A machine tool detector for verticality of inner wall of workpiece

Abstract

The present invention discloses a machine tool measuring instrument for the verticality of the inner wall of a workpiece, comprising: a bracket, one end of the top surface of which is provided with a connecting shaft for fixing to a machine tool or a lathe; the other end of the bracket is provided with a gauge setting groove; a gauge, comprising a gauge rod and a gauge head and a movable side head provided at both ends of the gauge rod, the movable side head being provided perpendicular to the gauge rod; the gauge rod being provided in the gauge setting groove; a gauge fixing part provided on the outside of the gauge rod and detachably connected to the bracket, the gauge fixing part being used to fix the gauge rod to the bracket. In the present invention, the gauge is provided in the gauge setting groove of the bracket through the gauge fixing part, and is connected to the machine tool or lathe through the bracket, so that the machine tool or lathe drives the gauge to move, thereby realizing the detection of the verticality of the inner wall of the workpiece, without the need for manual operation by the operator, thereby reducing the difficulty of operation for the operator and the requirement for the operator's operating proficiency.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece verticality measuring devices, and in particular to a machine tool measuring instrument for the verticality of a workpiece inner wall. Background Art

[0002] Currently, in the production process of workpieces, the verticality of the narrow inner wall of the workpiece is usually measured by lever dial indicator or calibrated by the "hook line method". However, the traditional lever dial indicator detection method is only applicable to products with shallow closed cavities. When inspecting deep cavity workpieces, the scale value on the lever dial indicator cannot be observed. The calibration "hook line method" relies on visually inspecting the contact gap between the stylus head and the inner wall of the deep cavity to judge the accuracy of the calibration. This method not only has low calibration accuracy and slow calibration speed, but is also prone to positive calibration deviation. In addition, some factories now use 3D grating measuring instruments to detect the verticality of workpieces. However, the operation of 3D grating measuring instruments requires high technical requirements, requires special personnel to operate, and the operation is complicated and tedious. Therefore, it is impossible for a parts processing master to use a 3D grating measuring instrument for each workpiece he processes. This not only wastes time but also greatly reduces construction efficiency.

[0003] In view of this, there is an urgent need to improve the existing workpiece verticality measuring device to improve the workpiece inner wall verticality measurement efficiency and part processing efficiency, and reduce the cost and operation complexity of the workpiece inner wall verticality measuring device. Summary of the Invention

[0004] In view of the above-mentioned defects, the purpose of the present invention is to provide a workpiece inner wall verticality machine tool measuring instrument to solve the problems of complex operation, low measurement accuracy, low measurement efficiency and low construction efficiency of parts processing of existing workpiece verticality measuring devices.

[0005] To this end, the present invention provides a workpiece inner wall verticality measuring instrument for machine tools, comprising:

[0006] The bracket has a connecting shaft on one end of its top surface for fixing to a machine tool or lathe; the other end of the bracket has a gauge setting slot;

[0007] A gauge, comprising a gauge rod and gauge heads and movable side heads arranged at both ends of the gauge rod, wherein the movable side heads are arranged perpendicular to the gauge rod; the gauge rod is arranged in the gauge setting slot;

[0008] A meter fixing part is arranged on the outside of the meter rod and is detachably connected to the bracket. The meter fixing part is used to fix the meter rod on the bracket.

[0009] In the above technical solution, preferably, a connecting shaft hole is provided on the top surface of the bracket, a locking bolt hole is provided on the side surface of the bracket, the locking bolt hole is communicated with the connecting shaft hole, and a locking bolt is provided in the locking bolt hole;

[0010] The lower end of the connecting shaft is provided with an annular locking groove, the lower end of the connecting shaft is rotatably set in the connecting shaft hole, the end of the locking bolt is set in the locking groove and abuts against the connecting shaft; the side surface of the upper part of the connecting shaft is provided with a positioning plane.

[0011] In the above technical solution, preferably, a gauge handle is provided on the upper part of the gauge rod, the gauge setting groove is a V-shaped groove, and the outer diameter of the gauge handle is adapted to the V-shaped groove.

[0012] In the above technical solution, preferably, the meter fixing member includes:

[0013] A fixing plate is arranged on the outer circumferential surface of the gauge rod, wherein the fixing plate and the gauge setting groove form a gauge rod fixing groove adapted to the gauge rod;

[0014] A connecting plate is extended along both sides of the fixed plate, and a first fastening bolt hole is provided on the connecting plate. Second fastening bolt holes are provided on both sides of the gauge setting groove, and the second fastening bolt holes are provided on the end face of the bracket; the fastening bolt passes through the first fastening bolt hole and is connected with the second fastening bolt hole.

[0015] In the above technical solution, preferably, the fixing plate is arc-shaped.

[0016] In the above technical solution, preferably, the gauge is an internal diameter dial gauge standard measuring tool.

[0017] In the above scheme, preferably, the bracket includes a bracket transverse plate and a bracket vertical plate arranged at the end of the bracket transverse plate, the meter fixing groove is arranged on the end face of the bracket vertical plate, and the bracket transverse plate and the bracket vertical plate are perpendicular to each other.

[0018] In the above technical solution, preferably, reinforcing ribs are provided on the top and bottom surfaces of the bracket transverse plate, and two ends of the reinforcing ribs are respectively provided on the bracket transverse plate and the bracket vertical plate.

[0019] In the above technical solution, preferably, a shaft sleeve is provided on the spindle tool holder or lathe tool holder of the machine tool, the inner wall of the shaft sleeve is adapted to the outer wall of the connecting shaft, and a connecting shaft fixing bolt is provided on the side of the shaft sleeve and passes through the inner wall of the shaft sleeve, and the connecting fixing bolt rests on the positioning plane.

[0020] In the above technical solution, preferably, the connecting shaft and the bracket are made of 40Cr material, and the meter fixing part is made of stainless steel material.

[0021] As can be seen from the above technical solution, the workpiece inner wall verticality machine tool measuring instrument provided by the present invention is used to detect the verticality of the workpiece inner wall. Compared with the existing technology, the present invention has the following beneficial effects:

[0022] First of all, the workpiece inner wall verticality machine tool detector has a simple structure, including a bracket and a scale fixing part and a scale fixed to the bracket by the scale fixing part. A connecting shaft is provided at one end of the bracket, which is fixed to the machine tool by the connecting shaft. The scale is set at the other end of the bracket. The scale is driven up and down by the machine tool to measure the inner wall of the workpiece, which is not affected by the depth of the inner wall of the workpiece. The present invention is easy to operate and performs automatic measurement through the machine tool. It does not need to be affected by the proficiency of the measurement operator, thereby improving the accuracy and efficiency of the measurement.

[0023] Secondly, the measuring instrument's scale can use existing standard measuring tools, and the bracket and scale fixings can be made of steel commonly used in workpiece production. The factory does not need to introduce additional tools such as 3D grating measuring instruments to measure verticality, which greatly reduces the cost of workpiece inspection.

[0024] Finally, in one embodiment of the present invention, the gauge setting groove on the bracket is a V-shaped groove, and the fixing plate of the gauge fixing part is arc-shaped, so that gauge rods with different diameters can be installed on the bracket, and the gauge can be replaced according to the actual construction situation and usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 Schematic diagram of the structure of the machine tool measuring instrument for the verticality of the inner wall of a workpiece in the present invention;

[0027] Figure 2 A schematic structural diagram of another angle of the workpiece inner wall verticality measuring instrument of the present invention;

[0028] Figure 3 A side view of the connecting shaft of the present invention;

[0029] Figure 4 Schematic diagram of the structure of the bracket in the present invention;

[0030] Figure 5 Schematic diagram of the structure of the scale in the present invention;

[0031] Figure 6 A top view of the meter fixing member of the present invention;

[0032] Figure 7 Schematic diagram of the workpiece inner wall verticality measuring instrument of the present invention working on a machine tool;

[0033] Figure 8 The figure is a schematic diagram of the workpiece inner wall verticality measuring instrument of the present invention working on a machine tool.

[0034] Figure 1-8 In the figure, the corresponding relationship between the parts is as follows:

[0035] Bracket 1, scale 2, scale fixing part 3, connecting shaft 4, fastening bolt 5, spindle tool holder 6, lathe tool holder 7, connecting shaft fixing bolt 8, workpiece 9,

[0036] Meter setting slot 11, bracket horizontal plate 12, bracket vertical plate 13, reinforcing rib 14, connecting shaft hole 15, locking bolt hole 16, locking bolt 17, second fastening bolt hole 18,

[0037] Gauge rod 21, gauge head 22, movable side head 23, gauge handle 24,

[0038] Fixed plate 31, connecting plate 32, first fastening bolt hole 33,

[0039] Locking groove 41, positioning plane 42,

[0040] Machine tool platform 61, lathe chuck 71. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] The implementation principle of the present invention is:

[0043] The gauge is set in the gauge setting slot of the bracket through the gauge fixing part, and is connected to the machine tool or lathe through the bracket, so that the machine tool or lathe drives the moving side head of the gauge to move relative to the inner wall of the workpiece, thereby realizing the detection of the verticality of the inner wall of the workpiece.

[0044] The solution provided by the present invention does not require manual operation by the operator, reduces the operating difficulty and the requirement for the operator's operating proficiency, and has the advantages of simple operation, high accuracy of measurement results, and low measurement cost.

[0045] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0046] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] In addition, the terms in this document, such as "inside, outside", "front, back", "left, right", "vertical, horizontal", "top, bottom", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be understood as limitations on this application.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0049] Specific embodiment 1.

[0050] See Figure 1 and Figure 2 ,Should Figure 1 and Figure 2 Schematic diagram of the structure of the machine tool measuring instrument for the verticality of the inner wall of the workpiece described in this embodiment.

[0051] like Figure 1 and Figure 2 As shown, the workpiece inner wall verticality measuring instrument provided by the present invention includes a bracket 1, a gauge 2 and a gauge fixing part 3.

[0052] A connecting shaft 4 is provided on one end of the top surface of the bracket 1 for fixing to a machine tool or a lathe. A gauge setting slot 11 is provided on the other end of the bracket 1.

[0053] The gauge 2 includes a gauge rod 21, a gauge head 22 and a movable side head 23 disposed at both ends of the gauge rod 21. The movable side head 23 is disposed perpendicular to the gauge rod 21 and is used to extend into the workpiece cavity to detect the verticality of the side wall of the workpiece cavity. The gauge rod 21 is disposed in the gauge setting slot 11.

[0054] The meter fixing part 3 is arranged on the outside of the meter rod 21 and is detachably connected to the bracket 1. The meter fixing part 3 is used to fix the meter rod 21 on the bracket 1, so that the meter 2 moves with the bracket 1.

[0055] The scale 2 is set in the scale setting groove 11 of the bracket 1 through the scale fixing part 3, and is connected to the machine tool or lathe through the bracket 1, so that the machine tool or lathe drives the scale 2 to move, thereby realizing the detection of the verticality of the inner wall of the workpiece. No manual operation is required for the operator, which reduces the operation difficulty and the requirement for the operator's operation proficiency.

[0056] Specific embodiment 2.

[0057] This specific embodiment 2 is based on specific embodiment 1 and further optimizes and improves the movable limiting member therein.

[0058] See Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The bracket 1 includes a bracket transverse plate 12 and a bracket vertical plate 13. The bracket vertical plate 13 is arranged at the end of the bracket transverse plate 12, and the meter fixing groove 12 is arranged on the end surface of the bracket vertical plate 13 away from the bracket transverse plate 12. The bracket transverse plate 12 and the bracket vertical plate 13 are perpendicular to each other. Reinforcing ribs 14 are provided on the top and bottom surfaces of the bracket transverse plate 12. The two ends of the reinforcing ribs 14 are respectively arranged on the bracket transverse plate 12 and the bracket vertical plate 13. The reinforcing ribs 14 support the support vertical plate 13, thereby improving the supporting strength of the support vertical plate 13 and the firmness of the connection between the support transverse plate 12 and the support vertical plate 13.

[0059] A connecting shaft hole 15 is provided on the top surface of bracket 13, and a locking bolt hole 16 is provided on the side surface of bracket 13. Locking bolt hole 16 communicates with connecting shaft hole 15, and a locking bolt 17 is installed in locking bolt hole 16. An annular locking groove 41 is provided at the lower end of connecting shaft 4. The lower end of connecting shaft 4 is rotatably mounted in connecting shaft hole 15, and the end of locking bolt 17 is disposed in locking groove 41 and abuts connecting shaft 4. A positioning flat 42 is provided on the side surface of the upper portion of connecting shaft 4. By rotating connecting shaft 4 in connecting shaft hole 15, the position of positioning flat 42 on connecting shaft 4 is adjusted, and connecting shaft 4 is locked by locking bolt 17, thereby locking positioning flat 42 in place.

[0060] The gauge 2 is a standard internal diameter micrometer gauge. A gauge handle 24 is provided on the upper portion of the gauge rod 21. The gauge setting groove 11 is a V-shaped groove, and the outer diameter of the gauge handle 24 matches the V-shaped groove. The gauge fixture 3 includes a fixing plate 31 and a connecting plate 32. The fixing plate 31 is arranged on the outer circumference of the gauge rod 21. The fixing plate 31 is arc-shaped and, together with the gauge setting groove 11, forms a gauge rod fixing groove that matches the gauge rod 21. The connecting plate 32 extends along both sides of the fixing plate 31 and is provided with a first fastening bolt hole 33. Second fastening bolt holes 18 are provided on both sides of the gauge setting groove 11. The second fastening bolt holes 18 are provided on the end surface of the bracket vertical plate 13. The fastening bolt 5 passes through the first fastening bolt hole 33 and connects to the second fastening bolt hole 18. The connecting shaft 4 and the bracket are made of 40Cr material, and the gauge fixture 3 is made of stainless steel.

[0061] The meter setting groove 11 is a V-shaped groove, and the fixing plate 31 is arc-shaped, which is convenient for adapting to meters with meter rods of different specifications, thereby expanding the use range of the bracket 1 and reducing the cost of the detector.

[0062] A shaft sleeve is provided on the spindle tool holder 6 of the machine tool or the tool holder 7 of the lathe. The inner wall of the shaft sleeve is adapted to the outer wall of the connecting shaft 4. A connecting shaft fixing bolt 8 is provided on the side of the shaft sleeve through the inner wall of the shaft sleeve. The connecting fixing bolt 8 is against the positioning plane.

[0063] The working process of the present invention is as follows:

[0064] Before using the workpiece inner wall verticality machine tool detector, set the gauge rod 21 of the gauge 2 in the gauge setting groove 11, and set the gauge fixing part 3 on the outer side of the gauge rod 21, tighten the fastening bolt 5 to fix the gauge 2 on the bracket 1.

[0065] When using a CNC machine tool to detect the verticality of the inner wall of the workpiece, first lock the orientation of the machine tool spindle, put the tool handle 6 on the connecting shaft 4, then install the tool handle 6 on the machine tool spindle, and tighten the connecting shaft fixing bolt 8 so that it rests on the positioning plane 42 on the connecting shaft 4, place the workpiece 9 on the machine tool platform 61, start the machine tool, adjust the position of the gauge 2 in the workpiece 9, so that the movable side head 23 is set at the inner wall detection edge of the workpiece 9, and finally tighten the locking bolt 17. The bracket 1 is driven by the movement of the machine tool so that the movable side head 23 touches the inner wall of the workpiece 9, and then the machine tool drives the bracket 1 to move up and down, and the verticality of the inner wall of the workpiece is obtained by the change in the indication of the gauge head 22.

[0066] When the verticality of the inner wall of the workpiece is detected by a lathe, a tool holder 7 is installed on the lathe turret, the connecting shaft 4 is sleeved on the inner hole of the tool holder 7, and the fixing bolts on the tool holder 7 are tightened so that it rests on the positioning plane 42 on the connecting shaft 4, the workpiece is installed on the lathe chuck 71, and the position of the gauge 2 in the workpiece 9 is adjusted so that the movable side head 23 is set at the inner wall detection edge of the workpiece 9. Finally, the locking bolt 17 is tightened, the lathe is started, and the lathe feed shaft is moved so that the movable side head 23 touches the inner wall of the workpiece 9. Then, the tool holder 7 is driven to move horizontally by the lathe, and the verticality of the inner wall of the workpiece is obtained by the change in the indication of the gauge head 22.

[0067] Compared with the existing technology, the workpiece inner wall verticality machine tool measuring instrument provided by the present invention adopts the standard measuring tool of the inner diameter dial indicator as the measuring scale. The detector has a reasonable structural design and has low operation requirements for manual workers compared to the 3D grating measuring instrument. It is easy to use and can reflect the verticality of the inner wall through the numerical changes of the inner diameter dial indicator. The measurement is accurate, which provides a guarantee for the subsequent repair of the verticality of the workpiece.

[0068] The present invention can be fixed on the spindle tool holder of a CNC machine tool or the tool holder of a lathe through the positioning plane on the bracket rotating shaft and the bolts on the spindle tool holder of the machine tool or the tool holder of the lathe, so that the measuring instrument and the machine tool or the lathe have good integrity, and at the same time avoid the movable side head of the measuring instrument being affected by the start-up of the machine tool or the lathe, resulting in a decrease in its accuracy; the inside diameter dial indicator inside diameter gauge measuring device can be moved up and down on different mechanical equipment, is suitable for verticality detection of the inner walls of workpieces of different sizes and depths, and has a wider detection range.

[0069] Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of this application. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0070] As used herein, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0071] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the scope of protection of the present invention.

Claims

1. A machine tool measuring instrument for the verticality of the inner wall of a workpiece, characterized in that: include: The bracket has a connecting shaft on one end of its top surface for fixing to a machine tool or lathe; the other end of the bracket has a gauge setting slot; A gauge, comprising a gauge rod and gauge heads and movable side heads arranged at both ends of the gauge rod, wherein the movable side heads are arranged perpendicular to the gauge rod; the gauge rod is arranged in the gauge setting slot; A meter fixing part is arranged on the outside of the meter rod and is detachably connected to the bracket. The meter fixing part is used to fix the meter rod on the bracket.

2. The workpiece inner wall verticality measuring instrument for machine tools according to claim 1, characterized in that: A connecting shaft hole is provided on the top surface of the bracket, and a locking bolt hole is provided on the side surface of the bracket. The locking bolt hole is communicated with the connecting shaft hole, and a locking bolt is provided in the locking bolt hole. The lower end of the connecting shaft is provided with an annular locking groove, the lower end of the connecting shaft is rotatably set in the connecting shaft hole, the end of the locking bolt is set in the locking groove and abuts against the connecting shaft; the side surface of the upper part of the connecting shaft is provided with a positioning plane.

3. The workpiece inner wall verticality measuring instrument for machine tools according to claim 1, characterized in that: A gauge handle is provided on the upper portion of the gauge rod, the gauge setting groove is a V-shaped groove, and the outer diameter of the gauge handle is adapted to the V-shaped groove.

4. The workpiece inner wall verticality measuring instrument for machine tools according to claim 3, characterized in that: The meter fixing member comprises: A fixing plate is arranged on the outer circumferential surface of the gauge rod, wherein the fixing plate and the gauge setting groove form a gauge rod fixing groove adapted to the gauge rod; A connecting plate is extended along both sides of the fixed plate, and a first fastening bolt hole is provided on the connecting plate. Second fastening bolt holes are provided on both sides of the gauge setting groove, and the second fastening bolt holes are provided on the end face of the bracket; the fastening bolt passes through the first fastening bolt hole and is connected with the second fastening bolt hole.

5. The workpiece inner wall verticality measuring instrument for machine tools according to claim 4, characterized in that: The fixing plate is arc-shaped.

6. The workpiece inner wall verticality measuring instrument for machine tools according to claim 1, characterized in that: The gauge is an inside diameter dial gauge standard measuring tool.

7. The workpiece inner wall verticality measuring instrument for machine tools according to claim 1, characterized in that: The bracket includes a bracket transverse plate and a bracket vertical plate arranged at the end of the bracket transverse plate. The meter fixing groove is arranged on the end surface of the bracket vertical plate. The bracket transverse plate and the bracket vertical plate are perpendicular to each other.

8. The workpiece inner wall verticality measuring instrument for machine tools according to claim 7, characterized in that: Reinforcement ribs are provided on the top and bottom surfaces of the bracket transverse plate, and two ends of the reinforcement ribs are respectively provided on the bracket transverse plate and the bracket vertical plate.

9. The workpiece inner wall verticality measuring instrument for machine tools according to claim 2, characterized in that: A shaft sleeve is provided on the spindle tool holder or lathe tool holder of the machine tool, the inner wall of the shaft sleeve is adapted to the outer wall of the connecting shaft, and a connecting shaft fixing bolt is provided on the side of the shaft sleeve and passes through the inner wall of the shaft sleeve, and the connecting fixing bolt rests on the positioning plane.

10. The workpiece inner wall verticality measuring instrument for machine tools according to claim 1, characterized in that: The connecting shaft and the bracket are made of 40Cr material, and the meter fixing part is made of stainless steel material.

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