Planetary deflection type grinding device

Abstract

The utility model discloses a planetary deflection type grinding device which comprises a grinding piece and a grinding material tank, the grinding piece is located above the grinding material tank, a power head is arranged on the lower end face, where a main shaft disc is located, of the grinding piece, and a plurality of deflection rods in the vertical direction are arranged at the lower end of the power head. The spindle disc carries the power head to rotate in the first vector direction, meanwhile, the power head carries the deflection rods to rotate in the second vector direction and revolve in the first vector direction, and the multiple sets of deflection rods rotate on the power head in the third vector direction and revolve in the second vector direction; a grinding head is arranged at the bottom of the deflection rod; fluid abrasive is contained in the abrasive tank, and the abrasive tank is implanted into the fluid abrasive through the deflection rod of the grinding piece. According to the device, a planetary rotation mode is adopted, workpieces are ground at the same time through a plurality of grinding heads, high-efficiency and high-precision machining can be achieved, and the requirement for high-precision machining of the workpieces is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding equipment, and in particular relates to a planetary deflection grinding device. Background Art

[0002] It is generally divided into flat surface grinding and curved surface grinding, and is widely used in the manufacturing industry. Metal wire rulers, gauge block working surfaces, mechanical seal rings, motor parts, single crystal silicon wafers, medical bone plates, artificial joints and other parts require mirror finishing, which is a key technology.

[0003] Although there are many differences in equipment structure in the mainstream planetary grinding method, it can be roughly divided into two types: curved surface grinding and flat surface grinding.

[0004] In the Chinese patent application publication number CN 118386057A, a planetary surface grinder is disclosed, which relates to the technical field of grinding and polishing devices, including a ring gear, a lower turntable, a sun gear, an upper turntable, and two annular diamond grinding pads, the two diamond grinding pads are respectively arranged on two opposite planes of the lower turntable and the upper turntable; a positioning carrier, the positioning carrier is provided with a plurality of first positioning holes and a plurality of second positioning holes, the plurality of first positioning holes are all close to the edge of the positioning carrier, and the positioning carrier is arranged between the two diamond grinding pads. This planetary surface grinder further improves the production efficiency of the planetary surface grinder while ensuring the thickness consistency of multiple hard and brittle materials. However, in the actual use of this device, this method only provides a certain specific rotation speed, so when grinding different materials, it is easy to cause deformation of the workpiece. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a planetary deflection grinding device to solve the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A planetary deflection grinding device includes a grinding piece and an abrasive tank. The grinding piece is located above the abrasive tank and includes a spindle disk, a power head, a deflection rod and a grinding head.

[0008] A power head is provided at the lower end surface of the spindle disk, and a plurality of groups of deflection rods in a vertical direction are provided at the lower end of the power head, so that the spindle disk carries the power head to rotate in a first vector direction, and at the same time, the power head carries the deflection rods to rotate in a second vector direction and revolve along the first vector direction, and the plurality of groups of deflection rods rotate along a third vector direction on the power head and revolve along the second vector direction;

[0009] A grinding head is provided at the bottom of the deflection rod;

[0010] The abrasive tank contains fluid abrasive, and the deflection rod of the grinding piece is implanted in the fluid abrasive. The relative installation of the grinding piece as a whole forms a periodic grinding of the fluid abrasive.

[0011] Furthermore, the power heads are distributed in an array on the lower end surface where the spindle disk is located, and are provided in several groups.

[0012] Furthermore, the deflection rods are distributed in an array on the lower end surface where the power head is located.

[0013] Furthermore, the first vector direction, the second vector direction and the third vector direction are all circular motions.

[0014] Furthermore, the speed of the deflection rod in the third vector direction is S1, the speed of the power head in the second vector direction is S2, the speed of the spindle disc in the first vector direction is S3, the radius of the deflection rod in the upper specification is π1, and the radius of the current specification is π1 ， , at this time, the current linear velocity of the grinding member is V;

[0015] That is, V={S1 ， =S1 / π1*π1 ，

[0016] S2 ， =S2 / π1*π1 ，

[0017] S3 ， =S3 / π1*π1 ，}.

[0018] Furthermore, the grinding member moves in the up and down directions, so that the grinding head where the deflection rod is located is immersed in the fluid abrasive contained in the abrasive tank.

[0019] Furthermore, the abrasive tank is moved in the up and down directions, so that the grinding head where the deflection rod is located is immersed in the fluid abrasive contained in the abrasive tank.

[0020] Beneficial effects of the utility model:

[0021] 1. The spindle disc, power head and deflection rod used in this device cooperate with each other to ensure grinding accuracy while reducing its deformation and ensuring its overall service life.

[0022] 2. The spindle disc, power head and deflection rod used in this device are used to synchronously change the vector speed, thereby ensuring that the relative speed with the grinding material is always maintained during the actual operation process.

[0023] 3. The planetary rotation method adopted by this device can grind the workpiece simultaneously through multiple grinding heads, which can achieve high efficiency and high precision processing and meet the needs of high precision processed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments or the prior art.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the grinding element according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the bottom structure of the grinding element according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the vector speed change of each component of the grinding piece in an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a planetary deflection grinding device, including a grinding piece 1, an abrasive tank 106, the grinding piece 1 is located above the abrasive tank 106, and the grinding piece 1 includes a spindle disk 101, a power head 102, a deflection rod 103 and a grinding head 104.

[0032] like Figure 3 、 Figure 4As shown, a group of power heads 102 are provided on the lower end surface of the spindle disk 101 (the power heads 102 are distributed in a row on the lower end surface of the spindle disk 101, and are provided in several groups), and several groups of deflection rods 103 in a vertical direction are provided on the lower end portion of the power head 102 (at this time, the deflection rods 103 are distributed in a row on the lower end surface of the power head 102 to ensure that the deflection rods 103 are in), and the spindle disk 101 carries the power head 102 to rotate in a first vector direction, while the power head 102 carries the deflection rods 103 to rotate in a second vector direction and revolve with the first vector direction, and multiple groups of deflection rods 103 rotate on the power head 102 along a third vector direction and revolve with the second vector direction;

[0033] A grinding head 104 is located at the bottom of the deflection rod 103. Within the space allowed on the rotating spindle disk 101, a plurality of power heads 102, deflection rods 103, and grinding heads 104 are arranged in a circular motion. Simultaneously, the workpiece's circular motion includes both uniform rotation and high-speed revolution. In other words, the first, second, and third vector directions all represent circular motion.

[0034] Abrasive tank 106 contains fluid abrasive, which is embedded in the fluid abrasive via deflection rod 103 of grinding element 1. The relative movement of grinding element 1 as a whole creates periodic grinding of the fluid abrasive. Motion is essential for grinding and polishing, creating relative friction and collision between the workpiece and the abrasive, thereby grinding the fluid abrasive.

[0035] In real manufacturing scenarios, there are often many kinds of materials that need to be ground to a mirror finish, such as titanium alloy, brass, stainless steel, cobalt-chromium-molybdenum, ceramics, etc.

[0036] This also results in the use of fluid abrasives of different materials according to different material needs: corundum, aluminum oxide, zirconium oxide, diamond powder, walnut shells, corn cobs, resins, etc.

[0037] During the grinding process, multiple periodic circular motions of the grinding head 104 and relative motions of the fluid abrasive are required to generate high-frequency impact and friction at the surface of the grinding head 104 to achieve the expected effect of this process in the manufacturing process.

[0038] In real-world product development, a single workpiece often has multiple variations in size, material, and geometry, but with varying sizes. While the rotational speed remains constant, increasing or decreasing the radius does not change the angular velocity. However, changes in workpiece size can cause changes in the angular frequency of the motion. For example, a larger radius increases the angular frequency, which in turn increases the tangential velocity between the workpiece and the fluid, leading to greater resistance.

[0039] Kepler's second law: In equal amounts of time, the line connecting the Sun and a moving planet sweeps out equal areas.

[0040] Based on the above, assuming that the deflection rod 103, the power head 102, and the spindle disk 101 are all regarded as uniform circular motion, the change in the diameter of the deflection rod 103 will cause the change in the radius of the power head 102 and the spindle disk 101, and the radius values in this change are equal.

[0041] like Figure 5 As shown, when observing the movement of deflection rod 103, its spatial position shifts over time. The closer the time interval during which the observer observes the movement of deflection rod 103 in a fluid is to zero, the closer the obtained information on the object's motion state is to its true state. Therefore, the observer only needs to return their field of view to the initial position of deflection rod 103.

[0042] Definition: the speed of the deflection rod 103 in the third vector direction is S1, the speed of the power head 102 in the second vector direction is S2, the speed of the spindle disk 101 in the first vector direction is S3, the radius of the upper specification deflection rod 103 is π1, and the current specification radius is π1 ， , at this time, the current linear velocity of the grinding piece 1 is V;

[0043] That is, V={S1 ， =S1 / π1*π1 ，

[0044] S2 ， =S2 / π1*π1 ，

[0045] S3 ， =S3 / π1*π1 ， This design can meet the grinding needs of various grinding materials.

[0046] The grinding element 1 moves up and down, so that the grinding head 104 where the deflection rod 103 is located is immersed in the fluid abrasive contained in the abrasive tank 106. The abrasive tank 106 moves up and down, so that the grinding head 104 where the deflection rod 103 is located is immersed in the fluid abrasive contained in the abrasive tank 106.

[0047] The device can ensure that the deflection speed of the deflection rod in the vector direction is not easily changed, and can also reduce the deformation of the deflection rod and the damage to the power head and the main shaft disk.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A planetary deflection grinding device, comprising a grinding element (1) and an abrasive tank (106), wherein the grinding element (1) is located above the abrasive tank (106), and is characterized in that: The grinding element (1) comprises a main shaft disk (101), a power head (102), a deflection rod (103) and a grinding head (104). A power head (102) is provided at the lower end surface of the main shaft disk (101), and a plurality of groups of deflection rods (103) in a vertical direction are provided at the lower end of the power head (102), so that the main shaft disk (101) carries the power head (102) to rotate in a first vector direction, and at the same time, the power head (102) carries the deflection rods (103) to rotate in a second vector direction and revolve along the first vector direction, and a plurality of groups of the deflection rods (103) rotate along a third vector direction on the power head (102) and revolve along the second vector direction; A grinding head (104) is provided at the bottom of the deflection rod (103); The abrasive tank (106) contains fluid abrasive, which is placed in the fluid abrasive through the deflection rod (103) of the grinding piece (1). The relative rotation of the grinding piece (1) as a whole forms periodic grinding of the fluid abrasive.

2. The planetary deflection grinding device according to claim 1, characterized in that: The power heads (102) are distributed in a row on the lower end surface of the main shaft disk (101), and are provided in several groups.

3. The planetary deflection grinding device according to claim 1, characterized in that: The deflection rods (103) are distributed in a row on the lower end surface where the power head (102) is located.

4. The planetary deflection grinding device according to claim 1, characterized in that: The first vector direction, the second vector direction and the third vector direction are all circular motions.

5. The planetary deflection grinding device according to claim 1, characterized in that: The rotation speed of the deflection rod (103) in the third vector direction is S1, the rotation speed of the power head (102) in the second vector direction is S2, the rotation speed of the spindle disk (101) in the first vector direction is S3, the radius of the upper specification deflection rod (103) is π1, and the current specification radius is π1 ， , at this time, the current linear velocity of the grinding member (1) is V; That is, V = {S1 ， = S1 / π1 * π1 ， S2 ， =S2 / π1*π1 ， S3 ， =S3 / π1*π1 ， }。 6. The planetary deflection grinding device according to claim 1, characterized in that: The grinding piece (1) moves in the up and down directions, so that the grinding head (104) where the deflection rod (103) is located is immersed in the fluid abrasive contained in the abrasive tank (106).

7. The planetary deflection grinding device according to claim 1, characterized in that: The abrasive tank (106) moves in the up and down directions, so that the grinding head (104) where the deflection rod (103) is located is immersed in the fluid abrasive contained in the abrasive tank (106).

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