阅读说明：本技术 一种滑块入子的加工方法 (Machining method of slider insert ) 是由 孙连伟 李旦 章芬 于 2020-07-08 设计创作，主要内容包括：本发明提供一种滑块入子的加工方法,包括：根据滑块入子的设计尺寸,加工出滑块入子工件；将滑块入子工件置于磨床的夹具中进行固定；获取砂轮加工轨迹,并使磨床的砂轮按照砂轮加工轨迹对滑块入子工件进行二次加工,以去除滑块入子的内螺纹上的螺牙倒扣；其中,获取砂轮加工轨迹的步骤包括：建立滑块入子的分析模型；根据分析模型,计算出螺牙倒扣临界点的位置；根据螺牙倒扣临界点的位置,生成砂轮加工轨迹。本发明通过根据滑块入子的分析模型建立生成砂轮加工轨迹,并让磨床的砂轮按照建立的砂轮加工轨迹对滑块入子工件进行二次加工,以去除滑块入子工件内螺纹上的螺牙倒扣,从而避免倒扣拉伤产品外螺牙,方便产品离型。(The invention provides a method for processing a slider insert, which comprises the following steps: processing a slide block insert workpiece according to the design size of the slide block insert; placing the slide block insert workpiece in a fixture of a grinding machine for fixing; obtaining a grinding wheel machining track, and carrying out secondary machining on the slide block insert workpiece by a grinding wheel of a grinding machine according to the grinding wheel machining track so as to remove thread back-off on the internal thread of the slide block insert; the step of obtaining the grinding wheel machining track comprises the following steps: establishing an analysis model of the slider insert; calculating the position of a thread back-off critical point according to the analysis model; and generating a grinding wheel machining track according to the position of the thread back-off critical point. According to the invention, the grinding wheel machining track is established and generated according to the analysis model of the slide block insert, and the grinding wheel of the grinding machine carries out secondary machining on the slide block insert workpiece according to the established grinding wheel machining track so as to remove the thread reverse buckle on the internal thread of the slide block insert workpiece, so that the reverse buckle is prevented from damaging the external thread of the product, and the product is convenient to release.)

1. A method for processing a slide insert, the method comprising:

processing a slide block insert workpiece according to the design size of the slide block insert, wherein a semicircular hole is formed in the slide block insert, and an internal thread is formed in the inner wall of the semicircular hole;

placing the slide block insert workpiece in a fixture of a grinding machine for fixing;

obtaining a grinding wheel machining track, and performing secondary machining on the slide block insert workpiece by a grinding wheel of the grinding machine according to the grinding wheel machining track to remove the thread back-off on the internal thread;

the step of obtaining the grinding wheel machining track comprises the following steps:

establishing an analysis model of the slider insert according to the design size of the slider insert;

calculating the position of a thread back-off critical point of the internal thread according to an analysis model of the slider insert;

and generating the grinding wheel machining track according to the position of the thread back-off critical point.

2. The method for machining a slide insert according to claim 1, wherein the step of generating the grinding wheel machining trajectory based on the position of the thread back-off critical point includes:

establishing a grinding wheel track circle according to the position of the thread back-off critical point;

and generating the grinding wheel machining track according to the grinding wheel track circle and the thread pitch of the thread.

3. The method for machining the slide insert according to claim 2, wherein the step of performing secondary machining on the slide insert workpiece by using a grinding wheel of the grinding machine according to the grinding wheel machining track to remove the thread undercut on the internal thread comprises:

moving the grinding wheel to a thread back-off of the first thread on the first side of the internal thread for processing;

after the thread back-off of the first thread is processed, moving the grinding wheel by a thread pitch to process the thread back-off of the next thread;

after the thread back-off processing of all the threads on the first side of the internal thread is finished, moving the grinding wheel to the thread back-off processing of the second side of the internal thread, wherein the thread back-off processing modes of the first side and the second side of the internal thread are the same;

when the thread reverse buckle of each thread is machined, the grinding wheel runs by taking the grinding wheel track circle as a running track.

4. The method of claim 2, wherein the step of creating a grinding wheel trajectory circle based on the location of the thread back-off threshold comprises:

mirroring the thread back-off critical point by taking the parting surface of the slide block insert as a reference to obtain a mirror image point of the thread back-off critical point;

and establishing the grinding wheel track circle by taking the thread back-off critical point and the mirror image point as two points on the grinding wheel track circle.

5. The method of any one of claims 2 to 4, wherein the points on the grinding wheel locus circle are at the same height.

6. The method of claim 1, wherein the thread undercut threshold point is located at a vertical distance from the thread undercut threshold point to a parting plane of the slide insert.

7. The method for machining the slide block insert according to claim 6, wherein a vertical distance S from the thread back-off critical point to a parting plane of the slide block insert is calculated by the formula:

wherein A is a thread lead angle, r is the radius of a transition circle between the major diameter of the thread and the flat position, d is the radius of the major diameter circle of the thread, and l is the minimum distance between the flat position and the major diameter circle of the thread.

8. The method of claim 1, wherein the grinding wheel includes an upper conical surface and a lower conical surface on an outer periphery thereof, a taper angle of the upper conical surface and the lower conical surface is equal to a taper angle of the thread of the internal thread, and when the grinding wheel is disposed between two adjacent threads, the upper conical surface and the lower conical surface are in contact with surfaces of the two adjacent threads, respectively.

Technical Field

The invention relates to the technical field of dies, in particular to a method for processing a sliding block insert.

Background

Some injection molded products have external threads that are formed by two slide inserts. Specifically, as shown in fig. 1, a semicircular hole 11 is formed in the slider insert 10, and an internal thread 12 is formed on an inner wall of the semicircular hole 11, so that a complete screw hole is formed when the two slider insert inserts are assembled, and when a product is injection-molded, the internal thread in the screw hole forms a corresponding external thread on an outer wall of the product. For example, fig. 2 shows a lens barrel product in which the external thread of the lens barrel is split at the center of the product and the external threads on both sides of the parting line (center line) are formed by two sliders.

Because the clamping position of the slide block inserts at the two sides is easy to generate burrs, two flat positions are required to be cut at the parting line respectively on the two sides of the outer screw thread, and therefore, the slide block inserts are required to be cut at the corresponding positions to form the flat positions at the parting line of the outer screw thread naturally during the injection molding of the outer screw thread. As shown in fig. 1, both sides (a side and B side) of the internal thread 12 are provided with flat portions 13, however, due to the lead angle of the thread, the thread of the internal thread 12 on the slider insert 10 forms an inverse buckle 14 (similar to a slope) at the flat portions 13 at both sides, and the existence of the inverse buckle 14 causes problems of difficult product release, easy external thread pulling damage and the like, thereby affecting the product yield.

Disclosure of Invention

Based on the above, the invention aims to provide a method for processing a sliding block insert, so as to solve the technical problem that the reverse buckle on the inner screw thread of the sliding block insert in the prior art can strain the outer screw thread of a product.

According to the embodiment of the invention, the method for processing the slider insert comprises the following steps:

processing a slide block insert workpiece according to the design size of the slide block insert, wherein a semicircular hole is formed in the slide block insert, and an internal thread is formed in the inner wall of the semicircular hole;

placing the slide block insert workpiece in a fixture of a grinding machine for fixing;

obtaining a grinding wheel machining track, and performing secondary machining on the slide block insert workpiece by a grinding wheel of the grinding machine according to the grinding wheel machining track to remove the thread back-off on the internal thread;

the step of obtaining the grinding wheel machining track comprises the following steps:

establishing an analysis model of the slider insert according to the design size of the slider insert;

calculating the position of a thread back-off critical point of the internal thread according to an analysis model of the slider insert;

and generating the grinding wheel machining track according to the position of the thread back-off critical point.

Further, the step of generating the grinding wheel machining track according to the position of the thread back-off critical point includes:

establishing a grinding wheel track circle according to the position of the thread back-off critical point;

and generating the grinding wheel machining track according to the grinding wheel track circle and the thread pitch of the thread.

Further, the step of performing secondary processing on the slider insert workpiece by using a grinding wheel of the grinding machine according to the grinding wheel processing track to remove the thread undercut on the internal thread comprises:

moving the grinding wheel to a thread back-off of the first thread on the first side of the internal thread for processing;

after the thread back-off of the first thread is processed, moving the grinding wheel by a thread pitch to process the thread back-off of the next thread;

after the thread back-off processing of all the threads on the first side of the internal thread is finished, moving the grinding wheel to the thread back-off processing of the second side of the internal thread, wherein the thread back-off processing modes of the first side and the second side of the internal thread are the same;

when the thread reverse buckle of each thread is machined, the grinding wheel runs by taking the grinding wheel track circle as a running track.

Further, the step of establishing a grinding wheel track circle according to the position of the thread back-off critical point comprises the following steps:

mirroring the thread back-off critical point by taking the parting surface of the slide block insert as a reference to obtain a mirror image point of the thread back-off critical point;

and establishing the grinding wheel track circle by taking the thread back-off critical point and the mirror image point as two points on the grinding wheel track circle.

Further, each point on the grinding wheel locus circle is at the same height.

Further, the position of the thread back-off critical point is the vertical distance from the thread back-off critical point to the parting surface of the slide block insert.

Further, a calculation formula of a vertical distance S from the thread back-off critical point to the parting surface of the slider insert is as follows:

wherein A is a thread lead angle, r is the radius of a transition circle between the major diameter of the thread and the flat position, d is the radius of the major diameter circle of the thread, and l is the minimum distance between the flat position and the major diameter circle of the thread.

Further, the periphery of the grinding wheel comprises an upper conical surface and a lower conical surface, the taper angle of the upper conical surface and the taper angle of the lower conical surface are equal to the taper angle of the threads of the internal thread, and when the grinding wheel is arranged between two adjacent threads, the upper conical surface and the lower conical surface are respectively in contact with the surfaces of the two adjacent threads.

Compared with the prior art, the position of the thread back-off critical point is positioned through the analysis model of the slide block insert, the grinding wheel machining track is generated according to the position of the thread back-off critical point, the grinding wheel of the grinding machine carries out secondary machining on the slide block insert workpiece according to the grinding wheel machining track, so that the thread back-off on the internal thread of the slide block insert workpiece is removed, the situation that the back-off pulls the external thread of the product is avoided, and the product is convenient to release.

Drawings

FIG. 1 is a perspective view of a prior art slider insert;

fig. 2 is a structural view of a lens barrel in the related art;

FIG. 3 is a flow chart of a method of processing a slider insert according to a first embodiment of the present invention;

FIG. 4 is a flowchart illustrating an embodiment of obtaining a grinding wheel machining trajectory according to the present invention;

FIGS. 5-6 are schematic diagrams illustrating the derivation of the formula for locating the undercut critical point of the thread according to the embodiment of the present invention;

FIG. 7 is an illustration of a grinding wheel trace circle created according to an embodiment of the present invention;

FIG. 8 is an enlarged view taken at I of FIG. 7;

FIG. 9 is a flowchart illustrating a second exemplary embodiment of a slider insert according to the present invention;

FIGS. 10-11 are process explanatory views of a secondary machining of a slider insert according to an embodiment of the present invention;

fig. 12 is a perspective structural view of the slider insert after the secondary processing is completed according to the embodiment of the present invention;

fig. 13 is a diagram illustrating a structure of a grinding wheel according to an embodiment of the present invention.

Description of the main element symbols:

10. a slider insert; 11. a semicircular hole; 12. an internal thread; 13. flattening; 14. reversing; 20. and (5) grinding wheels.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" 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," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 3, a method for processing a slider insert according to a first embodiment of the present invention includes steps S10-S30, wherein:

and S10, processing a workpiece of the slide block insert according to the design size of the slide block insert, wherein the slide block insert is provided with a semicircular hole, and the inner wall of the semicircular hole is provided with an internal thread.

The design size of the slide block insert generally comprises the product size of the slide block insert, such as the length, the width and the height, the radius of a semicircular hole, the thread parameters of an internal thread and the like. It can be understood that a three-dimensional or two-dimensional model of the slider insert can be established according to the design size of the slider insert, and the slider insert workpiece can also be directly processed. It should be noted that the slide in-work piece processed in step S10 is identical to the existing slide in-work piece, so step S10 may be performed according to the existing slide in-work process, for this reason, the internal threads 12 of the slide in-work piece 20 processed in step S10 form the undercuts 14 at the flat portions 13 on both sides, and the specific structure of the slide in-work piece is shown in fig. 1. In specific implementation, the two slide block insert parts are preferably assembled to process internal threads, so that a complete threaded hole can be formed by closing the die behind the two slide block insert parts, and a continuous and complete external thread product can be processed by the slide block insert parts.

And step S20, placing the slide block insert workpiece in a clamp of a grinding machine for fixing.

And step S30, obtaining a grinding wheel machining track, and enabling a grinding wheel of the grinding machine to carry out secondary machining on the slide block insert workpiece according to the grinding wheel machining track so as to remove the thread back-off on the internal thread.

In this embodiment, a coordinate grinder is specifically used to perform secondary processing on the slider insert workpiece to remove the undercut on the slider insert workpiece; specifically, the slide block insert workpiece is firstly placed in a fixture of a grinding machine for fixing, and then the inverted buckle on the slide block insert workpiece is ground by using a grinding wheel of the grinding machine.

It can be understood that before the slider insert workpiece is machined by the grinding machine, a grinding wheel machining track of the grinding machine needs to be acquired, so that the grinding wheel can be machined according to the grinding wheel machining track, and therefore the reverse buckle on the slider insert workpiece is accurately removed. In specific implementation, the grinding wheel machining track can be directly established and generated on the grinding machine, or the grinding wheel machining track can be generated firstly (for example, the grinding wheel machining track is established on a computer firstly), and then the grinding wheel machining track data is introduced into the grinding machine.

By way of example and not limitation, referring to fig. 4, an alternative specific implementation of the step of obtaining a grinding wheel machining trajectory is shown, which includes the following steps:

step S31, establishing an analysis model of the slider insert according to the design size of the slider insert;

step S32, calculating the position of the thread back-off critical point of the internal thread according to the analysis model of the slider insert;

and step S33, generating the grinding wheel machining track according to the position of the thread back-off critical point.

When the grinding wheel machining track is obtained specifically, an analysis model of the sliding block insert is established according to the design size, the analysis model can be a three-dimensional model or a two-dimensional model, then the position of a thread back-off critical point of internal threads on the sliding block insert is calculated according to the established analysis model of the sliding block insert, and finally the grinding wheel machining track is generated according to the position of the thread back-off critical point.

In this embodiment, the position of the critical point of thread back-off is a vertical distance from the critical point of thread back-off to the parting plane of the slider insert, that is, the critical point of thread back-off is located by using the vertical distance (also Y-axis dimension) from the critical point of thread back-off to the parting plane of the slider insert.

The calculation formula of the vertical distance S from the thread back-off critical point to the parting surface of the slider insert is as follows:

wherein A is a thread lead angle, r is the radius of a transition circle between the major diameter of the thread and the flat position, d is the radius of the major diameter circle of the thread, and l is the minimum distance between the flat position and the major diameter circle of the thread.

Referring to fig. 5-6, the derivation of the above equation is shown: firstly, assuming that the thread back-off critical point is at the position of point a in fig. 6, the vertical distance S from point a to the parting plane is L + H, where H is the flat length, and it can be obviously deduced from fig. 5 thatr, d and Δ l can all be obtained from the design size of the slider insert, so the flat bit length H can be calculated by a formula. Referring to fig. 6, L ═ r × sinA, a is a lead angle, and can be obtained from the design size of the slider insert, or the lead angle a can be calculated by the following formula:

wherein, P is the screw pitch, and the screw pitch is the distance between two adjacent threads, can obtain from the design size of slider income son. L can also be calculated by a formula. When both L + H are known, the vertical distance S from the point a to the parting plane is obtained, and the actual position of the thread back-off critical point a is located.

It should be noted that the position of the critical point of thread back-off is also the position of the curve of thread equal inclination; the back-off of the thread of the internal thread only exists from the back-off critical point of the thread to the parting surface of the slider insert (namely, outside the constant slope curve), and the back-off does not exist from the back-off critical point of the thread to the inner part (far away from the parting surface, namely, inside the constant slope curve). And because the two ends of the thread of the internal thread are provided with the flat positions, the two ends of the thread of the internal thread are provided with back-off critical points, and the back-off critical points at the two ends are symmetrically arranged relative to the central line of the internal thread. Therefore, the position of the thread back-off critical point is obtained through positioning, and the position of the thread back-off can be determined.

Specifically, the step of generating the grinding wheel machining trajectory according to the position of the thread back-off critical point specifically includes:

establishing a grinding wheel track circle according to the position of the thread back-off critical point;

and generating the grinding wheel machining track according to the grinding wheel track circle and the thread pitch of the thread.

The grinding wheel track circle is a track circle which runs when the grinding wheel is machined, the circle center of the grinding wheel track circle is the grinding wheel center, and the circumference of the grinding wheel track circle is the grinding wheel periphery; in specific implementation, the grinding wheel trajectory circle needs to satisfy the following three conditions: the grinding wheel track circle is smaller than the thread major diameter circle, namely the grinding wheel track circle is required to be positioned within the thread major diameter circle, so that the grinding wheel is prevented from abrading the thread major diameter part when the grinding wheel is used for grinding the inverted buckle, and the complete structure of the thread is prevented from being damaged; secondly, the grinding wheel track circle needs to cover the section of the screw thread from the screw thread back-off critical point to the parting surface of the slide block insert, namely the grinding wheel track circle needs to cover the whole screw thread back-off, so that the grinding wheel can grind off one part of the whole screw thread back-off; and (III) each point on the grinding wheel track circle is positioned at the same height, namely the grinding wheel track circle is positioned on a horizontal plane and cannot have an inclination angle, so that the grinding wheel can be ensured to horizontally grind the screw tooth reverse buckle, and the reverse buckle on the screw tooth is really removed.

By way of example and not limitation, the step of establishing a grinding wheel trajectory circle according to the position of the thread back-off critical point specifically includes:

mirroring the thread back-off critical point by taking the parting surface of the slide block insert as a reference to obtain a mirror image point of the thread back-off critical point;

and establishing the grinding wheel track circle by taking the thread back-off critical point and the mirror image point as two points on the grinding wheel track circle.

As shown in fig. 7-8, after the position of the point a is determined, the point a is mirrored by using the parting surface of the slider insert as a reference to obtain a mirror point B of the thread back-off critical point a, and the grinding wheel trajectory circle can be established when the positions of two points on the circumference of the grinding wheel trajectory circle are known. Alternatively, a point on the parting surface of the sliding block insert between the major diameter circle and the flat position of the screw thread, such as a point C in FIG. 8, can be selected, and then the grinding wheel locus circle can be established according to the A, B points and the point C. Or, in some optional embodiments, the grinding wheel outside diameter circle (outer peripheral surface) model may be established first, and then after determining A, B two points, the grinding wheel outside diameter circle model is called and moved until the grinding wheel outside diameter circle model moves to satisfy the above conditions (one) to (two), and in addition, the grinding wheel outside diameter circle model and the position thereof form the grinding wheel trajectory circle. It should be noted that the point B of the mirror image is also the critical point of thread back-off on the other slide insert, for example, the first slide insert and the second slide insert are two slide inserts that are assembled, and assuming that the critical point of thread back-off on the first slide insert is point a, since the first slide insert and the second slide insert are completely mirror images about the parting plane, the point B of the mirror image obtained by mirroring the parting plane at point a is also the critical point of thread back-off on the second slide insert. Therefore, the grinding wheel track circle established based on the mode can ensure that: the grinding wheel track circle is positioned within the thread major diameter circle, and meanwhile, the grinding wheel track circle can just cover the whole thread back-off part.

By way of example and not limitation, referring to fig. 9, an alternative specific implementation manner of the step of performing secondary processing on the slider insert workpiece by using the grinding wheel of the grinding machine according to the grinding wheel processing track to remove the thread undercut on the internal thread includes the following steps:

step S34, moving the grinding wheel to the thread back-off of the first thread on the first side of the internal thread for processing;

step S35, after the thread back-off processing of the first thread is finished, moving the grinding wheel by a thread pitch to process the thread back-off of the next thread;

step S36, after the thread back-off processing of all the threads on the first side of the internal thread is finished, moving the grinding wheel to the thread back-off processing of the second side of the internal thread, wherein the processing modes of the thread back-off processing of the first side and the second side of the internal thread are the same;

when the thread reverse buckle of each thread is machined, the grinding wheel runs by taking the grinding wheel track circle as a running track.

Referring to fig. 10-11, the specific process of performing the secondary processing on the slider insert workpiece includes: firstly, moving the grinding wheel 20 to the height of a first thread (the topmost thread or the bottommost thread) on the first side (namely side A) of the internal thread 12, then horizontally moving the grinding wheel (namely, horizontally feeding) and ensuring that the grinding wheel is horizontally placed so as to enable the center of the grinding wheel 20 to coincide with the center of an established grinding wheel track circle, then operating the grinding wheel 20, and enabling the rotation track of the grinding wheel to coincide with the grinding wheel track circle at the moment, so that the thread back-off 14 of the first thread on the first side of the internal thread 12 is removed (as shown in fig. 10);

after the thread back-off processing of the first thread is finished, horizontally withdrawing the grinding wheel 20, enabling the center of the grinding wheel to coincide with the center of the internal thread 12, then moving the grinding wheel 20 by a thread pitch (when the first thread is the topmost thread, the grinding wheel moves downwards by a thread pitch at the time; when the first thread is the bottommost thread, the grinding wheel moves upwards by a thread pitch at the time), because the center of the grinding wheel 20 coincides with the center of the internal thread 12, the grinding wheel does not touch the thread in the moving process, the grinding wheel 20 moves to the height of the second thread on the first side of the internal thread 12 at the time, then feeding and running the grinding wheel in the same manner to grind off the back-off on the second thread on the first side of the internal thread 12 (as shown in fig. 11), and so on until the thread back-off processing of all the threads on the first side of the internal thread 12 is finished;

after the thread back-off processing of all the threads on the first side of the internal thread 12 is completed, the grinding wheel is moved to the thread back-off processing of the second side (i.e., the side B) of the internal thread in the same manner, i.e., the thread back-off processing of the first thread on the second side of the internal thread is performed first, and the grinding wheel is moved by one thread pitch after each processing so as to process the thread back-off processing of each thread on the second side of the internal thread. The structure of the slider insert after the secondary processing is shown in fig. 12. In addition, when the first thread on the first side is selected as the topmost thread, the first thread on the second side is preferably the bottommost thread; or when the first thread on the first side is selected as the bottommost thread, the first thread on the second side is preferably the topmost thread, so that the grinding wheel can horizontally move to process the first thread on the second side when the last thread on the first side is processed, the moving path of the grinding wheel is shortened, and the processing efficiency is improved.

That is, the grinding wheel moving manner is fixed in the whole process of machining the whole thread back-off on the slider insert (as described above), so that after the grinding wheel trajectory circle and the thread pitch of the internal thread are obtained, the grinding wheel machining trajectory is generated by combining the fixed moving manner of the grinding wheel.

Referring to fig. 13, an alternative grinding wheel structure is shown, in which the periphery of the grinding wheel 20 includes an upper conical surface 21 and a lower conical surface 22, the taper angles of the upper conical surface 21 and the lower conical surface 22 are equal to the taper angle of the threads of the internal thread 12, and when the grinding wheel 20 is placed between two adjacent threads, the upper conical surface 21 and the lower conical surface 22 respectively contact the surfaces of two adjacent threads, so as to simultaneously process the undercuts of two adjacent threads. For example, referring to fig. 11, when the grinding wheel structure in fig. 13 is used to back-off the second thread on the first side of the slider insert 20, the upper conical surface 21 of the grinding wheel 20 processes the back-off on the lower surface of the first thread (i.e., the first thread), and the lower conical surface 22 of the grinding wheel 20 processes the back-off on the upper surface of the second thread, thereby improving the back-off removal efficiency.

In summary, in the method for machining the slider insert according to the above embodiment of the present invention, the position of the thread undercut critical point is located through the analysis model of the slider insert, the grinding wheel machining track is generated according to the position of the thread undercut critical point, and the grinding wheel of the grinding machine performs secondary machining on the slider insert workpiece according to the grinding wheel machining track to remove the thread undercut on the internal thread of the slider insert workpiece, so as to prevent the thread on the product from being damaged by undercut, and facilitate the release of the product.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.