Diamond grinding wheel for grinding lead screw

Abstract

The utility model belongs to the technical field of diamond grinding wheels, and particularly relates to a diamond grinding wheel for grinding a lead screw. The grinding wheel comprises a base body and a grinding layer. Wherein the grinding layer comprises grinding teeth, a first grinding groove and a second grinding groove; the first grinding groove and the second grinding groove are symmetrically formed in the two sides of the grinding teeth and are in smooth connection with the grinding teeth. According to the diamond grinding wheel for grinding the lead screw, the thread groove grinding part and the thread body grinding part are arranged on the grinding wheel at the same time, continuous thread grooves and thread body segments on the lead screw can be ground, and the grinding wheel is matched with translation of the grinding wheel and rotation of the lead screw and the grinding wheel; and grinding machining of all parts on the spiral groove of the lead screw can be completed at the same time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of diamond grinding wheels, and particularly relates to a diamond grinding wheel for grinding a screw rod. BACKGROUND

[0002] Ball screws are high-precision transmission elements that convert rotary motion into linear motion and are widely used in numerical control machine tools, robots, aerospace, etc. The machining process involves key processes such as high-precision thread machining, heat treatment, and assembly. Thread machining is generally fine ground by high-precision thread grinding machines in combination with diamond grinding wheels to ensure pitch, profile, and lead accuracy.

[0003] A diamond grinding wheel generally includes a working layer, a transition layer, and a base; the working layer is fixed (such as sintered) on the base through the transition layer. During use, the base is connected to the grinding tool spindle, and the grinding force is generated by the rotation of the working layer.

[0004] The high-precision thread structure on the ball screw includes both the thread groove and the thread body; both the groove structure and the edge structure need to be fine ground to meet the technical requirements of precise transmission. The existing diamond grinding wheel generally uses an alternating process to complete the groove grinding and edge grinding, and the grinding efficiency and precision need to be improved. CONTENT OF THE INVENTION

[0005] Therefore, the application provides a diamond grinding wheel for grinding a screw rod to solve all or part of the technical problems described in the background section.

[0006] The innovative concept of the application is that a smooth connection thread groove grinding part and a thread body grinding part are provided on the grinding wheel, so that the corresponding structures (thread groove and thread body) on the ball screw can be simultaneously machined.

[0007] The application provides a solution to solve the technical problems:

[0008] A diamond grinding wheel for grinding a screw rod includes a base and a grinding layer; characterized in that the grinding layer includes a grinding tooth, a first grinding groove, and a second grinding groove; the first grinding groove and the second grinding groove are symmetrically arranged on both sides of the grinding tooth and are smoothly connected with the grinding tooth.

[0009] During grinding, the grinding tooth extends into the screw thread groove, and the thread body on both sides of the thread groove is embedded in the first and second grinding grooves; through parallel movement of the grinding wheel parallel to the screw axis and self-rotation of the screw and the grinding wheel, the grinding and machining of each part on the screw thread groove can be simultaneously completed.

[0010] Further, the base is provided with a mounting hole.

[0011] Further, the base body is further provided with a plurality of radial flow channels; the plurality of radial flow channels are uniformly distributed around the axis on the base body.

[0012] Further, the grinding layer is further provided with a plurality of air holes; the plurality of air holes are uniformly distributed around the axis on the grinding layer and penetrate into the corresponding radial flow channels.

[0013] Further, the base body is provided with a grinding tooth base, a first grinding groove base, and a second grinding groove base; the grinding tooth, the first grinding groove, and the second grinding groove are respectively fixed on the grinding tooth base, the first grinding groove base, and the second grinding groove base. Preferably, the fixing mode can be sintering, bonding, or electroplating, etc.

[0014] Further, the grinding layer further comprises a first auxiliary grinding tooth and a second auxiliary grinding tooth; the first auxiliary grinding tooth and the second auxiliary grinding tooth are respectively arranged on the two sides of the first grinding groove and the second grinding groove and are respectively smoothly connected to the first grinding groove and the second grinding groove.

[0015] Further, the base body is further provided with a first auxiliary grinding tooth base and a second auxiliary grinding tooth base; the first auxiliary grinding tooth and the second auxiliary grinding tooth are respectively fixed on the first auxiliary grinding tooth base and the second auxiliary grinding tooth base.

[0016] Beneficial technical effects:

[0017] The diamond grinding wheel for grinding the lead screw disclosed in the application can grind the continuous thread groove and the thread body segment on the lead screw through the smoothly connected thread groove grinding part (grinding tooth, first auxiliary grinding tooth, and second auxiliary grinding tooth) and the thread body grinding part (first grinding groove and second grinding groove) on the grinding wheel, and can complete the grinding of each part on the lead screw thread groove at the same time by cooperating with the translation of the grinding wheel and the rotation of the lead screw and the grinding wheel.

[0018] The technical solutions and technical effects of the application will be described in detail in combination with the drawings and specific embodiments in the specification. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 : Structure schematic diagram of diamond grinding wheel for grinding lead screw;

[0020] Fig. 2 : Schematic diagram of lead screw grinding process;

[0021] FIGURE DESCRIPTION:

[0022] 1-Base body;

[0023] 11-Mounting hole, 12-Radial flow channel;

[0024] 2-Grinding layer;

[0025] 21-grinding tooth, 22-first grinding groove, 23-second grinding groove, 24-first auxiliary grinding tooth, 25-second auxiliary grinding tooth, 26-air hole. DETAILED DESCRIPTION

[0026] Please refer to Figs. 1-2 The disclosed diamond grinding wheel for ball screw grinding comprises a base 1 and a grinding layer 2.

[0027] The base 1 is used to support the grinding layer 2 and to assemble the grinding wheel to a grinding tool or machine through a mounting hole 11. The grinding layer 2 is used to generate grinding force through high-speed rotation of the grinding wheel.

[0028] The base 1 is usually made of aluminum alloy, steel or carbon fiber composite material. The grinding layer 2 is usually made of artificial or natural diamond particles (single crystal / poly crystal), binder, auxiliary agent, etc. The grinding layer 2 is fixed on the base 1 through a transition layer.

[0029] Generally, the part of the base 1 for bearing the grinding layer 2 has a structure and size consistent with the grinding layer 2.

[0030] The grinding layer 2 comprises a grinding tooth 21, a first grinding groove 22, a second grinding groove 23, a first auxiliary grinding tooth 24 and a second auxiliary grinding tooth 25. The first grinding groove 22 and the second grinding groove 23 are symmetrically and smoothly connected on both sides of the grinding tooth 21. The first auxiliary grinding tooth 24 and the second auxiliary grinding tooth 25 are respectively smoothly connected on both sides of the first grinding groove 22 and the second grinding groove 23.

[0031] The grinding tooth 21, the first auxiliary grinding tooth 24 and the second auxiliary grinding tooth 25 have the same structure and size and are consistent with the corresponding machined parts on the ball screw. The first grinding groove 22 and the second grinding groove 23 have the same structure and size and are consistent with the corresponding machined parts on the ball screw.

[0032] Consistent with the structure of the grinding layer 2, the base 1 is provided with a grinding tooth base, a first grinding groove base, a second grinding groove base, a first auxiliary grinding tooth base and a second auxiliary grinding tooth base. The grinding tooth 21, the first grinding groove 22, the second grinding groove 23, the first auxiliary grinding tooth 24 and the second auxiliary grinding tooth 25 are respectively fixed on the grinding tooth base, the first grinding groove base, the second grinding groove base, the first auxiliary grinding tooth base and the second auxiliary grinding tooth base. The fixing mode can be sintering, bonding or electroplating, etc.

[0033] In order to strengthen the heat dissipation and chip removal function of the grinding wheel, the base body 1 is further provided with a plurality of radial flow channels 12; the plurality of radial flow channels 12 are evenly distributed on the base body 1 around the grinding wheel axis. The grinding layer 2 is further provided with a plurality of air holes 26; the plurality of air holes 26 are evenly distributed on the grinding layer 2 around the grinding wheel axis and penetrate into the corresponding radial flow channels 12.

[0034] Grinding process and technical effects:

[0035] The grinding wheel is close to the screw; the grinding teeth 21, the first auxiliary grinding teeth 24 and the second auxiliary grinding teeth 25 extend into the thread grooves on the screw, and the corresponding threaded bodies on the screw are embedded into the first grinding groove 22 and the second grinding groove 23;

[0036] The screw starts to rotate, and at the same time, the grinding wheel rotates and moves parallel along the axis direction of the screw; the helical grooves and helical bodies on each segment of the screw are continuously and synchronously ground.

[0037] Therefore, the diamond grinding wheel for grinding the screw disclosed in the application can synchronously process the helical grooves and helical bodies, which helps to improve the grinding efficiency and grinding precision of the ball screw. In addition, the base body 1 and the grinding layer 2 are provided with air holes 26 and radial flow channels 12 that are connected to each other, which also helps to improve the heat dissipation and chip removal effect.

[0038] The technical solutions and technical effects of the application are described in detail above in combination with the drawings and specific embodiments. It should be noted that other embodiments can be developed by those skilled in the art on the basis of this; any simple modification and equivalent replacement without departing from the innovative concept of the application are covered by the application and belong to the protection scope of the patent.

Claims

1. A diamond grinding wheel for grinding screw, comprising a base (1), a grinding layer (2), characterized in that: the grinding layer (2) comprises a grinding tooth (21), a first grinding groove (22), and a second grinding groove (23) ; the first grinding groove (22) and the second grinding groove (23) are symmetrically arranged on both sides of the grinding tooth (21) and are smoothly connected with the grinding tooth (21).

2. The diamond grinding wheel for a ball screw according to claim 1, characterized in that: The base (1) is provided with a mounting hole (11). 3.The diamond grinding wheel for grinding screw according to claim 1, characterized in that: the base (1) is provided with a grinding tooth base, a first grinding groove base, and a second grinding groove base; the grinding tooth (21), the first grinding groove (22), and the second grinding groove (23) are respectively fixed on the grinding tooth base, the first grinding groove base, and the second grinding groove base. 4.The diamond grinding wheel for grinding screw according to claim 1, characterized in that: the grinding layer (2) further comprises a first auxiliary grinding tooth (24) and a second auxiliary grinding tooth (25) ; the first auxiliary grinding tooth (24) and the second auxiliary grinding tooth (25) are respectively arranged on both sides of the first grinding groove (22) and the second grinding groove (23) and are respectively smoothly connected to the first grinding groove (22) and the second grinding groove (23). 5.The diamond grinding wheel for grinding screw according to claim 4, characterized in that: the base (1) is further provided with a first auxiliary grinding tooth base and a second auxiliary grinding tooth base; the first auxiliary grinding tooth (24) and the second auxiliary grinding tooth (25) are respectively fixed on the first auxiliary grinding tooth base and the second auxiliary grinding tooth base. 6.The diamond grinding wheel for grinding screw according to claim 1, characterized in that: the base (1) is further provided with a plurality of radial flow channels (12) ; the plurality of radial flow channels (12) are uniformly distributed around the axis on the base (1). 7.The diamond grinding wheel for grinding screw according to claim 6, characterized in that: the grinding layer (2) is further provided with a plurality of air holes (26) ; the plurality of air holes (26) are uniformly distributed around the axis on the grinding layer (2) and penetrate into the corresponding radial flow channels (12).

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