A measuring device for a machine tool spindle

Abstract

The application discloses a kind of measuring devices of machine tool spindle, belong to machine tool detection technical field, comprising: fixed seat;Support frame, slidably arranged on the upper end of fixed seat;Annular support, fixedly connected on the upper end of support frame;Oppositely arranged first slider and second slider, first slider and second slider are slidably arranged on annular support;Oppositely arranged first connecting rod and second connecting rod, first magnetic base and second magnetic base are fixedly connected at the second end of first connecting rod and the second end of second connecting rod respectively;Gauge main body is long strip, and upward detection protrusion is arranged in the middle of gauge main body;Gauge main body is magnetically attracted and matched with first magnetic base;Gauge accessory is columnar with arc cross section, and gauge accessory is magnetically attracted and matched with second magnetic base.The application makes operator in measurement process, without hand-held detection gauge to detect spindle, without rotating spindle or manually changing detection position in detection process, and operation error is small.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of machine tool detection, and particularly relates to a measuring device for a machine tool spindle. BACKGROUND

[0002] The machine tool spindle is a core functional component of a machine tool. In the machining process of the machine tool spindle part, many dimensions have high precision requirements and are difficult to measure, which causes unstable machining quality of the part and greatly affects the use performance of the spindle.

[0003] In the prior art, patent CN212747747U provides a measuring gauge for a machine tool spindle. The distance from the front end of the machine tool spindle to the step is a dimension to be detected. An operator needs to hold the detection gauge to detect the spindle during the measurement process using the measuring gauge. During multi-position detection, the spindle needs to be rotated or the detection position needs to be manually changed, and contact between the operator and the spindle cannot be avoided, the operation error is large, and the measurement precision is low. SUMMARY

[0004] To solve the above problems, the application adopts the following technical scheme:

[0005] A measuring device for a machine tool spindle comprises:

[0006] A fixed seat;

[0007] A support frame slidably arranged on the upper end of the fixed seat;

[0008] An annular support fixedly connected to the upper end of the support frame;

[0009] Oppositely arranged first and second sliding blocks, which are slidably arranged on the annular support;

[0010] A connecting frame located in the annular support for fixed connection between the first and second sliding blocks; wherein the first sliding block and the annular support have a sliding state and a braking state;

[0011] Oppositely arranged first and second connecting rods, the first ends of the first and second connecting rods being adjustably installed on the first and second sliding blocks, respectively;

[0012] First and second magnetic bases fixedly connected to the second ends of the first and second connecting rods, respectively;

[0013] The utility model discloses a detection tool main body, the detection tool main body is long strip, and is provided with the detection convex that has the inclined surface to the middle part of detection tool main body, and the detection tool main body is matched with the first magnetic force seat magnetic force adsorption,

[0014] The utility model discloses a detection tool accessory, and the detection tool accessory is columnar and is provided with the arc surface, and the detection tool accessory is matched with the second magnetic force seat magnetic force adsorption.

[0015] Further, the first sliding block and the second sliding block are provided with sliding grooves, the annular support is provided with an annular slide, and the sliding grooves are slidingly matched with the annular slide; the annular support is provided with an annular rack, the first sliding block is fixedly connected with a first driving device, the output end of the first driving device is provided with a gear, and the gear is matched with the annular rack to drive the first sliding block and the second sliding block to slide relative to the annular support.

[0016] Further, the first driving device is a stepping motor with electromagnetic braking.

[0017] Further, the distance from the upper surface of the detection tool accessory to the bottom end plus the thickness of the detection tool main body is equal to the diameter of the cylindrical through slot of the main shaft of the machine tool.

[0018] Further, the first end of the first connecting rod and the first end of the second connecting rod are provided with pressing locking seats.

[0019] The pressing locking seat comprises a housing, a T-shaped pin, a spring, a button and a limiting slider, the T-shaped pin is slidably arranged in the housing, the spring is sleeved on the lower end of the button to drive the T-shaped pin to reset;

[0020] The button is located at the upper end of the T-shaped pin and is slidably arranged on the housing, the limiting slider is arranged corresponding to the T-shaped pin and is fixedly installed on the housing, and the first connecting rod / second connecting rod passes through the housing and is located between the T-shaped pin and the limiting slider;

[0021] The T-shaped pin is provided with a waist-shaped sliding groove, the lower end of the button is provided with a locking block, and the sidewall of the housing is provided with a groove for accommodating the locking block.

[0022] When pressing and fixing, the button is abutted in the waist-shaped sliding groove, the locking block is slid into the groove, and the T-shaped pin and the limiting slider fixedly clamp the first connecting rod / second connecting rod and fix the position of the first connecting rod / second connecting rod.

[0023] When the length is adjusted, the button is pressed again, the locking block slides out of the groove, the T-shaped pin is reset by the reset force of the spring, the T-shaped pin loosens the first connecting rod / second connecting rod with the limiting sliding block, and the position of the first connecting rod / second connecting rod is changed.

[0024] Further, the fixed seat is provided with a second driving device, the second driving device drives the support frame to slide relative to the fixed seat through a screw pair; wherein the driving end of the second driving device is fixedly connected with the screw, and the screw nut is arranged on the support frame; the fixed seat is fixedly connected with a guide rod for guiding the sliding of the support frame.

[0025] Further, the bottom of the support frame is provided with a sliding protrusion, and the upper surface of the fixed seat is provided with a groove, and the sliding protrusion and the groove are in sliding fit.

[0026] The present application has the following advantages:

[0027] The measuring device of the machine tool spindle provided by the present application can directly avoid the contact between the operator and the spindle, has small operation error, and improves the measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front view of the overall structure of the present application;

[0029] Figure 2 It is Figure 1 It is a sectional view along A-A of the present application;

[0030] Figure 3 It is a structural schematic diagram of the present application when working;

[0031] 1, fixed seat; 2, support frame; 3, annular rack; 4, annular support; 5, first magnetic seat; 6, first connecting rod; 7, first pressing locking seat; 8, button; 9, gear; 10, first driving device; 11, connecting frame; 12, gauge body; 13, gauge accessory; 14, second magnetic seat; 15, second connecting rod; 16, second pressing locking seat; 17, sliding protrusion; 18, guide rod; 19, screw; 20, detection protrusion; 21, second support plate; 22, handle; 23, first support plate; 24, machine tool slide rail; 25, machine tool spindle. DETAILED DESCRIPTION

[0032] Example 1

[0033] Reference Figures 1-2 A measuring device of a machine tool spindle, comprising:

[0034] fixed seat 1;

[0035] support frame 2, the support frame 2 is slidably arranged on the upper end of the fixed seat 1;

[0036] annular support 4, the annular support 4 is fixedly connected to the upper end of the support frame 2;

[0037] The first slider and the second slider are oppositely arranged, and the first slider and the second slider are slidably arranged on the annular support 4;

[0038] The connecting frame 11 is located in the annular support 4, and is used for fixed connection between the first slider and the second slider; wherein, the first slider and the annular support 4 have sliding state and braking state;

[0039] The first connecting rod 6 and the second connecting rod 15 are oppositely arranged, and the first end of the first connecting rod 6 and the first end of the second connecting rod 15 are length-adjustably mounted on the first slider and the second slider respectively;

[0040] The first magnetic seat 5 and the second magnetic seat 14 are fixedly connected to the second end of the first connecting rod 6 and the second end of the second connecting rod 15 respectively; wherein, the second end of the first connecting rod 6 and the second end of the second connecting rod 15 point to the center of the annular support 4.

[0041] The gauge body 12 is long strip-shaped, and the detection protrusion 20 upwardly and with an inclined surface is arranged in the middle of the gauge body 12; the gauge body 12 is magnetically attracted and matched with the first magnetic seat 5;

[0042] The gauge accessory 13 is columnar with arc cross section, and the gauge accessory 13 is magnetically attracted and matched with the second magnetic seat 14.

[0043] In the embodiment, the first slider and the second slider are both provided with sliding grooves, the annular support 4 is provided with an annular slide, and the sliding grooves are slidably matched with the annular slide; the annular gear rack 3 is arranged on the annular support 4, the first driving device 10 is fixedly connected to the first slider, the output end of the first driving device 10 is provided with the gear 9, the gear 9 is matched with the annular gear rack 3, and the first slider and the second slider are driven to slide relative to the annular support 4.

[0044] In the embodiment, the first driving device 10 is a stepping motor with electromagnetic brake.

[0045] In the embodiment, the distance from the upper surface of the gauge accessory 13 to the bottom end plus the thickness of the gauge body 12 is equal to the diameter of the cylindrical through slot of the main shaft of the machine tool.

[0046] In the embodiment, the first end of the first connecting rod 6 and the first end of the second connecting rod 15 are both provided with pressing locking seats;

[0047] The pressing locking seat comprises a shell, a T-shaped pin, a spring, a button 8 and a limiting slider, the T-shaped pin is slidably arranged in the shell, the spring is sleeved on the lower end of the button 8 and used to drive the reset of the T-shaped pin;

[0048] The button 8 is located at the upper end of the T-shaped pin and is slidably arranged on the shell; the limiting slider is arranged correspondingly with the T-shaped pin and is fixedly installed on the shell; the first connecting rod 6 / second connecting rod 15 passes through the shell and is located between the T-shaped pin and the limiting slider;

[0049] The T-shaped pin is provided with a waist-shaped sliding groove; the lower end of the button 8 is provided with a locking block, and a groove is arranged on the side wall of the shell and used to accommodate the locking block;

[0050] When pressing and fixing, the button 8 abuts in the waist-shaped sliding groove, the locking block slides into the groove, the T-shaped pin and the limiting slider fixedly clamp the first connecting rod 6 / second connecting rod 15 and fix the position of the first connecting rod 6 / second connecting rod 15;

[0051] When pressing to adjust the length, the button 8 is pressed again, the locking block slides out of the groove, the T-shaped pin is reset by the reset force of the spring, the T-shaped pin and the limiting slider loosen the first connecting rod 6 / second connecting rod 15, and the position of the first connecting rod 6 / second connecting rod 15 is changed.

[0052] The two pressing locking seats are respectively set as a first pressing locking seat 7 and a second pressing locking seat 16, and the first pressing locking seat 7 and the second pressing locking seat 16 are arranged correspondingly with the first connecting rod 6 and the second connecting rod 15.

[0053] In other embodiments, the first pressing locking seat 7 and the second pressing locking seat 16 can also adopt the principle form of a wallpaper cutter and cooperate with the first connecting rod 6 and the second connecting rod 15.

[0054] In the embodiment, the fixed seat 1 is provided with a second driving device, the second driving device drives the support frame 2 to slide relative to the fixed seat 1 through a screw rod 19 kinematic pair, the driving end of the second driving device is fixedly connected with the screw rod 19, and a screw nut is arranged on the support frame 2; the fixed seat 1 is fixedly connected with a guide rod 18 for guiding the sliding of the support frame 2.

[0055] The second driving device is preferably a handle 22.

[0056] In the embodiment, the support frame 2 is provided with a sliding protrusion 17 at the bottom, and the upper surface of the fixed seat 1 is provided with a groove, the sliding protrusion 17 and the groove are in sliding cooperation.

[0057] The upper surface of the fixing seat 1 is provided with a second support plate 21 and a first support plate 23 at two ends respectively, and the two ends of the guide rod 18 are fixed on the second support plate 21 and the first support plate 23 respectively, and the lead screw 19 is rotatably connected with the second support plate 21 and the first support plate 23.

[0058] The use steps of the measuring device of the machine tool spindle provided by the embodiment are as follows:

[0059] 1) The measuring device of the machine tool spindle is placed on the machine tool slide rail 24 at a proper position;

[0060] 2) The first slider and the second slider are driven to rotate to a first position by the controller controlling the stepping motor;

[0061] 3) The relative positions of the first magnetic base 5 and the second magnetic base 14 to the machine tool spindle 25 are adjusted by the handle 22 driving the lead screw pair;

[0062] 4) The relative positions of the first magnetic base 5 and the second magnetic base 14 in the radial direction of the annular support 4 are adjusted by the first pressing locking seat 7 and the second pressing locking seat 16;

[0063] 5) The gauge body 12 is first adsorbed on the first magnetic base 5, and the gauge body 12 is first inserted into the machine tool spindle 25 by the handle 22 driving the lead screw pair, so that the inclined surface of the detection protrusion 20 of the gauge body 12 is tightly attached to the step of the machine tool spindle 25; at this time, the smooth arc surface on the tail end upper surface of the gauge body 12 should be attached to the groove wall of the cylindrical through groove of the machine tool spindle 25, and the front end of the gauge body 12 should be exposed from the front end of the machine tool spindle 25.

[0064] 6) The position of the second magnetic base 14 is adjusted by the second pressing locking seat 16, the gauge accessory 13 is inserted into the machine tool spindle 25, the upper surface of the gauge accessory 13 is attached to the lower surface of the gauge body 12, and the lower surface arc of the gauge accessory 13 is tightly attached to the groove wall of the cylindrical through groove of the machine tool spindle 25; the gauge accessory 13 is adsorbed on the second magnetic base 14;

[0065] 7) The distance L1 from the front end of the gauge body 12 to the front end of the machine tool spindle 25 is measured by a measuring tool, the distance L2 from the front end of the machine tool spindle 25 to the step is obtained by calculation, i.e. L2=L-L1, and the distance L2 of the first position is obtained;

[0066] 8) The gauge accessory 13 and the gauge body 12 are moved out of the machine tool spindle 25 by the handle 22 driving the lead screw pair;

[0067] 9) Through the controller control stepper motor drive the first slider and the second slider to rotate to the second position; through the handle 22 drive the screw pair to make the gauge accessory 13 and the gauge main body 12 enter the machine tool spindle 25, so that the detection convex 20 of the gauge main body 12 is close to the ladder of the machine tool spindle 25, repeat step 7), get the distance L2 of the second position, and so on to get the distance L2 of multiple positions.

[0068] The above is only the preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Any minor modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A measuring device for a machine tool spindle, characterized in that, include: Fixed base; A support frame, which is slidably disposed on the upper end of the fixed base; An annular bracket, which is fixedly connected to the upper end of the support frame; The first slider and the second slider are arranged opposite to each other, and both the first slider and the second slider are slidably mounted on the annular bracket; A connecting frame is located inside the annular bracket and is used for a fixed connection between the first slider and the second slider; wherein the first slider and the annular bracket have a sliding state and a braking state; The first connecting rod and the second connecting rod are arranged opposite to each other, and the first end of the first connecting rod and the first end of the second connecting rod are respectively mounted on the first slider and the second slider with adjustable lengths; The first magnetic base and the second magnetic base are respectively fixedly connected to the second end of the first connecting rod and the second end of the second connecting rod; The inspection fixture body is elongated and has an upward-facing, sloping detection protrusion in the middle. The inspection fixture body is magnetically attracted to the first magnetic base. The inspection fixture accessory is a cylindrical shape with an arc-shaped cross-section, and the inspection fixture accessory is magnetically attracted to the second magnetic base; Both the first end of the first connecting rod and the first end of the second connecting rod are provided with a pressing locking seat; The press-lock seat includes a housing, a T-pin, a spring, a button, and a limiting slider. The T-pin is slidably disposed inside the housing, and the spring is sleeved on the lower end of the button to drive the T-pin to reset. The button is located at the upper end of the T-pin and can be slidably mounted on the housing; the limiting slider is correspondingly mounted to the T-pin and is fixedly installed on the housing; the first connecting rod / second connecting rod passes through the housing and is located between the T-pin and the limiting slider; The T-pin is provided with a waist-shaped sliding groove; the lower end of the button is provided with a locking block, and the side wall of the housing is provided with a groove for accommodating the locking block; When pressed and fixed, the button abuts against the waist-shaped groove, the locking block slides into the groove, and the T-pin and the limiting slider clamp the first connecting rod / second connecting rod and fix the position of the first connecting rod / second connecting rod. When the length is adjusted by pressing down, the button is pressed again, the locking block slides out of the groove, the T-pin is reset by the restoring force of the spring, the T-pin and the limiting slider are released from the first connecting rod / second connecting rod, and the position of the first connecting rod / second connecting rod is changed.

2. The measuring device for machine tool spindles according to claim 1, characterized in that, Both the first slider and the second slider are provided with a sliding groove, and the annular bracket is provided with an annular slide rail. The sliding groove and the annular slide rail are slidably engaged. An annular rack is provided on the annular bracket, and a first driving device is fixedly connected to the first slider. A gear is provided at the output end of the first driving device. The gear engages with the annular rack to drive the first slider and the second slider to slide relative to the annular bracket.

3. The measuring device for machine tool spindles according to claim 2, characterized in that, The first driving device is a stepper motor with electromagnetic braking.

4. The measuring device for machine tool spindles according to claim 1, characterized in that, The distance from the upper surface of the fixture accessory to its bottom end, plus the thickness of the fixture body, is equal to the diameter of the cylindrical through groove of the machine tool spindle.

5. The measuring device for a machine tool spindle according to claim 1, characterized in that, A second driving device is provided on the fixed base. The second driving device drives the support frame to slide relative to the fixed base through a lead screw kinematic pair. The driving end of the second driving device is fixedly connected to the lead screw, and the lead screw nut is provided on the support frame. A guide rod is fixedly connected to the fixed base to guide the sliding of the support frame.

6. The measuring device for a machine tool spindle according to claim 5, characterized in that, The bottom of the support frame is provided with a sliding protrusion, and the upper surface of the fixed seat is provided with a groove, and the sliding protrusion slides in conjunction with the groove.

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