A round-edge grinding head spindle structure with an internally water-cooled tool holder

Abstract

This utility model belongs to the technical field of glass edging equipment, and particularly relates to a round-edge grinding head spindle structure with an internally water-cooled cutter handle. It includes a grinding head seat, inlet and outlet flanges, a spindle, and an outlet cutter handle. The head of the outlet cutter handle extends to the outside of the inlet and outlet flanges and is equipped with an outlet grinding wheel. The spindle is provided with a first through hole, and the outlet cutter handle is provided with a second through hole. An inlet that is internally and externally connected is provided on one side of the inlet and outlet flanges. The inlet is connected to the first through hole. The outlet cutter handle is provided with a first outlet through hole in the middle, and the outlet grinding wheel is provided with a second outlet through hole. When cooling water is supplied through the inlet, the cooling water passes through the first through hole, the second through hole, and the first outlet through hole in sequence, and finally flows out from the second outlet through hole on the outlet grinding wheel, thereby cooling the outlet grinding wheel. This solves the problem that when the grinding wheel rotates at a high speed, conventional external cooling methods cannot effectively cool the grinding wheel due to centrifugal force.

Description

Technical Field

[0001] This utility model belongs to the technical field of glass edging equipment, and in particular relates to a spindle structure of a round-edge grinding head with an internally water-cooled tool holder. Background Technology

[0002] When glass edging equipment processes glass, the high-speed friction between the grinding wheel and the glass generates a large amount of heat. Therefore, glass edging equipment usually has a coolant spraying mechanism to continuously reduce the temperature of the grinding wheel during glass processing and prevent the grinding wheel from overheating. However, in order to ensure that the grinding wheel has effective processing capabilities, the grinding wheel speed is usually very high. Conventional external cooling methods will result in a shortened contact time between the coolant and the grinding wheel due to centrifugal force, leading to the problem that the coolant cannot effectively cool the grinding wheel.

[0003] This invention designs a round-edge grinding head spindle structure with an internally water-cooled tool holder to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A round-edged grinding head spindle structure with an internally water-cooled tool holder includes a grinding head seat, inlet and outlet water flanges, a spindle, and an outlet tool holder. The inlet and outlet water flanges are installed at the head of the grinding head seat, the spindle is installed inside the grinding head seat, and the head of the spindle extends to the inlet and outlet water flanges. The bottom end of the outlet tool holder is fixedly connected to the head of the spindle, and the head of the outlet tool holder extends to the outside of the inlet and outlet water flanges and is equipped with an outlet grinding wheel. The spindle is provided with at least one radially extending first through hole, and the outlet tool holder is provided with one or more radially extending second through holes. One side of the inlet and outlet water flange is provided with an internally and externally penetrating water inlet. The first through hole and the second through hole are connected, and the water inlet is connected to the first through hole. The outlet tool holder is provided with a first water outlet through hole in the middle that is connected to the second through hole, and the outlet grinding wheel is provided with a second water outlet through hole that is radially extending and connected to the first water outlet through hole.

[0006] As a preferred embodiment, two first sealing rings are installed between the inner end of the inlet / outlet flange and the outer end of the main shaft, with the two first sealing rings located on the upper and lower sides of the first through hole, respectively.

[0007] As a preferred option, the inlet and outlet flanges are provided with a drain outlet that runs through both the inside and outside on the side near the grinding head seat.

[0008] As a preferred embodiment, the outer wall of the bottom end of the water outlet handle is provided with an annular groove, and a second sealing ring is installed in the groove.

[0009] As a preferred embodiment, the inner cavity of the spindle head is a tapered groove, in which a tool holder locking ball is installed. A pull stud is installed at the bottom of the water outlet tool holder, and the tool holder locking ball rests against the bottom of the pull stud. A spindle pull rod is installed inside the spindle, and the head of the spindle pull rod is connected to the tool holder locking ball. A guide sleeve is fitted at the bottom of the spindle pull rod, and the outer end of the guide sleeve is rotatably connected to the inner end of the spindle. A butterfly spring is provided between the head of the guide sleeve and the inner wall of the spindle, surrounding the outside of the spindle pull rod.

[0010] As a preferred option, the top of the grinding head is equipped with a tool unloading cylinder assembly that contacts the spindle tie rod.

[0011] As a preferred option, the grinding head holder is equipped with a drive motor assembly that is poweredly connected to the bottom of the spindle.

[0012] As a preferred option, an end cap is installed at the top of the spindle.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] 1. When the water inlet supplies cooling water, the cooling water passes through the first through hole on the main shaft and the second through hole on the water outlet handle, then enters the first water outlet through hole inside the water outlet handle, and finally flows out from the second water outlet through hole on the water outlet grinding wheel, thereby cooling the water outlet grinding wheel. This solves the problem that conventional external cooling methods cannot effectively cool the grinding wheel due to centrifugal force when the grinding wheel speed is very high.

[0015] 2. The first sealing ring of this utility model prevents cooling water from entering the grinding head seat along the spindle and avoids cooling water from entering the bearing chamber of the spindle. The second sealing ring prevents cooling water from entering the spindle from the contact surface between the water outlet handle and the spindle.

[0016] 3. Because the inner cavity of the spindle head is a tapered groove, when the tool holder locking steel ball moves up and down along the inner wall of the groove, the internal space of the tool holder locking steel ball will shrink or expand. Therefore, by controlling the up and down movement of the tool holder locking steel ball, the action of locking and releasing the water outlet tool holder of the spindle can be realized, simplifying the operation steps required for the operator to change the water outlet grinding wheel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a utility model Figure 1 A schematic diagram from the perspective of A.

[0019] The labels in the diagram are as follows: 1. Grinding head holder; 2. Inlet / outlet flange; 3. Spindle; 4. Outlet tool holder; 5. Outlet grinding wheel; 6. First through hole; 7. Second through hole; 8. Water inlet; 9. Drain outlet; 10. First outlet through hole; 11. Second outlet through hole; 12. First sealing ring; 13. Second sealing ring; 14. Tool holder locking ball; 15. Pull stud; 16. Spindle pull rod; 17. Guide sleeve; 18. Disc spring; 19. Tool unloading cylinder assembly; 20. Drive motor assembly; 21. End cover. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following embodiments or drawings are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] A round-edge grinding head spindle structure with an internally water-cooled tool holder, such as Figure 1 and Figure 2 As shown, the device includes a grinding head base 1, inlet and outlet flanges 2, a main shaft 3, and an outlet tool holder 4. The inlet and outlet flanges 2 are installed at the head of the grinding head base 1. The main shaft 3 is installed inside the grinding head base 1, with its head extending to the inlet and outlet flanges 2. The bottom end of the outlet tool holder 4 is fixedly connected to the head of the main shaft 3. The head of the outlet tool holder 4 extends to the outside of the inlet and outlet flanges 2 and is equipped with an outlet grinding wheel 5. The main shaft 3 is provided with at least one radially extending first through hole 6. The outlet tool holder 4 is provided with one or more radially extending second through holes 7. The inlet and outlet flange 2 is provided with an inlet 8 that is internally and externally connected. The first through hole 6 and the second through hole 7 are connected. The inlet 8 is connected to the first through hole 6. The outlet tool holder 4 is provided with a first outlet through hole 10 that is connected to the second through hole 7 in the middle. The outlet grinding wheel 5 is provided with a second outlet through hole 11 that is radially extended and connected to the first outlet through hole 10.

[0022] When the water inlet 8 supplies cooling water, the cooling water passes through the first through hole 6 on the main shaft 3 and the second through hole 7 on the water cutter handle 4, then enters the first water outlet through hole 10 inside the water cutter handle 4, and finally flows out from the second water outlet through hole 11 on the water-discharge grinding wheel 5, thus cooling the water-discharge grinding wheel 5. This solves the problem that when the grinding wheel speed is very high, conventional external cooling methods cannot effectively cool the grinding wheel due to centrifugal force.

[0023] Two first sealing rings 12 are installed between the inner end of the inlet / outlet flange 2 and the outer end of the main shaft 3. The two first sealing rings 12 are located on the upper and lower sides of the first through hole 6, respectively. A drain port 9 with internal and external circulation is provided on the side of the inlet / outlet flange 2 near the grinding head seat 1. An annular groove is provided on the outer wall of the bottom end of the water outlet handle 4, and a second sealing ring 13 is installed in the groove.

[0024] The first sealing ring 12 prevents cooling water from entering the grinding head seat 1 along the spindle 3, thus preventing cooling water from entering the bearing chamber of the spindle 3. The second sealing ring 13 prevents cooling water from entering the spindle 3 from the surface of the water outlet handle 4 and the spindle 3. In addition, when the first sealing ring 12 fails, the drain port 9 on the water inlet and outlet flange 5 can discharge the coolant, further preventing the coolant from entering the bearing chamber of the spindle 3.

[0025] In addition, the flow rate at the drain outlet 9 can be used to determine whether the first sealing ring 12 is operating normally.

[0026] The inner cavity of the spindle head 3 is a tapered groove, in which a tool holder locking steel ball 14 is installed. A pull stud 15 is installed at the bottom of the water outlet tool holder 4, and the tool holder locking steel ball 14 abuts against the bottom end of the pull stud 15. A spindle pull rod 16 is installed inside the spindle 3, and the head of the spindle pull rod 16 is connected to the tool holder locking steel ball 14. A guide sleeve 17 is fitted at the bottom of the spindle pull rod 16, and the outer end of the guide sleeve 17 is rotatably connected to the inner end of the spindle 3. A butterfly spring 18 is provided between the head of the guide sleeve 17 and the inner wall of the spindle 3, which surrounds the outside of the spindle pull rod 16. A tool unloading cylinder assembly 19 that contacts the spindle pull rod 16 is installed at the top of the grinding head seat 1.

[0027] Since the inner cavity of the spindle 3 head is a tapered groove, when the tool holder locking steel ball 14 moves up and down along the inner wall of the groove, the internal space of the tool holder locking steel ball 14 will shrink or expand. Therefore, by controlling the up and down movement of the tool holder locking steel ball 14, the action of locking and releasing the water outlet tool holder 4 of the spindle 3 can be realized, simplifying the operation steps required for the operator to change the water outlet grinding wheel 5.

[0028] The grinding head holder 1 is equipped with a drive motor assembly 20 that is poweredly connected to the bottom end of the spindle 3.

[0029] An end cap 21 is installed at the top of the spindle 3.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A structure of a round edge grinding head spindle with internal water-cooled shank, characterized in that: The device includes a grinding head base (1), inlet and outlet flanges (2), a main shaft (3), and an outlet cutter handle (4). The inlet and outlet flanges (2) are installed at the head of the grinding head base (1). The main shaft (3) is installed inside the grinding head base (1). The head of the main shaft (3) extends to the inlet and outlet flanges (2). The bottom end of the outlet cutter handle (4) is fixedly connected to the head of the main shaft (3). The head of the outlet cutter handle (4) extends to the outside of the inlet and outlet flanges (2) and is equipped with an outlet grinding wheel (5). The main shaft (3) is provided with at least one radially extending first through hole. (6) The water outlet handle (4) is provided with one or more second through holes (7) extending radially. The water inlet (8) is provided on one side of the water inlet and outlet flange (2) and is connected to the inside and outside. The first through hole (6) and the second through hole (7) are connected. The water inlet (8) is connected to the first through hole (6). The water outlet handle (4) is provided with a first water outlet through hole (10) connected to the second through hole (7) in the middle. The water outlet grinding wheel (5) is provided with a second water outlet through hole (11) extending radially and connected to the first water outlet through hole (10).

2. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 1, characterized in that: Two first sealing rings (12) are installed between the inner end of the inlet / outlet flange (2) and the outer end of the main shaft (3). The two first sealing rings (12) are located on the upper and lower sides of the first through hole (6), respectively.

3. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 2, characterized in that: The inlet and outlet flange (2) is provided with a drain outlet (9) that runs through the inside and outside of the mill head seat (1) on the side near the mill head seat (1).

4. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 2, characterized in that: The bottom outer wall of the water outlet handle (4) is provided with an annular groove, and a second sealing ring (13) is installed in the groove.

5. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 1, characterized in that: The inner cavity of the head of the main shaft (3) is a tapered groove. A tool holder locking steel ball (14) is installed in the groove. A pull stud (15) is installed at the bottom of the water outlet tool holder (4). The tool holder locking steel ball (14) abuts against the bottom of the pull stud. A main shaft pull rod (16) is installed inside the main shaft (3). The head of the main shaft pull rod (16) is connected to the tool holder locking steel ball (14). A guide sleeve (17) is sleeved at the bottom of the main shaft pull rod (16). The outer end of the guide sleeve (17) is rotatably connected to the inner end of the main shaft (3). A butterfly spring (18) is provided between the head of the guide sleeve (17) and the inner wall of the main shaft (3) and surrounds the outside of the main shaft pull rod (16).

6. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 5, characterized in that: The top of the grinding head (1) is equipped with a tool unloading cylinder assembly (19) that contacts the spindle tie rod (16).

7. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 1, characterized in that: The grinding head base (1) is equipped with a drive motor assembly (20) that is poweredly connected to the bottom end of the main shaft (3).

8. The round-edge grinding head spindle structure with an internally water-cooled tool holder according to claim 1, characterized in that: The top of the spindle (3) is fitted with an end cap (21).

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