Ball screw raceway normal section profile hardening sensor

Abstract

The present invention specifically relates to a ball screw raceway normal section profile quenching inductor, comprising a base and a coil, wherein the base is composed of a pole plate, a copper tube and a connecting seat, the copper tube is arranged on the pole plate, and the copper tube and the pole plate are both fixedly connected to the connecting seat; the coil is composed of a rotating sleeve, a left connecting copper tube, a right connecting copper tube, a left short tube, a right short tube and a profile coil, and the left connecting copper tube and the right connecting copper tube are both fixedly connected to the rotating sleeve, one end of the left short tube is connected to the left connecting copper tube, the other end of the left short tube is connected to one end of the profile coil, the other end of the profile coil is connected to one end of the right short tube, and the other end of the right short tube is connected to the right connecting copper tube; the rotating sleeve is arranged on the connecting seat, and the rotating sleeve is fixedly connected to the connecting seat. The ball screw raceway normal section profile quenching inductor can not only meet the hardening layer requirements, but also ensure the depth and shape requirements, and is suitable for profile induction quenching of ball screws with different pitches, and has a reasonable structure and is easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of heat treatment processing equipment, and in particular relates to a ball screw raceway normal section profile quenching sensor. Background Art

[0002] Ball screws are the core transmission components of CNC machine tools, automation equipment, etc. As machine tools develop towards high rigidity, large size, and heavy load, ball screws, as their main transmission components, require greater and greater load-bearing capacity, and the diameter of the screw and the size of the steel ball directly determine the load-bearing capacity of the ball screw. With the increase in the diameter of the screw and the steel ball, the manufacturing difficulty is also increasing. The normal section of the ball screw raceway is a circular arc groove, and the effective hardened layer depth is generally required to be greater than the diameter of the steel ball used. The hardness of the thread raceway is above 58HRC, and quenching has become the biggest problem in manufacturing large screws. The traditional quenching method for ball screws is to use a special quenching coil sleeve on the outer circle for medium-frequency quenching. Due to the limitations of the processing method and quenching power supply, this method cannot meet the quenching layer depth requirements of screws with large steel ball diameters (steel ball diameters greater than Φ12.7), and there is no special equipment suitable for quenching the raceways of large diameter and large steel ball screws in China, which seriously restricts the large-scale production of domestic large and heavy-loaded ball screws. Summary of the invention

[0003] In order to solve the problem that the existing technology cannot meet the quenching requirements of large steel ball diameter lead screws, the present invention provides a ball screw raceway normal section profiling quenching sensor, which can perform profiling induction quenching on the raceway portion of a large steel ball diameter ball screw along the normal section, increase the depth of the lead screw hardening layer, and solve the quenching processing problem of large and heavy-loaded lead screws. By replacing the profiling coil, the device can also be used for the quenching processing of lead screws with other cross-sectional shapes. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0004] A ball screw raceway normal section profile quenching inductor, comprising a base and a coil, wherein the base is composed of a pole plate, a copper tube and a connecting seat, the copper tube is arranged on the pole plate, and the copper tube and the pole plate are both fixedly connected to the connecting seat;

[0005] The coil is composed of a rotating sleeve, a left connecting copper tube, a right connecting copper tube, a left short tube, a right short tube and a contour coil. The left connecting copper tube and the right connecting copper tube are both fixedly connected to the rotating sleeve. One end of the left short tube is connected to the left connecting copper tube, and the other end of the left short tube is connected to one end of the contour coil. The other end of the contour coil is connected to one end of the right short tube, and the other end of the right short tube is connected to the right connecting copper tube.

[0006] The rotating sleeve is arranged on the connecting seat, and the rotating sleeve is fixedly connected to the connecting seat.

[0007] Furthermore, a magnetic conductor is arranged inside the above-mentioned contour coil, and a water spray hole is arranged at the lower outer side of the contour coil.

[0008] Furthermore, the above-mentioned contour coil includes an upper effective coil, a lower effective coil and a curved tube, one end of the upper effective coil is connected to the left short tube, the other end of the upper effective coil is connected to one end of the curved tube, the other end of the curved tube is connected to one end of the lower effective coil, and the other end of the lower effective coil is connected to the right short tube;

[0009] A magnetic conductor is arranged inside the upper effective circle, and a water spray hole is arranged outside the lower effective circle.

[0010] Furthermore, the shape of the above-mentioned contour coil is the same as the normal section of the thread raceway of the workpiece.

[0011] Furthermore, the pole plate comprises a left pole plate and a right pole plate which are bilaterally symmetrical, the left pole plate and the right pole plate are separated by an insulating layer, and the left pole plate and the right pole plate are fixedly connected by fastening screws;

[0012] The copper tube comprises a left copper tube and a right copper tube, wherein the left copper tube is fixed on the left pole plate, and the right copper tube is fixed on the right pole plate;

[0013] The connecting seat comprises a left connecting seat and a right connecting seat which are symmetrical with each other. The left connecting seat and the right connecting seat are separated by an insulating layer. The left connecting seat is fixedly connected to both the left copper tube and the left pole plate, and the right connecting seat is fixedly connected to both the right copper tube and the right pole plate.

[0014] Furthermore, the above-mentioned ball screw raceway normal section profile quenching sensor is characterized in that the left connecting seat includes a left connecting plate and a left connecting column, one side of the left connecting plate is fixedly connected to the left copper tube and the left pole plate, and the other side of the left connecting plate is fixedly connected to the left connecting column;

[0015] The right connecting seat includes a right connecting plate and a right connecting column. One side of the right connecting plate is fixedly connected to the right copper tube and the right pole plate, and the other side of the right connecting plate is fixedly connected to the right connecting column.

[0016] Furthermore, the rotating sleeve is a concave structure, and the inner wall of the rotating sleeve is a concave arc shape;

[0017] The rotating sleeve comprises a left-rotating sleeve and a right-rotating sleeve, and the left-rotating sleeve and the right-rotating sleeve are separated by an insulating layer;

[0018] The left-rotating sleeve is arranged on the left connecting column, and the right-rotating sleeve is arranged on the right connecting column. The left-rotating sleeve and the right-rotating sleeve can rotate leftward or rightward along the symmetry line of the pole plate and are fixedly connected by fastening screws.

[0019] Furthermore, the left pole plate is L-shaped, the left copper tube is fixed on one side of the left pole plate close to the left connecting seat, and the left copper tube is arranged in a folded line;

[0020] The right pole plate is L-shaped, the right copper tube is fixed on one side of the right pole plate close to the right connecting seat, and the right copper tube is arranged in a folded line.

[0021] Furthermore, the connecting seat is located in the middle of the length direction of the electrode plate.

[0022] Furthermore, the left connecting copper tube and the right connecting copper tube are separated by an insulating layer, and the left connecting copper tube and the right connecting copper tube are symmetrically fixed.

[0023] Beneficial effects of the present invention:

[0024] 1. The ball screw raceway normal section profiling quenching inductor of the present invention comprises a base and a coil, wherein the base is composed of a pole plate, a copper tube and a connecting seat, and the coil is composed of a rotating sleeve, a left connecting copper tube, a right connecting copper tube, a left short tube, a right short tube and a profiling coil, and the rotating sleeve fixed sleeve is arranged on the connecting seat. When installing, the angle between the coil and the pole plate symmetry line is adjusted so that the gap between the profiling coil of the quenching inductor and each part of the arc of the ball screw ball thread raceway is the same, so as to ensure that a uniform hardened layer is obtained;

[0025] 2. The ball screw raceway normal section profile quenching inductor of the present invention can meet the hardening layer requirements and ensure the depth and shape requirements through the functions of the arranged pole plate, connecting copper tube, connecting seat, rotating sleeve, profile coil and magnetic conductor, and is suitable for profile induction quenching of ball screws with different pitches. The device has a reasonable structure and is easy to use;

[0026] 3. The ball screw raceway normal section profiling quenching sensor of the present invention can replace the shapes of the upper effective circle and the lower effective circle of the profiling coil, so that the device can also be used for quenching processing of screws with other cross-sectional shapes.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the base of this embodiment.

[0029] Figure 2 Schematic diagram of the structure of the coil of this embodiment.

[0030] Figure 3 It is the enlarged view A of the contour coil of this embodiment.

[0031] Figure 4 It is a structural schematic diagram of the normal cross-section profile quenching sensor of the ball screw raceway of this embodiment.

[0032] Figure 5 This is a cross-sectional AA diagram of the connection between the base and the coil in this embodiment.

[0033] In the figure: 1, pole plate; 2, copper tube; 3, connecting seat; 4, rotating sleeve; 5-1, left connecting copper tube; 5-2, right connecting copper tube; 6-1, left short tube; 6-2, right short tube; 7, contour coil; 8, magnetic conductor; 9, water spray hole; 10, fastening screw. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] In the description of this embodiment, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this embodiment.

[0036] In this embodiment, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0037] In order to solve the problem that the existing technology cannot meet the quenching requirements of large steel ball diameter screws, this embodiment provides a ball screw raceway normal section profiling quenching sensor, referring to Figure 1-Figure 5 The device belongs to an induction quenching device for quenching shaft parts, and specifically relates to a contour induction quenching device that imitates the normal section of the ball screw raceway part. The device is a special quenching device for quenching ball screws with different screw diameters, different steel ball diameters, and different helix angles.

[0038] Reference Figure 1-Figure 4The ball screw raceway normal section profile quenching sensor of this embodiment includes a base and a coil. The base is composed of a plate 1, a copper tube 2 and a connecting seat 3. The copper tube 2 is fixed on the plate 1, and the connecting seat 3 is fixedly connected to the copper tube 2 and the plate 1. The plate 1 includes a left plate and a right plate that are symmetrical on both sides. The left plate and the right plate are separated by an insulating layer, and the left plate and the right plate are fixedly connected by a fastening screw 10. The left plate and the right plate of this embodiment are fixedly connected at the upper and lower parts by fastening screws, and are firmly fixed.

[0039] The copper tube 2 includes a left copper tube and a right copper tube, the left copper tube is fixed on the left pole plate, and the right copper tube is fixed on the right pole plate. The connecting seat 3 includes a left connecting seat and a right connecting seat that are symmetrical on both sides, the left connecting seat and the right connecting seat are separated by an insulating layer, the left connecting seat is fixedly connected to both the left copper tube and the left pole plate, and the right connecting seat is fixedly connected to both the right copper tube and the right pole plate. The copper tube, the pole plate and the connecting seat of this embodiment are fixed by welding.

[0040] The left pole plate of this embodiment is L-shaped, the left copper tube is fixed on the side of the left pole plate close to the left connecting seat, and the left copper tube is arranged in a zigzag line; the right pole plate is L-shaped, the right copper tube is fixed on the side of the right pole plate close to the right connecting seat, and the right copper tube is arranged in a zigzag line. When in use, cooling water cools the pole plate and the connecting seat through the copper tube, and the left copper tube and the right copper tube are arranged in a zigzag line, which can improve the cooling efficiency of the pole plate and the connecting seat. The connecting seat 3 of this embodiment is located in the middle position of the length direction of the pole plate 1, which contributes to the stability and rationality of the entire structure.

[0041] The left connecting seat of the present embodiment includes a left connecting plate and a left connecting column, one side of the left connecting plate is fixedly connected to the left copper tube and the left pole plate, and the other side of the left connecting plate is fixedly connected to the left connecting column. The right connecting seat includes a right connecting plate and a right connecting column, one side of the right connecting plate is fixedly connected to the right copper tube and the right pole plate, and the other side of the right connecting plate is fixedly connected to the right connecting column. The left connecting plate and the left connecting column of the present embodiment are integrally formed, and the right connecting plate and the right connecting column are integrally formed, which are strong and durable.

[0042] The coil of the present embodiment is made up of rotating sleeve 4, left connecting copper tube 5-1, right connecting copper tube 5-2, left short tube 6-1, right short tube 6-2 and profiling coil 7, left connecting copper tube 5-1 and right connecting copper tube 5-2 are all fixedly connected with rotating sleeve 4, one end of left short tube 6-1 is communicated with left connecting copper tube 5-1, the other end of left short tube 6-1 is communicated with one end of profiling coil 7, the other end of profiling coil 7 is communicated with one end of right short tube 6-2, and the other end of right short tube 6-2 is communicated with right connecting copper tube 5-2. The inside of profiling coil 7 is provided with magnetic conductor 8, and the lower outside of profiling coil 7 is provided with water spray hole 9. Left connecting copper tube 5-1 and right connecting copper tube 5-2 are separated by insulating layer, and left connecting copper tube 5-1 and right connecting copper tube 5-2 are symmetrically fixed. The insulating layer of the present embodiment can be insulating plate, insulating glue or other insulating materials.

[0043] The rotating sleeve 4 is sleeved on the connecting seat 3, and the rotating sleeve 4 is fixedly connected to the connecting seat 3. The rotating sleeve of this embodiment is fixed to the connecting seat by fastening screws. During installation, the angle between the coil and the symmetry line of the plate is adjusted so that the gap between the inductor contour coil and the arc of the ball screw ball thread raceway is the same, so as to ensure a uniform hardened layer. Figure 5 The coil of this embodiment can be rotated 0°-60° to the left or right along the symmetry line of the pole plate, and then fixedly connected by tightening screws after rotation.

[0044] The shape of the profiling coil 7 is the same as the normal section of the workpiece thread raceway. The profiling coil 7 of this embodiment includes an upper effective circle, a lower effective circle and a curved pipe, one end of the upper effective circle is connected to the left short pipe, the other end of the upper effective circle is connected to one end of the curved pipe, the other end of the curved pipe is connected to one end of the lower effective circle, and the other end of the lower effective circle is connected to the right short pipe. A magnetizer 8 is arranged inside the upper effective circle, and a water spray hole 9 is arranged outside the lower effective circle. The magnetizer of this embodiment is embedded in the upper effective circle, and the magnetizer faces the direction of the workpiece. The ball screw raceway normal section profiling quenching inductor changes the direction of the magnetic field through the magnetizer, improves the heating efficiency, and realizes induction heating of the part surface; the cooling water cools the heated surface of the part through the water spray hole to realize part quenching.

[0045] When in use, cooling water enters the left short pipe through the left connecting copper pipe, then enters the upper effective circle, then enters the elbow, and then enters the lower effective circle. During quenching, the water spray holes on the lower outer side of the lower effective circle cool the heated part of the ball screw ball thread raceway arc to complete the quenching. Therefore, it can meet the hardening layer requirements and ensure the depth and shape requirements. It is suitable for induction quenching of ball screws with different pitches. The device has a reasonable structure and is easy to use.

[0046] The shape of the upper effective circle and the lower effective circle is the same as the normal section of the workpiece thread raceway. In this embodiment, it is an arc shape with a radius of R6.35-R20. When in use, the upper effective circle and the lower effective circle of different shapes can be replaced according to the shape of the workpiece, and can be used for quenching processing of screws with other cross-sectional shapes.

[0047] The rotating sleeve 4 of this embodiment is a concave structure, and the inner wall of the rotating sleeve 4 is a concave arc shape. The rotating sleeve 4 includes a left rotating sleeve and a right rotating sleeve, and the left rotating sleeve and the right rotating sleeve are separated by an insulating layer. The left rotating sleeve is arranged on the left connecting column, and the right rotating sleeve is arranged on the right connecting column, and the left rotating sleeve and the right rotating sleeve can rotate left or right along the symmetry line of the pole plate 1, and are fixedly connected by fastening screws 10. In this embodiment, the upper and lower parts of the left rotating sleeve and the right rotating sleeve are respectively fixedly connected by fastening screws, and the fixing is firm, and the rotating sleeve can realize 0°-60° rotation to the left or right along the symmetry line of the pole plate, which is suitable for the contour induction hardening of ball screws with different helix angles (4°-52°), different outer diameters (φ50-φ400), and different raceway arcs (R6.35-R20).

[0048] The left connecting copper tube of this embodiment is welded and fixed on the left rotating sleeve, and the right connecting copper tube is welded and fixed on the right rotating sleeve. One end of the left short tube is welded and fixed to the left connecting copper tube, the other end of the left short tube is welded and fixed to one end of the upper effective circle, the other end of the upper effective circle is welded and fixed to one end of the bent tube, the other end of the bent tube is welded and fixed to one end of the lower effective circle, the other end of the lower effective circle is welded and fixed to one end of the right short tube, and the other end of the right short tube is welded and fixed to the right connecting copper tube.

[0049] The ball screw raceway normal section profiling quenching inductor of this embodiment can meet the hardening layer requirements and ensure the depth and shape requirements through the functions of the arranged pole plate, connecting copper tube, connecting seat, rotating sleeve, profiling coil and magnetic conductor, and is suitable for profiling induction quenching of ball screws with different pitches. The device has a reasonable structure and is easy to use. It is suitable for special induction quenching device for profiling the normal section of the raceway of large and heavy-loaded ball screws.

[0050] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A ball screw raceway normal section profile quenching sensor, comprising a base and a coil, characterized in that: The base is composed of an electrode plate (1), a copper tube (2) and a connecting seat (3); the copper tube (2) is fixed on the electrode plate (1); and the connecting seat (3) is fixedly connected to the copper tube (2) and the electrode plate (1); The coil is composed of a rotating sleeve (4), a left connecting copper tube (5-1), a right connecting copper tube (5-2), a left short tube (6-1), a right short tube (6-2) and a contour coil (7); the left connecting copper tube (5-1) and the right connecting copper tube (5-2) are both fixedly connected to the rotating sleeve (4); one end of the left short tube (6-1) is connected to the left connecting copper tube (5-1); the other end of the left short tube (6-1) is connected to one end of the contour coil (7); the other end of the contour coil (7) is connected to one end of the right short tube (6-2); and the other end of the right short tube (6-2) is connected to the right connecting copper tube (5-2); The rotating sleeve (4) is sleeved on the connecting seat (3), and the rotating sleeve (4) is fixedly connected to the connecting seat (3); The contour coil (7) comprises an upper effective coil, a lower effective coil and a curved tube, one end of the upper effective coil is connected to the left short tube, the other end of the upper effective coil is connected to one end of the curved tube, the other end of the curved tube is connected to one end of the lower effective coil, and the other end of the lower effective coil is connected to the right short tube; A magnetic conductor (8) is arranged inside the upper effective circle, and a water spray hole (9) is arranged outside the lower effective circle; The pole plate (1) comprises a left pole plate and a right pole plate which are bilaterally symmetrical, the left pole plate and the right pole plate being separated by an insulating layer, and the left pole plate and the right pole plate being fixedly connected by a fastening screw (10); The copper tube (2) comprises a left copper tube and a right copper tube, the left copper tube is fixed on the left pole plate, and the right copper tube is fixed on the right pole plate; The connecting seat (3) comprises a left connecting seat and a right connecting seat which are symmetrical with each other, the left connecting seat and the right connecting seat being separated by an insulating layer, the left connecting seat being fixedly connected to both the left copper tube and the left pole plate, and the right connecting seat being fixedly connected to both the right copper tube and the right pole plate.

2. The ball screw raceway normal section profile quenching sensor according to claim 1, characterized in that: The shape of the profiling coil (7) is the same as the normal cross-section of the workpiece thread raceway.

3. The ball screw raceway normal section profile quenching sensor according to claim 1, characterized in that: The left connecting seat comprises a left connecting plate and a left connecting column, one side of the left connecting plate is fixedly connected to the left copper tube and the left pole plate, and the other side of the left connecting plate is fixedly connected to the left connecting column; The right connecting seat includes a right connecting plate and a right connecting column. One side of the right connecting plate is fixedly connected to the right copper tube and the right pole plate, and the other side of the right connecting plate is fixedly connected to the right connecting column.

4. The ball screw raceway normal section profile quenching sensor according to claim 3, characterized in that: The rotating sleeve (4) is a concave structure, and the inner wall of the rotating sleeve (4) is a concave arc shape; The rotating sleeve (4) comprises a left-rotating sleeve and a right-rotating sleeve, and the left-rotating sleeve and the right-rotating sleeve are separated by an insulating layer; The left-rotating sleeve is arranged on the left connecting column, and the right-rotating sleeve is arranged on the right connecting column. The left-rotating sleeve and the right-rotating sleeve can rotate leftward or rightward along the symmetry line of the pole plate (1) and are fixedly connected by fastening screws (10).

5. The ball screw raceway normal section profile quenching sensor according to claim 1, characterized in that: The left pole plate is L-shaped, the left copper tube is fixed on one side of the left pole plate close to the left connecting seat, and the left copper tube is arranged in a folded line; The right pole plate is L-shaped, the right copper tube is fixed on one side of the right pole plate close to the right connecting seat, and the right copper tube is arranged in a folded line.

6. The ball screw raceway normal section profile quenching sensor according to claim 1, characterized in that: The connection seat (3) is located in the middle of the length direction of the electrode plate (1).

7. The ball screw raceway normal section profile quenching sensor according to claim 1, characterized in that: The left connecting copper tube (5-1) and the right connecting copper tube (5-2) are separated by an insulating layer, and the left connecting copper tube (5-1) and the right connecting copper tube (5-2) are symmetrically fixed.

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