CN222589221U - Screw tap clamping device and grinding machine equipment with same - Google Patents

Abstract

The present application discloses a tap clamping device and a grinding machine device having the same, including: a rotary positioning mechanism and an auxiliary positioning mechanism, the rotary positioning mechanism is used to position the first end of a workpiece and drive the workpiece to rotate; the auxiliary positioning mechanism includes a positioning member and a mounting member, a clamping position for clamping the workpiece is formed between the positioning member and the rotary positioning mechanism, and is used to position the second end of the workpiece opposite to the first end, one end of the mounting member is connected to the positioning member, and an avoidance groove is provided on the other end, the avoidance groove is used to accommodate an external cylindrical machining mold coaxially arranged with the slotting mold when the slotting mold processes the thread groove on the workpiece. The tap clamping device of the present application can be used in conjunction with a coaxially arranged double mold, and can position both ends of the workpiece, which not only improves the machining efficiency, but also improves the machining accuracy.

Description

Screw tap clamping device and grinding machine equipment with same

Technical Field

The application relates to the technical field of tap processing, in particular to a tap clamping device and grinding machine equipment with the tap clamping device.

Background

In the related art, in the process of machining a workpiece into a tap, two grinding wheels are needed to be used for sequentially machining the workpiece, a semi-finished product with external threads is machined by using a slotting grinding wheel, then the slotting grinding wheel is replaced by an external round grinding wheel, and external round machining forming is carried out on the external threads of the semi-finished product by using the external round grinding wheel.

However, in batch processing production, frequent replacement of the clamping grinding wheel affects not only efficiency but also processing accuracy. Therefore, grinding devices for coaxially installing the slotting grinding wheel and the outer circle grinding wheel appear in the market, and in order to avoid interference between the outer circle grinding wheel and a tap clamping device for clamping a workpiece during machining of the slotting grinding wheel, the existing tap clamping device only clamps one end of the workpiece to drive the workpiece to rotate, and the other end of the workpiece is not positioned, so that the outer circle grinding wheel is positioned on one side of the other end of the workpiece during machining of the slotting grinding wheel, interference is avoided, but the jump of the workpiece in the machining process is obvious, and the machining precision of the workpiece is greatly affected.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the screw tap clamping device and the grinding machine device provided by the utility model can be matched with the coaxially arranged double grinding tools for use, and can be used for positioning the two ends of a workpiece, so that the machining efficiency is improved, and the machining precision is also improved.

The utility model further provides grinding machine equipment with the tap clamping device.

The tap clamping device comprises a rotary positioning mechanism and an auxiliary positioning mechanism, wherein the rotary positioning mechanism is used for positioning a first end of a workpiece and driving the workpiece to rotate, the auxiliary positioning mechanism comprises a positioning piece and a mounting piece, a clamping position for clamping the workpiece is formed between the positioning piece and the rotary positioning mechanism and is used for positioning a second end, opposite to the first end, of the workpiece, one end of the mounting piece is connected with the positioning piece, an avoidance groove is formed in the other end of the mounting piece, and the avoidance groove is used for accommodating an excircle machining grinding tool coaxially arranged with the slotting grinding tool when the slotting grinding tool machines machine threads grooves on the workpiece.

The tap clamping device at least has the advantages that the tap clamping device comprises the rotary positioning mechanism and the auxiliary positioning mechanism, the positioning piece in the auxiliary positioning mechanism and the rotary positioning mechanism are arranged oppositely, clamping positions are formed between the positioning piece and the rotary positioning mechanism, when the tap clamping device is used, the rotary positioning mechanism is used for positioning the first end of a workpiece and can drive the workpiece to rotate, the positioning piece of the auxiliary positioning mechanism is used for positioning the second end of the workpiece, the workpiece is positioned in the clamping positions, and the two ends of the workpiece are positioned, so that the runout of the workpiece in the machining process is greatly reduced, in addition, the mounting piece connected with the positioning piece is provided with the avoidance groove, and the double-grinding tool can comprise a grooved grinding tool and an excircle machining grinding tool which are coaxially arranged, wherein the grooved grinding tool is used for cutting an external thread groove into the workpiece, and the excircle machining tool is used for excircle machining of the workpiece.

According to some embodiments of the utility model, the positioning member is a first tip detachably connected to a side of the mounting member facing the rotational positioning mechanism.

According to some embodiments of the utility model, the auxiliary positioning mechanism further comprises an adjusting assembly connected to the mounting member for adjusting the coaxiality of the first tip and the rotation axis of the rotary positioning mechanism.

According to some embodiments of the utility model, the adjusting assembly comprises a first adjusting member, a second adjusting member, a base, a first connecting member and a second connecting member, wherein the mounting member is arranged on the first adjusting member, the first connecting member is connected with the first adjusting member and the second adjusting member and is used for adjusting the relative positions of the first adjusting member and the second adjusting member in a first direction, the second connecting member is connected with the second adjusting member and the base and is used for adjusting the relative positions of the second adjusting member and the base in a second direction, and the first direction, the second direction and the rotating shaft of the rotating positioning mechanism are perpendicular to each other.

According to some embodiments of the utility model, the mounting piece is provided with a mounting hole, the first center is mounted in the mounting hole, one end of the mounting piece, which is far away from the positioning piece, is provided with an arc-shaped portion, the adjusting component is correspondingly provided with an arc-shaped groove, the arc-shaped portion is embedded in the arc-shaped groove, and the arc-shaped surface of the arc-shaped portion and the mounting hole are coaxially arranged.

According to some embodiments of the utility model, the rotary positioning mechanism comprises a second center and a rotary assembly, wherein the second center is coaxially connected to the rotary assembly and used for abutting and positioning the first end of the workpiece, the clamping position is formed between the positioning piece and the second center, and the rotary assembly abuts against the peripheral surface of the workpiece and is used for driving the workpiece to rotate.

According to some embodiments of the utility model, the rotating assembly comprises a turntable and a rotating clamping jaw, the rotating clamping jaw and the second center are both connected to the turntable, and the rotating clamping jaw can drive the workpiece to synchronously rotate along with the second center under the driving of the turntable.

According to some embodiments of the utility model, at least two rotating clamping jaws are provided, a containing position for a workpiece to pass through is formed between the rotating clamping jaws, and the gathering degree between the rotating clamping jaws is adjustable so as to adjust the size of the containing position to adapt to workpieces with different handle sizes.

According to a second aspect of the present utility model, a grinding machine apparatus includes a grinding device and a tap holder according to the first aspect of the present utility model, wherein the grinding device includes a grooving grinder and an excircle processing grinder coaxially disposed, and the grooving grinder and the excircle processing grinder are disposed on one side of the tap holder.

The grinding machine equipment at least has the advantages that the grinding machine equipment comprises the grinding device and the tap clamping device in the embodiment of the first aspect, the grinding device is positioned on one side of the tap clamping device and comprises the grooving grinding tool and the excircle machining grinding tool which are coaxially arranged, so that grooving machining and excircle machining of a workpiece can be sequentially achieved, the grinding tools clamped in the grinding device do not need to be replaced frequently, machining efficiency is improved, and two ends of the workpiece are positioned through the tap clamping device, and machining quality is improved.

According to some embodiments of the present utility model, the grinding apparatus includes a locking assembly and a first spacer disposed between the slotting grinding tool and the outer circle machining grinding tool and used for adjusting the distance between the slotting grinding tool and the outer circle machining grinding tool, and the locking assembly is used for locking the slotting grinding tool and the outer circle machining grinding tool.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic overall structure of one embodiment of a grinding machine apparatus according to a second aspect of the present utility model;

FIG. 2 is a side view of one embodiment of a tap holder according to an embodiment of the first aspect of the utility model;

FIG. 3 is a top view of one embodiment of the tap holder shown in FIG. 2;

FIG. 4 is a schematic view of the structure of the double grinding tool, workpiece, rotating assembly and auxiliary positioning mechanism in the grinding machine apparatus shown in FIG. 1;

FIG. 5 is a schematic view of the structure of the workpiece, rotating assembly and auxiliary positioning mechanism in the tap holder shown in FIG. 2;

FIG. 6 is a cross-sectional view of the first tip and the mount in the tap holder shown in FIG. 2;

FIG. 7 is an enlarged view of a portion of FIG. 2 at A;

FIG. 8 is a schematic view of the first adjustment member of the tap holder shown in FIG. 2;

FIG. 9 is a schematic view of the second adjustment member of the tap holder shown in FIG. 2;

FIG. 10 is a schematic view of the structure of the workpiece, the rotating assembly, the second point and the auxiliary locating mechanism in the tap holder shown in FIG. 2;

Fig. 11 is a cross-sectional view of a grinding apparatus in the grinding machine apparatus shown in fig. 1.

Reference numerals:

The rotary positioning mechanism 100, the second center 110, the rotary clamping jaw 120, the first rotary driving assembly 130, the rotary table 140, the auxiliary positioning mechanism 200, the first center 210, the mounting piece 220, the avoiding groove 221, the mounting hole 222, the arc-shaped portion 223, the through hole 224, the adjusting assembly 230, the first adjusting piece 231, the arc-shaped groove 2311, the strip-shaped groove 2312, the second threaded hole 2313, the third threaded hole 2314, the second adjusting piece 232, the first threaded hole 2321, the waist-shaped hole 2322, the translational driving mechanism 300, the grinding device 400, the double grinding tool 410, the grooving grinding tool 411, the outer circle machining grinding tool 412, the second rotary driving assembly 420, the first flange 431, the first spacer 432, the second spacer 433, the second flange 434 and the workpiece 500.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The tap holding device and the grinder apparatus having the same according to the embodiment of the present utility model will be described below with reference to fig. 1 to 11.

As shown in fig. 2 to 10, the tap clamping device according to the first aspect of the utility model comprises a rotary positioning mechanism 100 and an auxiliary positioning mechanism 200, wherein the rotary positioning mechanism 100 is used for positioning a first end of a workpiece 500 and driving the workpiece 500 to rotate, the auxiliary positioning mechanism 200 comprises a positioning member and a mounting member 220, a clamping position for clamping the workpiece 500 is formed between the positioning member and the rotary positioning mechanism 100 and is used for positioning a second end of the workpiece 500 opposite to the first end, one end of the mounting member 220 is connected with the positioning member, the other end of the mounting member 220 is provided with a avoiding groove 221, and the avoiding groove 221 is used for accommodating an excircle processing tool 412 coaxially arranged with the slotting tool 411 when the slotting tool 411 processes a thread groove on the workpiece 500.

It can be understood that the tap clamping device comprises a rotary positioning mechanism 100 and an auxiliary positioning mechanism 200, wherein a positioning piece in the auxiliary positioning mechanism 200 and the rotary positioning mechanism 100 are oppositely arranged and form a clamping position therebetween, when the tap clamping device is used, the rotary positioning mechanism 100 is used for positioning a first end of a workpiece 500 and can drive the workpiece 500 to rotate, the positioning piece of the auxiliary positioning mechanism 200 is used for positioning a second end of the workpiece 500, so that the workpiece 500 is positioned in the clamping position and positions two ends of the workpiece 500, thereby greatly reducing the jump of the workpiece 500 in the machining process, in addition, the mounting piece 220 connected with the positioning piece is provided with the avoiding groove 221, and the double-grinding tool can comprise a grooved grinding tool 411 and an excircle machining grinding tool 412 which are coaxially arranged, wherein the grooved 411 is used for excircle machining the workpiece 500, and when the grooved grinding tool 411 is used for machining the outer thread of the workpiece 500, the excircle machining tool 412 can be accommodated in the avoiding that the excircle machining 412 is accommodated in the avoiding groove 221 and positioning the two ends of the workpiece 500, thus the clamping device is not matched with the coaxially arranged grinding tool, and the clamping device can be used for machining the workpiece 500 frequently.

It should be appreciated that the grooved abrasive article 411 and the cylindrical working abrasive article 412 may be in the shape of a grinding wheel or in the shape of a grinding head. In summary, the cylindrical machining grinder 412 is closer to the workpiece 500 than the slotting grinder 411 in a plane perpendicular to the axis of the workpiece 500. During processing, the grooving die is used for grooving the peripheral surface of the workpiece 500 to form an external thread groove, at this time, the external thread processing tool 412 can avoid through the avoiding groove 221 of the mounting piece 220, and then the external thread on the workpiece 500 is processed by the external thread processing tool 412, at this time, the grooving tool 411 is farther from the workpiece 500 than the external thread processing tool 412, so that interference with the workpiece 500 can not occur.

It should be understood that the positioning member and the mounting member 220 may be two separate parts or may be two portions of one part formed by integral molding.

It should be understood that the tap holding device further includes a translational driving mechanism 300, where an output end of the translational driving mechanism 300 is connected to the rotational positioning mechanism 100, and may also be connected to the auxiliary positioning mechanism 200, so that the rotational positioning mechanism 100 or the auxiliary positioning mechanism 200 can be driven to translate, so as to adjust a distance between the rotational positioning mechanism 100 and the auxiliary positioning mechanism 200, thereby implementing clamping or loosening of the workpiece 500.

It will be appreciated that the positioning member is a first tip 210, and that the first tip 210 is detachably connected to the side of the mounting member 220 facing the rotational positioning mechanism 100. For example, as shown in fig. 4 to 5, in the present embodiment, by detachably connecting the first tip 210 with the mount 220, it is possible to enable quick replacement of the first tip 210 that causes wear over a long period of use, and to save replacement costs.

It should be appreciated that in addition to the configuration in which the locating member is provided as a point in the above-described embodiments, in other embodiments, the locating member may be provided as another component having a configuration that is compatible with the second end of the workpiece 500. For example, when the second end of the workpiece 500 is tapered, the positioning member need only be provided with a tapered slot adapted to the second end.

It will be appreciated that the auxiliary positioning mechanism 200 further includes an adjustment assembly 230, wherein the adjustment assembly 230 is coupled to the mounting member 220 and is configured to adjust the coaxiality of the first center 210 with the rotational axis of the rotary positioning mechanism 100. For example, as shown in fig. 4 to 10, in the present embodiment, the auxiliary positioning mechanism 200 further includes an adjusting assembly 230, where the adjusting assembly 230 is used to adjust the coaxiality of the first center 210 and the rotation axis of the rotary positioning mechanism 100, so that the rotary positioning mechanism 100 and the first center 210 can achieve alignment positioning on two ends of the workpiece 500.

It will be appreciated that, as shown in fig. 5, the adjusting assembly 230 includes a first adjusting member 231, a second adjusting member 232, a base, a first connecting member and a second connecting member, the mounting member 220 is disposed on the first adjusting member 231, the first connecting member connects the first adjusting member 231 and the second adjusting member 232, and is used for adjusting the relative positions of the first adjusting member 231 and the second adjusting member 232 in a first direction, and the second connecting member connects the second adjusting member 232 and the base, and is used for adjusting the relative positions of the second adjusting member 232 and the base in a second direction, and the first direction, the second direction and the rotation axis of the rotation positioning mechanism 100 are mutually perpendicular. For example, as shown in fig. 5 to 9, in the present embodiment, the adjusting assembly 230 includes a first adjusting member 231, a second adjusting member 232, a base, a first connecting member and a second connecting member, the first center 210 is disposed on the first adjusting member 231 through the mounting member 220, the second adjusting member 232 is disposed on the base, the first connecting member connects the first adjusting member 231 and the second adjusting member 232, and can adjust the position of the first center 210 relative to the second adjusting member 232 in the first direction, that is, can adjust the position of the first center 210 relative to the rotary positioning mechanism 100 in the first direction, and the second connecting member connects the second adjusting member 232 and the base, and can adjust the position of the second adjusting member 232 relative to the base in the second direction, that is, can adjust the position of the first center 210 relative to the rotary positioning mechanism 100 in the second direction, that is, the first direction, the second direction and the rotation axis of the rotary positioning mechanism 100 are perpendicular to each other, that is, the adjustment of the coaxiality of the first center 210 and the rotary positioning mechanism 100 is achieved through the adjusting assembly 230.

Thus, before machining, after the rotary positioning mechanism 100 and the first center 210 are adjusted to be coaxial, the workpiece 500 is transplanted to the clamping position, and the rotary positioning mechanism 100 and the auxiliary positioning mechanism 200 are driven by the translational driving mechanism 300 to position the workpiece 500 and drive the workpiece 500 to rotate, so that the workpiece 500 is machined by the grinding tool.

Specifically, in this embodiment, as shown in fig. 8 and 9, the first adjusting member 231 is provided with a bar-shaped groove 2312, the second adjusting member 232 is provided with a first threaded hole 2321 adapted to the first connecting member, so that the first connecting member can be screwed to the second adjusting member 232 after passing through the bar-shaped groove 2312, and the position of the first adjusting member 231 relative to the second adjusting member 232 in the first direction is achieved by changing the position of the first connecting member in the bar-shaped groove 2312, the second adjusting member 232 is further provided with a waist-shaped hole 2322, and the base is provided with a fourth threaded hole adapted to the second connecting member, so that the second connecting member can be screwed to the base after passing through the waist-shaped hole 2322, and the position of the second adjusting member 232 relative to the base is adjusted by changing the position of the second connecting member relative to the waist-shaped hole 2322.

It should be appreciated that the adjusting assembly 230 further includes a third connecting member, the first adjusting member 231 is further provided with a third threaded hole 2314 adapted to the third connecting member, the third threaded hole 2314 is disposed through the first adjusting member 231, and when the first adjusting member 231 and the second adjusting member 232 are connected together, the first adjusting member 231 and the second adjusting member 232 can be screwed to the third threaded hole 2314 by the third connecting member and abut against the second adjusting member 232, so that locking of the first adjusting member 231 and the second adjusting member 232 can be achieved. And the coaxiality of the first center 210 and the rotation axis of the rotary positioning mechanism 100 is adjusted by rotating the first adjusting member 231 relative to the second adjusting member 232, and the locking of the first adjusting member 231 and the second adjusting member 232 is realized by the third connecting member.

It should be appreciated that in addition to the above-described adjustment of the coaxiality of the first tip 210 with the rotational axis of the rotary positioning mechanism 100 by manually adjusting the adjustment assembly 230, in other embodiments, the coaxiality adjustment may be achieved by automatic positioning. For example, by utilizing mechanisms such as an alignment platform in the prior art, coaxiality adjustment is realized by the aid of a visual positioning mechanism, so that automatic coaxiality adjustment is realized.

It will be appreciated that, as shown in fig. 5 and 6, the mounting member 220 is provided with a mounting hole 222, the first center 210 is mounted in the mounting hole 222, an arc portion 223 is disposed at one end of the mounting member 220 away from the positioning member, the adjusting component 230 is correspondingly provided with an arc slot 2311, the arc portion 223 is embedded in the arc slot 2311, and the arc surface of the arc portion 223 is coaxially disposed with the mounting hole 222. For example, as shown in fig. 5 to 8, in the present embodiment, the first center 210 is mounted on the mounting member 220 through the mounting hole 222, the arc portion 223 provided on the mounting member 220 is embedded in the arc groove 2311 provided on the adjusting component 230, and the shape of the arc portion 223 is not only capable of satisfying the positioning of the mounting member 220 and the adjusting component 230, but also convenient for processing, and in addition, the arc surface of the arc portion 223 is coaxial with the mounting hole 222, thereby also facilitating processing of the mounting hole 222 for mounting the first center 210.

It should be understood that, as shown in fig. 6 and 8, the adjusting assembly 230 further includes a fourth connecting member, the first adjusting member 231 is provided with a second threaded hole 2313 adapted to the fourth connecting member, and the mounting member 220 is provided with a through hole 224 corresponding to the second threaded hole 2313. Therefore, the fourth connecting member can be screwed to the first adjusting member 231 after passing through the through hole 224, thereby achieving connection fixation between the mounting member 220 and the first adjusting member 231.

It should be understood that, in addition to the shape of the arc-shaped portion 223 adapted to the first adjusting member 231 in the present embodiment, in other embodiments, the mounting member 220 may be further provided with a square portion, and the first adjusting member 231 may be provided with a square groove adapted to the square portion, and the square portion may be embedded in the square groove, so as to achieve positioning between the mounting member 220 and the first adjusting member 231.

Specifically, in the present embodiment, the first center 210 is in interference fit with the mounting hole 222 of the mounting member 220, so as to achieve connection and fixation of the first center 210 and the mounting member 220. In other embodiments, the locking member may connect the first tip 210 with the mounting member 220 by a locking member, so as to achieve locking fixation of the first tip 210 and the mounting member 220.

It will be appreciated that, as shown in fig. 7, the rotary positioning mechanism 100 includes a second center 110 and a rotary assembly, the second center 110 is coaxially connected to the rotary assembly and is used for abutting against and positioning a first end of the workpiece 500, a clamping position is formed between the positioning member and the second center 110, and the rotary assembly abuts against a peripheral surface of the workpiece 500 and is used for driving the workpiece 500 to rotate. For example, as shown in fig. 7 and 10, in the present embodiment, the rotary positioning mechanism 100 includes a second center 110 and a rotary assembly, where the second center 110 and the positioning member are opposite to each other and form a clamping position therebetween, and when in use, the first end and the second end of the product are respectively positioned by the second center 110 and the positioning member, and then the workpiece 500 is driven to rotate by the rotary assembly, so that the workpiece 500 is processed by the grinding tool.

It should be understood that the rotary positioning mechanism 100 includes a first rotary driving assembly 130, and an output end of the first rotary driving assembly 130 is connected to the rotary assembly and drives the workpiece 500 to rotate by driving the rotary assembly.

It can be appreciated that the rotating assembly includes a turntable 140 and a rotating clamping jaw 120, the rotating clamping jaw and the second center 110 are both connected to the turntable 140, and the rotating clamping jaw 120 can drive the workpiece 500 to synchronously rotate along with the second center 110 under the driving of the turntable 140. For example, as shown in fig. 7 and 10, in this embodiment, the rotating assembly includes a turntable 140 and a rotating clamping jaw 120, where the rotating clamping jaw 120 and the second center 110 are respectively connected to the turntable 140, and the turntable 140 can drive the rotating clamping jaw 120 to rotate after rotating, so that the rotating clamping jaw 120 abuts against the handle of the workpiece 500 and pushes the handle of the workpiece 500 to rotate, and thus, the rotation synchronism of the workpiece 500 and the second center 110 can be achieved.

It should be understood that in this embodiment, instead of positioning the workpiece 500 by means of the rotating clamping jaw 120, positioning of both ends of the workpiece 500 is achieved by the second center 110 and the positioning member, and then the rotating clamping jaw 120 is driven by the turntable 140 to rotate, and the rotating clamping jaw 120 contacts the shank of the workpiece 500 and pushes the shank of the workpiece 500 to rotate. Because the coaxiality of the second center 110 and the positioning piece is adjusted in advance, the workpiece 500 can be positioned accurately. It should be appreciated that in this embodiment, the shank of the workpiece 500 is rectangular, so that rotating the jaws can push the shank of the workpiece 500 into rotation.

It should be appreciated that in other embodiments, clamping positioning or loosening of the first end of the workpiece 500 may be accomplished by the rotating jaws 120 being moved closer to or farther from each other, and rotation of the workpiece 500 may be accomplished by the rotating jaws 120 rotating. However, this arrangement may have a difference in displacement of the two rotating jaws 120, resulting in a situation where the first end of the clamped workpiece 500 is not coaxial with the axis of rotation of the rotating assembly, thereby affecting the machining accuracy.

It will be appreciated that at least two rotating jaws 120 are provided, a receiving space is formed between the rotating jaws for the workpiece 500 to pass through, and the degree of gathering between the rotating jaws is adjustable to adjust the size of the receiving space to accommodate workpieces 500 having different shank sizes. For example, as shown in fig. 5, 7 and 10, in the present embodiment, at least two rotating clamping jaws are provided, and a containing position is formed between the plurality of rotating clamping jaws, the workpiece 500 is arranged in the containing position in a penetrating manner, and the size of the containing position is adjusted due to the adjustable gathering degree of the plurality of rotating clamping jaws, so that the workpiece 500 with different handle sizes is adapted.

Specifically, in this embodiment, the shank of the workpiece 500 is rectangular, two rotating clamping jaws are disposed opposite to each other, and the distance between the two rotating clamping jaws is greater than the distance between two opposite faces of the shank of the workpiece 500 and is smaller than the diagonal length of a section perpendicular to the shank axis, so that the shank of the workpiece 500 can be pushed to rotate under the drive of the turntable 140.

Referring to fig. 1 and 11, a grinding machine apparatus according to a second aspect of the present utility model includes a grinding device 400 and a tap holder according to the first aspect of the present utility model, wherein the grinding device 400 includes a grooved grinding tool 411 and an external cylindrical grinding tool 412 coaxially disposed, and the grooved grinding tool 411 and the external cylindrical grinding tool 412 are disposed at one side of the tap holder.

It will be appreciated that the grinding machine apparatus includes the grinding device 400 and the tap holder according to the first embodiment, where the grinding device 400 is located at one side of the tap holder and includes the grooving grinder 411 and the excircle processing grinder 412 which are coaxially disposed, so that grooving and excircle processing of the workpiece 500 can be sequentially implemented without frequently replacing the grinder clamped in the grinding device 400, thereby improving processing efficiency, and improving processing quality by locating both ends of the workpiece 500 by the tap holder.

Specifically, the grinding device 400 includes a second rotary driving assembly 420, and the rotation axis of the output end of the second rotary driving assembly 420 is coaxially disposed with the slotting grinding tool 411 and the outer circle machining grinding tool 412, so as to implement rotary grinding of the slotting grinding tool 411 and the outer circle machining grinding tool 412.

It should be appreciated that such a grinding apparatus 400 also includes a feed drive assembly having an output end coupled to the grinding apparatus 400 or tap holder and configured to drive the grinding apparatus 400 and tap holder toward and away from each other to effect feed grinding of the workpiece 500.

It will be appreciated that the grinding apparatus 400 includes a locking assembly and a first spacer 432, the first spacer 432 is disposed between the grooving grinder 411 and the cylindrical machining grinder 412 and is used to adjust the distance between the grooving grinder 411 and the cylindrical machining grinder 412, and the locking assembly is used to lock the grooving grinder 411 and the cylindrical machining grinder 412. For example, as shown in fig. 11, in this embodiment, the grinding apparatus 400 further includes a locking assembly and a first spacer 432, the first spacer 432 is fixedly disposed between the grooved grinding tool 411 and the outer circle processing grinding tool 412, and the distance between the grooved grinding tool 411 and the outer circle processing grinding tool 412 is adjusted by replacing the first spacer 432 with different sizes, so as to process the workpiece 500 meeting different processing requirements, and in addition, the connection and fixation of the grooved grinding tool 411 and the outer circle processing grinding tool 412 are realized by the locking assembly.

It should be appreciated that the grinding apparatus 400 further includes a second spacer 433, the locking assembly includes a first flange 431 and a second flange 434, the first flange is fixedly connected to the output end of the second rotary driving assembly 420, the grooved grinding tool 411 and the cylindrical machining grinding tool 412 are locked between the first flange and the second flange, and in addition, the second spacer 433 is disposed at one end of the first flange and/or the second flange contacting the grinding tool, thereby reducing wear between the grinding tool and the locking assembly. One or more second spacers 433 may be provided.

The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the application and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Screw tap clamping device, its characterized in that includes:

The rotary positioning mechanism is used for positioning the first end of the workpiece and driving the workpiece to rotate;

The auxiliary positioning mechanism comprises a positioning piece and an installation piece, wherein a clamping position for clamping a workpiece is formed between the positioning piece and the rotary positioning mechanism, the auxiliary positioning mechanism is used for positioning the second end of the workpiece opposite to the first end, one end of the installation piece is connected with the positioning piece, the other end of the installation piece is provided with an avoidance groove, and the avoidance groove is used for accommodating an excircle machining grinding tool coaxially arranged with the slotting grinding tool when the slotting grinding tool is used for machining a thread groove on the workpiece.

2. The tap holder of claim 1, wherein the locating member is a first tip removably attached to a side of the mounting member facing the rotational locating mechanism.

3. The tap holder of claim 2, wherein the auxiliary positioning mechanism further comprises an adjustment assembly coupled to the mounting member for adjusting the coaxiality of the first tip with the rotational axis of the rotational positioning mechanism.

4. A tap holder as claimed in claim 3, wherein the adjustment assembly comprises a first adjustment member, a second adjustment member, a base, a first connection member and a second connection member, the mounting member is disposed on the first adjustment member, the first connection member is connected to the first adjustment member and the second adjustment member and is used for adjusting the relative positions of the first adjustment member and the second adjustment member in a first direction, and the second connection member is connected to the second adjustment member and the base and is used for adjusting the relative positions of the second adjustment member and the base in a second direction, and the first direction, the second direction and the rotation axis of the rotation positioning mechanism are perpendicular to each other.

5. The tap holder of claim 3, wherein the mounting member has a mounting hole, the first tip is mounted in the mounting hole, an arc portion is disposed at an end of the mounting member away from the positioning member, the adjusting assembly is correspondingly provided with an arc groove, the arc portion is embedded in the arc groove, and an arc surface of the arc portion is coaxially disposed with the mounting hole.

6. The tap holder of claim 1, wherein the rotational positioning mechanism comprises a second tip and a rotational assembly, the second tip is coaxially connected to the rotational assembly and is used for abutting and positioning the first end of the workpiece, the holding position is formed between the positioning member and the second tip, and the rotational assembly abuts against the peripheral surface of the workpiece and is used for driving the workpiece to rotate.

7. The tap holding device of claim 6, wherein the rotating assembly comprises a turntable and a rotating clamping jaw, the rotating clamping jaw and the second center are both connected to the turntable, and the rotating clamping jaw can drive the workpiece to synchronously rotate along with the second center under the driving of the turntable.

8. The tap holder of claim 7, wherein there are at least two rotating jaws, a receiving space for the workpiece to pass through is formed between the rotating jaws, and the degree of gathering between the rotating jaws is adjustable to adjust the size of the receiving space to accommodate the workpieces having different shank sizes.

9. A grinding machine apparatus comprising a grinding device and a tap holder according to any one of claims 1 to 8, said grinding device comprising said grooving grinder and said excircle machining grinder coaxially arranged, said grooving grinder and said excircle machining grinder being provided on one side of said tap holder.

10. The grinding machine apparatus defined in claim 9 wherein said grinding means includes a locking assembly and a first spacer, said first spacer being disposed between said grooved grinding wheel and said outer cylindrical machining grinding wheel and adapted to adjust the spacing between said grooved grinding wheel and said outer cylindrical machining grinding wheel, said locking assembly being adapted to lock said grooved grinding wheel and said outer cylindrical machining grinding wheel.