A grinding jig for a cemented carbide milling cutter blank
By designing a grinding fixture for carbide end mill blanks, high-precision positioning and efficient clamping are achieved using locating pins and locating pressure plates. This solves the problems of low grinding efficiency and significant safety hazards in existing technologies for carbide end mill blanks, thereby improving processing efficiency and safety.
Patent Information
- Application Number
- CN202311160596.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-11
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2043-09-11
AI Technical Summary
Existing technologies are insufficient for effective face milling processes, and are also insufficient for face aluminum processing. Existing technologies are insufficient for efficiently and safely grinding standard carbide end mill blanks into non-standard carbide end mills, resulting in high processing costs, low efficiency, and significant safety hazards.
A grinding fixture for carbide end mill blanks has been designed, comprising a locating pin and a locating plate, which can accurately position and efficiently clamp the carbide end mill blanks, and perform grinding through the feed and rotary axes of the grinding machine, ensuring the safety of the grinding process.
It achieves high-precision positioning and efficient clamping, reduces processing costs, improves processing efficiency, reduces safety hazards, and enhances the processing quality and safety of non-standard carbide end mills.
Smart Images
Figure CN117325079B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cutting tools, and more particularly, to a grinding fixture for a carbide milling cutter blank. Background Technology
[0002] In the field of machining, face milling is generally used for machining surfaces. Face milling typically employs face milling cutters, which generally have a large diameter and utilize a large number of cutting inserts, resulting in a high-efficiency cutting edge. Cutting inserts are generally classified into high-speed steel inserts, carbide inserts, CBN inserts, and ceramic inserts, among others. Due to the outstanding characteristics of carbide inserts, they are widely used in face milling.
[0003] Due to the size limitations of the cutter head, non-standard carbide end mills are used in the face milling of steering knuckle parts. However, non-standard carbide end mills require separate mold manufacturing, have low versatility, and their cost is generally more than three times that of standard end mills. This results in high processing costs for steering knuckle parts and low market competitiveness of the products.
[0004] To address this challenge, purchasing standard carbide end mill blanks of similar size and grinding them to the required insert size can significantly reduce processing costs. However, existing clamping tools generally suffer from poor positioning accuracy, low clamping efficiency, and operational safety hazards, resulting in low insert processing efficiency and insufficient insert supply, which greatly restricts the processing efficiency of steering knuckle parts. Summary of the Invention
[0005] In view of this, the present invention provides a grinding fixture for carbide end mill blanks, which has the advantages of high positioning accuracy and high clamping efficiency. The positioning pin can firmly fix the carbide end mill blank, and the positioning plate can drive the carbide end mill blank to rotate so that the blank is at a preset angle, thereby grinding at that angle and grinding the standard carbide end mill blank into the required non-standard insert specifications.
[0006] The objective of this invention is achieved through the following technical solution:
[0007] A grinding fixture for a carbide end mill blank includes a base and a side-edge grinding clamping assembly disposed on the base. The side-edge grinding clamping assembly includes a positioning center hole carved into the upper surface of the base, a positioning pin for clamping the carbide end mill blank, and a positioning pressure plate for positioning the angle of the carbide end mill blank. The positioning pin passes through the carbide end mill blank and is inserted into the positioning center hole. The positioning pressure plate has a positioning groove, and one side edge of the carbide end mill blank extends into the positioning groove and is in close contact with the positioning groove.
[0008] It features high positioning accuracy and high clamping efficiency. The locating pins firmly fix the carbide end mill blank, and the locating plate drives the carbide end mill blank to rotate, positioning it at a preset angle for grinding. Specifically, the grinding fixture is fixedly mounted on a grinding machine, and the feed and rotary axes of the grinding machine enable the feeding and grinding of the carbide end mill blank, grinding the side edges of the carbide end mill blank, and grinding a standard carbide end mill blank into the required non-standard insert specifications.
[0009] Preferably, the positioning groove is located on one side of the positioning plate, and a first mounting hole is provided on the other side of the positioning plate. An elastic element is provided in the first mounting hole, and the elastic element pushes the positioning plate to move towards the positioning center hole.
[0010] The elastic element can be a compression spring. Under the action of the compression spring, the positioning plate is pushed to move towards the blank to be processed. After the positioning plate contacts the blank to be processed, it continues to push the blank to be processed. Since the blank to be processed is under the action of the positioning pin at this time, the blank to be processed will rotate, thereby realizing the angular positioning of the blank to be processed.
[0011] Preferably, one end of the elastic element is connected to the positioning pressure plate and the other end is connected to the support block. The support block is installed on the base body, and a second mounting hole is provided on one side of the support block. The elastic element is disposed in the second mounting hole.
[0012] The support block is locked to the base with screws. The first mounting hole and the second mounting hole have the same axis. The elastic element is also located on the same axis, which can push the positioning plate to move, so as to realize the rapid angular positioning of the blank to be processed.
[0013] Preferably, the positioning plate has a waist-shaped groove, and a locking screw is inserted into the waist-shaped groove and the locking screw is locked to the base.
[0014] After angular positioning is completed, the blank to be processed can be positioned and clamped by tightening the locking screw.
[0015] Preferably, the thickness of the positioning groove is equal to the thickness of the carbide end mill blank.
[0016] To ensure that the positioning and clamping of the blank to be processed is secure enough, the thickness of the positioning groove is consistent with the thickness of the carbide end mill blank.
[0017] Preferably, the upper surface of the base is provided with a side-edge grinding groove, and the positioning center hole is provided in the side-edge grinding groove.
[0018] The blank to be processed is located in the side grinding groove. The side grinding groove partially surrounds the blank to be processed, which improves the reliability of the positioning and clamping of the blank to be processed. At the same time, it can also wrap the blank to be processed, preventing the blank from scratching personnel and reducing the safety hazards of personnel operation.
[0019] Preferably, it also includes an R-angle grinding clamping assembly disposed on the base, the R-angle grinding clamping assembly including a cutting tool clamping plate for pressing the carbide milling cutter blank against the upper surface of the base.
[0020] The insert clamp can firmly fix the carbide end mill blank, so that the radius angle can be ground. Then, the grinding fixture is fixedly installed on the grinding machine. The feed and rotary axes of the grinding machine can realize the feed grinding of the carbide end mill blank. By grinding the radius angle of the carbide end mill blank, the standard carbide end mill blank can be ground into the required non-standard insert specifications.
[0021] Preferably, the upper surface of the base is provided with an R-angle grinding groove, and the carbide milling cutter blank is located in the R-angle grinding groove.
[0022] The blank to be processed is located in the R-angle grinding groove. The R-angle grinding groove partially surrounds the blank to improve the reliability of the positioning and clamping of the blank. At the same time, it can also wrap the blank to prevent the blank from scratching personnel and reduce the safety hazards of personnel operation.
[0023] Preferably, an R-angle avoidance slope is provided at the edge of the seat body, and the R-angle avoidance slope is located below the R-angle grinding groove.
[0024] The R-angle avoidance slope provides more R-angle grinding space for the blank to be processed, avoiding spatial interference.
[0025] Preferably, the blade pressure plate has a mounting groove, and a locking screw is inserted into the mounting groove and secured to the base.
[0026] After the blank to be processed is placed into the base, the blank can be positioned and clamped by tightening the locking screw.
[0027] The advantages of this invention compared to the prior art are:
[0028] The grinding fixture for carbide end mill blanks of the present invention has the advantages of high positioning accuracy and high clamping efficiency. The positioning pins firmly fix the carbide end mill blank, and the positioning pressure plate drives the carbide end mill blank to rotate, positioning it at a preset angle for grinding. Specifically, the grinding fixture is fixedly installed on a grinding machine, and the feed and rotary axes of the grinding machine enable the feeding and grinding of the carbide end mill blank, grinding the side edges of the carbide end mill blank, and grinding a standard carbide end mill blank into the required non-standard insert specifications. Attached Figure Description
[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a structural diagram of a grinding fixture for a carbide end mill blank according to an embodiment of the present invention.
[0031] Figure 2 This is a structural diagram of a grinding fixture for a carbide end mill blank according to an embodiment of the present invention, from another perspective.
[0032] Figure 3 This is a top view of a grinding fixture for a carbide end mill blank according to an embodiment of the present invention.
[0033] Figure 4 This is a cross-sectional view of a grinding fixture for a carbide end mill blank according to an embodiment of the present invention. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0038] The technical solutions in this application will now be described with reference to the accompanying drawings.
[0039] This embodiment provides a grinding fixture for a carbide end mill blank, including a base 100 and a side edge grinding clamping assembly 200 disposed on the base 100. The side edge grinding clamping assembly 200 includes a positioning center hole 210 carved into the upper surface of the base 100, a positioning pin 220 for clamping the carbide end mill blank, and a positioning pressure plate 230 for positioning the angle of the carbide end mill blank. The positioning pin 220 passes through the carbide end mill blank and is inserted into the positioning center hole 210. The positioning pressure plate 230 has a positioning groove 231 carved into it. One side edge of the carbide end mill blank extends into the positioning groove 231 and is tightly attached to the positioning groove 231.
[0040] It features high positioning accuracy and high clamping efficiency. The positioning pin 220 can firmly fix the carbide end mill blank, and the positioning plate 230 can drive the carbide end mill blank to rotate, so that the blank is at a preset angle, thereby allowing grinding at that angle. Specifically, the grinding fixture is fixedly installed on the grinding machine, and the feed and rotary axes of the grinding machine can realize the feed grinding of the carbide end mill blank, grinding the side edge of the carbide end mill blank, and grinding the standard carbide end mill blank into the required non-standard insert specifications.
[0041] The positioning groove 231 is located on one side of the positioning pressure plate 230, and the other side of the positioning pressure plate 230 is provided with a first mounting hole 232. An elastic element 240 is provided in the first mounting hole 232, and the elastic element 240 pushes the positioning pressure plate 230 to move towards the positioning center hole 210.
[0042] The elastic element 240 can be a compression spring. Under the action of the compression spring, the positioning plate 230 is pushed to move towards the blank to be processed. After the positioning plate 230 contacts the blank to be processed, it continues to push the blank to be processed. Since the blank to be processed is under the action of the positioning pin 220 at this time, the blank to be processed will rotate, thereby realizing the angular positioning of the blank to be processed.
[0043] One end of the elastic element 240 is connected to the positioning pressure plate 230 and the other end is connected to the support block 250. The support block 250 is installed on the base 100. A second mounting hole 251 is provided on one side of the support block 250, and the elastic element 240 is disposed in the second mounting hole 251.
[0044] The support block 250 is locked to the base 100 by screws. The first mounting hole 232 and the second mounting hole 251 have the same axis. The elastic element 240 is also located on the same axis, which can push the positioning plate 230 to move, so as to realize the rapid angular positioning of the blank to be processed.
[0045] The positioning plate 230 has a waist-shaped groove 233, and a locking screw 234 is locked into the waist-shaped groove 233, which is then locked to the base 100.
[0046] After angular positioning is completed, the blank to be processed can be positioned and clamped by tightening the locking screw 234.
[0047] The thickness of the positioning groove 231 is equal to the thickness of the carbide end mill blank.
[0048] To ensure that the positioning and clamping of the blank to be processed is secure enough, the thickness of the positioning groove 231 is consistent with the thickness of the carbide end mill blank.
[0049] The upper surface of the base 100 is provided with a side edge grinding groove 110, and the positioning center hole 210 is provided in the side edge grinding groove 110.
[0050] The blank to be processed is located in the side grinding groove 110. The side grinding groove 110 partially surrounds the blank to be processed, which improves the reliability of the positioning and clamping of the blank to be processed. At the same time, it can also wrap the blank to be processed to avoid the blank from scratching personnel and reduce the safety hazards of personnel operation.
[0051] It also includes an R-angle grinding clamping assembly 300 disposed on the base 100, the R-angle grinding clamping assembly 300 including a cutting tool clamping plate 310 for pressing the carbide milling cutter blank against the upper surface of the base 100.
[0052] The insert clamping plate 310 can firmly fix the carbide end mill blank, thereby grinding its radius angle. Then, the grinding fixture is fixedly installed on the grinding machine. The feed and rotary axes of the grinding machine can realize the feed grinding of the carbide end mill blank. By grinding the radius angle of the carbide end mill blank, the standard carbide end mill blank is ground into the required non-standard insert specifications.
[0053] The upper surface of the base 100 is provided with an R-angle grinding groove 120, and the carbide end mill blank is located in the R-angle grinding groove 120.
[0054] The blank to be processed is located in the R-angle grinding groove 120. The R-angle grinding groove 120 partially surrounds the blank to be processed, which improves the reliability of the positioning and clamping of the blank to be processed. At the same time, it can also wrap the blank to be processed to avoid the blank scratching personnel and reduce the safety hazards of personnel operation.
[0055] The edge of the base 100 is provided with a radius-angle clearance slope 320, which is located below the radius-angle grinding groove 120.
[0056] The 320° radius avoidance slope provides more space for the radius grinding of the blank, thus avoiding spatial interference.
[0057] The blade pressure plate 310 has a mounting groove 311, and a locking screw 312 is inserted into the mounting groove 311. The locking screw 312 is locked to the base 100.
[0058] After the blank to be processed is placed into the base 100, the blank can be positioned and clamped by locking the locking screw 312.
[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grinding jig for a cemented carbide milling insert blank, c h a r a c t e r i s e d in that The utility model relates to a side edge grinding clamping assembly, which comprises a locating center hole, a locating pin for clamping a carbide milling blade blank and a locating pressing plate for locating the angle of the carbide milling blade blank. The locating pressing plate is provided with a first mounting hole on the other side, and an elastic member is arranged in the first mounting hole to push the locating pressing plate to move towards the locating center hole. The locating pressing plate is provided with a waist-shaped groove, and a locking screw is locked in the waist-shaped groove. The upper surface of the seat is provided with a side edge grinding groove, and the locating center hole is arranged in the side edge grinding groove.
2. A grinding jig for cemented carbide milling insert blanks according to claim 1, characterized in that One end of the elastic member is connected with the locating pressing plate, and the other end is connected with a supporting block.
3. A grinding jig for cemented carbide milling insert blanks according to claim 1, characterized in that The thickness of the locating groove is equal to the thickness of the carbide milling blade blank.
4. A grinding jig for cemented carbide milling insert blanks according to claim 1, characterized in that The utility model also relates to an R-angle grinding clamping assembly, which comprises a blade pressing plate for pressing the carbide milling blade blank on the upper surface of the seat.
5. A grinding jig for cemented carbide milling insert blanks according to claim 4, characterized in that The upper surface of the seat is provided with an R-angle grinding groove, and the carbide milling blade blank is arranged in the R-angle grinding groove.
6. A grinding jig for cemented carbide milling insert blanks according to claim 5, characterized in that An R-angle avoiding slope is arranged at the edge of the seat and located below the R-angle grinding groove.
7. A grinding jig for cemented carbide milling insert blanks according to claim 4, characterized in that The blade pressing plate is provided with a mounting groove, and a locking screw is locked in the mounting groove.
Citation Information
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