High-precision feeding edge grinding head

Abstract

The utility model relates to the technical field of grinding equipment, and discloses a high-precision feeding edge grinding head which comprises a shell, an edge grinding wheel, sliding sleeves and a first driving shaft, and the two ends of the first driving shaft are installed in the sliding sleeves respectively. The sliding sleeve and the first driving shaft can move in the shell in the axial direction of the first driving shaft, and one end of the first driving shaft is connected with the edge grinding wheel. Wherein the shell is provided with an oil injection hole, the sliding sleeve is provided with an oil through hole opposite to the oil injection hole, and an opening communicated with the oil through hole is formed in the inner circumferential face of the end, close to the edge grinding wheel, of the sliding sleeve. According to the high-precision feeding edge grinding head, non-stop oil supplementation can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, in particular to a high-precision feeding edge grinding head. Background Art

[0002] like Figure 1 The existing high-precision feed edge grinding head mainly includes a large motor 1', a motor flange 2', a rear end cover assembly 3', a grinding head seat 4', a large gear 5', a sliding sleeve 6', a front end cover assembly 7', a pressure cover 8', a spindle system 9', a feed motor reducer assembly 10', a pinion shaft 11', and a box cover 12'. When the equipment is working, the feed motor reducer assembly 10' drives the pinion shaft 11' to rotate, and the pinion shaft 11' engages with the large gear 5' to drive the large gear 5' to rotate; the large gear 5' and the sliding sleeve 6' are threadedly connected, and the rotation of the large gear 5' drives the sliding sleeve assembly 6' to feed axially; the axial feeding of the sliding sleeve assembly 6' drives the spindle system 9' to feed axially, thereby realizing the axial feeding of the entire grinding head. At the same time, the large motor 1' drives the spindle to rotate through the coupling of the spindle system 9' to realize the rotational movement of the grinding head.

[0003] The existing high-precision feed edge grinding head has a refueling hole for lubricating the inside of the sliding sleeve 6' at the front of the grinding head, which is inconvenient for operators to perform refueling operations during the operation of the equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-precision feeding edge grinding head to achieve oil replenishment without stopping the machine.

[0005] In order to solve the above technical problems, the utility model provides a high-precision feed edge grinding head, comprising a housing, an edge grinding wheel, a sliding sleeve and a first drive shaft, wherein both ends of the first drive shaft are respectively installed in the sliding sleeve, the sliding sleeve and the first drive shaft can move in the housing along the axial direction of the first drive shaft, and one end of the first drive shaft is connected to the edge grinding wheel; wherein

[0006] The outer shell is provided with an oil filling hole, the sliding sleeve is provided with an oil through hole opposite to the oil filling hole, and the sliding sleeve is provided with an opening connected with the oil through hole on the inner circumferential surface close to one end of the edging wheel.

[0007] As an improvement of the above-mentioned scheme, the outer shell includes a grinding head seat, a flange and an end cover, the oil filling hole is arranged on the flange, the end cover is arranged at one end of the grinding head seat, the end cover is connected with the grinding head seat to form a first transmission chamber, and the first transmission chamber is provided with a first transmission member for driving the sliding sleeve to move axially along the first drive shaft, and the sliding sleeve passes through the first transmission chamber.

[0008] As an improvement of the above solution, an adjustment pad is provided between the end cover and the grinding head seat.

[0009] As an improvement of the above scheme, a second transmission chamber connected to the first transmission chamber is formed in the grinding head seat, and a second drive shaft and a second transmission member connected to the first drive shaft and used to drive the first transmission member to rotate are provided in the second transmission chamber.

[0010] As an improvement of the above solution, the first transmission member is a driven gear, the second transmission member is a driving gear, the driving gear and the driven gear are meshed with each other, the driving gear is fixed to the second drive shaft, and the driven gear is threadedly connected to the outer circumferential surface of the sliding sleeve.

[0011] As an improvement of the above solution, the first drive shaft is driven to rotate by a first rotation drive mechanism passing through the flange;

[0012] The second transmission chamber circumferentially covers one end of the second drive shaft, and the other end of the second drive shaft extends out of the second transmission chamber and is connected to the second rotation drive mechanism.

[0013] As an improvement of the above scheme, the oil filling hole includes a radial section and an axial section, the radial section is arranged along the radial extension of the first drive shaft, the axial section is arranged along the axial extension of the first drive shaft, the oil through hole is arranged along the axial extension of the first drive shaft, and the oil through hole is directly opposite to the axial section.

[0014] As an improvement of the above solution, a double-row angular contact ball bearing is provided at one end of the first drive shaft close to the edging wheel, and a deep groove ball bearing is provided at one end of the first drive shaft away from the edging wheel.

[0015] As an improvement of the above-mentioned scheme, a shock-absorbing hole is provided on the grinding head seat, and an elastic compression piece and a locking block are provided in the shock-absorbing hole. The grinding head seat is provided with a pressure cover which is fixed thereto and closes the shock-absorbing hole. One end of the elastic compression piece is connected to the pressure cover, and the other end is connected to the locking block. The locking block abuts against the outer peripheral surface of the sliding sleeve.

[0016] As an improvement of the above solution, an oil filling nozzle is installed in the oil filling hole.

[0017] The implementation of this utility model has the following beneficial effects:

[0018] The utility model discloses a high-precision feed edge grinding head, wherein two ends of a first driving shaft are respectively installed in a sliding sleeve, one end of the first driving shaft is connected to the edge grinding wheel, the sliding sleeve and the first driving shaft are arranged in an outer shell and can move along the axial direction of the first driving shaft, an oil filling hole is arranged on the outer shell, an oil through hole opposite to the oil filling hole is arranged on the sliding sleeve, an opening connected to the oil through hole is arranged on the inner circumferential surface of the sliding sleeve close to one end of the edge grinding wheel, lubricating oil is injected into the oil filling hole, the lubricating oil flows to the end of the sliding sleeve close to the edge grinding wheel through the oil filling hole and the oil through hole in turn, and flows to the bearing of the end from the opening position of the inner circumferential surface of the sliding sleeve to provide lubrication; since the oil filling hole is arranged at the end of the outer shell away from the edge grinding wheel, it is convenient for an operator to add lubricating oil when the equipment is in the working process, and the oiling operation is safe and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an existing high-precision feed edge grinding head;

[0020] Figure 2 yes Figure 1 Side view of

[0021] Figure 3 This is a schematic structural diagram of an embodiment of a high-precision feed edge grinding head of the utility model;

[0022] Figure 4 yes Figure 3 Side view of

[0023] Figure 5 is a schematic structural diagram of a second embodiment of a first drive shaft;

[0024] Figure 6 is a schematic structural diagram of a third embodiment of the first drive shaft;

[0025] Figure 7 is a schematic structural diagram of a fourth embodiment of the first drive shaft;

[0026] Figure 8 It is a schematic diagram of the structure of the adjustment pad;

[0027] Fig. 9 yes Figure 3 Schematic diagram of the enlarged structure of part A. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 3 and Figure 4As shown, the utility model discloses an embodiment of a high-precision feed edge grinding head, comprising a shell 1, an edge grinding wheel 2, a sliding sleeve 3 and a first drive shaft 4, wherein both ends of the first drive shaft 4 are respectively mounted in the sliding sleeve 3 through bearings, the sliding sleeve 3 and the first drive shaft 4 can move along the axial direction of the first drive shaft 4 in the shell 1, and one end of the first drive shaft 4 is connected to the edge grinding wheel 2; wherein the shell 1 is provided with an oil filling hole 111 at an end away from the edge grinding wheel 2, the sliding sleeve 3 is provided with an oil through hole 31 opposite to the oil filling hole 111, and the sliding sleeve 3 is provided with an opening 32 connected with the oil through hole 31 on the inner circumferential surface close to one end of the edge grinding wheel 2.

[0030] In this embodiment, both ends of the first driving shaft 4 are respectively installed in the sliding sleeve 3 through bearings, one end of the first driving shaft 4 is connected to the edge grinding wheel 2, the sliding sleeve 3 and the first driving shaft 4 are arranged in the housing 1 and can move along the axial direction of the first driving shaft 4, by arranging an oil filling hole 111 on the end of the housing 1 away from the edge grinding wheel 2, and arranging an oil through hole 31 opposite to the oil filling hole 111 on the sliding sleeve 3, and an opening 32 connected with the oil through hole 31 is arranged on the inner circumference of the sliding sleeve 3 close to the end of the edge grinding wheel 2, and by injecting lubricating oil into the oil filling hole 111, the lubricating oil flows to the end of the sliding sleeve 3 close to the edge grinding wheel 2 through the oil filling hole 111 and the oil through hole 31 in turn, and flows to the bearing at this end from the position of the opening 32 on the inner circumference of the sliding sleeve 3 to provide lubrication; since the oil filling hole 111 is arranged at the end of the housing 1 away from the edge grinding wheel 2, it is convenient for the operator to add lubricating oil when the equipment is in the working process, so as to realize the oil replenishment of the bearing system without stopping, thereby improving the production efficiency and convenience of use of the edge grinding machine.

[0031] Specifically, the housing 1 of this embodiment includes a flange 11 , a grinding head seat 12 and an end cover 13 .

[0032] The first drive shaft 4 is driven to rotate by the first rotation drive mechanism passing through the flange 11. The first rotation drive mechanism of this embodiment is a large motor 5, the housing of the large motor 5 is fixed to the flange 11, and the motor shaft of the large motor 5 is connected to the first drive shaft 4 through a coupling.

[0033] The end cover 13 is arranged at one end of the grinding head seat 12, and the end cover 13 is connected with the grinding head seat 12 to form a first transmission chamber a, and the first transmission chamber a is provided with a first transmission member 6 for driving the sliding sleeve 3 to move along the axial direction of the first drive shaft 4, and the sliding sleeve 3 passes through the first transmission chamber a. A second transmission chamber b connected to the first transmission chamber a is formed in the grinding head seat 12, and a second drive shaft 71 and a second transmission member 72 connected to the first drive shaft 4 and used to drive the first transmission member 6 to rotate are provided in the second transmission chamber b. The second transmission chamber b circumferentially covers one end of the second drive shaft 71, and the other end of the second drive shaft 71 extends out of the second transmission chamber b and is connected to the second rotation drive mechanism. The second rotation drive mechanism of this embodiment is a feed motor reducer assembly 73.

[0034] Existing high-precision feed edge grinding heads generally have many parts and are complicated to assemble. Figure 1 The high-precision feed edge grinding head shown in the figure needs to match the grinding head seat 4' and the box cover 12' for assembly and combined processing during shell processing. When the shell is assembled, the front end cover assembly 7' needs to be pressed into the grinding head seat 4' first, and then the large gear 5' and the sliding sleeve 6' are inserted, and finally the pressure cover 8' is locked, and the box cover 12' is assembled to the grinding head seat 4', and there are many assembly steps.

[0035] The housing of this embodiment eliminates the front cover assembly 7' and the box cover 12', and the grinding head seat adopts the form of a casting to integrate the original grinding head seat 4', the front cover assembly 7' and the box cover 12', thereby simplifying the production and assembly process.

[0036] In this embodiment, the second drive shaft 71 is arranged crosswise with the first drive shaft 4, the first transmission member 6 is a driven gear, the second transmission member 72 is a driving gear fixed to the second drive shaft 71, the driving gear and the driven gear are both helical gears, and the driving gear and the driven gear are meshed with each other, and the driven gear is threadedly connected to the outer peripheral surface of the sliding sleeve 3. The driven gear rotates to make the sliding sleeve 3 axially advance, and the driven gear and the sliding sleeve 3 are connected by fine threads to ensure feeding accuracy.

[0037] When the equipment is working, the feed motor reducer assembly drives the second drive shaft 71 to rotate, and the driving gear on the second drive shaft 71 meshes with the driven gear to drive the driven gear to rotate; the driven gear is threadedly connected to the sliding sleeve 3, and the rotation of the driven gear drives the sliding sleeve 3 to feed axially; the axial feeding of the sliding sleeve 3 drives the axial feeding of the first drive shaft 4 to achieve the axial feeding of the entire edging wheel 2. At the same time, the large motor 5 drives the first drive shaft 4 to rotate through the coupling to achieve the rotational movement of the edging wheel 2.

[0038] The bearing on the first drive shaft 4 of this embodiment is a combination of a double-row angular contact ball bearing 41 and a deep groove ball bearing 42. Among them, a double-row angular contact ball bearing 41 is provided at one end close to the edging wheel 2, and a deep groove ball bearing 42 is provided at one end of the first drive shaft 4 away from the edging wheel 2. The high-precision edging head of this embodiment will be subjected to a large radial force and a certain axial force when the edging wheel 2 is working, and the high-speed rotation will cause the first drive shaft 4 to heat up and lengthen, so a double-row angular contact ball bearing 41 is used to fix it, and a deep groove ball bearing 42 is used to move relative to the sliding sleeve 3. The double-row angular contact ball bearing 41 can withstand a large axial force, and the sliding sleeve 3 can push the first drive shaft 4 to axially feed by pushing the double-row angular contact ball bearing 41, and the deep groove ball bearing 42 moves relative to the sliding sleeve 3 to avoid the bearing being stuck due to the deformation of the first drive shaft 4.

[0039] In addition to the double-row angular contact ball bearing 41 used at one end near the edging wheel 2 in this embodiment, the end near the edging wheel 2 can also be replaced with the following bearings according to different working conditions:

[0040] like Figure 5 , tapered roller bearings 43 installed in pairs can withstand larger axial loads, but have low limiting speeds.

[0041] like Figure 6 , angular contact ball bearings 44 installed in pairs have greater bending stiffness, but are wider than double row angular contact ball bearings.

[0042] like Figure 7 , cylindrical roller bearing 45 + deep groove ball bearing 42, cylindrical roller bearings can withstand larger radial loads, while deep groove ball bearings can withstand certain bidirectional axial loads.

[0043] In addition to the helical gear transmission of the present embodiment, the first transmission member 6 and the second transmission member 72 of the utility model can also be replaced by a worm gear transmission. The worm gear transmission is relatively large, but its transmission efficiency is lower than that of the helical gear transmission, its stability is poorer, and its noise is also greater.

[0044] The coupling of the utility model connecting the large motor 5 and the first drive shaft 4 can select a star-shaped elastic coupling or a gear coupling according to different working conditions. Among them, the star-shaped elastic coupling is composed of two half-couplings and a star-shaped elastic body. Specifically, two four-claw half-couplings are inserted into the eight vacancies of the star-shaped elastic body to form a coupling, and the rotational motion can be transmitted through a flat key; this type of coupling transmits a large torque and is suitable for high-load drive equipment, but the processing cost is high. The gear coupling is composed of two half-couplings, a hole elastic retaining ring and a connecting sleeve. Specifically, two gear-type half-couplings are inserted into the internal gear-type connecting sleeve, separated by a hole elastic retaining ring in the middle, forming a coupling that can transmit rotational motion through a flat key; because the connecting sleeve of the coupling needs to be a softer material, such as nylon, etc., under high-load working conditions, the inner teeth of the connecting sleeve will wear, and the service life is short, but the processing cost is low.

[0045] In the prior art, a set screw is generally used on the rear end cover assembly 3' to push the grinding head seat 34' so as to adjust the axial clearance of the spindle system 9' inside the grinding head to control the movement of the grinding head. However, this adjustment method is difficult to ensure the accuracy of the adjustment. Figure 8 In this embodiment, an adjustment pad 8 with a thickness of 0.03 mm to 0.2 mm is arranged between the end cover 13 and the grinding head seat 12. The adjustment pad 8 is an annular sheet made of copper, stainless steel, etc., and is provided with a notch. In this embodiment, by adding a suitable number of equal-thickness adjustment pads 8 between the end cover 13 and the grinding head seat 12, the movement clearance of the grinding head can be accurately adjusted.

[0046] During assembly, first insert the second transmission member 72 and the second drive shaft 71 into the grinding head seat 12, then insert the threaded first transmission member 6 and the sliding sleeve 3, then install the end cover 13 to fix the first transmission member 6, and when installing the end cover 13, adjust the axial clearance of the position of the first transmission member 6 by adding an appropriate amount of adjustment pads 8, insert the first drive shaft 4 into the sliding sleeve 3, and finally install the flange 11, the large motor 5 and the feed motor reducer assembly 73.

[0047] In this embodiment, the oil injection hole 111 is arranged on the flange 11. The oil injection hole 111 on the flange 11 specifically includes a radial section and an axial section. The radial section is arranged along the radial extension of the first drive shaft 4, the axial section is arranged along the axial extension of the first drive shaft 4, the oil through hole 31 is arranged along the axial extension of the first drive shaft 4, and the oil through hole 31 is directly opposite to the axial section. An oil injection nozzle 9 is installed in the radial section of the oil injection hole 111, and lubricating oil is injected into the oil injection hole 111 through the oil injection nozzle 9. When the axial section of the oil injection hole 111 is connected with the oil through hole 31, the lubricating oil flows to the end of the sliding sleeve 3 close to the edge grinding wheel 2 through the radial section of the oil injection hole 111, the axial section of the oil injection hole 111 and the oil through hole 31 in sequence, and flows to the bearing at this end from the opening 32 position on the inner circumference of the sliding sleeve 3.

[0048] Since there is a gap between the sliding sleeve 3 and the grinding head seat 12 and the end cover 13 after assembly, in order to reduce the vibration generated by the first drive shaft 4 and the sliding sleeve 3 when the grinding head is working, the sliding sleeve 3 is combined with the end cover 13 to reduce the vibration generated by the first drive shaft 4 and the sliding sleeve 3 when the grinding head is working. Fig. 9 In this embodiment, a shock-absorbing hole is provided on the grinding head seat 12, and an elastic compression member 101 and a locking block 102 are provided in the shock-absorbing hole. The grinding head seat 12 is provided with a pressure cover 103 fixed thereto and closing the shock-absorbing hole, and a gasket 104. One end of the elastic compression member 101 is connected to the pressure cover 103, and the other end is connected to the locking block 102. The locking block 102 abuts against the outer peripheral surface of the sliding sleeve 3.

[0049] Among them, the pressure cover 103 and the grinding head seat 12 are threadedly connected by fasteners such as bolts 105 and knurled screws. Tightening the bolts 105, knurled screws and other fasteners can press down the gasket 104 to compress the elastic compression member 101. The elastic force generated by the compressed elastic compression member 101 gives the locking block 102 a downward force, thereby pressing the sliding sleeve 3, thereby playing a role in buffering and shock absorption.

[0050] The elastic compression member 101 of this embodiment may be a compression spring, or a material with good elasticity such as rubber. The compression spring and rubber etc. both compress the locking block 102 through the elastic force generated by compression deformation, thereby locking the sliding sleeve 3 .

[0051] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A high-precision feed edge grinding head, characterized in that: It comprises a housing, an edge grinding wheel, a sliding sleeve and a first driving shaft, wherein two ends of the first driving shaft are respectively installed in the sliding sleeve, the sliding sleeve and the first driving shaft can move in the housing along the axial direction of the first driving shaft, and one end of the first driving shaft is connected to the edge grinding wheel; in The outer shell is provided with an oil filling hole, the sliding sleeve is provided with an oil through hole opposite to the oil filling hole, and the sliding sleeve is provided with an opening connected with the oil through hole on the inner circumferential surface close to one end of the edging wheel.

2. The high-precision feed edge grinding head according to claim 1, characterized in that: The outer shell includes a grinding head seat, a flange and an end cover, the oil filling hole is arranged on the flange, the end cover is arranged at one end of the grinding head seat, the end cover is connected with the grinding head seat to form a first transmission chamber, and the first transmission chamber is provided with a first transmission member for driving the sliding sleeve to move axially along the first drive shaft, and the sliding sleeve passes through the first transmission chamber.

3. The high-precision feed edge grinding head according to claim 2, characterized in that: An adjustment pad is provided between the end cover and the grinding head seat.

4. The high-precision feed edge grinding head according to claim 3, characterized in that: A second transmission chamber connected to the first transmission chamber is formed in the grinding head seat. A second drive shaft and a second transmission member connected to the first drive shaft and used to drive the first transmission member to rotate are arranged in the second transmission chamber.

5. The high-precision feed edge grinding head according to claim 4, characterized in that: The first transmission member is a driven gear, the second transmission member is a driving gear, the driving gear and the driven gear are meshed with each other, the driving gear is fixed to the second driving shaft, and the driven gear is threadedly connected to the outer peripheral surface of the sliding sleeve.

6. The high-precision feed edge grinding head according to claim 4, characterized in that: The first driving shaft is driven to rotate by a first rotating driving mechanism passing through the flange; The second transmission chamber circumferentially covers one end of the second drive shaft, and the other end of the second drive shaft extends out of the second transmission chamber and is connected to the second rotation drive mechanism.

7. The high-precision feed edge grinding head according to claim 1, characterized in that: The oil injection hole includes a radial section and an axial section, the radial section is arranged along the radial extension of the first drive shaft, the axial section is arranged along the axial extension of the first drive shaft, the oil through hole is arranged along the axial extension of the first drive shaft, and the oil through hole is directly opposite to the axial section.

8. The high-precision feed edge grinding head according to claim 1, characterized in that: A double-row angular contact ball bearing is disposed at one end of the first driving shaft close to the edging wheel, and a deep groove ball bearing is disposed at one end of the first driving shaft away from the edging wheel.

9. The high-precision feed edge grinding head according to claim 2, characterized in that: The grinding head seat is provided with a shock-absorbing hole, and an elastic compression piece and a locking block are provided in the shock-absorbing hole. The grinding head seat is provided with a pressure cover fixed thereto and closing the shock-absorbing hole. One end of the elastic compression piece is connected to the pressure cover, and the other end is connected to the locking block. The locking block abuts against the outer peripheral surface of the sliding sleeve.

10. The high-precision feed edge grinding head according to claim 1, characterized in that: An oil filling nozzle is arranged in the oil filling hole.

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