of the tool 1, it can be arranged along the following lines: Figure 7 In the direction indicated by the middle arrow, the elastic sheet 124 is inserted into the second handle body 123, the cantilever 1241 can be inserted into the second handle body 123, the hook 1242 can pass through the second handle body 123, and hook the end face of the second handle body 123 away from the first handle body 122, so that the first handle body 122 and the second handle body 123 are connected and fixed, and the second handle body 123 is in contact with the end face of the first handle body 122 at this time; when the second handle body 123 needs to be replaced, the internal pressure hook 1242 causes the cantilever 1241 to be elastically deformed to release the hooking effect of the hook 1242, and the elastic sheet 124 is pulled out from the second handle body 123, so that the first handle body 122 and the second handle body 123 are separated. By providing the elastic sheet 124, the first handle body 122 and the second handle body 123 can be firmly connected and separated, the structure is simple, the operation is convenient, the replacement of the second handle body 123 is convenient, and the extension length of the tool 1 is flexibly adjusted.

[0063] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A tool assembly, characterized in that: include: A tool (1) comprises a connected processing head (11) and a tool handle (12), wherein the tool handle (12) is provided with a positioning portion (14); The fixing member (2) comprises a mounting portion (21) and a clamping portion (22), wherein the mounting portion (21) is configured to be connected to a machining spindle of a machine tool; the clamping portion (22) comprises a plurality of elastic clamping blocks (221) distributed in a circumferential manner, wherein one end of the plurality of elastic clamping blocks (221) is connected to the mounting portion (21), and the other end is used to clamp the tool handle (12), and the elastic clamping blocks (221) can cooperate with the positioning portion (14) to axially position the tool handle (12).

2. The tool assembly according to claim 1, characterized in that The positioning portion (14) comprises a stop boss protruding from the knife handle (12), and the stop boss can abut against the bottom surface of the elastic clamping block (221).

3. The tool assembly according to claim 2, characterized in that: The tool assembly further comprises a plurality of limiting rings (3), wherein the limiting rings (3) are selectively sleeved on the tool handle (12) and can abut against the stop boss and the elastic clamping block (221).

4. The tool assembly according to claim 1, characterized in that The positioning portion (14) comprises a groove recessed on the knife handle (12); the elastic clamping block (221) is provided with a protrusion, and the protrusion can be clamped in the groove.

5. The tool assembly according to claim 4, characterized in that The inner wall surface of the groove and the outer wall surface of the protrusion are both arc-shaped.

6. The tool assembly according to claim 1, characterized in that The tool handle (12) comprises a first handle body (122) and a second handle body (123) which are detachably connected, an end of the first handle body (122) away from the second handle body (123) is connected to the processing head (11), and the positioning portion (14) is arranged on the second handle body (123).

7. The tool assembly according to claim 6, characterized in that At least two elastic sheets (124) are arranged on the first handle body (122), each of the elastic sheets (124) comprises a connected cantilever (1241) and a hook (1242); the second handle body (123) is hollow inside, the cantilever (1241) can be inserted into the second handle body (123), and the hook (1242) can be hooked on the end surface of the second handle body (123) away from the first handle body (122); the second handle body (123) is in contact with the end surface of the first handle body (122).

8. The tool assembly according to any one of claims 1 to 7, characterized in that: The tool (1) further comprises a knife neck (13) connected between the processing head (11) and the knife handle (12), the cross-sectional area of ​​the knife handle (12) is greater than the maximum cross-sectional area of ​​the processing head (11), and the cross-sectional area of ​​the knife neck (13) gradually decreases from the knife handle (12) to the processing head (11).

9. The tool assembly according to any one of claims 1 to 7, characterized in that: The knife (1) is made of stainless steel.

10. A hole processing device, characterized in that: The invention comprises a machine tool and a tool assembly as claimed in any one of claims 1 to 9.

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