CN110640558A - End milling cutter sharpening fixture - Google Patents
End milling cutter sharpening fixture Download PDFInfo
- Publication number
- CN110640558A CN110640558A CN201911095527.6A CN201911095527A CN110640558A CN 110640558 A CN110640558 A CN 110640558A CN 201911095527 A CN201911095527 A CN 201911095527A CN 110640558 A CN110640558 A CN 110640558A
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- China
- Prior art keywords
- supporting plate
- end mill
- base
- middle supporting
- layer board
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
- B24B3/021—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of milling cutters with helical cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses an end mill sharpening fixture, and belongs to the technical field of end mill fixtures. The fixture comprises a base, a middle supporting plate, a small supporting plate and a cutter clamping component, wherein one side of the middle supporting plate is connected with the base in a rotating mode, the other side of the middle supporting plate is connected with the base through a locking component A, one side of the small supporting plate is connected with the middle supporting plate in a rotating mode, the other side of the small supporting plate is connected with the middle supporting plate through a locking component B, core rods are arranged at the bottoms of the middle supporting plate and the small supporting plate, a core rod accommodating groove and a cushion block accommodating groove are arranged at the positions, corresponding to the core rods, of the top surface of the base and the top surface of the middle supporting plate, the cutter clamping. After the edge grinding fixture is adjusted and fixed on the working table surface of the grinding machine, the grinding work of the back angles or the edge inclination angles of the cutting edges of the end milling cutter can be completed in sequence through the grinding machine, and the edge inclination angles and the back angles of the end milling cutter after edge grinding are good in consistency.
Description
Technical Field
The invention relates to an end mill cutter grinding clamp, and belongs to the technical field of end mill cutters.
Background
At present, a universal knife sharpener is mainly used for sharpening the end mill. However, the angle adjustment of the end mill mainly depends on the experiences of naked eyes and operators, so that the consistency of the inclination angle and the back angle of the sharpening back edge of the end mill is poor; the grinding quantity of each cutting edge grinding is less related to the operation strength and experience of operators, the cutting edge grinding is difficult to be symmetrical, and the height consistency of the cutting edges needs to be further improved.
Disclosure of Invention
In order to solve the technical problem, the invention provides an edge grinding clamp for an end mill.
The invention is realized by the following technical scheme:
the utility model provides an end mill sharpening anchor clamps, includes base, well layer board, little layer board and cutter clamping component, one side and the base of well layer board are rotated and are connected, and the opposite side passes through locking Assembly A and is connected with the base, one side and the well layer board of little layer board are rotated and are connected, and the opposite side passes through locking Assembly B and is connected with well layer board, the bottom of well layer board and little layer board all is equipped with the plug, the top surface of base and well layer board all is equipped with plug holding tank and cushion standing groove in the position corresponding with the plug, cutter clamping component rotates with little layer board to be connected, the cover is equipped with angle measurement subassembly on the cutter clamping component.
The end mill sharpening fixture further comprises a cushion block, and the cushion block is placed in the cushion block placing groove.
The middle supporting plate is rotatably connected with the base through a cylindrical pin A, and the small supporting plate is rotatably connected with the middle supporting plate through a cylindrical pin B.
The central line of the cylindrical pin A is parallel to the central line of the core rod at the bottom of the middle supporting plate, and the two central lines are both positioned on the bottom surface of the middle supporting plate.
The central line of the cylindrical pin B is parallel to the central line of the core rod at the bottom of the small supporting plate, and the two central lines are both positioned on the bottom surface of the small supporting plate.
The shape and the size of the locking component B are consistent with those of the locking component A; the locking component A is positioned at the opposite side of the rotary joint of the middle supporting plate and the base, and the locking component B is positioned at the opposite side of the rotary joint of the small supporting plate and the middle supporting plate.
The locking assembly A comprises a double lug plate A, a double lug plate B and a screw rod, the lower end of the screw rod is rotatably connected with the double lug plate A through a cylindrical pin C, and the upper end of the screw rod is locked on the double lug plate B through a butterfly nut.
The top of the small supporting plate is provided with a groove A, the bottom of the groove A is coaxially provided with a groove B, and the groove B is coaxially provided with a stepped shaft; the bottom of the groove A is detachably connected with a check ring A, and the stepped shaft is detachably connected with a check ring B.
The tool clamping component comprises a tool rest seat, a chuck and a locking nut, the tool rest seat is sleeved on the chuck, the locking nut is in threaded connection with the tool rest seat, two T-shaped screws are arranged on the tool rest seat side by side, and the upper ends of the T-shaped screws are in threaded connection with a compression nut.
The angle measuring component is a dial, and the small supporting plate is provided with an indexing disc at a position corresponding to the dial.
The invention has the beneficial effects that: after the sharpening fixture is adjusted and fixed on the working table surface of the grinding machine, sharpening work of the back angle or the edge inclination angle of each cutting edge of the end milling cutter can be completed in sequence through the grinding machine, and the edge inclination angle and the back angle of the end milling cutter after sharpening are good in consistency. The grinding quantity of each cutting edge grinding machine can be accurately controlled by the grinding machine, and the cutting edges are good in symmetry and high-low consistency. The numerical values of the dial and the index plate can be referred to index the end mill so as to ensure the centering of the edge of the end mill after sharpening. The cutting edges of the end mill after sharpening participate in cutting at the same time, the abrasion speed of the cutting edges is consistent, the probability of edge jumping and breakage of the end mill is reduced, the processing performance and the durability of the end mill are guaranteed, and the service life of the end mill is prolonged; in the cutting process, the cutter changing times and the cutter sharpening times of the end mill are reduced, and the processing efficiency is improved.
Drawings
FIG. 1 is a schematic illustration of an explosive structure according to the present invention;
FIG. 2 is a schematic view of an assembly structure of the present invention, wherein an included angle between the small supporting plate, the middle supporting plate and the base is 0 degree;
FIG. 3 is a schematic view of an assembly structure of the present invention, in which an included angle between the small supporting plate, the middle supporting plate and the base is not equal to 0 degree;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is a schematic view of the end face of the end mill;
FIG. 6 is a schematic diagram of the sharpening of the edge inclination of the end mill;
FIG. 7 is a schematic view of the grinding of the back angle of an end mill.
In the figure: 1-base, 2-cylindrical pin A, 3-cylindrical pin B, 4-retainer ring A, 5-retainer ring B, 6-dial, 7-tool rest base, 8-chuck, 9-locking nut, 10-compression nut, 11-T-shaped screw, 12-graduated disk, 13-small supporting plate, 14-butterfly nut, 15-washer, 16-core rod, 17-double-lug plate B, 18-double-lug plate A, 19-cylindrical pin C, 20-screw, 21-middle supporting plate, 22-cushion block, 23-bearing, 24-end mill and 25-grinding wheel.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 7, the end mill sharpening fixture of the present invention includes a base 1, a middle supporting plate 21, a small supporting plate 13 and a tool clamping member, one side of the middle supporting plate 21 is rotatably connected to the base 1, the other side is connected to the base 1 through a locking assembly a, one side of the small supporting plate 13 is rotatably connected to the middle supporting plate 21, the other side is connected to the middle supporting plate 21 through a locking assembly B, core rods 16 are mounted at the bottoms of the middle supporting plate 21 and the small supporting plate 13, core rod receiving grooves and cushion block placing grooves are machined at positions corresponding to the core rods 16 on the top surfaces of the base 1 and the middle supporting plate 21, the tool clamping member is rotatably connected to the small supporting plate 13, and an angle measuring assembly is sleeved on the tool clamping member.
The end mill sharpening fixture further comprises a cushion block 22, and the cushion block 22 is placed in the cushion block placing groove.
The middle supporting plate 21 is rotatably connected with the base 1 through a cylindrical pin A2, and the small supporting plate 13 is rotatably connected with the middle supporting plate 21 through a cylindrical pin B3.
The center line of the cylindrical pin A2 is parallel to the center line of the mandrel 16 at the bottom of the middle supporting plate 21, and both the center lines are located on the bottom surface of the middle supporting plate 21.
The central line of the cylindrical pin B3 is parallel to the central line of the core rod 16 at the bottom of the small supporting plate 13, and the two central lines are both positioned on the bottom surface of the small supporting plate 13.
The shape and the size of the locking component B are consistent with those of the locking component A; the locking component A is positioned at the opposite side of the rotary joint of the middle supporting plate 21 and the base 1, and the locking component B is positioned at the opposite side of the rotary joint of the small supporting plate 13 and the middle supporting plate 21.
The locking assembly A comprises a double lug plate A18, a double lug plate B17 and a screw rod 20, the lower end of the screw rod 20 is rotatably connected with the double lug plate A18 through a cylindrical pin C19, and the upper end of the screw rod 20 is locked on the double lug plate B17 through a butterfly nut 14. In use, a washer 15 is mounted on the screw 20 between the binaural panel B17 and the wing nut 14.
A groove A is formed in the top of the small supporting plate 13, a groove B is coaxially formed in the bottom of the groove A, and a stepped shaft is coaxially arranged on the groove B; the bottom of the groove A is detachably connected with a retaining ring A4, and the stepped shaft is detachably connected with a retaining ring B5. When the T-shaped screw rod 11 is used, the stepped shaft consists of two sections, the diameter of the lower section is larger than that of the upper section, and the head of the T-shaped screw rod 11 is limited in a gap between the side wall of the groove B and the lower section of the stepped shaft through the check ring A4 and the check ring B5.
The tool clamping component comprises a tool rest seat 7, a chuck 8 and a locking nut 9, the tool rest seat 7 is sleeved on the chuck 8, the locking nut 9 is in threaded connection with the tool rest seat 7, two T-shaped screws 11 are arranged on the tool rest seat 7 side by side, and the upper ends of the T-shaped screws 11 are in threaded connection with a compression nut 10. When the tool rest is used, the lower end of the tool rest base 7 is rotatably connected with the stepped shaft through the bearing 23, and the upper end of the tool rest base is sleeved on the chuck 8. The compression nut 10 is screwed, and the tool rest base 7 can be locked and fixed on the small supporting plate 13 through the T-shaped screw rod 11; the compression nut 10 is loosened, and the tool rest base 7 can rotate relative to the small supporting plate 13.
The angle measuring component is a dial 6, and an indexing disc 12 is arranged on a small supporting plate 13 at a position corresponding to the dial 6. The dial 6 is a 360-degree protractor, the indexing disc 12 is a vernier, and the accuracy can adopt 2 ', 5 ' or 10 '. When the end mill 24 is sharpened, the numerical values of the dial 6 and the index plate 12 are referred to index the end mill 24, so that the symmetry of the edge of the end mill 24 after sharpening is improved, and powerful guarantee is provided for the processing performance and the service life of the end mill 24 after sharpening.
1. Grinding the end face of the end mill: when the height of each cutting edge on the end mill 24 is different greatly, such as the edge jump, the knife break, etc., the end face of the end mill 24 is cut flat by linear cutting, and then the included angle between the small supporting plate 13, the middle supporting plate 21 and the base 1 is 0 °. The end mill 24 is placed in the cartridge 8 and passed through the lockThe end mill 24 is locked by tightening the nut 9, and the compression nut 10 and the wing nut 14 are tightened. The end mill 24 and the cutter grinding clamp are locked and fixed on the working table of a grinding machine capable of grinding a plane, the central line of the end mill 24 is vertical to the end surface of a grinding wheel 25, then the end surface of the end mill 24 is ground flat by the grinding wheel 25, the blade inclination angle lambdas is equal to 0 DEG, and the back angle alpha isoEqual to 0 deg., as shown in fig. 5.
2. Adjusting the inclination angle lambda s of the edge of the vertical milling cutter: as shown in fig. 6, if it is necessary to adjust the edge inclination angle λ s of the end mill 24 to 5 °, the sharpening jig is fastened and fixed to the table surface of the grinding machine capable of grinding a plane, the end mill 24 is fastened and fixed to the sharpening jig so that the angle between the small support plate 13 and the middle support plate 21 becomes 0 °, and the corresponding wing nut 14 is tightened. According to the nature of parallel lines, it can be seen intuitively from fig. 6 that the blade inclination angle λ s ═ B ═ 5 ° -the angle between the intermediate support plate 21 and the base 1;
according to a formula sin < A ═ distance between the radius of the core rod 16 and the height of the cushion block 22-the depth of the cushion block placing groove on the base 1)/the central line of the cylindrical pin A2 and the central line of the core rod 16, the core rod 16 is installed at the bottom of the middle supporting plate 21, the height of the cushion block 22 in the formula is known quantity and can be measured by using a graduated scale, so that the height of the required cushion block 22 can be calculated by the formula;
the cushion block 22 with the height consistent with the calculated value is placed in the cushion block placing groove on the base 1, and the corresponding butterfly nut 14 is screwed down, so that the included angle A between the middle supporting plate 21 and the base 1 is 5 degrees, and the blade inclination angle lambdas after sharpening is 5 degrees. After one edge of the end mill 24 is ground, the compression nut 10 is loosened, the holder base 7 is rotated with reference to the numerical values of the dial 6 and the index plate 12 to rotate the end mill 24 to a desired angle, and then the compression nut 10 is tightened to sharpen the next edge.
3. End mill relief angle alphaoAdjusting: as shown in FIG. 7, assume that it is desired to clearance the angle α of the end mill 24oThe adjustment is 5 degrees, the sharpening fixture is locked and fixed on the working table of the grinding machine capable of grinding a plane, the end mill 24 is locked and fixed on the sharpening fixture, the included angle between the middle supporting plate 21 and the base 1 is 0 degree, and the corresponding butterfly nut is screwed tightly. According to the nature of parallel linesAs can be seen visually in fig. 7, the relief angle αoThe angle D is equal to the angle C between the small supporting plate 13 and the middle supporting plate 21 is equal to 5 degrees;
according to a formula sin < C ═ distance between the radius of the core rod 16 and the height of the cushion block 22-the depth of the cushion block placing groove on the middle supporting plate 21)/the central line of the cylindrical pin B3 and the central line of the core rod 16, the core rod 16 is installed at the bottom of the small supporting plate 13, and the height of the cushion block 22 in the formula is known and can be measured by using a graduated scale, so that the height of the required cushion block 22 can be calculated;
the cushion block 22 with the height consistent with the calculated value is placed in the cushion block placing groove on the middle supporting plate 21, and the corresponding butterfly nut 14 is screwed down, so that the included angle C between the small supporting plate 13 and the middle supporting plate 21 is obtained, the included angle is 5 degrees, and the back angle alpha after sharpening is obtainedo5 deg. is equal to. After one edge of the end mill 24 is ground, the compression nut 10 is loosened, the holder base 7 is rotated with reference to the numerical values of the dial 6 and the index plate 12 to rotate the end mill 24 to a desired angle, and then the compression nut 10 is tightened to sharpen the next edge.
Specifically, for convenience of use, a plurality of spacers 22 of different heights may be fabricated in advance according to the angle of inclination and the angle of clearance commonly used for the end mill 24.
In conclusion, after the sharpening fixture is adjusted and fixed on the working table of the grinding machine, the sharpening work of the back angles or the edge inclination angles of the cutting edges of the end mill 24 can be completed in sequence through the grinding machine, and the consistency of the edge inclination angles and the back angle angles of the end mill 24 after sharpening is good. The grinding quantity of each cutting edge grinding machine can be accurately controlled by the grinding machine, and the cutting edges are good in symmetry and high-low consistency. The end mill 24 can be indexed by reference to the values of the dial 6 and indexing disk 12 to ensure the alignment of the edge of the end mill 24 after sharpening (with reference to the axis of the end mill 24). The cutting edges of the end mill 24 after sharpening participate in cutting at the same time, the cutting edges are abraded at the same speed, the probability of edge jumping and breakage of the end mill 24 is reduced, the processing performance and the durability of the end mill 24 are guaranteed, and the service life of the end mill 24 is prolonged; in the cutting process, the tool changing times and the sharpening times of the end mill 24 are reduced, and the processing efficiency is improved.
Example (b):
assuming that the desired edge rake angle λ s is 5 °, the relief angle α iso5 deg. is equal to. During manufacturing, the distance between the center line of the cylindrical pin A2 and the center line of the bottom core rod 16 of the middle supporting plate 21 is 150mm, and the distance between the center line of the cylindrical pin B3 and the center line of the bottom core rod 16 of the small supporting plate 13 is 150 mm. For convenience of calculation, the radius of the core rod 16 is equal to the depth of the cushion placing groove on the base 1, which is equal to the depth of the cushion placing groove on the middle supporting plate 21.
Sin λ s is h1/L1, where λ s is 5 °, h1 is the height of the spacer 22 placed on the base 1, and L1 is the distance between the center line of the cylindrical pin a2 and the center line of the mandrel 16 at the bottom of the middle pallet 21 is 150 mm;
h1＝L1×Sinλs＝150×Sin5°＝13.07mm。
Sinαoh2/L2, wherein αoH2 is the height of the cushion block 22 placed on the middle supporting plate 21, and L2 is the distance between the center line of the cylindrical pin B3 and the center line of the core rod 16 at the bottom of the small supporting plate 13 is 150 mm;
h2＝L2×Sinαo＝150×Sin5°＝13.07mm。
Claims (10)
1. the utility model provides an end mill sharpening anchor clamps which characterized in that: including base (1), well layer board (21), little layer board (13) and cutter clamping component, one side and base (1) of well layer board (21) are rotated and are connected, and the opposite side is passed through locking Assembly A and is connected with base (1), one side and well layer board (21) of little layer board (13) are rotated and are connected, and the opposite side passes through locking Assembly B and is connected with well layer board (21), the bottom of well layer board (21) and little layer board (13) all is equipped with plug (16), the top surface of base (1) and well layer board (21) all is equipped with plug holding tank and cushion placing groove in the position corresponding with plug (16), cutter clamping component rotates with little layer board (13) to be connected, the cover is equipped with angle measurement component on the cutter clamping component.
2. The end mill sharpening fixture of claim 1, wherein: the end mill sharpening clamp further comprises a cushion block (22), and the cushion block (22) is placed in the cushion block placing groove.
3. The end mill sharpening fixture of claim 1, wherein: the middle supporting plate (21) is rotatably connected with the base (1) through a cylindrical pin A (2), and the small supporting plate (13) is rotatably connected with the middle supporting plate (21) through a cylindrical pin B (3).
4. The end mill sharpening fixture of claim 3, wherein: the central line of the cylindrical pin A (2) is parallel to the central line of the core rod (16) at the bottom of the middle supporting plate (21), and the two central lines are both positioned on the bottom surface of the middle supporting plate (21).
5. The end mill sharpening fixture of claim 3, wherein: the central line of the cylindrical pin B (3) is parallel to the central line of the core rod (16) at the bottom of the small supporting plate (13), and the two central lines are both positioned on the bottom surface of the small supporting plate (13).
6. The end mill sharpening fixture of claim 1, wherein: the shape and the size of the locking component B are consistent with those of the locking component A; the locking component A is positioned at the opposite side of the rotary connection position of the middle supporting plate (21) and the base (1), and the locking component B is positioned at the opposite side of the rotary connection position of the small supporting plate (13) and the middle supporting plate (21).
7. The end mill sharpening fixture of claim 6, wherein: the locking assembly A comprises a double-lug plate A (18), a double-lug plate B (17) and a screw rod (20), the lower end of the screw rod (20) is rotatably connected with the double-lug plate A (18) through a cylindrical pin C (19), and the upper end of the screw rod (20) is locked on the double-lug plate B (17) through a butterfly nut (14).
8. The end mill sharpening fixture of claim 1, wherein: the top of the small supporting plate (13) is provided with a groove A, the bottom of the groove A is coaxially provided with a groove B, and the groove B is coaxially provided with a stepped shaft; the bottom of the groove A is detachably connected with a check ring A (4), and the stepped shaft is detachably connected with a check ring B (5).
9. The end mill sharpening fixture of claim 1, wherein: the tool clamping component comprises a tool rest seat (7), a chuck (8) and a locking nut (9), the tool rest seat (7) is sleeved on the chuck (8), the locking nut (9) is in threaded connection with the tool rest seat (7), two T-shaped screws (11) are arranged on the tool rest seat (7) side by side, and the upper ends of the T-shaped screws (11) are in threaded connection with a compression nut (10).
10. The end mill sharpening fixture of claim 1, wherein: the angle measuring component is a dial (6), and an indexing disc (12) is arranged on the small supporting plate (13) at a position corresponding to the dial (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095527.6A CN110640558A (en) | 2019-11-11 | 2019-11-11 | End milling cutter sharpening fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095527.6A CN110640558A (en) | 2019-11-11 | 2019-11-11 | End milling cutter sharpening fixture |
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| Publication Number | Publication Date |
|---|---|
| CN110640558A true CN110640558A (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911095527.6A Pending CN110640558A (en) | 2019-11-11 | 2019-11-11 | End milling cutter sharpening fixture |
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| CN (1) | CN110640558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247784A (en) * | 2020-11-02 | 2021-01-22 | 郑州康德泰口腔医疗科技有限公司 | Grinding disc for cutting edge of scaling device and using method |
-
2019
- 2019-11-11 CN CN201911095527.6A patent/CN110640558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247784A (en) * | 2020-11-02 | 2021-01-22 | 郑州康德泰口腔医疗科技有限公司 | Grinding disc for cutting edge of scaling device and using method |
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