CN217512920U - Machining tool and machining device - Google Patents

Abstract

The utility model relates to a processing cutter and machining device, processing cutter includes: the cutter handle is connected with a driving shaft for driving the cutter handle to move; the cutter bar is connected with the cutter handle to move along with the cutter handle under the driving of the cutter handle, the central axis of the cutter bar is overlapped with the central axis of the driving shaft, the cutter bar comprises a blade for processing a workpiece when the cutter bar moves, and the blade can move relative to the cutter handle to adjust the maximum distance of the blade relative to the central axis of the driving shaft; the adjusting piece is connected with the cutter bar, the cutter bar can rotate around the central axis of the adjusting piece relative to the cutter handle by operating the adjusting piece, and an interval exists between the central axis of the adjusting piece and the central axis of the driving shaft. The size of the processing cutter is more stable when the processing cutter processes a workpiece. The machining device comprises a machining cutter, and the machining cutter is more stable in size when machining a workpiece.

Description

Machining tool and machining device

Technical Field

The utility model relates to a machining technical field especially relates to processing cutter and machining device.

Background

A boring cutter is a machining tool, and is generally mounted on a driving shaft of a machine tool for boring, reaming, profiling, and the like. In the conventional technology, a cutter bar is usually arranged to be eccentric to a driving shaft of a machine tool, and the distance between a cutter blade and the driving shaft of the machine tool is adjusted by an eccentric adjustment method, so that the boring cutter can meet the processing requirements of different apertures.

However, in actual machining, the eccentric arrangement also brings a series of disadvantages, such as low machining efficiency of the tool, unstable size of the machined hole diameter, and inability to carry high-speed machining.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a machining tool and a machining apparatus, which address the problems of machining efficiency of the tool, stability of the machining dimension of the tool, and high-speed machining of the tool.

A machining tool, comprising:

the cutter handle is connected with a driving shaft for driving the cutter handle to move;

the cutter bar is connected with the cutter handle so as to move along with the cutter handle under the driving of the cutter handle, the central axis of the cutter bar is overlapped with the central axis of the driving shaft, the cutter bar comprises a blade for processing a workpiece when the cutter bar moves, and the blade can move relative to the cutter handle so as to adjust the maximum distance between the blade and the central axis of the driving shaft;

the adjusting piece is connected with the cutter rod, the cutter rod can rotate around the central axis of the adjusting piece relative to the cutter handle by operating the adjusting piece, and an interval exists between the central axis of the adjusting piece and the central axis of the driving shaft.

In one embodiment, the knife bar has a first position and a second position relative to the knife handle; when the cutter bar is located at the first position, the central axis of the cutter bar is coincident with the central axis of the driving shaft, and a first machining distance is reserved between the blade and the central axis of the driving shaft and is equal to the radius of a workpiece hole which can be machined by the machining cutter; when the cutter bar is located at the second position, a gap exists between the central axis of the cutter bar and the central axis of the driving shaft, and at the moment, a preset distance exists between the blade and the central axis of the driving shaft, wherein the preset distance is equal to the radius of a hole to be machined in a workpiece.

In one embodiment, the central axis of the driving shaft coincides with the central axis of the hole to be machined in the workpiece, and the blade is used for contacting with the hole wall of the hole to be machined in the workpiece when the cutter bar is in the second position.

In one embodiment, the processing tool further comprises a connecting piece, the connecting piece comprises a first connecting end and a second connecting end, the first connecting end is connected with the tool handle, the second connecting end is connected with the adjusting piece, the first connecting end and the second connecting end are connected with each other, and the connecting piece is used for driving the adjusting piece and the tool bar to rotate when the tool handle rotates.

In one embodiment, the processing tool further includes a first fixing member, the tool holder is provided with a first mounting hole extending along the axial direction, the first connecting end is disposed through the first mounting hole, a first penetrating hole extending along the radial direction and matching with the first fixing member is disposed on a hole wall of the first mounting hole, and the first fixing member penetrates through the first penetrating hole and is connected with the first connecting end to enable the connecting member, the adjusting member and the tool bar to be relatively fixed with the tool holder.

In one embodiment, a second mounting hole is axially formed in the adjusting piece, a step extending in the radial direction is formed in the hole wall of the second mounting hole, a butting portion extending in the radial direction is formed in the second connecting end, the second connecting end penetrates through the second mounting hole, the end face of one of the steps is in sliding fit with the end face of the butting portion, and the other end face of the step is in sliding fit with the end face of the tool holder.

In one embodiment, the radial dimension of the first fixing piece gradually increases from near to far from the central axis of the connecting piece along the radial direction of the connecting piece, a first matching hole matched with the first fixing piece in shape is formed in the first connecting end, the first fixing piece is matched with the hole wall of the first matching hole to enable the connecting piece to move along the axial direction, and the abutting portion is used for clamping the adjusting piece together with the tool shank when the connecting piece moves along the radial direction.

In one embodiment, the knife bar includes a bar body and a slide seat connected to the bar body, the bar body is connected to the adjusting member, the blade is disposed on the slide seat, a sliding groove is formed on the bar body, the slide seat is in sliding fit with a groove wall of the sliding groove, and the slide seat is used for adjusting a distance between the blade and the central axis of the driving shaft when sliding relative to the groove wall of the sliding groove.

In one embodiment, the cutter bar further comprises a fixing member, two opposite side walls of the sliding groove are provided with fixing holes for penetrating through the fixing member, and the fixing member is connected with the two opposite side walls of the sliding groove and used for enabling the two opposite side walls of the sliding groove to be close to and far away from each other so as to clamp the sliding seat.

In one embodiment, the machining tool further comprises a reducing sleeve, one end of the reducing sleeve is connected with the adjusting piece, the other end of the reducing sleeve is connected with the cutter bar, and the reducing sleeve is used for driving the cutter bar to rotate when the adjusting piece rotates.

A machining device, comprising:

a machining tool as described in any one of the above embodiments;

the driving assembly comprises a driving piece and a driving shaft connected with the driving piece, and the driving shaft is connected with the machining tool and used for driving the machining tool to rotate along the central axis of the driving shaft.

In the machining tool, the central axis of the cutter bar coincides with the central axis of the driving shaft. Therefore, the efficiency of machining the cutter and the stability of the machining size can be guaranteed. Meanwhile, the machining tool can also realize high-rotation-speed machining.

Further, there is the interval between the central axis of regulating part and the central axis of drive shaft, and the regulating part is for drive shaft and cutter arbor eccentric settings promptly to operating the regulating part can make the cutter arbor rotate around the central axis of regulating part relative handle of a knife. That is, the eccentric adjustment of the machining tool is still possible by the adjusting piece. With the arrangement, the blade can move relative to the cutter bar, so that when the adjusting piece adjusts the eccentricity of the cutter bar, the eccentricity of the cutter bar relative to the driving shaft can be replaced by the displacement of the blade relative to the cutter bar. Thereby ensuring that the cutter bar and the axial direction of the driving shaft are kept coincident so as to ensure the concentric processing of the processing cutter.

Drawings

FIG. 1 is a schematic axial view of a machining tool according to one embodiment;

FIG. 2 is a top view of the machining tool of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the machining tool of FIG. 1 illustrating adjustment of the machining aperture;

FIG. 5 is a cross-sectional view of a coupling member of the machining tool of FIG. 3;

FIG. 6 is a cross-sectional view of a shank of the machining tool shown in FIG. 3;

FIG. 7 is a cross-sectional view of an adjustment member of the machining tool of FIG. 3;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 9 is an enlarged view of a portion of FIG. 8 at C;

FIG. 10 is a cross-sectional view of a reducing sleeve in the machining tool shown in FIG. 3;

FIG. 11 is a schematic side view of a portion of a machining tool according to another embodiment;

fig. 12 is a partial enlarged view of fig. 1 at D.

Reference numerals: 10. processing a cutter; 100. a knife handle; 110. a first mounting hole; 111. a first through hole; 120. a first mark; 200. a cutter bar; 210. a rod body; 211. a limiting part; 212. a chute; 212a, a fixing connection hole; 213. a second mating hole; 220. a slide base; 221. a via hole; 230. a blade; 240. a fastening member; 300. an adjustment member; 310. a second mark; 320. a second mounting hole; 321. a step; 322. a third through hole; 400. a connecting member; 410. a first connection end; 411. a first mating hole; 420. a second connection end; 421. an abutting portion; 500. a reducing sleeve; 510. a third mounting hole; 511. a second through hole; 600. a first fixing member; 700. and a second fixing member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

An embodiment of the utility model provides a machining device is used for processing the work piece. The machining device includes a machining tool 10 and a driving assembly (not shown, the same applies to the following). The driving assembly includes a driving member (not shown, the same applies below) and a driving shaft (not shown, the same applies below) connected to the driving member. The driving shaft is connected with the processing tool 10 for driving the processing tool 10 to rotate along the central axis of the driving shaft. The workpiece can be held relatively stationary so that the machining tool 10 can cut the surface to be machined of the workpiece as it rotates relative to the workpiece to achieve the desired shape of the workpiece.

Referring to fig. 1 to 3, in one embodiment, a machining tool 10 includes a tool shank 100, a tool bar 200, and an adjusting member 300. Tool shank 100 is adapted to be coupled to a drive shaft that drives the movement of tool shank 100 to impart rotational drive movement to the drive shaft. The cutter bar 200 is connected with the cutter handle 100 to move along with the cutter handle 100 under the driving of the cutter handle 100, namely, the cutter bar 200 can synchronously rotate along with the driving shaft under the driving action of the driving shaft.

The central axis of the knife bar 200 coincides with the central axis of the drive shaft. The tool bar 200 includes a blade 230 for machining a workpiece while the tool bar 200 is in motion. Blade 230 can be moved relative to tool shank 100 to adjust the maximum distance of blade 230 relative to the central axis of the drive shaft. The adjusting member 300 is connected to the tool bar 200, and the tool bar 200 can rotate relative to the tool holder 100 around the central axis of the adjusting member 300 by operating the adjusting member 300, and the central axis of the adjusting member 300 is spaced from the central axis of the driving shaft. The central axis of the tool holder 200 is indicated by reference Q in fig. 3; the central axis of the drive shaft is referred to by reference O in fig. 3.

In the machining tool 10, the center axis of the cutter bar 200 coincides with the center axis of the drive shaft, and the cutter bar 200 and the drive shaft can concentrically rotate during machining. Therefore, the phenomenon that the machining size is unstable due to uneven stress when the machining tool 10 rotates due to the eccentric arrangement of the cutter bar 200 and the driving shaft when the machining tool 10 machines a boring hole can be avoided. That is, by setting the center axis of the cutter bar 200 to coincide with the center axis of the drive shaft, the machining efficiency and the machining dimension stability of the machining tool 10 can be ensured. Meanwhile, the machining tool 10 is provided with the cutter bar 200 and the drive shaft to concentrically rotate during machining, as opposed to the cutter bar 200 and the drive shaft being eccentrically provided, so that high-speed machining by the machining tool 10 can be realized. It will be appreciated that a higher rotational speed of the eccentrically disposed machining tool 10 will tend to result in larger errors in the machined dimensions.

Further, there is a gap between the central axis of the adjusting member 300 and the central axis of the driving shaft, that is, the adjusting member 300 is eccentrically disposed with respect to the driving shaft and the tool bar 200, and the tool bar 200 can be rotated with respect to the tool holder 100 about the central axis of the adjusting member 300 by operating the adjusting member 300. That is, the machining tool 10 can be eccentrically adjusted by the adjuster 300. It should be appreciated that when the machining tool 10 is eccentrically adjusted by the adjustment member, the machining dimension of the machining tool 10 is adjusted with higher accuracy. Also, the blade 230 is movable relative to the knife bar 200. Then, in combination with the eccentric adjustment manner of the adjustment member 300 for the machining tool 10, when the machining dimension of the machining tool 10 needs to be adjusted, the adjustment member 300 may be used to perform eccentric adjustment to determine a higher-precision adjustment value, and then the higher-precision adjustment value is replaced by the displacement of the blade 230 relative to the tool holder 100, and finally the adjustment member 300 is operated to reset the tool bar 200 to be concentric with the driving shaft. In this way, the concentricity of the cutter bar 200 with the drive shaft is ensured with the dimensional adjustment accuracy of the machining cutter 10 ensured. Therefore, the workpiece machined by the machining tool 10 is high in dimensional accuracy and stable in dimension.

Specifically, please refer to the schematic diagram shown in fig. 4. The reference O in fig. 4 is the central axis of the drive shaft; the marks Q1 and Q2 respectively indicate two different positions of the central axis of the tool bar 200, and the mark Q1 coincides with the mark O; reference P is the central axis of the adjuster 300; m, M1, K, and K1 respectively represent four different positions of the blade 230. There is a gap OP between the central axis of the adjuster 300 and the central axis of the drive shaft. Therefore, when the adjustment member 300 is manipulated to rotate the knife bar 200 eccentrically and the center axis of the knife bar 200 moves from Q1 to Q2, the blade 230 moves from mark M to mark K. At this time, the distance of the blade 230 from the central axis of the drive shaft is passively switched from OM to OK by the rotation of the arbor 20. That is, the size of the aperture of the workpiece that can be processed by the processing tool 10 is switched from OM to OK. The absolute value of the difference between OM and OK is defined as the first eccentricity adjustment. It will be appreciated that the distance of the blade 230 from the central axis of the drive shaft is varied by eccentric rotation, as opposed to by directly moving the position of the blade 230 to vary the distance of the blade 230 from the central axis of the drive shaft, in which case the distance of the blade 230 from the central axis of the drive shaft is relatively small due to the wide range of angular rotation of the adjustment member 300. Thus, the eccentric adjustment mode has higher precision.

Referring to fig. 4, in the above embodiment, further, the hole with O as the center and OV as the radius (hereinafter referred to as circle V) represents the existing hole on the workpiece to be processed. To finish bore the hole, the machining tool 10 may first be inserted into the hole. Since blade 230 can be moved relative to handle 100 to adjust the maximum distance of blade 230 relative to the central axis of the drive shaft. Then at this point the blade 230 may be actively moved directly from the position of marker K to the position of marker K1. In this manner, the size of the processing hole diameter of the blade 230 is changed from OK to OK 1. It will be appreciated that K1 lies on circle V. In other words, the blade 230 in the K1 position can be brought into contact with the surface to be machined of the workpiece. By directly contacting the blade 230 to the surface of the workpiece to be machined, the blade 230 can be quickly positioned on the circle V.

It can be seen that, in the above embodiment, after the tool bar 200 moves from the mark Q1 to the mark Q2, the operating blade 230 moves from the mark K to the mark K1, i.e., the blade 230 is moved into contact with the surface to be processed of the workpiece. Subsequently, the machining tool 10 is retracted out of the hole, and the tool bar 200 is moved from the mark Q2 to the mark Q1. At this time, the blade 230 is passively moved to the mark M1 by the mark K1 with the eccentric adjustment of the adjusting member 300. At this time, the size of the workpiece aperture that can be processed by the processing tool 10 is passively switched from OK1 to OM 1. The absolute value of the difference between OK1 and OM1 is defined as the second eccentricity adjustment. Thereby completing the adjustment of the machining bore diameter size of the machining tool 10. Referring to fig. 4, it can be understood that a circle with a center of O and a radius of OM1 is a hole diameter that the machining tool 10 can actually process.

In the above embodiment, it should be noted that the size difference between OM and OK is formed by the adjusting piece 300 moving the knife bar 200 from Q1 to Q2; and the size difference between OK1 and OM1 is formed by the adjuster 300 moving the knife bar 200 from Q2 to Q1. That is, the first eccentricity adjustment amount is formed by the movement of the knife bar 200 from Q1 to Q2, the second eccentricity adjustment amount is formed by the movement of the knife bar 200 from Q2 back to Q1, and the movement of the knife bar 200 between Q1 and Q2 is formed by the rotation of the adjusting piece 300 with the central axis P as the rotation axis, it can be inferred that the first eccentricity adjustment amount is equal to the second eccentricity adjustment amount.

It is understood that, in the above-described machining-size adjusting process, the adjusting member 300 has two rotation processes in total. The eccentric rotation process of one of the two changes the machining size of the machining tool 10, namely, a first eccentric adjustment amount; another eccentric rotation process is a reset of the aforementioned rotation process, which also changes the machining dimension of the machining tool 10, i.e., a second eccentric adjustment amount. However, the rotation process is reset to the rotation process, and the first eccentric adjustment amount is equal to the second eccentric adjustment amount. Therefore, in the size adjustment process of the overall machining tool 10, the eccentric adjustment process of the adjusting piece 300 does not cause a change in the machining size of the machining tool 10. The dimensional change of the machining tool 10 results from the movement of the blade 230 relative to the shank 100, i.e., the displacement of the blade 230 relative to the shank 100 replaces the higher precision adjustment in the eccentric adjustment. It will be appreciated that the substitution is only a numerical source, i.e. the amount of displacement by which the blade 230 is moved relative to the tool shank 100 can be maintained with a degree of precision comparable to the amount of adjustment in the eccentric adjustment. Moreover, on the basis, the cutter bar 200 and the driving shaft can be concentric when the machining cutter 10 is machined, so that the stability of the machining size of the machining cutter 10 can be improved, and the machining cutter 10 can realize high-rotation-speed machining conveniently. And the blade 230 is in contact with the surface to be processed of the workpiece when in the position K1, when the blade 230 in the position M1 is used for boring, the second eccentric adjustment amount is the aperture difference of the workpiece before and after processing. In this way, the second eccentric adjustment amount can be controlled by controlling the first eccentric adjustment amount through the adjusting member 300, that is, the machining size of the machining tool 10 can be controlled by controlling the adjusting member 300.

With continued reference to fig. 4, in other words, in one embodiment, the tool bar 200 has a first position and a second position relative to the tool shank 100. The operating of the adjuster 300 can move the knife bar 200 between the first and second positions.

When the knife bar 200 is in the first position, the centre axis of the knife bar 200 coincides with the centre axis of the drive shaft. That is, when the tool bar 200 is in the first position, the tool bar 200 central axis is Q1. There is now a first machining distance between the blade 230 and the central axis of the drive shaft. The first machining distance is equal to the radius at which the machining tool 10 can machine the workpiece hole. In other words, when the central axis of the tool bar 200 coincides with the central axis of the drive shaft, there is a first machining distance between the blade 230 and the central axis of the drive shaft. The first processing distance is indicated by reference OM or OM1 in fig. 4.

When the cutter bar 200 is in the second position, there is a spacing between the central axis of the cutter bar 200 and the central axis of the drive shaft. That is, when the tool holder 200 is in the second position, the tool holder 200 central axis is Q2. The blade 230 is now at a predetermined distance from the central axis of the drive shaft. The predetermined distance is equal to the radius of the hole to be machined in the workpiece, see reference number OK1 in fig. 4. When the knife bar 200 is in the second position, the knife blade 230 also has a second machining distance relative to the central axis of the drive shaft. The second processing distance is indicated by the reference numeral OK in fig. 4. When the tool bar 200 rotates about the central axis of the adjusting member 300, the blade 230 rotates, so that the first machining distance of the blade 230 with respect to the central axis of the driving shaft is changed into the second machining distance during the rotation. It will be appreciated that the blade 230 is movable relative to the central axis of the drive shaft to a predetermined distance and a second machining distance relative to the central axis of the drive shaft, i.e., the blade 230 is movable from K to K1. The absolute value of the difference between the first machining distance and the second machining distance is the amount of cutting of the workpiece by the machining tool 10.

The absolute value of the difference between the first machining distance and the second machining distance is a first eccentric adjustment amount. It is understood that the cutting amount is a difference between the hole diameters of the workpiece before and after machining, and is the second eccentric adjustment amount.

Since blade 230 is movable relative to handle 100, when knife bar 200 is in the second position, the blade can be moved such that the distance between blade 230 in the second position and the central axis of the drive shaft is a predetermined distance. Referring to fig. 4, the blade is also actively moved from K to K1. The predetermined distance is equal to the radius of the hole to be machined in the workpiece, i.e., OK1 in fig. 4. Specifically, the distance between the blade 230 and the central axis of the drive shaft can be a predetermined distance by causing the central axis of the drive shaft to coincide with the central axis of the hole to be machined in the workpiece and causing the blade 230 in the second position to contact the surface to be machined of the workpiece. That is, the blade 230 in the second position can be brought into contact with the surface to be processed of the workpiece by moving the blade 230. It is understood that the cutter bar 200 may be located at the second position by setting a reference surface, etc. the cutter blade 230 may have a predetermined distance from the central axis of the driving shaft, and will not be described herein.

For convenience of explanation, please refer to fig. 4 again, and the circle V with a radius of 25mm and the expected hole to be processed with a radius of 30mm is taken as an example for explanation. It will be appreciated that the reference O still refers to the central axis of the drive shaft; the marks Q1 and Q2 respectively indicate two different positions of the central axis of the tool bar 200, and the mark Q1 coincides with the mark O; reference P is the central axis of the adjuster 300; m, M1, K, and K1 represent four different positions of the blade 230, respectively.

First, the machining tool 10 is inserted into the hole such that the central axis of the drive shaft coincides with the central axis of the hole to be machined in the workpiece, and the adjustment member 300 is operated to move the cutter bar 200 from the first position to the second position, that is, to move the central axis of the cutter bar 200 from Q1 to Q2. And the first eccentric adjustment amount at this time is 5mm, that is, the absolute value of the difference between OM and OK is 5 mm. Subsequently, the blade 230 is moved to bring the blade 230 into contact with the surface to be processed of the workpiece so that the blade 230 has a preset distance from the central axis of the driving shaft. The insert 230 is then secured and the machining tool 10 is withdrawn from the hole. Finally, the adjusting member 300 is operated to move the cutter bar 200 from the second position to the first position, wherein the second eccentric adjustment amount is equal to the first eccentric adjustment amount, and the second eccentric adjustment amount is 5 mm. Thus, the adjusted processing aperture of the workpiece is 25mm of the aperture of the semi-finished product plus 5mm of the second eccentric adjustment amount, which is equal to 30mm, and the aperture of the expected processing is obtained. And, the central axis of cutter arbor 200 coincides with the central axis of drive shaft this moment, can improve the machining efficiency of processing cutter 10, guarantee the stability of cutter processing size to guarantee that processing cutter 10 can realize high rotational speed processing.

It should be noted that in each embodiment the aperture is referred to as a radius.

Referring to FIG. 1, in one embodiment, a first mark 120 is provided on the tool shank 100. The adjusting member 300 is provided with a second mark 310. The second indicia 310 is used to cooperate with the first indicia 120 to determine the relative position of the tool bar 200 and tool shank 100. Thus, the first eccentric adjustment amount of each position in the process of operating the cutter bar 200 by the adjusting piece 300 can be clarified, so that the first eccentric adjustment amount can be accurately controlled, and the machining aperture size of the machining cutter 10 can be accurately adjusted. And, it is also convenient to record the relative position of the first mark 120 and the second mark 310 when the cutter bar 200 is at the first position, and to reset the cutter bar 200.

Referring again to fig. 3 in conjunction with fig. 5, in one embodiment, the machining tool 10 further includes a connector 400. The coupling member 400 includes a first coupling end 410 coupled to the tool shank 100 and a second coupling end 420 coupled to the adjustment member 300. The first connection end 410 and the second connection end 420 are connected to each other. The connecting member 400 is used to drive the adjusting member 300 and the tool bar 200 to rotate when the tool holder 100 rotates. By arranging the connecting piece 400 connected between the tool handle 100 and the adjusting piece 300, on one hand, the adjusting piece 300 can be convenient to operate the tool bar 200 to rotate relative to the tool handle 100; on the other hand, the interval between the central axis of the adjusting member 300 and the central axis of the driving shaft can be conveniently realized, so that the structure is simpler.

With continued reference to fig. 6-7 in conjunction with fig. 3, in one embodiment, the machining tool 10 further includes a first fixture 600. The tool holder 100 is provided with a first mounting hole 110 extending in the axial direction. The first connection end 410 is disposed through the first mounting hole 110. The hole wall of the first mounting hole 110 is provided with a first through hole 111 extending along the radial direction and matching with the first fixing member 600. The first fixing member 600 passes through the first through hole 111 and is connected to the first connection end 410 for fixing the connection member 400, the adjustment member 300, and the tool bar 200 relative to the tool holder 100. In this manner, the tool shank 100 is able to transmit a rotational movement to the tool bar 200 via the connecting member 400 and the adjusting member 300 for machining the tool 10. It can be understood that the adjusting member 300 can be released by controlling the first fixing member 600, so that the position of the tool bar 200 relative to the tool shank 100 can be eccentrically adjusted by the adjusting member 300. When the first fixing member 600 clamps the tool shank, the radial direction refers to a direction intersecting the central axis of the tool shank 100 on a plane perpendicular to the Y-axis, and the X-axis direction is one of the radial directions.

Referring to fig. 6 to 7 in combination with fig. 3, in an embodiment, the adjusting element 300 has a second mounting hole 320 formed along the axial direction. The wall of the second mounting hole 320 is provided with a step 321 extending in the radial direction. The second connecting end 420 is provided with a radially extending abutting portion 421, and the second connecting end 420 is disposed through the second mounting hole 320. One end surface of the step 321 is in sliding fit with the end surface of the abutting portion 421, and the other end surface of the step 321 is in sliding fit with the end surface of the tool holder 100. In this manner, the adjustment member 300 can rotate relative to the tool shank 100 to eccentrically rotate the operating tool bar 200 relative to the tool shank 100.

Referring to fig. 8 and 9 in conjunction with fig. 5, in one embodiment, the radial dimension of the first fixing member 600 gradually increases from the proximal end to the distal end of the central axis of the connecting member 400 along the radial direction of the connecting member 400. The first connecting end 410 is formed with a first fitting hole 411 matching the shape of the first fixing member 600. The first fixture 600 is engaged with the hole wall of the first engagement hole 411 for moving the connection member 400 in the axial direction. The abutment 421 serves to clamp the adjuster 300 together with the tool shank 100 when the connector 400 is moved in the radial direction. The central axis of the connector 400 is shown in phantom line J in fig. 8. The radial direction of the connector 400 is a direction perpendicular to and crossing the imaginary line J. The X-axis direction in fig. 8 is one of the radial directions.

In the above embodiment, the radial dimension of the first fixing member 600 is gradually increased from the near side to the far side from the central axis of the connection member 400 in the radial direction of the connection member 400. In other words, at least one end of the first fixing member 600 near the central axis of the connection member 400 is provided with a cone or a truncated cone structure. The first fitting hole 411 is matched with the structure of the first fixing member 600, that is, the first fitting hole 411 is gradually expanded from near to far from the central axis of the connecting member 400 along the radial direction of the connecting member 400. As shown in fig. 8 and 9, the first fixing member 600 and the hole wall of the first fitting hole 411 are configured to have wedge surfaces that are fitted with each other. Thus, for example, when the first fixing member 600 is close to the central axis of the connector 400 along the negative X-axis direction, the first fixing member 600 can press the connector 400 through the wedge-shaped surface, so that the connector 400 moves in the axial direction.

It should be understood that when the first fixing member 600 is close to the central axis of the connecting member 400 in the negative X-axis direction, the first fixing member 600 can drive the connecting member 400 to move in the positive Y-axis direction. In this way, the abutting portion 421 can clamp the step 321 of the adjuster 300 together with the tool holder 100 to prevent the adjuster 300 from shaking when the machining tool 10 machines a workpiece.

It can be understood that, when the first fixing element 600 is not in contact with and engaged with the first engaging hole 411, the first through hole 111 and the first engaging hole 411 are disposed in a staggered manner, that is, the first through hole 111 and the first engaging hole 411 are not disposed in a non-concentric manner. Therefore, when the first fixing member 600 presses against the hole wall of the first fitting hole 411, the connecting member 400 can move in the axial direction to make the first through hole 111 and the first fitting hole 411 approach to be concentric or keep concentric.

In contrast to abutting the connecting member 400 by a side set screw or directly abutting the adjusting member 300 by a side set screw, in the above-described embodiment, by moving the connecting member 400 in the axial direction to clamp the adjusting member 300, it is possible to avoid displacement of the adjusting member 300 in the radial direction. In other words, the first fixing member 600 is press-fitted into the first fitting hole 411 in a wedge shape, so that the holder 100 and the contact portion 421 can clamp the step 321 in the axial direction together, and the adjuster 300 can be held and fixed with respect to the holder 100. Thereby holding tool bar 200 stationary relative to tool shank 100. That is, the adjustment member 300 and the cutter bar 200 can be prevented from being displaced in the radial direction by the fixing method of axially clamping the adjustment member 300 and the manner of radially abutting against each other, thereby preventing an error from being generated in the radial direction and preventing a large error from being caused in the dimension of the machining hole diameter.

Referring to fig. 10, in one embodiment, the machining tool 10 further includes a reducing sleeve 500. One end of the reducing sleeve 500 is connected with the adjusting piece 300, and the other end of the reducing sleeve 500 is connected with the cutter bar 200. The reducing sleeve 500 is used for driving the cutter bar 200 to rotate when the adjusting piece 300 rotates. In other words, the tool shank 200 can be indirectly connected to the adjusting element 300 via the reducing sleeve 500. Therefore, the adjusting piece 300 can be connected with the cutter bars 200 with different sizes by replacing the variable diameter sleeves 500 with different models so as to adapt to various processing requirements. It will be appreciated that the knife bar 200 may also be directly connected to the adjustment member 300.

In the above embodiment, referring to fig. 8, the reducing sleeve 500 has a third mounting hole 510 formed therein and extending in the axial direction. The wall of the third mounting hole 510 is provided with a second through hole 511. The second fixing member 700 is inserted into the second insertion hole 511. Similar to the first fixture 600, the radial size of the second fixture 700 gradually increases from the near to the far from the central axis of the tool bar 200 in the radial direction of the tool bar 200. One end of the tool bar 200 is provided with a second matching hole 213 matched with the shape of the second fixing member 700. Thus, through the connection and matching of the second fixing member 700 and the second fitting member, the cutter bar 200 can be kept relatively fixed with the reducing sleeve 500 in an axial fixing manner, so that errors generated in the radial direction of the cutter bar 200 in the fixing process can be avoided.

Referring to fig. 8, the cutter bar 200 is provided with a radially extending limiting portion 211. The stopper 211 is used to abut against the reducing sleeve 500 when the tool bar 200 moves in the axial direction, so that the tool bar 200 and the reducing sleeve 500 are fixed. It will be appreciated that when the knife bar 200 is directly connected to the adjuster 300, the abutment 421 serves to abut the adjuster 300 when the knife bar 200 is moved axially.

It can be understood that the wall of the second mounting hole 320 is provided with a third through hole 322. The third through hole 322 is concentric with the second through hole 511. The second fixing member 700 is partially located in the third through hole 322. Thus, the reducing sleeve 500 and the adjusting member 300 can be relatively fixed by the connection relationship between the second fixing member 700 and the second through hole 511 and the connection relationship between the second fixing member 700 and the third through hole 322.

Referring to fig. 11, in one embodiment, the reducing sleeve 500 is provided with a plurality of third mounting holes 510. The bore walls of the third plurality of mounting bores 510 can each be used in connection with the cutter bar 200 to transmit the driving motion of the drive shaft to the cutter bar 200. In this embodiment, the third mounting hole 510 may extend in the axial direction of the drive shaft, may be perpendicular to the neutral axis of the drive shaft, or a combination thereof. The machining tool 10 can be selectively installed in different third installation holes 510 according to requirements during the actual machining process, so as to further increase the adjustable machining size range of the machining tool 10.

It is understood that in the above embodiments, the reducing sleeve 500 and the tool bar 200 may still be connected by the second fixing member 700 described in the embodiments, and thus, the detailed description is omitted.

In various embodiments, the first through holes 111 may be provided in plural, and the plural first through holes 111 are circumferentially distributed along the axial direction. The second through hole 511, the third through hole 322, the first matching hole 411 and the second matching hole 213 are the same and will not be described again.

In one embodiment, the tool shank 100 and the adjustment member 300 may be connected in a manner that interchanges the axes of the bores. That is, the first mounting hole 110 may be formed in the adjusting member 300, the tool holder 100 is inserted into the first mounting hole 110, and the tool holder 100 and the hole wall of the first mounting hole 110 are relatively fixed. The connection mode of the adjusting element 300 and the reducing sleeve 500 can be exchanged by the hole shaft, and the description is omitted.

Referring to fig. 12, in one embodiment, the tool bar 200 includes a rod 210 and a slider 220 connected to the rod 210. The body of rod 210 is connected with adjusting part 300, and the central axis of the body of rod 210 and the neutral axis coincidence of drive shaft, the one end of the body of rod 210 is equipped with the spacing portion 211 that is used for with reducing cover 500 or adjusting part 300 butt.

The rod 210 has a sliding slot 212, and the blade 230 is disposed on the sliding base 220. The sliding base 220 is slidably engaged with a groove wall of the sliding groove 212, and the sliding base 220 is used for adjusting the distance between the blade 230 and the central axis of the driving shaft when sliding relative to the groove wall of the sliding groove 212. In connection with the above-described embodiment, the blade 230 can be slid into contact with the surface to be processed of the workpiece by sliding the slide 220 relative to the groove wall of the slide groove 212.

Further, the tool bar 200 further comprises a fastening member 240. Two opposite side walls of the sliding groove 212 are provided with fixing holes 212a for the fixing member 240 to pass through. The fastening member 240 is connected to opposite sidewalls of the chute 212 for moving the opposite sidewalls of the chute 212 toward and away from each other to grip the sled 220. In this manner, when the slide 220 slides until the blade 230 contacts the surface to be machined of the workpiece, the slide 220 can be locked by the fastening member 240.

Referring to fig. 3, the sliding base 220 is formed with a through hole 221, and the fastening member 240 passes through the through hole 221 and is connected to two opposite walls of the sliding slot 212. In this way, interference between the slider 220 and the fastening member 240 can be avoided.

In one embodiment, the shape of the slider 220 may match the shape of the chute 212.

In other embodiments, the movable connection between the blade 230 and the rod 210 may be a tooth joint, a ladder-groove joint, a dovetail joint, or the like. Furthermore, the rod 210 may be further provided with an adjusting screw for adjusting the position of the blade 230 relative to the rod 210.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. A machine tool, comprising:

the cutter handle is connected with a driving shaft for driving the cutter handle to move;

the cutter bar is connected with the cutter handle to move along with the cutter handle under the driving of the cutter handle, the central axis of the cutter bar is overlapped with the central axis of the driving shaft, the cutter bar comprises a blade for processing a workpiece when the cutter bar moves, and the blade can move relative to the cutter handle to adjust the maximum distance of the blade relative to the central axis of the driving shaft;

the adjusting piece is connected with the cutter bar, the cutter bar can rotate around the central axis of the adjusting piece relative to the cutter handle by operating the adjusting piece, and an interval exists between the central axis of the adjusting piece and the central axis of the driving shaft.

2. The machine tool of claim 1 wherein the tool holder has a first position and a second position relative to the shank; when the cutter bar is located at the first position, the central axis of the cutter bar is coincident with the central axis of the driving shaft, and a first machining distance is reserved between the blade and the central axis of the driving shaft and is equal to the radius of a workpiece hole which can be machined by the machining cutter; when the cutter bar is located at the second position, a gap exists between the central axis of the cutter bar and the central axis of the driving shaft, and at the moment, the blade has a preset distance from the central axis of the driving shaft, wherein the preset distance is equal to the radius of a hole to be machined in a workpiece.

3. The machine tool of claim 2 wherein the central axis of the drive shaft coincides with the central axis of the hole to be machined in the workpiece, the insert being adapted to contact the wall of the hole to be machined in the workpiece when the tool holder is in the second position.

4. The machining tool of claim 1, further comprising a connecting member, the connecting member including a first connecting end connected to the shank and a second connecting end connected to the adjustment member, the first connecting end and the second connecting end being interconnected, the connecting member being configured to drive the adjustment member and the shank to rotate when the shank rotates.

5. The machining tool according to claim 4, further comprising a first fixing member, wherein the tool holder is provided with a first mounting hole extending in an axial direction, the first connecting end penetrates through the first mounting hole, a first penetrating hole extending in a radial direction and matched with the first fixing member is formed in a hole wall of the first mounting hole, and the first fixing member penetrates through the first penetrating hole and is connected with the first connecting end to enable the connecting member, the adjusting member and the tool bar to be relatively fixed with the tool holder.

6. The machining tool according to claim 5, wherein the adjusting member is provided with a second mounting hole along the axial direction, a radially extending step is provided on a hole wall of the second mounting hole, the second connecting end is provided with a radially extending abutting portion, the second connecting end is inserted into the second mounting hole, an end face of one of the steps is in sliding fit with an end face of the abutting portion, and the other end face of the step is in sliding fit with an end face of the tool holder.

7. The machining tool according to claim 6, wherein the radial dimension of the first fixing member gradually increases from near to far from the central axis of the connecting member in the radial direction of the connecting member, the first connecting end is provided with a first fitting hole matched with the first fixing member in shape, the first fixing member is fitted with a hole wall of the first fitting hole to move the connecting member in the axial direction, and the abutting portion is used for clamping the adjusting member together with the tool holder when the connecting member moves in the radial direction.

8. The machining tool of claim 1, wherein the tool bar includes a rod and a slide connected to the rod, the rod is connected to the adjusting member, the blade is disposed on the slide, a sliding groove is formed on the rod, the slide is slidably engaged with a groove wall of the sliding groove, and the slide is configured to adjust a distance between the blade and the central axis of the driving shaft when sliding relative to the groove wall of the sliding groove.

9. The machining tool according to claim 8, wherein the tool bar further comprises a fastening member, two opposite side walls of the sliding groove are provided with fastening holes for passing through the fastening member, and the fastening member is connected with the two opposite side walls of the sliding groove for enabling the two opposite side walls of the sliding groove to approach and separate from each other so as to clamp the sliding seat.

10. The machining tool of claim 1, further comprising a reducing sleeve, wherein one end of the reducing sleeve is connected with the adjusting piece, the other end of the reducing sleeve is connected with the cutter bar, and the reducing sleeve is used for driving the cutter bar to rotate when the adjusting piece rotates.

11. A machining device, characterized in that the machining device comprises:

the machining tool of any one of claims 1 to 10;

the driving assembly comprises a driving piece and a driving shaft connected with the driving piece, and the driving shaft is connected with the machining tool and used for driving the machining tool to rotate along the central axis of the driving shaft.

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