A multifunctional rotating tool holder

Abstract

The present invention provides a multifunctional rotating tool holder frame, including a vertical arm, a fixed disk and a tool holder disk; the fixed disk is fixed at the end of the vertical arm and the axis of the fixed disk is not parallel to the axis of the vertical arm; the tool holder disk rotates around the axis of the fixed disk and is axially fixed to the fixed disk, and the tool holder disk and the fixed disk are also provided with a locking structure for limiting the relative rotation of the two; a plurality of tool holder grooves are evenly arranged on the tool holder disk; and during the rotation of the tool holder disk around the fixed disk, each tool holder groove is coaxial with the vertical arm at one position. The present invention realizes the switching of the tool holder by rotating the tool holder disk, which is convenient for tool changing, and will not affect the stability and cutting accuracy of the tool holder due to repeated clamping; after all calibrations are performed once, there is no need for multiple calibrations, which improves work efficiency. The present invention makes it possible to rotate the tool holder disk itself, and the tool angle can be adjusted by rotation. Further, the tool rotation processing can be realized, which is conducive to adapting to diversified processing needs.

Description

Technical Field

[0001] The invention relates to the field of cutting tools, and in particular to a rotating cutting tool holder. Background Art

[0002] When cutting glass sheets, different cutting tools are required for different cutting requirements. The tool switching is usually achieved by replacing the tool holder. The replacement of the tool holder is generally complicated, involving positioning and clamping. After the tool and tool holder are replaced, they need to be re-calibrated and re-positioned, which is inefficient. At the same time, frequent replacement will affect the stability and cutting accuracy of the tool holder.

[0003] To solve this problem, some CNC machine tools are equipped with a rotating cutter disc, on which various cutting tools are mounted, and the cutting tools are switched by rotating the cutter disc to cut moving workpieces. However, the cutter disc itself is stationary during cutting, and can be used for the processing of rotating bodies such as shafts, but it is impossible to adjust the tool or use it for processing holes, rotary grinding, rotary cutting, and other processes that require the tool itself to move. Some machining centers with rotating cutter discs are equipped with automatic tool changers, which can realize automatic tool changing. Some machining equipment even equips each tool with power to realize automatic processing such as drilling. However, the tool changing structure of the machining center is complex. In order to ensure the accuracy after each tool change, the overall design accuracy requirements are very high, and the overall cost is very high, which is not suitable for application in simple machining scenarios. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a rotating tool holder frame, which solves the problem in the prior art that the tool holder is frequently replaced with low efficiency and affects stability and cutting accuracy.

[0005] According to an embodiment of the present invention, the present invention provides a rotary tool holder, comprising a vertical arm, a fixed disk and a tool holder disk;

[0006] The fixed plate is fixed to the end of the vertical arm and the axis of the fixed plate is not parallel to the axis of the vertical arm;

[0007] The knife seat disc rotates around the axis of the fixed disc and is axially fixed to the fixed disc. The knife seat disc and the fixed disc are also provided with a locking structure to limit the relative rotation of the two.

[0008] A plurality of knife seat grooves are evenly arranged on the knife seat disc; and during the rotation of the knife seat disc around the fixed disc, each knife seat groove is coaxial with the vertical arm at one position.

[0009] The technical principle of the present invention is: when the tool seat disk rotates around the fixed disk, the axial position of the tool seat groove relative to the vertical arm changes; at the same time, when the vertical arm rotates, the tool disk is driven to rotate by the fixed disk, and after the tool is installed in the tool seat groove, the tool can be changed by rotating the tool seat disk, and after the tool is changed, the processing involving changing the angle or rotation of the tool can be achieved by rotating the vertical arm.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the present invention realizes the switching of the tool holder by rotating the tool holder disc, which is convenient for tool change, and does not affect the stability and cutting accuracy of the tool holder due to repeated clamping; after all calibrations are completed at one time, multiple calibrations are not required, which improves work efficiency. The present invention makes it possible for the tool holder disc to rotate, and the tool angle can be adjusted by rotation, and further the tool rotation processing can be realized, which is conducive to adapting to diversified processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of an embodiment of the present invention.

[0012] Figure 2 for Figure 1 AA section view.

[0013] Figure 3 A cross-sectional view of one of the vertical arms and fixed plate structures.

[0014] Figure 4 It is a schematic diagram of the rotating ferrule structure.

[0015] Figure 5 Front view of the plate being assembled for the toolholder.

[0016] Figure 6 It is a partial cross-sectional view of the locating pin.

[0017] Figure 7 It is a cross-sectional view of the vertical arm and fixed plate structure in another embodiment.

[0018] In the above drawings: 1, vertical arm; 2, fixed plate; 3, rotating sleeve; 4, tool holder assembly plate; 5, positioning pin; 6, ball; 7, spacer; 21, annular groove; 22, positioning hole; 31, mounting cavity; 41, tool holder groove; 42, mounting protrusion; 43, top screw hole; 51, compression spring; 52, force retaining ring; 61, annular rolling groove. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-3As shown, the present invention proposes a multifunctional rotating tool holder frame, comprising a vertical arm 1, a fixed disk 2 and a tool holder disk; the fixed disk 2 is fixed at the end of the vertical arm 1 and the axis of the fixed disk 2 is not parallel to the axis of the vertical arm 1; the tool holder disk rotates around the axis of the fixed disk 2 and is axially fixed to the fixed disk 2, and the tool holder disk and the fixed disk 2 are also provided with a locking structure for limiting the relative rotation of the two; a plurality of tool holder grooves 41 are evenly arranged on the tool holder disk; and during the rotation of the tool holder disk around the fixed disk 2, each tool holder groove 41 is coaxial with the vertical arm 1 at one of its positions.

[0021] Generally, 2 to 6 tool holder slots 41 are provided on each tool holder disc, which can not only meet the quantity requirements of different tool holders installed on the same equipment, but also keep the overall installation space and processing space within an appropriate range. When designing, the angle between the tool holder slot 41 and the axis of the fixed disc 2 is the same as the angle between the axis of the fixed disc 2 and the vertical arm 1. By selecting a suitable distance, the position of the tool holder slot 41 can be obtained; or after the tool holder disc is designed, the position of the tool holder slot 41 can be determined directly by rotating the tool holder disc.

[0022] like Figure 4-5 As shown, in order to facilitate the installation of the tool holder in the tool holder groove 41 and the overall replacement of the tool holder groove 41, the tool holder disc includes a rotating sleeve 3 and a tool holder assembly disc 4; the rotating sleeve 3 is sleeved on the fixed disc 2 and rotates around the axis of the fixed disc 2 and is axially fixed to the fixed disc 2, and the tool holder assembly disc 4 is detachably connected to the rotating sleeve 3. When specifically connected, one end face of the rotating sleeve 3 is flush with one end face of the fixed disc 2, and the end face of the rotating sleeve 3 is provided with a screw hole for connection. The tool holder assembly disc 4 and the rotating sleeve 3 are detachably connected by bolts, which is convenient for the replacement or disassembly and maintenance of the tool holder.

[0023] Furthermore, the locking structure includes a positioning pin 5 and a positioning hole 22, which are respectively arranged radially on the rotating ferrule 3 and the fixed disk 2, and there are a plurality of positioning holes 22; when any of the tool holder slots 41 and the vertical arm 1 are coaxial, the positioning pin 5 is selected to be opposite to the positioning hole 22. In this embodiment, the locking between the rotating ferrule 3 and the fixed disk 2 is achieved by the cooperation of the pin and the hole, and the cooperation position of the positioning hole 22 and the positioning pin 5 corresponds to the coaxial position of the corresponding tool holder slot 41 and the vertical arm 1. This setting method is convenient for restriction and release, and occupies little space, and is suitable for the locking application of the rotating ferrule 3 and the fixed disk 2 here.

[0024] Further, such as Figure 6As shown, the locking structure also includes a compression spring 51 that applies pressure to the positioning pin 5 toward the fixed disk 2. The side of the fixed disk 2 is provided with an annular groove 21 coaxial with the fixed disk. One end of the positioning pin 5 extends out of the rotating sleeve 3, and the other end is located in the annular groove 21. The compression spring 51 is sleeved outside the positioning pin 5. The rotating sleeve 3 is provided with a mounting cavity 31 for accommodating the compression spring 51. The positioning pin 5 is provided with a force-bearing retaining ring 52; one end of the compression spring 51 contacts the force-bearing retaining ring 52, and the other end contacts the bottom of the mounting cavity 31; the positioning hole 22 is located in the annular groove 21. When locked, the positioning pin 5 is pressed into the positioning hole 22 by the compression spring 51; when unlocked, the positioning pin 5 is manually pulled out so that its end is located in the annular groove 21. After unlocking, the rotating sleeve 3 is rotated, and the end of the positioning pin 5 slides in the annular groove 21. When reaching the next positioning hole 22, it is automatically pressed in by the compression spring 51. At this time, the next tool is just coaxial with the rotating sleeve 3.

[0025] Furthermore, in order to facilitate the relative rotation between the rotating sleeve 3 and the fixed disk 2 when unlocked, the rotating sleeve 3 partially wraps the side surface of the fixed disk 2 and the end surface where the vertical arm 1 is located; there are also balls 6 between the rotating sleeve 3 and the fixed disk 2, and the fixed disk 2 and the rotating sleeve 3 are both provided with an annular rolling groove 61 for the rolling of the balls 6. The cooperation between the balls 6 and the annular rolling groove 61 not only facilitates the rotation between the rotating sleeve 3 and the fixed disk 2, but also provides certain axial and radial restrictions on the rotating sleeve 3 and the fixed disk 2.

[0026] Furthermore, a mounting protrusion 42 is provided on the end surface of the knife seat assembly plate 4, the knife seat groove 41 is located on the mounting protrusion 42, and a top screw hole 43 penetrating the protrusion is also provided on the inner wall of the knife seat groove 41. The mounting protrusion 42 provides the setting position of the knife seat groove 41, and at the same time, it is convenient to open the top screw hole 43 from the side wall of the knife seat groove 41 for fixing the knife seat.

[0027] Preferably, the angle between the axis of the fixed disk 2 and the axis of the vertical arm 1 is 30°-60°. The angle between the fixed disk 2 and the vertical arm 1 affects the installation space of the tool holder slot 41 on the fixed disk 2 and the radial space of the vertical arm 1. The angle within the range of 30°-60° is convenient for the installation of the tool holder slot 41.

[0028] like Figure 7 As shown, in another embodiment, a counterweight protrusion is provided on the vertical arm 1 along its radial direction, and the counterweight protrusion is located on the side of the fixed plate 2 away from the vertical arm 1. The vertical arm 1 itself is arranged to be rotatable, so that the tool angle can be adjusted. After the counterweight is set, the center of gravity of the fixed plate 2 and the counterweight protrusion as a whole is closer to the vertical arm 1, so that low-speed rotation processing, such as drilling, can be achieved without causing the vertical arm 1 to be damaged due to excessive centrifugal force.

[0029] Furthermore, the outer fixed sleeve of the vertical arm 1 is provided with a spacer sleeve 7, and bearings are provided at both ends of the spacer sleeve 7. The spacer sleeve 7 provides certain protection for the vertical arm 1 and improves its force bearing capacity to prevent it from deformation.

[0030] As described in the above scheme, the working principle of the present invention is: after setting the vertical arm 1 and the fixed disk 2, the tool holder is installed on the tool holder assembly disk 4, and then the tool holder mounting disk is connected to the rotating sleeve 3, and then the tool is calibrated uniformly; when the tool needs to be switched, the positioning pin 5 is first pulled out, and then the rotating sleeve 3 is rotated until the positioning pin 5 is automatically inserted into the next positioning hole 22; during the working process, the vertical arm 1 can drive the tool holder assembly disk 4 to rotate through the fixed disk 2, and then drive the tool to rotate around the axis of the vertical arm 1 to achieve the change of the tool angle or rotation processing with low speed requirements.

[0031] When the vertical arm 1 rotates, since the fixed disk 2 and the rotating sleeve 3 are not coaxially arranged with the vertical arm 1, the fixed disk 2 and the rotating sleeve 3 are mainly subjected to force on the end faces and the side faces, and the force in the direction of rotation between the two is very small, and the fixing ability of the positioning pin 5 is sufficient to complete the locking. The present invention cooperates with the fixed disk 2 and the rotating sleeve 3, and utilizes the different axes between the vertical arm 1 and the two. When the rotating sleeve 3 rotates relative to the fixed disk 2, the axial distance between the tool holder groove 41 on the tool holder assembly disk 4 and the vertical arm 1 changes and switches, thereby completing the tool change. After different tool holders are assembled in different tool holder grooves 41, the tool holder can be quickly switched without repeated calibration, which not only meets the multiple cutting requirements of different shapes, sizes and thicknesses, but also ensures the efficiency and stability of tool holder switching. The overall structure is not complicated, and it is economical and reliable.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A multifunctional rotating tool holder, characterized in that: It includes a vertical arm, a fixed plate and a knife holder plate; The fixed plate is fixed to the end of the vertical arm and the axis of the fixed plate is not parallel to the axis of the vertical arm; The knife seat disc rotates around the axis of the fixed disc and is axially fixed to the fixed disc. The knife seat disc and the fixed disc are also provided with a locking structure to limit the relative rotation of the two. A plurality of knife seat grooves are evenly arranged on the knife seat disc; and during the rotation of the knife seat disc around the fixed disc, each knife seat groove is coaxial with the vertical arm at one position.

2. A multifunctional rotary tool holder as claimed in claim 1, characterized in that: The tool holder disc comprises a rotating sleeve and a tool holder assembly disc; the rotating sleeve is sleeved on the fixed disc and rotates around the axis of the fixed disc and is axially fixed to the fixed disc, and the tool holder assembly disc is detachably connected to the rotating sleeve.

3. A multifunctional rotary tool holder as claimed in claim 2, characterized in that: The locking structure includes a locating pin and a locating hole, and the locating pin and the locating hole are respectively arranged radially on the rotating sleeve and the fixed disk, and there are a plurality of locating holes; when any of the tool holder grooves and the vertical arm are coaxial, the locating pin is selected to be opposite to the locating hole.

4. A multifunctional rotary tool holder as claimed in claim 3, characterized in that: The locking structure also includes a compression spring that applies pressure to the positioning pin in the direction of the fixed disk. The side of the fixed disk is provided with an annular groove coaxial with the fixed disk. One end of the positioning pin extends out of the rotating sleeve, and the other end is located in the annular groove. The compression spring is sleeved outside the positioning pin, and the rotating sleeve is provided with an installation cavity for accommodating the compression spring. The positioning pin is provided with a force-bearing retaining ring; one end of the compression spring is in contact with the force-bearing retaining ring, and the other end is in contact with the bottom of the installation cavity; the positioning hole is located in the annular groove.

5. The multifunctional rotary tool holder according to claim 2, characterized in that: The rotating sleeve partially wraps the side surface of the fixed disk and the end surface where the vertical arm is located; there are also balls between the rotating sleeve and the fixed disk, and the fixed disk and the rotating sleeve are both provided with annular rolling grooves for the balls to roll.

6. The multifunctional rotary tool holder according to claim 2, characterized in that: A mounting protrusion is arranged on the end surface of the knife seat assembly disk, the knife seat groove is located on the mounting protrusion, and a top screw hole penetrating the mounting protrusion is also arranged on the inner wall of the knife seat groove.

7. A multifunctional rotary tool holder according to any one of claims 1 to 5, characterized in that: The angle formed by the axis of the fixed plate and the axis of the vertical arm is 30°-60°.

8. The multifunctional rotary tool holder according to claim 7, characterized in that: A counterweight protrusion is provided on the vertical arm along its radial direction, and the counterweight protrusion is located on a side of the fixing plate away from the vertical arm.

9. The multifunctional rotary tool holder according to claim 8, characterized in that: The outer fixing sleeve of the vertical arm is provided with a spacer sleeve, and bearings are provided at both ends of the spacer sleeve.

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